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SUSE:SLE-12-SP4:GA
apache2.19978
apache2-mod_http2-1.10.12.patch
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File apache2-mod_http2-1.10.12.patch of Package apache2.19978
diff -up --new-file httpd-2.4.23/modules/http2/config2.m4 /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/config2.m4 --- httpd-2.4.23/modules/http2/config2.m4 2016-06-28 21:57:30.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/config2.m4 2017-10-17 13:47:14.000000000 +0200 @@ -21,7 +21,6 @@ http2_objs="dnl mod_http2.lo dnl h2_alt_svc.lo dnl h2_bucket_beam.lo dnl -h2_bucket_eoc.lo dnl h2_bucket_eos.lo dnl h2_config.lo dnl h2_conn.lo dnl @@ -30,17 +29,16 @@ h2_ctx.lo dnl h2_filter.lo dnl h2_from_h1.lo dnl h2_h2.lo dnl +h2_headers.lo dnl h2_mplx.lo dnl h2_ngn_shed.lo dnl h2_push.lo dnl h2_request.lo dnl -h2_response.lo dnl h2_session.lo dnl h2_stream.lo dnl h2_switch.lo dnl h2_task.lo dnl h2_util.lo dnl -h2_worker.lo dnl h2_workers.lo dnl " @@ -82,12 +80,18 @@ AC_DEFUN([APACHE_CHECK_NGHTTP2],[ if test -n "$PKGCONFIG"; then saved_PKG_CONFIG_PATH="$PKG_CONFIG_PATH" AC_MSG_CHECKING([for pkg-config along $PKG_CONFIG_PATH]) - if test "x$ap_nghttp2_base" != "x" -a \ - -f "${ap_nghttp2_base}/lib/pkgconfig/libnghttp2.pc"; then - dnl Ensure that the given path is used by pkg-config too, otherwise - dnl the system libnghttp2.pc might be picked up instead. - PKG_CONFIG_PATH="${ap_nghttp2_base}/lib/pkgconfig${PKG_CONFIG_PATH+:}${PKG_CONFIG_PATH}" - export PKG_CONFIG_PATH + if test "x$ap_nghttp2_base" != "x" ; then + if test -f "${ap_nghttp2_base}/lib/pkgconfig/libnghttp2.pc"; then + dnl Ensure that the given path is used by pkg-config too, otherwise + dnl the system libnghttp2.pc might be picked up instead. + PKG_CONFIG_PATH="${ap_nghttp2_base}/lib/pkgconfig${PKG_CONFIG_PATH+:}${PKG_CONFIG_PATH}" + export PKG_CONFIG_PATH + elif test -f "${ap_nghttp2_base}/lib64/pkgconfig/libnghttp2.pc"; then + dnl Ensure that the given path is used by pkg-config too, otherwise + dnl the system libnghttp2.pc might be picked up instead. + PKG_CONFIG_PATH="${ap_nghttp2_base}/lib64/pkgconfig${PKG_CONFIG_PATH+:}${PKG_CONFIG_PATH}" + export PKG_CONFIG_PATH + fi fi AC_ARG_ENABLE(nghttp2-staticlib-deps,APACHE_HELP_STRING(--enable-nghttp2-staticlib-deps,[link mod_http2 with dependencies of libnghttp2's static libraries (as indicated by "pkg-config --static"). Must be specified in addition to --enable-http2.]), [ if test "$enableval" = "yes"; then @@ -154,6 +158,12 @@ dnl # nghttp2 >= 1.3.0: access to stream dnl # nghttp2 >= 1.5.0: changing stream priorities AC_CHECK_FUNCS([nghttp2_session_change_stream_priority], [APR_ADDTO(MOD_CPPFLAGS, ["-DH2_NG2_CHANGE_PRIO"])], []) +dnl # nghttp2 >= 1.14.0: invalid header callback + AC_CHECK_FUNCS([nghttp2_session_callbacks_set_on_invalid_header_callback], + [APR_ADDTO(MOD_CPPFLAGS, ["-DH2_NG2_INVALID_HEADER_CB"])], []) +dnl # nghttp2 >= 1.15.0: get/set stream window sizes + AC_CHECK_FUNCS([nghttp2_session_get_stream_local_window_size], + [APR_ADDTO(MOD_CPPFLAGS, ["-DH2_NG2_LOCAL_WIN_SIZE"])], []) else AC_MSG_WARN([nghttp2 version is too old]) fi diff -up --new-file httpd-2.4.23/modules/http2/h2_alt_svc.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_alt_svc.c --- httpd-2.4.23/modules/http2/h2_alt_svc.c 2016-02-10 00:09:24.000000000 +0100 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_alt_svc.c 2016-07-20 18:09:06.000000000 +0200 @@ -86,7 +86,7 @@ static int h2_alt_svc_handler(request_re return DECLINED; } - cfg = h2_config_rget(r); + cfg = h2_config_sget(r->server); if (r->hostname && cfg && cfg->alt_svcs && cfg->alt_svcs->nelts > 0) { const char *alt_svc_used = apr_table_get(r->headers_in, "Alt-Svc-Used"); if (!alt_svc_used) { diff -up --new-file httpd-2.4.23/modules/http2/h2_bucket_beam.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_bucket_beam.c --- httpd-2.4.23/modules/http2/h2_bucket_beam.c 2016-06-09 12:38:10.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_bucket_beam.c 2017-10-13 10:37:45.000000000 +0200 @@ -14,6 +14,7 @@ */ #include <apr_lib.h> +#include <apr_atomic.h> #include <apr_strings.h> #include <apr_time.h> #include <apr_buckets.h> @@ -21,6 +22,7 @@ #include <apr_thread_cond.h> #include <httpd.h> +#include <http_protocol.h> #include <http_log.h> #include "h2_private.h" @@ -66,7 +68,7 @@ struct h2_beam_proxy { apr_bucket_refcount refcount; APR_RING_ENTRY(h2_beam_proxy) link; h2_bucket_beam *beam; - apr_bucket *bred; + apr_bucket *bsender; apr_size_t n; }; @@ -76,9 +78,9 @@ static apr_status_t beam_bucket_read(apr apr_size_t *len, apr_read_type_e block) { h2_beam_proxy *d = b->data; - if (d->bred) { + if (d->bsender) { const char *data; - apr_status_t status = apr_bucket_read(d->bred, &data, len, block); + apr_status_t status = apr_bucket_read(d->bsender, &data, len, block); if (status == APR_SUCCESS) { *str = data + b->start; *len = b->length; @@ -109,24 +111,24 @@ static void beam_bucket_destroy(void *da static apr_bucket * h2_beam_bucket_make(apr_bucket *b, h2_bucket_beam *beam, - apr_bucket *bred, apr_size_t n) + apr_bucket *bsender, apr_size_t n) { h2_beam_proxy *d; d = apr_bucket_alloc(sizeof(*d), b->list); H2_BPROXY_LIST_INSERT_TAIL(&beam->proxies, d); d->beam = beam; - d->bred = bred; + d->bsender = bsender; d->n = n; - b = apr_bucket_shared_make(b, d, 0, bred? bred->length : 0); + b = apr_bucket_shared_make(b, d, 0, bsender? bsender->length : 0); b->type = &h2_bucket_type_beam; return b; } static apr_bucket *h2_beam_bucket_create(h2_bucket_beam *beam, - apr_bucket *bred, + apr_bucket *bsender, apr_bucket_alloc_t *list, apr_size_t n) { @@ -135,28 +137,9 @@ static apr_bucket *h2_beam_bucket_create APR_BUCKET_INIT(b); b->free = apr_bucket_free; b->list = list; - return h2_beam_bucket_make(b, beam, bred, n); + return h2_beam_bucket_make(b, beam, bsender, n); } -/*static apr_status_t beam_bucket_setaside(apr_bucket *b, apr_pool_t *pool) -{ - apr_status_t status = APR_SUCCESS; - h2_beam_proxy *d = b->data; - if (d->bred) { - const char *data; - apr_size_t len; - - status = apr_bucket_read(d->bred, &data, &len, APR_BLOCK_READ); - if (status == APR_SUCCESS) { - b = apr_bucket_heap_make(b, (char *)data + b->start, b->length, NULL); - if (b == NULL) { - return APR_ENOMEM; - } - } - } - return status; -}*/ - const apr_bucket_type_t h2_bucket_type_beam = { "BEAM", 5, APR_BUCKET_DATA, beam_bucket_destroy, @@ -169,51 +152,65 @@ const apr_bucket_type_t h2_bucket_type_b /******************************************************************************* * h2_blist, a brigade without allocations ******************************************************************************/ - -apr_size_t h2_util_bl_print(char *buffer, apr_size_t bmax, - const char *tag, const char *sep, - h2_blist *bl) + +static apr_array_header_t *beamers; + +static apr_status_t cleanup_beamers(void *dummy) { - apr_size_t off = 0; - const char *sp = ""; - apr_bucket *b; - - if (bl) { - memset(buffer, 0, bmax--); - off += apr_snprintf(buffer+off, bmax-off, "%s(", tag); - for (b = H2_BLIST_FIRST(bl); - bmax && (b != H2_BLIST_SENTINEL(bl)); - b = APR_BUCKET_NEXT(b)) { + (void)dummy; + beamers = NULL; + return APR_SUCCESS; +} + +void h2_register_bucket_beamer(h2_bucket_beamer *beamer) +{ + if (!beamers) { + apr_pool_cleanup_register(apr_hook_global_pool, NULL, + cleanup_beamers, apr_pool_cleanup_null); + beamers = apr_array_make(apr_hook_global_pool, 10, + sizeof(h2_bucket_beamer*)); + } + APR_ARRAY_PUSH(beamers, h2_bucket_beamer*) = beamer; +} + +static apr_bucket *h2_beam_bucket(h2_bucket_beam *beam, + apr_bucket_brigade *dest, + const apr_bucket *src) +{ + apr_bucket *b = NULL; + int i; + if (beamers) { + for (i = 0; i < beamers->nelts && b == NULL; ++i) { + h2_bucket_beamer *beamer; - off += h2_util_bucket_print(buffer+off, bmax-off, b, sp); - sp = " "; + beamer = APR_ARRAY_IDX(beamers, i, h2_bucket_beamer*); + b = beamer(beam, dest, src); } - off += apr_snprintf(buffer+off, bmax-off, ")%s", sep); - } - else { - off += apr_snprintf(buffer+off, bmax-off, "%s(null)%s", tag, sep); } - return off; + return b; } - /******************************************************************************* * bucket beam that can transport buckets across threads ******************************************************************************/ +static void mutex_leave(void *ctx, apr_thread_mutex_t *lock) +{ + apr_thread_mutex_unlock(lock); +} + +static apr_status_t mutex_enter(void *ctx, h2_beam_lock *pbl) +{ + h2_bucket_beam *beam = ctx; + pbl->mutex = beam->lock; + pbl->leave = mutex_leave; + return apr_thread_mutex_lock(pbl->mutex); +} + static apr_status_t enter_yellow(h2_bucket_beam *beam, h2_beam_lock *pbl) { - h2_beam_mutex_enter *enter = beam->m_enter; - if (enter) { - void *ctx = beam->m_ctx; - if (ctx) { - return enter(ctx, pbl); - } - } - pbl->mutex = NULL; - pbl->leave = NULL; - return APR_SUCCESS; + return mutex_enter(beam, pbl); } static void leave_yellow(h2_bucket_beam *beam, h2_beam_lock *pbl) @@ -223,18 +220,65 @@ static void leave_yellow(h2_bucket_beam } } -static apr_off_t calc_buffered(h2_bucket_beam *beam) +static apr_off_t bucket_mem_used(apr_bucket *b) { - apr_off_t len = 0; + if (APR_BUCKET_IS_FILE(b)) { + return 0; + } + else { + /* should all have determinate length */ + return b->length; + } +} + +static int report_consumption(h2_bucket_beam *beam, h2_beam_lock *pbl) +{ + int rv = 0; + apr_off_t len = beam->received_bytes - beam->cons_bytes_reported; + h2_beam_io_callback *cb = beam->cons_io_cb; + + if (len > 0) { + if (cb) { + void *ctx = beam->cons_ctx; + + if (pbl) leave_yellow(beam, pbl); + cb(ctx, beam, len); + if (pbl) enter_yellow(beam, pbl); + rv = 1; + } + beam->cons_bytes_reported += len; + } + return rv; +} + +static void report_prod_io(h2_bucket_beam *beam, int force, h2_beam_lock *pbl) +{ + apr_off_t len = beam->sent_bytes - beam->prod_bytes_reported; + if (force || len > 0) { + h2_beam_io_callback *cb = beam->prod_io_cb; + if (cb) { + void *ctx = beam->prod_ctx; + + leave_yellow(beam, pbl); + cb(ctx, beam, len); + enter_yellow(beam, pbl); + } + beam->prod_bytes_reported += len; + } +} + +static apr_size_t calc_buffered(h2_bucket_beam *beam) +{ + apr_size_t len = 0; apr_bucket *b; - for (b = H2_BLIST_FIRST(&beam->red); - b != H2_BLIST_SENTINEL(&beam->red); + for (b = H2_BLIST_FIRST(&beam->send_list); + b != H2_BLIST_SENTINEL(&beam->send_list); b = APR_BUCKET_NEXT(b)) { if (b->length == ((apr_size_t)-1)) { /* do not count */ } else if (APR_BUCKET_IS_FILE(b)) { - /* if unread, has no real mem footprint. how to test? */ + /* if unread, has no real mem footprint. */ } else { len += b->length; @@ -243,14 +287,14 @@ static apr_off_t calc_buffered(h2_bucket return len; } -static void r_purge_reds(h2_bucket_beam *beam) +static void r_purge_sent(h2_bucket_beam *beam) { - apr_bucket *bred; - /* delete all red buckets in purge brigade, needs to be called - * from red thread only */ - while (!H2_BLIST_EMPTY(&beam->purge)) { - bred = H2_BLIST_FIRST(&beam->purge); - apr_bucket_delete(bred); + apr_bucket *b; + /* delete all sender buckets in purge brigade, needs to be called + * from sender thread only */ + while (!H2_BLIST_EMPTY(&beam->purge_list)) { + b = H2_BLIST_FIRST(&beam->purge_list); + apr_bucket_delete(b); } } @@ -263,30 +307,80 @@ static apr_size_t calc_space_left(h2_buc return APR_SIZE_MAX; } -static apr_status_t wait_cond(h2_bucket_beam *beam, apr_thread_mutex_t *lock) +static int buffer_is_empty(h2_bucket_beam *beam) +{ + return ((!beam->recv_buffer || APR_BRIGADE_EMPTY(beam->recv_buffer)) + && H2_BLIST_EMPTY(&beam->send_list)); +} + +static apr_status_t wait_empty(h2_bucket_beam *beam, apr_read_type_e block, + apr_thread_mutex_t *lock) { - if (beam->timeout > 0) { - return apr_thread_cond_timedwait(beam->m_cond, lock, beam->timeout); + apr_status_t rv = APR_SUCCESS; + + while (!buffer_is_empty(beam) && APR_SUCCESS == rv) { + if (APR_BLOCK_READ != block || !lock) { + rv = APR_EAGAIN; + } + else if (beam->timeout > 0) { + rv = apr_thread_cond_timedwait(beam->change, lock, beam->timeout); + } + else { + rv = apr_thread_cond_wait(beam->change, lock); + } } - else { - return apr_thread_cond_wait(beam->m_cond, lock); + return rv; +} + +static apr_status_t wait_not_empty(h2_bucket_beam *beam, apr_read_type_e block, + apr_thread_mutex_t *lock) +{ + apr_status_t rv = APR_SUCCESS; + + while (buffer_is_empty(beam) && APR_SUCCESS == rv) { + if (beam->aborted) { + rv = APR_ECONNABORTED; + } + else if (beam->closed) { + rv = APR_EOF; + } + else if (APR_BLOCK_READ != block || !lock) { + rv = APR_EAGAIN; + } + else if (beam->timeout > 0) { + rv = apr_thread_cond_timedwait(beam->change, lock, beam->timeout); + } + else { + rv = apr_thread_cond_wait(beam->change, lock); + } } + return rv; } -static apr_status_t r_wait_space(h2_bucket_beam *beam, apr_read_type_e block, - h2_beam_lock *pbl, apr_off_t *premain) +static apr_status_t wait_not_full(h2_bucket_beam *beam, apr_read_type_e block, + apr_size_t *pspace_left, h2_beam_lock *bl) { - *premain = calc_space_left(beam); - while (!beam->aborted && *premain <= 0 - && (block == APR_BLOCK_READ) && pbl->mutex) { - apr_status_t status = wait_cond(beam, pbl->mutex); - if (APR_STATUS_IS_TIMEUP(status)) { - return status; + apr_status_t rv = APR_SUCCESS; + apr_size_t left; + + while (0 == (left = calc_space_left(beam)) && APR_SUCCESS == rv) { + if (beam->aborted) { + rv = APR_ECONNABORTED; + } + else if (block != APR_BLOCK_READ || !bl->mutex) { + rv = APR_EAGAIN; + } + else { + if (beam->timeout > 0) { + rv = apr_thread_cond_timedwait(beam->change, bl->mutex, beam->timeout); + } + else { + rv = apr_thread_cond_wait(beam->change, bl->mutex); + } } - r_purge_reds(beam); - *premain = calc_space_left(beam); } - return beam->aborted? APR_ECONNABORTED : APR_SUCCESS; + *pspace_left = left; + return rv; } static void h2_beam_emitted(h2_bucket_beam *beam, h2_beam_proxy *proxy) @@ -298,34 +392,34 @@ static void h2_beam_emitted(h2_bucket_be /* even when beam buckets are split, only the one where * refcount drops to 0 will call us */ H2_BPROXY_REMOVE(proxy); - /* invoked from green thread, the last beam bucket for the red - * bucket bred is about to be destroyed. + /* invoked from receiver thread, the last beam bucket for the send + * bucket is about to be destroyed. * remove it from the hold, where it should be now */ - if (proxy->bred) { - for (b = H2_BLIST_FIRST(&beam->hold); - b != H2_BLIST_SENTINEL(&beam->hold); + if (proxy->bsender) { + for (b = H2_BLIST_FIRST(&beam->hold_list); + b != H2_BLIST_SENTINEL(&beam->hold_list); b = APR_BUCKET_NEXT(b)) { - if (b == proxy->bred) { + if (b == proxy->bsender) { break; } } - if (b != H2_BLIST_SENTINEL(&beam->hold)) { + if (b != H2_BLIST_SENTINEL(&beam->hold_list)) { /* bucket is in hold as it should be, mark this one * and all before it for purging. We might have placed meta - * buckets without a green proxy into the hold before it + * buckets without a receiver proxy into the hold before it * and schedule them for purging now */ - for (b = H2_BLIST_FIRST(&beam->hold); - b != H2_BLIST_SENTINEL(&beam->hold); + for (b = H2_BLIST_FIRST(&beam->hold_list); + b != H2_BLIST_SENTINEL(&beam->hold_list); b = next) { next = APR_BUCKET_NEXT(b); - if (b == proxy->bred) { + if (b == proxy->bsender) { APR_BUCKET_REMOVE(b); - H2_BLIST_INSERT_TAIL(&beam->purge, b); + H2_BLIST_INSERT_TAIL(&beam->purge_list, b); break; } else if (APR_BUCKET_IS_METADATA(b)) { APR_BUCKET_REMOVE(b); - H2_BLIST_INSERT_TAIL(&beam->purge, b); + H2_BLIST_INSERT_TAIL(&beam->purge_list, b); } else { /* another data bucket before this one in hold. this @@ -334,50 +428,28 @@ static void h2_beam_emitted(h2_bucket_be } } - proxy->bred = NULL; + proxy->bsender = NULL; } else { /* it should be there unless we screwed up */ - ap_log_perror(APLOG_MARK, APLOG_WARNING, 0, beam->red_pool, + ap_log_perror(APLOG_MARK, APLOG_WARNING, 0, beam->send_pool, APLOGNO(03384) "h2_beam(%d-%s): emitted bucket not " "in hold, n=%d", beam->id, beam->tag, (int)proxy->n); - AP_DEBUG_ASSERT(!proxy->bred); + ap_assert(!proxy->bsender); } } /* notify anyone waiting on space to become available */ if (!bl.mutex) { - r_purge_reds(beam); + r_purge_sent(beam); } - else if (beam->m_cond) { - apr_thread_cond_broadcast(beam->m_cond); + else { + apr_thread_cond_broadcast(beam->change); } leave_yellow(beam, &bl); } } -static void report_consumption(h2_bucket_beam *beam, int force) -{ - if (force || beam->received_bytes != beam->reported_consumed_bytes) { - if (beam->consumed_fn) { - beam->consumed_fn(beam->consumed_ctx, beam, beam->received_bytes - - beam->reported_consumed_bytes); - } - beam->reported_consumed_bytes = beam->received_bytes; - } -} - -static void report_production(h2_bucket_beam *beam, int force) -{ - if (force || beam->sent_bytes != beam->reported_produced_bytes) { - if (beam->produced_fn) { - beam->produced_fn(beam->produced_ctx, beam, beam->sent_bytes - - beam->reported_produced_bytes); - } - beam->reported_produced_bytes = beam->sent_bytes; - } -} - static void h2_blist_cleanup(h2_blist *bl) { apr_bucket *e; @@ -392,64 +464,188 @@ static apr_status_t beam_close(h2_bucket { if (!beam->closed) { beam->closed = 1; - if (beam->m_cond) { - apr_thread_cond_broadcast(beam->m_cond); - } + apr_thread_cond_broadcast(beam->change); } return APR_SUCCESS; } -static apr_status_t beam_cleanup(void *data) +int h2_beam_is_closed(h2_bucket_beam *beam) +{ + return beam->closed; +} + +static int pool_register(h2_bucket_beam *beam, apr_pool_t *pool, + apr_status_t (*cleanup)(void *)) +{ + if (pool && pool != beam->pool) { + apr_pool_pre_cleanup_register(pool, beam, cleanup); + return 1; + } + return 0; +} + +static int pool_kill(h2_bucket_beam *beam, apr_pool_t *pool, + apr_status_t (*cleanup)(void *)) { + if (pool && pool != beam->pool) { + apr_pool_cleanup_kill(pool, beam, cleanup); + return 1; + } + return 0; +} + +static apr_status_t beam_recv_cleanup(void *data) { h2_bucket_beam *beam = data; - - beam_close(beam); - r_purge_reds(beam); - h2_blist_cleanup(&beam->red); - report_consumption(beam, 0); + /* receiver pool has gone away, clear references */ + beam->recv_buffer = NULL; + beam->recv_pool = NULL; + return APR_SUCCESS; +} + +static apr_status_t beam_send_cleanup(void *data) +{ + h2_bucket_beam *beam = data; + /* sender is going away, clear up all references to its memory */ + r_purge_sent(beam); + h2_blist_cleanup(&beam->send_list); + report_consumption(beam, NULL); while (!H2_BPROXY_LIST_EMPTY(&beam->proxies)) { h2_beam_proxy *proxy = H2_BPROXY_LIST_FIRST(&beam->proxies); H2_BPROXY_REMOVE(proxy); proxy->beam = NULL; - proxy->bred = NULL; + proxy->bsender = NULL; } - h2_blist_cleanup(&beam->purge); - h2_blist_cleanup(&beam->hold); - + h2_blist_cleanup(&beam->purge_list); + h2_blist_cleanup(&beam->hold_list); + beam->send_pool = NULL; return APR_SUCCESS; } +static void beam_set_send_pool(h2_bucket_beam *beam, apr_pool_t *pool) +{ + if (beam->send_pool != pool) { + if (beam->send_pool && beam->send_pool != beam->pool) { + pool_kill(beam, beam->send_pool, beam_send_cleanup); + beam_send_cleanup(beam); + } + beam->send_pool = pool; + pool_register(beam, beam->send_pool, beam_send_cleanup); + } +} + +static void recv_buffer_cleanup(h2_bucket_beam *beam, h2_beam_lock *bl) +{ + if (beam->recv_buffer && !APR_BRIGADE_EMPTY(beam->recv_buffer)) { + apr_bucket_brigade *bb = beam->recv_buffer; + apr_off_t bblen = 0; + + beam->recv_buffer = NULL; + apr_brigade_length(bb, 0, &bblen); + beam->received_bytes += bblen; + + /* need to do this unlocked since bucket destroy might + * call this beam again. */ + if (bl) leave_yellow(beam, bl); + apr_brigade_destroy(bb); + if (bl) enter_yellow(beam, bl); + + if (beam->cons_ev_cb) { + beam->cons_ev_cb(beam->cons_ctx, beam); + } + } +} + +static apr_status_t beam_cleanup(void *data) +{ + h2_bucket_beam *beam = data; + apr_status_t status = APR_SUCCESS; + int safe_send = (beam->owner == H2_BEAM_OWNER_SEND); + int safe_recv = (beam->owner == H2_BEAM_OWNER_RECV); + + /* + * Owner of the beam is going away, depending on which side it owns, + * cleanup strategies will differ. + * + * In general, receiver holds references to memory from sender. + * Clean up receiver first, if safe, then cleanup sender, if safe. + */ + + /* When modify send is not safe, this means we still have multi-thread + * protection and the owner is receiving the buckets. If the sending + * side has not gone away, this means we could have dangling buckets + * in our lists that never get destroyed. This should not happen. */ + ap_assert(safe_send || !beam->send_pool); + if (!H2_BLIST_EMPTY(&beam->send_list)) { + ap_assert(beam->send_pool); + } + + if (safe_recv) { + if (beam->recv_pool) { + pool_kill(beam, beam->recv_pool, beam_recv_cleanup); + beam->recv_pool = NULL; + } + recv_buffer_cleanup(beam, NULL); + } + else { + beam->recv_buffer = NULL; + beam->recv_pool = NULL; + } + + if (safe_send && beam->send_pool) { + pool_kill(beam, beam->send_pool, beam_send_cleanup); + status = beam_send_cleanup(beam); + } + + if (safe_recv) { + ap_assert(H2_BPROXY_LIST_EMPTY(&beam->proxies)); + ap_assert(H2_BLIST_EMPTY(&beam->send_list)); + ap_assert(H2_BLIST_EMPTY(&beam->hold_list)); + ap_assert(H2_BLIST_EMPTY(&beam->purge_list)); + } + return status; +} + apr_status_t h2_beam_destroy(h2_bucket_beam *beam) { - apr_pool_cleanup_kill(beam->red_pool, beam, beam_cleanup); + apr_pool_cleanup_kill(beam->pool, beam, beam_cleanup); return beam_cleanup(beam); } -apr_status_t h2_beam_create(h2_bucket_beam **pbeam, apr_pool_t *red_pool, +apr_status_t h2_beam_create(h2_bucket_beam **pbeam, apr_pool_t *pool, int id, const char *tag, - apr_size_t max_buf_size) + h2_beam_owner_t owner, + apr_size_t max_buf_size, + apr_interval_time_t timeout) { h2_bucket_beam *beam; - apr_status_t status = APR_SUCCESS; + apr_status_t rv = APR_SUCCESS; - beam = apr_pcalloc(red_pool, sizeof(*beam)); + beam = apr_pcalloc(pool, sizeof(*beam)); if (!beam) { return APR_ENOMEM; } beam->id = id; beam->tag = tag; - H2_BLIST_INIT(&beam->red); - H2_BLIST_INIT(&beam->hold); - H2_BLIST_INIT(&beam->purge); + beam->pool = pool; + beam->owner = owner; + H2_BLIST_INIT(&beam->send_list); + H2_BLIST_INIT(&beam->hold_list); + H2_BLIST_INIT(&beam->purge_list); H2_BPROXY_LIST_INIT(&beam->proxies); - beam->red_pool = red_pool; + beam->tx_mem_limits = 1; beam->max_buf_size = max_buf_size; + beam->timeout = timeout; - apr_pool_pre_cleanup_register(red_pool, beam, beam_cleanup); - *pbeam = beam; - - return status; + rv = apr_thread_mutex_create(&beam->lock, APR_THREAD_MUTEX_DEFAULT, pool); + if (APR_SUCCESS == rv) { + rv = apr_thread_cond_create(&beam->change, pool); + if (APR_SUCCESS == rv) { + apr_pool_pre_cleanup_register(pool, beam, beam_cleanup); + *pbeam = beam; + } + } + return rv; } void h2_beam_buffer_size_set(h2_bucket_beam *beam, apr_size_t buffer_size) @@ -474,21 +670,6 @@ apr_size_t h2_beam_buffer_size_get(h2_bu return buffer_size; } -void h2_beam_mutex_set(h2_bucket_beam *beam, - h2_beam_mutex_enter m_enter, - apr_thread_cond_t *cond, - void *m_ctx) -{ - h2_beam_lock bl; - - if (enter_yellow(beam, &bl) == APR_SUCCESS) { - beam->m_enter = m_enter; - beam->m_ctx = m_ctx; - beam->m_cond = cond; - leave_yellow(beam, &bl); - } -} - void h2_beam_timeout_set(h2_bucket_beam *beam, apr_interval_time_t timeout) { h2_beam_lock bl; @@ -516,13 +697,13 @@ void h2_beam_abort(h2_bucket_beam *beam) h2_beam_lock bl; if (enter_yellow(beam, &bl) == APR_SUCCESS) { - r_purge_reds(beam); - h2_blist_cleanup(&beam->red); - beam->aborted = 1; - report_consumption(beam, 0); - if (beam->m_cond) { - apr_thread_cond_broadcast(beam->m_cond); + if (!beam->aborted) { + beam->aborted = 1; + r_purge_sent(beam); + h2_blist_cleanup(&beam->send_list); + report_consumption(beam, &bl); } + apr_thread_cond_broadcast(beam->change); leave_yellow(beam, &bl); } } @@ -532,140 +713,145 @@ apr_status_t h2_beam_close(h2_bucket_bea h2_beam_lock bl; if (enter_yellow(beam, &bl) == APR_SUCCESS) { - r_purge_reds(beam); + r_purge_sent(beam); beam_close(beam); - report_consumption(beam, 0); + report_consumption(beam, &bl); leave_yellow(beam, &bl); } return beam->aborted? APR_ECONNABORTED : APR_SUCCESS; } -apr_status_t h2_beam_shutdown(h2_bucket_beam *beam, apr_read_type_e block, - int clear_buffers) +apr_status_t h2_beam_leave(h2_bucket_beam *beam) +{ + h2_beam_lock bl; + + if (enter_yellow(beam, &bl) == APR_SUCCESS) { + recv_buffer_cleanup(beam, &bl); + beam->aborted = 1; + beam_close(beam); + leave_yellow(beam, &bl); + } + return APR_SUCCESS; +} + +apr_status_t h2_beam_wait_empty(h2_bucket_beam *beam, apr_read_type_e block) { apr_status_t status; h2_beam_lock bl; if ((status = enter_yellow(beam, &bl)) == APR_SUCCESS) { - if (clear_buffers) { - r_purge_reds(beam); - h2_blist_cleanup(&beam->red); - } - beam_close(beam); - - while (status == APR_SUCCESS - && (!H2_BPROXY_LIST_EMPTY(&beam->proxies) - || (beam->green && !APR_BRIGADE_EMPTY(beam->green)))) { - if (block == APR_NONBLOCK_READ || !bl.mutex) { - status = APR_EAGAIN; - break; - } - if (beam->m_cond) { - apr_thread_cond_broadcast(beam->m_cond); - } - status = wait_cond(beam, bl.mutex); - } + status = wait_empty(beam, block, bl.mutex); leave_yellow(beam, &bl); } return status; } +static void move_to_hold(h2_bucket_beam *beam, + apr_bucket_brigade *sender_bb) +{ + apr_bucket *b; + while (sender_bb && !APR_BRIGADE_EMPTY(sender_bb)) { + b = APR_BRIGADE_FIRST(sender_bb); + APR_BUCKET_REMOVE(b); + H2_BLIST_INSERT_TAIL(&beam->send_list, b); + } +} + static apr_status_t append_bucket(h2_bucket_beam *beam, - apr_bucket *bred, + apr_bucket *b, apr_read_type_e block, - apr_pool_t *pool, + apr_size_t *pspace_left, h2_beam_lock *pbl) { const char *data; apr_size_t len; - apr_off_t space_left = 0; apr_status_t status; + int can_beam, check_len; + + if (beam->aborted) { + return APR_ECONNABORTED; + } - if (APR_BUCKET_IS_METADATA(bred)) { - if (APR_BUCKET_IS_EOS(bred)) { + if (APR_BUCKET_IS_METADATA(b)) { + if (APR_BUCKET_IS_EOS(b)) { beam->closed = 1; } - APR_BUCKET_REMOVE(bred); - H2_BLIST_INSERT_TAIL(&beam->red, bred); + APR_BUCKET_REMOVE(b); + H2_BLIST_INSERT_TAIL(&beam->send_list, b); return APR_SUCCESS; } - else if (APR_BUCKET_IS_FILE(bred)) { - /* file bucket lengths do not really count */ + else if (APR_BUCKET_IS_FILE(b)) { + /* For file buckets the problem is their internal readpool that + * is used on the first read to allocate buffer/mmap. + * Since setting aside a file bucket will de-register the + * file cleanup function from the previous pool, we need to + * call that only from the sender thread. + * + * Currently, we do not handle file bucket with refcount > 1 as + * the beam is then not in complete control of the file's lifetime. + * Which results in the bug that a file get closed by the receiver + * while the sender or the beam still have buckets using it. + * + * Additionally, we allow callbacks to prevent beaming file + * handles across. The use case for this is to limit the number + * of open file handles and rather use a less efficient beam + * transport. */ + apr_bucket_file *bf = b->data; + apr_file_t *fd = bf->fd; + can_beam = (bf->refcount.refcount == 1); + if (can_beam && beam->can_beam_fn) { + can_beam = beam->can_beam_fn(beam->can_beam_ctx, beam, fd); + } + check_len = !can_beam; } else { - space_left = calc_space_left(beam); - if (space_left > 0 && bred->length == ((apr_size_t)-1)) { + if (b->length == ((apr_size_t)-1)) { const char *data; - status = apr_bucket_read(bred, &data, &len, APR_BLOCK_READ); + status = apr_bucket_read(b, &data, &len, APR_BLOCK_READ); if (status != APR_SUCCESS) { return status; } } - - if (space_left < bred->length) { - status = r_wait_space(beam, block, pbl, &space_left); - if (status != APR_SUCCESS) { - return status; - } - if (space_left <= 0) { - return APR_EAGAIN; - } - } - /* space available, maybe need bucket split */ + check_len = 1; } + if (check_len) { + if (b->length > *pspace_left) { + apr_bucket_split(b, *pspace_left); + } + *pspace_left -= b->length; + } - /* The fundamental problem is that reading a red bucket from - * a green thread is a total NO GO, because the bucket might use + /* The fundamental problem is that reading a sender bucket from + * a receiver thread is a total NO GO, because the bucket might use * its pool/bucket_alloc from a foreign thread and that will * corrupt. */ status = APR_ENOTIMPL; - if (beam->closed && bred->length > 0) { - status = APR_EOF; - } - else if (APR_BUCKET_IS_TRANSIENT(bred)) { + if (APR_BUCKET_IS_TRANSIENT(b)) { /* this takes care of transient buckets and converts them * into heap ones. Other bucket types might or might not be * affected by this. */ - status = apr_bucket_setaside(bred, pool); + status = apr_bucket_setaside(b, beam->send_pool); } - else if (APR_BUCKET_IS_HEAP(bred)) { - /* For heap buckets read from a green thread is fine. The + else if (APR_BUCKET_IS_HEAP(b)) { + /* For heap buckets read from a receiver thread is fine. The * data will be there and live until the bucket itself is * destroyed. */ status = APR_SUCCESS; } - else if (APR_BUCKET_IS_POOL(bred)) { + else if (APR_BUCKET_IS_POOL(b)) { /* pool buckets are bastards that register at pool cleanup * to morph themselves into heap buckets. That may happen anytime, * even after the bucket data pointer has been read. So at - * any time inside the green thread, the pool bucket memory + * any time inside the receiver thread, the pool bucket memory * may disappear. yikes. */ - status = apr_bucket_read(bred, &data, &len, APR_BLOCK_READ); + status = apr_bucket_read(b, &data, &len, APR_BLOCK_READ); if (status == APR_SUCCESS) { - apr_bucket_heap_make(bred, data, len, NULL); + apr_bucket_heap_make(b, data, len, NULL); } } - else if (APR_BUCKET_IS_FILE(bred)) { - /* For file buckets the problem is their internal readpool that - * is used on the first read to allocate buffer/mmap. - * Since setting aside a file bucket will de-register the - * file cleanup function from the previous pool, we need to - * call that from a red thread. - * Additionally, we allow callbacks to prevent beaming file - * handles across. The use case for this is to limit the number - * of open file handles and rather use a less efficient beam - * transport. */ - apr_file_t *fd = ((apr_bucket_file *)bred->data)->fd; - int can_beam = 1; - if (beam->last_beamed != fd && beam->can_beam_fn) { - can_beam = beam->can_beam_fn(beam->can_beam_ctx, beam, fd); - } - if (can_beam) { - beam->last_beamed = fd; - status = apr_bucket_setaside(bred, pool); - } - /* else: enter ENOTIMPL case below */ + else if (APR_BUCKET_IS_FILE(b) && can_beam) { + status = apr_bucket_setaside(b, beam->send_pool); } if (status == APR_ENOTIMPL) { @@ -673,17 +859,11 @@ static apr_status_t append_bucket(h2_buc * but hope that after read, its data stays immutable for the * lifetime of the bucket. (see pool bucket handling above for * a counter example). - * We do the read while in a red thread, so that the bucket may + * We do the read while in the sender thread, so that the bucket may * use pools/allocators safely. */ - if (space_left < APR_BUCKET_BUFF_SIZE) { - space_left = APR_BUCKET_BUFF_SIZE; - } - if (space_left < bred->length) { - apr_bucket_split(bred, space_left); - } - status = apr_bucket_read(bred, &data, &len, APR_BLOCK_READ); + status = apr_bucket_read(b, &data, &len, APR_BLOCK_READ); if (status == APR_SUCCESS) { - status = apr_bucket_setaside(bred, pool); + status = apr_bucket_setaside(b, beam->send_pool); } } @@ -691,44 +871,65 @@ static apr_status_t append_bucket(h2_buc return status; } - APR_BUCKET_REMOVE(bred); - H2_BLIST_INSERT_TAIL(&beam->red, bred); - beam->sent_bytes += bred->length; - + APR_BUCKET_REMOVE(b); + H2_BLIST_INSERT_TAIL(&beam->send_list, b); + beam->sent_bytes += b->length; + return APR_SUCCESS; } +void h2_beam_send_from(h2_bucket_beam *beam, apr_pool_t *p) +{ + h2_beam_lock bl; + /* Called from the sender thread to add buckets to the beam */ + if (enter_yellow(beam, &bl) == APR_SUCCESS) { + r_purge_sent(beam); + beam_set_send_pool(beam, p); + leave_yellow(beam, &bl); + } +} + apr_status_t h2_beam_send(h2_bucket_beam *beam, - apr_bucket_brigade *red_brigade, + apr_bucket_brigade *sender_bb, apr_read_type_e block) { - apr_bucket *bred; - apr_status_t status = APR_SUCCESS; + apr_bucket *b; + apr_status_t rv = APR_SUCCESS; + apr_size_t space_left = 0; h2_beam_lock bl; - /* Called from the red thread to add buckets to the beam */ + /* Called from the sender thread to add buckets to the beam */ if (enter_yellow(beam, &bl) == APR_SUCCESS) { - r_purge_reds(beam); + ap_assert(beam->send_pool); + r_purge_sent(beam); if (beam->aborted) { - status = APR_ECONNABORTED; + move_to_hold(beam, sender_bb); + rv = APR_ECONNABORTED; } - else if (red_brigade) { - int force_report = !APR_BRIGADE_EMPTY(red_brigade); - while (!APR_BRIGADE_EMPTY(red_brigade) - && status == APR_SUCCESS) { - bred = APR_BRIGADE_FIRST(red_brigade); - status = append_bucket(beam, bred, block, beam->red_pool, &bl); - } - report_production(beam, force_report); - if (beam->m_cond) { - apr_thread_cond_broadcast(beam->m_cond); + else if (sender_bb) { + int force_report = !APR_BRIGADE_EMPTY(sender_bb); + + space_left = calc_space_left(beam); + while (!APR_BRIGADE_EMPTY(sender_bb) && APR_SUCCESS == rv) { + if (space_left <= 0) { + report_prod_io(beam, force_report, &bl); + rv = wait_not_full(beam, block, &space_left, &bl); + if (APR_SUCCESS != rv) { + break; + } + } + b = APR_BRIGADE_FIRST(sender_bb); + rv = append_bucket(beam, b, block, &space_left, &bl); } + + report_prod_io(beam, force_report, &bl); + apr_thread_cond_broadcast(beam->change); } - report_consumption(beam, 0); + report_consumption(beam, &bl); leave_yellow(beam, &bl); } - return status; + return rv; } apr_status_t h2_beam_receive(h2_bucket_beam *beam, @@ -737,63 +938,75 @@ apr_status_t h2_beam_receive(h2_bucket_b apr_off_t readbytes) { h2_beam_lock bl; - apr_bucket *bred, *bgreen, *ng; + apr_bucket *bsender, *brecv, *ng; int transferred = 0; apr_status_t status = APR_SUCCESS; - apr_off_t remain = readbytes; + apr_off_t remain; + int transferred_buckets = 0; - /* Called from the green thread to take buckets from the beam */ + /* Called from the receiver thread to take buckets from the beam */ if (enter_yellow(beam, &bl) == APR_SUCCESS) { + if (readbytes <= 0) { + readbytes = APR_SIZE_MAX; + } + remain = readbytes; + transfer: if (beam->aborted) { - if (beam->green && !APR_BRIGADE_EMPTY(beam->green)) { - apr_brigade_cleanup(beam->green); - } + recv_buffer_cleanup(beam, &bl); status = APR_ECONNABORTED; goto leave; } - /* transfer enough buckets from our green brigade, if we have one */ - while (beam->green - && !APR_BRIGADE_EMPTY(beam->green) - && (readbytes <= 0 || remain >= 0)) { - bgreen = APR_BRIGADE_FIRST(beam->green); - if (readbytes > 0 && bgreen->length > 0 && remain <= 0) { + /* transfer enough buckets from our receiver brigade, if we have one */ + while (remain >= 0 + && beam->recv_buffer + && !APR_BRIGADE_EMPTY(beam->recv_buffer)) { + + brecv = APR_BRIGADE_FIRST(beam->recv_buffer); + if (brecv->length > 0 && remain <= 0) { break; } - APR_BUCKET_REMOVE(bgreen); - APR_BRIGADE_INSERT_TAIL(bb, bgreen); - remain -= bgreen->length; + APR_BUCKET_REMOVE(brecv); + APR_BRIGADE_INSERT_TAIL(bb, brecv); + remain -= brecv->length; ++transferred; } - /* transfer from our red brigade, transforming red buckets to - * green ones until we have enough */ - while (!H2_BLIST_EMPTY(&beam->red) && (readbytes <= 0 || remain >= 0)) { - bred = H2_BLIST_FIRST(&beam->red); - bgreen = NULL; - - if (readbytes > 0 && bred->length > 0 && remain <= 0) { + /* transfer from our sender brigade, transforming sender buckets to + * receiver ones until we have enough */ + while (remain >= 0 && !H2_BLIST_EMPTY(&beam->send_list)) { + + brecv = NULL; + bsender = H2_BLIST_FIRST(&beam->send_list); + if (bsender->length > 0 && remain <= 0) { break; } - if (APR_BUCKET_IS_METADATA(bred)) { - if (APR_BUCKET_IS_EOS(bred)) { - bgreen = apr_bucket_eos_create(bb->bucket_alloc); + if (APR_BUCKET_IS_METADATA(bsender)) { + if (APR_BUCKET_IS_EOS(bsender)) { + brecv = apr_bucket_eos_create(bb->bucket_alloc); beam->close_sent = 1; } - else if (APR_BUCKET_IS_FLUSH(bred)) { - bgreen = apr_bucket_flush_create(bb->bucket_alloc); + else if (APR_BUCKET_IS_FLUSH(bsender)) { + brecv = apr_bucket_flush_create(bb->bucket_alloc); } - else { - /* put red into hold, no green sent out */ + else if (AP_BUCKET_IS_ERROR(bsender)) { + ap_bucket_error *eb = (ap_bucket_error *)bsender; + brecv = ap_bucket_error_create(eb->status, eb->data, + bb->p, bb->bucket_alloc); } } - else if (APR_BUCKET_IS_FILE(bred)) { + else if (bsender->length == 0) { + APR_BUCKET_REMOVE(bsender); + H2_BLIST_INSERT_TAIL(&beam->hold_list, bsender); + continue; + } + else if (APR_BUCKET_IS_FILE(bsender)) { /* This is set aside into the target brigade pool so that * any read operation messes with that pool and not - * the red one. */ - apr_bucket_file *f = (apr_bucket_file *)bred->data; + * the sender one. */ + apr_bucket_file *f = (apr_bucket_file *)bsender->data; apr_file_t *fd = f->fd; int setaside = (f->readpool != bb->p); @@ -804,7 +1017,7 @@ transfer: } ++beam->files_beamed; } - ng = apr_brigade_insert_file(bb, fd, bred->start, bred->length, + ng = apr_brigade_insert_file(bb, fd, bsender->start, bsender->length, bb->p); #if APR_HAS_MMAP /* disable mmap handling as this leads to segfaults when @@ -812,55 +1025,70 @@ transfer: * been handed out. See also PR 59348 */ apr_bucket_file_enable_mmap(ng, 0); #endif - remain -= bred->length; - ++transferred; - APR_BUCKET_REMOVE(bred); - H2_BLIST_INSERT_TAIL(&beam->hold, bred); + APR_BUCKET_REMOVE(bsender); + H2_BLIST_INSERT_TAIL(&beam->hold_list, bsender); + + remain -= bsender->length; ++transferred; + ++transferred_buckets; continue; } else { - /* create a "green" standin bucket. we took care about the - * underlying red bucket and its data when we placed it into - * the red brigade. - * the beam bucket will notify us on destruction that bred is + /* create a "receiver" standin bucket. we took care about the + * underlying sender bucket and its data when we placed it into + * the sender brigade. + * the beam bucket will notify us on destruction that bsender is * no longer needed. */ - bgreen = h2_beam_bucket_create(beam, bred, bb->bucket_alloc, + brecv = h2_beam_bucket_create(beam, bsender, bb->bucket_alloc, beam->buckets_sent++); } - /* Place the red bucket into our hold, to be destroyed when no - * green bucket references it any more. */ - APR_BUCKET_REMOVE(bred); - H2_BLIST_INSERT_TAIL(&beam->hold, bred); - beam->received_bytes += bred->length; - if (bgreen) { - APR_BRIGADE_INSERT_TAIL(bb, bgreen); - remain -= bgreen->length; + /* Place the sender bucket into our hold, to be destroyed when no + * receiver bucket references it any more. */ + APR_BUCKET_REMOVE(bsender); + H2_BLIST_INSERT_TAIL(&beam->hold_list, bsender); + + beam->received_bytes += bsender->length; + ++transferred_buckets; + + if (brecv) { + APR_BRIGADE_INSERT_TAIL(bb, brecv); + remain -= brecv->length; ++transferred; } + else { + /* let outside hook determine how bucket is beamed */ + leave_yellow(beam, &bl); + brecv = h2_beam_bucket(beam, bb, bsender); + enter_yellow(beam, &bl); + + while (brecv && brecv != APR_BRIGADE_SENTINEL(bb)) { + ++transferred; + remain -= brecv->length; + brecv = APR_BUCKET_NEXT(brecv); + } + } } - if (readbytes > 0 && remain < 0) { - /* too much, put some back */ + if (remain < 0) { + /* too much, put some back into out recv_buffer */ remain = readbytes; - for (bgreen = APR_BRIGADE_FIRST(bb); - bgreen != APR_BRIGADE_SENTINEL(bb); - bgreen = APR_BUCKET_NEXT(bgreen)) { - remain -= bgreen->length; - if (remain < 0) { - apr_bucket_split(bgreen, bgreen->length+remain); - beam->green = apr_brigade_split_ex(bb, - APR_BUCKET_NEXT(bgreen), - beam->green); - break; - } + for (brecv = APR_BRIGADE_FIRST(bb); + brecv != APR_BRIGADE_SENTINEL(bb); + brecv = APR_BUCKET_NEXT(brecv)) { + remain -= (beam->tx_mem_limits? bucket_mem_used(brecv) + : brecv->length); + if (remain < 0) { + apr_bucket_split(brecv, brecv->length+remain); + beam->recv_buffer = apr_brigade_split_ex(bb, + APR_BUCKET_NEXT(brecv), + beam->recv_buffer); + break; + } } } - if (beam->closed - && (!beam->green || APR_BRIGADE_EMPTY(beam->green)) - && H2_BLIST_EMPTY(&beam->red)) { + if (beam->closed && buffer_is_empty(beam)) { /* beam is closed and we have nothing more to receive */ if (!beam->close_sent) { apr_bucket *b = apr_bucket_eos_create(bb->bucket_alloc); @@ -871,22 +1099,23 @@ transfer: } } + if (transferred_buckets > 0) { + if (beam->cons_ev_cb) { + beam->cons_ev_cb(beam->cons_ctx, beam); + } + } + if (transferred) { + apr_thread_cond_broadcast(beam->change); status = APR_SUCCESS; } - else if (beam->closed) { - status = APR_EOF; - } - else if (block == APR_BLOCK_READ && bl.mutex && beam->m_cond) { - status = wait_cond(beam, bl.mutex); + else { + status = wait_not_empty(beam, block, bl.mutex); if (status != APR_SUCCESS) { goto leave; } goto transfer; } - else { - status = APR_EAGAIN; - } leave: leave_yellow(beam, &bl); } @@ -894,25 +1123,25 @@ leave: } void h2_beam_on_consumed(h2_bucket_beam *beam, - h2_beam_io_callback *cb, void *ctx) + h2_beam_ev_callback *ev_cb, + h2_beam_io_callback *io_cb, void *ctx) { h2_beam_lock bl; - if (enter_yellow(beam, &bl) == APR_SUCCESS) { - beam->consumed_fn = cb; - beam->consumed_ctx = ctx; + beam->cons_ev_cb = ev_cb; + beam->cons_io_cb = io_cb; + beam->cons_ctx = ctx; leave_yellow(beam, &bl); } } void h2_beam_on_produced(h2_bucket_beam *beam, - h2_beam_io_callback *cb, void *ctx) + h2_beam_io_callback *io_cb, void *ctx) { h2_beam_lock bl; - if (enter_yellow(beam, &bl) == APR_SUCCESS) { - beam->produced_fn = cb; - beam->produced_ctx = ctx; + beam->prod_io_cb = io_cb; + beam->prod_ctx = ctx; leave_yellow(beam, &bl); } } @@ -937,8 +1166,8 @@ apr_off_t h2_beam_get_buffered(h2_bucket h2_beam_lock bl; if (enter_yellow(beam, &bl) == APR_SUCCESS) { - for (b = H2_BLIST_FIRST(&beam->red); - b != H2_BLIST_SENTINEL(&beam->red); + for (b = H2_BLIST_FIRST(&beam->send_list); + b != H2_BLIST_SENTINEL(&beam->send_list); b = APR_BUCKET_NEXT(b)) { /* should all have determinate length */ l += b->length; @@ -955,16 +1184,10 @@ apr_off_t h2_beam_get_mem_used(h2_bucket h2_beam_lock bl; if (enter_yellow(beam, &bl) == APR_SUCCESS) { - for (b = H2_BLIST_FIRST(&beam->red); - b != H2_BLIST_SENTINEL(&beam->red); + for (b = H2_BLIST_FIRST(&beam->send_list); + b != H2_BLIST_SENTINEL(&beam->send_list); b = APR_BUCKET_NEXT(b)) { - if (APR_BUCKET_IS_FILE(b)) { - /* do not count */ - } - else { - /* should all have determinate length */ - l += b->length; - } + l += bucket_mem_used(b); } leave_yellow(beam, &bl); } @@ -977,16 +1200,23 @@ int h2_beam_empty(h2_bucket_beam *beam) h2_beam_lock bl; if (enter_yellow(beam, &bl) == APR_SUCCESS) { - empty = (H2_BLIST_EMPTY(&beam->red) - && (!beam->green || APR_BRIGADE_EMPTY(beam->green))); + empty = (H2_BLIST_EMPTY(&beam->send_list) + && (!beam->recv_buffer || APR_BRIGADE_EMPTY(beam->recv_buffer))); leave_yellow(beam, &bl); } return empty; } -int h2_beam_closed(h2_bucket_beam *beam) +int h2_beam_holds_proxies(h2_bucket_beam *beam) { - return beam->closed; + int has_proxies = 1; + h2_beam_lock bl; + + if (enter_yellow(beam, &bl) == APR_SUCCESS) { + has_proxies = !H2_BPROXY_LIST_EMPTY(&beam->proxies); + leave_yellow(beam, &bl); + } + return has_proxies; } int h2_beam_was_received(h2_bucket_beam *beam) @@ -1013,3 +1243,31 @@ apr_size_t h2_beam_get_files_beamed(h2_b return n; } +int h2_beam_no_files(void *ctx, h2_bucket_beam *beam, apr_file_t *file) +{ + return 0; +} + +int h2_beam_report_consumption(h2_bucket_beam *beam) +{ + h2_beam_lock bl; + int rv = 0; + if (enter_yellow(beam, &bl) == APR_SUCCESS) { + rv = report_consumption(beam, &bl); + leave_yellow(beam, &bl); + } + return rv; +} + +void h2_beam_log(h2_bucket_beam *beam, conn_rec *c, int level, const char *msg) +{ + if (beam && APLOG_C_IS_LEVEL(c,level)) { + ap_log_cerror(APLOG_MARK, level, 0, c, + "beam(%ld-%d,%s,closed=%d,aborted=%d,empty=%d,buf=%ld): %s", + (c->master? c->master->id : c->id), beam->id, beam->tag, + beam->closed, beam->aborted, h2_beam_empty(beam), + (long)h2_beam_get_buffered(beam), msg); + } +} + + diff -up --new-file httpd-2.4.23/modules/http2/h2_bucket_beam.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_bucket_beam.h --- httpd-2.4.23/modules/http2/h2_bucket_beam.h 2016-06-09 12:38:10.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_bucket_beam.h 2017-10-13 10:37:45.000000000 +0200 @@ -51,19 +51,6 @@ typedef struct { APR_RING_PREPEND(&(a)->list, &(b)->list, apr_bucket, link); \ } while (0) -/** - * Print the buckets in the list into the buffer (type and lengths). - * @param buffer the buffer to print into - * @param bmax max number of characters to place in buffer, incl. trailing 0 - * @param tag tag string for this bucket list - * @param sep separator to use - * @param bl the bucket list to print - * @return number of characters printed - */ -apr_size_t h2_util_bl_print(char *buffer, apr_size_t bmax, - const char *tag, const char *sep, - h2_blist *bl); - /******************************************************************************* * h2_bucket_beam ******************************************************************************/ @@ -72,27 +59,25 @@ apr_size_t h2_util_bl_print(char *buffer * A h2_bucket_beam solves the task of transferring buckets, esp. their data, * across threads with zero buffer copies. * - * When a thread, let's call it the red thread, wants to send buckets to + * When a thread, let's call it the sender thread, wants to send buckets to * another, the green thread, it creates a h2_bucket_beam and adds buckets * via the h2_beam_send(). It gives the beam to the green thread which then * can receive buckets into its own brigade via h2_beam_receive(). * - * Sending and receiving can happen concurrently, if a thread mutex is set - * for the beam, see h2_beam_mutex_set. + * Sending and receiving can happen concurrently. * * The beam can limit the amount of data it accepts via the buffer_size. This - * can also be adjusted during its lifetime. When the beam not only gets a - * mutex but als a condition variable (in h2_beam_mutex_set()), sends and - * receives can be done blocking. A timeout can be set for such blocks. + * can also be adjusted during its lifetime. Sends and receives can be done blocking. + * A timeout can be set for such blocks. * * Care needs to be taken when terminating the beam. The beam registers at * the pool it was created with and will cleanup after itself. However, if * received buckets do still exist, already freed memory might be accessed. - * The beam does a AP_DEBUG_ASSERT on this condition. + * The beam does a assertion on this condition. * * The proper way of shutting down a beam is to first make sure there are no * more green buckets out there, then cleanup the beam to purge eventually - * still existing red buckets and then, possibly, terminate the beam itself + * still existing sender buckets and then, possibly, terminate the beam itself * (or the pool it was created with). * * The following restrictions apply to bucket transport: @@ -105,32 +90,32 @@ apr_size_t h2_util_bl_print(char *buffer * - file buckets will transfer the file itself into a new bucket, if allowed * - all other buckets are read on send to make sure data is present * - * This assures that when the red thread sends its red buckets, the data - * is made accessible while still on the red side. The red bucket then enters + * This assures that when the sender thread sends its sender buckets, the data + * is made accessible while still on the sender side. The sender bucket then enters * the beams hold storage. - * When the green thread calls receive, red buckets in the hold are wrapped + * When the green thread calls receive, sender buckets in the hold are wrapped * into special beam buckets. Beam buckets on read present the data directly - * from the internal red one, but otherwise live on the green side. When a + * from the internal sender one, but otherwise live on the green side. When a * beam bucket gets destroyed, it notifies its beam that the corresponding - * red bucket from the hold may be destroyed. + * sender bucket from the hold may be destroyed. * Since the destruction of green buckets happens in the green thread, any - * corresponding red bucket can not immediately be destroyed, as that would + * corresponding sender bucket can not immediately be destroyed, as that would * result in race conditions. - * Instead, the beam transfers such red buckets from the hold to the purge - * storage. Next time there is a call from the red side, the buckets in + * Instead, the beam transfers such sender buckets from the hold to the purge + * storage. Next time there is a call from the sender side, the buckets in * purge will be deleted. * - * There are callbacks that can be registered with a beam: - * - a "consumed" callback that gets called on the red side with the + * There are callbacks that can be registesender with a beam: + * - a "consumed" callback that gets called on the sender side with the * amount of data that has been received by the green side. The amount - * is a delta from the last callback invocation. The red side can trigger + * is a delta from the last callback invocation. The sender side can trigger * these callbacks by calling h2_beam_send() with a NULL brigade. * - a "can_beam_file" callback that can prohibit the transfer of file handles * through the beam. This will cause file buckets to be read on send and * its data buffer will then be transports just like a heap bucket would. * When no callback is registered, no restrictions apply and all files are * passed through. - * File handles transferred to the green side will stay there until the + * File handles transfersender to the green side will stay there until the * receiving brigade's pool is destroyed/cleared. If the pool lives very * long or if many different files are beamed, the process might run out * of available file handles. @@ -154,6 +139,7 @@ typedef apr_status_t h2_beam_mutex_enter typedef void h2_beam_io_callback(void *ctx, h2_bucket_beam *beam, apr_off_t bytes); +typedef void h2_beam_ev_callback(void *ctx, h2_bucket_beam *beam); typedef struct h2_beam_proxy h2_beam_proxy; typedef struct { @@ -163,15 +149,29 @@ typedef struct { typedef int h2_beam_can_beam_callback(void *ctx, h2_bucket_beam *beam, apr_file_t *file); +typedef enum { + H2_BEAM_OWNER_SEND, + H2_BEAM_OWNER_RECV +} h2_beam_owner_t; + +/** + * Will deny all transfer of apr_file_t across the beam and force + * a data copy instead. + */ +int h2_beam_no_files(void *ctx, h2_bucket_beam *beam, apr_file_t *file); + struct h2_bucket_beam { int id; const char *tag; - h2_blist red; - h2_blist hold; - h2_blist purge; - apr_bucket_brigade *green; + apr_pool_t *pool; + h2_beam_owner_t owner; + h2_blist send_list; + h2_blist hold_list; + h2_blist purge_list; + apr_bucket_brigade *recv_buffer; h2_bproxy_list proxies; - apr_pool_t *red_pool; + apr_pool_t *send_pool; + apr_pool_t *recv_pool; apr_size_t max_buf_size; apr_interval_time_t timeout; @@ -181,22 +181,24 @@ struct h2_bucket_beam { apr_size_t buckets_sent; /* # of beam buckets sent */ apr_size_t files_beamed; /* how many file handles have been set aside */ - apr_file_t *last_beamed; /* last file beamed */ unsigned int aborted : 1; unsigned int closed : 1; unsigned int close_sent : 1; + unsigned int tx_mem_limits : 1; /* only memory size counts on transfers */ - void *m_ctx; - h2_beam_mutex_enter *m_enter; - struct apr_thread_cond_t *m_cond; + struct apr_thread_mutex_t *lock; + struct apr_thread_cond_t *change; - apr_off_t reported_consumed_bytes; /* amount of bytes reported as consumed */ - h2_beam_io_callback *consumed_fn; - void *consumed_ctx; - apr_off_t reported_produced_bytes; /* amount of bytes reported as produced */ - h2_beam_io_callback *produced_fn; - void *produced_ctx; + apr_off_t cons_bytes_reported; /* amount of bytes reported as consumed */ + h2_beam_ev_callback *cons_ev_cb; + h2_beam_io_callback *cons_io_cb; + void *cons_ctx; + + apr_off_t prod_bytes_reported; /* amount of bytes reported as produced */ + h2_beam_io_callback *prod_io_cb; + void *prod_ctx; + h2_beam_can_beam_callback *can_beam_fn; void *can_beam_ctx; }; @@ -208,22 +210,25 @@ struct h2_bucket_beam { * mutex and will be used in multiple threads. It needs a pool allocator * that is only used inside that same mutex. * - * @param pbeam will hold the created beam on return - * @param red_pool pool usable on red side, beam lifeline + * @param pbeam will hold the created beam on return + * @param pool pool owning the beam, beam will cleanup when pool released + * @param id identifier of the beam + * @param tag tag identifying beam for logging + * @param owner if the beam is owned by the sender or receiver, e.g. if + * the pool owner is using this beam for sending or receiving * @param buffer_size maximum memory footprint of buckets buffered in beam, or * 0 for no limitation - * - * Call from the red side only. + * @param timeout timeout for blocking operations */ apr_status_t h2_beam_create(h2_bucket_beam **pbeam, - apr_pool_t *red_pool, - int id, const char *tag, - apr_size_t buffer_size); + apr_pool_t *pool, + int id, const char *tag, + h2_beam_owner_t owner, + apr_size_t buffer_size, + apr_interval_time_t timeout); /** * Destroys the beam immediately without cleanup. - * - * Call from the red side only. */ apr_status_t h2_beam_destroy(h2_bucket_beam *beam); @@ -233,19 +238,26 @@ apr_status_t h2_beam_destroy(h2_bucket_b * All accepted buckets are removed from the given brigade. Will return with * APR_EAGAIN on non-blocking sends when not all buckets could be accepted. * - * Call from the red side only. + * Call from the sender side only. */ apr_status_t h2_beam_send(h2_bucket_beam *beam, - apr_bucket_brigade *red_buckets, + apr_bucket_brigade *bb, apr_read_type_e block); /** + * Register the pool from which future buckets are send. This defines + * the lifetime of the buckets, e.g. the pool should not be cleared/destroyed + * until the data is no longer needed (or has been received). + */ +void h2_beam_send_from(h2_bucket_beam *beam, apr_pool_t *p); + +/** * Receive buckets from the beam into the given brigade. Will return APR_EOF * when reading past an EOS bucket. Reads can be blocking until data is * available or the beam has been closed. Non-blocking calls return APR_EAGAIN * if no data is available. * - * Call from the green side only. + * Call from the receiver side only. */ apr_status_t h2_beam_receive(h2_bucket_beam *beam, apr_bucket_brigade *green_buckets, @@ -253,35 +265,41 @@ apr_status_t h2_beam_receive(h2_bucket_b apr_off_t readbytes); /** - * Determine if beam is closed. May still contain buffered data. - * - * Call from red or green side. + * Determine if beam is empty. */ -int h2_beam_closed(h2_bucket_beam *beam); +int h2_beam_empty(h2_bucket_beam *beam); /** - * Determine if beam is empty. - * - * Call from red or green side. + * Determine if beam has handed out proxy buckets that are not destroyed. */ -int h2_beam_empty(h2_bucket_beam *beam); +int h2_beam_holds_proxies(h2_bucket_beam *beam); /** * Abort the beam. Will cleanup any buffered buckets and answer all send * and receives with APR_ECONNABORTED. * - * Call from the red side only. + * Call from the sender side only. */ void h2_beam_abort(h2_bucket_beam *beam); /** * Close the beam. Sending an EOS bucket serves the same purpose. * - * Call from the red side only. + * Call from the sender side only. */ apr_status_t h2_beam_close(h2_bucket_beam *beam); /** + * Receives leaves the beam, e.g. will no longer read. This will + * interrupt any sender blocked writing and fail future send. + * + * Call from the receiver side only. + */ +apr_status_t h2_beam_leave(h2_bucket_beam *beam); + +int h2_beam_is_closed(h2_bucket_beam *beam); + +/** * Return APR_SUCCESS when all buckets in transit have been handled. * When called with APR_BLOCK_READ and a mutex set, will wait until the green * side has consumed all data. Otherwise APR_EAGAIN is returned. @@ -289,15 +307,9 @@ apr_status_t h2_beam_close(h2_bucket_bea * If a timeout is set on the beam, waiting might also time out and * return APR_ETIMEUP. * - * Call from the red side only. + * Call from the sender side only. */ -apr_status_t h2_beam_shutdown(h2_bucket_beam *beam, apr_read_type_e block, - int clear_buffers); - -void h2_beam_mutex_set(h2_bucket_beam *beam, - h2_beam_mutex_enter m_enter, - struct apr_thread_cond_t *cond, - void *m_ctx); +apr_status_t h2_beam_wait_empty(h2_bucket_beam *beam, apr_read_type_e block); /** * Set/get the timeout for blocking read/write operations. Only works @@ -315,31 +327,53 @@ void h2_beam_buffer_size_set(h2_bucket_b apr_size_t h2_beam_buffer_size_get(h2_bucket_beam *beam); /** - * Register a callback to be invoked on the red side with the - * amount of bytes that have been consumed by the red side, since the + * Register a callback to be invoked on the sender side with the + * amount of bytes that have been consumed by the receiver, since the * last callback invocation or reset. * @param beam the beam to set the callback on - * @param cb the callback or NULL + * @param ev_cb the callback or NULL, called when bytes are consumed + * @param io_cb the callback or NULL, called on sender with bytes consumed * @param ctx the context to use in callback invocation * - * Call from the red side, callbacks invoked on red side. + * Call from the sender side, io callbacks invoked on sender side, ev callback + * from any side. */ void h2_beam_on_consumed(h2_bucket_beam *beam, - h2_beam_io_callback *cb, void *ctx); + h2_beam_ev_callback *ev_cb, + h2_beam_io_callback *io_cb, void *ctx); + +/** + * Call any registered consumed handler, if any changes have happened + * since the last invocation. + * @return !=0 iff a handler has been called + * + * Needs to be invoked from the sending side. + */ +int h2_beam_report_consumption(h2_bucket_beam *beam); /** - * Register a callback to be invoked on the red side with the - * amount of bytes that have been consumed by the red side, since the + * Register a callback to be invoked on the receiver side with the + * amount of bytes that have been produces by the sender, since the * last callback invocation or reset. * @param beam the beam to set the callback on - * @param cb the callback or NULL + * @param io_cb the callback or NULL, called on receiver with bytes produced * @param ctx the context to use in callback invocation * - * Call from the red side, callbacks invoked on red side. + * Call from the receiver side, callbacks invoked on either side. */ void h2_beam_on_produced(h2_bucket_beam *beam, - h2_beam_io_callback *cb, void *ctx); + h2_beam_io_callback *io_cb, void *ctx); +/** + * Register a callback that may prevent a file from being beam as + * file handle, forcing the file content to be copied. Then no callback + * is set (NULL), file handles are transferred directly. + * @param beam the beam to set the callback on + * @param io_cb the callback or NULL, called on receiver with bytes produced + * @param ctx the context to use in callback invocation + * + * Call from the receiver side, callbacks invoked on either side. + */ void h2_beam_on_file_beam(h2_bucket_beam *beam, h2_beam_can_beam_callback *cb, void *ctx); @@ -360,4 +394,12 @@ int h2_beam_was_received(h2_bucket_beam apr_size_t h2_beam_get_files_beamed(h2_bucket_beam *beam); +typedef apr_bucket *h2_bucket_beamer(h2_bucket_beam *beam, + apr_bucket_brigade *dest, + const apr_bucket *src); + +void h2_register_bucket_beamer(h2_bucket_beamer *beamer); + +void h2_beam_log(h2_bucket_beam *beam, conn_rec *c, int level, const char *msg); + #endif /* h2_bucket_beam_h */ diff -up --new-file httpd-2.4.23/modules/http2/h2_bucket_eoc.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_bucket_eoc.c --- httpd-2.4.23/modules/http2/h2_bucket_eoc.c 2016-05-23 12:55:29.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_bucket_eoc.c 1970-01-01 01:00:00.000000000 +0100 @@ -1,110 +0,0 @@ -/* Licensed to the Apache Software Foundation (ASF) under one or more - * contributor license agreements. See the NOTICE file distributed with - * this work for additional information regarding copyright ownership. - * The ASF licenses this file to You under the Apache License, Version 2.0 - * (the "License"); you may not use this file except in compliance with - * the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include <assert.h> -#include <stddef.h> - -#include <httpd.h> -#include <http_core.h> -#include <http_connection.h> -#include <http_log.h> - -#include "h2_private.h" -#include "h2.h" -#include "h2_mplx.h" -#include "h2_session.h" -#include "h2_bucket_eoc.h" - -typedef struct { - apr_bucket_refcount refcount; - h2_session *session; -} h2_bucket_eoc; - -static apr_status_t bucket_cleanup(void *data) -{ - h2_session **psession = data; - - if (*psession) { - /* - * If bucket_destroy is called after us, this prevents - * bucket_destroy from trying to destroy the pool again. - */ - *psession = NULL; - } - return APR_SUCCESS; -} - -static apr_status_t bucket_read(apr_bucket *b, const char **str, - apr_size_t *len, apr_read_type_e block) -{ - (void)b; - (void)block; - *str = NULL; - *len = 0; - return APR_SUCCESS; -} - -apr_bucket * h2_bucket_eoc_make(apr_bucket *b, h2_session *session) -{ - h2_bucket_eoc *h; - - h = apr_bucket_alloc(sizeof(*h), b->list); - h->session = session; - - b = apr_bucket_shared_make(b, h, 0, 0); - b->type = &h2_bucket_type_eoc; - - return b; -} - -apr_bucket * h2_bucket_eoc_create(apr_bucket_alloc_t *list, h2_session *session) -{ - apr_bucket *b = apr_bucket_alloc(sizeof(*b), list); - - APR_BUCKET_INIT(b); - b->free = apr_bucket_free; - b->list = list; - b = h2_bucket_eoc_make(b, session); - if (session) { - h2_bucket_eoc *h = b->data; - apr_pool_pre_cleanup_register(session->pool, &h->session, bucket_cleanup); - } - return b; -} - -static void bucket_destroy(void *data) -{ - h2_bucket_eoc *h = data; - - if (apr_bucket_shared_destroy(h)) { - h2_session *session = h->session; - apr_bucket_free(h); - if (session) { - h2_session_eoc_callback(session); - /* all is gone now */ - } - } -} - -const apr_bucket_type_t h2_bucket_type_eoc = { - "H2EOC", 5, APR_BUCKET_METADATA, - bucket_destroy, - bucket_read, - apr_bucket_setaside_noop, - apr_bucket_split_notimpl, - apr_bucket_shared_copy -}; - diff -up --new-file httpd-2.4.23/modules/http2/h2_bucket_eoc.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_bucket_eoc.h --- httpd-2.4.23/modules/http2/h2_bucket_eoc.h 2016-05-23 12:55:29.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_bucket_eoc.h 1970-01-01 01:00:00.000000000 +0100 @@ -1,32 +0,0 @@ -/* Copyright 2015 greenbytes GmbH (https://www.greenbytes.de) - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#ifndef mod_http2_h2_bucket_eoc_h -#define mod_http2_h2_bucket_eoc_h - -struct h2_session; - -/** End Of HTTP/2 SESSION (H2EOC) bucket */ -extern const apr_bucket_type_t h2_bucket_type_eoc; - -#define H2_BUCKET_IS_H2EOC(e) (e->type == &h2_bucket_type_eoc) - -apr_bucket * h2_bucket_eoc_make(apr_bucket *b, - struct h2_session *session); - -apr_bucket * h2_bucket_eoc_create(apr_bucket_alloc_t *list, - struct h2_session *session); - -#endif /* mod_http2_h2_bucket_eoc_h */ diff -up --new-file httpd-2.4.23/modules/http2/h2_bucket_eos.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_bucket_eos.c --- httpd-2.4.23/modules/http2/h2_bucket_eos.c 2016-06-07 13:29:51.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_bucket_eos.c 2017-02-14 16:53:50.000000000 +0100 @@ -95,7 +95,7 @@ static void bucket_destroy(void *data) } apr_bucket_free(h); if (stream) { - h2_stream_eos_destroy(stream); + h2_stream_dispatch(stream, H2_SEV_EOS_SENT); } } } diff -up --new-file httpd-2.4.23/modules/http2/h2_config.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_config.c --- httpd-2.4.23/modules/http2/h2_config.c 2016-03-02 12:21:28.000000000 +0100 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_config.c 2017-03-31 21:41:01.000000000 +0200 @@ -48,12 +48,11 @@ static h2_config defconf = { -1, /* min workers */ -1, /* max workers */ 10 * 60, /* max workers idle secs */ - 64 * 1024, /* stream max mem size */ + 32 * 1024, /* stream max mem size */ NULL, /* no alt-svcs */ -1, /* alt-svc max age */ 0, /* serialize headers */ -1, /* h2 direct mode */ - -1, /* # session extra files */ 1, /* modern TLS only */ -1, /* HTTP/1 Upgrade support */ 1024*1024, /* TLS warmup size */ @@ -61,7 +60,9 @@ static h2_config defconf = { 1, /* HTTP/2 server push enabled */ NULL, /* map of content-type to priorities */ 256, /* push diary size */ - + 0, /* copy files across threads */ + NULL, /* push list */ + 0, /* early hints, http status 103 */ }; void h2_config_init(apr_pool_t *pool) @@ -73,7 +74,6 @@ static void *h2_config_create(apr_pool_t const char *prefix, const char *x) { h2_config *conf = (h2_config *)apr_pcalloc(pool, sizeof(h2_config)); - const char *s = x? x : "unknown"; char *name = apr_pstrcat(pool, prefix, "[", s, "]", NULL); @@ -87,7 +87,6 @@ static void *h2_config_create(apr_pool_t conf->alt_svc_max_age = DEF_VAL; conf->serialize_headers = DEF_VAL; conf->h2_direct = DEF_VAL; - conf->session_extra_files = DEF_VAL; conf->modern_tls_only = DEF_VAL; conf->h2_upgrade = DEF_VAL; conf->tls_warmup_size = DEF_VAL; @@ -95,7 +94,9 @@ static void *h2_config_create(apr_pool_t conf->h2_push = DEF_VAL; conf->priorities = NULL; conf->push_diary_size = DEF_VAL; - + conf->copy_files = DEF_VAL; + conf->push_list = NULL; + conf->early_hints = DEF_VAL; return conf; } @@ -109,12 +110,11 @@ void *h2_config_create_dir(apr_pool_t *p return h2_config_create(pool, "dir", x); } -void *h2_config_merge(apr_pool_t *pool, void *basev, void *addv) +static void *h2_config_merge(apr_pool_t *pool, void *basev, void *addv) { h2_config *base = (h2_config *)basev; h2_config *add = (h2_config *)addv; h2_config *n = (h2_config *)apr_pcalloc(pool, sizeof(h2_config)); - char *name = apr_pstrcat(pool, "merged[", add->name, ", ", base->name, "]", NULL); n->name = name; @@ -128,7 +128,6 @@ void *h2_config_merge(apr_pool_t *pool, n->alt_svc_max_age = H2_CONFIG_GET(add, base, alt_svc_max_age); n->serialize_headers = H2_CONFIG_GET(add, base, serialize_headers); n->h2_direct = H2_CONFIG_GET(add, base, h2_direct); - n->session_extra_files = H2_CONFIG_GET(add, base, session_extra_files); n->modern_tls_only = H2_CONFIG_GET(add, base, modern_tls_only); n->h2_upgrade = H2_CONFIG_GET(add, base, h2_upgrade); n->tls_warmup_size = H2_CONFIG_GET(add, base, tls_warmup_size); @@ -141,10 +140,27 @@ void *h2_config_merge(apr_pool_t *pool, n->priorities = add->priorities? add->priorities : base->priorities; } n->push_diary_size = H2_CONFIG_GET(add, base, push_diary_size); - + n->copy_files = H2_CONFIG_GET(add, base, copy_files); + if (add->push_list && base->push_list) { + n->push_list = apr_array_append(pool, base->push_list, add->push_list); + } + else { + n->push_list = add->push_list? add->push_list : base->push_list; + } + n->early_hints = H2_CONFIG_GET(add, base, early_hints); return n; } +void *h2_config_merge_dir(apr_pool_t *pool, void *basev, void *addv) +{ + return h2_config_merge(pool, basev, addv); +} + +void *h2_config_merge_svr(apr_pool_t *pool, void *basev, void *addv) +{ + return h2_config_merge(pool, basev, addv); +} + int h2_config_geti(const h2_config *conf, h2_config_var_t var) { return (int)h2_config_geti64(conf, var); @@ -175,8 +191,6 @@ apr_int64_t h2_config_geti64(const h2_co return H2_CONFIG_GET(conf, &defconf, h2_upgrade); case H2_CONF_DIRECT: return H2_CONFIG_GET(conf, &defconf, h2_direct); - case H2_CONF_SESSION_FILES: - return H2_CONFIG_GET(conf, &defconf, session_extra_files); case H2_CONF_TLS_WARMUP_SIZE: return H2_CONFIG_GET(conf, &defconf, tls_warmup_size); case H2_CONF_TLS_COOLDOWN_SECS: @@ -185,6 +199,10 @@ apr_int64_t h2_config_geti64(const h2_co return H2_CONFIG_GET(conf, &defconf, h2_push); case H2_CONF_PUSH_DIARY_SIZE: return H2_CONFIG_GET(conf, &defconf, push_diary_size); + case H2_CONF_COPY_FILES: + return H2_CONFIG_GET(conf, &defconf, copy_files); + case H2_CONF_EARLY_HINTS: + return H2_CONFIG_GET(conf, &defconf, early_hints); default: return DEF_VAL; } @@ -194,7 +212,7 @@ const h2_config *h2_config_sget(server_r { h2_config *cfg = (h2_config *)ap_get_module_config(s->module_config, &http2_module); - AP_DEBUG_ASSERT(cfg); + ap_assert(cfg); return cfg; } @@ -286,7 +304,7 @@ static const char *h2_conf_set_stream_ma static const char *h2_add_alt_svc(cmd_parms *parms, void *arg, const char *value) { - if (value && strlen(value)) { + if (value && *value) { h2_config *cfg = (h2_config *)h2_config_sget(parms->server); h2_alt_svc *as = h2_alt_svc_parse(value, parms->pool); if (!as) { @@ -313,13 +331,11 @@ static const char *h2_conf_set_alt_svc_m static const char *h2_conf_set_session_extra_files(cmd_parms *parms, void *arg, const char *value) { - h2_config *cfg = (h2_config *)h2_config_sget(parms->server); - apr_int64_t max = (int)apr_atoi64(value); - if (max < 0) { - return "value must be a non-negative number"; - } - cfg->session_extra_files = (int)max; + /* deprecated, ignore */ (void)arg; + (void)value; + ap_log_perror(APLOG_MARK, APLOG_WARNING, 0, parms->pool, /* NO LOGNO */ + "H2SessionExtraFiles is obsolete and will be ignored"); return NULL; } @@ -384,7 +400,7 @@ static const char *h2_conf_add_push_prio h2_priority *priority; int weight; - if (!strlen(ctype)) { + if (!*ctype) { return "1st argument must be a mime-type, like 'text/css' or '*'"; } @@ -500,6 +516,93 @@ static const char *h2_conf_set_push_diar return NULL; } +static const char *h2_conf_set_copy_files(cmd_parms *parms, + void *arg, const char *value) +{ + h2_config *cfg = (h2_config *)arg; + if (!strcasecmp(value, "On")) { + cfg->copy_files = 1; + return NULL; + } + else if (!strcasecmp(value, "Off")) { + cfg->copy_files = 0; + return NULL; + } + + (void)arg; + return "value must be On or Off"; +} + +static void add_push(apr_pool_t *pool, h2_config *conf, h2_push_res *push) +{ + h2_push_res *new; + if (!conf->push_list) { + conf->push_list = apr_array_make(pool, 10, sizeof(*push)); + } + new = apr_array_push(conf->push_list); + new->uri_ref = push->uri_ref; + new->critical = push->critical; +} + +static const char *h2_conf_add_push_res(cmd_parms *cmd, void *dirconf, + const char *arg1, const char *arg2, + const char *arg3) +{ + h2_config *dconf = (h2_config*)dirconf ; + h2_config *sconf = (h2_config*)h2_config_sget(cmd->server); + h2_push_res push; + const char *last = arg3; + + memset(&push, 0, sizeof(push)); + if (!strcasecmp("add", arg1)) { + push.uri_ref = arg2; + } + else { + push.uri_ref = arg1; + last = arg2; + if (arg3) { + return "too many parameter"; + } + } + + if (last) { + if (!strcasecmp("critical", last)) { + push.critical = 1; + } + else { + return "unknown last parameter"; + } + } + + /* server command? set both */ + if (cmd->path == NULL) { + add_push(cmd->pool, sconf, &push); + add_push(cmd->pool, dconf, &push); + } + else { + add_push(cmd->pool, dconf, &push); + } + + return NULL; +} + +static const char *h2_conf_set_early_hints(cmd_parms *parms, + void *arg, const char *value) +{ + h2_config *cfg = (h2_config *)h2_config_sget(parms->server); + if (!strcasecmp(value, "On")) { + cfg->early_hints = 1; + return NULL; + } + else if (!strcasecmp(value, "Off")) { + cfg->early_hints = 0; + return NULL; + } + + (void)arg; + return "value must be On or Off"; +} + #define AP_END_CMD AP_INIT_TAKE1(NULL, NULL, NULL, RSRC_CONF, NULL) const command_rec h2_cmds[] = { @@ -528,7 +631,7 @@ const command_rec h2_cmds[] = { AP_INIT_TAKE1("H2Direct", h2_conf_set_direct, NULL, RSRC_CONF, "on to enable direct HTTP/2 mode"), AP_INIT_TAKE1("H2SessionExtraFiles", h2_conf_set_session_extra_files, NULL, - RSRC_CONF, "number of extra file a session might keep open"), + RSRC_CONF, "number of extra file a session might keep open (obsolete)"), AP_INIT_TAKE1("H2TLSWarmUpSize", h2_conf_set_tls_warmup_size, NULL, RSRC_CONF, "number of bytes on TLS connection before doing max writes"), AP_INIT_TAKE1("H2TLSCoolDownSecs", h2_conf_set_tls_cooldown_secs, NULL, @@ -539,6 +642,12 @@ const command_rec h2_cmds[] = { RSRC_CONF, "define priority of PUSHed resources per content type"), AP_INIT_TAKE1("H2PushDiarySize", h2_conf_set_push_diary_size, NULL, RSRC_CONF, "size of push diary"), + AP_INIT_TAKE1("H2CopyFiles", h2_conf_set_copy_files, NULL, + OR_FILEINFO, "on to perform copy of file data"), + AP_INIT_TAKE123("H2PushResource", h2_conf_add_push_res, NULL, + OR_FILEINFO, "add a resource to be pushed in this location/on this server."), + AP_INIT_TAKE1("H2EarlyHints", h2_conf_set_early_hints, NULL, + RSRC_CONF, "on to enable interim status 103 responses"), AP_END_CMD }; diff -up --new-file httpd-2.4.23/modules/http2/h2_config.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_config.h --- httpd-2.4.23/modules/http2/h2_config.h 2016-03-02 12:21:28.000000000 +0100 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_config.h 2017-03-31 21:41:01.000000000 +0200 @@ -33,17 +33,24 @@ typedef enum { H2_CONF_ALT_SVC_MAX_AGE, H2_CONF_SER_HEADERS, H2_CONF_DIRECT, - H2_CONF_SESSION_FILES, H2_CONF_MODERN_TLS_ONLY, H2_CONF_UPGRADE, H2_CONF_TLS_WARMUP_SIZE, H2_CONF_TLS_COOLDOWN_SECS, H2_CONF_PUSH, H2_CONF_PUSH_DIARY_SIZE, + H2_CONF_COPY_FILES, + H2_CONF_EARLY_HINTS, } h2_config_var_t; struct apr_hash_t; struct h2_priority; +struct h2_push_res; + +typedef struct h2_push_res { + const char *uri_ref; + int critical; +} h2_push_res; /* Apache httpd module configuration for h2. */ typedef struct h2_config { @@ -59,7 +66,6 @@ typedef struct h2_config { int serialize_headers; /* Use serialized HTTP/1.1 headers for processing, better compatibility */ int h2_direct; /* if mod_h2 is active directly */ - int session_extra_files; /* # of extra files a session may keep open */ int modern_tls_only; /* Accept only modern TLS in HTTP/2 connections */ int h2_upgrade; /* Allow HTTP/1 upgrade to h2/h2c */ apr_int64_t tls_warmup_size; /* Amount of TLS data to send before going full write size */ @@ -68,14 +74,16 @@ typedef struct h2_config { struct apr_hash_t *priorities;/* map of content-type to h2_priority records */ int push_diary_size; /* # of entries in push diary */ + int copy_files; /* if files shall be copied vs setaside on output */ + apr_array_header_t *push_list;/* list of h2_push_res configurations */ + int early_hints; /* support status code 103 */ } h2_config; void *h2_config_create_dir(apr_pool_t *pool, char *x); +void *h2_config_merge_dir(apr_pool_t *pool, void *basev, void *addv); void *h2_config_create_svr(apr_pool_t *pool, server_rec *s); -void *h2_config_merge(apr_pool_t *pool, void *basev, void *addv); - -apr_status_t h2_config_apply_header(const h2_config *config, request_rec *r); +void *h2_config_merge_svr(apr_pool_t *pool, void *basev, void *addv); extern const command_rec h2_cmds[]; diff -up --new-file httpd-2.4.23/modules/http2/h2_conn.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_conn.c --- httpd-2.4.23/modules/http2/h2_conn.c 2016-04-28 14:43:02.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_conn.c 2017-07-04 14:34:15.000000000 +0200 @@ -14,6 +14,7 @@ */ #include <assert.h> +#include <apr_strings.h> #include <ap_mpm.h> @@ -25,6 +26,8 @@ #include <http_protocol.h> #include <http_request.h> +#include <mpm_common.h> + #include "h2_private.h" #include "h2.h" #include "h2_config.h" @@ -35,7 +38,6 @@ #include "h2_stream.h" #include "h2_h2.h" #include "h2_task.h" -#include "h2_worker.h" #include "h2_workers.h" #include "h2_conn.h" #include "h2_version.h" @@ -45,6 +47,7 @@ static struct h2_workers *workers; static h2_mpm_type_t mpm_type = H2_MPM_UNKNOWN; static module *mpm_module; static int async_mpm; +static int mpm_supported = 1; static apr_socket_t *dummy_socket; static void check_modules(int force) @@ -74,11 +77,18 @@ static void check_modules(int force) else if (!strcmp("prefork.c", m->name)) { mpm_type = H2_MPM_PREFORK; mpm_module = m; + /* While http2 can work really well on prefork, it collides + * today's use case for prefork: runnning single-thread app engines + * like php. If we restrict h2_workers to 1 per process, php will + * work fine, but browser will be limited to 1 active request at a + * time. */ + mpm_supported = 0; break; } else if (!strcmp("simple_api.c", m->name)) { mpm_type = H2_MPM_SIMPLE; mpm_module = m; + mpm_supported = 0; break; } else if (!strcmp("mpm_winnt.c", m->name)) { @@ -100,12 +110,11 @@ apr_status_t h2_conn_child_init(apr_pool { const h2_config *config = h2_config_sget(s); apr_status_t status = APR_SUCCESS; - int minw, maxw, max_tx_handles, n; + int minw, maxw; int max_threads_per_child = 0; int idle_secs = 0; check_modules(1); - ap_mpm_query(AP_MPMQ_MAX_THREADS, &max_threads_per_child); status = ap_mpm_query(AP_MPMQ_IS_ASYNC, &async_mpm); @@ -123,34 +132,18 @@ apr_status_t h2_conn_child_init(apr_pool minw = max_threads_per_child; } if (maxw <= 0) { - maxw = minw; + /* As a default, this seems to work quite well under mpm_event. + * For people enabling http2 under mpm_prefork, start 4 threads unless + * configured otherwise. People get unhappy if their http2 requests are + * blocking each other. */ + maxw = H2MAX(3 * minw / 2, 4); } - /* How many file handles is it safe to use for transfer - * to the master connection to be streamed out? - * Is there a portable APR rlimit on NOFILES? Have not - * found it. And if, how many of those would we set aside? - * This leads all into a process wide handle allocation strategy - * which ultimately would limit the number of accepted connections - * with the assumption of implicitly reserving n handles for every - * connection and requiring modules with excessive needs to allocate - * from a central pool. - */ - n = h2_config_geti(config, H2_CONF_SESSION_FILES); - if (n < 0) { - max_tx_handles = maxw * 2; - } - else { - max_tx_handles = maxw * n; - } - - ap_log_error(APLOG_MARK, APLOG_TRACE3, 0, s, - "h2_workers: min=%d max=%d, mthrpchild=%d, tx_files=%d", - minw, maxw, max_threads_per_child, max_tx_handles); - workers = h2_workers_create(s, pool, minw, maxw, max_tx_handles); - idle_secs = h2_config_geti(config, H2_CONF_MAX_WORKER_IDLE_SECS); - h2_workers_set_max_idle_secs(workers, idle_secs); + ap_log_error(APLOG_MARK, APLOG_TRACE3, 0, s, + "h2_workers: min=%d max=%d, mthrpchild=%d, idle_secs=%d", + minw, maxw, max_threads_per_child, idle_secs); + workers = h2_workers_create(s, pool, minw, maxw, idle_secs); ap_register_input_filter("H2_IN", h2_filter_core_input, NULL, AP_FTYPE_CONNECTION); @@ -171,6 +164,18 @@ h2_mpm_type_t h2_conn_mpm_type(void) return mpm_type; } +const char *h2_conn_mpm_name(void) +{ + check_modules(0); + return mpm_module? mpm_module->name : "unknown"; +} + +int h2_mpm_supported(void) +{ + check_modules(0); + return mpm_supported; +} + static module *h2_conn_mpm_module(void) { check_modules(0); @@ -180,6 +185,7 @@ static module *h2_conn_mpm_module(void) apr_status_t h2_conn_setup(h2_ctx *ctx, conn_rec *c, request_rec *r) { h2_session *session; + apr_status_t status; if (!workers) { ap_log_cerror(APLOG_MARK, APLOG_ERR, 0, c, APLOGNO(02911) @@ -188,31 +194,37 @@ apr_status_t h2_conn_setup(h2_ctx *ctx, } if (r) { - session = h2_session_rcreate(r, ctx, workers); + status = h2_session_rcreate(&session, r, ctx, workers); } else { - session = h2_session_create(c, ctx, workers); + status = h2_session_create(&session, c, ctx, workers); } - h2_ctx_session_set(ctx, session); - - return APR_SUCCESS; + if (status == APR_SUCCESS) { + h2_ctx_session_set(ctx, session); + } + return status; } apr_status_t h2_conn_run(struct h2_ctx *ctx, conn_rec *c) { apr_status_t status; int mpm_state = 0; + h2_session *session = h2_ctx_session_get(ctx); + ap_assert(session); do { if (c->cs) { c->cs->sense = CONN_SENSE_DEFAULT; + c->cs->state = CONN_STATE_HANDLER; } - status = h2_session_process(h2_ctx_session_get(ctx), async_mpm); + + status = h2_session_process(session, async_mpm); if (APR_STATUS_IS_EOF(status)) { - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, c, APLOGNO(03045) - "h2_session(%ld): process, closing conn", c->id); + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, c, + H2_SSSN_LOG(APLOGNO(03045), session, + "process, closing conn")); c->keepalive = AP_CONN_CLOSE; } else { @@ -226,53 +238,78 @@ apr_status_t h2_conn_run(struct h2_ctx * && c->keepalive == AP_CONN_KEEPALIVE && mpm_state != AP_MPMQ_STOPPING); + if (c->cs) { + switch (session->state) { + case H2_SESSION_ST_INIT: + case H2_SESSION_ST_CLEANUP: + case H2_SESSION_ST_DONE: + case H2_SESSION_ST_IDLE: + c->cs->state = CONN_STATE_WRITE_COMPLETION; + break; + case H2_SESSION_ST_BUSY: + case H2_SESSION_ST_WAIT: + default: + c->cs->state = CONN_STATE_HANDLER; + break; + + } + } + return DONE; } apr_status_t h2_conn_pre_close(struct h2_ctx *ctx, conn_rec *c) { - apr_status_t status; - - status = h2_session_pre_close(h2_ctx_session_get(ctx), async_mpm); - if (status == APR_SUCCESS) { - return DONE; /* This is the same, right? */ + h2_session *session = h2_ctx_session_get(ctx); + if (session) { + apr_status_t status = h2_session_pre_close(session, async_mpm); + return (status == APR_SUCCESS)? DONE : status; } - return status; + return DONE; } -conn_rec *h2_slave_create(conn_rec *master, apr_pool_t *parent, - apr_allocator_t *allocator) +conn_rec *h2_slave_create(conn_rec *master, int slave_id, apr_pool_t *parent) { + apr_allocator_t *allocator; + apr_status_t status; apr_pool_t *pool; conn_rec *c; void *cfg; + module *mpm; - AP_DEBUG_ASSERT(master); + ap_assert(master); ap_log_cerror(APLOG_MARK, APLOG_TRACE3, 0, master, - "h2_conn(%ld): create slave", master->id); + "h2_stream(%ld-%d): create slave", master->id, slave_id); /* We create a pool with its own allocator to be used for * processing a request. This is the only way to have the processing * independant of its parent pool in the sense that it can work in - * another thread. + * another thread. Also, the new allocator needs its own mutex to + * synchronize sub-pools. */ - if (!allocator) { - apr_allocator_create(&allocator); + apr_allocator_create(&allocator); + apr_allocator_max_free_set(allocator, ap_max_mem_free); + status = apr_pool_create_ex(&pool, parent, NULL, allocator); + if (status != APR_SUCCESS) { + ap_log_cerror(APLOG_MARK, APLOG_ERR, status, master, + APLOGNO(10004) "h2_session(%ld-%d): create slave pool", + master->id, slave_id); + return NULL; } - apr_pool_create_ex(&pool, parent, NULL, allocator); - apr_pool_tag(pool, "h2_slave_conn"); apr_allocator_owner_set(allocator, pool); - + apr_pool_tag(pool, "h2_slave_conn"); + c = (conn_rec *) apr_palloc(pool, sizeof(conn_rec)); if (c == NULL) { ap_log_cerror(APLOG_MARK, APLOG_ERR, APR_ENOMEM, master, - APLOGNO(02913) "h2_task: creating conn"); + APLOGNO(02913) "h2_session(%ld-%d): create slave", + master->id, slave_id); + apr_pool_destroy(pool); return NULL; } memcpy(c, master, sizeof(conn_rec)); - - /* Replace these */ + c->master = master; c->pool = pool; c->conn_config = ap_create_conn_config(pool); @@ -282,11 +319,15 @@ conn_rec *h2_slave_create(conn_rec *mast c->bucket_alloc = apr_bucket_alloc_create(pool); c->data_in_input_filters = 0; c->data_in_output_filters = 0; + /* prevent mpm_event from making wrong assumptions about this connection, + * like e.g. using its socket for an async read check. */ c->clogging_input_filters = 1; c->log = NULL; - c->log_id = NULL; + c->log_id = apr_psprintf(pool, "%ld-%d", + master->id, slave_id); /* Simulate that we had already a request on this connection. */ c->keepalives = 1; + c->aborted = 0; /* We cannot install the master connection socket on the slaves, as * modules mess with timeouts/blocking of the socket, with * unwanted side effects to the master connection processing. @@ -299,29 +340,22 @@ conn_rec *h2_slave_create(conn_rec *mast /* TODO: not all mpm modules have learned about slave connections yet. * copy their config from master to slave. */ - if (h2_conn_mpm_module()) { - cfg = ap_get_module_config(master->conn_config, h2_conn_mpm_module()); - ap_set_module_config(c->conn_config, h2_conn_mpm_module(), cfg); + if ((mpm = h2_conn_mpm_module()) != NULL) { + cfg = ap_get_module_config(master->conn_config, mpm); + ap_set_module_config(c->conn_config, mpm, cfg); } + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, c, + "h2_stream(%ld-%d): created slave", master->id, slave_id); return c; } -void h2_slave_destroy(conn_rec *slave, apr_allocator_t **pallocator) +void h2_slave_destroy(conn_rec *slave) { - apr_pool_t *parent; - apr_allocator_t *allocator = apr_pool_allocator_get(slave->pool); ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, slave, - "h2_slave_conn(%ld): destroy (task=%s)", slave->id, + "h2_stream(%s): destroy slave", apr_table_get(slave->notes, H2_TASK_ID_NOTE)); - /* Attache the allocator to the parent pool and return it for - * reuse, otherwise the own is still the slave pool and it will - * get destroyed with it. */ - parent = apr_pool_parent_get(slave->pool); - if (pallocator && parent) { - apr_allocator_owner_set(allocator, parent); - *pallocator = allocator; - } + slave->sbh = NULL; apr_pool_destroy(slave->pool); } diff -up --new-file httpd-2.4.23/modules/http2/h2_conn.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_conn.h --- httpd-2.4.23/modules/http2/h2_conn.h 2016-03-17 17:54:05.000000000 +0100 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_conn.h 2017-07-04 14:34:15.000000000 +0200 @@ -31,7 +31,7 @@ apr_status_t h2_conn_setup(struct h2_ctx /** * Run the HTTP/2 connection in synchronous fashion. * Return when the HTTP/2 session is done - * and the connection will close or a fatal error occured. + * and the connection will close or a fatal error occurred. * * @param ctx the http2 context to run * @return APR_SUCCESS when session is done. @@ -64,11 +64,11 @@ typedef enum { /* Returns the type of MPM module detected */ h2_mpm_type_t h2_conn_mpm_type(void); +const char *h2_conn_mpm_name(void); +int h2_mpm_supported(void); - -conn_rec *h2_slave_create(conn_rec *master, apr_pool_t *parent, - apr_allocator_t *allocator); -void h2_slave_destroy(conn_rec *slave, apr_allocator_t **pallocator); +conn_rec *h2_slave_create(conn_rec *master, int slave_id, apr_pool_t *parent); +void h2_slave_destroy(conn_rec *slave); apr_status_t h2_slave_run_pre_connection(conn_rec *slave, apr_socket_t *csd); void h2_slave_run_connection(conn_rec *slave); diff -up --new-file httpd-2.4.23/modules/http2/h2_conn_io.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_conn_io.c --- httpd-2.4.23/modules/http2/h2_conn_io.c 2016-06-22 15:30:24.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_conn_io.c 2017-02-22 11:07:46.000000000 +0100 @@ -24,7 +24,6 @@ #include <http_request.h> #include "h2_private.h" -#include "h2_bucket_eoc.h" #include "h2_bucket_eos.h" #include "h2_config.h" #include "h2_conn_io.h" @@ -39,6 +38,7 @@ * - TLS overhead (60-100) * ~= 1300 bytes */ #define WRITE_SIZE_INITIAL 1300 + /* Calculated like this: max TLS record size 16*1024 * - 40 (IP) - 20 (TCP) - 40 (TCP options) * - TLS overhead (60-100) @@ -72,9 +72,6 @@ static void h2_conn_io_bb_log(conn_rec * else if (AP_BUCKET_IS_EOR(b)) { off += apr_snprintf(buffer+off, bmax-off, "eor "); } - else if (H2_BUCKET_IS_H2EOC(b)) { - off += apr_snprintf(buffer+off, bmax-off, "h2eoc "); - } else if (H2_BUCKET_IS_H2EOS(b)) { off += apr_snprintf(buffer+off, bmax-off, "h2eos "); } @@ -120,20 +117,20 @@ static void h2_conn_io_bb_log(conn_rec * line = *buffer? buffer : "(empty)"; } /* Intentional no APLOGNO */ - ap_log_cerror(APLOG_MARK, level, 0, c, "bb_dump(%ld-%d)-%s: %s", - c->id, stream_id, tag, line); + ap_log_cerror(APLOG_MARK, level, 0, c, "h2_session(%ld)-%s: %s", + c->id, tag, line); } apr_status_t h2_conn_io_init(h2_conn_io *io, conn_rec *c, const h2_config *cfg) { - io->c = c; - io->output = apr_brigade_create(c->pool, c->bucket_alloc); - io->is_tls = h2_h2_is_tls(c); - io->buffer_output = io->is_tls; - io->pass_threshold = h2_config_geti64(cfg, H2_CONF_STREAM_MAX_MEM) / 2; - + io->c = c; + io->output = apr_brigade_create(c->pool, c->bucket_alloc); + io->is_tls = h2_h2_is_tls(c); + io->buffer_output = io->is_tls; + io->flush_threshold = (apr_size_t)h2_config_geti64(cfg, H2_CONF_STREAM_MAX_MEM); + if (io->is_tls) { /* This is what we start with, * see https://issues.apache.org/jira/browse/TS-2503 @@ -161,8 +158,6 @@ apr_status_t h2_conn_io_init(h2_conn_io return APR_SUCCESS; } -#define LOG_SCRATCH 0 - static void append_scratch(h2_conn_io *io) { if (io->scratch && io->slen > 0) { @@ -170,11 +165,6 @@ static void append_scratch(h2_conn_io *i apr_bucket_free, io->c->bucket_alloc); APR_BRIGADE_INSERT_TAIL(io->output, b); -#if LOG_SCRATCH - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, io->c, APLOGNO(03386) - "h2_conn_io(%ld): append_scratch(%ld)", - io->c->id, (long)io->slen); -#endif io->scratch = NULL; io->slen = io->ssize = 0; } @@ -206,7 +196,7 @@ static apr_status_t read_to_scratch(h2_c return APR_SUCCESS; } - AP_DEBUG_ASSERT(b->length <= (io->ssize - io->slen)); + ap_assert(b->length <= (io->ssize - io->slen)); if (APR_BUCKET_IS_FILE(b)) { apr_bucket_file *f = (apr_bucket_file *)b->data; apr_file_t *fd = f->fd; @@ -222,11 +212,6 @@ static apr_status_t read_to_scratch(h2_c return status; } status = apr_file_read(fd, io->scratch + io->slen, &len); -#if LOG_SCRATCH - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, io->c, APLOGNO(03387) - "h2_conn_io(%ld): FILE_to_scratch(%ld)", - io->c->id, (long)len); -#endif if (status != APR_SUCCESS && status != APR_EOF) { return status; } @@ -235,11 +220,6 @@ static apr_status_t read_to_scratch(h2_c else { status = apr_bucket_read(b, &data, &len, APR_BLOCK_READ); if (status == APR_SUCCESS) { -#if LOG_SCRATCH - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, io->c, APLOGNO(03388) - "h2_conn_io(%ld): read_to_scratch(%ld)", - io->c->id, (long)b->length); -#endif memcpy(io->scratch+io->slen, data, len); io->slen += len; } @@ -255,54 +235,46 @@ static void check_write_size(h2_conn_io /* long time not written, reset write size */ io->write_size = WRITE_SIZE_INITIAL; io->bytes_written = 0; - ap_log_cerror(APLOG_MARK, APLOG_TRACE4, 0, io->c, - "h2_conn_io(%ld): timeout write size reset to %ld", - (long)io->c->id, (long)io->write_size); } else if (io->write_size < WRITE_SIZE_MAX && io->bytes_written >= io->warmup_size) { /* connection is hot, use max size */ io->write_size = WRITE_SIZE_MAX; - ap_log_cerror(APLOG_MARK, APLOG_TRACE4, 0, io->c, - "h2_conn_io(%ld): threshold reached, write size now %ld", - (long)io->c->id, (long)io->write_size); } } -static apr_status_t pass_output(h2_conn_io *io, int flush, int eoc) +static apr_status_t pass_output(h2_conn_io *io, int flush) { conn_rec *c = io->c; + apr_bucket_brigade *bb = io->output; apr_bucket *b; apr_off_t bblen; apr_status_t status; append_scratch(io); - if (flush) { + if (flush && !io->is_flushed) { b = apr_bucket_flush_create(c->bucket_alloc); - APR_BRIGADE_INSERT_TAIL(io->output, b); + APR_BRIGADE_INSERT_TAIL(bb, b); } - if (APR_BRIGADE_EMPTY(io->output)) { + if (APR_BRIGADE_EMPTY(bb)) { return APR_SUCCESS; } - ap_log_cerror(APLOG_MARK, APLOG_TRACE4, 0, c, "h2_conn_io: pass_output"); ap_update_child_status(c->sbh, SERVER_BUSY_WRITE, NULL); - apr_brigade_length(io->output, 0, &bblen); + apr_brigade_length(bb, 0, &bblen); + h2_conn_io_bb_log(c, 0, APLOG_TRACE2, "out", bb); - h2_conn_io_bb_log(c, 0, APLOG_TRACE2, "master conn pass", io->output); - status = ap_pass_brigade(c->output_filters, io->output); - - /* careful with access after this, as we might have flushed an EOC bucket - * that de-allocated us all. */ - if (!eoc) { - apr_brigade_cleanup(io->output); - if (status == APR_SUCCESS) { - io->bytes_written += (apr_size_t)bblen; - io->last_write = apr_time_now(); + status = ap_pass_brigade(c->output_filters, bb); + if (status == APR_SUCCESS) { + io->bytes_written += (apr_size_t)bblen; + io->last_write = apr_time_now(); + if (flush) { + io->is_flushed = 1; } } - + apr_brigade_cleanup(bb); + if (status != APR_SUCCESS) { ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, c, APLOGNO(03044) "h2_conn_io(%ld): pass_out brigade %ld bytes", @@ -311,16 +283,27 @@ static apr_status_t pass_output(h2_conn_ return status; } -apr_status_t h2_conn_io_flush(h2_conn_io *io) +int h2_conn_io_needs_flush(h2_conn_io *io) { - return pass_output(io, 1, 0); + if (!io->is_flushed) { + apr_off_t len = h2_brigade_mem_size(io->output); + if (len > io->flush_threshold) { + return 1; + } + /* if we do not exceed flush length due to memory limits, + * we want at least flush when we have that amount of data. */ + apr_brigade_length(io->output, 0, &len); + return len > (4 * io->flush_threshold); + } + return 0; } -apr_status_t h2_conn_io_write_eoc(h2_conn_io *io, h2_session *session) +apr_status_t h2_conn_io_flush(h2_conn_io *io) { - apr_bucket *b = h2_bucket_eoc_create(io->c->bucket_alloc, session); - APR_BRIGADE_INSERT_TAIL(io->output, b); - return pass_output(io, 1, 1); + apr_status_t status; + status = pass_output(io, 1); + check_write_size(io); + return status; } apr_status_t h2_conn_io_write(h2_conn_io *io, const char *data, size_t length) @@ -328,25 +311,19 @@ apr_status_t h2_conn_io_write(h2_conn_io apr_status_t status = APR_SUCCESS; apr_size_t remain; + if (length > 0) { + io->is_flushed = 0; + } + if (io->buffer_output) { while (length > 0) { remain = assure_scratch_space(io); if (remain >= length) { -#if LOG_SCRATCH - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, io->c, APLOGNO(03389) - "h2_conn_io(%ld): write_to_scratch(%ld)", - io->c->id, (long)length); -#endif memcpy(io->scratch + io->slen, data, length); io->slen += length; length = 0; } else { -#if LOG_SCRATCH - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, io->c, APLOGNO(03390) - "h2_conn_io(%ld): write_to_scratch(%ld)", - io->c->id, (long)remain); -#endif memcpy(io->scratch + io->slen, data, remain); io->slen += remain; data += remain; @@ -365,7 +342,10 @@ apr_status_t h2_conn_io_pass(h2_conn_io apr_bucket *b; apr_status_t status = APR_SUCCESS; - check_write_size(io); + if (!APR_BRIGADE_EMPTY(bb)) { + io->is_flushed = 0; + } + while (!APR_BRIGADE_EMPTY(bb) && status == APR_SUCCESS) { b = APR_BRIGADE_FIRST(bb); @@ -384,11 +364,6 @@ apr_status_t h2_conn_io_pass(h2_conn_io /* complete write_size bucket, append unchanged */ APR_BUCKET_REMOVE(b); APR_BRIGADE_INSERT_TAIL(io->output, b); -#if LOG_SCRATCH - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, io->c, APLOGNO(03391) - "h2_conn_io(%ld): pass bucket(%ld)", - io->c->id, (long)b->length); -#endif continue; } } @@ -408,15 +383,6 @@ apr_status_t h2_conn_io_pass(h2_conn_io APR_BRIGADE_INSERT_TAIL(io->output, b); } } - - if (status == APR_SUCCESS) { - if (!APR_BRIGADE_EMPTY(io->output)) { - apr_off_t len = h2_brigade_mem_size(io->output); - if (len >= io->pass_threshold) { - return pass_output(io, 0, 0); - } - } - } return status; } diff -up --new-file httpd-2.4.23/modules/http2/h2_conn_io.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_conn_io.h --- httpd-2.4.23/modules/http2/h2_conn_io.h 2016-05-04 15:58:02.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_conn_io.h 2017-01-21 16:48:17.000000000 +0100 @@ -39,7 +39,8 @@ typedef struct { apr_int64_t bytes_written; int buffer_output; - apr_size_t pass_threshold; + apr_size_t flush_threshold; + unsigned int is_flushed : 1; char *scratch; apr_size_t ssize; @@ -61,16 +62,15 @@ apr_status_t h2_conn_io_write(h2_conn_io apr_status_t h2_conn_io_pass(h2_conn_io *io, apr_bucket_brigade *bb); /** - * Append an End-Of-Connection bucket to the output that, once destroyed, - * will tear down the complete http2 session. - */ -apr_status_t h2_conn_io_write_eoc(h2_conn_io *io, struct h2_session *session); - -/** * Pass any buffered data on to the connection output filters. * @param io the connection io * @param flush if a flush bucket should be appended to any output */ apr_status_t h2_conn_io_flush(h2_conn_io *io); +/** + * Check if the buffered amount of data needs flushing. + */ +int h2_conn_io_needs_flush(h2_conn_io *io); + #endif /* defined(__mod_h2__h2_conn_io__) */ diff -up --new-file httpd-2.4.23/modules/http2/h2_ctx.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_ctx.c --- httpd-2.4.23/modules/http2/h2_ctx.c 2016-05-04 15:58:02.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_ctx.c 2016-10-27 18:53:58.000000000 +0200 @@ -27,7 +27,7 @@ static h2_ctx *h2_ctx_create(const conn_rec *c) { h2_ctx *ctx = apr_pcalloc(c->pool, sizeof(h2_ctx)); - AP_DEBUG_ASSERT(ctx); + ap_assert(ctx); ap_set_module_config(c->conn_config, &http2_module, ctx); h2_ctx_server_set(ctx, c->base_server); return ctx; @@ -35,7 +35,7 @@ static h2_ctx *h2_ctx_create(const conn_ void h2_ctx_clear(const conn_rec *c) { - AP_DEBUG_ASSERT(c); + ap_assert(c); ap_set_module_config(c->conn_config, &http2_module, NULL); } diff -up --new-file httpd-2.4.23/modules/http2/h2_filter.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_filter.c --- httpd-2.4.23/modules/http2/h2_filter.c 2016-05-23 12:55:29.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_filter.c 2017-04-10 17:04:55.000000000 +0200 @@ -15,14 +15,17 @@ #include <assert.h> +#include <apr_strings.h> #include <httpd.h> #include <http_core.h> +#include <http_protocol.h> #include <http_log.h> #include <http_connection.h> #include <scoreboard.h> #include "h2_private.h" #include "h2.h" +#include "h2_config.h" #include "h2_conn_io.h" #include "h2_ctx.h" #include "h2_mplx.h" @@ -30,7 +33,8 @@ #include "h2_task.h" #include "h2_stream.h" #include "h2_request.h" -#include "h2_response.h" +#include "h2_headers.h" +#include "h2_stream.h" #include "h2_session.h" #include "h2_util.h" #include "h2_version.h" @@ -40,55 +44,80 @@ #define UNSET -1 #define H2MIN(x,y) ((x) < (y) ? (x) : (y)) -static apr_status_t consume_brigade(h2_filter_cin *cin, - apr_bucket_brigade *bb, - apr_read_type_e block) +static apr_status_t recv_RAW_DATA(conn_rec *c, h2_filter_cin *cin, + apr_bucket *b, apr_read_type_e block) { + h2_session *session = cin->session; apr_status_t status = APR_SUCCESS; - apr_size_t readlen = 0; + apr_size_t len; + const char *data; + ssize_t n; - while (status == APR_SUCCESS && !APR_BRIGADE_EMPTY(bb)) { + status = apr_bucket_read(b, &data, &len, block); + + while (status == APR_SUCCESS && len > 0) { + n = nghttp2_session_mem_recv(session->ngh2, (const uint8_t *)data, len); - apr_bucket* bucket = APR_BRIGADE_FIRST(bb); - if (APR_BUCKET_IS_METADATA(bucket)) { - /* we do nothing regarding any meta here */ + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, session->c, + H2_SSSN_MSG(session, "fed %ld bytes to nghttp2, %ld read"), + (long)len, (long)n); + if (n < 0) { + if (nghttp2_is_fatal((int)n)) { + h2_session_event(session, H2_SESSION_EV_PROTO_ERROR, + (int)n, nghttp2_strerror((int)n)); + status = APR_EGENERAL; + } } else { - const char *bucket_data = NULL; - apr_size_t bucket_length = 0; - status = apr_bucket_read(bucket, &bucket_data, - &bucket_length, block); - - if (status == APR_SUCCESS && bucket_length > 0) { - apr_size_t consumed = 0; - - status = cin->cb(cin->cb_ctx, bucket_data, bucket_length, &consumed); - if (status == APR_SUCCESS && bucket_length > consumed) { - /* We have data left in the bucket. Split it. */ - status = apr_bucket_split(bucket, consumed); - } - readlen += consumed; - cin->start_read = apr_time_now(); + session->io.bytes_read += n; + if (len <= n) { + break; } + len -= n; + data += n; + } + } + + return status; +} + +static apr_status_t recv_RAW_brigade(conn_rec *c, h2_filter_cin *cin, + apr_bucket_brigade *bb, + apr_read_type_e block) +{ + apr_status_t status = APR_SUCCESS; + apr_bucket* b; + int consumed = 0; + + h2_util_bb_log(c, c->id, APLOG_TRACE2, "RAW_in", bb); + while (status == APR_SUCCESS && !APR_BRIGADE_EMPTY(bb)) { + b = APR_BRIGADE_FIRST(bb); + + if (APR_BUCKET_IS_METADATA(b)) { + /* nop */ + } + else { + status = recv_RAW_DATA(c, cin, b, block); } - apr_bucket_delete(bucket); + consumed = 1; + apr_bucket_delete(b); } - if (readlen == 0 && status == APR_SUCCESS && block == APR_NONBLOCK_READ) { + if (!consumed && status == APR_SUCCESS && block == APR_NONBLOCK_READ) { return APR_EAGAIN; } return status; } -h2_filter_cin *h2_filter_cin_create(apr_pool_t *p, h2_filter_cin_cb *cb, void *ctx) +h2_filter_cin *h2_filter_cin_create(h2_session *session) { h2_filter_cin *cin; - cin = apr_pcalloc(p, sizeof(*cin)); - cin->pool = p; - cin->cb = cb; - cin->cb_ctx = ctx; - cin->start_read = UNSET; + cin = apr_pcalloc(session->pool, sizeof(*cin)); + if (!cin) { + return NULL; + } + cin->session = session; return cin; } @@ -106,11 +135,14 @@ apr_status_t h2_filter_core_input(ap_fil h2_filter_cin *cin = f->ctx; apr_status_t status = APR_SUCCESS; apr_interval_time_t saved_timeout = UNSET; + const int trace1 = APLOGctrace1(f->c); - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, f->c, - "core_input(%ld): read, %s, mode=%d, readbytes=%ld", - (long)f->c->id, (block == APR_BLOCK_READ)? "BLOCK_READ" : "NONBLOCK_READ", - mode, (long)readbytes); + if (trace1) { + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, f->c, + "h2_session(%ld): read, %s, mode=%d, readbytes=%ld", + (long)f->c->id, (block == APR_BLOCK_READ)? + "BLOCK_READ" : "NONBLOCK_READ", mode, (long)readbytes); + } if (mode == AP_MODE_INIT || mode == AP_MODE_SPECULATIVE) { return ap_get_brigade(f->next, brigade, mode, block, readbytes); @@ -121,20 +153,16 @@ apr_status_t h2_filter_core_input(ap_fil } if (!cin->bb) { - cin->bb = apr_brigade_create(cin->pool, f->c->bucket_alloc); + cin->bb = apr_brigade_create(cin->session->pool, f->c->bucket_alloc); } if (!cin->socket) { cin->socket = ap_get_conn_socket(f->c); } - cin->start_read = apr_time_now(); if (APR_BRIGADE_EMPTY(cin->bb)) { /* We only do a blocking read when we have no streams to process. So, * in httpd scoreboard lingo, we are in a KEEPALIVE connection state. - * When reading non-blocking, we do have streams to process and update - * child with NULL request. That way, any current request information - * in the scoreboard is preserved. */ if (block == APR_BLOCK_READ) { if (cin->timeout > 0) { @@ -151,17 +179,19 @@ apr_status_t h2_filter_core_input(ap_fil switch (status) { case APR_SUCCESS: - status = consume_brigade(cin, cin->bb, block); + status = recv_RAW_brigade(f->c, cin, cin->bb, block); break; case APR_EOF: case APR_EAGAIN: case APR_TIMEUP: - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, f->c, - "core_input(%ld): read", (long)f->c->id); + if (trace1) { + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, f->c, + "h2_session(%ld): read", f->c->id); + } break; default: ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, f->c, APLOGNO(03046) - "h2_conn_io: error reading"); + "h2_session(%ld): error reading", f->c->id); break; } return status; @@ -171,30 +201,92 @@ apr_status_t h2_filter_core_input(ap_fil * http2 connection status handler + stream out source ******************************************************************************/ -static const char *H2_SOS_H2_STATUS = "http2-status"; +typedef struct { + apr_bucket_refcount refcount; + h2_bucket_event_cb *cb; + void *ctx; +} h2_bucket_observer; + +static apr_status_t bucket_read(apr_bucket *b, const char **str, + apr_size_t *len, apr_read_type_e block) +{ + (void)b; + (void)block; + *str = NULL; + *len = 0; + return APR_SUCCESS; +} -int h2_filter_h2_status_handler(request_rec *r) +static void bucket_destroy(void *data) { - h2_ctx *ctx = h2_ctx_rget(r); - h2_task *task; - - if (strcmp(r->handler, "http2-status")) { - return DECLINED; + h2_bucket_observer *h = data; + if (apr_bucket_shared_destroy(h)) { + if (h->cb) { + h->cb(h->ctx, H2_BUCKET_EV_BEFORE_DESTROY, NULL); + } + apr_bucket_free(h); } - if (r->method_number != M_GET) { - return DECLINED; +} + +apr_bucket * h2_bucket_observer_make(apr_bucket *b, h2_bucket_event_cb *cb, + void *ctx) +{ + h2_bucket_observer *br; + + br = apr_bucket_alloc(sizeof(*br), b->list); + br->cb = cb; + br->ctx = ctx; + + b = apr_bucket_shared_make(b, br, 0, 0); + b->type = &h2_bucket_type_observer; + return b; +} + +apr_bucket * h2_bucket_observer_create(apr_bucket_alloc_t *list, + h2_bucket_event_cb *cb, void *ctx) +{ + apr_bucket *b = apr_bucket_alloc(sizeof(*b), list); + + APR_BUCKET_INIT(b); + b->free = apr_bucket_free; + b->list = list; + b = h2_bucket_observer_make(b, cb, ctx); + return b; +} + +apr_status_t h2_bucket_observer_fire(apr_bucket *b, h2_bucket_event event) +{ + if (H2_BUCKET_IS_OBSERVER(b)) { + h2_bucket_observer *l = (h2_bucket_observer *)b->data; + return l->cb(l->ctx, event, b); } + return APR_EINVAL; +} - task = ctx? h2_ctx_get_task(ctx) : NULL; - if (task) { - /* We need to handle the actual output on the main thread, as - * we need to access h2_session information. */ - apr_table_setn(r->notes, H2_RESP_SOS_NOTE, H2_SOS_H2_STATUS); - apr_table_setn(r->headers_out, "Content-Type", "application/json"); - r->status = 200; - return DONE; +const apr_bucket_type_t h2_bucket_type_observer = { + "H2OBS", 5, APR_BUCKET_METADATA, + bucket_destroy, + bucket_read, + apr_bucket_setaside_noop, + apr_bucket_split_notimpl, + apr_bucket_shared_copy +}; + +apr_bucket *h2_bucket_observer_beam(struct h2_bucket_beam *beam, + apr_bucket_brigade *dest, + const apr_bucket *src) +{ + if (H2_BUCKET_IS_OBSERVER(src)) { + h2_bucket_observer *l = (h2_bucket_observer *)src->data; + apr_bucket *b = h2_bucket_observer_create(dest->bucket_alloc, + l->cb, l->ctx); + APR_BRIGADE_INSERT_TAIL(dest, b); + l->cb = NULL; + l->ctx = NULL; + h2_bucket_observer_fire(b, H2_BUCKET_EV_BEFORE_MASTER_SEND); + return b; } - return DECLINED; + return NULL; } static apr_status_t bbout(apr_bucket_brigade *bb, const char *fmt, ...) @@ -209,82 +301,260 @@ static apr_status_t bbout(apr_bucket_bri return rv; } -static apr_status_t h2_status_stream_filter(h2_stream *stream) +static void add_settings(apr_bucket_brigade *bb, h2_session *s, int last) { - h2_session *session = stream->session; - h2_mplx *mplx = session->mplx; - conn_rec *c = session->c; - h2_push_diary *diary; - apr_bucket_brigade *bb; - apr_status_t status; + h2_mplx *m = s->mplx; - if (!stream->response) { - return APR_EINVAL; - } - - if (!stream->buffer) { - stream->buffer = apr_brigade_create(stream->pool, c->bucket_alloc); - } - bb = stream->buffer; + bbout(bb, " \"settings\": {\n"); + bbout(bb, " \"SETTINGS_MAX_CONCURRENT_STREAMS\": %d,\n", m->max_streams); + bbout(bb, " \"SETTINGS_MAX_FRAME_SIZE\": %d,\n", 16*1024); + bbout(bb, " \"SETTINGS_INITIAL_WINDOW_SIZE\": %d,\n", + h2_config_geti(s->config, H2_CONF_WIN_SIZE)); + bbout(bb, " \"SETTINGS_ENABLE_PUSH\": %d\n", h2_session_push_enabled(s)); + bbout(bb, " }%s\n", last? "" : ","); +} + +static void add_peer_settings(apr_bucket_brigade *bb, h2_session *s, int last) +{ + bbout(bb, " \"peerSettings\": {\n"); + bbout(bb, " \"SETTINGS_MAX_CONCURRENT_STREAMS\": %d,\n", + nghttp2_session_get_remote_settings(s->ngh2, NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS)); + bbout(bb, " \"SETTINGS_MAX_FRAME_SIZE\": %d,\n", + nghttp2_session_get_remote_settings(s->ngh2, NGHTTP2_SETTINGS_MAX_FRAME_SIZE)); + bbout(bb, " \"SETTINGS_INITIAL_WINDOW_SIZE\": %d,\n", + nghttp2_session_get_remote_settings(s->ngh2, NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE)); + bbout(bb, " \"SETTINGS_ENABLE_PUSH\": %d,\n", + nghttp2_session_get_remote_settings(s->ngh2, NGHTTP2_SETTINGS_ENABLE_PUSH)); + bbout(bb, " \"SETTINGS_HEADER_TABLE_SIZE\": %d,\n", + nghttp2_session_get_remote_settings(s->ngh2, NGHTTP2_SETTINGS_HEADER_TABLE_SIZE)); + bbout(bb, " \"SETTINGS_MAX_HEADER_LIST_SIZE\": %d\n", + nghttp2_session_get_remote_settings(s->ngh2, NGHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE)); + bbout(bb, " }%s\n", last? "" : ","); +} + +typedef struct { + apr_bucket_brigade *bb; + h2_session *s; + int idx; +} stream_ctx_t; + +static int add_stream(h2_stream *stream, void *ctx) +{ + stream_ctx_t *x = ctx; + int32_t flowIn, flowOut; - apr_table_unset(stream->response->headers, "Content-Length"); - stream->response->content_length = -1; + flowIn = nghttp2_session_get_stream_effective_local_window_size(x->s->ngh2, stream->id); + flowOut = nghttp2_session_get_stream_remote_window_size(x->s->ngh2, stream->id); + bbout(x->bb, "%s\n \"%d\": {\n", (x->idx? "," : ""), stream->id); + bbout(x->bb, " \"state\": \"%s\",\n", h2_stream_state_str(stream)); + bbout(x->bb, " \"created\": %f,\n", ((double)stream->created)/APR_USEC_PER_SEC); + bbout(x->bb, " \"flowIn\": %d,\n", flowIn); + bbout(x->bb, " \"flowOut\": %d,\n", flowOut); + bbout(x->bb, " \"dataIn\": %"APR_UINT64_T_FMT",\n", stream->in_data_octets); + bbout(x->bb, " \"dataOut\": %"APR_UINT64_T_FMT"\n", stream->out_data_octets); + bbout(x->bb, " }"); + + ++x->idx; + return 1; +} + +static void add_streams(apr_bucket_brigade *bb, h2_session *s, int last) +{ + stream_ctx_t x; - bbout(bb, "{\n"); - bbout(bb, " \"HTTP2\": \"on\",\n"); - bbout(bb, " \"H2PUSH\": \"%s\",\n", h2_session_push_enabled(session)? "on" : "off"); - bbout(bb, " \"mod_http2_version\": \"%s\",\n", MOD_HTTP2_VERSION); - bbout(bb, " \"session_id\": %ld,\n", (long)session->id); - bbout(bb, " \"streams_max\": %d,\n", (int)session->max_stream_count); - bbout(bb, " \"this_stream\": %d,\n", stream->id); - bbout(bb, " \"streams_open\": %d,\n", (int)h2_ihash_count(session->streams)); - bbout(bb, " \"max_stream_started\": %d,\n", mplx->max_stream_started); - bbout(bb, " \"requests_received\": %d,\n", session->remote.emitted_count); - bbout(bb, " \"responses_submitted\": %d,\n", session->responses_submitted); - bbout(bb, " \"streams_reset\": %d, \n", session->streams_reset); - bbout(bb, " \"pushes_promised\": %d,\n", session->pushes_promised); - bbout(bb, " \"pushes_submitted\": %d,\n", session->pushes_submitted); - bbout(bb, " \"pushes_reset\": %d,\n", session->pushes_reset); + x.bb = bb; + x.s = s; + x.idx = 0; + bbout(bb, " \"streams\": {"); + h2_mplx_stream_do(s->mplx, add_stream, &x); + bbout(bb, "\n }%s\n", last? "" : ","); +} + +static void add_push(apr_bucket_brigade *bb, h2_session *s, + h2_stream *stream, int last) +{ + h2_push_diary *diary; + apr_status_t status; - diary = session->push_diary; + bbout(bb, " \"push\": {\n"); + diary = s->push_diary; if (diary) { const char *data; const char *base64_digest; apr_size_t len; - status = h2_push_diary_digest_get(diary, stream->pool, 256, - stream->request->authority, &data, &len); + status = h2_push_diary_digest_get(diary, bb->p, 256, + stream->request->authority, + &data, &len); if (status == APR_SUCCESS) { - base64_digest = h2_util_base64url_encode(data, len, stream->pool); - bbout(bb, " \"cache_digest\": \"%s\",\n", base64_digest); - } - - /* try the reverse for testing purposes */ - status = h2_push_diary_digest_set(diary, stream->request->authority, data, len); - if (status == APR_SUCCESS) { - status = h2_push_diary_digest_get(diary, stream->pool, 256, - stream->request->authority, &data, &len); - if (status == APR_SUCCESS) { - base64_digest = h2_util_base64url_encode(data, len, stream->pool); - bbout(bb, " \"cache_digest^2\": \"%s\",\n", base64_digest); - } + base64_digest = h2_util_base64url_encode(data, len, bb->p); + bbout(bb, " \"cacheDigest\": \"%s\",\n", base64_digest); } } - bbout(bb, " \"frames_received\": %ld,\n", (long)session->frames_received); - bbout(bb, " \"frames_sent\": %ld,\n", (long)session->frames_sent); - bbout(bb, " \"bytes_received\": %"APR_UINT64_T_FMT",\n", session->io.bytes_read); - bbout(bb, " \"bytes_sent\": %"APR_UINT64_T_FMT"\n", session->io.bytes_written); + bbout(bb, " \"promises\": %d,\n", s->pushes_promised); + bbout(bb, " \"submits\": %d,\n", s->pushes_submitted); + bbout(bb, " \"resets\": %d\n", s->pushes_reset); + bbout(bb, " }%s\n", last? "" : ","); +} + +static void add_in(apr_bucket_brigade *bb, h2_session *s, int last) +{ + bbout(bb, " \"in\": {\n"); + bbout(bb, " \"requests\": %d,\n", s->remote.emitted_count); + bbout(bb, " \"resets\": %d, \n", s->streams_reset); + bbout(bb, " \"frames\": %ld,\n", (long)s->frames_received); + bbout(bb, " \"octets\": %"APR_UINT64_T_FMT"\n", s->io.bytes_read); + bbout(bb, " }%s\n", last? "" : ","); +} + +static void add_out(apr_bucket_brigade *bb, h2_session *s, int last) +{ + bbout(bb, " \"out\": {\n"); + bbout(bb, " \"responses\": %d,\n", s->responses_submitted); + bbout(bb, " \"frames\": %ld,\n", (long)s->frames_sent); + bbout(bb, " \"octets\": %"APR_UINT64_T_FMT"\n", s->io.bytes_written); + bbout(bb, " }%s\n", last? "" : ","); +} + +static void add_stats(apr_bucket_brigade *bb, h2_session *s, + h2_stream *stream, int last) +{ + bbout(bb, " \"stats\": {\n"); + add_in(bb, s, 0); + add_out(bb, s, 0); + add_push(bb, s, stream, 1); + bbout(bb, " }%s\n", last? "" : ","); +} + +static apr_status_t h2_status_insert(h2_task *task, apr_bucket *b) +{ + conn_rec *c = task->c->master; + h2_ctx *h2ctx = h2_ctx_get(c, 0); + h2_session *session; + h2_stream *stream; + apr_bucket_brigade *bb; + apr_bucket *e; + int32_t connFlowIn, connFlowOut; + + + if (!h2ctx || (session = h2_ctx_session_get(h2ctx)) == NULL) { + return APR_SUCCESS; + } + + stream = h2_session_stream_get(session, task->stream_id); + if (!stream) { + /* stream already done */ + return APR_SUCCESS; + } + + bb = apr_brigade_create(stream->pool, c->bucket_alloc); + + connFlowIn = nghttp2_session_get_effective_local_window_size(session->ngh2); + connFlowOut = nghttp2_session_get_remote_window_size(session->ngh2); + + bbout(bb, "{\n"); + bbout(bb, " \"version\": \"draft-01\",\n"); + add_settings(bb, session, 0); + add_peer_settings(bb, session, 0); + bbout(bb, " \"connFlowIn\": %d,\n", connFlowIn); + bbout(bb, " \"connFlowOut\": %d,\n", connFlowOut); + bbout(bb, " \"sentGoAway\": %d,\n", session->local.shutdown); + + add_streams(bb, session, 0); + + add_stats(bb, session, stream, 1); bbout(bb, "}\n"); + while ((e = APR_BRIGADE_FIRST(bb)) != APR_BRIGADE_SENTINEL(bb)) { + APR_BUCKET_REMOVE(e); + APR_BUCKET_INSERT_AFTER(b, e); + b = e; + } + apr_brigade_destroy(bb); + return APR_SUCCESS; } -apr_status_t h2_stream_filter(h2_stream *stream) +static apr_status_t status_event(void *ctx, h2_bucket_event event, + apr_bucket *b) { - const char *fname = stream->response? stream->response->sos_filter : NULL; - if (fname && !strcmp(H2_SOS_H2_STATUS, fname)) { - return h2_status_stream_filter(stream); + h2_task *task = ctx; + + ap_log_cerror(APLOG_MARK, APLOG_TRACE3, 0, task->c->master, + "status_event(%s): %d", task->id, event); + switch (event) { + case H2_BUCKET_EV_BEFORE_MASTER_SEND: + h2_status_insert(task, b); + break; + default: + break; } return APR_SUCCESS; } +int h2_filter_h2_status_handler(request_rec *r) +{ + h2_ctx *ctx = h2_ctx_rget(r); + conn_rec *c = r->connection; + h2_task *task; + apr_bucket_brigade *bb; + apr_bucket *b; + apr_status_t status; + + if (strcmp(r->handler, "http2-status")) { + return DECLINED; + } + if (r->method_number != M_GET && r->method_number != M_POST) { + return DECLINED; + } + + task = ctx? h2_ctx_get_task(ctx) : NULL; + if (task) { + + if ((status = ap_discard_request_body(r)) != OK) { + return status; + } + + /* We need to handle the actual output on the main thread, as + * we need to access h2_session information. */ + r->status = 200; + r->clength = -1; + r->chunked = 1; + apr_table_unset(r->headers_out, "Content-Length"); + ap_set_content_type(r, "application/json"); + apr_table_setn(r->notes, H2_FILTER_DEBUG_NOTE, "on"); + + bb = apr_brigade_create(r->pool, c->bucket_alloc); + b = h2_bucket_observer_create(c->bucket_alloc, status_event, task); + APR_BRIGADE_INSERT_TAIL(bb, b); + b = apr_bucket_eos_create(c->bucket_alloc); + APR_BRIGADE_INSERT_TAIL(bb, b); + + ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, + "status_handler(%s): checking for incoming trailers", + task->id); + if (r->trailers_in && !apr_is_empty_table(r->trailers_in)) { + ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, + "status_handler(%s): seeing incoming trailers", + task->id); + apr_table_setn(r->trailers_out, "h2-trailers-in", + apr_itoa(r->pool, 1)); + } + + status = ap_pass_brigade(r->output_filters, bb); + if (status == APR_SUCCESS + || r->status != HTTP_OK + || c->aborted) { + return OK; + } + else { + /* no way to know what type of error occurred */ + ap_log_rerror(APLOG_MARK, APLOG_TRACE1, status, r, + "status_handler(%s): ap_pass_brigade failed", + task->id); + return AP_FILTER_ERROR; + } + } + return DECLINED; +} + diff -up --new-file httpd-2.4.23/modules/http2/h2_filter.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_filter.h --- httpd-2.4.23/modules/http2/h2_filter.h 2016-05-23 12:55:29.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_filter.h 2017-03-31 21:41:01.000000000 +0200 @@ -16,24 +16,21 @@ #ifndef __mod_h2__h2_filter__ #define __mod_h2__h2_filter__ +struct h2_bucket_beam; +struct h2_headers; struct h2_stream; struct h2_session; -typedef apr_status_t h2_filter_cin_cb(void *ctx, - const char *data, apr_size_t len, - apr_size_t *readlen); - typedef struct h2_filter_cin { apr_pool_t *pool; - apr_bucket_brigade *bb; - h2_filter_cin_cb *cb; - void *cb_ctx; apr_socket_t *socket; apr_interval_time_t timeout; - apr_time_t start_read; + apr_bucket_brigade *bb; + struct h2_session *session; + apr_bucket *cur; } h2_filter_cin; -h2_filter_cin *h2_filter_cin_create(apr_pool_t *p, h2_filter_cin_cb *cb, void *ctx); +h2_filter_cin *h2_filter_cin_create(struct h2_session *session); void h2_filter_cin_timeout_set(h2_filter_cin *cin, apr_interval_time_t timeout); @@ -43,9 +40,33 @@ apr_status_t h2_filter_core_input(ap_fil apr_read_type_e block, apr_off_t readbytes); -#define H2_RESP_SOS_NOTE "h2-sos-filter" +/******* observer bucket ******************************************************/ + +typedef enum { + H2_BUCKET_EV_BEFORE_DESTROY, + H2_BUCKET_EV_BEFORE_MASTER_SEND +} h2_bucket_event; + +extern const apr_bucket_type_t h2_bucket_type_observer; + +typedef apr_status_t h2_bucket_event_cb(void *ctx, h2_bucket_event event, apr_bucket *b); + +#define H2_BUCKET_IS_OBSERVER(e) (e->type == &h2_bucket_type_observer) + +apr_bucket * h2_bucket_observer_make(apr_bucket *b, h2_bucket_event_cb *cb, + void *ctx); + +apr_bucket * h2_bucket_observer_create(apr_bucket_alloc_t *list, + h2_bucket_event_cb *cb, void *ctx); + +apr_status_t h2_bucket_observer_fire(apr_bucket *b, h2_bucket_event event); + +apr_bucket *h2_bucket_observer_beam(struct h2_bucket_beam *beam, + apr_bucket_brigade *dest, + const apr_bucket *src); + +/******* /.well-known/h2/state handler ****************************************/ -apr_status_t h2_stream_filter(struct h2_stream *stream); int h2_filter_h2_status_handler(request_rec *r); #endif /* __mod_h2__h2_filter__ */ diff -up --new-file httpd-2.4.23/modules/http2/h2_from_h1.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_from_h1.c --- httpd-2.4.23/modules/http2/h2_from_h1.c 2016-05-18 17:10:20.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_from_h1.c 2017-05-05 15:23:48.000000000 +0200 @@ -16,6 +16,7 @@ #include <assert.h> #include <stdio.h> +#include <apr_date.h> #include <apr_lib.h> #include <apr_strings.h> @@ -28,190 +29,12 @@ #include <util_time.h> #include "h2_private.h" -#include "h2_response.h" +#include "h2_headers.h" #include "h2_from_h1.h" #include "h2_task.h" #include "h2_util.h" -static void set_state(h2_from_h1 *from_h1, h2_from_h1_state_t state); - -h2_from_h1 *h2_from_h1_create(int stream_id, apr_pool_t *pool) -{ - h2_from_h1 *from_h1 = apr_pcalloc(pool, sizeof(h2_from_h1)); - if (from_h1) { - from_h1->stream_id = stream_id; - from_h1->pool = pool; - from_h1->state = H2_RESP_ST_STATUS_LINE; - from_h1->hlines = apr_array_make(pool, 10, sizeof(char *)); - } - return from_h1; -} - -static void set_state(h2_from_h1 *from_h1, h2_from_h1_state_t state) -{ - if (from_h1->state != state) { - from_h1->state = state; - } -} - -h2_response *h2_from_h1_get_response(h2_from_h1 *from_h1) -{ - return from_h1->response; -} - -static apr_status_t make_h2_headers(h2_from_h1 *from_h1, request_rec *r) -{ - from_h1->response = h2_response_create(from_h1->stream_id, 0, - from_h1->http_status, - from_h1->hlines, - r->notes, - from_h1->pool); - from_h1->content_length = from_h1->response->content_length; - from_h1->chunked = r->chunked; - - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, r->connection, APLOGNO(03197) - "h2_from_h1(%d): converted headers, content-length: %d" - ", chunked=%d", - from_h1->stream_id, (int)from_h1->content_length, - (int)from_h1->chunked); - - set_state(from_h1, ((from_h1->chunked || from_h1->content_length > 0)? - H2_RESP_ST_BODY : H2_RESP_ST_DONE)); - /* We are ready to be sent to the client */ - return APR_SUCCESS; -} - -static apr_status_t parse_header(h2_from_h1 *from_h1, ap_filter_t* f, - char *line) { - (void)f; - - if (line[0] == ' ' || line[0] == '\t') { - char **plast; - /* continuation line from the header before this */ - while (line[0] == ' ' || line[0] == '\t') { - ++line; - } - - plast = apr_array_pop(from_h1->hlines); - if (plast == NULL) { - /* not well formed */ - return APR_EINVAL; - } - APR_ARRAY_PUSH(from_h1->hlines, const char*) = apr_psprintf(from_h1->pool, "%s %s", *plast, line); - } - else { - /* new header line */ - APR_ARRAY_PUSH(from_h1->hlines, const char*) = apr_pstrdup(from_h1->pool, line); - } - return APR_SUCCESS; -} - -static apr_status_t get_line(h2_from_h1 *from_h1, apr_bucket_brigade *bb, - ap_filter_t* f, char *line, apr_size_t len) -{ - apr_status_t status; - if (!from_h1->bb) { - from_h1->bb = apr_brigade_create(from_h1->pool, f->c->bucket_alloc); - } - else { - apr_brigade_cleanup(from_h1->bb); - } - status = apr_brigade_split_line(from_h1->bb, bb, - APR_BLOCK_READ, - HUGE_STRING_LEN); - if (status == APR_SUCCESS) { - --len; - status = apr_brigade_flatten(from_h1->bb, line, &len); - if (status == APR_SUCCESS) { - /* we assume a non-0 containing line and remove - * trailing crlf. */ - line[len] = '\0'; - if (len >= 2 && !strcmp(H2_CRLF, line + len - 2)) { - len -= 2; - line[len] = '\0'; - } - - apr_brigade_cleanup(from_h1->bb); - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, f->c, - "h2_from_h1(%d): read line: %s", - from_h1->stream_id, line); - } - } - return status; -} - -apr_status_t h2_from_h1_read_response(h2_from_h1 *from_h1, ap_filter_t* f, - apr_bucket_brigade* bb) -{ - apr_status_t status = APR_SUCCESS; - char line[HUGE_STRING_LEN]; - - if ((from_h1->state == H2_RESP_ST_BODY) - || (from_h1->state == H2_RESP_ST_DONE)) { - if (from_h1->chunked) { - /* The httpd core HTTP_HEADER filter has or will install the - * "CHUNK" output transcode filter, which appears further down - * the filter chain. We do not want it for HTTP/2. - * Once we successfully deinstalled it, this filter has no - * further function and we remove it. - */ - status = ap_remove_output_filter_byhandle(f->r->output_filters, - "CHUNK"); - if (status == APR_SUCCESS) { - ap_remove_output_filter(f); - } - } - - return ap_pass_brigade(f->next, bb); - } - - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, f->c, - "h2_from_h1(%d): read_response", from_h1->stream_id); - - while (!APR_BRIGADE_EMPTY(bb) && status == APR_SUCCESS) { - - switch (from_h1->state) { - - case H2_RESP_ST_STATUS_LINE: - case H2_RESP_ST_HEADERS: - status = get_line(from_h1, bb, f, line, sizeof(line)); - if (status != APR_SUCCESS) { - return status; - } - if (from_h1->state == H2_RESP_ST_STATUS_LINE) { - /* instead of parsing, just take it directly */ - from_h1->http_status = f->r->status; - from_h1->state = H2_RESP_ST_HEADERS; - } - else if (line[0] == '\0') { - /* end of headers, create the h2_response and - * pass the rest of the brigade down the filter - * chain. - */ - status = make_h2_headers(from_h1, f->r); - if (from_h1->bb) { - apr_brigade_destroy(from_h1->bb); - from_h1->bb = NULL; - } - if (!APR_BRIGADE_EMPTY(bb)) { - return ap_pass_brigade(f->next, bb); - } - } - else { - status = parse_header(from_h1, f, line); - } - break; - - default: - return ap_pass_brigade(f->next, bb); - } - - } - - return status; -} - /* This routine is called by apr_table_do and merges all instances of * the passed field values into a single array that will be further * processed by some later routine. Originally intended to help split @@ -280,8 +103,7 @@ static void fix_vary(request_rec *r) * its comma-separated fieldname values, and then add them to varies * if not already present in the array. */ - apr_table_do((int (*)(void *, const char *, const char *))uniq_field_values, - (void *) varies, r->headers_out, "Vary", NULL); + apr_table_do(uniq_field_values, varies, r->headers_out, "Vary", NULL); /* If we found any, replace old Vary fields with unique-ified value */ @@ -291,8 +113,8 @@ static void fix_vary(request_rec *r) } } -void h2_from_h1_set_basic_http_header(apr_table_t *headers, request_rec *r, - apr_pool_t *pool) +static void set_basic_http_header(apr_table_t *headers, request_rec *r, + apr_pool_t *pool) { char *date = NULL; const char *proxy_date = NULL; @@ -345,7 +167,7 @@ static int copy_header(void *ctx, const return 1; } -static h2_response *create_response(h2_from_h1 *from_h1, request_rec *r) +static h2_headers *create_response(h2_task *task, request_rec *r) { const char *clheader; const char *ctype; @@ -450,10 +272,9 @@ static h2_response *create_response(h2_f headers = apr_table_make(r->pool, 10); - h2_from_h1_set_basic_http_header(headers, r, r->pool); + set_basic_http_header(headers, r, r->pool); if (r->status == HTTP_NOT_MODIFIED) { - apr_table_do((int (*)(void *, const char *, const char *)) copy_header, - (void *) headers, r->headers_out, + apr_table_do(copy_header, headers, r->headers_out, "ETag", "Content-Location", "Expires", @@ -467,118 +288,570 @@ static h2_response *create_response(h2_f NULL); } else { - apr_table_do((int (*)(void *, const char *, const char *)) copy_header, - (void *) headers, r->headers_out, NULL); + apr_table_do(copy_header, headers, r->headers_out, NULL); } - return h2_response_rcreate(from_h1->stream_id, r, headers, r->pool); + return h2_headers_rcreate(r, r->status, headers, r->pool); +} + +typedef enum { + H2_RP_STATUS_LINE, + H2_RP_HEADER_LINE, + H2_RP_DONE +} h2_rp_state_t; + +typedef struct h2_response_parser { + h2_rp_state_t state; + h2_task *task; + int http_status; + apr_array_header_t *hlines; + apr_bucket_brigade *tmp; +} h2_response_parser; + +static apr_status_t parse_header(h2_response_parser *parser, char *line) { + const char *hline; + if (line[0] == ' ' || line[0] == '\t') { + char **plast; + /* continuation line from the header before this */ + while (line[0] == ' ' || line[0] == '\t') { + ++line; + } + + plast = apr_array_pop(parser->hlines); + if (plast == NULL) { + /* not well formed */ + return APR_EINVAL; + } + hline = apr_psprintf(parser->task->pool, "%s %s", *plast, line); + } + else { + /* new header line */ + hline = apr_pstrdup(parser->task->pool, line); + } + APR_ARRAY_PUSH(parser->hlines, const char*) = hline; + return APR_SUCCESS; } -apr_status_t h2_response_output_filter(ap_filter_t *f, apr_bucket_brigade *bb) +static apr_status_t get_line(h2_response_parser *parser, apr_bucket_brigade *bb, + char *line, apr_size_t len) { - h2_task *task = f->ctx; - h2_from_h1 *from_h1 = task->output.from_h1; - request_rec *r = f->r; - apr_bucket *b; - ap_bucket_error *eb = NULL; + h2_task *task = parser->task; + apr_status_t status; + + if (!parser->tmp) { + parser->tmp = apr_brigade_create(task->pool, task->c->bucket_alloc); + } + status = apr_brigade_split_line(parser->tmp, bb, APR_BLOCK_READ, + HUGE_STRING_LEN); + if (status == APR_SUCCESS) { + --len; + status = apr_brigade_flatten(parser->tmp, line, &len); + if (status == APR_SUCCESS) { + /* we assume a non-0 containing line and remove trailing crlf. */ + line[len] = '\0'; + if (len >= 2 && !strcmp(H2_CRLF, line + len - 2)) { + len -= 2; + line[len] = '\0'; + apr_brigade_cleanup(parser->tmp); + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, task->c, + "h2_task(%s): read response line: %s", + task->id, line); + } + else { + /* this does not look like a complete line yet */ + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, task->c, + "h2_task(%s): read response, incomplete line: %s", + task->id, line); + return APR_EAGAIN; + } + } + } + apr_brigade_cleanup(parser->tmp); + return status; +} - AP_DEBUG_ASSERT(from_h1 != NULL); +static apr_table_t *make_table(h2_response_parser *parser) +{ + h2_task *task = parser->task; + apr_array_header_t *hlines = parser->hlines; + if (hlines) { + apr_table_t *headers = apr_table_make(task->pool, hlines->nelts); + int i; + + for (i = 0; i < hlines->nelts; ++i) { + char *hline = ((char **)hlines->elts)[i]; + char *sep = ap_strchr(hline, ':'); + if (!sep) { + ap_log_cerror(APLOG_MARK, APLOG_WARNING, APR_EINVAL, task->c, + APLOGNO(02955) "h2_task(%s): invalid header[%d] '%s'", + task->id, i, (char*)hline); + /* not valid format, abort */ + return NULL; + } + (*sep++) = '\0'; + while (*sep == ' ' || *sep == '\t') { + ++sep; + } + + if (!h2_util_ignore_header(hline)) { + apr_table_merge(headers, hline, sep); + } + } + return headers; + } + else { + return apr_table_make(task->pool, 0); + } +} + +static apr_status_t pass_response(h2_task *task, ap_filter_t *f, + h2_response_parser *parser) +{ + apr_bucket *b; + apr_status_t status; - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, f->c, - "h2_from_h1(%d): output_filter called", from_h1->stream_id); + h2_headers *response = h2_headers_create(parser->http_status, + make_table(parser), + NULL, task->pool); + apr_brigade_cleanup(parser->tmp); + b = h2_bucket_headers_create(task->c->bucket_alloc, response); + APR_BRIGADE_INSERT_TAIL(parser->tmp, b); + b = apr_bucket_flush_create(task->c->bucket_alloc); + APR_BRIGADE_INSERT_TAIL(parser->tmp, b); + status = ap_pass_brigade(f->next, parser->tmp); + apr_brigade_cleanup(parser->tmp); + + /* reset parser for possible next response */ + parser->state = H2_RP_STATUS_LINE; + apr_array_clear(parser->hlines); + + if (response->status >= 200) { + task->output.sent_response = 1; + } + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, task->c, + APLOGNO(03197) "h2_task(%s): passed response %d", + task->id, response->status); + return status; +} + +static apr_status_t parse_status(h2_task *task, char *line) +{ + h2_response_parser *parser = task->output.rparser; + int sindex = (apr_date_checkmask(line, "HTTP/#.# ###*")? 9 : + (apr_date_checkmask(line, "HTTP/# ###*")? 7 : 0)); + if (sindex > 0) { + int k = sindex + 3; + char keepchar = line[k]; + line[k] = '\0'; + parser->http_status = atoi(&line[sindex]); + line[k] = keepchar; + parser->state = H2_RP_HEADER_LINE; + + return APR_SUCCESS; + } + /* Seems like there is garbage on the connection. May be a leftover + * from a previous proxy request. + * This should only happen if the H2_RESPONSE filter is not yet in + * place (post_read_request has not been reached and the handler wants + * to write something. Probably just the interim response we are + * waiting for. But if there is other data hanging around before + * that, this needs to fail. */ + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, task->c, APLOGNO(03467) + "h2_task(%s): unable to parse status line: %s", + task->id, line); + return APR_EINVAL; +} + +apr_status_t h2_from_h1_parse_response(h2_task *task, ap_filter_t *f, + apr_bucket_brigade *bb) +{ + h2_response_parser *parser = task->output.rparser; + char line[HUGE_STRING_LEN]; + apr_status_t status = APR_SUCCESS; + + if (!parser) { + parser = apr_pcalloc(task->pool, sizeof(*parser)); + parser->task = task; + parser->state = H2_RP_STATUS_LINE; + parser->hlines = apr_array_make(task->pool, 10, sizeof(char *)); + task->output.rparser = parser; + } - if (r->header_only && from_h1->response) { - /* throw away any data after we have compiled the response */ - apr_brigade_cleanup(bb); - return OK; - } - - for (b = APR_BRIGADE_FIRST(bb); - b != APR_BRIGADE_SENTINEL(bb); - b = APR_BUCKET_NEXT(b)) - { - if (AP_BUCKET_IS_ERROR(b) && !eb) { - eb = b->data; - continue; - } - /* - * If we see an EOC bucket it is a signal that we should get out - * of the way doing nothing. - */ - if (AP_BUCKET_IS_EOC(b)) { - ap_remove_output_filter(f); - ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, f->c, - "h2_from_h1(%d): eoc bucket passed", - from_h1->stream_id); - return ap_pass_brigade(f->next, bb); + while (!APR_BRIGADE_EMPTY(bb) && status == APR_SUCCESS) { + switch (parser->state) { + case H2_RP_STATUS_LINE: + case H2_RP_HEADER_LINE: + status = get_line(parser, bb, line, sizeof(line)); + if (status == APR_EAGAIN) { + /* need more data */ + return APR_SUCCESS; + } + else if (status != APR_SUCCESS) { + return status; + } + if (parser->state == H2_RP_STATUS_LINE) { + /* instead of parsing, just take it directly */ + status = parse_status(task, line); + } + else if (line[0] == '\0') { + /* end of headers, pass response onward */ + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, f->c, + "h2_task(%s): end of response", task->id); + return pass_response(task, f, parser); + } + else { + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, f->c, + "h2_task(%s): response header %s", task->id, line); + status = parse_header(parser, line); + } + break; + + default: + return status; } } + return status; +} + +apr_status_t h2_filter_headers_out(ap_filter_t *f, apr_bucket_brigade *bb) +{ + h2_task *task = f->ctx; + request_rec *r = f->r; + apr_bucket *b, *bresp, *body_bucket = NULL, *next; + ap_bucket_error *eb = NULL; + h2_headers *response = NULL; + int headers_passing = 0; + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, f->c, + "h2_task(%s): output_filter called", task->id); - if (eb) { - int st = eb->status; - apr_brigade_cleanup(bb); - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, f->c, APLOGNO(03047) - "h2_from_h1(%d): err bucket status=%d", - from_h1->stream_id, st); - ap_die(st, r); - return AP_FILTER_ERROR; - } - - from_h1->response = create_response(from_h1, r); - if (from_h1->response == NULL) { - ap_log_cerror(APLOG_MARK, APLOG_NOTICE, 0, f->c, APLOGNO(03048) - "h2_from_h1(%d): unable to create response", - from_h1->stream_id); - return APR_ENOMEM; + if (!task->output.sent_response && !f->c->aborted) { + /* check, if we need to send the response now. Until we actually + * see a DATA bucket or some EOS/EOR, we do not do so. */ + for (b = APR_BRIGADE_FIRST(bb); + b != APR_BRIGADE_SENTINEL(bb); + b = APR_BUCKET_NEXT(b)) + { + if (AP_BUCKET_IS_ERROR(b) && !eb) { + eb = b->data; + } + else if (AP_BUCKET_IS_EOC(b)) { + /* If we see an EOC bucket it is a signal that we should get out + * of the way doing nothing. + */ + ap_remove_output_filter(f); + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, f->c, + "h2_task(%s): eoc bucket passed", task->id); + return ap_pass_brigade(f->next, bb); + } + else if (H2_BUCKET_IS_HEADERS(b)) { + headers_passing = 1; + } + else if (!APR_BUCKET_IS_FLUSH(b)) { + body_bucket = b; + break; + } + } + + if (eb) { + int st = eb->status; + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, f->c, APLOGNO(03047) + "h2_task(%s): err bucket status=%d", task->id, st); + /* throw everything away and replace it with the error response + * generated by ap_die() */ + apr_brigade_cleanup(bb); + ap_die(st, r); + return AP_FILTER_ERROR; + } + + if (body_bucket || !headers_passing) { + /* time to insert the response bucket before the body or if + * no h2_headers is passed, e.g. the response is empty */ + response = create_response(task, r); + if (response == NULL) { + ap_log_cerror(APLOG_MARK, APLOG_NOTICE, 0, f->c, APLOGNO(03048) + "h2_task(%s): unable to create response", task->id); + return APR_ENOMEM; + } + + bresp = h2_bucket_headers_create(f->c->bucket_alloc, response); + if (body_bucket) { + APR_BUCKET_INSERT_BEFORE(body_bucket, bresp); + } + else { + APR_BRIGADE_INSERT_HEAD(bb, bresp); + } + task->output.sent_response = 1; + r->sent_bodyct = 1; + } } if (r->header_only) { ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, f->c, - "h2_from_h1(%d): header_only, cleanup output brigade", - from_h1->stream_id); - apr_brigade_cleanup(bb); - return OK; + "h2_task(%s): header_only, cleanup output brigade", + task->id); + b = body_bucket? body_bucket : APR_BRIGADE_FIRST(bb); + while (b != APR_BRIGADE_SENTINEL(bb)) { + next = APR_BUCKET_NEXT(b); + if (APR_BUCKET_IS_EOS(b) || AP_BUCKET_IS_EOR(b)) { + break; + } + APR_BUCKET_REMOVE(b); + apr_bucket_destroy(b); + b = next; + } } - - r->sent_bodyct = 1; /* Whatever follows is real body stuff... */ - - ap_remove_output_filter(f); - if (APLOGctrace1(f->c)) { - apr_off_t len = 0; - apr_brigade_length(bb, 0, &len); - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, f->c, - "h2_from_h1(%d): removed header filter, passing brigade " - "len=%ld", from_h1->stream_id, (long)len); + else if (task->output.sent_response) { + /* lets get out of the way, our task is done */ + ap_remove_output_filter(f); } return ap_pass_brigade(f->next, bb); } -apr_status_t h2_response_trailers_filter(ap_filter_t *f, apr_bucket_brigade *bb) +static void make_chunk(h2_task *task, apr_bucket_brigade *bb, + apr_bucket *first, apr_off_t chunk_len, + apr_bucket *tail) +{ + /* Surround the buckets [first, tail[ with new buckets carrying the + * HTTP/1.1 chunked encoding format. If tail is NULL, the chunk extends + * to the end of the brigade. */ + char buffer[128]; + apr_bucket *c; + int len; + + len = apr_snprintf(buffer, H2_ALEN(buffer), + "%"APR_UINT64_T_HEX_FMT"\r\n", (apr_uint64_t)chunk_len); + c = apr_bucket_heap_create(buffer, len, NULL, bb->bucket_alloc); + APR_BUCKET_INSERT_BEFORE(first, c); + c = apr_bucket_heap_create("\r\n", 2, NULL, bb->bucket_alloc); + if (tail) { + APR_BUCKET_INSERT_BEFORE(tail, c); + } + else { + APR_BRIGADE_INSERT_TAIL(bb, c); + } + task->input.chunked_total += chunk_len; + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, task->c, + "h2_task(%s): added chunk %ld, total %ld", + task->id, (long)chunk_len, (long)task->input.chunked_total); +} + +static int ser_header(void *ctx, const char *name, const char *value) +{ + apr_bucket_brigade *bb = ctx; + apr_brigade_printf(bb, NULL, NULL, "%s: %s\r\n", name, value); + return 1; +} + +static apr_status_t read_and_chunk(ap_filter_t *f, h2_task *task, + apr_read_type_e block) { + request_rec *r = f->r; + apr_status_t status = APR_SUCCESS; + apr_bucket_brigade *bb = task->input.bbchunk; + + if (!bb) { + bb = apr_brigade_create(r->pool, f->c->bucket_alloc); + task->input.bbchunk = bb; + } + + if (APR_BRIGADE_EMPTY(bb)) { + apr_bucket *b, *next, *first_data = NULL; + apr_bucket_brigade *tmp; + apr_off_t bblen = 0; + + /* get more data from the lower layer filters. Always do this + * in larger pieces, since we handle the read modes ourself. */ + status = ap_get_brigade(f->next, bb, + AP_MODE_READBYTES, block, 32*1024); + if (status == APR_EOF) { + if (!task->input.eos) { + status = apr_brigade_puts(bb, NULL, NULL, "0\r\n\r\n"); + task->input.eos = 1; + return APR_SUCCESS; + } + ap_remove_input_filter(f); + return status; + + } + else if (status != APR_SUCCESS) { + return status; + } + + for (b = APR_BRIGADE_FIRST(bb); + b != APR_BRIGADE_SENTINEL(bb) && !task->input.eos; + b = next) { + next = APR_BUCKET_NEXT(b); + if (APR_BUCKET_IS_METADATA(b)) { + if (first_data) { + make_chunk(task, bb, first_data, bblen, b); + first_data = NULL; + } + + if (H2_BUCKET_IS_HEADERS(b)) { + h2_headers *headers = h2_bucket_headers_get(b); + + ap_assert(headers); + ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, + "h2_task(%s): receiving trailers", task->id); + tmp = apr_brigade_split_ex(bb, b, NULL); + if (!apr_is_empty_table(headers->headers)) { + status = apr_brigade_puts(bb, NULL, NULL, "0\r\n"); + apr_table_do(ser_header, bb, headers->headers, NULL); + status = apr_brigade_puts(bb, NULL, NULL, "\r\n"); + } + else { + status = apr_brigade_puts(bb, NULL, NULL, "0\r\n\r\n"); + } + r->trailers_in = apr_table_clone(r->pool, headers->headers); + APR_BUCKET_REMOVE(b); + apr_bucket_destroy(b); + APR_BRIGADE_CONCAT(bb, tmp); + apr_brigade_destroy(tmp); + task->input.eos = 1; + } + else if (APR_BUCKET_IS_EOS(b)) { + tmp = apr_brigade_split_ex(bb, b, NULL); + status = apr_brigade_puts(bb, NULL, NULL, "0\r\n\r\n"); + APR_BRIGADE_CONCAT(bb, tmp); + apr_brigade_destroy(tmp); + task->input.eos = 1; + } + } + else if (b->length == 0) { + APR_BUCKET_REMOVE(b); + apr_bucket_destroy(b); + } + else { + if (!first_data) { + first_data = b; + bblen = 0; + } + bblen += b->length; + } + } + + if (first_data) { + make_chunk(task, bb, first_data, bblen, NULL); + } + } + return status; +} + +apr_status_t h2_filter_request_in(ap_filter_t* f, + apr_bucket_brigade* bb, + ap_input_mode_t mode, + apr_read_type_e block, + apr_off_t readbytes) { h2_task *task = f->ctx; - h2_from_h1 *from_h1 = task->output.from_h1; request_rec *r = f->r; - apr_bucket *b; + apr_status_t status = APR_SUCCESS; + apr_bucket *b, *next; + core_server_config *conf = + (core_server_config *) ap_get_module_config(r->server->module_config, + &core_module); + + ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, f->r, + "h2_task(%s): request filter, exp=%d", task->id, r->expecting_100); + if (!task->request->chunked) { + status = ap_get_brigade(f->next, bb, mode, block, readbytes); + /* pipe data through, just take care of trailers */ + for (b = APR_BRIGADE_FIRST(bb); + b != APR_BRIGADE_SENTINEL(bb); b = next) { + next = APR_BUCKET_NEXT(b); + if (H2_BUCKET_IS_HEADERS(b)) { + h2_headers *headers = h2_bucket_headers_get(b); + ap_assert(headers); + ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, + "h2_task(%s): receiving trailers", task->id); + r->trailers_in = headers->headers; + if (conf && conf->merge_trailers == AP_MERGE_TRAILERS_ENABLE) { + r->headers_in = apr_table_overlay(r->pool, r->headers_in, + r->trailers_in); + } + APR_BUCKET_REMOVE(b); + apr_bucket_destroy(b); + ap_remove_input_filter(f); + break; + } + } + return status; + } + + /* Things are more complicated. The standard HTTP input filter, which + * does a lot what we do not want to duplicate, also cares about chunked + * transfer encoding and trailers. + * We need to simulate chunked encoding for it to be happy. + */ + if ((status = read_and_chunk(f, task, block)) != APR_SUCCESS) { + return status; + } + + if (mode == AP_MODE_EXHAUSTIVE) { + /* return all we have */ + APR_BRIGADE_CONCAT(bb, task->input.bbchunk); + } + else if (mode == AP_MODE_READBYTES) { + status = h2_brigade_concat_length(bb, task->input.bbchunk, readbytes); + } + else if (mode == AP_MODE_SPECULATIVE) { + status = h2_brigade_copy_length(bb, task->input.bbchunk, readbytes); + } + else if (mode == AP_MODE_GETLINE) { + /* we are reading a single LF line, e.g. the HTTP headers. + * this has the nasty side effect to split the bucket, even + * though it ends with CRLF and creates a 0 length bucket */ + status = apr_brigade_split_line(bb, task->input.bbchunk, block, + HUGE_STRING_LEN); + if (APLOGctrace1(f->c)) { + char buffer[1024]; + apr_size_t len = sizeof(buffer)-1; + apr_brigade_flatten(bb, buffer, &len); + buffer[len] = 0; + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, f->c, + "h2_task(%s): getline: %s", + task->id, buffer); + } + } + else { + /* Hmm, well. There is mode AP_MODE_EATCRLF, but we chose not + * to support it. Seems to work. */ + ap_log_cerror(APLOG_MARK, APLOG_ERR, APR_ENOTIMPL, f->c, + APLOGNO(02942) + "h2_task, unsupported READ mode %d", mode); + status = APR_ENOTIMPL; + } + + h2_util_bb_log(f->c, task->stream_id, APLOG_TRACE2, "forwarding input", bb); + return status; +} + +apr_status_t h2_filter_trailers_out(ap_filter_t *f, apr_bucket_brigade *bb) +{ + h2_task *task = f->ctx; + request_rec *r = f->r; + apr_bucket *b, *e; - if (from_h1 && from_h1->response) { - /* Detect the EOR bucket and forward any trailers that may have - * been set to our h2_response. + if (task && r) { + /* Detect the EOS/EOR bucket and forward any trailers that may have + * been set to our h2_headers. */ for (b = APR_BRIGADE_FIRST(bb); b != APR_BRIGADE_SENTINEL(bb); b = APR_BUCKET_NEXT(b)) { - if (AP_BUCKET_IS_EOR(b)) { - /* FIXME: need a better test case than this. - apr_table_setn(r->trailers_out, "X", "1"); */ - if (r->trailers_out && !apr_is_empty_table(r->trailers_out)) { - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, f->c, APLOGNO(03049) - "h2_from_h1(%d): trailers filter, saving trailers", - from_h1->stream_id); - h2_response_set_trailers(from_h1->response, - apr_table_clone(from_h1->pool, - r->trailers_out)); - } + if ((APR_BUCKET_IS_EOS(b) || AP_BUCKET_IS_EOR(b)) + && r->trailers_out && !apr_is_empty_table(r->trailers_out)) { + h2_headers *headers; + apr_table_t *trailers; + + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, f->c, APLOGNO(03049) + "h2_task(%s): sending trailers", task->id); + trailers = apr_table_clone(r->pool, r->trailers_out); + headers = h2_headers_rcreate(r, HTTP_OK, trailers, r->pool); + e = h2_bucket_headers_create(bb->bucket_alloc, headers); + APR_BUCKET_INSERT_BEFORE(b, e); + apr_table_clear(r->trailers_out); + ap_remove_output_filter(f); break; } } diff -up --new-file httpd-2.4.23/modules/http2/h2_from_h1.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_from_h1.h --- httpd-2.4.23/modules/http2/h2_from_h1.h 2016-05-18 17:10:20.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_from_h1.h 2016-10-17 18:11:12.000000000 +0200 @@ -30,46 +30,20 @@ * we need to have all handlers and filters involved in request/response * processing, so this seems to be the way for now. */ +struct h2_headers; +struct h2_task; -typedef enum { - H2_RESP_ST_STATUS_LINE, /* parsing http/1 status line */ - H2_RESP_ST_HEADERS, /* parsing http/1 response headers */ - H2_RESP_ST_BODY, /* transferring response body */ - H2_RESP_ST_DONE /* complete response converted */ -} h2_from_h1_state_t; +apr_status_t h2_from_h1_parse_response(struct h2_task *task, ap_filter_t *f, + apr_bucket_brigade *bb); -struct h2_response; +apr_status_t h2_filter_headers_out(ap_filter_t *f, apr_bucket_brigade *bb); -typedef struct h2_from_h1 h2_from_h1; +apr_status_t h2_filter_request_in(ap_filter_t* f, + apr_bucket_brigade* brigade, + ap_input_mode_t mode, + apr_read_type_e block, + apr_off_t readbytes); -struct h2_from_h1 { - int stream_id; - h2_from_h1_state_t state; - apr_pool_t *pool; - apr_bucket_brigade *bb; - - apr_off_t content_length; - int chunked; - - int http_status; - apr_array_header_t *hlines; - - struct h2_response *response; -}; - - -h2_from_h1 *h2_from_h1_create(int stream_id, apr_pool_t *pool); - -apr_status_t h2_from_h1_read_response(h2_from_h1 *from_h1, - ap_filter_t* f, apr_bucket_brigade* bb); - -struct h2_response *h2_from_h1_get_response(h2_from_h1 *from_h1); - -apr_status_t h2_response_output_filter(ap_filter_t *f, apr_bucket_brigade *bb); - -apr_status_t h2_response_trailers_filter(ap_filter_t *f, apr_bucket_brigade *bb); - -void h2_from_h1_set_basic_http_header(apr_table_t *headers, request_rec *r, - apr_pool_t *pool); +apr_status_t h2_filter_trailers_out(ap_filter_t *f, apr_bucket_brigade *bb); #endif /* defined(__mod_h2__h2_from_h1__) */ diff -up --new-file httpd-2.4.23/modules/http2/h2.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2.h --- httpd-2.4.23/modules/http2/h2.h 2016-05-23 12:55:29.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2.h 2017-04-18 15:12:38.000000000 +0200 @@ -47,13 +47,14 @@ extern const char *H2_MAGIC_TOKEN; #define H2_HEADER_PATH_LEN 5 #define H2_CRLF "\r\n" +/* Max data size to write so it fits inside a TLS record */ +#define H2_DATA_CHUNK_SIZE ((16*1024) - 100 - 9) + /* Maximum number of padding bytes in a frame, rfc7540 */ #define H2_MAX_PADLEN 256 /* Initial default window size, RFC 7540 ch. 6.5.2 */ #define H2_INITIAL_WINDOW_SIZE ((64*1024)-1) -#define H2_HTTP_2XX(a) ((a) >= 200 && (a) < 300) - #define H2_STREAM_CLIENT_INITIATED(id) (id&0x01) #define H2_ALEN(a) (sizeof(a)/sizeof((a)[0])) @@ -80,34 +81,44 @@ typedef enum { } h2_push_policy; typedef enum { - H2_STREAM_ST_IDLE, - H2_STREAM_ST_OPEN, - H2_STREAM_ST_RESV_LOCAL, - H2_STREAM_ST_RESV_REMOTE, - H2_STREAM_ST_CLOSED_INPUT, - H2_STREAM_ST_CLOSED_OUTPUT, - H2_STREAM_ST_CLOSED, -} h2_stream_state_t; - -typedef enum { H2_SESSION_ST_INIT, /* send initial SETTINGS, etc. */ H2_SESSION_ST_DONE, /* finished, connection close */ H2_SESSION_ST_IDLE, /* nothing to write, expecting data inc */ H2_SESSION_ST_BUSY, /* read/write without stop */ H2_SESSION_ST_WAIT, /* waiting for tasks reporting back */ - H2_SESSION_ST_LOCAL_SHUTDOWN, /* we announced GOAWAY */ - H2_SESSION_ST_REMOTE_SHUTDOWN, /* client announced GOAWAY */ + H2_SESSION_ST_CLEANUP, /* pool is being cleaned up */ } h2_session_state; typedef struct h2_session_props { - apr_uint32_t accepted_max; /* the highest remote stream id was/will be handled */ - apr_uint32_t completed_max; /* the highest remote stream completed */ - apr_uint32_t emitted_count; /* the number of local streams sent */ - apr_uint32_t emitted_max; /* the highest local stream id sent */ - apr_uint32_t error; /* the last session error encountered */ + int accepted_max; /* the highest remote stream id was/will be handled */ + int completed_max; /* the highest remote stream completed */ + int emitted_count; /* the number of local streams sent */ + int emitted_max; /* the highest local stream id sent */ + int error; /* the last session error encountered */ unsigned int accepting : 1; /* if the session is accepting new streams */ + unsigned int shutdown : 1; /* if the final GOAWAY has been sent */ } h2_session_props; +typedef enum h2_stream_state_t { + H2_SS_IDLE, + H2_SS_RSVD_R, + H2_SS_RSVD_L, + H2_SS_OPEN, + H2_SS_CLOSED_R, + H2_SS_CLOSED_L, + H2_SS_CLOSED, + H2_SS_CLEANUP, + H2_SS_MAX +} h2_stream_state_t; + +typedef enum { + H2_SEV_CLOSED_L, + H2_SEV_CLOSED_R, + H2_SEV_CANCELLED, + H2_SEV_EOS_SENT, + H2_SEV_IN_DATA_PENDING, +} h2_stream_event_t; + /* h2_request is the transformer of HTTP2 streams into HTTP/1.1 internal * format that will be fed to various httpd input filters to finally @@ -116,37 +127,23 @@ typedef struct h2_session_props { typedef struct h2_request h2_request; struct h2_request { - int id; /* stream id */ - int initiated_on; /* initiating stream id (PUSH) or 0 */ - const char *method; /* pseudo header values, see ch. 8.1.2.3 */ const char *scheme; const char *authority; const char *path; - apr_table_t *headers; - apr_table_t *trailers; apr_time_t request_time; - apr_off_t content_length; - - unsigned int chunked : 1; /* iff requst body needs to be forwarded as chunked */ - unsigned int eoh : 1; /* iff end-of-headers has been seen and request is complete */ - unsigned int body : 1; /* iff this request has a body */ + unsigned int chunked : 1; /* iff requst body needs to be forwarded as chunked */ unsigned int serialize : 1; /* iff this request is written in HTTP/1.1 serialization */ - unsigned int push_policy; /* which push policy to use for this request */ }; -typedef struct h2_response h2_response; +typedef struct h2_headers h2_headers; -struct h2_response { - int stream_id; - int rst_error; - int http_status; - apr_off_t content_length; +struct h2_headers { + int status; apr_table_t *headers; - apr_table_t *trailers; - const char *sos_filter; + apr_table_t *notes; }; typedef apr_status_t h2_io_data_cb(void *ctx, const char *data, apr_off_t len); @@ -155,7 +152,9 @@ typedef int h2_stream_pri_cmp(int stream /* Note key to attach connection task id to conn_rec/request_rec instances */ -#define H2_TASK_ID_NOTE "http2-task-id" - +#define H2_TASK_ID_NOTE "http2-task-id" +#define H2_FILTER_DEBUG_NOTE "http2-debug" +#define H2_HDR_CONFORMANCE "http2-hdr-conformance" +#define H2_HDR_CONFORMANCE_UNSAFE "unsafe" #endif /* defined(__mod_h2__h2__) */ diff -up --new-file httpd-2.4.23/modules/http2/h2_h2.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_h2.c --- httpd-2.4.23/modules/http2/h2_h2.c 2016-05-14 13:49:01.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_h2.c 2017-03-12 15:20:29.000000000 +0100 @@ -32,12 +32,15 @@ #include "mod_http2.h" #include "h2_private.h" +#include "h2_bucket_beam.h" #include "h2_stream.h" #include "h2_task.h" #include "h2_config.h" #include "h2_ctx.h" #include "h2_conn.h" +#include "h2_filter.h" #include "h2_request.h" +#include "h2_headers.h" #include "h2_session.h" #include "h2_util.h" #include "h2_h2.h" @@ -433,6 +436,7 @@ static int cipher_is_blacklisted(const c static int h2_h2_process_conn(conn_rec* c); static int h2_h2_pre_close_conn(conn_rec* c); static int h2_h2_post_read_req(request_rec *r); +static int h2_h2_late_fixups(request_rec *r); /******************************************************************************* * Once per lifetime init, retrieve optional functions @@ -567,6 +571,11 @@ void h2_h2_register_hooks(void) * never see the response. */ ap_hook_post_read_request(h2_h2_post_read_req, NULL, NULL, APR_HOOK_REALLY_FIRST); + ap_hook_fixups(h2_h2_late_fixups, NULL, NULL, APR_HOOK_LAST); + + /* special bucket type transfer through a h2_bucket_beam */ + h2_register_bucket_beamer(h2_bucket_headers_beam); + h2_register_bucket_beamer(h2_bucket_observer_beam); } int h2_h2_process_conn(conn_rec* c) @@ -643,6 +652,7 @@ int h2_h2_process_conn(conn_rec* c) status = h2_conn_setup(ctx, c, NULL); ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, c, "conn_setup"); if (status != APR_SUCCESS) { + h2_ctx_clear(c); return status; } } @@ -665,13 +675,39 @@ static int h2_h2_pre_close_conn(conn_rec ctx = h2_ctx_get(c, 0); if (ctx) { /* If the session has been closed correctly already, we will not - * fiond a h2_ctx here. The presence indicates that the session + * find a h2_ctx here. The presence indicates that the session * is still ongoing. */ return h2_conn_pre_close(ctx, c); } return DECLINED; } +static void check_push(request_rec *r, const char *tag) +{ + const h2_config *conf = h2_config_rget(r); + if (!r->expecting_100 + && conf && conf->push_list && conf->push_list->nelts > 0) { + int i, old_status; + const char *old_line; + ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, r, + "%s, early announcing %d resources for push", + tag, conf->push_list->nelts); + for (i = 0; i < conf->push_list->nelts; ++i) { + h2_push_res *push = &APR_ARRAY_IDX(conf->push_list, i, h2_push_res); + apr_table_addn(r->headers_out, "Link", + apr_psprintf(r->pool, "<%s>; rel=preload%s", + push->uri_ref, push->critical? "; critical" : "")); + } + old_status = r->status; + old_line = r->status_line; + r->status = 103; + r->status_line = "103 Early Hints"; + ap_send_interim_response(r, 1); + r->status = old_status; + r->status_line = old_line; + } +} + static int h2_h2_post_read_req(request_rec *r) { /* slave connection? */ @@ -682,33 +718,48 @@ static int h2_h2_post_read_req(request_r * that we manipulate filters only once. */ if (task && !task->filters_set) { ap_filter_t *f; + ap_log_rerror(APLOG_MARK, APLOG_TRACE3, 0, r, + "h2_task(%s): adding request filters", task->id); + + /* setup the correct filters to process the request for h2 */ + ap_add_input_filter("H2_REQUEST", task, r, r->connection); - /* setup the correct output filters to process the response - * on the proper mod_http2 way. */ - ap_log_rerror(APLOG_MARK, APLOG_TRACE3, 0, r, "adding task output filter"); - if (task->ser_headers) { - ap_add_output_filter("H1_TO_H2_RESP", task, r, r->connection); - } - else { - /* replace the core http filter that formats response headers - * in HTTP/1 with our own that collects status and headers */ - ap_remove_output_filter_byhandle(r->output_filters, "HTTP_HEADER"); - ap_add_output_filter("H2_RESPONSE", task, r, r->connection); - } + /* replace the core http filter that formats response headers + * in HTTP/1 with our own that collects status and headers */ + ap_remove_output_filter_byhandle(r->output_filters, "HTTP_HEADER"); + ap_add_output_filter("H2_RESPONSE", task, r, r->connection); - /* trailers processing. Incoming trailers are added to this - * request via our h2 input filter, outgoing trailers - * in a special h2 out filter. */ for (f = r->input_filters; f; f = f->next) { - if (!strcmp("H2_TO_H1", f->frec->name)) { + if (!strcmp("H2_SLAVE_IN", f->frec->name)) { f->r = r; break; } } - ap_add_output_filter("H2_TRAILERS", task, r, r->connection); + ap_add_output_filter("H2_TRAILERS_OUT", task, r, r->connection); task->filters_set = 1; } } return DECLINED; +} + +static int h2_h2_late_fixups(request_rec *r) +{ + /* slave connection? */ + if (r->connection->master) { + h2_ctx *ctx = h2_ctx_rget(r); + struct h2_task *task = h2_ctx_get_task(ctx); + if (task) { + /* check if we copy vs. setaside files in this location */ + task->output.copy_files = h2_config_geti(h2_config_rget(r), + H2_CONF_COPY_FILES); + if (task->output.copy_files) { + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, task->c, + "h2_slave_out(%s): copy_files on", task->id); + h2_beam_on_file_beam(task->output.beam, h2_beam_no_files, NULL); + } + check_push(r, "late_fixup"); + } + } + return DECLINED; } diff -up --new-file httpd-2.4.23/modules/http2/h2_h2.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_h2.h --- httpd-2.4.23/modules/http2/h2_h2.h 2016-03-02 12:21:28.000000000 +0100 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_h2.h 2016-08-25 14:48:18.000000000 +0200 @@ -17,7 +17,7 @@ #define __mod_h2__h2_h2__ /** - * List of ALPN protocol identifiers that we suport in cleartext + * List of ALPN protocol identifiers that we support in cleartext * negotiations. NULL terminated. */ extern const char *h2_clear_protos[]; @@ -36,7 +36,7 @@ extern const char *h2_tls_protos[]; const char *h2_h2_err_description(unsigned int h2_error); /* - * One time, post config intialization. + * One time, post config initialization. */ apr_status_t h2_h2_init(apr_pool_t *pool, server_rec *s); diff -up --new-file httpd-2.4.23/modules/http2/h2_headers.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_headers.c --- httpd-2.4.23/modules/http2/h2_headers.c 1970-01-01 01:00:00.000000000 +0100 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_headers.c 2017-04-18 15:12:38.000000000 +0200 @@ -0,0 +1,177 @@ +/* Copyright 2015 greenbytes GmbH (https://www.greenbytes.de) + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <assert.h> +#include <stdio.h> + +#include <apr_strings.h> + +#include <httpd.h> +#include <http_core.h> +#include <http_log.h> +#include <util_time.h> + +#include <nghttp2/nghttp2.h> + +#include "h2_private.h" +#include "h2_h2.h" +#include "h2_util.h" +#include "h2_request.h" +#include "h2_headers.h" + + +static int is_unsafe(server_rec *s) +{ + core_server_config *conf = ap_get_core_module_config(s->module_config); + return (conf->http_conformance == AP_HTTP_CONFORMANCE_UNSAFE); +} + +typedef struct { + apr_bucket_refcount refcount; + h2_headers *headers; +} h2_bucket_headers; + +static apr_status_t bucket_read(apr_bucket *b, const char **str, + apr_size_t *len, apr_read_type_e block) +{ + (void)b; + (void)block; + *str = NULL; + *len = 0; + return APR_SUCCESS; +} + +apr_bucket * h2_bucket_headers_make(apr_bucket *b, h2_headers *r) +{ + h2_bucket_headers *br; + + br = apr_bucket_alloc(sizeof(*br), b->list); + br->headers = r; + + b = apr_bucket_shared_make(b, br, 0, 0); + b->type = &h2_bucket_type_headers; + + return b; +} + +apr_bucket * h2_bucket_headers_create(apr_bucket_alloc_t *list, + h2_headers *r) +{ + apr_bucket *b = apr_bucket_alloc(sizeof(*b), list); + + APR_BUCKET_INIT(b); + b->free = apr_bucket_free; + b->list = list; + b = h2_bucket_headers_make(b, r); + return b; +} + +h2_headers *h2_bucket_headers_get(apr_bucket *b) +{ + if (H2_BUCKET_IS_HEADERS(b)) { + return ((h2_bucket_headers *)b->data)->headers; + } + return NULL; +} + +const apr_bucket_type_t h2_bucket_type_headers = { + "H2HEADERS", 5, APR_BUCKET_METADATA, + apr_bucket_destroy_noop, + bucket_read, + apr_bucket_setaside_noop, + apr_bucket_split_notimpl, + apr_bucket_shared_copy +}; + +apr_bucket *h2_bucket_headers_beam(struct h2_bucket_beam *beam, + apr_bucket_brigade *dest, + const apr_bucket *src) +{ + if (H2_BUCKET_IS_HEADERS(src)) { + h2_headers *r = ((h2_bucket_headers *)src->data)->headers; + apr_bucket *b = h2_bucket_headers_create(dest->bucket_alloc, r); + APR_BRIGADE_INSERT_TAIL(dest, b); + return b; + } + return NULL; +} + + +h2_headers *h2_headers_create(int status, apr_table_t *headers_in, + apr_table_t *notes, apr_pool_t *pool) +{ + h2_headers *headers = apr_pcalloc(pool, sizeof(h2_headers)); + headers->status = status; + headers->headers = (headers_in? apr_table_copy(pool, headers_in) + : apr_table_make(pool, 5)); + headers->notes = (notes? apr_table_copy(pool, notes) + : apr_table_make(pool, 5)); + return headers; +} + +h2_headers *h2_headers_rcreate(request_rec *r, int status, + apr_table_t *header, apr_pool_t *pool) +{ + h2_headers *headers = h2_headers_create(status, header, r->notes, pool); + if (headers->status == HTTP_FORBIDDEN) { + const char *cause = apr_table_get(r->notes, "ssl-renegotiate-forbidden"); + if (cause) { + /* This request triggered a TLS renegotiation that is now allowed + * in HTTP/2. Tell the client that it should use HTTP/1.1 for this. + */ + ap_log_rerror(APLOG_MARK, APLOG_DEBUG, headers->status, r, + APLOGNO(03061) + "h2_headers(%ld): renegotiate forbidden, cause: %s", + (long)r->connection->id, cause); + headers->status = H2_ERR_HTTP_1_1_REQUIRED; + } + } + if (is_unsafe(r->server)) { + apr_table_setn(headers->notes, H2_HDR_CONFORMANCE, + H2_HDR_CONFORMANCE_UNSAFE); + } + return headers; +} + +h2_headers *h2_headers_copy(apr_pool_t *pool, h2_headers *h) +{ + return h2_headers_create(h->status, apr_table_copy(pool, h->headers), + apr_table_copy(pool, h->notes), pool); +} + +h2_headers *h2_headers_die(apr_status_t type, + const h2_request *req, apr_pool_t *pool) +{ + h2_headers *headers; + char *date; + + headers = apr_pcalloc(pool, sizeof(h2_headers)); + headers->status = (type >= 200 && type < 600)? type : 500; + headers->headers = apr_table_make(pool, 5); + headers->notes = apr_table_make(pool, 5); + + date = apr_palloc(pool, APR_RFC822_DATE_LEN); + ap_recent_rfc822_date(date, req? req->request_time : apr_time_now()); + apr_table_setn(headers->headers, "Date", date); + apr_table_setn(headers->headers, "Server", ap_get_server_banner()); + + return headers; +} + +int h2_headers_are_response(h2_headers *headers) +{ + return headers->status >= 200; +} + diff -up --new-file httpd-2.4.23/modules/http2/h2_headers.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_headers.h --- httpd-2.4.23/modules/http2/h2_headers.h 1970-01-01 01:00:00.000000000 +0100 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_headers.h 2017-04-18 15:12:38.000000000 +0200 @@ -0,0 +1,76 @@ +/* Copyright 2015 greenbytes GmbH (https://www.greenbytes.de) + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __mod_h2__h2_headers__ +#define __mod_h2__h2_headers__ + +#include "h2.h" + +struct h2_bucket_beam; + +extern const apr_bucket_type_t h2_bucket_type_headers; + +#define H2_BUCKET_IS_HEADERS(e) (e->type == &h2_bucket_type_headers) + +apr_bucket * h2_bucket_headers_make(apr_bucket *b, h2_headers *r); + +apr_bucket * h2_bucket_headers_create(apr_bucket_alloc_t *list, + h2_headers *r); + +h2_headers *h2_bucket_headers_get(apr_bucket *b); + +apr_bucket *h2_bucket_headers_beam(struct h2_bucket_beam *beam, + apr_bucket_brigade *dest, + const apr_bucket *src); + +/** + * Create the headers from the given status and headers + * @param status the headers status + * @param header the headers of the headers + * @param notes the notes carried by the headers + * @param pool the memory pool to use + */ +h2_headers *h2_headers_create(int status, apr_table_t *header, + apr_table_t *notes, apr_pool_t *pool); + +/** + * Create the headers from the given request_rec. + * @param r the request record which was processed + * @param status the headers status + * @param header the headers of the headers + * @param pool the memory pool to use + */ +h2_headers *h2_headers_rcreate(request_rec *r, int status, + apr_table_t *header, apr_pool_t *pool); + +/** + * Clone the headers into another pool. This will not copy any + * header strings. + */ +h2_headers *h2_headers_copy(apr_pool_t *pool, h2_headers *h); + +/** + * Create the headers for the given error. + * @param stream_id id of the stream to create the headers for + * @param type the error code + * @param req the original h2_request + * @param pool the memory pool to use + */ +h2_headers *h2_headers_die(apr_status_t type, + const struct h2_request *req, apr_pool_t *pool); + +int h2_headers_are_response(h2_headers *headers); + +#endif /* defined(__mod_h2__h2_headers__) */ diff -up --new-file httpd-2.4.23/modules/http2/h2_mplx.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_mplx.c --- httpd-2.4.23/modules/http2/h2_mplx.c 2016-06-22 15:30:24.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_mplx.c 2017-10-13 10:37:45.000000000 +0200 @@ -17,6 +17,7 @@ #include <stddef.h> #include <stdlib.h> +#include <apr_atomic.h> #include <apr_thread_mutex.h> #include <apr_thread_cond.h> #include <apr_strings.h> @@ -26,204 +27,115 @@ #include <http_core.h> #include <http_log.h> +#include <mpm_common.h> + #include "mod_http2.h" +#include "h2.h" #include "h2_private.h" #include "h2_bucket_beam.h" #include "h2_config.h" #include "h2_conn.h" #include "h2_ctx.h" #include "h2_h2.h" -#include "h2_response.h" #include "h2_mplx.h" #include "h2_ngn_shed.h" #include "h2_request.h" #include "h2_stream.h" +#include "h2_session.h" #include "h2_task.h" -#include "h2_worker.h" #include "h2_workers.h" #include "h2_util.h" -static void h2_beam_log(h2_bucket_beam *beam, int id, const char *msg, - conn_rec *c, int level) -{ - if (beam && APLOG_C_IS_LEVEL(c,level)) { - char buffer[2048]; - apr_size_t off = 0; - - off += apr_snprintf(buffer+off, H2_ALEN(buffer)-off, "cl=%d, ", beam->closed); - off += h2_util_bl_print(buffer+off, H2_ALEN(buffer)-off, "red", ", ", &beam->red); - off += h2_util_bb_print(buffer+off, H2_ALEN(buffer)-off, "green", ", ", beam->green); - off += h2_util_bl_print(buffer+off, H2_ALEN(buffer)-off, "hold", ", ", &beam->hold); - off += h2_util_bl_print(buffer+off, H2_ALEN(buffer)-off, "purge", "", &beam->purge); - - ap_log_cerror(APLOG_MARK, level, 0, c, "beam(%ld-%d): %s %s", - c->id, id, msg, buffer); - } -} - -/* utility for iterating over ihash task sets */ +/* utility for iterating over ihash stream sets */ typedef struct { h2_mplx *m; - h2_task *task; + h2_stream *stream; apr_time_t now; -} task_iter_ctx; - -/* NULL or the mutex hold by this thread, used for recursive calls - */ -static apr_threadkey_t *thread_lock; +} stream_iter_ctx; apr_status_t h2_mplx_child_init(apr_pool_t *pool, server_rec *s) { - return apr_threadkey_private_create(&thread_lock, NULL, pool); + return APR_SUCCESS; } -static apr_status_t enter_mutex(h2_mplx *m, int *pacquired) -{ - apr_status_t status; - void *mutex = NULL; - - /* Enter the mutex if this thread already holds the lock or - * if we can acquire it. Only on the later case do we unlock - * onleaving the mutex. - * This allow recursive entering of the mutex from the saem thread, - * which is what we need in certain situations involving callbacks - */ - AP_DEBUG_ASSERT(m); - apr_threadkey_private_get(&mutex, thread_lock); - if (mutex == m->lock) { - *pacquired = 0; - return APR_SUCCESS; - } +#define H2_MPLX_ENTER(m) \ + do { apr_status_t rv; if ((rv = apr_thread_mutex_lock(m->lock)) != APR_SUCCESS) {\ + return rv;\ + } } while(0) - AP_DEBUG_ASSERT(m->lock); - status = apr_thread_mutex_lock(m->lock); - *pacquired = (status == APR_SUCCESS); - if (*pacquired) { - apr_threadkey_private_set(m->lock, thread_lock); - } - return status; -} +#define H2_MPLX_LEAVE(m) \ + apr_thread_mutex_unlock(m->lock) + +#define H2_MPLX_ENTER_ALWAYS(m) \ + apr_thread_mutex_lock(m->lock) -static void leave_mutex(h2_mplx *m, int acquired) -{ - if (acquired) { - apr_threadkey_private_set(NULL, thread_lock); - apr_thread_mutex_unlock(m->lock); - } -} +#define H2_MPLX_ENTER_MAYBE(m, lock) \ + if (lock) apr_thread_mutex_lock(m->lock) -static void beam_leave(void *ctx, apr_thread_mutex_t *lock) -{ - leave_mutex(ctx, 1); -} +#define H2_MPLX_LEAVE_MAYBE(m, lock) \ + if (lock) apr_thread_mutex_unlock(m->lock) -static apr_status_t beam_enter(void *ctx, h2_beam_lock *pbl) -{ - h2_mplx *m = ctx; - int acquired; - apr_status_t status; - - status = enter_mutex(m, &acquired); - if (status == APR_SUCCESS) { - pbl->mutex = m->lock; - pbl->leave = acquired? beam_leave : NULL; - pbl->leave_ctx = m; - } - return status; -} +static void check_data_for(h2_mplx *m, h2_stream *stream, int lock); static void stream_output_consumed(void *ctx, h2_bucket_beam *beam, apr_off_t length) { - h2_task *task = ctx; + h2_stream *stream = ctx; + h2_task *task = stream->task; + if (length > 0 && task && task->assigned) { h2_req_engine_out_consumed(task->assigned, task->c, length); } } -static void stream_input_consumed(void *ctx, - h2_bucket_beam *beam, apr_off_t length) +static void stream_input_ev(void *ctx, h2_bucket_beam *beam) { - h2_mplx *m = ctx; - if (m->input_consumed && length) { - m->input_consumed(m->input_consumed_ctx, beam->id, length); - } + h2_stream *stream = ctx; + h2_mplx *m = stream->session->mplx; + apr_atomic_set32(&m->event_pending, 1); } -static int can_beam_file(void *ctx, h2_bucket_beam *beam, apr_file_t *file) +static void stream_input_consumed(void *ctx, h2_bucket_beam *beam, apr_off_t length) { - h2_mplx *m = ctx; - if (m->tx_handles_reserved > 0) { - --m->tx_handles_reserved; - ap_log_cerror(APLOG_MARK, APLOG_TRACE3, 0, m->c, - "h2_mplx(%ld-%d): beaming file %s, tx_avail %d", - m->id, beam->id, beam->tag, m->tx_handles_reserved); - return 1; - } - ap_log_cerror(APLOG_MARK, APLOG_TRACE3, 0, m->c, - "h2_mplx(%ld-%d): can_beam_file denied on %s", - m->id, beam->id, beam->tag); - return 0; + h2_stream_in_consumed(ctx, length); } -static void have_out_data_for(h2_mplx *m, int stream_id); -static void task_destroy(h2_mplx *m, h2_task *task, int called_from_master); - -static void check_tx_reservation(h2_mplx *m) +static void stream_joined(h2_mplx *m, h2_stream *stream) { - if (m->tx_handles_reserved <= 0) { - m->tx_handles_reserved += h2_workers_tx_reserve(m->workers, - H2MIN(m->tx_chunk_size, h2_ihash_count(m->tasks))); - } + ap_assert(!stream->task || stream->task->worker_done); + + h2_ihash_remove(m->shold, stream->id); + h2_ihash_add(m->spurge, stream); } -static void check_tx_free(h2_mplx *m) +static void stream_cleanup(h2_mplx *m, h2_stream *stream) { - if (m->tx_handles_reserved > m->tx_chunk_size) { - apr_size_t count = m->tx_handles_reserved - m->tx_chunk_size; - m->tx_handles_reserved = m->tx_chunk_size; - h2_workers_tx_free(m->workers, count); - } - else if (m->tx_handles_reserved && h2_ihash_empty(m->tasks)) { - h2_workers_tx_free(m->workers, m->tx_handles_reserved); - m->tx_handles_reserved = 0; - } -} + ap_assert(stream->state == H2_SS_CLEANUP); -static int purge_stream(void *ctx, void *val) -{ - h2_mplx *m = ctx; - h2_stream *stream = val; - h2_task *task = h2_ihash_get(m->tasks, stream->id); - h2_ihash_remove(m->spurge, stream->id); - h2_stream_destroy(stream); - if (task) { - task_destroy(m, task, 1); + if (stream->input) { + h2_beam_on_consumed(stream->input, NULL, NULL, NULL); + h2_beam_abort(stream->input); } - return 0; -} - -static void purge_streams(h2_mplx *m) -{ - if (!h2_ihash_empty(m->spurge)) { - while(!h2_ihash_iter(m->spurge, purge_stream, m)) { - /* repeat until empty */ - } - h2_ihash_clear(m->spurge); + if (stream->output) { + h2_beam_on_produced(stream->output, NULL, NULL); + h2_beam_leave(stream->output); } -} + + h2_stream_cleanup(stream); -static void h2_mplx_destroy(h2_mplx *m) -{ - AP_DEBUG_ASSERT(m); - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, - "h2_mplx(%ld): destroy, tasks=%d", - m->id, (int)h2_ihash_count(m->tasks)); - check_tx_free(m); - if (m->pool) { - apr_pool_destroy(m->pool); + h2_ihash_remove(m->streams, stream->id); + h2_iq_remove(m->q, stream->id); + h2_ififo_remove(m->readyq, stream->id); + h2_ihash_add(m->shold, stream); + + if (!stream->task || stream->task->worker_done) { + stream_joined(m, stream); + } + else if (stream->task) { + stream->task->c->aborted = 1; + apr_thread_cond_broadcast(m->task_thawed); } } @@ -240,66 +152,83 @@ static void h2_mplx_destroy(h2_mplx *m) */ h2_mplx *h2_mplx_create(conn_rec *c, apr_pool_t *parent, const h2_config *conf, - apr_interval_time_t stream_timeout, h2_workers *workers) { apr_status_t status = APR_SUCCESS; - apr_allocator_t *allocator = NULL; + apr_allocator_t *allocator; + apr_thread_mutex_t *mutex; h2_mplx *m; - AP_DEBUG_ASSERT(conf); + h2_ctx *ctx = h2_ctx_get(c, 0); + ap_assert(conf); - status = apr_allocator_create(&allocator); - if (status != APR_SUCCESS) { - return NULL; - } - m = apr_pcalloc(parent, sizeof(h2_mplx)); if (m) { m->id = c->id; - APR_RING_ELEM_INIT(m, link); m->c = c; + m->s = (ctx? h2_ctx_server_get(ctx) : NULL); + if (!m->s) { + m->s = c->base_server; + } + + /* We create a pool with its own allocator to be used for + * processing slave connections. This is the only way to have the + * processing independant of its parent pool in the sense that it + * can work in another thread. Also, the new allocator needs its own + * mutex to synchronize sub-pools. + */ + status = apr_allocator_create(&allocator); + if (status != APR_SUCCESS) { + return NULL; + } + apr_allocator_max_free_set(allocator, ap_max_mem_free); apr_pool_create_ex(&m->pool, parent, NULL, allocator); if (!m->pool) { + apr_allocator_destroy(allocator); return NULL; } apr_pool_tag(m->pool, "h2_mplx"); apr_allocator_owner_set(allocator, m->pool); - + status = apr_thread_mutex_create(&mutex, APR_THREAD_MUTEX_DEFAULT, + m->pool); + if (status != APR_SUCCESS) { + apr_pool_destroy(m->pool); + return NULL; + } + apr_allocator_mutex_set(allocator, mutex); + status = apr_thread_mutex_create(&m->lock, APR_THREAD_MUTEX_DEFAULT, m->pool); if (status != APR_SUCCESS) { - h2_mplx_destroy(m); + apr_pool_destroy(m->pool); return NULL; } status = apr_thread_cond_create(&m->task_thawed, m->pool); if (status != APR_SUCCESS) { - h2_mplx_destroy(m); + apr_pool_destroy(m->pool); return NULL; } - m->bucket_alloc = apr_bucket_alloc_create(m->pool); m->max_streams = h2_config_geti(conf, H2_CONF_MAX_STREAMS); m->stream_max_mem = h2_config_geti(conf, H2_CONF_STREAM_MAX_MEM); m->streams = h2_ihash_create(m->pool, offsetof(h2_stream,id)); + m->sredo = h2_ihash_create(m->pool, offsetof(h2_stream,id)); m->shold = h2_ihash_create(m->pool, offsetof(h2_stream,id)); m->spurge = h2_ihash_create(m->pool, offsetof(h2_stream,id)); m->q = h2_iq_create(m->pool, m->max_streams); - m->sready = h2_ihash_create(m->pool, offsetof(h2_stream,id)); - m->sresume = h2_ihash_create(m->pool, offsetof(h2_stream,id)); - m->tasks = h2_ihash_create(m->pool, offsetof(h2_task,stream_id)); - m->stream_timeout = stream_timeout; + status = h2_ififo_set_create(&m->readyq, m->pool, m->max_streams); + if (status != APR_SUCCESS) { + apr_pool_destroy(m->pool); + return NULL; + } + m->workers = workers; - m->workers_max = workers->max_workers; - m->workers_def_limit = 4; - m->workers_limit = m->workers_def_limit; + m->max_active = workers->max_workers; + m->limit_active = 6; /* the original h1 max parallel connections */ m->last_limit_change = m->last_idle_block = apr_time_now(); - m->limit_change_interval = apr_time_from_msec(200); - - m->tx_handles_reserved = 0; - m->tx_chunk_size = 4; + m->limit_change_interval = apr_time_from_msec(100); m->spare_slaves = apr_array_make(m->pool, 10, sizeof(conn_rec*)); @@ -310,411 +239,330 @@ h2_mplx *h2_mplx_create(conn_rec *c, apr return m; } -apr_uint32_t h2_mplx_shutdown(h2_mplx *m) +int h2_mplx_shutdown(h2_mplx *m) { - int acquired, max_stream_started = 0; + int max_stream_started = 0; - if (enter_mutex(m, &acquired) == APR_SUCCESS) { - max_stream_started = m->max_stream_started; - /* Clear schedule queue, disabling existing streams from starting */ - h2_iq_clear(m->q); - leave_mutex(m, acquired); - } + H2_MPLX_ENTER(m); + + max_stream_started = m->max_stream_started; + /* Clear schedule queue, disabling existing streams from starting */ + h2_iq_clear(m->q); + + H2_MPLX_LEAVE(m); return max_stream_started; } -static void input_consumed_signal(h2_mplx *m, h2_stream *stream) +static int input_consumed_signal(h2_mplx *m, h2_stream *stream) { - if (stream->input && stream->started) { - h2_beam_send(stream->input, NULL, 0); /* trigger updates */ + if (stream->input) { + return h2_beam_report_consumption(stream->input); } + return 0; +} + +static int report_consumption_iter(void *ctx, void *val) +{ + h2_stream *stream = val; + h2_mplx *m = ctx; + + input_consumed_signal(m, stream); + if (stream->state == H2_SS_CLOSED_L + && (!stream->task || stream->task->worker_done)) { + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, m->c, + H2_STRM_LOG(APLOGNO(10026), stream, "remote close missing")); + nghttp2_submit_rst_stream(stream->session->ngh2, NGHTTP2_FLAG_NONE, + stream->id, NGHTTP2_NO_ERROR); + } + return 1; } static int output_consumed_signal(h2_mplx *m, h2_task *task) { - if (task->output.beam && task->worker_started && task->assigned) { - /* trigger updates */ - h2_beam_send(task->output.beam, NULL, APR_NONBLOCK_READ); + if (task->output.beam) { + return h2_beam_report_consumption(task->output.beam); } return 0; } - -static void task_destroy(h2_mplx *m, h2_task *task, int called_from_master) +static void task_destroy(h2_mplx *m, h2_task *task) { conn_rec *slave = NULL; int reuse_slave = 0; - apr_status_t status; - - ap_log_cerror(APLOG_MARK, APLOG_TRACE3, 0, m->c, - "h2_task(%s): destroy", task->id); - if (called_from_master) { - /* Process outstanding events before destruction */ - h2_stream *stream = h2_ihash_get(m->streams, task->stream_id); - if (stream) { - input_consumed_signal(m, stream); - } - } - - /* The pool is cleared/destroyed which also closes all - * allocated file handles. Give this count back to our - * file handle pool. */ - if (task->output.beam) { - m->tx_handles_reserved += - h2_beam_get_files_beamed(task->output.beam); - h2_beam_on_produced(task->output.beam, NULL, NULL); - status = h2_beam_shutdown(task->output.beam, APR_NONBLOCK_READ, 1); - if (status != APR_SUCCESS){ - ap_log_cerror(APLOG_MARK, APLOG_WARNING, status, m->c, - APLOGNO(03385) "h2_task(%s): output shutdown " - "incomplete", task->id); - } - } slave = task->c; - reuse_slave = ((m->spare_slaves->nelts < m->spare_slaves->nalloc) - && !task->rst_error); - - h2_ihash_remove(m->tasks, task->stream_id); - if (m->redo_tasks) { - h2_ihash_remove(m->redo_tasks, task->stream_id); - } - h2_task_destroy(task); + if (m->s->keep_alive_max == 0 || slave->keepalives < m->s->keep_alive_max) { + reuse_slave = ((m->spare_slaves->nelts < (m->limit_active * 3 / 2)) + && !task->rst_error); + } + if (slave) { if (reuse_slave && slave->keepalive == AP_CONN_KEEPALIVE) { + h2_beam_log(task->output.beam, m->c, APLOG_DEBUG, + APLOGNO(03385) "h2_task_destroy, reuse slave"); + h2_task_destroy(task); APR_ARRAY_PUSH(m->spare_slaves, conn_rec*) = slave; } else { + h2_beam_log(task->output.beam, m->c, APLOG_TRACE1, + "h2_task_destroy, destroy slave"); slave->sbh = NULL; - h2_slave_destroy(slave, NULL); + h2_slave_destroy(slave); } } - - check_tx_free(m); } -static void stream_done(h2_mplx *m, h2_stream *stream, int rst_error) -{ - h2_task *task; +static int stream_destroy_iter(void *ctx, void *val) +{ + h2_mplx *m = ctx; + h2_stream *stream = val; + + h2_ihash_remove(m->spurge, stream->id); + ap_assert(stream->state == H2_SS_CLEANUP); - ap_log_cerror(APLOG_MARK, APLOG_TRACE3, 0, m->c, - "h2_stream(%ld-%d): done", m->c->id, stream->id); - /* Situation: we are, on the master connection, done with processing - * the stream. Either we have handled it successfully, or the stream - * was reset by the client or the connection is gone and we are - * shutting down the whole session. - * - * We possibly have created a task for this stream to be processed - * on a slave connection. The processing might actually be ongoing - * right now or has already finished. A finished task waits for its - * stream to be done. This is the common case. - * - * If the stream had input (e.g. the request had a body), a task - * may have read, or is still reading buckets from the input beam. - * This means that the task is referencing memory from the stream's - * pool (or the master connection bucket alloc). Before we can free - * the stream pool, we need to make sure that those references are - * gone. This is what h2_beam_shutdown() on the input waits for. - * - * With the input handled, we can tear down that beam and care - * about the output beam. The stream might still have buffered some - * buckets read from the output, so we need to get rid of those. That - * is done by h2_stream_cleanup(). - * - * Now it is save to destroy the task (if it exists and is finished). - * - * FIXME: we currently destroy the stream, even if the task is still - * ongoing. This is not ok, since task->request is coming from stream - * memory. We should either copy it on task creation or wait with the - * stream destruction until the task is done. - */ - h2_iq_remove(m->q, stream->id); - h2_ihash_remove(m->sready, stream->id); - h2_ihash_remove(m->sresume, stream->id); - h2_ihash_remove(m->streams, stream->id); if (stream->input) { - m->tx_handles_reserved += h2_beam_get_files_beamed(stream->input); - h2_beam_on_consumed(stream->input, NULL, NULL); - /* Let anyone blocked reading know that there is no more to come */ - h2_beam_abort(stream->input); - /* Remove mutex after, so that abort still finds cond to signal */ - h2_beam_mutex_set(stream->input, NULL, NULL, NULL); + /* Process outstanding events before destruction */ + input_consumed_signal(m, stream); + h2_beam_log(stream->input, m->c, APLOG_TRACE2, "stream_destroy"); + h2_beam_destroy(stream->input); + stream->input = NULL; } - h2_stream_cleanup(stream); - task = h2_ihash_get(m->tasks, stream->id); - if (task) { - if (!task->worker_done) { - /* task still running, cleanup once it is done */ - if (rst_error) { - h2_task_rst(task, rst_error); - } - h2_ihash_add(m->shold, stream); - return; - } - else { - /* already finished */ - task_destroy(m, task, 0); - } + if (stream->task) { + task_destroy(m, stream->task); + stream->task = NULL; } h2_stream_destroy(stream); + return 0; } -static int stream_done_iter(void *ctx, void *val) +static void purge_streams(h2_mplx *m, int lock) { - stream_done((h2_mplx*)ctx, val, 0); - return 0; + if (!h2_ihash_empty(m->spurge)) { + H2_MPLX_ENTER_MAYBE(m, lock); + while (!h2_ihash_iter(m->spurge, stream_destroy_iter, m)) { + /* repeat until empty */ + } + H2_MPLX_LEAVE_MAYBE(m, lock); + } } -static int task_print(void *ctx, void *val) +typedef struct { + h2_mplx_stream_cb *cb; + void *ctx; +} stream_iter_ctx_t; + +static int stream_iter_wrap(void *ctx, void *stream) { - h2_mplx *m = ctx; - h2_task *task = val; + stream_iter_ctx_t *x = ctx; + return x->cb(stream, x->ctx); +} + +apr_status_t h2_mplx_stream_do(h2_mplx *m, h2_mplx_stream_cb *cb, void *ctx) +{ + stream_iter_ctx_t x; + + H2_MPLX_ENTER(m); - if (task && task->request) { - h2_stream *stream = h2_ihash_get(m->streams, task->stream_id); + x.cb = cb; + x.ctx = ctx; + h2_ihash_iter(m->streams, stream_iter_wrap, &x); + + H2_MPLX_LEAVE(m); + return APR_SUCCESS; +} - ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, m->c, /* NO APLOGNO */ - "->03198: h2_stream(%s): %s %s %s -> %s %d" - "[orph=%d/started=%d/done=%d]", - task->id, task->request->method, - task->request->authority, task->request->path, - task->response? "http" : (task->rst_error? "reset" : "?"), - task->response? task->response->http_status : task->rst_error, - (stream? 0 : 1), task->worker_started, - task->worker_done); - } - else if (task) { - ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, m->c, /* NO APLOGNO */ - "->03198: h2_stream(%ld-%d): NULL", m->id, task->stream_id); +static int report_stream_iter(void *ctx, void *val) { + h2_mplx *m = ctx; + h2_stream *stream = val; + h2_task *task = stream->task; + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, + H2_STRM_MSG(stream, "started=%d, scheduled=%d, ready=%d, " + "out_buffer=%ld"), + !!stream->task, stream->scheduled, h2_stream_is_ready(stream), + (long)h2_beam_get_buffered(stream->output)); + if (task) { + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, m->c, /* NO APLOGNO */ + H2_STRM_MSG(stream, "->03198: %s %s %s" + "[started=%d/done=%d/frozen=%d]"), + task->request->method, task->request->authority, + task->request->path, task->worker_started, + task->worker_done, task->frozen); } else { - ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, m->c, /* NO APLOGNO */ - "->03198: h2_stream(%ld-NULL): NULL", m->id); + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, m->c, /* NO APLOGNO */ + H2_STRM_MSG(stream, "->03198: no task")); } return 1; } -static int task_abort_connection(void *ctx, void *val) -{ - h2_task *task = val; - if (task->c) { - task->c->aborted = 1; - } - if (task->input.beam) { - h2_beam_abort(task->input.beam); - } - if (task->output.beam) { - h2_beam_abort(task->output.beam); - } +static int unexpected_stream_iter(void *ctx, void *val) { + h2_mplx *m = ctx; + h2_stream *stream = val; + ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, m->c, /* NO APLOGNO */ + H2_STRM_MSG(stream, "unexpected, started=%d, scheduled=%d, ready=%d"), + !!stream->task, stream->scheduled, h2_stream_is_ready(stream)); return 1; } -static int report_stream_iter(void *ctx, void *val) { +static int stream_cancel_iter(void *ctx, void *val) { h2_mplx *m = ctx; h2_stream *stream = val; - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, - "h2_mplx(%ld-%d): exists, started=%d, scheduled=%d, " - "submitted=%d, suspended=%d", - m->id, stream->id, stream->started, stream->scheduled, - stream->submitted, stream->suspended); - return 1; + + /* disabled input consumed reporting */ + if (stream->input) { + h2_beam_on_consumed(stream->input, NULL, NULL, NULL); + } + /* take over event monitoring */ + h2_stream_set_monitor(stream, NULL); + /* Reset, should transit to CLOSED state */ + h2_stream_rst(stream, H2_ERR_NO_ERROR); + /* All connection data has been sent, simulate cleanup */ + h2_stream_dispatch(stream, H2_SEV_EOS_SENT); + stream_cleanup(m, stream); + return 0; } -apr_status_t h2_mplx_release_and_join(h2_mplx *m, apr_thread_cond_t *wait) +void h2_mplx_release_and_join(h2_mplx *m, apr_thread_cond_t *wait) { apr_status_t status; - int acquired; + int i, wait_secs = 60; + /* How to shut down a h2 connection: + * 0. abort and tell the workers that no more tasks will come from us */ + m->aborted = 1; h2_workers_unregister(m->workers, m); - if ((status = enter_mutex(m, &acquired)) == APR_SUCCESS) { - int i, wait_secs = 5; + H2_MPLX_ENTER_ALWAYS(m); - if (!h2_ihash_empty(m->streams) && APLOGctrace1(m->c)) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, - "h2_mplx(%ld): release_join with %d streams open, " - "%d streams resume, %d streams ready, %d tasks", - m->id, (int)h2_ihash_count(m->streams), - (int)h2_ihash_count(m->sresume), - (int)h2_ihash_count(m->sready), - (int)h2_ihash_count(m->tasks)); - h2_ihash_iter(m->streams, report_stream_iter, m); - } - - /* disable WINDOW_UPDATE callbacks */ - h2_mplx_set_consumed_cb(m, NULL, NULL); - - if (!h2_ihash_empty(m->shold)) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c, - "h2_mplx(%ld): start release_join with %d streams in hold", - m->id, (int)h2_ihash_count(m->shold)); - } - if (!h2_ihash_empty(m->spurge)) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c, - "h2_mplx(%ld): start release_join with %d streams to purge", - m->id, (int)h2_ihash_count(m->spurge)); - } - - h2_iq_clear(m->q); - apr_thread_cond_broadcast(m->task_thawed); - while (!h2_ihash_iter(m->streams, stream_done_iter, m)) { - /* iterate until all streams have been removed */ - } - AP_DEBUG_ASSERT(h2_ihash_empty(m->streams)); - - if (!h2_ihash_empty(m->shold)) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c, - "h2_mplx(%ld): 2. release_join with %d streams in hold", - m->id, (int)h2_ihash_count(m->shold)); - } - if (!h2_ihash_empty(m->spurge)) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c, - "h2_mplx(%ld): 2. release_join with %d streams to purge", - m->id, (int)h2_ihash_count(m->spurge)); - } - - /* If we still have busy workers, we cannot release our memory - * pool yet, as tasks have references to us. - * Any operation on the task slave connection will from now on - * be errored ECONNRESET/ABORTED, so processing them should fail - * and workers *should* return in a timely fashion. - */ - for (i = 0; m->workers_busy > 0; ++i) { - h2_ihash_iter(m->tasks, task_abort_connection, m); - - m->join_wait = wait; - status = apr_thread_cond_timedwait(wait, m->lock, apr_time_from_sec(wait_secs)); - - if (APR_STATUS_IS_TIMEUP(status)) { - if (i > 0) { - /* Oh, oh. Still we wait for assigned workers to report that - * they are done. Unless we have a bug, a worker seems to be hanging. - * If we exit now, all will be deallocated and the worker, once - * it does return, will walk all over freed memory... - */ - ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, m->c, APLOGNO(03198) - "h2_mplx(%ld): release, waiting for %d seconds now for " - "%d h2_workers to return, have still %d tasks outstanding", - m->id, i*wait_secs, m->workers_busy, - (int)h2_ihash_count(m->tasks)); - if (i == 1) { - h2_ihash_iter(m->tasks, task_print, m); - } - } - h2_mplx_abort(m); - apr_thread_cond_broadcast(m->task_thawed); - } - } - - AP_DEBUG_ASSERT(h2_ihash_empty(m->shold)); - if (!h2_ihash_empty(m->spurge)) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c, - "h2_mplx(%ld): 3. release_join %d streams to purge", - m->id, (int)h2_ihash_count(m->spurge)); - purge_streams(m); - } - AP_DEBUG_ASSERT(h2_ihash_empty(m->spurge)); - - if (!h2_ihash_empty(m->tasks)) { - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, m->c, APLOGNO(03056) - "h2_mplx(%ld): release_join -> destroy, " - "%d tasks still present", - m->id, (int)h2_ihash_count(m->tasks)); - } - leave_mutex(m, acquired); - h2_mplx_destroy(m); - /* all gone */ + /* How to shut down a h2 connection: + * 1. cancel all streams still active */ + while (!h2_ihash_iter(m->streams, stream_cancel_iter, m)) { + /* until empty */ + } + + /* 2. terminate ngn_shed, no more streams + * should be scheduled or in the active set */ + h2_ngn_shed_abort(m->ngn_shed); + ap_assert(h2_ihash_empty(m->streams)); + ap_assert(h2_iq_empty(m->q)); + + /* 3. while workers are busy on this connection, meaning they + * are processing tasks from this connection, wait on them finishing + * in order to wake us and let us check again. + * Eventually, this has to succeed. */ + m->join_wait = wait; + for (i = 0; h2_ihash_count(m->shold) > 0; ++i) { + status = apr_thread_cond_timedwait(wait, m->lock, apr_time_from_sec(wait_secs)); + + if (APR_STATUS_IS_TIMEUP(status)) { + /* This can happen if we have very long running requests + * that do not time out on IO. */ + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, m->c, APLOGNO(03198) + "h2_mplx(%ld): waited %d sec for %d tasks", + m->id, i*wait_secs, (int)h2_ihash_count(m->shold)); + h2_ihash_iter(m->shold, report_stream_iter, m); + } + } + m->join_wait = NULL; + + /* 4. close the h2_req_enginge shed */ + h2_ngn_shed_destroy(m->ngn_shed); + m->ngn_shed = NULL; + + /* 4. With all workers done, all streams should be in spurge */ + if (!h2_ihash_empty(m->shold)) { + ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, m->c, APLOGNO(03516) + "h2_mplx(%ld): unexpected %d streams in hold", + m->id, (int)h2_ihash_count(m->shold)); + h2_ihash_iter(m->shold, unexpected_stream_iter, m); } - return status; + + H2_MPLX_LEAVE(m); + + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, + "h2_mplx(%ld): released", m->id); } -void h2_mplx_abort(h2_mplx *m) +apr_status_t h2_mplx_stream_cleanup(h2_mplx *m, h2_stream *stream) { - int acquired; + H2_MPLX_ENTER(m); - AP_DEBUG_ASSERT(m); - if (!m->aborted && enter_mutex(m, &acquired) == APR_SUCCESS) { - m->aborted = 1; - h2_ngn_shed_abort(m->ngn_shed); - leave_mutex(m, acquired); - } + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c, + H2_STRM_MSG(stream, "cleanup")); + stream_cleanup(m, stream); + + H2_MPLX_LEAVE(m); + return APR_SUCCESS; } -apr_status_t h2_mplx_stream_done(h2_mplx *m, h2_stream *stream) +h2_stream *h2_mplx_stream_get(h2_mplx *m, int id) { - apr_status_t status = APR_SUCCESS; - int acquired; + h2_stream *s = NULL; - AP_DEBUG_ASSERT(m); - if ((status = enter_mutex(m, &acquired)) == APR_SUCCESS) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c, - "h2_mplx(%ld-%d): marking stream as done.", - m->id, stream->id); - stream_done(m, stream, stream->rst_error); - purge_streams(m); - leave_mutex(m, acquired); - } - return status; + H2_MPLX_ENTER_ALWAYS(m); + + s = h2_ihash_get(m->streams, id); + + H2_MPLX_LEAVE(m); + return s; } -void h2_mplx_set_consumed_cb(h2_mplx *m, h2_mplx_consumed_cb *cb, void *ctx) +static void output_produced(void *ctx, h2_bucket_beam *beam, apr_off_t bytes) { - m->input_consumed = cb; - m->input_consumed_ctx = ctx; + h2_stream *stream = ctx; + h2_mplx *m = stream->session->mplx; + + check_data_for(m, stream, 1); } -static apr_status_t out_open(h2_mplx *m, int stream_id, h2_response *response) +static apr_status_t out_open(h2_mplx *m, int stream_id, h2_bucket_beam *beam) { apr_status_t status = APR_SUCCESS; - h2_task *task = h2_ihash_get(m->tasks, stream_id); h2_stream *stream = h2_ihash_get(m->streams, stream_id); - if (!task || !stream) { + if (!stream || !stream->task || m->aborted) { return APR_ECONNABORTED; } - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, - "h2_mplx(%s): open response: %d, rst=%d", - task->id, response->http_status, response->rst_error); - - h2_task_set_response(task, response); + ap_assert(stream->output == NULL); + stream->output = beam; - if (task->output.beam) { - h2_beam_buffer_size_set(task->output.beam, m->stream_max_mem); - h2_beam_timeout_set(task->output.beam, m->stream_timeout); - h2_beam_on_consumed(task->output.beam, stream_output_consumed, task); - m->tx_handles_reserved -= h2_beam_get_files_beamed(task->output.beam); - h2_beam_on_file_beam(task->output.beam, can_beam_file, m); - h2_beam_mutex_set(task->output.beam, beam_enter, task->cond, m); + if (APLOGctrace2(m->c)) { + h2_beam_log(beam, m->c, APLOG_TRACE2, "out_open"); + } + else { + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, m->c, + "h2_mplx(%s): out open", stream->task->id); } - h2_ihash_add(m->sready, stream); - if (response && response->http_status < 300) { - /* we might see some file buckets in the output, see - * if we have enough handles reserved. */ - check_tx_reservation(m); + h2_beam_on_consumed(stream->output, NULL, stream_output_consumed, stream); + h2_beam_on_produced(stream->output, output_produced, stream); + if (stream->task->output.copy_files) { + h2_beam_on_file_beam(stream->output, h2_beam_no_files, NULL); } - have_out_data_for(m, stream_id); + + /* we might see some file buckets in the output, see + * if we have enough handles reserved. */ + check_data_for(m, stream, 0); return status; } -apr_status_t h2_mplx_out_open(h2_mplx *m, int stream_id, h2_response *response) +apr_status_t h2_mplx_out_open(h2_mplx *m, int stream_id, h2_bucket_beam *beam) { apr_status_t status; - int acquired; - AP_DEBUG_ASSERT(m); - if ((status = enter_mutex(m, &acquired)) == APR_SUCCESS) { - if (m->aborted) { - status = APR_ECONNABORTED; - } - else { - status = out_open(m, stream_id, response); - } - leave_mutex(m, acquired); + H2_MPLX_ENTER(m); + + if (m->aborted) { + status = APR_ECONNABORTED; } + else { + status = out_open(m, stream_id, beam); + } + + H2_MPLX_LEAVE(m); return status; } @@ -726,31 +574,21 @@ static apr_status_t out_close(h2_mplx *m if (!task) { return APR_ECONNABORTED; } - + if (task->c) { + ++task->c->keepalives; + } + stream = h2_ihash_get(m->streams, task->stream_id); if (!stream) { return APR_ECONNABORTED; } - if (!task->response && !task->rst_error) { - /* In case a close comes before a response was created, - * insert an error one so that our streams can properly reset. - */ - h2_response *r = h2_response_die(task->stream_id, 500, - task->request, m->pool); - status = out_open(m, task->stream_id, r); - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, m->c, APLOGNO(03393) - "h2_mplx(%s): close, no response, no rst", task->id); - } ap_log_cerror(APLOG_MARK, APLOG_TRACE2, status, m->c, "h2_mplx(%s): close", task->id); - if (task->output.beam) { - status = h2_beam_close(task->output.beam); - h2_beam_log(task->output.beam, task->stream_id, "out_close", m->c, - APLOG_TRACE2); - } + status = h2_beam_close(task->output.beam); + h2_beam_log(task->output.beam, m->c, APLOG_TRACE2, "out_close"); output_consumed_signal(m, task); - have_out_data_for(m, task->stream_id); + check_data_for(m, stream, 0); return status; } @@ -758,313 +596,305 @@ apr_status_t h2_mplx_out_trywait(h2_mplx apr_thread_cond_t *iowait) { apr_status_t status; - int acquired; - AP_DEBUG_ASSERT(m); - if ((status = enter_mutex(m, &acquired)) == APR_SUCCESS) { - if (m->aborted) { - status = APR_ECONNABORTED; - } - else if (!h2_ihash_empty(m->sready) || !h2_ihash_empty(m->sresume)) { - status = APR_SUCCESS; - } - else { - purge_streams(m); - m->added_output = iowait; - status = apr_thread_cond_timedwait(m->added_output, m->lock, timeout); - if (APLOGctrace2(m->c)) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c, - "h2_mplx(%ld): trywait on data for %f ms)", - m->id, timeout/1000.0); - } - m->added_output = NULL; + H2_MPLX_ENTER(m); + + if (m->aborted) { + status = APR_ECONNABORTED; + } + else if (h2_mplx_has_master_events(m)) { + status = APR_SUCCESS; + } + else { + purge_streams(m, 0); + h2_ihash_iter(m->streams, report_consumption_iter, m); + m->added_output = iowait; + status = apr_thread_cond_timedwait(m->added_output, m->lock, timeout); + if (APLOGctrace2(m->c)) { + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c, + "h2_mplx(%ld): trywait on data for %f ms)", + m->id, timeout/1000.0); } - leave_mutex(m, acquired); + m->added_output = NULL; } + + H2_MPLX_LEAVE(m); return status; } -static void have_out_data_for(h2_mplx *m, int stream_id) +static void check_data_for(h2_mplx *m, h2_stream *stream, int lock) { - (void)stream_id; - AP_DEBUG_ASSERT(m); - if (m->added_output) { - apr_thread_cond_signal(m->added_output); + if (h2_ififo_push(m->readyq, stream->id) == APR_SUCCESS) { + apr_atomic_set32(&m->event_pending, 1); + H2_MPLX_ENTER_MAYBE(m, lock); + if (m->added_output) { + apr_thread_cond_signal(m->added_output); + } + H2_MPLX_LEAVE_MAYBE(m, lock); } } apr_status_t h2_mplx_reprioritize(h2_mplx *m, h2_stream_pri_cmp *cmp, void *ctx) { apr_status_t status; - int acquired; - AP_DEBUG_ASSERT(m); - if ((status = enter_mutex(m, &acquired)) == APR_SUCCESS) { - if (m->aborted) { - status = APR_ECONNABORTED; + H2_MPLX_ENTER(m); + + if (m->aborted) { + status = APR_ECONNABORTED; + } + else { + h2_iq_sort(m->q, cmp, ctx); + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, + "h2_mplx(%ld): reprioritize tasks", m->id); + status = APR_SUCCESS; + } + + H2_MPLX_LEAVE(m); + return status; +} + +static void register_if_needed(h2_mplx *m) +{ + if (!m->aborted && !m->is_registered && !h2_iq_empty(m->q)) { + apr_status_t status = h2_workers_register(m->workers, m); + if (status == APR_SUCCESS) { + m->is_registered = 1; } else { - h2_iq_sort(m->q, cmp, ctx); - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, - "h2_mplx(%ld): reprioritize tasks", m->id); + ap_log_cerror(APLOG_MARK, APLOG_ERR, status, m->c, APLOGNO(10021) + "h2_mplx(%ld): register at workers", m->id); } - leave_mutex(m, acquired); } - return status; } apr_status_t h2_mplx_process(h2_mplx *m, struct h2_stream *stream, h2_stream_pri_cmp *cmp, void *ctx) { apr_status_t status; - int do_registration = 0; - int acquired; - AP_DEBUG_ASSERT(m); - if ((status = enter_mutex(m, &acquired)) == APR_SUCCESS) { - if (m->aborted) { - status = APR_ECONNABORTED; + H2_MPLX_ENTER(m); + + if (m->aborted) { + status = APR_ECONNABORTED; + } + else { + status = APR_SUCCESS; + h2_ihash_add(m->streams, stream); + if (h2_stream_is_ready(stream)) { + /* already have a response */ + check_data_for(m, stream, 0); + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, + H2_STRM_MSG(stream, "process, add to readyq")); } else { - h2_ihash_add(m->streams, stream); - if (stream->response) { - /* already have a respone, schedule for submit */ - h2_ihash_add(m->sready, stream); - } - else { - h2_beam_create(&stream->input, stream->pool, stream->id, - "input", 0); - if (!m->need_registration) { - m->need_registration = h2_iq_empty(m->q); - } - if (m->workers_busy < m->workers_max) { - do_registration = m->need_registration; - } - h2_iq_add(m->q, stream->id, cmp, ctx); - - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, m->c, - "h2_mplx(%ld-%d): process, body=%d", - m->c->id, stream->id, stream->request->body); - } + h2_iq_add(m->q, stream->id, cmp, ctx); + register_if_needed(m); + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, + H2_STRM_MSG(stream, "process, added to q")); } - leave_mutex(m, acquired); - } - if (do_registration) { - m->need_registration = 0; - h2_workers_register(m->workers, m); } + + H2_MPLX_LEAVE(m); return status; } -static h2_task *pop_task(h2_mplx *m) +static h2_task *next_stream_task(h2_mplx *m) { - h2_task *task = NULL; h2_stream *stream; int sid; - while (!m->aborted && !task && (m->workers_busy < m->workers_limit) + while (!m->aborted && (m->tasks_active < m->limit_active) && (sid = h2_iq_shift(m->q)) > 0) { stream = h2_ihash_get(m->streams, sid); if (stream) { conn_rec *slave, **pslave; - int new_conn = 0; pslave = (conn_rec **)apr_array_pop(m->spare_slaves); if (pslave) { slave = *pslave; + slave->aborted = 0; } else { - slave = h2_slave_create(m->c, m->pool, NULL); - new_conn = 1; + slave = h2_slave_create(m->c, stream->id, m->pool); } - slave->sbh = m->c->sbh; - slave->aborted = 0; - task = h2_task_create(slave, stream->request, stream->input, m); - h2_ihash_add(m->tasks, task); - - m->c->keepalives++; - apr_table_setn(slave->notes, H2_TASK_ID_NOTE, task->id); - if (new_conn) { - h2_slave_run_pre_connection(slave, ap_get_conn_socket(slave)); - } - stream->started = 1; - task->worker_started = 1; - task->started_at = apr_time_now(); - if (sid > m->max_stream_started) { - m->max_stream_started = sid; - } + if (!stream->task) { - if (stream->input) { - h2_beam_timeout_set(stream->input, m->stream_timeout); - h2_beam_on_consumed(stream->input, stream_input_consumed, m); - h2_beam_on_file_beam(stream->input, can_beam_file, m); - h2_beam_mutex_set(stream->input, beam_enter, task->cond, m); + if (sid > m->max_stream_started) { + m->max_stream_started = sid; + } + if (stream->input) { + h2_beam_on_consumed(stream->input, stream_input_ev, + stream_input_consumed, stream); + } + + stream->task = h2_task_create(slave, stream->id, + stream->request, m, stream->input, + stream->session->s->timeout, + m->stream_max_mem); + if (!stream->task) { + ap_log_cerror(APLOG_MARK, APLOG_ERR, APR_ENOMEM, slave, + H2_STRM_LOG(APLOGNO(02941), stream, + "create task")); + return NULL; + } + } - - ++m->workers_busy; + + ++m->tasks_active; + return stream->task; } } - return task; + return NULL; } -h2_task *h2_mplx_pop_task(h2_mplx *m, int *has_more) +apr_status_t h2_mplx_pop_task(h2_mplx *m, h2_task **ptask) { - h2_task *task = NULL; - apr_status_t status; - int acquired; + apr_status_t rv = APR_EOF; - AP_DEBUG_ASSERT(m); - if ((status = enter_mutex(m, &acquired)) == APR_SUCCESS) { - if (m->aborted) { - *has_more = 0; - } - else { - task = pop_task(m); - *has_more = !h2_iq_empty(m->q); - } - - if (has_more && !task) { - m->need_registration = 1; - } - leave_mutex(m, acquired); + *ptask = NULL; + if (APR_SUCCESS != (rv = apr_thread_mutex_lock(m->lock))) { + return rv; + } + + if (m->aborted) { + rv = APR_EOF; } - return task; + else { + *ptask = next_stream_task(m); + rv = (*ptask != NULL && !h2_iq_empty(m->q))? APR_EAGAIN : APR_SUCCESS; + } + if (APR_EAGAIN != rv) { + m->is_registered = 0; /* h2_workers will discard this mplx */ + } + H2_MPLX_LEAVE(m); + return rv; } static void task_done(h2_mplx *m, h2_task *task, h2_req_engine *ngn) { + h2_stream *stream; + if (task->frozen) { /* this task was handed over to an engine for processing * and the original worker has finished. That means the * engine may start processing now. */ h2_task_thaw(task); - /* we do not want the task to block on writing response - * bodies into the mplx. */ - h2_task_set_io_blocking(task, 0); apr_thread_cond_broadcast(m->task_thawed); return; } - else { - h2_stream *stream; - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, - "h2_mplx(%ld): task(%s) done", m->id, task->id); - out_close(m, task); - stream = h2_ihash_get(m->streams, task->stream_id); - - if (ngn) { - apr_off_t bytes = 0; - if (task->output.beam) { - h2_beam_send(task->output.beam, NULL, APR_NONBLOCK_READ); - bytes += h2_beam_get_buffered(task->output.beam); - } - if (bytes > 0) { - /* we need to report consumed and current buffered output - * to the engine. The request will be streamed out or cancelled, - * no more data is coming from it and the engine should update - * its calculations before we destroy this information. */ - h2_req_engine_out_consumed(ngn, task->c, bytes); - } + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, + "h2_mplx(%ld): task(%s) done", m->id, task->id); + out_close(m, task); + + if (ngn) { + apr_off_t bytes = 0; + h2_beam_send(task->output.beam, NULL, APR_NONBLOCK_READ); + bytes += h2_beam_get_buffered(task->output.beam); + if (bytes > 0) { + /* we need to report consumed and current buffered output + * to the engine. The request will be streamed out or cancelled, + * no more data is coming from it and the engine should update + * its calculations before we destroy this information. */ + h2_req_engine_out_consumed(ngn, task->c, bytes); } - - if (task->engine) { - if (!h2_req_engine_is_shutdown(task->engine)) { - ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, m->c, - "h2_mplx(%ld): task(%s) has not-shutdown " - "engine(%s)", m->id, task->id, - h2_req_engine_get_id(task->engine)); - } - h2_ngn_shed_done_ngn(m->ngn_shed, task->engine); + } + + if (task->engine) { + if (!m->aborted && !task->c->aborted + && !h2_req_engine_is_shutdown(task->engine)) { + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, m->c, APLOGNO(10022) + "h2_mplx(%ld): task(%s) has not-shutdown " + "engine(%s)", m->id, task->id, + h2_req_engine_get_id(task->engine)); + } + h2_ngn_shed_done_ngn(m->ngn_shed, task->engine); + } + + task->worker_done = 1; + task->done_at = apr_time_now(); + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c, + "h2_mplx(%s): request done, %f ms elapsed", task->id, + (task->done_at - task->started_at) / 1000.0); + + if (task->started_at > m->last_idle_block) { + /* this task finished without causing an 'idle block', e.g. + * a block by flow control. + */ + if (task->done_at- m->last_limit_change >= m->limit_change_interval + && m->limit_active < m->max_active) { + /* Well behaving stream, allow it more workers */ + m->limit_active = H2MIN(m->limit_active * 2, + m->max_active); + m->last_limit_change = task->done_at; + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, + "h2_mplx(%ld): increase worker limit to %d", + m->id, m->limit_active); } - - if (!m->aborted && stream && m->redo_tasks - && h2_ihash_get(m->redo_tasks, task->stream_id)) { + } + + stream = h2_ihash_get(m->streams, task->stream_id); + if (stream) { + /* stream not done yet. */ + if (!m->aborted && h2_ihash_get(m->sredo, stream->id)) { /* reset and schedule again */ h2_task_redo(task); - h2_ihash_remove(m->redo_tasks, task->stream_id); - h2_iq_add(m->q, task->stream_id, NULL, NULL); - return; - } - - task->worker_done = 1; - task->done_at = apr_time_now(); - if (task->output.beam) { - h2_beam_on_consumed(task->output.beam, NULL, NULL); - h2_beam_mutex_set(task->output.beam, NULL, NULL, NULL); - } - ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c, - "h2_mplx(%s): request done, %f ms elapsed", task->id, - (task->done_at - task->started_at) / 1000.0); - if (task->started_at > m->last_idle_block) { - /* this task finished without causing an 'idle block', e.g. - * a block by flow control. - */ - if (task->done_at- m->last_limit_change >= m->limit_change_interval - && m->workers_limit < m->workers_max) { - /* Well behaving stream, allow it more workers */ - m->workers_limit = H2MIN(m->workers_limit * 2, - m->workers_max); - m->last_limit_change = task->done_at; - m->need_registration = 1; - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, - "h2_mplx(%ld): increase worker limit to %d", - m->id, m->workers_limit); - } - } - - if (stream) { - /* hang around until the stream deregisters */ - ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c, - "h2_mplx(%s): task_done, stream still open", - task->id); - if (h2_stream_is_suspended(stream)) { - /* more data will not arrive, resume the stream */ - h2_ihash_add(m->sresume, stream); - have_out_data_for(m, stream->id); - } + h2_ihash_remove(m->sredo, stream->id); + h2_iq_add(m->q, stream->id, NULL, NULL); } else { - /* stream no longer active, was it placed in hold? */ - stream = h2_ihash_get(m->shold, task->stream_id); - if (stream) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c, - "h2_mplx(%s): task_done, stream in hold", - task->id); - /* We cannot destroy the stream here since this is - * called from a worker thread and freeing memory pools - * is only safe in the only thread using it (and its - * parent pool / allocator) */ - h2_ihash_remove(m->shold, stream->id); - h2_ihash_add(m->spurge, stream); - } - else { - ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c, - "h2_mplx(%s): task_done, stream not found", - task->id); - task_destroy(m, task, 0); - } - - if (m->join_wait) { - apr_thread_cond_signal(m->join_wait); + /* stream not cleaned up, stay around */ + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c, + H2_STRM_MSG(stream, "task_done, stream open")); + if (stream->input) { + h2_beam_leave(stream->input); } + + /* more data will not arrive, resume the stream */ + check_data_for(m, stream, 0); } } + else if ((stream = h2_ihash_get(m->shold, task->stream_id)) != NULL) { + /* stream is done, was just waiting for this. */ + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c, + H2_STRM_MSG(stream, "task_done, in hold")); + if (stream->input) { + h2_beam_leave(stream->input); + } + stream_joined(m, stream); + } + else if ((stream = h2_ihash_get(m->spurge, task->stream_id)) != NULL) { + ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, m->c, + H2_STRM_LOG(APLOGNO(03517), stream, "already in spurge")); + ap_assert("stream should not be in spurge" == NULL); + } + else { + ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, m->c, APLOGNO(03518) + "h2_mplx(%s): task_done, stream not found", + task->id); + ap_assert("stream should still be available" == NULL); + } } void h2_mplx_task_done(h2_mplx *m, h2_task *task, h2_task **ptask) { - int acquired; + H2_MPLX_ENTER_ALWAYS(m); + + task_done(m, task, NULL); + --m->tasks_active; - if (enter_mutex(m, &acquired) == APR_SUCCESS) { - task_done(m, task, NULL); - --m->workers_busy; - if (ptask) { - /* caller wants another task */ - *ptask = pop_task(m); - } - leave_mutex(m, acquired); + if (m->join_wait) { + apr_thread_cond_signal(m->join_wait); + } + if (ptask) { + /* caller wants another task */ + *ptask = next_stream_task(m); } + register_if_needed(m); + + H2_MPLX_LEAVE(m); } /******************************************************************************* @@ -1073,74 +903,76 @@ void h2_mplx_task_done(h2_mplx *m, h2_ta static int latest_repeatable_unsubmitted_iter(void *data, void *val) { - task_iter_ctx *ctx = data; - h2_task *task = val; - if (!task->worker_done && h2_task_can_redo(task) - && !h2_ihash_get(ctx->m->redo_tasks, task->stream_id)) { - /* this task occupies a worker, the response has not been submitted yet, - * not been cancelled and it is a repeatable request - * -> it can be re-scheduled later */ - if (!ctx->task || ctx->task->started_at < task->started_at) { - /* we did not have one or this one was started later */ - ctx->task = task; + stream_iter_ctx *ctx = data; + h2_stream *stream = val; + + if (stream->task && !stream->task->worker_done + && h2_task_can_redo(stream->task) + && !h2_ihash_get(ctx->m->sredo, stream->id)) { + if (!h2_stream_is_ready(stream)) { + /* this task occupies a worker, the response has not been submitted + * yet, not been cancelled and it is a repeatable request + * -> it can be re-scheduled later */ + if (!ctx->stream + || (ctx->stream->task->started_at < stream->task->started_at)) { + /* we did not have one or this one was started later */ + ctx->stream = stream; + } } } return 1; } -static h2_task *get_latest_repeatable_unsubmitted_task(h2_mplx *m) +static h2_stream *get_latest_repeatable_unsubmitted_stream(h2_mplx *m) { - task_iter_ctx ctx; + stream_iter_ctx ctx; ctx.m = m; - ctx.task = NULL; - h2_ihash_iter(m->tasks, latest_repeatable_unsubmitted_iter, &ctx); - return ctx.task; + ctx.stream = NULL; + h2_ihash_iter(m->streams, latest_repeatable_unsubmitted_iter, &ctx); + return ctx.stream; } static int timed_out_busy_iter(void *data, void *val) { - task_iter_ctx *ctx = data; - h2_task *task = val; - if (!task->worker_done - && (ctx->now - task->started_at) > ctx->m->stream_timeout) { + stream_iter_ctx *ctx = data; + h2_stream *stream = val; + if (stream->task && !stream->task->worker_done + && (ctx->now - stream->task->started_at) > stream->task->timeout) { /* timed out stream occupying a worker, found */ - ctx->task = task; + ctx->stream = stream; return 0; } return 1; } -static h2_task *get_timed_out_busy_task(h2_mplx *m) +static h2_stream *get_timed_out_busy_stream(h2_mplx *m) { - task_iter_ctx ctx; + stream_iter_ctx ctx; ctx.m = m; - ctx.task = NULL; + ctx.stream = NULL; ctx.now = apr_time_now(); - h2_ihash_iter(m->tasks, timed_out_busy_iter, &ctx); - return ctx.task; + h2_ihash_iter(m->streams, timed_out_busy_iter, &ctx); + return ctx.stream; } static apr_status_t unschedule_slow_tasks(h2_mplx *m) { - h2_task *task; + h2_stream *stream; int n; - if (!m->redo_tasks) { - m->redo_tasks = h2_ihash_create(m->pool, offsetof(h2_task, stream_id)); - } /* Try to get rid of streams that occupy workers. Look for safe requests * that are repeatable. If none found, fail the connection. */ - n = (m->workers_busy - m->workers_limit - h2_ihash_count(m->redo_tasks)); - while (n > 0 && (task = get_latest_repeatable_unsubmitted_task(m))) { - h2_task_rst(task, H2_ERR_CANCEL); - h2_ihash_add(m->redo_tasks, task); + n = (m->tasks_active - m->limit_active - (int)h2_ihash_count(m->sredo)); + while (n > 0 && (stream = get_latest_repeatable_unsubmitted_stream(m))) { + h2_task_rst(stream->task, H2_ERR_CANCEL); + h2_ihash_add(m->sredo, stream); --n; } - if ((m->workers_busy - h2_ihash_count(m->redo_tasks)) > m->workers_limit) { - task = get_timed_out_busy_task(m); - if (task) { + if ((m->tasks_active - h2_ihash_count(m->sredo)) > m->limit_active) { + h2_stream *stream = get_timed_out_busy_stream(m); + if (stream) { /* Too many busy workers, unable to cancel enough streams * and with a busy, timed out stream, we tell the client * to go away... */ @@ -1154,11 +986,13 @@ apr_status_t h2_mplx_idle(h2_mplx *m) { apr_status_t status = APR_SUCCESS; apr_time_t now; - int acquired; + apr_size_t scount; - if (enter_mutex(m, &acquired) == APR_SUCCESS) { - apr_size_t scount = h2_ihash_count(m->streams); - if (scount > 0 && m->workers_busy) { + H2_MPLX_ENTER(m); + + scount = h2_ihash_count(m->streams); + if (scount > 0) { + if (m->tasks_active) { /* If we have streams in connection state 'IDLE', meaning * all streams are ready to sent data out, but lack * WINDOW_UPDATEs. @@ -1173,32 +1007,68 @@ apr_status_t h2_mplx_idle(h2_mplx *m) */ now = apr_time_now(); m->last_idle_block = now; - if (m->workers_limit > 2 + if (m->limit_active > 2 && now - m->last_limit_change >= m->limit_change_interval) { - if (m->workers_limit > 16) { - m->workers_limit = 16; + if (m->limit_active > 16) { + m->limit_active = 16; } - else if (m->workers_limit > 8) { - m->workers_limit = 8; + else if (m->limit_active > 8) { + m->limit_active = 8; } - else if (m->workers_limit > 4) { - m->workers_limit = 4; + else if (m->limit_active > 4) { + m->limit_active = 4; } - else if (m->workers_limit > 2) { - m->workers_limit = 2; + else if (m->limit_active > 2) { + m->limit_active = 2; } m->last_limit_change = now; ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, "h2_mplx(%ld): decrease worker limit to %d", - m->id, m->workers_limit); + m->id, m->limit_active); } - if (m->workers_busy > m->workers_limit) { + if (m->tasks_active > m->limit_active) { status = unschedule_slow_tasks(m); } } - leave_mutex(m, acquired); + else if (!h2_iq_empty(m->q)) { + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, + "h2_mplx(%ld): idle, but %d streams to process", + m->id, (int)h2_iq_count(m->q)); + status = APR_EAGAIN; + } + else { + /* idle, have streams, but no tasks active. what are we waiting for? + * WINDOW_UPDATEs from client? */ + h2_stream *stream = NULL; + + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, + "h2_mplx(%ld): idle, no tasks ongoing, %d streams", + m->id, (int)h2_ihash_count(m->streams)); + h2_ihash_shift(m->streams, (void**)&stream, 1); + if (stream) { + h2_ihash_add(m->streams, stream); + if (stream->output && !stream->out_checked) { + /* FIXME: this looks like a race between the session thinking + * it is idle and the EOF on a stream not being sent. + * Signal to caller to leave IDLE state. + */ + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c, + H2_STRM_MSG(stream, "output closed=%d, mplx idle" + ", out has %ld bytes buffered"), + h2_beam_is_closed(stream->output), + (long)h2_beam_get_buffered(stream->output)); + h2_ihash_add(m->streams, stream); + check_data_for(m, stream, 0); + stream->out_checked = 1; + status = APR_EAGAIN; + } + } + } } + register_if_needed(m); + + H2_MPLX_LEAVE(m); return status; } @@ -1215,9 +1085,9 @@ typedef struct { static int ngn_update_window(void *ctx, void *val) { ngn_update_ctx *uctx = ctx; - h2_task *task = val; - if (task && task->assigned == uctx->ngn - && output_consumed_signal(uctx->m, task)) { + h2_stream *stream = val; + if (stream->task && stream->task->assigned == uctx->ngn + && output_consumed_signal(uctx->m, stream->task)) { ++uctx->streams_updated; } return 1; @@ -1230,7 +1100,7 @@ static apr_status_t ngn_out_update_windo ctx.m = m; ctx.ngn = ngn; ctx.streams_updated = 0; - h2_ihash_iter(m->tasks, ngn_update_window, &ctx); + h2_ihash_iter(m->streams, ngn_update_window, &ctx); return ctx.streams_updated? APR_SUCCESS : APR_EAGAIN; } @@ -1242,92 +1112,99 @@ apr_status_t h2_mplx_req_engine_push(con apr_status_t status; h2_mplx *m; h2_task *task; - int acquired; + h2_stream *stream; task = h2_ctx_rget_task(r); if (!task) { return APR_ECONNABORTED; } m = task->mplx; - task->r = r; - if ((status = enter_mutex(m, &acquired)) == APR_SUCCESS) { - h2_stream *stream = h2_ihash_get(m->streams, task->stream_id); - - if (stream) { - status = h2_ngn_shed_push_task(m->ngn_shed, ngn_type, task, einit); - } - else { - status = APR_ECONNABORTED; - } - leave_mutex(m, acquired); + H2_MPLX_ENTER(m); + + stream = h2_ihash_get(m->streams, task->stream_id); + if (stream) { + status = h2_ngn_shed_push_request(m->ngn_shed, ngn_type, r, einit); } + else { + status = APR_ECONNABORTED; + } + + H2_MPLX_LEAVE(m); return status; } apr_status_t h2_mplx_req_engine_pull(h2_req_engine *ngn, apr_read_type_e block, - apr_uint32_t capacity, + int capacity, request_rec **pr) { h2_ngn_shed *shed = h2_ngn_shed_get_shed(ngn); h2_mplx *m = h2_ngn_shed_get_ctx(shed); apr_status_t status; - h2_task *task = NULL; - int acquired; + int want_shutdown; - if ((status = enter_mutex(m, &acquired)) == APR_SUCCESS) { - int want_shutdown = (block == APR_BLOCK_READ); + H2_MPLX_ENTER(m); - /* Take this opportunity to update output consummation - * for this engine */ - ngn_out_update_windows(m, ngn); - - if (want_shutdown && !h2_iq_empty(m->q)) { - /* For a blocking read, check first if requests are to be - * had and, if not, wait a short while before doing the - * blocking, and if unsuccessful, terminating read. - */ - status = h2_ngn_shed_pull_task(shed, ngn, capacity, 1, &task); - if (APR_STATUS_IS_EAGAIN(status)) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, - "h2_mplx(%ld): start block engine pull", m->id); - apr_thread_cond_timedwait(m->task_thawed, m->lock, - apr_time_from_msec(20)); - status = h2_ngn_shed_pull_task(shed, ngn, capacity, 1, &task); - } - } - else { - status = h2_ngn_shed_pull_task(shed, ngn, capacity, - want_shutdown, &task); + want_shutdown = (block == APR_BLOCK_READ); + + /* Take this opportunity to update output consummation + * for this engine */ + ngn_out_update_windows(m, ngn); + + if (want_shutdown && !h2_iq_empty(m->q)) { + /* For a blocking read, check first if requests are to be + * had and, if not, wait a short while before doing the + * blocking, and if unsuccessful, terminating read. + */ + status = h2_ngn_shed_pull_request(shed, ngn, capacity, 1, pr); + if (APR_STATUS_IS_EAGAIN(status)) { + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, + "h2_mplx(%ld): start block engine pull", m->id); + apr_thread_cond_timedwait(m->task_thawed, m->lock, + apr_time_from_msec(20)); + status = h2_ngn_shed_pull_request(shed, ngn, capacity, 1, pr); } - leave_mutex(m, acquired); } - *pr = task? task->r : NULL; + else { + status = h2_ngn_shed_pull_request(shed, ngn, capacity, + want_shutdown, pr); + } + + H2_MPLX_LEAVE(m); return status; } -void h2_mplx_req_engine_done(h2_req_engine *ngn, conn_rec *r_conn) +void h2_mplx_req_engine_done(h2_req_engine *ngn, conn_rec *r_conn, + apr_status_t status) { h2_task *task = h2_ctx_cget_task(r_conn); if (task) { h2_mplx *m = task->mplx; - int acquired; + h2_stream *stream; - if (enter_mutex(m, &acquired) == APR_SUCCESS) { - ngn_out_update_windows(m, ngn); - h2_ngn_shed_done_task(m->ngn_shed, ngn, task); - if (task->engine) { - /* cannot report that as done until engine returns */ - } - else { - task_done(m, task, ngn); - } - /* Take this opportunity to update output consummation - * for this engine */ - leave_mutex(m, acquired); + H2_MPLX_ENTER_ALWAYS(m); + + stream = h2_ihash_get(m->streams, task->stream_id); + + ngn_out_update_windows(m, ngn); + h2_ngn_shed_done_task(m->ngn_shed, ngn, task); + + if (status != APR_SUCCESS && stream + && h2_task_can_redo(task) + && !h2_ihash_get(m->sredo, stream->id)) { + h2_ihash_add(m->sredo, stream); + } + + if (task->engine) { + /* cannot report that as done until engine returns */ } + else { + task_done(m, task, ngn); + } + + H2_MPLX_LEAVE(m); } } @@ -1335,124 +1212,59 @@ void h2_mplx_req_engine_done(h2_req_engi * mplx master events dispatching ******************************************************************************/ -static int update_window(void *ctx, void *val) +int h2_mplx_has_master_events(h2_mplx *m) { - input_consumed_signal(ctx, val); - return 1; + return apr_atomic_read32(&m->event_pending) > 0; } apr_status_t h2_mplx_dispatch_master_events(h2_mplx *m, stream_ev_callback *on_resume, - stream_ev_callback *on_response, void *on_ctx) { - apr_status_t status; - int acquired; - int streams[32]; h2_stream *stream; - h2_task *task; - size_t i, n; + int n, id; - AP_DEBUG_ASSERT(m); - if ((status = enter_mutex(m, &acquired)) == APR_SUCCESS) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE3, 0, m->c, - "h2_mplx(%ld): dispatch events", m->id); - - /* update input windows for streams */ - h2_ihash_iter(m->streams, update_window, m); - - if (on_response && !h2_ihash_empty(m->sready)) { - n = h2_ihash_ishift(m->sready, streams, H2_ALEN(streams)); - for (i = 0; i < n; ++i) { - stream = h2_ihash_get(m->streams, streams[i]); - if (!stream) { - continue; - } - ap_log_cerror(APLOG_MARK, APLOG_TRACE3, 0, m->c, - "h2_mplx(%ld-%d): on_response", - m->id, stream->id); - task = h2_ihash_get(m->tasks, stream->id); - if (task) { - task->submitted = 1; - if (task->rst_error) { - h2_stream_rst(stream, task->rst_error); - } - else { - AP_DEBUG_ASSERT(task->response); - h2_stream_set_response(stream, task->response, task->output.beam); - } - } - else { - /* We have the stream ready without a task. This happens - * when we fail streams early. A response should already - * be present. */ - AP_DEBUG_ASSERT(stream->response || stream->rst_error); - } - status = on_response(on_ctx, stream->id); - } - } - - if (on_resume && !h2_ihash_empty(m->sresume)) { - n = h2_ihash_ishift(m->sresume, streams, H2_ALEN(streams)); - for (i = 0; i < n; ++i) { - stream = h2_ihash_get(m->streams, streams[i]); - if (!stream) { - continue; - } - ap_log_cerror(APLOG_MARK, APLOG_TRACE3, 0, m->c, - "h2_mplx(%ld-%d): on_resume", - m->id, stream->id); - h2_stream_set_suspended(stream, 0); - status = on_resume(on_ctx, stream->id); - } + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c, + "h2_mplx(%ld): dispatch events", m->id); + apr_atomic_set32(&m->event_pending, 0); + + /* update input windows for streams */ + h2_ihash_iter(m->streams, report_consumption_iter, m); + purge_streams(m, 1); + + n = h2_ififo_count(m->readyq); + while (n > 0 + && (h2_ififo_try_pull(m->readyq, &id) == APR_SUCCESS)) { + --n; + stream = h2_ihash_get(m->streams, id); + if (stream) { + on_resume(on_ctx, stream); } - - leave_mutex(m, acquired); } - return status; + + return APR_SUCCESS; } -static void output_produced(void *ctx, h2_bucket_beam *beam, apr_off_t bytes) +apr_status_t h2_mplx_keep_active(h2_mplx *m, h2_stream *stream) { - h2_mplx *m = ctx; - apr_status_t status; - h2_stream *stream; - int acquired; - - AP_DEBUG_ASSERT(m); - if ((status = enter_mutex(m, &acquired)) == APR_SUCCESS) { - stream = h2_ihash_get(m->streams, beam->id); - if (stream && h2_stream_is_suspended(stream)) { - h2_ihash_add(m->sresume, stream); - h2_beam_on_produced(beam, NULL, NULL); - have_out_data_for(m, beam->id); - } - leave_mutex(m, acquired); - } + check_data_for(m, stream, 1); + return APR_SUCCESS; } -apr_status_t h2_mplx_suspend_stream(h2_mplx *m, int stream_id) +int h2_mplx_awaits_data(h2_mplx *m) { - apr_status_t status; - h2_stream *stream; - h2_task *task; - int acquired; - - AP_DEBUG_ASSERT(m); - if ((status = enter_mutex(m, &acquired)) == APR_SUCCESS) { - stream = h2_ihash_get(m->streams, stream_id); - if (stream) { - h2_stream_set_suspended(stream, 1); - task = h2_ihash_get(m->tasks, stream->id); - if (stream->started && (!task || task->worker_done)) { - h2_ihash_add(m->sresume, stream); - } - else { - /* register callback so that we can resume on new output */ - h2_beam_on_produced(task->output.beam, output_produced, m); - } - } - leave_mutex(m, acquired); + int waiting = 1; + + H2_MPLX_ENTER_ALWAYS(m); + + if (h2_ihash_empty(m->streams)) { + waiting = 0; } - return status; + else if (!m->tasks_active && !h2_ififo_count(m->readyq) + && h2_iq_empty(m->q)) { + waiting = 0; + } + + H2_MPLX_LEAVE(m); + return waiting; } diff -up --new-file httpd-2.4.23/modules/http2/h2_mplx.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_mplx.h --- httpd-2.4.23/modules/http2/h2_mplx.h 2016-06-14 10:51:31.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_mplx.h 2017-07-06 14:58:22.000000000 +0200 @@ -40,7 +40,6 @@ struct apr_thread_cond_t; struct h2_bucket_beam; struct h2_config; struct h2_ihash_t; -struct h2_response; struct h2_task; struct h2_stream; struct h2_request; @@ -54,40 +53,31 @@ struct h2_req_engine; typedef struct h2_mplx h2_mplx; -/** - * Callback invoked for every stream that had input data read since - * the last invocation. - */ -typedef void h2_mplx_consumed_cb(void *ctx, int stream_id, apr_off_t consumed); - struct h2_mplx { long id; conn_rec *c; apr_pool_t *pool; - apr_bucket_alloc_t *bucket_alloc; + server_rec *s; /* server for master conn */ - APR_RING_ENTRY(h2_mplx) link; - - unsigned int aborted : 1; - unsigned int need_registration : 1; + unsigned int event_pending; + unsigned int aborted; + unsigned int is_registered; /* is registered at h2_workers */ struct h2_ihash_t *streams; /* all streams currently processing */ + struct h2_ihash_t *sredo; /* all streams that need to be re-started */ struct h2_ihash_t *shold; /* all streams done with task ongoing */ struct h2_ihash_t *spurge; /* all streams done, ready for destroy */ - - struct h2_iqueue *q; /* all stream ids that need to be started */ - struct h2_ihash_t *sready; /* all streams ready for response */ - struct h2_ihash_t *sresume; /* all streams that can be resumed */ - struct h2_ihash_t *tasks; /* all tasks started and not destroyed */ + struct h2_iqueue *q; /* all stream ids that need to be started */ + struct h2_ififo *readyq; /* all stream ids ready for output */ + struct h2_ihash_t *redo_tasks; /* all tasks that need to be redone */ - apr_uint32_t max_streams; /* max # of concurrent streams */ - apr_uint32_t max_stream_started; /* highest stream id that started processing */ - apr_uint32_t workers_busy; /* # of workers processing on this mplx */ - apr_uint32_t workers_limit; /* current # of workers limit, dynamic */ - apr_uint32_t workers_def_limit; /* default # of workers limit */ - apr_uint32_t workers_max; /* max, hard limit # of workers in a process */ + int max_streams; /* max # of concurrent streams */ + int max_stream_started; /* highest stream id that started processing */ + int tasks_active; /* # of tasks being processed from this mplx */ + int limit_active; /* current limit on active tasks, dynamic */ + int max_active; /* max, hard limit # of active tasks in a process */ apr_time_t last_idle_block; /* last time, this mplx entered IDLE while * streams were ready */ apr_time_t last_limit_change; /* last time, worker limit changed */ @@ -99,18 +89,12 @@ struct h2_mplx { struct apr_thread_cond_t *join_wait; apr_size_t stream_max_mem; - apr_interval_time_t stream_timeout; apr_pool_t *spare_io_pool; apr_array_header_t *spare_slaves; /* spare slave connections */ struct h2_workers *workers; - int tx_handles_reserved; - apr_size_t tx_chunk_size; - h2_mplx_consumed_cb *input_consumed; - void *input_consumed_ctx; - struct h2_ngn_shed *ngn_shed; }; @@ -128,7 +112,6 @@ apr_status_t h2_mplx_child_init(apr_pool */ h2_mplx *h2_mplx_create(conn_rec *c, apr_pool_t *master, const struct h2_config *conf, - apr_interval_time_t stream_timeout, struct h2_workers *workers); /** @@ -139,15 +122,9 @@ h2_mplx *h2_mplx_create(conn_rec *c, apr * @param m the mplx to be released and destroyed * @param wait condition var to wait on for ref counter == 0 */ -apr_status_t h2_mplx_release_and_join(h2_mplx *m, struct apr_thread_cond_t *wait); - -/** - * Aborts the multiplexer. It will answer all future invocation with - * APR_ECONNABORTED, leading to early termination of ongoing streams. - */ -void h2_mplx_abort(h2_mplx *mplx); +void h2_mplx_release_and_join(h2_mplx *m, struct apr_thread_cond_t *wait); -struct h2_task *h2_mplx_pop_task(h2_mplx *mplx, int *has_more); +apr_status_t h2_mplx_pop_task(h2_mplx *m, struct h2_task **ptask); void h2_mplx_task_done(h2_mplx *m, struct h2_task *task, struct h2_task **ptask); @@ -156,21 +133,24 @@ void h2_mplx_task_done(h2_mplx *m, struc * but let the ongoing ones finish normally. * @return the highest stream id being/been processed */ -apr_uint32_t h2_mplx_shutdown(h2_mplx *m); +int h2_mplx_shutdown(h2_mplx *m); + +int h2_mplx_is_busy(h2_mplx *m); /******************************************************************************* * IO lifetime of streams. ******************************************************************************/ +struct h2_stream *h2_mplx_stream_get(h2_mplx *m, int id); + /** - * Notifies mplx that a stream has finished processing. + * Notifies mplx that a stream has been completely handled on the main + * connection and is ready for cleanup. * * @param m the mplx itself - * @param stream the id of the stream being done - * @param rst_error if != 0, the stream was reset with the error given - * + * @param stream the stream ready for cleanup */ -apr_status_t h2_mplx_stream_done(h2_mplx *m, struct h2_stream *stream); +apr_status_t h2_mplx_stream_cleanup(h2_mplx *m, struct h2_stream *stream); /** * Waits on output data from any stream in this session to become available. @@ -179,6 +159,8 @@ apr_status_t h2_mplx_stream_done(h2_mplx apr_status_t h2_mplx_out_trywait(h2_mplx *m, apr_interval_time_t timeout, struct apr_thread_cond_t *iowait); +apr_status_t h2_mplx_keep_active(h2_mplx *m, struct h2_stream *stream); + /******************************************************************************* * Stream processing. ******************************************************************************/ @@ -204,31 +186,29 @@ apr_status_t h2_mplx_process(h2_mplx *m, */ apr_status_t h2_mplx_reprioritize(h2_mplx *m, h2_stream_pri_cmp *cmp, void *ctx); +typedef apr_status_t stream_ev_callback(void *ctx, struct h2_stream *stream); + /** - * Register a callback for the amount of input data consumed per stream. The - * will only ever be invoked from the thread creating this h2_mplx, e.g. when - * calls from that thread into this h2_mplx are made. - * - * @param m the multiplexer to register the callback at - * @param cb the function to invoke - * @param ctx user supplied argument to invocation. + * Check if the multiplexer has events for the master connection pending. + * @return != 0 iff there are events pending */ -void h2_mplx_set_consumed_cb(h2_mplx *m, h2_mplx_consumed_cb *cb, void *ctx); - - -typedef apr_status_t stream_ev_callback(void *ctx, int stream_id); +int h2_mplx_has_master_events(h2_mplx *m); /** * Dispatch events for the master connection, such as - * - resume: new output data has arrived for a suspended stream - * - response: the response for a stream is ready + ± @param m the multiplexer + * @param on_resume new output data has arrived for a suspended stream + * @param ctx user supplied argument to invocation. */ apr_status_t h2_mplx_dispatch_master_events(h2_mplx *m, stream_ev_callback *on_resume, - stream_ev_callback *on_response, void *ctx); -apr_status_t h2_mplx_suspend_stream(h2_mplx *m, int stream_id); +int h2_mplx_awaits_data(h2_mplx *m); + +typedef int h2_mplx_stream_cb(struct h2_stream *s, void *ctx); + +apr_status_t h2_mplx_stream_do(h2_mplx *m, h2_mplx_stream_cb *cb, void *ctx); /******************************************************************************* * Output handling of streams. @@ -238,7 +218,7 @@ apr_status_t h2_mplx_suspend_stream(h2_m * Opens the output for the given stream with the specified response. */ apr_status_t h2_mplx_out_open(h2_mplx *mplx, int stream_id, - struct h2_response *response); + struct h2_bucket_beam *beam); /******************************************************************************* * h2_mplx list Manipulation. @@ -331,7 +311,7 @@ typedef apr_status_t h2_mplx_req_engine_ const char *id, const char *type, apr_pool_t *pool, - apr_uint32_t req_buffer_size, + apr_size_t req_buffer_size, request_rec *r, h2_output_consumed **pconsumed, void **pbaton); @@ -341,8 +321,9 @@ apr_status_t h2_mplx_req_engine_push(con h2_mplx_req_engine_init *einit); apr_status_t h2_mplx_req_engine_pull(struct h2_req_engine *ngn, apr_read_type_e block, - apr_uint32_t capacity, + int capacity, request_rec **pr); -void h2_mplx_req_engine_done(struct h2_req_engine *ngn, conn_rec *r_conn); +void h2_mplx_req_engine_done(struct h2_req_engine *ngn, conn_rec *r_conn, + apr_status_t status); #endif /* defined(__mod_h2__h2_mplx__) */ diff -up --new-file httpd-2.4.23/modules/http2/h2_ngn_shed.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_ngn_shed.c --- httpd-2.4.23/modules/http2/h2_ngn_shed.c 2016-06-22 15:30:24.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_ngn_shed.c 2017-04-10 17:04:55.000000000 +0200 @@ -35,7 +35,6 @@ #include "h2_ctx.h" #include "h2_h2.h" #include "h2_mplx.h" -#include "h2_response.h" #include "h2_request.h" #include "h2_task.h" #include "h2_util.h" @@ -46,6 +45,7 @@ typedef struct h2_ngn_entry h2_ngn_entry struct h2_ngn_entry { APR_RING_ENTRY(h2_ngn_entry) link; h2_task *task; + request_rec *r; }; #define H2_NGN_ENTRY_NEXT(e) APR_RING_NEXT((e), link) @@ -72,17 +72,17 @@ struct h2_req_engine { const char *type; /* name of the engine type */ apr_pool_t *pool; /* pool for engine specific allocations */ conn_rec *c; /* connection this engine is assigned to */ - h2_task *task; /* the task this engine is base on, running in */ + h2_task *task; /* the task this engine is based on, running in */ h2_ngn_shed *shed; unsigned int shutdown : 1; /* engine is being shut down */ unsigned int done : 1; /* engine has finished */ APR_RING_HEAD(h2_req_entries, h2_ngn_entry) entries; - apr_uint32_t capacity; /* maximum concurrent requests */ - apr_uint32_t no_assigned; /* # of assigned requests */ - apr_uint32_t no_live; /* # of live */ - apr_uint32_t no_finished; /* # of finished */ + int capacity; /* maximum concurrent requests */ + int no_assigned; /* # of assigned requests */ + int no_live; /* # of live */ + int no_finished; /* # of finished */ h2_output_consumed *out_consumed; void *out_consumed_ctx; @@ -107,8 +107,8 @@ void h2_req_engine_out_consumed(h2_req_e } h2_ngn_shed *h2_ngn_shed_create(apr_pool_t *pool, conn_rec *c, - apr_uint32_t default_capacity, - apr_uint32_t req_buffer_size) + int default_capacity, + apr_size_t req_buffer_size) { h2_ngn_shed *shed; @@ -144,30 +144,50 @@ void h2_ngn_shed_abort(h2_ngn_shed *shed shed->aborted = 1; } -static void ngn_add_task(h2_req_engine *ngn, h2_task *task) +static void ngn_add_task(h2_req_engine *ngn, h2_task *task, request_rec *r) { h2_ngn_entry *entry = apr_pcalloc(task->pool, sizeof(*entry)); APR_RING_ELEM_INIT(entry, link); entry->task = task; + entry->r = r; H2_REQ_ENTRIES_INSERT_TAIL(&ngn->entries, entry); + ngn->no_assigned++; } -apr_status_t h2_ngn_shed_push_task(h2_ngn_shed *shed, const char *ngn_type, - h2_task *task, http2_req_engine_init *einit) +apr_status_t h2_ngn_shed_push_request(h2_ngn_shed *shed, const char *ngn_type, + request_rec *r, + http2_req_engine_init *einit) { h2_req_engine *ngn; + h2_task *task = h2_ctx_rget_task(r); - AP_DEBUG_ASSERT(shed); - + ap_assert(task); ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, shed->c, "h2_ngn_shed(%ld): PUSHing request (task=%s)", shed->c->id, task->id); - if (task->ser_headers) { + if (task->request->serialize) { /* Max compatibility, deny processing of this */ return APR_EOF; } + if (task->assigned) { + --task->assigned->no_assigned; + --task->assigned->no_live; + task->assigned = NULL; + } + + if (task->engine) { + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, task->c, + "h2_ngn_shed(%ld): push task(%s) hosting engine %s " + "already with %d tasks", + shed->c->id, task->id, task->engine->id, + task->engine->no_assigned); + task->assigned = task->engine; + ngn_add_task(task->engine, task, r); + return APR_SUCCESS; + } + ngn = apr_hash_get(shed->ngns, ngn_type, APR_HASH_KEY_STRING); if (ngn && !ngn->shutdown) { /* this task will be processed in another thread, @@ -175,12 +195,10 @@ apr_status_t h2_ngn_shed_push_task(h2_ng ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, task->c, "h2_ngn_shed(%ld): pushing request %s to %s", shed->c->id, task->id, ngn->id); - if (!h2_task_is_detached(task)) { + if (!h2_task_has_thawed(task)) { h2_task_freeze(task); } - /* FIXME: sometimes ngn is garbage, probly alread freed */ - ngn_add_task(ngn, task); - ngn->no_assigned++; + ngn_add_task(ngn, task, r); return APR_SUCCESS; } @@ -202,13 +220,13 @@ apr_status_t h2_ngn_shed_push_task(h2_ng APR_RING_INIT(&newngn->entries, h2_ngn_entry, link); status = einit(newngn, newngn->id, newngn->type, newngn->pool, - shed->req_buffer_size, task->r, + shed->req_buffer_size, r, &newngn->out_consumed, &newngn->out_consumed_ctx); + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, task->c, APLOGNO(03395) "h2_ngn_shed(%ld): create engine %s (%s)", shed->c->id, newngn->id, newngn->type); if (status == APR_SUCCESS) { - AP_DEBUG_ASSERT(task->engine == NULL); newngn->task = task; task->engine = newngn; task->assigned = newngn; @@ -225,7 +243,7 @@ static h2_ngn_entry *pop_detached(h2_req for (entry = H2_REQ_ENTRIES_FIRST(&ngn->entries); entry != H2_REQ_ENTRIES_SENTINEL(&ngn->entries); entry = H2_NGN_ENTRY_NEXT(entry)) { - if (h2_task_is_detached(entry->task) + if (h2_task_has_thawed(entry->task) || (entry->task->engine == ngn)) { /* The task hosting this engine can always be pulled by it. * For other task, they need to become detached, e.g. no longer @@ -237,17 +255,17 @@ static h2_ngn_entry *pop_detached(h2_req return NULL; } -apr_status_t h2_ngn_shed_pull_task(h2_ngn_shed *shed, - h2_req_engine *ngn, - apr_uint32_t capacity, - int want_shutdown, - h2_task **ptask) +apr_status_t h2_ngn_shed_pull_request(h2_ngn_shed *shed, + h2_req_engine *ngn, + int capacity, + int want_shutdown, + request_rec **pr) { h2_ngn_entry *entry; - AP_DEBUG_ASSERT(ngn); - *ptask = NULL; - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, shed->c, APLOGNO(03396) + ap_assert(ngn); + *pr = NULL; + ap_log_cerror(APLOG_MARK, APLOG_TRACE3, 0, shed->c, APLOGNO(03396) "h2_ngn_shed(%ld): pull task for engine %s, shutdown=%d", shed->c->id, ngn->id, want_shutdown); if (shed->aborted) { @@ -274,7 +292,7 @@ apr_status_t h2_ngn_shed_pull_task(h2_ng "h2_ngn_shed(%ld): pulled request %s for engine %s", shed->c->id, entry->task->id, ngn->id); ngn->no_live++; - *ptask = entry->task; + *pr = entry->r; entry->task->assigned = ngn; /* task will now run in ngn's own thread. Modules like lua * seem to require the correct thread set in the conn_rec. @@ -328,7 +346,7 @@ void h2_ngn_shed_done_ngn(h2_ngn_shed *s if (!shed->aborted && !H2_REQ_ENTRIES_EMPTY(&ngn->entries)) { h2_ngn_entry *entry; - ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, shed->c, + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, shed->c, "h2_ngn_shed(%ld): exit engine %s (%s), " "has still requests queued, shutdown=%d," "assigned=%ld, live=%ld, finished=%ld", @@ -340,15 +358,16 @@ void h2_ngn_shed_done_ngn(h2_ngn_shed *s entry != H2_REQ_ENTRIES_SENTINEL(&ngn->entries); entry = H2_NGN_ENTRY_NEXT(entry)) { h2_task *task = entry->task; - ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, shed->c, + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, shed->c, "h2_ngn_shed(%ld): engine %s has queued task %s, " "frozen=%d, aborting", shed->c->id, ngn->id, task->id, task->frozen); ngn_done_task(shed, ngn, task, 0, 1); + task->engine = task->assigned = NULL; } } if (!shed->aborted && (ngn->no_assigned > 1 || ngn->no_live > 1)) { - ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, shed->c, + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, shed->c, "h2_ngn_shed(%ld): exit engine %s (%s), " "assigned=%ld, live=%ld, finished=%ld", shed->c->id, ngn->id, ngn->type, @@ -364,3 +383,9 @@ void h2_ngn_shed_done_ngn(h2_ngn_shed *s apr_hash_set(shed->ngns, ngn->type, APR_HASH_KEY_STRING, NULL); ngn->done = 1; } + +void h2_ngn_shed_destroy(h2_ngn_shed *shed) +{ + ap_assert(apr_hash_count(shed->ngns) == 0); +} + diff -up --new-file httpd-2.4.23/modules/http2/h2_ngn_shed.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_ngn_shed.h --- httpd-2.4.23/modules/http2/h2_ngn_shed.h 2016-05-23 12:55:29.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_ngn_shed.h 2016-10-27 18:53:58.000000000 +0200 @@ -28,8 +28,8 @@ struct h2_ngn_shed { unsigned int aborted : 1; - apr_uint32_t default_capacity; - apr_uint32_t req_buffer_size; /* preferred buffer size for responses */ + int default_capacity; + apr_size_t req_buffer_size; /* preferred buffer size for responses */ }; const char *h2_req_engine_get_id(h2_req_engine *engine); @@ -42,14 +42,16 @@ typedef apr_status_t h2_shed_ngn_init(h2 const char *id, const char *type, apr_pool_t *pool, - apr_uint32_t req_buffer_size, + apr_size_t req_buffer_size, request_rec *r, h2_output_consumed **pconsumed, void **pbaton); h2_ngn_shed *h2_ngn_shed_create(apr_pool_t *pool, conn_rec *c, - apr_uint32_t default_capactiy, - apr_uint32_t req_buffer_size); + int default_capactiy, + apr_size_t req_buffer_size); + +void h2_ngn_shed_destroy(h2_ngn_shed *shed); void h2_ngn_shed_set_ctx(h2_ngn_shed *shed, void *user_ctx); void *h2_ngn_shed_get_ctx(h2_ngn_shed *shed); @@ -58,13 +60,13 @@ h2_ngn_shed *h2_ngn_shed_get_shed(struct void h2_ngn_shed_abort(h2_ngn_shed *shed); -apr_status_t h2_ngn_shed_push_task(h2_ngn_shed *shed, const char *ngn_type, - struct h2_task *task, - h2_shed_ngn_init *init_cb); - -apr_status_t h2_ngn_shed_pull_task(h2_ngn_shed *shed, h2_req_engine *pub_ngn, - apr_uint32_t capacity, - int want_shutdown, struct h2_task **ptask); +apr_status_t h2_ngn_shed_push_request(h2_ngn_shed *shed, const char *ngn_type, + request_rec *r, + h2_shed_ngn_init *init_cb); + +apr_status_t h2_ngn_shed_pull_request(h2_ngn_shed *shed, h2_req_engine *pub_ngn, + int capacity, + int want_shutdown, request_rec **pr); apr_status_t h2_ngn_shed_done_task(h2_ngn_shed *shed, struct h2_req_engine *ngn, diff -up --new-file httpd-2.4.23/modules/http2/h2_proxy_session.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_proxy_session.c --- httpd-2.4.23/modules/http2/h2_proxy_session.c 2016-06-22 15:11:03.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_proxy_session.c 2017-05-02 17:29:13.000000000 +0200 @@ -35,17 +35,21 @@ typedef struct h2_proxy_stream { const char *url; request_rec *r; - h2_request *req; + h2_proxy_request *req; + const char *real_server_uri; + const char *p_server_uri; int standalone; - h2_stream_state_t state; + h2_proxy_stream_state_t state; unsigned int suspended : 1; - unsigned int data_sent : 1; - unsigned int data_received : 1; + unsigned int waiting_on_100 : 1; + unsigned int waiting_on_ping : 1; uint32_t error_code; apr_bucket_brigade *input; + apr_off_t data_sent; apr_bucket_brigade *output; + apr_off_t data_received; apr_table_t *saves; } h2_proxy_stream; @@ -53,6 +57,9 @@ typedef struct h2_proxy_stream { static void dispatch_event(h2_proxy_session *session, h2_proxys_event_t ev, int arg, const char *msg); +static void ping_arrived(h2_proxy_session *session); +static apr_status_t check_suspended(h2_proxy_session *session); +static void stream_resume(h2_proxy_stream *stream); static apr_status_t proxy_session_pre_close(void *theconn) @@ -64,7 +71,7 @@ static apr_status_t proxy_session_pre_cl ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c, "proxy_session(%s): pool cleanup, state=%d, streams=%d", session->id, session->state, - (int)h2_ihash_count(session->streams)); + (int)h2_proxy_ihash_count(session->streams)); session->aborted = 1; dispatch_event(session, H2_PROXYS_EV_PRE_CLOSE, 0, NULL); nghttp2_session_del(session->ngh2); @@ -94,7 +101,7 @@ static int proxy_pass_brigade(apr_bucket * issues in case of error returned below. */ apr_brigade_cleanup(bb); if (status != APR_SUCCESS) { - ap_log_cerror(APLOG_MARK, APLOG_ERR, status, origin, APLOGNO(03357) + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, origin, APLOGNO(03357) "pass output failed to %pI (%s)", p_conn->addr, p_conn->hostname); } @@ -131,19 +138,64 @@ static int on_frame_recv(nghttp2_session void *user_data) { h2_proxy_session *session = user_data; + h2_proxy_stream *stream; + request_rec *r; int n; if (APLOGcdebug(session->c)) { char buffer[256]; - h2_util_frame_print(frame, buffer, sizeof(buffer)/sizeof(buffer[0])); + h2_proxy_util_frame_print(frame, buffer, sizeof(buffer)/sizeof(buffer[0])); ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03341) "h2_proxy_session(%s): recv FRAME[%s]", session->id, buffer); } + session->last_frame_received = apr_time_now(); switch (frame->hd.type) { case NGHTTP2_HEADERS: + stream = nghttp2_session_get_stream_user_data(ngh2, frame->hd.stream_id); + if (!stream) { + return NGHTTP2_ERR_CALLBACK_FAILURE; + } + r = stream->r; + if (r->status >= 100 && r->status < 200) { + /* By default, we will forward all interim responses when + * we are sitting on a HTTP/2 connection to the client */ + int forward = session->h2_front; + switch(r->status) { + case 100: + if (stream->waiting_on_100) { + stream->waiting_on_100 = 0; + r->status_line = ap_get_status_line(r->status); + forward = 1; + } + break; + case 103: + /* workaround until we get this into http protocol base + * parts. without this, unknown codes are converted to + * 500... */ + r->status_line = "103 Early Hints"; + break; + default: + r->status_line = ap_get_status_line(r->status); + break; + } + ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(03487) + "h2_proxy_session(%s): got interim HEADERS, " + "status=%d, will forward=%d", + session->id, r->status, forward); + if (forward) { + ap_send_interim_response(r, 1); + } + } + stream_resume(stream); + break; + case NGHTTP2_PING: + if (session->check_ping) { + session->check_ping = 0; + ping_arrived(session); + } break; case NGHTTP2_PUSH_PROMISE: break; @@ -174,7 +226,7 @@ static int before_frame_send(nghttp2_ses if (APLOGcdebug(session->c)) { char buffer[256]; - h2_util_frame_print(frame, buffer, sizeof(buffer)/sizeof(buffer[0])); + h2_proxy_util_frame_print(frame, buffer, sizeof(buffer)/sizeof(buffer[0])); ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03343) "h2_proxy_session(%s): sent FRAME[%s]", session->id, buffer); @@ -188,7 +240,7 @@ static int add_header(void *table, const return 1; } -static void process_proxy_header(request_rec *r, const char *n, const char *v) +static void process_proxy_header(h2_proxy_stream *stream, const char *n, const char *v) { static const struct { const char *name; @@ -201,16 +253,26 @@ static void process_proxy_header(request { "Set-Cookie", ap_proxy_cookie_reverse_map }, { NULL, NULL } }; + request_rec *r = stream->r; proxy_dir_conf *dconf; int i; - for (i = 0; transform_hdrs[i].name; ++i) { - if (!ap_cstr_casecmp(transform_hdrs[i].name, n)) { + dconf = ap_get_module_config(r->per_dir_config, &proxy_module); + if (!dconf->preserve_host) { + for (i = 0; transform_hdrs[i].name; ++i) { + if (!ap_cstr_casecmp(transform_hdrs[i].name, n)) { + apr_table_add(r->headers_out, n, + (*transform_hdrs[i].func)(r, dconf, v)); + return; + } + } + if (!ap_cstr_casecmp("Link", n)) { dconf = ap_get_module_config(r->per_dir_config, &proxy_module); apr_table_add(r->headers_out, n, - (*transform_hdrs[i].func)(r, dconf, v)); + h2_proxy_link_reverse_map(r, dconf, + stream->real_server_uri, stream->p_server_uri, v)); return; - } + } } apr_table_add(r->headers_out, n, v); } @@ -240,13 +302,13 @@ static apr_status_t h2_proxy_stream_add_ char *hname, *hvalue; hname = apr_pstrndup(stream->pool, n, nlen); - h2_util_camel_case_header(hname, nlen); + h2_proxy_util_camel_case_header(hname, nlen); hvalue = apr_pstrndup(stream->pool, v, vlen); ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, stream->session->c, "h2_proxy_stream(%s-%d): got header %s: %s", stream->session->id, stream->id, hname, hvalue); - process_proxy_header(stream->r, hname, hvalue); + process_proxy_header(stream, hname, hvalue); } return APR_SUCCESS; } @@ -284,7 +346,7 @@ static void h2_proxy_stream_end_headers_ /* If USE_CANONICAL_NAME_OFF was configured for the proxy virtual host, * then the server name returned by ap_get_server_name() is the - * origin server name (which does make too much sense with Via: headers) + * origin server name (which doesn't make sense with Via: headers) * so we use the proxy vhost's name instead. */ if (server_name == stream->r->hostname) { @@ -320,9 +382,9 @@ static void h2_proxy_stream_end_headers_ } } -static int on_data_chunk_recv(nghttp2_session *ngh2, uint8_t flags, - int32_t stream_id, const uint8_t *data, - size_t len, void *user_data) +static int stream_response_data(nghttp2_session *ngh2, uint8_t flags, + int32_t stream_id, const uint8_t *data, + size_t len, void *user_data) { h2_proxy_session *session = user_data; h2_proxy_stream *stream; @@ -342,8 +404,8 @@ static int on_data_chunk_recv(nghttp2_se /* last chance to manipulate response headers. * after this, only trailers */ h2_proxy_stream_end_headers_out(stream); - stream->data_received = 1; } + stream->data_received += len; b = apr_bucket_transient_create((const char*)data, len, stream->r->connection->bucket_alloc); @@ -353,10 +415,11 @@ static int on_data_chunk_recv(nghttp2_se b = apr_bucket_flush_create(stream->r->connection->bucket_alloc); APR_BRIGADE_INSERT_TAIL(stream->output, b); - ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, stream->r, APLOGNO(03359) - "h2_proxy_session(%s): pass response data for " - "stream %d, %d bytes", session->id, stream_id, (int)len); status = ap_pass_brigade(stream->r->output_filters, stream->output); + ap_log_rerror(APLOG_MARK, APLOG_DEBUG, status, stream->r, APLOGNO(03359) + "h2_proxy_session(%s): stream=%d, response DATA %ld, %ld" + " total", session->id, stream_id, (long)len, + (long)stream->data_received); if (status != APR_SUCCESS) { ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, session->c, APLOGNO(03344) "h2_proxy_session(%s): passing output on stream %d", @@ -383,7 +446,7 @@ static int on_stream_close(nghttp2_sessi ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03360) "h2_proxy_session(%s): stream=%d, closed, err=%d", session->id, stream_id, error_code); - stream = h2_ihash_get(session->streams, stream_id); + stream = h2_proxy_ihash_get(session->streams, stream_id); if (stream) { stream->error_code = error_code; } @@ -417,10 +480,10 @@ static int on_header(nghttp2_session *ng return 0; } -static ssize_t stream_data_read(nghttp2_session *ngh2, int32_t stream_id, - uint8_t *buf, size_t length, - uint32_t *data_flags, - nghttp2_data_source *source, void *user_data) +static ssize_t stream_request_data(nghttp2_session *ngh2, int32_t stream_id, + uint8_t *buf, size_t length, + uint32_t *data_flags, + nghttp2_data_source *source, void *user_data) { h2_proxy_stream *stream; apr_status_t status = APR_SUCCESS; @@ -434,7 +497,17 @@ static ssize_t stream_data_read(nghttp2_ return NGHTTP2_ERR_CALLBACK_FAILURE; } - if (APR_BRIGADE_EMPTY(stream->input)) { + if (stream->session->check_ping) { + /* suspend until we hear from the other side */ + stream->waiting_on_ping = 1; + status = APR_EAGAIN; + } + else if (stream->r->expecting_100) { + /* suspend until the answer comes */ + stream->waiting_on_100 = 1; + status = APR_EAGAIN; + } + else if (APR_BRIGADE_EMPTY(stream->input)) { status = ap_get_brigade(stream->r->input_filters, stream->input, AP_MODE_READBYTES, APR_NONBLOCK_READ, H2MAX(APR_BUCKET_BUFF_SIZE, length)); @@ -476,10 +549,12 @@ static ssize_t stream_data_read(nghttp2_ apr_bucket_delete(b); } - ap_log_rerror(APLOG_MARK, APLOG_TRACE2, status, stream->r, - "h2_proxy_stream(%d): request body read %ld bytes, flags=%d", - stream->id, (long)readlen, (int)*data_flags); - stream->data_sent = 1; + stream->data_sent += readlen; + ap_log_rerror(APLOG_MARK, APLOG_DEBUG, status, stream->r, APLOGNO(03468) + "h2_proxy_stream(%d): request DATA %ld, %ld" + " total, flags=%d", + stream->id, (long)readlen, (long)stream->data_sent, + (int)*data_flags); return readlen; } else if (APR_STATUS_IS_EAGAIN(status)) { @@ -488,7 +563,7 @@ static ssize_t stream_data_read(nghttp2_ "h2_proxy_stream(%s-%d): suspending", stream->session->id, stream_id); stream->suspended = 1; - h2_iq_add(stream->session->suspended, stream->id, NULL, NULL); + h2_proxy_iq_add(stream->session->suspended, stream->id, NULL, NULL); return NGHTTP2_ERR_DEFERRED; } else { @@ -498,8 +573,30 @@ static ssize_t stream_data_read(nghttp2_ } } +#ifdef H2_NG2_INVALID_HEADER_CB +static int on_invalid_header_cb(nghttp2_session *ngh2, + const nghttp2_frame *frame, + const uint8_t *name, size_t namelen, + const uint8_t *value, size_t valuelen, + uint8_t flags, void *user_data) +{ + h2_proxy_session *session = user_data; + if (APLOGcdebug(session->c)) { + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03469) + "h2_proxy_session(%s-%d): denying stream with invalid header " + "'%s: %s'", session->id, (int)frame->hd.stream_id, + apr_pstrndup(session->pool, (const char *)name, namelen), + apr_pstrndup(session->pool, (const char *)value, valuelen)); + } + return nghttp2_submit_rst_stream(session->ngh2, NGHTTP2_FLAG_NONE, + frame->hd.stream_id, + NGHTTP2_PROTOCOL_ERROR); +} +#endif + h2_proxy_session *h2_proxy_session_setup(const char *id, proxy_conn_rec *p_conn, proxy_server_conf *conf, + int h2_front, unsigned char window_bits_connection, unsigned char window_bits_stream, h2_proxy_request_done *done) @@ -520,10 +617,11 @@ h2_proxy_session *h2_proxy_session_setup session->conf = conf; session->pool = p_conn->scpool; session->state = H2_PROXYS_ST_INIT; + session->h2_front = h2_front; session->window_bits_stream = window_bits_stream; session->window_bits_connection = window_bits_connection; - session->streams = h2_ihash_create(pool, offsetof(h2_proxy_stream, id)); - session->suspended = h2_iq_create(pool, 5); + session->streams = h2_proxy_ihash_create(pool, offsetof(h2_proxy_stream, id)); + session->suspended = h2_proxy_iq_create(pool, 5); session->done = done; session->input = apr_brigade_create(session->pool, session->c->bucket_alloc); @@ -531,11 +629,14 @@ h2_proxy_session *h2_proxy_session_setup nghttp2_session_callbacks_new(&cbs); nghttp2_session_callbacks_set_on_frame_recv_callback(cbs, on_frame_recv); - nghttp2_session_callbacks_set_on_data_chunk_recv_callback(cbs, on_data_chunk_recv); + nghttp2_session_callbacks_set_on_data_chunk_recv_callback(cbs, stream_response_data); nghttp2_session_callbacks_set_on_stream_close_callback(cbs, on_stream_close); nghttp2_session_callbacks_set_on_header_callback(cbs, on_header); nghttp2_session_callbacks_set_before_frame_send_callback(cbs, before_frame_send); nghttp2_session_callbacks_set_send_callback(cbs, raw_send); +#ifdef H2_NG2_INVALID_HEADER_CB + nghttp2_session_callbacks_set_on_invalid_header_callback(cbs, on_invalid_header_cb); +#endif nghttp2_option_new(&option); nghttp2_option_set_peer_max_concurrent_streams(option, 100); @@ -549,6 +650,14 @@ h2_proxy_session *h2_proxy_session_setup ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03362) "setup session for %s", p_conn->hostname); } + else { + h2_proxy_session *session = p_conn->data; + apr_interval_time_t age = apr_time_now() - session->last_frame_received; + if (age > apr_time_from_sec(1)) { + session->check_ping = 1; + nghttp2_submit_ping(session->ngh2, 0, (const uint8_t *)"nevergonnagiveyouup"); + } + } return p_conn->data; } @@ -590,6 +699,7 @@ static apr_status_t open_stream(h2_proxy apr_uri_t puri; const char *authority, *scheme, *path; apr_status_t status; + proxy_dir_conf *dconf; stream = apr_pcalloc(r->pool, sizeof(*stream)); @@ -603,26 +713,64 @@ static apr_status_t open_stream(h2_proxy stream->input = apr_brigade_create(stream->pool, session->c->bucket_alloc); stream->output = apr_brigade_create(stream->pool, session->c->bucket_alloc); - stream->req = h2_req_create(1, stream->pool, 0); + stream->req = h2_proxy_req_create(1, stream->pool, 0); status = apr_uri_parse(stream->pool, url, &puri); if (status != APR_SUCCESS) return status; - + scheme = (strcmp(puri.scheme, "h2")? "http" : "https"); - authority = puri.hostname; - if (!ap_strchr_c(authority, ':') && puri.port - && apr_uri_port_of_scheme(scheme) != puri.port) { - /* port info missing and port is not default for scheme: append */ - authority = apr_psprintf(stream->pool, "%s:%d", authority, puri.port); + + dconf = ap_get_module_config(r->per_dir_config, &proxy_module); + if (dconf->preserve_host) { + authority = r->hostname; } + else { + authority = puri.hostname; + if (!ap_strchr_c(authority, ':') && puri.port + && apr_uri_port_of_scheme(scheme) != puri.port) { + /* port info missing and port is not default for scheme: append */ + authority = apr_psprintf(stream->pool, "%s:%d", authority, puri.port); + } + } + + /* we need this for mapping relative uris in headers ("Link") back + * to local uris */ + stream->real_server_uri = apr_psprintf(stream->pool, "%s://%s", scheme, authority); + stream->p_server_uri = apr_psprintf(stream->pool, "%s://%s", puri.scheme, authority); path = apr_uri_unparse(stream->pool, &puri, APR_URI_UNP_OMITSITEPART); - h2_req_make(stream->req, stream->pool, r->method, scheme, + h2_proxy_req_make(stream->req, stream->pool, r->method, scheme, authority, path, r->headers_in); + if (dconf->add_forwarded_headers) { + if (PROXYREQ_REVERSE == r->proxyreq) { + const char *buf; + + /* Add X-Forwarded-For: so that the upstream has a chance to + * determine, where the original request came from. + */ + apr_table_mergen(stream->req->headers, "X-Forwarded-For", + r->useragent_ip); + + /* Add X-Forwarded-Host: so that upstream knows what the + * original request hostname was. + */ + if ((buf = apr_table_get(r->headers_in, "Host"))) { + apr_table_mergen(stream->req->headers, "X-Forwarded-Host", buf); + } + + /* Add X-Forwarded-Server: so that upstream knows what the + * name of this proxy server is (if there are more than one) + * XXX: This duplicates Via: - do we strictly need it? + */ + apr_table_mergen(stream->req->headers, "X-Forwarded-Server", + r->server->server_hostname); + } + } + /* Tuck away all already existing cookies */ stream->saves = apr_table_make(r->pool, 2); - apr_table_do(add_header, stream->saves, r->headers_out,"Set-Cookie", NULL); + apr_table_do(add_header, stream->saves, r->headers_out, "Set-Cookie", NULL); *pstream = stream; @@ -631,40 +779,45 @@ static apr_status_t open_stream(h2_proxy static apr_status_t submit_stream(h2_proxy_session *session, h2_proxy_stream *stream) { - h2_ngheader *hd; + h2_proxy_ngheader *hd; nghttp2_data_provider *pp = NULL; nghttp2_data_provider provider; - int rv; + int rv, may_have_request_body = 1; apr_status_t status; - hd = h2_util_ngheader_make_req(stream->pool, stream->req); + hd = h2_proxy_util_nghd_make_req(stream->pool, stream->req); - status = ap_get_brigade(stream->r->input_filters, stream->input, - AP_MODE_READBYTES, APR_NONBLOCK_READ, - APR_BUCKET_BUFF_SIZE); - if ((status == APR_SUCCESS && !APR_BUCKET_IS_EOS(APR_BRIGADE_FIRST(stream->input))) - || APR_STATUS_IS_EAGAIN(status)) { - /* there might be data coming */ + /* If we expect a 100-continue response, we must refrain from reading + any input until we get it. Reading the input will possibly trigger + HTTP_IN filter to generate the 100-continue itself. */ + if (stream->waiting_on_100 || stream->waiting_on_ping) { + /* make a small test if we get an EOF/EOS immediately */ + status = ap_get_brigade(stream->r->input_filters, stream->input, + AP_MODE_READBYTES, APR_NONBLOCK_READ, + APR_BUCKET_BUFF_SIZE); + may_have_request_body = APR_STATUS_IS_EAGAIN(status) + || (status == APR_SUCCESS + && !APR_BUCKET_IS_EOS(APR_BRIGADE_FIRST(stream->input))); + } + + if (may_have_request_body) { provider.source.fd = 0; provider.source.ptr = NULL; - provider.read_callback = stream_data_read; + provider.read_callback = stream_request_data; pp = &provider; } rv = nghttp2_submit_request(session->ngh2, NULL, hd->nv, hd->nvlen, pp, stream); - if (APLOGcdebug(session->c)) { - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03363) - "h2_proxy_session(%s): submit %s%s -> %d", - session->id, stream->req->authority, stream->req->path, - rv); - } - + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03363) + "h2_proxy_session(%s): submit %s%s -> %d", + session->id, stream->req->authority, stream->req->path, + rv); if (rv > 0) { stream->id = rv; stream->state = H2_STREAM_ST_OPEN; - h2_ihash_add(session->streams, stream); + h2_proxy_ihash_add(session->streams, stream); dispatch_event(session, H2_PROXYS_EV_STREAM_SUBMITTED, rv, NULL); return APR_SUCCESS; @@ -747,7 +900,7 @@ static apr_status_t h2_proxy_session_rea AP_MODE_READBYTES, block? APR_BLOCK_READ : APR_NONBLOCK_READ, 64 * 1024); - ap_log_cerror(APLOG_MARK, APLOG_TRACE2, status, session->c, + ap_log_cerror(APLOG_MARK, APLOG_TRACE3, status, session->c, "h2_proxy_session(%s): read from conn", session->id); if (socket && save_timeout != -1) { apr_socket_timeout_set(socket, save_timeout); @@ -788,6 +941,18 @@ apr_status_t h2_proxy_session_submit(h2_ return status; } +static void stream_resume(h2_proxy_stream *stream) +{ + h2_proxy_session *session = stream->session; + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, session->c, + "h2_proxy_stream(%s-%d): resuming", + session->id, stream->id); + stream->suspended = 0; + h2_proxy_iq_remove(session->suspended, stream->id); + nghttp2_session_resume_data(session->ngh2, stream->id); + dispatch_event(session, H2_PROXYS_EV_STREAM_RESUMED, 0, NULL); +} + static apr_status_t check_suspended(h2_proxy_session *session) { h2_proxy_stream *stream; @@ -798,17 +963,16 @@ static apr_status_t check_suspended(h2_p stream_id = session->suspended->elts[i]; stream = nghttp2_session_get_stream_user_data(session->ngh2, stream_id); if (stream) { - status = ap_get_brigade(stream->r->input_filters, stream->input, - AP_MODE_READBYTES, APR_NONBLOCK_READ, - APR_BUCKET_BUFF_SIZE); + if (stream->waiting_on_100 || stream->waiting_on_ping) { + status = APR_EAGAIN; + } + else { + status = ap_get_brigade(stream->r->input_filters, stream->input, + AP_MODE_READBYTES, APR_NONBLOCK_READ, + APR_BUCKET_BUFF_SIZE); + } if (status == APR_SUCCESS && !APR_BRIGADE_EMPTY(stream->input)) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE2, status, session->c, - "h2_proxy_stream(%s-%d): resuming", - session->id, stream_id); - stream->suspended = 0; - h2_iq_remove(session->suspended, stream_id); - nghttp2_session_resume_data(session->ngh2, stream_id); - dispatch_event(session, H2_PROXYS_EV_STREAM_RESUMED, 0, NULL); + stream_resume(stream); check_suspended(session); return APR_SUCCESS; } @@ -816,15 +980,14 @@ static apr_status_t check_suspended(h2_p ap_log_cerror(APLOG_MARK, APLOG_WARNING, status, session->c, APLOGNO(03382) "h2_proxy_stream(%s-%d): check input", session->id, stream_id); - h2_iq_remove(session->suspended, stream_id); - dispatch_event(session, H2_PROXYS_EV_STREAM_RESUMED, 0, NULL); + stream_resume(stream); check_suspended(session); return APR_SUCCESS; } } else { /* gone? */ - h2_iq_remove(session->suspended, stream_id); + h2_proxy_iq_remove(session->suspended, stream_id); check_suspended(session); return APR_SUCCESS; } @@ -838,7 +1001,7 @@ static apr_status_t session_shutdown(h2_ apr_status_t status = APR_SUCCESS; const char *err = msg; - AP_DEBUG_ASSERT(session); + ap_assert(session); if (!err && reason) { err = nghttp2_strerror(reason); } @@ -893,7 +1056,7 @@ static void ev_init(h2_proxy_session *se { switch (session->state) { case H2_PROXYS_ST_INIT: - if (h2_ihash_empty(session->streams)) { + if (h2_proxy_ihash_empty(session->streams)) { transit(session, "init", H2_PROXYS_ST_IDLE); } else { @@ -1000,7 +1163,7 @@ static void ev_no_io(h2_proxy_session *s * CPU cycles. Ideally, we'd like to do a blocking read, but that * is not possible if we have scheduled tasks and wait * for them to produce something. */ - if (h2_ihash_empty(session->streams)) { + if (h2_proxy_ihash_empty(session->streams)) { if (!is_accepting_streams(session)) { /* We are no longer accepting new streams and have * finished processing existing ones. Time to leave. */ @@ -1049,16 +1212,19 @@ static void ev_stream_done(h2_proxy_sess if (stream) { int touched = (stream->data_sent || stream_id <= session->last_stream_id); - int complete = (stream->error_code == 0); + apr_status_t status = (stream->error_code == 0)? APR_SUCCESS : APR_EINVAL; ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03364) "h2_proxy_sesssion(%s): stream(%d) closed " - "(complete=%d, touched=%d)", - session->id, stream_id, complete, touched); + "(touched=%d, error=%d)", + session->id, stream_id, touched, stream->error_code); - if (complete && !stream->data_received) { + if (status != APR_SUCCESS) { + stream->r->status = 500; + } + else if (!stream->data_received) { apr_bucket *b; /* if the response had no body, this is the time to flush - * an empty brigade which will also "write" the resonse + * an empty brigade which will also write the resonse * headers */ h2_proxy_stream_end_headers_out(stream); stream->data_received = 1; @@ -1070,10 +1236,10 @@ static void ev_stream_done(h2_proxy_sess } stream->state = H2_STREAM_ST_CLOSED; - h2_ihash_remove(session->streams, stream_id); - h2_iq_remove(session->suspended, stream_id); + h2_proxy_ihash_remove(session->streams, stream_id); + h2_proxy_iq_remove(session->suspended, stream_id); if (session->done) { - session->done(session, stream->r, complete, touched); + session->done(session, stream->r, status, touched); } } @@ -1185,6 +1351,21 @@ static void dispatch_event(h2_proxy_sess } } +static int send_loop(h2_proxy_session *session) +{ + while (nghttp2_session_want_write(session->ngh2)) { + int rv = nghttp2_session_send(session->ngh2); + if (rv < 0 && nghttp2_is_fatal(rv)) { + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, session->c, + "h2_proxy_session(%s): write, rv=%d", session->id, rv); + dispatch_event(session, H2_PROXYS_EV_CONN_ERROR, rv, NULL); + break; + } + return 1; + } + return 0; +} + apr_status_t h2_proxy_session_process(h2_proxy_session *session) { apr_status_t status; @@ -1209,16 +1390,7 @@ run_loop: case H2_PROXYS_ST_BUSY: case H2_PROXYS_ST_LOCAL_SHUTDOWN: case H2_PROXYS_ST_REMOTE_SHUTDOWN: - while (nghttp2_session_want_write(session->ngh2)) { - int rv = nghttp2_session_send(session->ngh2); - if (rv < 0 && nghttp2_is_fatal(rv)) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, session->c, - "h2_proxy_session(%s): write, rv=%d", session->id, rv); - dispatch_event(session, H2_PROXYS_EV_CONN_ERROR, rv, NULL); - break; - } - have_written = 1; - } + have_written = send_loop(session); if (nghttp2_session_want_read(session->ngh2)) { status = h2_proxy_session_read(session, 0, 0); @@ -1247,7 +1419,7 @@ run_loop: } status = h2_proxy_session_read(session, 1, session->wait_timeout); - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, session->c, + ap_log_cerror(APLOG_MARK, APLOG_TRACE3, status, session->c, APLOGNO(03365) "h2_proxy_session(%s): WAIT read, timeout=%fms", session->id, (float)session->wait_timeout/1000.0); @@ -1295,28 +1467,71 @@ typedef struct { h2_proxy_request_done *done; } cleanup_iter_ctx; +static int cancel_iter(void *udata, void *val) +{ + cleanup_iter_ctx *ctx = udata; + h2_proxy_stream *stream = val; + nghttp2_submit_rst_stream(ctx->session->ngh2, NGHTTP2_FLAG_NONE, + stream->id, 0); + return 1; +} + +void h2_proxy_session_cancel_all(h2_proxy_session *session) +{ + if (!h2_proxy_ihash_empty(session->streams)) { + cleanup_iter_ctx ctx; + ctx.session = session; + ctx.done = session->done; + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03366) + "h2_proxy_session(%s): cancel %d streams", + session->id, (int)h2_proxy_ihash_count(session->streams)); + h2_proxy_ihash_iter(session->streams, cancel_iter, &ctx); + session_shutdown(session, 0, NULL); + } +} + static int done_iter(void *udata, void *val) { cleanup_iter_ctx *ctx = udata; h2_proxy_stream *stream = val; - int touched = (!ctx->session->last_stream_id || + int touched = (stream->data_sent || stream->id <= ctx->session->last_stream_id); - ctx->done(ctx->session, stream->r, 0, touched); + ctx->done(ctx->session, stream->r, APR_ECONNABORTED, touched); return 1; } void h2_proxy_session_cleanup(h2_proxy_session *session, h2_proxy_request_done *done) { - if (session->streams && !h2_ihash_empty(session->streams)) { + if (!h2_proxy_ihash_empty(session->streams)) { cleanup_iter_ctx ctx; ctx.session = session; ctx.done = done; - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03366) + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03519) "h2_proxy_session(%s): terminated, %d streams unfinished", - session->id, (int)h2_ihash_count(session->streams)); - h2_ihash_iter(session->streams, done_iter, &ctx); - h2_ihash_clear(session->streams); + session->id, (int)h2_proxy_ihash_count(session->streams)); + h2_proxy_ihash_iter(session->streams, done_iter, &ctx); + h2_proxy_ihash_clear(session->streams); + } +} + +static int ping_arrived_iter(void *udata, void *val) +{ + h2_proxy_stream *stream = val; + if (stream->waiting_on_ping) { + stream->waiting_on_ping = 0; + stream_resume(stream); + } + return 1; +} + +static void ping_arrived(h2_proxy_session *session) +{ + if (!h2_proxy_ihash_empty(session->streams)) { + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03470) + "h2_proxy_session(%s): ping arrived, unblocking streams", + session->id); + h2_proxy_ihash_iter(session->streams, ping_arrived_iter, &session); } } @@ -1347,13 +1562,13 @@ static int win_update_iter(void *udata, void h2_proxy_session_update_window(h2_proxy_session *session, conn_rec *c, apr_off_t bytes) { - if (session->streams && !h2_ihash_empty(session->streams)) { + if (!h2_proxy_ihash_empty(session->streams)) { win_update_ctx ctx; ctx.session = session; ctx.c = c; ctx.bytes = bytes; ctx.updated = 0; - h2_ihash_iter(session->streams, win_update_iter, &ctx); + h2_proxy_ihash_iter(session->streams, win_update_iter, &ctx); if (!ctx.updated) { /* could not find the stream any more, possibly closed, update diff -up --new-file httpd-2.4.23/modules/http2/h2_proxy_session.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_proxy_session.h --- httpd-2.4.23/modules/http2/h2_proxy_session.h 2016-06-13 11:58:07.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_proxy_session.h 2017-02-14 16:53:50.000000000 +0100 @@ -20,8 +20,18 @@ #include <nghttp2/nghttp2.h> -struct h2_iqueue; -struct h2_ihash_t; +struct h2_proxy_iqueue; +struct h2_proxy_ihash_t; + +typedef enum { + H2_STREAM_ST_IDLE, + H2_STREAM_ST_OPEN, + H2_STREAM_ST_RESV_LOCAL, + H2_STREAM_ST_RESV_REMOTE, + H2_STREAM_ST_CLOSED_INPUT, + H2_STREAM_ST_CLOSED_OUTPUT, + H2_STREAM_ST_CLOSED, +} h2_proxy_stream_state_t; typedef enum { H2_PROXYS_ST_INIT, /* send initial SETTINGS, etc. */ @@ -52,7 +62,7 @@ typedef enum { typedef struct h2_proxy_session h2_proxy_session; typedef void h2_proxy_request_done(h2_proxy_session *s, request_rec *r, - int complete, int touched); + apr_status_t status, int touched); struct h2_proxy_session { const char *id; @@ -63,6 +73,8 @@ struct h2_proxy_session { nghttp2_session *ngh2; /* the nghttp2 session itself */ unsigned int aborted : 1; + unsigned int check_ping : 1; + unsigned int h2_front : 1; /* if front-end connection is HTTP/2 */ h2_proxy_request_done *done; void *user_data; @@ -73,10 +85,11 @@ struct h2_proxy_session { h2_proxys_state state; apr_interval_time_t wait_timeout; - struct h2_ihash_t *streams; - struct h2_iqueue *suspended; + struct h2_proxy_ihash_t *streams; + struct h2_proxy_iqueue *suspended; apr_size_t remote_max_concurrent; int last_stream_id; /* last stream id processed by backend, or 0 */ + apr_time_t last_frame_received; apr_bucket_brigade *input; apr_bucket_brigade *output; @@ -84,6 +97,7 @@ struct h2_proxy_session { h2_proxy_session *h2_proxy_session_setup(const char *id, proxy_conn_rec *p_conn, proxy_server_conf *conf, + int h2_front, unsigned char window_bits_connection, unsigned char window_bits_stream, h2_proxy_request_done *done); @@ -101,6 +115,8 @@ apr_status_t h2_proxy_session_submit(h2_ */ apr_status_t h2_proxy_session_process(h2_proxy_session *s); +void h2_proxy_session_cancel_all(h2_proxy_session *s); + void h2_proxy_session_cleanup(h2_proxy_session *s, h2_proxy_request_done *done); void h2_proxy_session_update_window(h2_proxy_session *s, diff -up --new-file httpd-2.4.23/modules/http2/h2_proxy_util.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_proxy_util.c --- httpd-2.4.23/modules/http2/h2_proxy_util.c 2016-06-28 21:57:30.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_proxy_util.c 2017-04-10 17:04:55.000000000 +0200 @@ -14,20 +14,26 @@ */ #include <assert.h> +#include <apr_lib.h> #include <apr_strings.h> +#include <apr_thread_mutex.h> +#include <apr_thread_cond.h> #include <httpd.h> #include <http_core.h> #include <http_log.h> #include <http_request.h> +#include <mod_proxy.h> #include <nghttp2/nghttp2.h> #include "h2.h" #include "h2_proxy_util.h" +APLOG_USE_MODULE(proxy_http2); + /* h2_log2(n) iff n is a power of 2 */ -unsigned char h2_log2(apr_uint32_t n) +unsigned char h2_proxy_log2(int n) { int lz = 0; if (!n) { @@ -59,7 +65,7 @@ unsigned char h2_log2(apr_uint32_t n) /******************************************************************************* * ihash - hash for structs with int identifier ******************************************************************************/ -struct h2_ihash_t { +struct h2_proxy_ihash_t { apr_hash_t *hash; size_t ioff; }; @@ -69,31 +75,31 @@ static unsigned int ihash(const char *ke return (unsigned int)(*((int*)key)); } -h2_ihash_t *h2_ihash_create(apr_pool_t *pool, size_t offset_of_int) +h2_proxy_ihash_t *h2_proxy_ihash_create(apr_pool_t *pool, size_t offset_of_int) { - h2_ihash_t *ih = apr_pcalloc(pool, sizeof(h2_ihash_t)); + h2_proxy_ihash_t *ih = apr_pcalloc(pool, sizeof(h2_proxy_ihash_t)); ih->hash = apr_hash_make_custom(pool, ihash); ih->ioff = offset_of_int; return ih; } -size_t h2_ihash_count(h2_ihash_t *ih) +size_t h2_proxy_ihash_count(h2_proxy_ihash_t *ih) { return apr_hash_count(ih->hash); } -int h2_ihash_empty(h2_ihash_t *ih) +int h2_proxy_ihash_empty(h2_proxy_ihash_t *ih) { return apr_hash_count(ih->hash) == 0; } -void *h2_ihash_get(h2_ihash_t *ih, int id) +void *h2_proxy_ihash_get(h2_proxy_ihash_t *ih, int id) { return apr_hash_get(ih->hash, &id, sizeof(id)); } typedef struct { - h2_ihash_iter_t *iter; + h2_proxy_ihash_iter_t *iter; void *ctx; } iter_ctx; @@ -104,7 +110,7 @@ static int ihash_iter(void *ctx, const v return ictx->iter(ictx->ctx, (void*)val); /* why is this passed const?*/ } -int h2_ihash_iter(h2_ihash_t *ih, h2_ihash_iter_t *fn, void *ctx) +int h2_proxy_ihash_iter(h2_proxy_ihash_t *ih, h2_proxy_ihash_iter_t *fn, void *ctx) { iter_ctx ictx; ictx.iter = fn; @@ -112,30 +118,30 @@ int h2_ihash_iter(h2_ihash_t *ih, h2_iha return apr_hash_do(ihash_iter, &ictx, ih->hash); } -void h2_ihash_add(h2_ihash_t *ih, void *val) +void h2_proxy_ihash_add(h2_proxy_ihash_t *ih, void *val) { apr_hash_set(ih->hash, ((char *)val + ih->ioff), sizeof(int), val); } -void h2_ihash_remove(h2_ihash_t *ih, int id) +void h2_proxy_ihash_remove(h2_proxy_ihash_t *ih, int id) { apr_hash_set(ih->hash, &id, sizeof(id), NULL); } -void h2_ihash_remove_val(h2_ihash_t *ih, void *val) +void h2_proxy_ihash_remove_val(h2_proxy_ihash_t *ih, void *val) { int id = *((int*)((char *)val + ih->ioff)); apr_hash_set(ih->hash, &id, sizeof(id), NULL); } -void h2_ihash_clear(h2_ihash_t *ih) +void h2_proxy_ihash_clear(h2_proxy_ihash_t *ih) { apr_hash_clear(ih->hash); } typedef struct { - h2_ihash_t *ih; + h2_proxy_ihash_t *ih; void **buffer; size_t max; size_t len; @@ -151,7 +157,7 @@ static int collect_iter(void *x, void *v return 0; } -size_t h2_ihash_shift(h2_ihash_t *ih, void **buffer, size_t max) +size_t h2_proxy_ihash_shift(h2_proxy_ihash_t *ih, void **buffer, size_t max) { collect_ctx ctx; size_t i; @@ -160,15 +166,15 @@ size_t h2_ihash_shift(h2_ihash_t *ih, vo ctx.buffer = buffer; ctx.max = max; ctx.len = 0; - h2_ihash_iter(ih, collect_iter, &ctx); + h2_proxy_ihash_iter(ih, collect_iter, &ctx); for (i = 0; i < ctx.len; ++i) { - h2_ihash_remove_val(ih, buffer[i]); + h2_proxy_ihash_remove_val(ih, buffer[i]); } return ctx.len; } typedef struct { - h2_ihash_t *ih; + h2_proxy_ihash_t *ih; int *buffer; size_t max; size_t len; @@ -184,7 +190,7 @@ static int icollect_iter(void *x, void * return 0; } -size_t h2_ihash_ishift(h2_ihash_t *ih, int *buffer, size_t max) +size_t h2_proxy_ihash_ishift(h2_proxy_ihash_t *ih, int *buffer, size_t max) { icollect_ctx ctx; size_t i; @@ -193,9 +199,9 @@ size_t h2_ihash_ishift(h2_ihash_t *ih, i ctx.buffer = buffer; ctx.max = max; ctx.len = 0; - h2_ihash_iter(ih, icollect_iter, &ctx); + h2_proxy_ihash_iter(ih, icollect_iter, &ctx); for (i = 0; i < ctx.len; ++i) { - h2_ihash_remove(ih, buffer[i]); + h2_proxy_ihash_remove(ih, buffer[i]); } return ctx.len; } @@ -204,16 +210,16 @@ size_t h2_ihash_ishift(h2_ihash_t *ih, i * iqueue - sorted list of int ******************************************************************************/ -static void iq_grow(h2_iqueue *q, int nlen); -static void iq_swap(h2_iqueue *q, int i, int j); -static int iq_bubble_up(h2_iqueue *q, int i, int top, - h2_iq_cmp *cmp, void *ctx); -static int iq_bubble_down(h2_iqueue *q, int i, int bottom, - h2_iq_cmp *cmp, void *ctx); +static void iq_grow(h2_proxy_iqueue *q, int nlen); +static void iq_swap(h2_proxy_iqueue *q, int i, int j); +static int iq_bubble_up(h2_proxy_iqueue *q, int i, int top, + h2_proxy_iq_cmp *cmp, void *ctx); +static int iq_bubble_down(h2_proxy_iqueue *q, int i, int bottom, + h2_proxy_iq_cmp *cmp, void *ctx); -h2_iqueue *h2_iq_create(apr_pool_t *pool, int capacity) +h2_proxy_iqueue *h2_proxy_iq_create(apr_pool_t *pool, int capacity) { - h2_iqueue *q = apr_pcalloc(pool, sizeof(h2_iqueue)); + h2_proxy_iqueue *q = apr_pcalloc(pool, sizeof(h2_proxy_iqueue)); if (q) { q->pool = pool; iq_grow(q, capacity); @@ -222,18 +228,18 @@ h2_iqueue *h2_iq_create(apr_pool_t *pool return q; } -int h2_iq_empty(h2_iqueue *q) +int h2_proxy_iq_empty(h2_proxy_iqueue *q) { return q->nelts == 0; } -int h2_iq_count(h2_iqueue *q) +int h2_proxy_iq_count(h2_proxy_iqueue *q) { return q->nelts; } -void h2_iq_add(h2_iqueue *q, int sid, h2_iq_cmp *cmp, void *ctx) +void h2_proxy_iq_add(h2_proxy_iqueue *q, int sid, h2_proxy_iq_cmp *cmp, void *ctx) { int i; @@ -251,7 +257,7 @@ void h2_iq_add(h2_iqueue *q, int sid, h2 } } -int h2_iq_remove(h2_iqueue *q, int sid) +int h2_proxy_iq_remove(h2_proxy_iqueue *q, int sid) { int i; for (i = 0; i < q->nelts; ++i) { @@ -271,15 +277,15 @@ int h2_iq_remove(h2_iqueue *q, int sid) return 0; } -void h2_iq_clear(h2_iqueue *q) +void h2_proxy_iq_clear(h2_proxy_iqueue *q) { q->nelts = 0; } -void h2_iq_sort(h2_iqueue *q, h2_iq_cmp *cmp, void *ctx) +void h2_proxy_iq_sort(h2_proxy_iqueue *q, h2_proxy_iq_cmp *cmp, void *ctx) { /* Assume that changes in ordering are minimal. This needs, - * best case, q->nelts - 1 comparisions to check that nothing + * best case, q->nelts - 1 comparisons to check that nothing * changed. */ if (q->nelts > 0) { @@ -304,7 +310,7 @@ void h2_iq_sort(h2_iqueue *q, h2_iq_cmp } -int h2_iq_shift(h2_iqueue *q) +int h2_proxy_iq_shift(h2_proxy_iqueue *q) { int sid; @@ -319,7 +325,7 @@ int h2_iq_shift(h2_iqueue *q) return sid; } -static void iq_grow(h2_iqueue *q, int nlen) +static void iq_grow(h2_proxy_iqueue *q, int nlen) { if (nlen > q->nalloc) { int *nq = apr_pcalloc(q->pool, sizeof(int) * nlen); @@ -339,15 +345,15 @@ static void iq_grow(h2_iqueue *q, int nl } } -static void iq_swap(h2_iqueue *q, int i, int j) +static void iq_swap(h2_proxy_iqueue *q, int i, int j) { int x = q->elts[i]; q->elts[i] = q->elts[j]; q->elts[j] = x; } -static int iq_bubble_up(h2_iqueue *q, int i, int top, - h2_iq_cmp *cmp, void *ctx) +static int iq_bubble_up(h2_proxy_iqueue *q, int i, int top, + h2_proxy_iq_cmp *cmp, void *ctx) { int prev; while (((prev = (q->nalloc + i - 1) % q->nalloc), i != top) @@ -358,8 +364,8 @@ static int iq_bubble_up(h2_iqueue *q, in return i; } -static int iq_bubble_down(h2_iqueue *q, int i, int bottom, - h2_iq_cmp *cmp, void *ctx) +static int iq_bubble_down(h2_proxy_iqueue *q, int i, int bottom, + h2_proxy_iq_cmp *cmp, void *ctx) { int next; while (((next = (q->nalloc + i + 1) % q->nalloc), i != bottom) @@ -371,7 +377,7 @@ static int iq_bubble_down(h2_iqueue *q, } /******************************************************************************* - * h2_ngheader + * h2_proxy_ngheader ******************************************************************************/ #define H2_HD_MATCH_LIT_CS(l, name) \ ((strlen(name) == sizeof(l) - 1) && !apr_strnatcasecmp(l, name)) @@ -397,7 +403,7 @@ static int count_header(void *ctx, const #define NV_ADD_LIT_CS(nv, k, v) add_header(nv, k, sizeof(k) - 1, v, strlen(v)) #define NV_ADD_CS_CS(nv, k, v) add_header(nv, k, strlen(k), v, strlen(v)) -static int add_header(h2_ngheader *ngh, +static int add_header(h2_proxy_ngheader *ngh, const char *key, size_t key_len, const char *value, size_t val_len) { @@ -418,23 +424,23 @@ static int add_table_header(void *ctx, c return 1; } -h2_ngheader *h2_util_ngheader_make_req(apr_pool_t *p, - const struct h2_request *req) +h2_proxy_ngheader *h2_proxy_util_nghd_make_req(apr_pool_t *p, + const h2_proxy_request *req) { - h2_ngheader *ngh; + h2_proxy_ngheader *ngh; size_t n; - AP_DEBUG_ASSERT(req); - AP_DEBUG_ASSERT(req->scheme); - AP_DEBUG_ASSERT(req->authority); - AP_DEBUG_ASSERT(req->path); - AP_DEBUG_ASSERT(req->method); + ap_assert(req); + ap_assert(req->scheme); + ap_assert(req->authority); + ap_assert(req->path); + ap_assert(req->method); n = 4; apr_table_do(count_header, &n, req->headers, NULL); - ngh = apr_pcalloc(p, sizeof(h2_ngheader)); + ngh = apr_pcalloc(p, sizeof(h2_proxy_ngheader)); ngh->nv = apr_pcalloc(p, n * sizeof(nghttp2_nv)); NV_ADD_LIT_CS(ngh, ":scheme", req->scheme); NV_ADD_LIT_CS(ngh, ":authority", req->authority); @@ -458,7 +464,6 @@ typedef struct { #define H2_LIT_ARGS(a) (a),H2_ALEN(a) static literal IgnoredRequestHeaders[] = { - H2_DEF_LITERAL("expect"), H2_DEF_LITERAL("upgrade"), H2_DEF_LITERAL("connection"), H2_DEF_LITERAL("keep-alive"), @@ -485,18 +490,18 @@ static int ignore_header(const literal * return 0; } -static int h2_req_ignore_header(const char *name, size_t len) +static int h2_proxy_req_ignore_header(const char *name, size_t len) { return ignore_header(H2_LIT_ARGS(IgnoredRequestHeaders), name, len); } int h2_proxy_res_ignore_header(const char *name, size_t len) { - return (h2_req_ignore_header(name, len) + return (h2_proxy_req_ignore_header(name, len) || ignore_header(H2_LIT_ARGS(IgnoredProxyRespHds), name, len)); } -void h2_util_camel_case_header(char *s, size_t len) +void h2_proxy_util_camel_case_header(char *s, size_t len) { size_t start = 1; size_t i; @@ -528,7 +533,7 @@ static apr_status_t h2_headers_add_h1(ap { char *hname, *hvalue; - if (h2_req_ignore_header(name, nlen)) { + if (h2_proxy_req_ignore_header(name, nlen)) { return APR_SUCCESS; } else if (H2_HD_MATCH_LIT("cookie", name, nlen)) { @@ -553,20 +558,19 @@ static apr_status_t h2_headers_add_h1(ap hname = apr_pstrndup(pool, name, nlen); hvalue = apr_pstrndup(pool, value, vlen); - h2_util_camel_case_header(hname, nlen); + h2_proxy_util_camel_case_header(hname, nlen); apr_table_mergen(headers, hname, hvalue); return APR_SUCCESS; } -static h2_request *h2_req_createn(int id, apr_pool_t *pool, const char *method, +static h2_proxy_request *h2_proxy_req_createn(int id, apr_pool_t *pool, const char *method, const char *scheme, const char *authority, const char *path, apr_table_t *header, int serialize) { - h2_request *req = apr_pcalloc(pool, sizeof(h2_request)); + h2_proxy_request *req = apr_pcalloc(pool, sizeof(h2_proxy_request)); - req->id = id; req->method = method; req->scheme = scheme; req->authority = authority; @@ -578,9 +582,9 @@ static h2_request *h2_req_createn(int id return req; } -h2_request *h2_req_create(int id, apr_pool_t *pool, int serialize) +h2_proxy_request *h2_proxy_req_create(int id, apr_pool_t *pool, int serialize) { - return h2_req_createn(id, pool, NULL, NULL, NULL, NULL, NULL, serialize); + return h2_proxy_req_createn(id, pool, NULL, NULL, NULL, NULL, NULL, serialize); } typedef struct { @@ -592,13 +596,13 @@ static int set_h1_header(void *ctx, cons { h1_ctx *x = ctx; size_t klen = strlen(key); - if (!h2_req_ignore_header(key, klen)) { + if (!h2_proxy_req_ignore_header(key, klen)) { h2_headers_add_h1(x->headers, x->pool, key, klen, value, strlen(value)); } return 1; } -apr_status_t h2_req_make(h2_request *req, apr_pool_t *pool, +apr_status_t h2_proxy_req_make(h2_proxy_request *req, apr_pool_t *pool, const char *method, const char *scheme, const char *authority, const char *path, apr_table_t *headers) @@ -610,10 +614,10 @@ apr_status_t h2_req_make(h2_request *req req->authority = authority; req->path = path; - AP_DEBUG_ASSERT(req->scheme); - AP_DEBUG_ASSERT(req->authority); - AP_DEBUG_ASSERT(req->path); - AP_DEBUG_ASSERT(req->method); + ap_assert(req->scheme); + ap_assert(req->authority); + ap_assert(req->path); + ap_assert(req->method); x.pool = pool; x.headers = req->headers; @@ -625,7 +629,7 @@ apr_status_t h2_req_make(h2_request *req * frame logging ******************************************************************************/ -int h2_util_frame_print(const nghttp2_frame *frame, char *buffer, size_t maxlen) +int h2_proxy_util_frame_print(const nghttp2_frame *frame, char *buffer, size_t maxlen) { char scratch[128]; size_t s_len = sizeof(scratch)/sizeof(scratch[0]); @@ -703,3 +707,630 @@ int h2_util_frame_print(const nghttp2_fr frame->hd.flags, frame->hd.stream_id); } } + +/******************************************************************************* + * link header handling + ******************************************************************************/ + +typedef struct { + apr_pool_t *pool; + request_rec *r; + proxy_dir_conf *conf; + const char *s; + int slen; + int i; + const char *server_uri; + int su_len; + const char *real_backend_uri; + int rbu_len; + const char *p_server_uri; + int psu_len; + int link_start; + int link_end; +} link_ctx; + +static int attr_char(char c) +{ + switch (c) { + case '!': + case '#': + case '$': + case '&': + case '+': + case '-': + case '.': + case '^': + case '_': + case '`': + case '|': + case '~': + return 1; + default: + return apr_isalnum(c); + } +} + +static int ptoken_char(char c) +{ + switch (c) { + case '!': + case '#': + case '$': + case '&': + case '\'': + case '(': + case ')': + case '*': + case '+': + case '-': + case '.': + case '/': + case ':': + case '<': + case '=': + case '>': + case '?': + case '@': + case '[': + case ']': + case '^': + case '_': + case '`': + case '{': + case '|': + case '}': + case '~': + return 1; + default: + return apr_isalnum(c); + } +} + +static int skip_ws(link_ctx *ctx) +{ + char c; + while (ctx->i < ctx->slen + && (((c = ctx->s[ctx->i]) == ' ') || (c == '\t'))) { + ++ctx->i; + } + return (ctx->i < ctx->slen); +} + +static int find_chr(link_ctx *ctx, char c, int *pidx) +{ + int j; + for (j = ctx->i; j < ctx->slen; ++j) { + if (ctx->s[j] == c) { + *pidx = j; + return 1; + } + } + return 0; +} + +static int read_chr(link_ctx *ctx, char c) +{ + if (ctx->i < ctx->slen && ctx->s[ctx->i] == c) { + ++ctx->i; + return 1; + } + return 0; +} + +static int skip_qstring(link_ctx *ctx) +{ + if (skip_ws(ctx) && read_chr(ctx, '\"')) { + int end; + if (find_chr(ctx, '\"', &end)) { + ctx->i = end + 1; + return 1; + } + } + return 0; +} + +static int skip_ptoken(link_ctx *ctx) +{ + if (skip_ws(ctx)) { + int i; + for (i = ctx->i; i < ctx->slen && ptoken_char(ctx->s[i]); ++i) { + /* nop */ + } + if (i > ctx->i) { + ctx->i = i; + return 1; + } + } + return 0; +} + + +static int read_link(link_ctx *ctx) +{ + ctx->link_start = ctx->link_end = 0; + if (skip_ws(ctx) && read_chr(ctx, '<')) { + int end; + if (find_chr(ctx, '>', &end)) { + ctx->link_start = ctx->i; + ctx->link_end = end; + ctx->i = end + 1; + return 1; + } + } + return 0; +} + +static int skip_pname(link_ctx *ctx) +{ + if (skip_ws(ctx)) { + int i; + for (i = ctx->i; i < ctx->slen && attr_char(ctx->s[i]); ++i) { + /* nop */ + } + if (i > ctx->i) { + ctx->i = i; + return 1; + } + } + return 0; +} + +static int skip_pvalue(link_ctx *ctx) +{ + if (skip_ws(ctx) && read_chr(ctx, '=')) { + if (skip_qstring(ctx) || skip_ptoken(ctx)) { + return 1; + } + } + return 0; +} + +static int skip_param(link_ctx *ctx) +{ + if (skip_ws(ctx) && read_chr(ctx, ';')) { + if (skip_pname(ctx)) { + skip_pvalue(ctx); /* value is optional */ + return 1; + } + } + return 0; +} + +static int read_sep(link_ctx *ctx) +{ + if (skip_ws(ctx) && read_chr(ctx, ',')) { + return 1; + } + return 0; +} + +static size_t subst_str(link_ctx *ctx, int start, int end, const char *ns) +{ + int olen, nlen, plen; + int delta; + char *p; + + olen = end - start; + nlen = (int)strlen(ns); + delta = nlen - olen; + plen = ctx->slen + delta + 1; + p = apr_pcalloc(ctx->pool, plen); + strncpy(p, ctx->s, start); + strncpy(p + start, ns, nlen); + strcpy(p + start + nlen, ctx->s + end); + ctx->s = p; + ctx->slen = (int)strlen(p); + if (ctx->i >= end) { + ctx->i += delta; + } + return nlen; +} + +static void map_link(link_ctx *ctx) +{ + if (ctx->link_start < ctx->link_end) { + char buffer[HUGE_STRING_LEN]; + int need_len, link_len, buffer_len, prepend_p_server; + const char *mapped; + + buffer[0] = '\0'; + buffer_len = 0; + link_len = ctx->link_end - ctx->link_start; + need_len = link_len + 1; + prepend_p_server = (ctx->s[ctx->link_start] == '/'); + if (prepend_p_server) { + /* common to use relative uris in link header, for mappings + * to work need to prefix the backend server uri */ + need_len += ctx->psu_len; + strncpy(buffer, ctx->p_server_uri, sizeof(buffer)); + buffer_len = ctx->psu_len; + } + if (need_len > sizeof(buffer)) { + ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, ctx->r, APLOGNO(03482) + "link_reverse_map uri too long, skipped: %s", ctx->s); + return; + } + strncpy(buffer + buffer_len, ctx->s + ctx->link_start, link_len); + buffer_len += link_len; + buffer[buffer_len] = '\0'; + if (!prepend_p_server + && strcmp(ctx->real_backend_uri, ctx->p_server_uri) + && !strncmp(buffer, ctx->real_backend_uri, ctx->rbu_len)) { + /* the server uri and our local proxy uri we use differ, for mapping + * to work, we need to use the proxy uri */ + int path_start = ctx->link_start + ctx->rbu_len; + link_len -= ctx->rbu_len; + strcpy(buffer, ctx->p_server_uri); + strncpy(buffer + ctx->psu_len, ctx->s + path_start, link_len); + buffer_len = ctx->psu_len + link_len; + buffer[buffer_len] = '\0'; + } + mapped = ap_proxy_location_reverse_map(ctx->r, ctx->conf, buffer); + ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, ctx->r, + "reverse_map[%s] %s --> %s", ctx->p_server_uri, buffer, mapped); + if (mapped != buffer) { + if (prepend_p_server) { + if (ctx->server_uri == NULL) { + ctx->server_uri = ap_construct_url(ctx->pool, "", ctx->r); + ctx->su_len = (int)strlen(ctx->server_uri); + } + if (!strncmp(mapped, ctx->server_uri, ctx->su_len)) { + mapped += ctx->su_len; + } + } + subst_str(ctx, ctx->link_start, ctx->link_end, mapped); + } + } +} + +/* RFC 5988 <https://tools.ietf.org/html/rfc5988#section-6.2.1> + Link = "Link" ":" #link-value + link-value = "<" URI-Reference ">" *( ";" link-param ) + link-param = ( ( "rel" "=" relation-types ) + | ( "anchor" "=" <"> URI-Reference <"> ) + | ( "rev" "=" relation-types ) + | ( "hreflang" "=" Language-Tag ) + | ( "media" "=" ( MediaDesc | ( <"> MediaDesc <"> ) ) ) + | ( "title" "=" quoted-string ) + | ( "title*" "=" ext-value ) + | ( "type" "=" ( media-type | quoted-mt ) ) + | ( link-extension ) ) + link-extension = ( parmname [ "=" ( ptoken | quoted-string ) ] ) + | ( ext-name-star "=" ext-value ) + ext-name-star = parmname "*" ; reserved for RFC2231-profiled + ; extensions. Whitespace NOT + ; allowed in between. + ptoken = 1*ptokenchar + ptokenchar = "!" | "#" | "$" | "%" | "&" | "'" | "(" + | ")" | "*" | "+" | "-" | "." | "/" | DIGIT + | ":" | "<" | "=" | ">" | "?" | "@" | ALPHA + | "[" | "]" | "^" | "_" | "`" | "{" | "|" + | "}" | "~" + media-type = type-name "/" subtype-name + quoted-mt = <"> media-type <"> + relation-types = relation-type + | <"> relation-type *( 1*SP relation-type ) <"> + relation-type = reg-rel-type | ext-rel-type + reg-rel-type = LOALPHA *( LOALPHA | DIGIT | "." | "-" ) + ext-rel-type = URI + + and from <https://tools.ietf.org/html/rfc5987> + parmname = 1*attr-char + attr-char = ALPHA / DIGIT + / "!" / "#" / "$" / "&" / "+" / "-" / "." + / "^" / "_" / "`" / "|" / "~" + */ + +const char *h2_proxy_link_reverse_map(request_rec *r, + proxy_dir_conf *conf, + const char *real_backend_uri, + const char *proxy_server_uri, + const char *s) +{ + link_ctx ctx; + + if (r->proxyreq != PROXYREQ_REVERSE) { + return s; + } + memset(&ctx, 0, sizeof(ctx)); + ctx.r = r; + ctx.pool = r->pool; + ctx.conf = conf; + ctx.real_backend_uri = real_backend_uri; + ctx.rbu_len = (int)strlen(ctx.real_backend_uri); + ctx.p_server_uri = proxy_server_uri; + ctx.psu_len = (int)strlen(ctx.p_server_uri); + ctx.s = s; + ctx.slen = (int)strlen(s); + while (read_link(&ctx)) { + while (skip_param(&ctx)) { + /* nop */ + } + map_link(&ctx); + if (!read_sep(&ctx)) { + break; + } + } + ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, + "link_reverse_map %s --> %s", s, ctx.s); + return ctx.s; +} + +/******************************************************************************* + * FIFO queue + ******************************************************************************/ + +struct h2_proxy_fifo { + void **elems; + int nelems; + int set; + int head; + int count; + int aborted; + apr_thread_mutex_t *lock; + apr_thread_cond_t *not_empty; + apr_thread_cond_t *not_full; +}; + +static int nth_index(h2_proxy_fifo *fifo, int n) +{ + return (fifo->head + n) % fifo->nelems; +} + +static apr_status_t fifo_destroy(void *data) +{ + h2_proxy_fifo *fifo = data; + + apr_thread_cond_destroy(fifo->not_empty); + apr_thread_cond_destroy(fifo->not_full); + apr_thread_mutex_destroy(fifo->lock); + + return APR_SUCCESS; +} + +static int index_of(h2_proxy_fifo *fifo, void *elem) +{ + int i; + + for (i = 0; i < fifo->count; ++i) { + if (elem == fifo->elems[nth_index(fifo, i)]) { + return i; + } + } + return -1; +} + +static apr_status_t create_int(h2_proxy_fifo **pfifo, apr_pool_t *pool, + int capacity, int as_set) +{ + apr_status_t rv; + h2_proxy_fifo *fifo; + + fifo = apr_pcalloc(pool, sizeof(*fifo)); + if (fifo == NULL) { + return APR_ENOMEM; + } + + rv = apr_thread_mutex_create(&fifo->lock, + APR_THREAD_MUTEX_UNNESTED, pool); + if (rv != APR_SUCCESS) { + return rv; + } + + rv = apr_thread_cond_create(&fifo->not_empty, pool); + if (rv != APR_SUCCESS) { + return rv; + } + + rv = apr_thread_cond_create(&fifo->not_full, pool); + if (rv != APR_SUCCESS) { + return rv; + } + + fifo->elems = apr_pcalloc(pool, capacity * sizeof(void*)); + if (fifo->elems == NULL) { + return APR_ENOMEM; + } + fifo->nelems = capacity; + fifo->set = as_set; + + *pfifo = fifo; + apr_pool_cleanup_register(pool, fifo, fifo_destroy, apr_pool_cleanup_null); + + return APR_SUCCESS; +} + +apr_status_t h2_proxy_fifo_create(h2_proxy_fifo **pfifo, apr_pool_t *pool, int capacity) +{ + return create_int(pfifo, pool, capacity, 0); +} + +apr_status_t h2_proxy_fifo_set_create(h2_proxy_fifo **pfifo, apr_pool_t *pool, int capacity) +{ + return create_int(pfifo, pool, capacity, 1); +} + +apr_status_t h2_proxy_fifo_term(h2_proxy_fifo *fifo) +{ + apr_status_t rv; + if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) { + fifo->aborted = 1; + apr_thread_mutex_unlock(fifo->lock); + } + return rv; +} + +apr_status_t h2_proxy_fifo_interrupt(h2_proxy_fifo *fifo) +{ + apr_status_t rv; + if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) { + apr_thread_cond_broadcast(fifo->not_empty); + apr_thread_cond_broadcast(fifo->not_full); + apr_thread_mutex_unlock(fifo->lock); + } + return rv; +} + +int h2_proxy_fifo_count(h2_proxy_fifo *fifo) +{ + return fifo->count; +} + +int h2_proxy_fifo_capacity(h2_proxy_fifo *fifo) +{ + return fifo->nelems; +} + +static apr_status_t check_not_empty(h2_proxy_fifo *fifo, int block) +{ + if (fifo->count == 0) { + if (!block) { + return APR_EAGAIN; + } + while (fifo->count == 0) { + if (fifo->aborted) { + return APR_EOF; + } + apr_thread_cond_wait(fifo->not_empty, fifo->lock); + } + } + return APR_SUCCESS; +} + +static apr_status_t fifo_push(h2_proxy_fifo *fifo, void *elem, int block) +{ + apr_status_t rv; + + if (fifo->aborted) { + return APR_EOF; + } + + if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) { + if (fifo->set && index_of(fifo, elem) >= 0) { + /* set mode, elem already member */ + apr_thread_mutex_unlock(fifo->lock); + return APR_EEXIST; + } + else if (fifo->count == fifo->nelems) { + if (block) { + while (fifo->count == fifo->nelems) { + if (fifo->aborted) { + apr_thread_mutex_unlock(fifo->lock); + return APR_EOF; + } + apr_thread_cond_wait(fifo->not_full, fifo->lock); + } + } + else { + apr_thread_mutex_unlock(fifo->lock); + return APR_EAGAIN; + } + } + + ap_assert(fifo->count < fifo->nelems); + fifo->elems[nth_index(fifo, fifo->count)] = elem; + ++fifo->count; + if (fifo->count == 1) { + apr_thread_cond_broadcast(fifo->not_empty); + } + apr_thread_mutex_unlock(fifo->lock); + } + return rv; +} + +apr_status_t h2_proxy_fifo_push(h2_proxy_fifo *fifo, void *elem) +{ + return fifo_push(fifo, elem, 1); +} + +apr_status_t h2_proxy_fifo_try_push(h2_proxy_fifo *fifo, void *elem) +{ + return fifo_push(fifo, elem, 0); +} + +static void *pull_head(h2_proxy_fifo *fifo) +{ + void *elem; + + ap_assert(fifo->count > 0); + elem = fifo->elems[fifo->head]; + --fifo->count; + if (fifo->count > 0) { + fifo->head = nth_index(fifo, 1); + if (fifo->count+1 == fifo->nelems) { + apr_thread_cond_broadcast(fifo->not_full); + } + } + return elem; +} + +static apr_status_t fifo_pull(h2_proxy_fifo *fifo, void **pelem, int block) +{ + apr_status_t rv; + + if (fifo->aborted) { + return APR_EOF; + } + + if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) { + if ((rv = check_not_empty(fifo, block)) != APR_SUCCESS) { + apr_thread_mutex_unlock(fifo->lock); + *pelem = NULL; + return rv; + } + + ap_assert(fifo->count > 0); + *pelem = pull_head(fifo); + + apr_thread_mutex_unlock(fifo->lock); + } + return rv; +} + +apr_status_t h2_proxy_fifo_pull(h2_proxy_fifo *fifo, void **pelem) +{ + return fifo_pull(fifo, pelem, 1); +} + +apr_status_t h2_proxy_fifo_try_pull(h2_proxy_fifo *fifo, void **pelem) +{ + return fifo_pull(fifo, pelem, 0); +} + +apr_status_t h2_proxy_fifo_remove(h2_proxy_fifo *fifo, void *elem) +{ + apr_status_t rv; + + if (fifo->aborted) { + return APR_EOF; + } + + if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) { + int i, rc; + void *e; + + rc = 0; + for (i = 0; i < fifo->count; ++i) { + e = fifo->elems[nth_index(fifo, i)]; + if (e == elem) { + ++rc; + } + else if (rc) { + fifo->elems[nth_index(fifo, i-rc)] = e; + } + } + if (rc) { + fifo->count -= rc; + if (fifo->count + rc == fifo->nelems) { + apr_thread_cond_broadcast(fifo->not_full); + } + rv = APR_SUCCESS; + } + else { + rv = APR_EAGAIN; + } + + apr_thread_mutex_unlock(fifo->lock); + } + return rv; +} diff -up --new-file httpd-2.4.23/modules/http2/h2_proxy_util.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_proxy_util.h --- httpd-2.4.23/modules/http2/h2_proxy_util.h 2016-06-28 21:57:30.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_proxy_util.h 2017-04-10 17:04:55.000000000 +0200 @@ -19,27 +19,27 @@ /******************************************************************************* * some debugging/format helpers ******************************************************************************/ -struct h2_request; +struct h2_proxy_request; struct nghttp2_frame; -int h2_util_frame_print(const nghttp2_frame *frame, char *buffer, size_t maxlen); +int h2_proxy_util_frame_print(const nghttp2_frame *frame, char *buffer, size_t maxlen); /******************************************************************************* * ihash - hash for structs with int identifier ******************************************************************************/ -typedef struct h2_ihash_t h2_ihash_t; -typedef int h2_ihash_iter_t(void *ctx, void *val); +typedef struct h2_proxy_ihash_t h2_proxy_ihash_t; +typedef int h2_proxy_ihash_iter_t(void *ctx, void *val); /** * Create a hash for structures that have an identifying int member. * @param pool the pool to use * @param offset_of_int the offsetof() the int member in the struct */ -h2_ihash_t *h2_ihash_create(apr_pool_t *pool, size_t offset_of_int); +h2_proxy_ihash_t *h2_proxy_ihash_create(apr_pool_t *pool, size_t offset_of_int); -size_t h2_ihash_count(h2_ihash_t *ih); -int h2_ihash_empty(h2_ihash_t *ih); -void *h2_ihash_get(h2_ihash_t *ih, int id); +size_t h2_proxy_ihash_count(h2_proxy_ihash_t *ih); +int h2_proxy_ihash_empty(h2_proxy_ihash_t *ih); +void *h2_proxy_ihash_get(h2_proxy_ihash_t *ih, int id); /** * Iterate over the hash members (without defined order) and invoke @@ -49,26 +49,26 @@ void *h2_ihash_get(h2_ihash_t *ih, int i * @param ctx user supplied data passed into each iteration call * @return 0 if one iteration returned 0, otherwise != 0 */ -int h2_ihash_iter(h2_ihash_t *ih, h2_ihash_iter_t *fn, void *ctx); +int h2_proxy_ihash_iter(h2_proxy_ihash_t *ih, h2_proxy_ihash_iter_t *fn, void *ctx); -void h2_ihash_add(h2_ihash_t *ih, void *val); -void h2_ihash_remove(h2_ihash_t *ih, int id); -void h2_ihash_remove_val(h2_ihash_t *ih, void *val); -void h2_ihash_clear(h2_ihash_t *ih); +void h2_proxy_ihash_add(h2_proxy_ihash_t *ih, void *val); +void h2_proxy_ihash_remove(h2_proxy_ihash_t *ih, int id); +void h2_proxy_ihash_remove_val(h2_proxy_ihash_t *ih, void *val); +void h2_proxy_ihash_clear(h2_proxy_ihash_t *ih); -size_t h2_ihash_shift(h2_ihash_t *ih, void **buffer, size_t max); -size_t h2_ihash_ishift(h2_ihash_t *ih, int *buffer, size_t max); +size_t h2_proxy_ihash_shift(h2_proxy_ihash_t *ih, void **buffer, size_t max); +size_t h2_proxy_ihash_ishift(h2_proxy_ihash_t *ih, int *buffer, size_t max); /******************************************************************************* * iqueue - sorted list of int with user defined ordering ******************************************************************************/ -typedef struct h2_iqueue { +typedef struct h2_proxy_iqueue { int *elts; int head; int nelts; int nalloc; apr_pool_t *pool; -} h2_iqueue; +} h2_proxy_iqueue; /** * Comparator for two int to determine their order. @@ -81,26 +81,26 @@ typedef struct h2_iqueue { * < 0: s1 should be sorted before s2 * > 0: s2 should be sorted before s1 */ -typedef int h2_iq_cmp(int i1, int i2, void *ctx); +typedef int h2_proxy_iq_cmp(int i1, int i2, void *ctx); /** * Allocate a new queue from the pool and initialize. * @param id the identifier of the queue * @param pool the memory pool */ -h2_iqueue *h2_iq_create(apr_pool_t *pool, int capacity); +h2_proxy_iqueue *h2_proxy_iq_create(apr_pool_t *pool, int capacity); /** * Return != 0 iff there are no tasks in the queue. * @param q the queue to check */ -int h2_iq_empty(h2_iqueue *q); +int h2_proxy_iq_empty(h2_proxy_iqueue *q); /** * Return the number of int in the queue. * @param q the queue to get size on */ -int h2_iq_count(h2_iqueue *q); +int h2_proxy_iq_count(h2_proxy_iqueue *q); /** * Add a stream id to the queue. @@ -110,7 +110,7 @@ int h2_iq_count(h2_iqueue *q); * @param cmp the comparator for sorting * @param ctx user data for comparator */ -void h2_iq_add(h2_iqueue *q, int sid, h2_iq_cmp *cmp, void *ctx); +void h2_proxy_iq_add(h2_proxy_iqueue *q, int sid, h2_proxy_iq_cmp *cmp, void *ctx); /** * Remove the stream id from the queue. Return != 0 iff task @@ -119,12 +119,12 @@ void h2_iq_add(h2_iqueue *q, int sid, h2 * @param sid the stream id to remove * @return != 0 iff task was found in queue */ -int h2_iq_remove(h2_iqueue *q, int sid); +int h2_proxy_iq_remove(h2_proxy_iqueue *q, int sid); /** * Remove all entries in the queue. */ -void h2_iq_clear(h2_iqueue *q); +void h2_proxy_iq_clear(h2_proxy_iqueue *q); /** * Sort the stream idqueue again. Call if the task ordering @@ -134,7 +134,7 @@ void h2_iq_clear(h2_iqueue *q); * @param cmp the comparator for sorting * @param ctx user data for the comparator */ -void h2_iq_sort(h2_iqueue *q, h2_iq_cmp *cmp, void *ctx); +void h2_proxy_iq_sort(h2_proxy_iqueue *q, h2_proxy_iq_cmp *cmp, void *ctx); /** * Get the first stream id from the queue or NULL if the queue is empty. @@ -143,39 +143,113 @@ void h2_iq_sort(h2_iqueue *q, h2_iq_cmp * @param q the queue to get the first task from * @return the first stream id of the queue, 0 if empty */ -int h2_iq_shift(h2_iqueue *q); +int h2_proxy_iq_shift(h2_proxy_iqueue *q); /******************************************************************************* * common helpers ******************************************************************************/ -/* h2_log2(n) iff n is a power of 2 */ -unsigned char h2_log2(apr_uint32_t n); +/* h2_proxy_log2(n) iff n is a power of 2 */ +unsigned char h2_proxy_log2(int n); /******************************************************************************* * HTTP/2 header helpers ******************************************************************************/ -void h2_util_camel_case_header(char *s, size_t len); +void h2_proxy_util_camel_case_header(char *s, size_t len); int h2_proxy_res_ignore_header(const char *name, size_t len); /******************************************************************************* * nghttp2 helpers ******************************************************************************/ -typedef struct h2_ngheader { +typedef struct h2_proxy_ngheader { nghttp2_nv *nv; apr_size_t nvlen; -} h2_ngheader; -h2_ngheader *h2_util_ngheader_make_req(apr_pool_t *p, - const struct h2_request *req); +} h2_proxy_ngheader; +h2_proxy_ngheader *h2_proxy_util_nghd_make_req(apr_pool_t *p, + const struct h2_proxy_request *req); /******************************************************************************* - * h2_request helpers - ******************************************************************************/ -struct h2_request *h2_req_create(int id, apr_pool_t *pool, int serialize); -apr_status_t h2_req_make(struct h2_request *req, apr_pool_t *pool, - const char *method, const char *scheme, - const char *authority, const char *path, - apr_table_t *headers); + * h2_proxy_request helpers + ******************************************************************************/ +typedef struct h2_proxy_request h2_proxy_request; + +struct h2_proxy_request { + const char *method; /* pseudo header values, see ch. 8.1.2.3 */ + const char *scheme; + const char *authority; + const char *path; + + apr_table_t *headers; + + apr_time_t request_time; + + unsigned int chunked : 1; /* iff requst body needs to be forwarded as chunked */ + unsigned int serialize : 1; /* iff this request is written in HTTP/1.1 serialization */ +}; + +h2_proxy_request *h2_proxy_req_create(int id, apr_pool_t *pool, int serialize); +apr_status_t h2_proxy_req_make(h2_proxy_request *req, apr_pool_t *pool, + const char *method, const char *scheme, + const char *authority, const char *path, + apr_table_t *headers); + +/******************************************************************************* + * reverse mapping for link headers + ******************************************************************************/ +const char *h2_proxy_link_reverse_map(request_rec *r, + proxy_dir_conf *conf, + const char *real_server_uri, + const char *proxy_server_uri, + const char *s); + +/******************************************************************************* + * FIFO queue + ******************************************************************************/ + +/** + * A thread-safe FIFO queue with some extra bells and whistles, if you + * do not need anything special, better use 'apr_queue'. + */ +typedef struct h2_proxy_fifo h2_proxy_fifo; + +/** + * Create a FIFO queue that can hold up to capacity elements. Elements can + * appear several times. + */ +apr_status_t h2_proxy_fifo_create(h2_proxy_fifo **pfifo, apr_pool_t *pool, int capacity); + +/** + * Create a FIFO set that can hold up to capacity elements. Elements only + * appear once. Pushing an element already present does not change the + * queue and is successful. + */ +apr_status_t h2_proxy_fifo_set_create(h2_proxy_fifo **pfifo, apr_pool_t *pool, int capacity); + +apr_status_t h2_proxy_fifo_term(h2_proxy_fifo *fifo); +apr_status_t h2_proxy_fifo_interrupt(h2_proxy_fifo *fifo); + +int h2_proxy_fifo_capacity(h2_proxy_fifo *fifo); +int h2_proxy_fifo_count(h2_proxy_fifo *fifo); +/** + * Push en element into the queue. Blocks if there is no capacity left. + * + * @param fifo the FIFO queue + * @param elem the element to push + * @return APR_SUCCESS on push, APR_EAGAIN on try_push on a full queue, + * APR_EEXIST when in set mode and elem already there. + */ +apr_status_t h2_proxy_fifo_push(h2_proxy_fifo *fifo, void *elem); +apr_status_t h2_proxy_fifo_try_push(h2_proxy_fifo *fifo, void *elem); + +apr_status_t h2_proxy_fifo_pull(h2_proxy_fifo *fifo, void **pelem); +apr_status_t h2_proxy_fifo_try_pull(h2_proxy_fifo *fifo, void **pelem); + +/** + * Remove the elem from the queue, will remove multiple appearances. + * @param elem the element to remove + * @return APR_SUCCESS iff > 0 elems were removed, APR_EAGAIN otherwise. + */ +apr_status_t h2_proxy_fifo_remove(h2_proxy_fifo *fifo, void *elem); #endif /* defined(__mod_h2__h2_proxy_util__) */ diff -up --new-file httpd-2.4.23/modules/http2/h2_push.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_push.c --- httpd-2.4.23/modules/http2/h2_push.c 2016-05-23 12:55:29.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_push.c 2017-02-14 16:53:50.000000000 +0100 @@ -34,7 +34,7 @@ #include "h2_util.h" #include "h2_push.h" #include "h2_request.h" -#include "h2_response.h" +#include "h2_headers.h" #include "h2_session.h" #include "h2_stream.h" @@ -58,6 +58,7 @@ static const char *policy_str(h2_push_po typedef struct { const h2_request *req; + int push_policy; apr_pool_t *pool; apr_array_header_t *pushes; const char *s; @@ -162,10 +163,10 @@ static char *mk_str(link_ctx *ctx, size_ if (ctx->i < end) { return apr_pstrndup(ctx->pool, ctx->s + ctx->i, end - ctx->i); } - return ""; + return (char*)""; } -static int read_qstring(link_ctx *ctx, char **ps) +static int read_qstring(link_ctx *ctx, const char **ps) { if (skip_ws(ctx) && read_chr(ctx, '\"')) { size_t end; @@ -178,7 +179,7 @@ static int read_qstring(link_ctx *ctx, c return 0; } -static int read_ptoken(link_ctx *ctx, char **ps) +static int read_ptoken(link_ctx *ctx, const char **ps) { if (skip_ws(ctx)) { size_t i; @@ -208,7 +209,7 @@ static int read_link(link_ctx *ctx) return 0; } -static int read_pname(link_ctx *ctx, char **pname) +static int read_pname(link_ctx *ctx, const char **pname) { if (skip_ws(ctx)) { size_t i; @@ -224,7 +225,7 @@ static int read_pname(link_ctx *ctx, cha return 0; } -static int read_pvalue(link_ctx *ctx, char **pvalue) +static int read_pvalue(link_ctx *ctx, const char **pvalue) { if (skip_ws(ctx) && read_chr(ctx, '=')) { if (read_qstring(ctx, pvalue) || read_ptoken(ctx, pvalue)) { @@ -237,7 +238,7 @@ static int read_pvalue(link_ctx *ctx, ch static int read_param(link_ctx *ctx) { if (skip_ws(ctx) && read_chr(ctx, ';')) { - char *name, *value = ""; + const char *name, *value = ""; if (read_pname(ctx, &name)) { read_pvalue(ctx, &value); /* value is optional */ apr_table_setn(ctx->params, name, value); @@ -336,7 +337,7 @@ static int add_push(link_ctx *ctx) */ path = apr_uri_unparse(ctx->pool, &uri, APR_URI_UNP_OMITSITEPART); push = apr_pcalloc(ctx->pool, sizeof(*push)); - switch (ctx->req->push_policy) { + switch (ctx->push_policy) { case H2_PUSH_HEAD: method = "HEAD"; break; @@ -346,13 +347,17 @@ static int add_push(link_ctx *ctx) } headers = apr_table_make(ctx->pool, 5); apr_table_do(set_push_header, headers, ctx->req->headers, NULL); - req = h2_req_createn(0, ctx->pool, method, ctx->req->scheme, - ctx->req->authority, path, headers, - ctx->req->serialize); + req = h2_req_create(0, ctx->pool, method, ctx->req->scheme, + ctx->req->authority, path, headers, + ctx->req->serialize); /* atm, we do not push on pushes */ - h2_request_end_headers(req, ctx->pool, 1, 0); + h2_request_end_headers(req, ctx->pool, 1); push->req = req; - + if (has_param(ctx, "critical")) { + h2_priority *prio = apr_pcalloc(ctx->pool, sizeof(*prio)); + prio->dependency = H2_DEPENDANT_BEFORE; + push->priority = prio; + } if (!ctx->pushes) { ctx->pushes = apr_array_make(ctx->pool, 5, sizeof(h2_push*)); } @@ -427,10 +432,10 @@ static int head_iter(void *ctx, const ch return 1; } -apr_array_header_t *h2_push_collect(apr_pool_t *p, const h2_request *req, - const h2_response *res) +apr_array_header_t *h2_push_collect(apr_pool_t *p, const h2_request *req, + int push_policy, const h2_headers *res) { - if (req && req->push_policy != H2_PUSH_NONE) { + if (req && push_policy != H2_PUSH_NONE) { /* Collect push candidates from the request/response pair. * * One source for pushes are "rel=preload" link headers @@ -444,11 +449,13 @@ apr_array_header_t *h2_push_collect(apr_ memset(&ctx, 0, sizeof(ctx)); ctx.req = req; + ctx.push_policy = push_policy; ctx.pool = p; apr_table_do(head_iter, &ctx, res->headers, NULL); if (ctx.pushes) { - apr_table_setn(res->headers, "push-policy", policy_str(req->push_policy)); + apr_table_setn(res->headers, "push-policy", + policy_str(push_policy)); } return ctx.pushes; } @@ -527,9 +534,9 @@ static unsigned int val_apr_hash(const c static void calc_apr_hash(h2_push_diary *diary, apr_uint64_t *phash, h2_push *push) { apr_uint64_t val; -#if APR_UINT64MAX > APR_UINT_MAX - val = (val_apr_hash(push->req->scheme) << 32); - val ^= (val_apr_hash(push->req->authority) << 16); +#if APR_UINT64_MAX > UINT_MAX + val = ((apr_uint64_t)(val_apr_hash(push->req->scheme)) << 32); + val ^= ((apr_uint64_t)(val_apr_hash(push->req->authority)) << 16); val ^= val_apr_hash(push->req->path); #else val = val_apr_hash(push->req->scheme); @@ -552,7 +559,7 @@ static apr_int32_t ceil_power_of_2(apr_i } static h2_push_diary *diary_create(apr_pool_t *p, h2_push_digest_type dtype, - apr_size_t N) + int N) { h2_push_diary *diary = NULL; @@ -561,7 +568,7 @@ static h2_push_diary *diary_create(apr_p diary->NMax = ceil_power_of_2(N); diary->N = diary->NMax; - /* the mask we use in value comparision depends on where we got + /* the mask we use in value comparison depends on where we got * the values from. If we calculate them ourselves, we can use * the full 64 bits. * If we set the diary via a compressed golomb set, we have less @@ -587,7 +594,7 @@ static h2_push_diary *diary_create(apr_p return diary; } -h2_push_diary *h2_push_diary_create(apr_pool_t *p, apr_size_t N) +h2_push_diary *h2_push_diary_create(apr_pool_t *p, int N) { return diary_create(p, H2_PUSH_DIGEST_SHA256, N); } @@ -681,7 +688,7 @@ apr_array_header_t *h2_push_diary_update apr_array_header_t *h2_push_collect_update(h2_stream *stream, const struct h2_request *req, - const struct h2_response *res) + const struct h2_headers *res) { h2_session *session = stream->session; const char *cache_digest = apr_table_get(req->headers, "Cache-Digest"); @@ -693,12 +700,11 @@ apr_array_header_t *h2_push_collect_upda cache_digest, stream->pool); if (status != APR_SUCCESS) { ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, session->c, - APLOGNO(03057) - "h2_session(%ld): push diary set from Cache-Digest: %s", - session->id, cache_digest); + H2_SSSN_LOG(APLOGNO(03057), session, + "push diary set from Cache-Digest: %s"), cache_digest); } } - pushes = h2_push_collect(stream->pool, req, res); + pushes = h2_push_collect(stream->pool, req, stream->push_policy, res); return h2_push_diary_update(stream->session, pushes); } @@ -711,9 +717,9 @@ static apr_int32_t h2_log2inv(unsigned c typedef struct { h2_push_diary *diary; unsigned char log2p; - apr_uint32_t mask_bits; - apr_uint32_t delta_bits; - apr_uint32_t fixed_bits; + int mask_bits; + int delta_bits; + int fixed_bits; apr_uint64_t fixed_mask; apr_pool_t *pool; unsigned char *data; @@ -812,10 +818,10 @@ static apr_status_t gset_encode_next(gse * @param plen on successful return, the length of the binary data */ apr_status_t h2_push_diary_digest_get(h2_push_diary *diary, apr_pool_t *pool, - apr_uint32_t maxP, const char *authority, + int maxP, const char *authority, const char **pdata, apr_size_t *plen) { - apr_size_t nelts, N, i; + int nelts, N, i; unsigned char log2n, log2pmax; gset_encoder encoder; apr_uint64_t *hashes; @@ -965,7 +971,7 @@ apr_status_t h2_push_diary_digest_set(h2 { gset_decoder decoder; unsigned char log2n, log2p; - apr_size_t N, i; + int N, i; apr_pool_t *pool = diary->entries->pool; h2_push_diary_entry e; apr_status_t status = APR_SUCCESS; diff -up --new-file httpd-2.4.23/modules/http2/h2_push.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_push.h --- httpd-2.4.23/modules/http2/h2_push.h 2016-05-30 21:58:14.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_push.h 2016-11-14 12:15:08.000000000 +0100 @@ -18,13 +18,14 @@ #include "h2.h" struct h2_request; -struct h2_response; +struct h2_headers; struct h2_ngheader; struct h2_session; struct h2_stream; typedef struct h2_push { const struct h2_request *req; + h2_priority *priority; } h2_push; typedef enum { @@ -38,8 +39,8 @@ typedef void h2_push_digest_calc(h2_push struct h2_push_diary { apr_array_header_t *entries; - apr_size_t NMax; /* Maximum for N, should size change be necessary */ - apr_size_t N; /* Current maximum number of entries, power of 2 */ + int NMax; /* Maximum for N, should size change be necessary */ + int N; /* Current maximum number of entries, power of 2 */ apr_uint64_t mask; /* mask for relevant bits */ unsigned int mask_bits; /* number of relevant bits */ const char *authority; @@ -58,7 +59,8 @@ struct h2_push_diary { */ apr_array_header_t *h2_push_collect(apr_pool_t *p, const struct h2_request *req, - const struct h2_response *res); + int push_policy, + const struct h2_headers *res); /** * Create a new push diary for the given maximum number of entries. @@ -67,7 +69,7 @@ apr_array_header_t *h2_push_collect(apr_ * @param N the max number of entries, rounded up to 2^x * @return the created diary, might be NULL of max_entries is 0 */ -h2_push_diary *h2_push_diary_create(apr_pool_t *p, apr_size_t N); +h2_push_diary *h2_push_diary_create(apr_pool_t *p, int N); /** * Filters the given pushes against the diary and returns only those pushes @@ -81,7 +83,7 @@ apr_array_header_t *h2_push_diary_update */ apr_array_header_t *h2_push_collect_update(struct h2_stream *stream, const struct h2_request *req, - const struct h2_response *res); + const struct h2_headers *res); /** * Get a cache digest as described in * https://datatracker.ietf.org/doc/draft-kazuho-h2-cache-digest/ @@ -94,7 +96,7 @@ apr_array_header_t *h2_push_collect_upda * @param plen on successful return, the length of the binary data */ apr_status_t h2_push_diary_digest_get(h2_push_diary *diary, apr_pool_t *p, - apr_uint32_t maxP, const char *authority, + int maxP, const char *authority, const char **pdata, apr_size_t *plen); /** diff -up --new-file httpd-2.4.23/modules/http2/h2_request.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_request.c --- httpd-2.4.23/modules/http2/h2_request.c 2016-05-04 15:58:02.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_request.c 2017-04-18 15:12:38.000000000 +0200 @@ -30,27 +30,43 @@ #include <scoreboard.h> #include "h2_private.h" +#include "h2_config.h" #include "h2_push.h" #include "h2_request.h" #include "h2_util.h" -static apr_status_t inspect_clen(h2_request *req, const char *s) +typedef struct { + apr_table_t *headers; + apr_pool_t *pool; + apr_status_t status; +} h1_ctx; + +static int set_h1_header(void *ctx, const char *key, const char *value) { - char *end; - req->content_length = apr_strtoi64(s, &end, 10); - return (s == end)? APR_EINVAL : APR_SUCCESS; + h1_ctx *x = ctx; + x->status = h2_req_add_header(x->headers, x->pool, key, strlen(key), + value, strlen(value)); + return (x->status == APR_SUCCESS)? 1 : 0; } -apr_status_t h2_request_rwrite(h2_request *req, apr_pool_t *pool, - request_rec *r) +apr_status_t h2_request_rcreate(h2_request **preq, apr_pool_t *pool, + request_rec *r) { - apr_status_t status; - const char *scheme, *authority; + h2_request *req; + const char *scheme, *authority, *path; + h1_ctx x; + *preq = NULL; scheme = apr_pstrdup(pool, r->parsed_uri.scheme? r->parsed_uri.scheme : ap_http_scheme(r)); authority = apr_pstrdup(pool, r->hostname); + path = apr_uri_unparse(pool, &r->parsed_uri, APR_URI_UNP_OMITSITEPART); + + if (!r->method || !scheme || !r->hostname || !path) { + return APR_EINVAL; + } + if (!ap_strchr_c(authority, ':') && r->server && r->server->port) { apr_port_t defport = apr_uri_port_of_scheme(scheme); if (defport != r->server->port) { @@ -60,11 +76,24 @@ apr_status_t h2_request_rwrite(h2_reques } } - status = h2_req_make(req, pool, apr_pstrdup(pool, r->method), scheme, - authority, apr_uri_unparse(pool, &r->parsed_uri, - APR_URI_UNP_OMITSITEPART), - r->headers_in); - return status; + req = apr_pcalloc(pool, sizeof(*req)); + req->method = apr_pstrdup(pool, r->method); + req->scheme = scheme; + req->authority = authority; + req->path = path; + req->headers = apr_table_make(pool, 10); + if (r->server) { + req->serialize = h2_config_geti(h2_config_sget(r->server), + H2_CONF_SER_HEADERS); + } + + x.pool = pool; + x.headers = req->headers; + x.status = APR_SUCCESS; + apr_table_do(set_h1_header, &x, r->headers_in, NULL); + + *preq = req; + return x.status; } apr_status_t h2_request_add_header(h2_request *req, apr_pool_t *pool, @@ -82,8 +111,7 @@ apr_status_t h2_request_add_header(h2_re if (!apr_is_empty_table(req->headers)) { ap_log_perror(APLOG_MARK, APLOG_ERR, 0, pool, APLOGNO(02917) - "h2_request(%d): pseudo header after request start", - req->id); + "h2_request: pseudo header after request start"); return APR_EGENERAL; } @@ -109,28 +137,22 @@ apr_status_t h2_request_add_header(h2_re strncpy(buffer, name, (nlen > 31)? 31 : nlen); ap_log_perror(APLOG_MARK, APLOG_WARNING, 0, pool, APLOGNO(02954) - "h2_request(%d): ignoring unknown pseudo header %s", - req->id, buffer); + "h2_request: ignoring unknown pseudo header %s", + buffer); } } else { /* non-pseudo header, append to work bucket of stream */ - status = h2_headers_add_h1(req->headers, pool, name, nlen, value, vlen); + status = h2_req_add_header(req->headers, pool, name, nlen, value, vlen); } return status; } -apr_status_t h2_request_end_headers(h2_request *req, apr_pool_t *pool, - int eos, int push) +apr_status_t h2_request_end_headers(h2_request *req, apr_pool_t *pool, int eos) { const char *s; - if (req->eoh) { - /* already done */ - return APR_SUCCESS; - } - /* rfc7540, ch. 8.1.2.3: * - if we have :authority, it overrides any Host header * - :authority MUST be ommited when converting h1->h2, so we @@ -147,18 +169,11 @@ apr_status_t h2_request_end_headers(h2_r } s = apr_table_get(req->headers, "Content-Length"); - if (s) { - if (inspect_clen(req, s) != APR_SUCCESS) { - ap_log_perror(APLOG_MARK, APLOG_WARNING, APR_EINVAL, pool, - APLOGNO(02959) - "h2_request(%d): content-length value not parsed: %s", - req->id, s); - return APR_EINVAL; - } - } - else { - /* no content-length given */ - req->content_length = -1; + if (!s) { + /* HTTP/2 does not need a Content-Length for framing, but our + * internal request processing is used to HTTP/1.1, so we + * need to either add a Content-Length or a Transfer-Encoding + * if any content can be expected. */ if (!eos) { /* We have not seen a content-length and have no eos, * simulate a chunked encoding for our HTTP/1.1 infrastructure, @@ -168,68 +183,16 @@ apr_status_t h2_request_end_headers(h2_r apr_table_mergen(req->headers, "Transfer-Encoding", "chunked"); } else if (apr_table_get(req->headers, "Content-Type")) { - /* If we have a content-type, but already see eos, no more + /* If we have a content-type, but already seen eos, no more * data will come. Signal a zero content length explicitly. */ apr_table_setn(req->headers, "Content-Length", "0"); } } - req->eoh = 1; - h2_push_policy_determine(req, pool, push); - - /* In the presence of trailers, force behaviour of chunked encoding */ - s = apr_table_get(req->headers, "Trailer"); - if (s && s[0]) { - req->trailers = apr_table_make(pool, 5); - if (!req->chunked) { - req->chunked = 1; - apr_table_mergen(req->headers, "Transfer-Encoding", "chunked"); - } - } - - return APR_SUCCESS; -} - -static apr_status_t add_h1_trailer(h2_request *req, apr_pool_t *pool, - const char *name, size_t nlen, - const char *value, size_t vlen) -{ - char *hname, *hvalue; - - if (h2_req_ignore_trailer(name, nlen)) { - return APR_SUCCESS; - } - - hname = apr_pstrndup(pool, name, nlen); - hvalue = apr_pstrndup(pool, value, vlen); - h2_util_camel_case_header(hname, nlen); - - apr_table_mergen(req->trailers, hname, hvalue); - return APR_SUCCESS; } - -apr_status_t h2_request_add_trailer(h2_request *req, apr_pool_t *pool, - const char *name, size_t nlen, - const char *value, size_t vlen) -{ - if (!req->trailers) { - ap_log_perror(APLOG_MARK, APLOG_DEBUG, APR_EINVAL, pool, APLOGNO(03059) - "h2_request(%d): unanounced trailers", - req->id); - return APR_EINVAL; - } - if (nlen == 0 || name[0] == ':') { - ap_log_perror(APLOG_MARK, APLOG_DEBUG, APR_EINVAL, pool, APLOGNO(03060) - "h2_request(%d): pseudo header in trailer", - req->id); - return APR_EINVAL; - } - return add_h1_trailer(req, pool, name, nlen, value, vlen); -} - h2_request *h2_request_clone(apr_pool_t *p, const h2_request *src) { h2_request *dst = apr_pmemdup(p, src, sizeof(*dst)); @@ -238,25 +201,24 @@ h2_request *h2_request_clone(apr_pool_t dst->authority = apr_pstrdup(p, src->authority); dst->path = apr_pstrdup(p, src->path); dst->headers = apr_table_clone(p, src->headers); - if (src->trailers) { - dst->trailers = apr_table_clone(p, src->trailers); - } return dst; } -request_rec *h2_request_create_rec(const h2_request *req, conn_rec *conn) +request_rec *h2_request_create_rec(const h2_request *req, conn_rec *c) { - request_rec *r; - apr_pool_t *p; int access_status = HTTP_OK; - - apr_pool_create(&p, conn->pool); + const char *rpath; + apr_pool_t *p; + request_rec *r; + const char *s; + + apr_pool_create(&p, c->pool); apr_pool_tag(p, "request"); r = apr_pcalloc(p, sizeof(request_rec)); - AP_READ_REQUEST_ENTRY((intptr_t)r, (uintptr_t)conn); + AP_READ_REQUEST_ENTRY((intptr_t)r, (uintptr_t)c); r->pool = p; - r->connection = conn; - r->server = conn->base_server; + r->connection = c; + r->server = c->base_server; r->user = NULL; r->ap_auth_type = NULL; @@ -274,9 +236,9 @@ request_rec *h2_request_create_rec(const r->request_config = ap_create_request_config(r->pool); /* Must be set before we run create request hook */ - r->proto_output_filters = conn->output_filters; + r->proto_output_filters = c->output_filters; r->output_filters = r->proto_output_filters; - r->proto_input_filters = conn->input_filters; + r->proto_input_filters = c->input_filters; r->input_filters = r->proto_input_filters; ap_run_create_request(r); r->per_dir_config = r->server->lookup_defaults; @@ -295,10 +257,10 @@ request_rec *h2_request_create_rec(const */ r->used_path_info = AP_REQ_DEFAULT_PATH_INFO; - r->useragent_addr = conn->client_addr; - r->useragent_ip = conn->client_ip; + r->useragent_addr = c->client_addr; + r->useragent_ip = c->client_ip; - ap_run_pre_read_request(r, conn); + ap_run_pre_read_request(r, c); /* Time to populate r with the data we have. */ r->request_time = req->request_time; @@ -309,12 +271,13 @@ request_rec *h2_request_create_rec(const r->header_only = 1; } - ap_parse_uri(r, req->path); - r->protocol = "HTTP/2.0"; + rpath = (req->path ? req->path : ""); + ap_parse_uri(r, rpath); + r->protocol = (char*)"HTTP/2.0"; r->proto_num = HTTP_VERSION(2, 0); r->the_request = apr_psprintf(r->pool, "%s %s %s", - r->method, req->path, r->protocol); + r->method, rpath, r->protocol); /* update what we think the virtual host is based on the headers we've * now read. may update status. @@ -327,6 +290,17 @@ request_rec *h2_request_create_rec(const /* we may have switched to another server */ r->per_dir_config = r->server->lookup_defaults; + s = apr_table_get(r->headers_in, "Expect"); + if (s && s[0]) { + if (ap_cstr_casecmp(s, "100-continue") == 0) { + r->expecting_100 = 1; + } + else { + r->status = HTTP_EXPECTATION_FAILED; + ap_send_error_response(r, 0); + } + } + /* * Add the HTTP_IN filter here to ensure that ap_discard_request_body * called by ap_die and by ap_send_error_response works correctly on @@ -341,16 +315,16 @@ request_rec *h2_request_create_rec(const /* Request check post hooks failed. An example of this would be a * request for a vhost where h2 is disabled --> 421. */ - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, conn, APLOGNO() - "h2_request(%d): access_status=%d, request_create failed", - req->id, access_status); + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, c, APLOGNO(03367) + "h2_request: access_status=%d, request_create failed", + access_status); ap_die(access_status, r); - ap_update_child_status(conn->sbh, SERVER_BUSY_LOG, r); + ap_update_child_status(c->sbh, SERVER_BUSY_LOG, r); ap_run_log_transaction(r); r = NULL; goto traceout; } - + AP_READ_REQUEST_SUCCESS((uintptr_t)r, (char *)r->method, (char *)r->uri, (char *)r->server->defn_name, r->status); diff -up --new-file httpd-2.4.23/modules/http2/h2_request.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_request.h --- httpd-2.4.23/modules/http2/h2_request.h 2016-05-04 15:58:02.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_request.h 2016-10-03 14:57:47.000000000 +0200 @@ -18,8 +18,8 @@ #include "h2.h" -apr_status_t h2_request_rwrite(h2_request *req, apr_pool_t *pool, - request_rec *r); +apr_status_t h2_request_rcreate(h2_request **preq, apr_pool_t *pool, + request_rec *r); apr_status_t h2_request_add_header(h2_request *req, apr_pool_t *pool, const char *name, size_t nlen, @@ -29,8 +29,7 @@ apr_status_t h2_request_add_trailer(h2_r const char *name, size_t nlen, const char *value, size_t vlen); -apr_status_t h2_request_end_headers(h2_request *req, apr_pool_t *pool, - int eos, int push); +apr_status_t h2_request_end_headers(h2_request *req, apr_pool_t *pool, int eos); h2_request *h2_request_clone(apr_pool_t *p, const h2_request *src); diff -up --new-file httpd-2.4.23/modules/http2/h2_response.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_response.c --- httpd-2.4.23/modules/http2/h2_response.c 2016-05-18 17:10:20.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_response.c 1970-01-01 01:00:00.000000000 +0100 @@ -1,205 +0,0 @@ -/* Copyright 2015 greenbytes GmbH (https://www.greenbytes.de) - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include <assert.h> -#include <stdio.h> - -#include <apr_strings.h> - -#include <httpd.h> -#include <http_core.h> -#include <http_log.h> -#include <util_time.h> - -#include <nghttp2/nghttp2.h> - -#include "h2_private.h" -#include "h2_filter.h" -#include "h2_h2.h" -#include "h2_util.h" -#include "h2_request.h" -#include "h2_response.h" - - -static apr_table_t *parse_headers(apr_array_header_t *hlines, apr_pool_t *pool) -{ - if (hlines) { - apr_table_t *headers = apr_table_make(pool, hlines->nelts); - int i; - - for (i = 0; i < hlines->nelts; ++i) { - char *hline = ((char **)hlines->elts)[i]; - char *sep = ap_strchr(hline, ':'); - if (!sep) { - ap_log_perror(APLOG_MARK, APLOG_WARNING, APR_EINVAL, pool, - APLOGNO(02955) "h2_response: invalid header[%d] '%s'", - i, (char*)hline); - /* not valid format, abort */ - return NULL; - } - (*sep++) = '\0'; - while (*sep == ' ' || *sep == '\t') { - ++sep; - } - - if (!h2_util_ignore_header(hline)) { - apr_table_merge(headers, hline, sep); - } - } - return headers; - } - else { - return apr_table_make(pool, 0); - } -} - -static const char *get_sos_filter(apr_table_t *notes) -{ - return notes? apr_table_get(notes, H2_RESP_SOS_NOTE) : NULL; -} - -static void check_clen(h2_response *response, request_rec *r, apr_pool_t *pool) -{ - - if (r && r->header_only) { - response->content_length = 0; - } - else if (response->headers) { - const char *s = apr_table_get(response->headers, "Content-Length"); - if (s) { - char *end; - response->content_length = apr_strtoi64(s, &end, 10); - if (s == end) { - ap_log_perror(APLOG_MARK, APLOG_WARNING, APR_EINVAL, - pool, APLOGNO(02956) - "h2_response: content-length" - " value not parsed: %s", s); - response->content_length = -1; - } - } - } -} - -static h2_response *h2_response_create_int(int stream_id, - int rst_error, - int http_status, - apr_table_t *headers, - apr_table_t *notes, - apr_pool_t *pool) -{ - h2_response *response; - - if (!headers) { - return NULL; - } - - response = apr_pcalloc(pool, sizeof(h2_response)); - if (response == NULL) { - return NULL; - } - - response->stream_id = stream_id; - response->rst_error = rst_error; - response->http_status = http_status? http_status : 500; - response->content_length = -1; - response->headers = headers; - response->sos_filter = get_sos_filter(notes); - - check_clen(response, NULL, pool); - return response; -} - - -h2_response *h2_response_create(int stream_id, - int rst_error, - int http_status, - apr_array_header_t *hlines, - apr_table_t *notes, - apr_pool_t *pool) -{ - return h2_response_create_int(stream_id, rst_error, http_status, - parse_headers(hlines, pool), notes, pool); -} - -h2_response *h2_response_rcreate(int stream_id, request_rec *r, - apr_table_t *header, apr_pool_t *pool) -{ - h2_response *response = apr_pcalloc(pool, sizeof(h2_response)); - if (response == NULL) { - return NULL; - } - - response->stream_id = stream_id; - response->http_status = r->status; - response->content_length = -1; - response->headers = header; - response->sos_filter = get_sos_filter(r->notes); - - check_clen(response, r, pool); - - if (response->http_status == HTTP_FORBIDDEN) { - const char *cause = apr_table_get(r->notes, "ssl-renegotiate-forbidden"); - if (cause) { - /* This request triggered a TLS renegotiation that is now allowed - * in HTTP/2. Tell the client that it should use HTTP/1.1 for this. - */ - ap_log_rerror(APLOG_MARK, APLOG_DEBUG, response->http_status, r, - APLOGNO(03061) - "h2_response(%ld-%d): renegotiate forbidden, cause: %s", - (long)r->connection->id, stream_id, cause); - response->rst_error = H2_ERR_HTTP_1_1_REQUIRED; - } - } - - return response; -} - -h2_response *h2_response_die(int stream_id, apr_status_t type, - const struct h2_request *req, apr_pool_t *pool) -{ - apr_table_t *headers = apr_table_make(pool, 5); - char *date = NULL; - int status = (type >= 200 && type < 600)? type : 500; - - date = apr_palloc(pool, APR_RFC822_DATE_LEN); - ap_recent_rfc822_date(date, req->request_time); - apr_table_setn(headers, "Date", date); - apr_table_setn(headers, "Server", ap_get_server_banner()); - - return h2_response_create_int(stream_id, 0, status, headers, NULL, pool); -} - -h2_response *h2_response_clone(apr_pool_t *pool, h2_response *from) -{ - h2_response *to = apr_pcalloc(pool, sizeof(h2_response)); - - to->stream_id = from->stream_id; - to->http_status = from->http_status; - to->content_length = from->content_length; - to->sos_filter = from->sos_filter; - if (from->headers) { - to->headers = apr_table_clone(pool, from->headers); - } - if (from->trailers) { - to->trailers = apr_table_clone(pool, from->trailers); - } - return to; -} - -void h2_response_set_trailers(h2_response *response, apr_table_t *trailers) -{ - response->trailers = trailers; -} - diff -up --new-file httpd-2.4.23/modules/http2/h2_response.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_response.h --- httpd-2.4.23/modules/http2/h2_response.h 2016-03-02 12:21:28.000000000 +0100 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_response.h 1970-01-01 01:00:00.000000000 +0100 @@ -1,73 +0,0 @@ -/* Copyright 2015 greenbytes GmbH (https://www.greenbytes.de) - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#ifndef __mod_h2__h2_response__ -#define __mod_h2__h2_response__ - -#include "h2.h" - -/** - * Create the response from the status and parsed header lines. - * @param stream_id id of the stream to create the response for - * @param rst_error error for reset or 0 - * @param http_status http status code of response - * @param hlines the text lines of the response header - * @param pool the memory pool to use - */ -h2_response *h2_response_create(int stream_id, - int rst_error, - int http_status, - apr_array_header_t *hlines, - apr_table_t *notes, - apr_pool_t *pool); - -/** - * Create the response from the given request_rec. - * @param stream_id id of the stream to create the response for - * @param r the request record which was processed - * @param header the headers of the response - * @param pool the memory pool to use - */ -h2_response *h2_response_rcreate(int stream_id, request_rec *r, - apr_table_t *header, apr_pool_t *pool); - -/** - * Create the response for the given error. - * @param stream_id id of the stream to create the response for - * @param type the error code - * @param req the original h2_request - * @param pool the memory pool to use - */ -h2_response *h2_response_die(int stream_id, apr_status_t type, - const struct h2_request *req, apr_pool_t *pool); - -/** - * Deep copies the response into a new pool. - * @param pool the pool to use for the clone - * @param from the response to clone - * @return the cloned response - */ -h2_response *h2_response_clone(apr_pool_t *pool, h2_response *from); - -/** - * Set the trailers in the reponse. Will replace any existing trailers. Will - * *not* clone the table. - * - * @param response the repsone to set the trailers for - * @param trailers the trailers to set - */ -void h2_response_set_trailers(h2_response *response, apr_table_t *trailers); - -#endif /* defined(__mod_h2__h2_response__) */ diff -up --new-file httpd-2.4.23/modules/http2/h2_session.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_session.c --- httpd-2.4.23/modules/http2/h2_session.c 2017-12-27 23:01:33.408186020 +0100 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_session.c 2017-07-04 14:34:15.000000000 +0200 @@ -27,9 +27,11 @@ #include <http_log.h> #include <scoreboard.h> +#include <mpm_common.h> + #include "h2_private.h" #include "h2.h" -#include "h2_bucket_eoc.h" +#include "h2_bucket_beam.h" #include "h2_bucket_eos.h" #include "h2_config.h" #include "h2_ctx.h" @@ -38,9 +40,8 @@ #include "h2_mplx.h" #include "h2_push.h" #include "h2_request.h" -#include "h2_response.h" +#include "h2_headers.h" #include "h2_stream.h" -#include "h2_from_h1.h" #include "h2_task.h" #include "h2_session.h" #include "h2_util.h" @@ -48,6 +49,15 @@ #include "h2_workers.h" +static apr_status_t dispatch_master(h2_session *session); +static apr_status_t h2_session_read(h2_session *session, int block); +static void transit(h2_session *session, const char *action, + h2_session_state nstate); + +static void on_stream_state_enter(void *ctx, h2_stream *stream); +static void on_stream_state_event(void *ctx, h2_stream *stream, h2_stream_event_t ev); +static void on_stream_event(void *ctx, h2_stream *stream, h2_stream_event_t ev); + static int h2_session_status_from_apr_status(apr_status_t rv) { if (rv == APR_SUCCESS) { @@ -62,80 +72,44 @@ static int h2_session_status_from_apr_st return NGHTTP2_ERR_PROTO; } -static void update_window(void *ctx, int stream_id, apr_off_t bytes_read) +h2_stream *h2_session_stream_get(h2_session *session, int stream_id) { - h2_session *session = (h2_session*)ctx; - nghttp2_session_consume(session->ngh2, stream_id, bytes_read); - ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, session->c, - "h2_session(%ld-%d): consumed %ld bytes", - session->id, stream_id, (long)bytes_read); + return nghttp2_session_get_stream_user_data(session->ngh2, stream_id); } -static apr_status_t h2_session_receive(void *ctx, - const char *data, apr_size_t len, - apr_size_t *readlen); - -static int is_accepting_streams(h2_session *session); static void dispatch_event(h2_session *session, h2_session_event_t ev, int err, const char *msg); -apr_status_t h2_session_stream_done(h2_session *session, h2_stream *stream) +void h2_session_event(h2_session *session, h2_session_event_t ev, + int err, const char *msg) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, session->c, - "h2_stream(%ld-%d): EOS bucket cleanup -> done", - session->id, stream->id); - h2_ihash_remove(session->streams, stream->id); - h2_mplx_stream_done(session->mplx, stream); - - dispatch_event(session, H2_SESSION_EV_STREAM_DONE, 0, NULL); - return APR_SUCCESS; + dispatch_event(session, ev, err, msg); } -typedef struct stream_sel_ctx { - h2_session *session; - h2_stream *candidate; -} stream_sel_ctx; - -static int find_cleanup_stream(void *udata, void *sdata) +static int rst_unprocessed_stream(h2_stream *stream, void *ctx) { - stream_sel_ctx *ctx = udata; - h2_stream *stream = sdata; - if (H2_STREAM_CLIENT_INITIATED(stream->id)) { - if (!ctx->session->local.accepting - && stream->id > ctx->session->local.accepted_max) { - ctx->candidate = stream; - return 0; - } - } - else { - if (!ctx->session->remote.accepting - && stream->id > ctx->session->remote.accepted_max) { - ctx->candidate = stream; - return 0; - } + int unprocessed = (!h2_stream_was_closed(stream) + && (H2_STREAM_CLIENT_INITIATED(stream->id)? + (!stream->session->local.accepting + && stream->id > stream->session->local.accepted_max) + : + (!stream->session->remote.accepting + && stream->id > stream->session->remote.accepted_max)) + ); + if (unprocessed) { + h2_stream_rst(stream, H2_ERR_NO_ERROR); + return 0; } return 1; } -static void cleanup_streams(h2_session *session) +static void cleanup_unprocessed_streams(h2_session *session) { - stream_sel_ctx ctx; - ctx.session = session; - ctx.candidate = NULL; - while (1) { - h2_ihash_iter(session->streams, find_cleanup_stream, &ctx); - if (ctx.candidate) { - h2_session_stream_done(session, ctx.candidate); - ctx.candidate = NULL; - } - else { - break; - } - } + h2_mplx_stream_do(session->mplx, rst_unprocessed_stream, session); } -h2_stream *h2_session_open_stream(h2_session *session, int stream_id, - int initiated_on, const h2_request *req) +static h2_stream *h2_session_open_stream(h2_session *session, int stream_id, + int initiated_on) { h2_stream * stream; apr_pool_t *stream_pool; @@ -143,26 +117,11 @@ h2_stream *h2_session_open_stream(h2_ses apr_pool_create(&stream_pool, session->pool); apr_pool_tag(stream_pool, "h2_stream"); - stream = h2_stream_open(stream_id, stream_pool, session, - initiated_on, req); - nghttp2_session_set_stream_user_data(session->ngh2, stream_id, stream); - h2_ihash_add(session->streams, stream); - - if (H2_STREAM_CLIENT_INITIATED(stream_id)) { - if (stream_id > session->remote.emitted_max) { - ++session->remote.emitted_count; - session->remote.emitted_max = stream->id; - session->local.accepted_max = stream->id; - } - } - else { - if (stream_id > session->local.emitted_max) { - ++session->local.emitted_count; - session->remote.emitted_max = stream->id; - } + stream = h2_stream_create(stream_id, stream_pool, session, + session->monitor, initiated_on); + if (stream) { + nghttp2_session_set_stream_user_data(session->ngh2, stream_id, stream); } - dispatch_event(session, H2_SESSION_EV_STREAM_OPEN, 0, NULL); - return stream; } @@ -219,14 +178,6 @@ static int stream_pri_cmp(int sid1, int return spri_cmp(sid1, s1, sid2, s2, session); } -static apr_status_t stream_schedule(h2_session *session, - h2_stream *stream, int eos) -{ - (void)session; - return h2_stream_schedule(stream, eos, h2_session_push_enabled(session), - stream_pri_cmp, session); -} - /* * Callback when nghttp2 wants to send bytes back to the client. */ @@ -236,9 +187,9 @@ static ssize_t send_cb(nghttp2_session * { h2_session *session = (h2_session *)userp; apr_status_t status; - (void)ngh2; (void)flags; + status = h2_conn_io_write(&session->io, (const char *)data, length); if (status == APR_SUCCESS) { return length; @@ -262,96 +213,40 @@ static int on_invalid_frame_recv_cb(nght char buffer[256]; h2_util_frame_print(frame, buffer, sizeof(buffer)/sizeof(buffer[0])); - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03063) - "h2_session(%ld): recv invalid FRAME[%s], frames=%ld/%ld (r/s)", - session->id, buffer, (long)session->frames_received, + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, + H2_SSSN_LOG(APLOGNO(03063), session, + "recv invalid FRAME[%s], frames=%ld/%ld (r/s)"), + buffer, (long)session->frames_received, (long)session->frames_sent); } return 0; } -static h2_stream *get_stream(h2_session *session, int stream_id) -{ - return nghttp2_session_get_stream_user_data(session->ngh2, stream_id); -} - static int on_data_chunk_recv_cb(nghttp2_session *ngh2, uint8_t flags, int32_t stream_id, const uint8_t *data, size_t len, void *userp) { h2_session *session = (h2_session *)userp; - apr_status_t status = APR_SUCCESS; + apr_status_t status = APR_EINVAL; h2_stream * stream; - int rv; + int rv = 0; - (void)flags; - if (!is_accepting_streams(session)) { - /* ignore */ - return 0; + stream = h2_session_stream_get(session, stream_id); + if (stream) { + status = h2_stream_recv_DATA(stream, flags, data, len); } - - stream = get_stream(session, stream_id); - if (!stream) { + else { ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03064) "h2_stream(%ld-%d): on_data_chunk for unknown stream", session->id, (int)stream_id); - rv = nghttp2_submit_rst_stream(ngh2, NGHTTP2_FLAG_NONE, stream_id, - NGHTTP2_INTERNAL_ERROR); - if (nghttp2_is_fatal(rv)) { - return NGHTTP2_ERR_CALLBACK_FAILURE; - } - return 0; - } - - /* FIXME: enabling setting EOS this way seems to break input handling - * in mod_proxy_http2. why? */ - status = h2_stream_write_data(stream, (const char *)data, len, - 0 /*flags & NGHTTP2_FLAG_END_STREAM*/); - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, session->c, - "h2_stream(%ld-%d): data_chunk_recv, written %ld bytes", - session->id, stream_id, (long)len); - if (status != APR_SUCCESS) { - update_window(session, stream_id, len); - rv = nghttp2_submit_rst_stream(ngh2, NGHTTP2_FLAG_NONE, stream_id, - H2_STREAM_RST(stream, H2_ERR_INTERNAL_ERROR)); - if (nghttp2_is_fatal(rv)) { - return NGHTTP2_ERR_CALLBACK_FAILURE; - } + rv = NGHTTP2_ERR_CALLBACK_FAILURE; } - return 0; -} - -static apr_status_t stream_release(h2_session *session, - h2_stream *stream, - uint32_t error_code) -{ - conn_rec *c = session->c; - apr_bucket *b; - apr_status_t status; - if (!error_code) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, - "h2_stream(%ld-%d): handled, closing", - session->id, (int)stream->id); - if (H2_STREAM_CLIENT_INITIATED(stream->id)) { - if (stream->id > session->local.completed_max) { - session->local.completed_max = stream->id; - } - } - } - else { - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, c, APLOGNO(03065) - "h2_stream(%ld-%d): closing with err=%d %s", - session->id, (int)stream->id, (int)error_code, - h2_h2_err_description(error_code)); - h2_stream_rst(stream, error_code); + if (status != APR_SUCCESS) { + /* count this as consumed explicitly as no one will read it */ + nghttp2_session_consume(session->ngh2, stream_id, len); } - - b = h2_bucket_eos_create(c->bucket_alloc, stream); - APR_BRIGADE_INSERT_TAIL(session->bbtmp, b); - status = h2_conn_io_pass(&session->io, session->bbtmp); - apr_brigade_cleanup(session->bbtmp); - return status; + return rv; } static int on_stream_close_cb(nghttp2_session *ngh2, int32_t stream_id, @@ -361,9 +256,15 @@ static int on_stream_close_cb(nghttp2_se h2_stream *stream; (void)ngh2; - stream = get_stream(session, stream_id); + stream = h2_session_stream_get(session, stream_id); if (stream) { - stream_release(session, stream, error_code); + if (error_code) { + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, + H2_STRM_LOG(APLOGNO(03065), stream, + "closing with err=%d %s"), + (int)error_code, h2_h2_err_description(error_code)); + h2_stream_rst(stream, error_code); + } } return 0; } @@ -377,12 +278,12 @@ static int on_begin_headers_cb(nghttp2_s /* We may see HEADERs at the start of a stream or after all DATA * streams to carry trailers. */ (void)ngh2; - s = get_stream(session, frame->hd.stream_id); + s = h2_session_stream_get(session, frame->hd.stream_id); if (s) { /* nop */ } else { - s = h2_session_open_stream(userp, frame->hd.stream_id, 0, NULL); + s = h2_session_open_stream(userp, frame->hd.stream_id, 0); } return s? 0 : NGHTTP2_ERR_START_STREAM_NOT_ALLOWED; } @@ -398,30 +299,17 @@ static int on_header_cb(nghttp2_session apr_status_t status; (void)flags; - if (!is_accepting_streams(session)) { - /* just ignore */ - return 0; - } - - stream = get_stream(session, frame->hd.stream_id); + stream = h2_session_stream_get(session, frame->hd.stream_id); if (!stream) { - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, - APLOGNO(02920) - "h2_session: stream(%ld-%d): on_header unknown stream", + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(02920) + "h2_stream(%ld-%d): on_header unknown stream", session->id, (int)frame->hd.stream_id); return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE; } status = h2_stream_add_header(stream, (const char *)name, namelen, (const char *)value, valuelen); - if (status == APR_ECONNRESET) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, session->c, - "h2-stream(%ld-%d): on_header, reset stream", - session->id, stream->id); - nghttp2_submit_rst_stream(ngh2, NGHTTP2_FLAG_NONE, stream->id, - NGHTTP2_INTERNAL_ERROR); - } - else if (status != APR_SUCCESS && !stream->response) { + if (status != APR_SUCCESS && !h2_stream_is_ready(stream)) { return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE; } return 0; @@ -437,16 +325,17 @@ static int on_frame_recv_cb(nghttp2_sess void *userp) { h2_session *session = (h2_session *)userp; - apr_status_t status = APR_SUCCESS; h2_stream *stream; + apr_status_t rv = APR_SUCCESS; if (APLOGcdebug(session->c)) { char buffer[256]; h2_util_frame_print(frame, buffer, sizeof(buffer)/sizeof(buffer[0])); - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03066) - "h2_session(%ld): recv FRAME[%s], frames=%ld/%ld (r/s)", - session->id, buffer, (long)session->frames_received, + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, + H2_SSSN_LOG(APLOGNO(03066), session, + "recv FRAME[%s], frames=%ld/%ld (r/s)"), + buffer, (long)session->frames_received, (long)session->frames_sent); } @@ -456,49 +345,25 @@ static int on_frame_recv_cb(nghttp2_sess /* This can be HEADERS for a new stream, defining the request, * or HEADER may come after DATA at the end of a stream as in * trailers */ - stream = get_stream(session, frame->hd.stream_id); + stream = h2_session_stream_get(session, frame->hd.stream_id); if (stream) { - int eos = (frame->hd.flags & NGHTTP2_FLAG_END_STREAM); - - if (h2_stream_is_scheduled(stream)) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c, - "h2_stream(%ld-%d): TRAILER, eos=%d", - session->id, frame->hd.stream_id, eos); - if (eos) { - status = h2_stream_close_input(stream); - } - } - else { - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c, - "h2_stream(%ld-%d): HEADER, eos=%d", - session->id, frame->hd.stream_id, eos); - status = stream_schedule(session, stream, eos); - } - } - else { - status = APR_EINVAL; + rv = h2_stream_recv_frame(stream, NGHTTP2_HEADERS, frame->hd.flags); } break; case NGHTTP2_DATA: - stream = get_stream(session, frame->hd.stream_id); + stream = h2_session_stream_get(session, frame->hd.stream_id); if (stream) { - int eos = (frame->hd.flags & NGHTTP2_FLAG_END_STREAM); - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c, - "h2_stream(%ld-%d): DATA, len=%ld, eos=%d", - session->id, frame->hd.stream_id, - (long)frame->hd.length, eos); - if (eos) { - status = h2_stream_close_input(stream); - } - } - else { - status = APR_EINVAL; + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, + H2_STRM_LOG(APLOGNO(02923), stream, + "DATA, len=%ld, flags=%d"), + (long)frame->hd.length, frame->hd.flags); + rv = h2_stream_recv_frame(stream, NGHTTP2_DATA, frame->hd.flags); } break; case NGHTTP2_PRIORITY: session->reprioritize = 1; ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, session->c, - "h2_session: stream(%ld-%d): PRIORITY frame " + "h2_stream(%ld-%d): PRIORITY frame " " weight=%d, dependsOn=%d, exclusive=%d", session->id, (int)frame->hd.stream_id, frame->priority.pri_spec.weight, @@ -507,18 +372,17 @@ static int on_frame_recv_cb(nghttp2_sess break; case NGHTTP2_WINDOW_UPDATE: ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, session->c, - "h2_session: stream(%ld-%d): WINDOW_UPDATE " - "incr=%d", + "h2_stream(%ld-%d): WINDOW_UPDATE incr=%d", session->id, (int)frame->hd.stream_id, frame->window_update.window_size_increment); break; case NGHTTP2_RST_STREAM: ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03067) - "h2_session(%ld-%d): RST_STREAM by client, errror=%d", + "h2_stream(%ld-%d): RST_STREAM by client, errror=%d", session->id, (int)frame->hd.stream_id, (int)frame->rst_stream.error_code); - stream = get_stream(session, frame->hd.stream_id); - if (stream && stream->request && stream->request->initiated_on) { + stream = h2_session_stream_get(session, frame->hd.stream_id); + if (stream && stream->initiated_on) { ++session->pushes_reset; } else { @@ -526,9 +390,16 @@ static int on_frame_recv_cb(nghttp2_sess } break; case NGHTTP2_GOAWAY: - session->remote.accepted_max = frame->goaway.last_stream_id; - session->remote.error = frame->goaway.error_code; - dispatch_event(session, H2_SESSION_EV_REMOTE_GOAWAY, 0, NULL); + if (frame->goaway.error_code == 0 + && frame->goaway.last_stream_id == ((1u << 31) - 1)) { + /* shutdown notice. Should not come from a client... */ + session->remote.accepting = 0; + } + else { + session->remote.accepted_max = frame->goaway.last_stream_id; + dispatch_event(session, H2_SESSION_EV_REMOTE_GOAWAY, + frame->goaway.error_code, NULL); + } break; default: if (APLOGctrace2(session->c)) { @@ -537,27 +408,21 @@ static int on_frame_recv_cb(nghttp2_sess h2_util_frame_print(frame, buffer, sizeof(buffer)/sizeof(buffer[0])); ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, session->c, - "h2_session: on_frame_rcv %s", buffer); + H2_SSSN_MSG(session, "on_frame_rcv %s"), buffer); } break; } + return (APR_SUCCESS == rv)? 0 : NGHTTP2_ERR_PROTO; +} - if (status != APR_SUCCESS) { - int rv; - - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, session->c, - APLOGNO(02923) - "h2_session: stream(%ld-%d): error handling frame", - session->id, (int)frame->hd.stream_id); - rv = nghttp2_submit_rst_stream(ng2s, NGHTTP2_FLAG_NONE, - frame->hd.stream_id, - NGHTTP2_INTERNAL_ERROR); - if (nghttp2_is_fatal(rv)) { - return NGHTTP2_ERR_CALLBACK_FAILURE; - } +static int h2_session_continue_data(h2_session *session) { + if (h2_mplx_has_master_events(session->mplx)) { + return 0; } - - return 0; + if (h2_conn_io_needs_flush(&session->io)) { + return 0; + } + return 1; } static char immortal_zeros[H2_MAX_PADLEN]; @@ -580,24 +445,28 @@ static int on_send_data_cb(nghttp2_sessi (void)ngh2; (void)source; + if (!h2_session_continue_data(session)) { + return NGHTTP2_ERR_WOULDBLOCK; + } + if (frame->data.padlen > H2_MAX_PADLEN) { return NGHTTP2_ERR_PROTO; } padlen = (unsigned char)frame->data.padlen; - ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, session->c, - "h2_stream(%ld-%d): send_data_cb for %ld bytes", - session->id, (int)stream_id, (long)length); - - stream = get_stream(session, stream_id); + stream = h2_session_stream_get(session, stream_id); if (!stream) { ap_log_cerror(APLOG_MARK, APLOG_ERR, APR_NOTFOUND, session->c, APLOGNO(02924) - "h2_stream(%ld-%d): send_data, lookup stream", + "h2_stream(%ld-%d): send_data, stream not found", session->id, (int)stream_id); return NGHTTP2_ERR_CALLBACK_FAILURE; } + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, session->c, + H2_STRM_MSG(stream, "send_data_cb for %ld bytes"), + (long)length); + status = h2_conn_io_write(&session->io, (const char *)framehd, 9); if (padlen && status == APR_SUCCESS) { status = h2_conn_io_write(&session->io, (const char *)&padlen, 1); @@ -605,23 +474,22 @@ static int on_send_data_cb(nghttp2_sessi if (status != APR_SUCCESS) { ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, session->c, - "h2_stream(%ld-%d): writing frame header", - session->id, (int)stream_id); + H2_STRM_MSG(stream, "writing frame header")); return NGHTTP2_ERR_CALLBACK_FAILURE; } status = h2_stream_read_to(stream, session->bbtmp, &len, &eos); if (status != APR_SUCCESS) { ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, session->c, - "h2_stream(%ld-%d): send_data_cb, reading stream", - session->id, (int)stream_id); + H2_STRM_MSG(stream, "send_data_cb, reading stream")); + apr_brigade_cleanup(session->bbtmp); return NGHTTP2_ERR_CALLBACK_FAILURE; } else if (len != length) { ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, session->c, - "h2_stream(%ld-%d): send_data_cb, wanted %ld bytes, " - "got %ld from stream", - session->id, (int)stream_id, (long)length, (long)len); + H2_STRM_MSG(stream, "send_data_cb, wanted %ld bytes, " + "got %ld from stream"), (long)length, (long)len); + apr_brigade_cleanup(session->bbtmp); return NGHTTP2_ERR_CALLBACK_FAILURE; } @@ -632,17 +500,16 @@ static int on_send_data_cb(nghttp2_sessi } status = h2_conn_io_pass(&session->io, session->bbtmp); - apr_brigade_cleanup(session->bbtmp); + if (status == APR_SUCCESS) { - stream->data_frames_sent++; + stream->out_data_frames++; + stream->out_data_octets += length; return 0; } else { - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, session->c, - APLOGNO(02925) - "h2_stream(%ld-%d): failed send_data_cb", - session->id, (int)stream_id); + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, session->c, + H2_STRM_LOG(APLOGNO(02925), stream, "failed send_data_cb")); return NGHTTP2_ERR_CALLBACK_FAILURE; } } @@ -652,19 +519,62 @@ static int on_frame_send_cb(nghttp2_sess void *user_data) { h2_session *session = user_data; + h2_stream *stream; + int stream_id = frame->hd.stream_id; + + ++session->frames_sent; + switch (frame->hd.type) { + case NGHTTP2_PUSH_PROMISE: + /* PUSH_PROMISE we report on the promised stream */ + stream_id = frame->push_promise.promised_stream_id; + break; + default: + break; + } + if (APLOGcdebug(session->c)) { char buffer[256]; h2_util_frame_print(frame, buffer, sizeof(buffer)/sizeof(buffer[0])); - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03068) - "h2_session(%ld): sent FRAME[%s], frames=%ld/%ld (r/s)", - session->id, buffer, (long)session->frames_received, + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, + H2_SSSN_LOG(APLOGNO(03068), session, + "sent FRAME[%s], frames=%ld/%ld (r/s)"), + buffer, (long)session->frames_received, (long)session->frames_sent); } - ++session->frames_sent; + + stream = h2_session_stream_get(session, stream_id); + if (stream) { + h2_stream_send_frame(stream, frame->hd.type, frame->hd.flags); + } return 0; } +#ifdef H2_NG2_INVALID_HEADER_CB +static int on_invalid_header_cb(nghttp2_session *ngh2, + const nghttp2_frame *frame, + const uint8_t *name, size_t namelen, + const uint8_t *value, size_t valuelen, + uint8_t flags, void *user_data) +{ + h2_session *session = user_data; + h2_stream *stream; + + if (APLOGcdebug(session->c)) { + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03456) + "h2_stream(%ld-%d): invalid header '%s: %s'", + session->id, (int)frame->hd.stream_id, + apr_pstrndup(session->pool, (const char *)name, namelen), + apr_pstrndup(session->pool, (const char *)value, valuelen)); + } + stream = h2_session_stream_get(session, frame->hd.stream_id); + if (stream) { + h2_stream_rst(stream, NGHTTP2_PROTOCOL_ERROR); + } + return 0; +} +#endif + #define NGH2_SET_CALLBACK(callbacks, name, fn)\ nghttp2_session_callbacks_set_##name##_callback(callbacks, fn) @@ -687,38 +597,30 @@ static apr_status_t init_callbacks(conn_ NGH2_SET_CALLBACK(*pcb, on_header, on_header_cb); NGH2_SET_CALLBACK(*pcb, send_data, on_send_data_cb); NGH2_SET_CALLBACK(*pcb, on_frame_send, on_frame_send_cb); - +#ifdef H2_NG2_INVALID_HEADER_CB + NGH2_SET_CALLBACK(*pcb, on_invalid_header, on_invalid_header_cb); +#endif return APR_SUCCESS; } -static void h2_session_destroy(h2_session *session) +static apr_status_t h2_session_shutdown_notice(h2_session *session) { - AP_DEBUG_ASSERT(session); - - h2_ihash_clear(session->streams); - if (session->mplx) { - h2_mplx_set_consumed_cb(session->mplx, NULL, NULL); - h2_mplx_release_and_join(session->mplx, session->iowait); - session->mplx = NULL; - } - - ap_remove_input_filter_byhandle((session->r? session->r->input_filters : - session->c->input_filters), "H2_IN"); - if (session->ngh2) { - nghttp2_session_del(session->ngh2); - session->ngh2 = NULL; - } - if (session->c) { - h2_ctx_clear(session->c); - } - - if (APLOGctrace1(session->c)) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c, - "h2_session(%ld): destroy", session->id); + apr_status_t status; + + ap_assert(session); + if (!session->local.accepting) { + return APR_SUCCESS; } - if (session->pool) { - apr_pool_destroy(session->pool); + + nghttp2_submit_shutdown_notice(session->ngh2); + session->local.accepting = 0; + status = nghttp2_session_send(session->ngh2); + if (status == APR_SUCCESS) { + status = h2_conn_io_flush(&session->io); } + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, + H2_SSSN_LOG(APLOGNO(03457), session, "sent shutdown notice")); + return status; } static apr_status_t h2_session_shutdown(h2_session *session, int error, @@ -726,7 +628,10 @@ static apr_status_t h2_session_shutdown( { apr_status_t status = APR_SUCCESS; - AP_DEBUG_ASSERT(session); + ap_assert(session); + if (session->local.shutdown) { + return APR_SUCCESS; + } if (!msg && error) { msg = nghttp2_strerror(error); } @@ -747,40 +652,33 @@ static apr_status_t h2_session_shutdown( * we have, but no longer accept new ones. Report the max stream * we have received and discard all new ones. */ } - nghttp2_submit_goaway(session->ngh2, NGHTTP2_FLAG_NONE, - session->local.accepted_max, - error, (uint8_t*)msg, msg? strlen(msg):0); - status = nghttp2_session_send(session->ngh2); - if (status == APR_SUCCESS) { - status = h2_conn_io_flush(&session->io); - } - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03069) - "session(%ld): sent GOAWAY, err=%d, msg=%s", - session->id, error, msg? msg : ""); - dispatch_event(session, H2_SESSION_EV_LOCAL_GOAWAY, error, msg); - if (force_close) { - h2_mplx_abort(session->mplx); + session->local.accepting = 0; + session->local.shutdown = 1; + if (!session->c->aborted) { + nghttp2_submit_goaway(session->ngh2, NGHTTP2_FLAG_NONE, + session->local.accepted_max, + error, (uint8_t*)msg, msg? strlen(msg):0); + status = nghttp2_session_send(session->ngh2); + if (status == APR_SUCCESS) { + status = h2_conn_io_flush(&session->io); + } + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, + H2_SSSN_LOG(APLOGNO(03069), session, + "sent GOAWAY, err=%d, msg=%s"), error, msg? msg : ""); } - + dispatch_event(session, H2_SESSION_EV_LOCAL_GOAWAY, error, msg); return status; } -static apr_status_t session_pool_cleanup(void *data) +static apr_status_t session_cleanup(h2_session *session, const char *trigger) { - h2_session *session = data; - /* On a controlled connection shutdown, this gets never - * called as we deregister and destroy our pool manually. - * However when we have an async mpm, and handed it our idle - * connection, it will just cleanup once the connection is closed - * from the other side (and sometimes even from out side) and - * here we arrive then. - */ - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c, - "session(%ld): pool_cleanup", session->id); + conn_rec *c = session->c; + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, + H2_SSSN_MSG(session, "pool_cleanup")); - if (session->state != H2_SESSION_ST_DONE - && session->state != H2_SESSION_ST_LOCAL_SHUTDOWN) { + if (session->state != H2_SESSION_ST_DONE + && session->state != H2_SESSION_ST_INIT) { /* Not good. The connection is being torn down and we have * not sent a goaway. This is considered a protocol error and * the client has to assume that any streams "in flight" may have @@ -789,199 +687,210 @@ static apr_status_t session_pool_cleanup * connection when sending the next request, this has the effect * that at least this one request will fail. */ - ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, session->c, APLOGNO(03199) - "session(%ld): connection disappeared without proper " - "goodbye, clients will be confused, should not happen", - session->id); - } - /* keep us from destroying the pool, since that is already ongoing. */ - session->pool = NULL; - h2_session_destroy(session); - return APR_SUCCESS; -} - -static void *session_malloc(size_t size, void *ctx) -{ - h2_session *session = ctx; - ap_log_cerror(APLOG_MARK, APLOG_TRACE6, 0, session->c, - "h2_session(%ld): malloc(%ld)", - session->id, (long)size); - return malloc(size); -} - -static void session_free(void *p, void *ctx) -{ - h2_session *session = ctx; - - ap_log_cerror(APLOG_MARK, APLOG_TRACE6, 0, session->c, - "h2_session(%ld): free()", - session->id); - free(p); -} - -static void *session_calloc(size_t n, size_t size, void *ctx) -{ - h2_session *session = ctx; + ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, c, + H2_SSSN_LOG(APLOGNO(03199), session, + "connection disappeared without proper " + "goodbye, clients will be confused, should not happen")); + } - ap_log_cerror(APLOG_MARK, APLOG_TRACE6, 0, session->c, - "h2_session(%ld): calloc(%ld, %ld)", - session->id, (long)n, (long)size); - return calloc(n, size); + transit(session, trigger, H2_SESSION_ST_CLEANUP); + h2_mplx_release_and_join(session->mplx, session->iowait); + session->mplx = NULL; + + ap_assert(session->ngh2); + nghttp2_session_del(session->ngh2); + session->ngh2 = NULL; + h2_ctx_clear(c); + + + return APR_SUCCESS; } -static void *session_realloc(void *p, size_t size, void *ctx) +static apr_status_t session_pool_cleanup(void *data) { - h2_session *session = ctx; - ap_log_cerror(APLOG_MARK, APLOG_TRACE6, 0, session->c, - "h2_session(%ld): realloc(%ld)", - session->id, (long)size); - return realloc(p, size); + conn_rec *c = data; + h2_session *session; + h2_ctx *ctx = h2_ctx_get(c, 0); + + if (ctx && (session = h2_ctx_session_get(ctx))) { + /* if the session is still there, now is the last chance + * to perform cleanup. Normally, cleanup should have happened + * earlier in the connection pre_close. Main reason is that + * any ongoing requests on slave connections might still access + * data which has, at this time, already been freed. An example + * is mod_ssl that uses request hooks. */ + ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, c, + H2_SSSN_LOG(APLOGNO(10020), session, + "session cleanup triggered by pool cleanup. " + "this should have happened earlier already.")); + return session_cleanup(session, "pool cleanup"); + } + return APR_SUCCESS; } -static h2_session *h2_session_create_int(conn_rec *c, - request_rec *r, - h2_ctx *ctx, - h2_workers *workers) +static apr_status_t h2_session_create_int(h2_session **psession, + conn_rec *c, + request_rec *r, + h2_ctx *ctx, + h2_workers *workers) { nghttp2_session_callbacks *callbacks = NULL; nghttp2_option *options = NULL; + apr_allocator_t *allocator; + apr_thread_mutex_t *mutex; uint32_t n; - apr_pool_t *pool = NULL; - apr_status_t status = apr_pool_create(&pool, c->pool); h2_session *session; + apr_status_t status; + int rv; + + *psession = NULL; + status = apr_allocator_create(&allocator); if (status != APR_SUCCESS) { - return NULL; + return status; + } + apr_allocator_max_free_set(allocator, ap_max_mem_free); + apr_pool_create_ex(&pool, c->pool, NULL, allocator); + if (!pool) { + apr_allocator_destroy(allocator); + return APR_ENOMEM; } apr_pool_tag(pool, "h2_session"); - + apr_allocator_owner_set(allocator, pool); + status = apr_thread_mutex_create(&mutex, APR_THREAD_MUTEX_DEFAULT, pool); + if (status != APR_SUCCESS) { + apr_pool_destroy(pool); + return APR_ENOMEM; + } + apr_allocator_mutex_set(allocator, mutex); + session = apr_pcalloc(pool, sizeof(h2_session)); - if (session) { - int rv; - nghttp2_mem *mem; - - session->id = c->id; - session->c = c; - session->r = r; - session->s = h2_ctx_server_get(ctx); - session->pool = pool; - session->config = h2_config_sget(session->s); - session->workers = workers; - - session->state = H2_SESSION_ST_INIT; - session->local.accepting = 1; - session->remote.accepting = 1; - - apr_pool_pre_cleanup_register(pool, session, session_pool_cleanup); - - session->max_stream_count = h2_config_geti(session->config, - H2_CONF_MAX_STREAMS); - session->max_stream_mem = h2_config_geti(session->config, - H2_CONF_STREAM_MAX_MEM); - - status = apr_thread_cond_create(&session->iowait, session->pool); - if (status != APR_SUCCESS) { - return NULL; - } - - session->streams = h2_ihash_create(session->pool, - offsetof(h2_stream, id)); - session->mplx = h2_mplx_create(c, session->pool, session->config, - session->s->timeout, workers); - - h2_mplx_set_consumed_cb(session->mplx, update_window, session); - - /* Install the connection input filter that feeds the session */ - session->cin = h2_filter_cin_create(session->pool, - h2_session_receive, session); - ap_add_input_filter("H2_IN", session->cin, r, c); - - h2_conn_io_init(&session->io, c, session->config); - session->bbtmp = apr_brigade_create(session->pool, c->bucket_alloc); - - status = init_callbacks(c, &callbacks); - if (status != APR_SUCCESS) { - ap_log_cerror(APLOG_MARK, APLOG_ERR, status, c, APLOGNO(02927) - "nghttp2: error in init_callbacks"); - h2_session_destroy(session); - return NULL; - } - - rv = nghttp2_option_new(&options); - if (rv != 0) { - ap_log_cerror(APLOG_MARK, APLOG_ERR, APR_EGENERAL, c, - APLOGNO(02928) "nghttp2_option_new: %s", - nghttp2_strerror(rv)); - h2_session_destroy(session); - return NULL; - } - nghttp2_option_set_peer_max_concurrent_streams( - options, (uint32_t)session->max_stream_count); - /* We need to handle window updates ourself, otherwise we - * get flooded by nghttp2. */ - nghttp2_option_set_no_auto_window_update(options, 1); - - if (APLOGctrace6(c)) { - mem = apr_pcalloc(session->pool, sizeof(nghttp2_mem)); - mem->mem_user_data = session; - mem->malloc = session_malloc; - mem->free = session_free; - mem->calloc = session_calloc; - mem->realloc = session_realloc; - - rv = nghttp2_session_server_new3(&session->ngh2, callbacks, - session, options, mem); - } - else { - rv = nghttp2_session_server_new2(&session->ngh2, callbacks, - session, options); - } - nghttp2_session_callbacks_del(callbacks); - nghttp2_option_del(options); - - if (rv != 0) { - ap_log_cerror(APLOG_MARK, APLOG_ERR, APR_EGENERAL, c, - APLOGNO(02929) "nghttp2_session_server_new: %s", - nghttp2_strerror(rv)); - h2_session_destroy(session); - return NULL; - } - - n = h2_config_geti(session->config, H2_CONF_PUSH_DIARY_SIZE); - session->push_diary = h2_push_diary_create(session->pool, n); - - if (APLOGcdebug(c)) { - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, c, APLOGNO(03200) - "h2_session(%ld) created, max_streams=%d, " - "stream_mem=%d, workers_limit=%d, workers_max=%d, " - "push_diary(type=%d,N=%d)", - session->id, (int)session->max_stream_count, - (int)session->max_stream_mem, - session->mplx->workers_limit, - session->mplx->workers_max, - session->push_diary->dtype, - (int)session->push_diary->N); - } + if (!session) { + return APR_ENOMEM; + } + + *psession = session; + session->id = c->id; + session->c = c; + session->r = r; + session->s = h2_ctx_server_get(ctx); + session->pool = pool; + session->config = h2_config_sget(session->s); + session->workers = workers; + + session->state = H2_SESSION_ST_INIT; + session->local.accepting = 1; + session->remote.accepting = 1; + + session->max_stream_count = h2_config_geti(session->config, + H2_CONF_MAX_STREAMS); + session->max_stream_mem = h2_config_geti(session->config, + H2_CONF_STREAM_MAX_MEM); + + status = apr_thread_cond_create(&session->iowait, session->pool); + if (status != APR_SUCCESS) { + apr_pool_destroy(pool); + return status; + } + + session->in_pending = h2_iq_create(session->pool, (int)session->max_stream_count); + if (session->in_pending == NULL) { + apr_pool_destroy(pool); + return APR_ENOMEM; } - return session; -} -h2_session *h2_session_create(conn_rec *c, h2_ctx *ctx, h2_workers *workers) -{ - return h2_session_create_int(c, NULL, ctx, workers); + session->in_process = h2_iq_create(session->pool, (int)session->max_stream_count); + if (session->in_process == NULL) { + apr_pool_destroy(pool); + return APR_ENOMEM; + } + + session->monitor = apr_pcalloc(pool, sizeof(h2_stream_monitor)); + if (session->monitor == NULL) { + apr_pool_destroy(pool); + return APR_ENOMEM; + } + session->monitor->ctx = session; + session->monitor->on_state_enter = on_stream_state_enter; + session->monitor->on_state_event = on_stream_state_event; + session->monitor->on_event = on_stream_event; + + session->mplx = h2_mplx_create(c, session->pool, session->config, + workers); + + /* connection input filter that feeds the session */ + session->cin = h2_filter_cin_create(session); + ap_add_input_filter("H2_IN", session->cin, r, c); + + h2_conn_io_init(&session->io, c, session->config); + session->bbtmp = apr_brigade_create(session->pool, c->bucket_alloc); + + status = init_callbacks(c, &callbacks); + if (status != APR_SUCCESS) { + ap_log_cerror(APLOG_MARK, APLOG_ERR, status, c, APLOGNO(02927) + "nghttp2: error in init_callbacks"); + apr_pool_destroy(pool); + return status; + } + + rv = nghttp2_option_new(&options); + if (rv != 0) { + ap_log_cerror(APLOG_MARK, APLOG_ERR, APR_EGENERAL, c, + APLOGNO(02928) "nghttp2_option_new: %s", + nghttp2_strerror(rv)); + apr_pool_destroy(pool); + return status; + } + nghttp2_option_set_peer_max_concurrent_streams( + options, (uint32_t)session->max_stream_count); + /* We need to handle window updates ourself, otherwise we + * get flooded by nghttp2. */ + nghttp2_option_set_no_auto_window_update(options, 1); + + rv = nghttp2_session_server_new2(&session->ngh2, callbacks, + session, options); + nghttp2_session_callbacks_del(callbacks); + nghttp2_option_del(options); + + if (rv != 0) { + ap_log_cerror(APLOG_MARK, APLOG_ERR, APR_EGENERAL, c, + APLOGNO(02929) "nghttp2_session_server_new: %s", + nghttp2_strerror(rv)); + apr_pool_destroy(pool); + return APR_ENOMEM; + } + + n = h2_config_geti(session->config, H2_CONF_PUSH_DIARY_SIZE); + session->push_diary = h2_push_diary_create(session->pool, n); + + if (APLOGcdebug(c)) { + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, c, + H2_SSSN_LOG(APLOGNO(03200), session, + "created, max_streams=%d, stream_mem=%d, " + "workers_limit=%d, workers_max=%d, " + "push_diary(type=%d,N=%d)"), + (int)session->max_stream_count, + (int)session->max_stream_mem, + session->mplx->limit_active, + session->mplx->max_active, + session->push_diary->dtype, + (int)session->push_diary->N); + } + + apr_pool_pre_cleanup_register(pool, c, session_pool_cleanup); + return APR_SUCCESS; } -h2_session *h2_session_rcreate(request_rec *r, h2_ctx *ctx, h2_workers *workers) +apr_status_t h2_session_create(h2_session **psession, + conn_rec *c, h2_ctx *ctx, h2_workers *workers) { - return h2_session_create_int(r->connection, r, ctx, workers); + return h2_session_create_int(psession, c, NULL, ctx, workers); } -void h2_session_eoc_callback(h2_session *session) +apr_status_t h2_session_rcreate(h2_session **psession, + request_rec *r, h2_ctx *ctx, h2_workers *workers) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c, - "session(%ld): cleanup and destroy", session->id); - apr_pool_cleanup_kill(session->pool, session, session_pool_cleanup); - h2_session_destroy(session); + return h2_session_create_int(psession, r->connection, r, ctx, workers); } static apr_status_t h2_session_start(h2_session *session, int *rv) @@ -991,7 +900,7 @@ static apr_status_t h2_session_start(h2_ size_t slen; int win_size; - AP_DEBUG_ASSERT(session); + ap_assert(session); /* Start the conversation by submitting our SETTINGS frame */ *rv = 0; if (session->r) { @@ -1029,7 +938,7 @@ static apr_status_t h2_session_start(h2_ } /* Now we need to auto-open stream 1 for the request we got. */ - stream = h2_session_open_stream(session, 1, 0, NULL); + stream = h2_session_open_stream(session, 1, 0); if (!stream) { status = APR_EGENERAL; ap_log_rerror(APLOG_MARK, APLOG_ERR, status, session->r, @@ -1038,11 +947,7 @@ static apr_status_t h2_session_start(h2_ return status; } - status = h2_stream_set_request(stream, session->r); - if (status != APR_SUCCESS) { - return status; - } - status = stream_schedule(session, stream, 1); + status = h2_stream_set_request_rec(stream, session->r, 1); if (status != APR_SUCCESS) { return status; } @@ -1059,17 +964,17 @@ static apr_status_t h2_session_start(h2_ ++slen; } - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, session->c, APLOGNO(03201) - "h2_session(%ld): start, INITIAL_WINDOW_SIZE=%ld, " - "MAX_CONCURRENT_STREAMS=%d", - session->id, (long)win_size, (int)session->max_stream_count); + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, session->c, + H2_SSSN_LOG(APLOGNO(03201), session, + "start, INITIAL_WINDOW_SIZE=%ld, MAX_CONCURRENT_STREAMS=%d"), + (long)win_size, (int)session->max_stream_count); *rv = nghttp2_submit_settings(session->ngh2, NGHTTP2_FLAG_NONE, settings, slen); if (*rv != 0) { status = APR_EGENERAL; ap_log_cerror(APLOG_MARK, APLOG_ERR, status, session->c, - APLOGNO(02935) "nghttp2_submit_settings: %s", - nghttp2_strerror(*rv)); + H2_SSSN_LOG(APLOGNO(02935), session, + "nghttp2_submit_settings: %s"), nghttp2_strerror(*rv)); } else { /* use maximum possible value for connection window size. We are only @@ -1086,7 +991,8 @@ static apr_status_t h2_session_start(h2_ if (*rv != 0) { status = APR_EGENERAL; ap_log_cerror(APLOG_MARK, APLOG_ERR, status, session->c, - APLOGNO(02970) "nghttp2_submit_window_update: %s", + H2_SSSN_LOG(APLOGNO(02970), session, + "nghttp2_submit_window_update: %s"), nghttp2_strerror(*rv)); } } @@ -1094,6 +1000,10 @@ static apr_status_t h2_session_start(h2_ return status; } +static apr_status_t on_stream_headers(h2_session *session, h2_stream *stream, + h2_headers *headers, apr_off_t len, + int eos); + static ssize_t stream_data_cb(nghttp2_session *ng2s, int32_t stream_id, uint8_t *buf, @@ -1107,7 +1017,7 @@ static ssize_t stream_data_cb(nghttp2_se int eos = 0; apr_status_t status; h2_stream *stream; - AP_DEBUG_ASSERT(session); + ap_assert(session); /* The session wants to send more DATA for the stream. We need * to find out how much of the requested length we can send without @@ -1119,19 +1029,20 @@ static ssize_t stream_data_cb(nghttp2_se (void)ng2s; (void)buf; (void)source; - stream = get_stream(session, stream_id); + stream = h2_session_stream_get(session, stream_id); if (!stream) { ap_log_cerror(APLOG_MARK, APLOG_ERR, 0, session->c, APLOGNO(02937) - "h2_stream(%ld-%d): data requested but stream not found", + "h2_stream(%ld-%d): data_cb, stream not found", session->id, (int)stream_id); return NGHTTP2_ERR_CALLBACK_FAILURE; } - - AP_DEBUG_ASSERT(!h2_stream_is_suspended(stream)); - - status = h2_stream_out_prepare(stream, &nread, &eos); + + status = h2_stream_out_prepare(stream, &nread, &eos, NULL); if (nread) { + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, session->c, + H2_STRM_MSG(stream, "prepared no_copy, len=%ld, eos=%d"), + (long)nread, eos); *data_flags |= NGHTTP2_DATA_FLAG_NO_COPY; } @@ -1140,8 +1051,8 @@ static ssize_t stream_data_cb(nghttp2_se break; case APR_ECONNRESET: - return nghttp2_submit_rst_stream(ng2s, NGHTTP2_FLAG_NONE, - stream->id, stream->rst_error); + case APR_ECONNABORTED: + return NGHTTP2_ERR_CALLBACK_FAILURE; case APR_EAGAIN: /* If there is no data available, our session will automatically @@ -1149,96 +1060,62 @@ static ssize_t stream_data_cb(nghttp2_se * it. Remember at our h2_stream that we need to do this. */ nread = 0; - h2_mplx_suspend_stream(session->mplx, stream->id); - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03071) - "h2_stream(%ld-%d): suspending", - session->id, (int)stream_id); + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, + H2_STRM_LOG(APLOGNO(03071), stream, "suspending")); return NGHTTP2_ERR_DEFERRED; default: nread = 0; - ap_log_cerror(APLOG_MARK, APLOG_ERR, status, session->c, - APLOGNO(02938) "h2_stream(%ld-%d): reading data", - session->id, (int)stream_id); + ap_log_cerror(APLOG_MARK, APLOG_ERR, status, session->c, + H2_STRM_LOG(APLOGNO(02938), stream, "reading data")); return NGHTTP2_ERR_CALLBACK_FAILURE; } if (eos) { - apr_table_t *trailers = h2_stream_get_trailers(stream); - if (trailers && !apr_is_empty_table(trailers)) { - h2_ngheader *nh; - int rv; - - nh = h2_util_ngheader_make(stream->pool, trailers); - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03072) - "h2_stream(%ld-%d): submit %d trailers", - session->id, (int)stream_id,(int) nh->nvlen); - rv = nghttp2_submit_trailer(ng2s, stream->id, nh->nv, nh->nvlen); - if (rv < 0) { - nread = rv; - } - *data_flags |= NGHTTP2_DATA_FLAG_NO_END_STREAM; - } - *data_flags |= NGHTTP2_DATA_FLAG_EOF; } - return (ssize_t)nread; } -typedef struct { - nghttp2_nv *nv; - size_t nvlen; - size_t offset; -} nvctx_t; - struct h2_stream *h2_session_push(h2_session *session, h2_stream *is, h2_push *push) { - apr_status_t status; h2_stream *stream; h2_ngheader *ngh; - int nid; + apr_status_t status; + int nid = 0; - ngh = h2_util_ngheader_make_req(is->pool, push->req); - nid = nghttp2_submit_push_promise(session->ngh2, 0, is->id, - ngh->nv, ngh->nvlen, NULL); - if (nid <= 0) { - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03075) - "h2_stream(%ld-%d): submitting push promise fail: %s", - session->id, is->id, nghttp2_strerror(nid)); + status = h2_req_create_ngheader(&ngh, is->pool, push->req); + if (status == APR_SUCCESS) { + nid = nghttp2_submit_push_promise(session->ngh2, 0, is->id, + ngh->nv, ngh->nvlen, NULL); + } + if (status != APR_SUCCESS || nid <= 0) { + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, session->c, + H2_STRM_LOG(APLOGNO(03075), is, + "submitting push promise fail: %s"), nghttp2_strerror(nid)); return NULL; } ++session->pushes_promised; - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03076) - "h2_stream(%ld-%d): SERVER_PUSH %d for %s %s on %d", - session->id, is->id, nid, - push->req->method, push->req->path, is->id); + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, + H2_STRM_LOG(APLOGNO(03076), is, "SERVER_PUSH %d for %s %s on %d"), + nid, push->req->method, push->req->path, is->id); - stream = h2_session_open_stream(session, nid, is->id, push->req); - if (stream) { - status = stream_schedule(session, stream, 1); - if (status != APR_SUCCESS) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, session->c, - "h2_stream(%ld-%d): scheduling push stream", - session->id, stream->id); - stream = NULL; - } - ++session->unsent_promises; - } - else { - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03077) - "h2_stream(%ld-%d): failed to create stream obj %d", - session->id, is->id, nid); - } - + stream = h2_session_open_stream(session, nid, is->id); if (!stream) { - /* try to tell the client that it should not wait. */ + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, + H2_STRM_LOG(APLOGNO(03077), stream, + "failed to create stream obj %d"), nid); + /* kill the push_promise */ nghttp2_submit_rst_stream(session->ngh2, NGHTTP2_FLAG_NONE, nid, NGHTTP2_INTERNAL_ERROR); + return NULL; } + h2_session_set_prio(session, stream, push->priority); + h2_stream_set_request(stream, push->req); + ++session->unsent_promises; return stream; } @@ -1256,19 +1133,23 @@ apr_status_t h2_session_set_prio(h2_sess #ifdef H2_NG2_CHANGE_PRIO nghttp2_stream *s_grandpa, *s_parent, *s; + if (prio == NULL) { + /* we treat this as a NOP */ + return APR_SUCCESS; + } s = nghttp2_session_find_stream(session->ngh2, stream->id); if (!s) { ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c, - "h2_stream(%ld-%d): lookup of nghttp2_stream failed", - session->id, stream->id); + H2_STRM_MSG(stream, "lookup of nghttp2_stream failed")); return APR_EINVAL; } s_parent = nghttp2_stream_get_parent(s); if (s_parent) { nghttp2_priority_spec ps; - int id_parent, id_grandpa, w_parent, w, rv = 0; - char *ptype = "AFTER"; + int id_parent, id_grandpa, w_parent, w; + int rv = 0; + const char *ptype = "AFTER"; h2_dependency dep = prio->dependency; id_parent = nghttp2_stream_get_stream_id(s_parent); @@ -1329,11 +1210,10 @@ apr_status_t h2_session_set_prio(h2_sess rv = nghttp2_session_change_stream_priority(session->ngh2, stream->id, &ps); - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03203) - "h2_stream(%ld-%d): PUSH %s, weight=%d, " - "depends=%d, returned=%d", - session->id, stream->id, ptype, - ps.weight, ps.stream_id, rv); + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, + ""H2_STRM_LOG(APLOGNO(03203), stream, + "PUSH %s, weight=%d, depends=%d, returned=%d"), + ptype, ps.weight, ps.stream_id, rv); status = (rv < 0)? APR_EGENERAL : APR_SUCCESS; } #else @@ -1372,7 +1252,7 @@ static apr_status_t h2_session_send(h2_s apr_socket_timeout_set(socket, saved_timeout); } session->have_written = 1; - if (rv != 0) { + if (rv != 0 && rv != NGHTTP2_ERR_WOULDBLOCK) { if (nghttp2_is_fatal(rv)) { dispatch_event(session, H2_SESSION_EV_PROTO_ERROR, rv, nghttp2_strerror(rv)); return APR_EGENERAL; @@ -1386,63 +1266,52 @@ static apr_status_t h2_session_send(h2_s } /** - * A stream was resumed as new output data arrived. + * headers for the stream are ready. */ -static apr_status_t on_stream_resume(void *ctx, int stream_id) +static apr_status_t on_stream_headers(h2_session *session, h2_stream *stream, + h2_headers *headers, apr_off_t len, + int eos) { - h2_session *session = ctx; - h2_stream *stream = get_stream(session, stream_id); apr_status_t status = APR_SUCCESS; - - ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, session->c, - "h2_stream(%ld-%d): on_resume", session->id, stream_id); - if (stream) { - int rv = nghttp2_session_resume_data(session->ngh2, stream_id); - session->have_written = 1; - ap_log_cerror(APLOG_MARK, nghttp2_is_fatal(rv)? - APLOG_ERR : APLOG_DEBUG, 0, session->c, - APLOGNO(02936) - "h2_stream(%ld-%d): resuming %s", - session->id, stream->id, rv? nghttp2_strerror(rv) : ""); - } - return status; -} - -/** - * A response for the stream is ready. - */ -static apr_status_t on_stream_response(void *ctx, int stream_id) -{ - h2_session *session = ctx; - h2_stream *stream = get_stream(session, stream_id); - apr_status_t status = APR_SUCCESS; - h2_response *response; int rv = 0; - AP_DEBUG_ASSERT(session); + ap_assert(session); ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, session->c, - "h2_stream(%ld-%d): on_response", session->id, stream_id); - if (!stream) { - return APR_NOTFOUND; - } - - response = h2_stream_get_response(stream); - AP_DEBUG_ASSERT(response || stream->rst_error); - - if (stream->submitted) { - rv = NGHTTP2_PROTOCOL_ERROR; + H2_STRM_MSG(stream, "on_headers")); + if (headers->status < 100) { + h2_stream_rst(stream, headers->status); + goto leave; + } + else if (stream->has_response) { + h2_ngheader *nh; + + status = h2_res_create_ngtrailer(&nh, stream->pool, headers); + + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, session->c, + H2_STRM_LOG(APLOGNO(03072), stream, "submit %d trailers"), + (int)nh->nvlen); + if (status == APR_SUCCESS) { + rv = nghttp2_submit_trailer(session->ngh2, stream->id, + nh->nv, nh->nvlen); + } + else { + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, session->c, + H2_STRM_LOG(APLOGNO(10024), stream, "invalid trailers")); + h2_stream_rst(stream, NGHTTP2_PROTOCOL_ERROR); + } + goto leave; } - else if (response && response->headers) { + else { nghttp2_data_provider provider, *pprovider = NULL; h2_ngheader *ngh; - const h2_priority *prio; + const char *note; - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03073) - "h2_stream(%ld-%d): submit response %d, REMOTE_WINDOW_SIZE=%u", - session->id, stream->id, response->http_status, + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, + H2_STRM_LOG(APLOGNO(03073), stream, "submit response %d, REMOTE_WINDOW_SIZE=%u"), + headers->status, (unsigned int)nghttp2_session_get_stream_remote_window_size(session->ngh2, stream->id)); - if (response->content_length != 0) { + if (!eos || len > 0) { memset(&provider, 0, sizeof(provider)); provider.source.fd = stream->id; provider.read_callback = stream_data_cb; @@ -1451,7 +1320,7 @@ static apr_status_t on_stream_response(v /* If this stream is not a pushed one itself, * and HTTP/2 server push is enabled here, - * and the response is in the range 200-299 *), + * and the response HTTP status is not sth >= 400, * and the remote side has pushing enabled, * -> find and perform any pushes on this stream * *before* we submit the stream response itself. @@ -1459,50 +1328,70 @@ static apr_status_t on_stream_response(v * headers that get pushed right afterwards. * * *) the response code is relevant, as we do not want to - * make pushes on 401 or 403 codes, neiterh on 301/302 - * and friends. And if we see a 304, we do not push either + * make pushes on 401 or 403 codes and friends. + * And if we see a 304, we do not push either * as the client, having this resource in its cache, might * also have the pushed ones as well. */ - if (stream->request && !stream->request->initiated_on - && H2_HTTP_2XX(response->http_status) + if (!stream->initiated_on + && !stream->has_response + && stream->request && stream->request->method + && !strcmp("GET", stream->request->method) + && (headers->status < 400) + && (headers->status != 304) && h2_session_push_enabled(session)) { - h2_stream_submit_pushes(stream); + h2_stream_submit_pushes(stream, headers); } - prio = h2_stream_get_priority(stream); - if (prio) { - h2_session_set_prio(session, stream, prio); - /* no showstopper if that fails for some reason */ + if (!stream->pref_priority) { + stream->pref_priority = h2_stream_get_priority(stream, headers); } + h2_session_set_prio(session, stream, stream->pref_priority); - ngh = h2_util_ngheader_make_res(stream->pool, response->http_status, - response->headers); - rv = nghttp2_submit_response(session->ngh2, response->stream_id, - ngh->nv, ngh->nvlen, pprovider); - } - else { - int err = H2_STREAM_RST(stream, H2_ERR_PROTOCOL_ERROR); - - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03074) - "h2_stream(%ld-%d): RST_STREAM, err=%d", - session->id, stream->id, err); + note = apr_table_get(headers->notes, H2_FILTER_DEBUG_NOTE); + if (note && !strcmp("on", note)) { + int32_t connFlowIn, connFlowOut; - rv = nghttp2_submit_rst_stream(session->ngh2, NGHTTP2_FLAG_NONE, - stream->id, err); - } - - stream->submitted = 1; - session->have_written = 1; - - if (stream->request && stream->request->initiated_on) { - ++session->pushes_submitted; - } - else { - ++session->responses_submitted; + connFlowIn = nghttp2_session_get_effective_local_window_size(session->ngh2); + connFlowOut = nghttp2_session_get_remote_window_size(session->ngh2); + headers = h2_headers_copy(stream->pool, headers); + apr_table_setn(headers->headers, "conn-flow-in", + apr_itoa(stream->pool, connFlowIn)); + apr_table_setn(headers->headers, "conn-flow-out", + apr_itoa(stream->pool, connFlowOut)); + } + + if (headers->status == 103 + && !h2_config_geti(session->config, H2_CONF_EARLY_HINTS)) { + /* suppress sending this to the client, it might have triggered + * pushes and served its purpose nevertheless */ + rv = 0; + goto leave; + } + + status = h2_res_create_ngheader(&ngh, stream->pool, headers); + if (status == APR_SUCCESS) { + rv = nghttp2_submit_response(session->ngh2, stream->id, + ngh->nv, ngh->nvlen, pprovider); + stream->has_response = h2_headers_are_response(headers); + session->have_written = 1; + + if (stream->initiated_on) { + ++session->pushes_submitted; + } + else { + ++session->responses_submitted; + } + } + else { + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, session->c, + H2_STRM_LOG(APLOGNO(10025), stream, "invalid response")); + h2_stream_rst(stream, NGHTTP2_PROTOCOL_ERROR); + } } +leave: if (nghttp2_is_fatal(rv)) { status = APR_EGENERAL; dispatch_event(session, H2_SESSION_EV_PROTO_ERROR, rv, nghttp2_strerror(rv)); @@ -1527,32 +1416,80 @@ static apr_status_t on_stream_response(v return status; } -static apr_status_t h2_session_receive(void *ctx, const char *data, - apr_size_t len, apr_size_t *readlen) +/** + * A stream was resumed as new response/output data arrived. + */ +static apr_status_t on_stream_resume(void *ctx, h2_stream *stream) { h2_session *session = ctx; - ssize_t n; + apr_status_t status = APR_EAGAIN; + int rv; + apr_off_t len = 0; + int eos = 0; + h2_headers *headers; + + ap_assert(stream); + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, session->c, + H2_STRM_MSG(stream, "on_resume")); + +send_headers: + headers = NULL; + status = h2_stream_out_prepare(stream, &len, &eos, &headers); + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, status, session->c, + H2_STRM_MSG(stream, "prepared len=%ld, eos=%d"), + (long)len, eos); + if (headers) { + status = on_stream_headers(session, stream, headers, len, eos); + if (status != APR_SUCCESS || stream->rst_error) { + return status; + } + goto send_headers; + } + else if (status != APR_EAGAIN) { + /* we have DATA to send */ + if (!stream->has_response) { + /* but no response */ + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, + H2_STRM_LOG(APLOGNO(03466), stream, + "no response, RST_STREAM")); + h2_stream_rst(stream, H2_ERR_PROTOCOL_ERROR); + return APR_SUCCESS; + } + rv = nghttp2_session_resume_data(session->ngh2, stream->id); + session->have_written = 1; + ap_log_cerror(APLOG_MARK, nghttp2_is_fatal(rv)? + APLOG_ERR : APLOG_DEBUG, 0, session->c, + H2_STRM_LOG(APLOGNO(02936), stream, "resumed")); + } + return status; +} + +static void h2_session_in_flush(h2_session *session) +{ + int id; - if (len > 0) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, session->c, - "h2_session(%ld): feeding %ld bytes to nghttp2", - session->id, (long)len); - n = nghttp2_session_mem_recv(session->ngh2, (const uint8_t *)data, len); - if (n < 0) { - if (nghttp2_is_fatal((int)n)) { - dispatch_event(session, H2_SESSION_EV_PROTO_ERROR, (int)n, nghttp2_strerror(n)); - return APR_EGENERAL; + while ((id = h2_iq_shift(session->in_process)) > 0) { + h2_stream *stream = h2_session_stream_get(session, id); + if (stream) { + ap_assert(!stream->scheduled); + if (h2_stream_prep_processing(stream) == APR_SUCCESS) { + h2_mplx_process(session->mplx, stream, stream_pri_cmp, session); + } + else { + h2_stream_rst(stream, H2_ERR_INTERNAL_ERROR); } } - else { - *readlen = n; - session->io.bytes_read += n; + } + + while ((id = h2_iq_shift(session->in_pending)) > 0) { + h2_stream *stream = h2_session_stream_get(session, id); + if (stream) { + h2_stream_flush_input(stream); } } - return APR_SUCCESS; } -static apr_status_t h2_session_read(h2_session *session, int block) +static apr_status_t session_read(h2_session *session, apr_size_t readlen, int block) { apr_status_t status, rstatus = APR_EAGAIN; conn_rec *c = session->c; @@ -1564,7 +1501,7 @@ static apr_status_t h2_session_read(h2_s status = ap_get_brigade(c->input_filters, session->bbtmp, AP_MODE_READBYTES, block? APR_BLOCK_READ : APR_NONBLOCK_READ, - APR_BUCKET_BUFF_SIZE); + H2MAX(APR_BUCKET_BUFF_SIZE, readlen)); /* get rid of any possible data we do not expect to get */ apr_brigade_cleanup(session->bbtmp); @@ -1573,7 +1510,7 @@ static apr_status_t h2_session_read(h2_s /* successful read, reset our idle timers */ rstatus = APR_SUCCESS; if (block) { - /* successfull blocked read, try unblocked to + /* successful blocked read, try unblocked to * get more. */ block = 0; } @@ -1591,15 +1528,14 @@ static apr_status_t h2_session_read(h2_s || APR_STATUS_IS_EOF(status) || APR_STATUS_IS_EBADF(status)) { /* common status for a client that has left */ - ap_log_cerror( APLOG_MARK, APLOG_TRACE1, status, c, - "h2_session(%ld): input gone", session->id); + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, c, + H2_SSSN_MSG(session, "input gone")); } else { /* uncommon status, log on INFO so that we see this */ ap_log_cerror( APLOG_MARK, APLOG_DEBUG, status, c, - APLOGNO(02950) - "h2_session(%ld): error reading, terminating", - session->id); + H2_SSSN_LOG(APLOGNO(02950), session, + "error reading, terminating")); } return status; } @@ -1607,51 +1543,23 @@ static apr_status_t h2_session_read(h2_s * status. */ return rstatus; } - if (!is_accepting_streams(session)) { - break; - } - if ((session->io.bytes_read - read_start) > (64*1024)) { + if ((session->io.bytes_read - read_start) > readlen) { /* read enough in one go, give write a chance */ ap_log_cerror(APLOG_MARK, APLOG_TRACE2, status, c, - "h2_session(%ld): read 64k, returning", session->id); + H2_SSSN_MSG(session, "read enough, returning")); break; } } return rstatus; } -static int unsubmitted_iter(void *ctx, void *val) -{ - h2_stream *stream = val; - if (h2_stream_needs_submit(stream)) { - *((int *)ctx) = 1; - return 0; - } - return 1; -} - -static int has_unsubmitted_streams(h2_session *session) -{ - int has_unsubmitted = 0; - h2_ihash_iter(session->streams, unsubmitted_iter, &has_unsubmitted); - return has_unsubmitted; -} - -static int suspended_iter(void *ctx, void *val) -{ - h2_stream *stream = val; - if (h2_stream_is_suspended(stream)) { - *((int *)ctx) = 1; - return 0; - } - return 1; -} - -static int has_suspended_streams(h2_session *session) +static apr_status_t h2_session_read(h2_session *session, int block) { - int has_suspended = 0; - h2_ihash_iter(session->streams, suspended_iter, &has_suspended); - return has_suspended; + apr_status_t status = session_read(session, session->max_stream_mem + * H2MAX(2, session->open_streams), + block); + h2_session_in_flush(session); + return status; } static const char *StateNames[] = { @@ -1660,11 +1568,10 @@ static const char *StateNames[] = { "IDLE", /* H2_SESSION_ST_IDLE */ "BUSY", /* H2_SESSION_ST_BUSY */ "WAIT", /* H2_SESSION_ST_WAIT */ - "LSHUTDOWN", /* H2_SESSION_ST_LOCAL_SHUTDOWN */ - "RSHUTDOWN", /* H2_SESSION_ST_REMOTE_SHUTDOWN */ + "CLEANUP", /* H2_SESSION_ST_CLEANUP */ }; -static const char *state_name(h2_session_state state) +const char *h2_session_state_str(h2_session_state state) { if (state >= (sizeof(StateNames)/sizeof(StateNames[0]))) { return "unknown"; @@ -1672,18 +1579,6 @@ static const char *state_name(h2_session return StateNames[state]; } -static int is_accepting_streams(h2_session *session) -{ - switch (session->state) { - case H2_SESSION_ST_IDLE: - case H2_SESSION_ST_BUSY: - case H2_SESSION_ST_WAIT: - return 1; - default: - return 0; - } -} - static void update_child_status(h2_session *session, int status, const char *msg) { /* Assume that we also change code/msg when something really happened and @@ -1705,9 +1600,16 @@ static void update_child_status(h2_sessi static void transit(h2_session *session, const char *action, h2_session_state nstate) { if (session->state != nstate) { - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03078) - "h2_session(%ld): transit [%s] -- %s --> [%s]", session->id, - state_name(session->state), action, state_name(nstate)); + int loglvl = APLOG_DEBUG; + if ((session->state == H2_SESSION_ST_BUSY && nstate == H2_SESSION_ST_WAIT) + || (session->state == H2_SESSION_ST_WAIT && nstate == H2_SESSION_ST_BUSY)){ + loglvl = APLOG_TRACE1; + } + ap_log_cerror(APLOG_MARK, loglvl, 0, session->c, + H2_SSSN_LOG(APLOGNO(03078), session, + "transit [%s] -- %s --> [%s]"), + h2_session_state_str(session->state), action, + h2_session_state_str(nstate)); session->state = nstate; switch (session->state) { case H2_SESSION_ST_IDLE: @@ -1715,12 +1617,6 @@ static void transit(h2_session *session, SERVER_BUSY_KEEPALIVE : SERVER_BUSY_READ), "idle"); break; - case H2_SESSION_ST_REMOTE_SHUTDOWN: - update_child_status(session, SERVER_CLOSING, "remote goaway"); - break; - case H2_SESSION_ST_LOCAL_SHUTDOWN: - update_child_status(session, SERVER_CLOSING, "local goaway"); - break; case H2_SESSION_ST_DONE: update_child_status(session, SERVER_CLOSING, "done"); break; @@ -1745,39 +1641,22 @@ static void h2_session_ev_init(h2_sessio static void h2_session_ev_local_goaway(h2_session *session, int arg, const char *msg) { - session->local.accepting = 0; - cleanup_streams(session); - switch (session->state) { - case H2_SESSION_ST_LOCAL_SHUTDOWN: - /* already did that? */ - break; - case H2_SESSION_ST_IDLE: - case H2_SESSION_ST_REMOTE_SHUTDOWN: - /* all done */ - transit(session, "local goaway", H2_SESSION_ST_DONE); - break; - default: - transit(session, "local goaway", H2_SESSION_ST_LOCAL_SHUTDOWN); - break; + cleanup_unprocessed_streams(session); + if (!session->remote.shutdown) { + update_child_status(session, SERVER_CLOSING, "local goaway"); } + transit(session, "local goaway", H2_SESSION_ST_DONE); } static void h2_session_ev_remote_goaway(h2_session *session, int arg, const char *msg) { - session->remote.accepting = 0; - cleanup_streams(session); - switch (session->state) { - case H2_SESSION_ST_REMOTE_SHUTDOWN: - /* already received that? */ - break; - case H2_SESSION_ST_IDLE: - case H2_SESSION_ST_LOCAL_SHUTDOWN: - /* all done */ - transit(session, "remote goaway", H2_SESSION_ST_DONE); - break; - default: - transit(session, "remote goaway", H2_SESSION_ST_REMOTE_SHUTDOWN); - break; + if (!session->remote.shutdown) { + session->remote.error = arg; + session->remote.accepting = 0; + session->remote.shutdown = 1; + cleanup_unprocessed_streams(session); + update_child_status(session, SERVER_CLOSING, "remote goaway"); + transit(session, "remote goaway", H2_SESSION_ST_DONE); } } @@ -1786,14 +1665,14 @@ static void h2_session_ev_conn_error(h2_ switch (session->state) { case H2_SESSION_ST_INIT: case H2_SESSION_ST_DONE: - case H2_SESSION_ST_LOCAL_SHUTDOWN: /* just leave */ transit(session, "conn error", H2_SESSION_ST_DONE); break; default: - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03401) - "h2_session(%ld): conn error -> shutdown", session->id); + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, + H2_SSSN_LOG(APLOGNO(03401), session, + "conn error -> shutdown")); h2_session_shutdown(session, arg, msg, 0); break; } @@ -1801,31 +1680,19 @@ static void h2_session_ev_conn_error(h2_ static void h2_session_ev_proto_error(h2_session *session, int arg, const char *msg) { - switch (session->state) { - case H2_SESSION_ST_DONE: - case H2_SESSION_ST_LOCAL_SHUTDOWN: - /* just leave */ - transit(session, "proto error", H2_SESSION_ST_DONE); - break; - - default: - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03402) - "h2_session(%ld): proto error -> shutdown", session->id); - h2_session_shutdown(session, arg, msg, 0); - break; + if (!session->local.shutdown) { + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, + H2_SSSN_LOG(APLOGNO(03402), session, + "proto error -> shutdown")); + h2_session_shutdown(session, arg, msg, 0); } } static void h2_session_ev_conn_timeout(h2_session *session, int arg, const char *msg) { - switch (session->state) { - case H2_SESSION_ST_LOCAL_SHUTDOWN: - transit(session, "conn timeout", H2_SESSION_ST_DONE); - break; - default: - h2_session_shutdown(session, arg, msg, 1); - transit(session, "conn timeout", H2_SESSION_ST_DONE); - break; + transit(session, msg, H2_SESSION_ST_DONE); + if (!session->local.shutdown) { + h2_session_shutdown(session, arg, msg, 1); } } @@ -1833,8 +1700,6 @@ static void h2_session_ev_no_io(h2_sessi { switch (session->state) { case H2_SESSION_ST_BUSY: - case H2_SESSION_ST_LOCAL_SHUTDOWN: - case H2_SESSION_ST_REMOTE_SHUTDOWN: /* Nothing to READ, nothing to WRITE on the master connection. * Possible causes: * - we wait for the client to send us sth @@ -1842,11 +1707,11 @@ static void h2_session_ev_no_io(h2_sessi * - we have finished all streams and the client has sent GO_AWAY */ ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, session->c, - "h2_session(%ld): NO_IO event, %d streams open", - session->id, session->open_streams); + H2_SSSN_MSG(session, "NO_IO event, %d streams open"), + session->open_streams); + h2_conn_io_flush(&session->io); if (session->open_streams > 0) { - if (has_unsubmitted_streams(session) - || has_suspended_streams(session)) { + if (h2_mplx_awaits_data(session->mplx)) { /* waiting for at least one stream to produce data */ transit(session, "no io", H2_SESSION_ST_WAIT); } @@ -1867,7 +1732,7 @@ static void h2_session_ev_no_io(h2_sessi } } } - else if (is_accepting_streams(session)) { + else if (session->local.accepting) { /* When we have no streams, but accept new, switch to idle */ apr_time_t now = apr_time_now(); transit(session, "no io (keepalive)", H2_SESSION_ST_IDLE); @@ -1889,18 +1754,6 @@ static void h2_session_ev_no_io(h2_sessi } } -static void h2_session_ev_stream_ready(h2_session *session, int arg, const char *msg) -{ - switch (session->state) { - case H2_SESSION_ST_WAIT: - transit(session, "stream ready", H2_SESSION_ST_BUSY); - break; - default: - /* nop */ - break; - } -} - static void h2_session_ev_data_read(h2_session *session, int arg, const char *msg) { switch (session->state) { @@ -1930,35 +1783,26 @@ static void h2_session_ev_mpm_stopping(h { switch (session->state) { case H2_SESSION_ST_DONE: - case H2_SESSION_ST_LOCAL_SHUTDOWN: /* nop */ break; default: - h2_session_shutdown(session, arg, msg, 0); + h2_session_shutdown_notice(session); break; } } static void h2_session_ev_pre_close(h2_session *session, int arg, const char *msg) { - switch (session->state) { - case H2_SESSION_ST_DONE: - case H2_SESSION_ST_LOCAL_SHUTDOWN: - /* nop */ - break; - default: - h2_session_shutdown(session, arg, msg, 1); - break; - } + h2_session_shutdown(session, arg, msg, 1); } -static void h2_session_ev_stream_open(h2_session *session, int arg, const char *msg) +static void ev_stream_open(h2_session *session, h2_stream *stream) { - ++session->open_streams; + h2_iq_append(session->in_process, stream->id); switch (session->state) { case H2_SESSION_ST_IDLE: if (session->open_streams == 1) { - /* enter tiomeout, since we have a stream again */ + /* enter timeout, since we have a stream again */ session->idle_until = (session->s->timeout + apr_time_now()); } break; @@ -1967,9 +1811,14 @@ static void h2_session_ev_stream_open(h2 } } -static void h2_session_ev_stream_done(h2_session *session, int arg, const char *msg) +static void ev_stream_closed(h2_session *session, h2_stream *stream) { - --session->open_streams; + apr_bucket *b; + + if (H2_STREAM_CLIENT_INITIATED(stream->id) + && (stream->id > session->local.completed_max)) { + session->local.completed_max = stream->id; + } switch (session->state) { case H2_SESSION_ST_IDLE: if (session->open_streams == 0) { @@ -1981,6 +1830,90 @@ static void h2_session_ev_stream_done(h2 default: break; } + + /* The stream might have data in the buffers of the main connection. + * We can only free the allocated resources once all had been written. + * Send a special buckets on the connection that gets destroyed when + * all preceding data has been handled. On its destruction, it is safe + * to purge all resources of the stream. */ + b = h2_bucket_eos_create(session->c->bucket_alloc, stream); + APR_BRIGADE_INSERT_TAIL(session->bbtmp, b); + h2_conn_io_pass(&session->io, session->bbtmp); + apr_brigade_cleanup(session->bbtmp); +} + +static void on_stream_state_enter(void *ctx, h2_stream *stream) +{ + h2_session *session = ctx; + /* stream entered a new state */ + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, session->c, + H2_STRM_MSG(stream, "entered state")); + switch (stream->state) { + case H2_SS_IDLE: /* stream was created */ + ++session->open_streams; + if (H2_STREAM_CLIENT_INITIATED(stream->id)) { + ++session->remote.emitted_count; + if (stream->id > session->remote.emitted_max) { + session->remote.emitted_max = stream->id; + session->local.accepted_max = stream->id; + } + } + else { + if (stream->id > session->local.emitted_max) { + ++session->local.emitted_count; + session->remote.emitted_max = stream->id; + } + } + break; + case H2_SS_OPEN: /* stream has request headers */ + case H2_SS_RSVD_L: /* stream has request headers */ + ev_stream_open(session, stream); + break; + case H2_SS_CLOSED_L: /* stream output was closed */ + break; + case H2_SS_CLOSED_R: /* stream input was closed */ + break; + case H2_SS_CLOSED: /* stream in+out were closed */ + --session->open_streams; + ev_stream_closed(session, stream); + break; + case H2_SS_CLEANUP: + h2_mplx_stream_cleanup(session->mplx, stream); + break; + default: + break; + } +} + +static void on_stream_event(void *ctx, h2_stream *stream, + h2_stream_event_t ev) +{ + h2_session *session = ctx; + switch (ev) { + case H2_SEV_IN_DATA_PENDING: + h2_iq_append(session->in_pending, stream->id); + break; + default: + /* NOP */ + break; + } +} + +static void on_stream_state_event(void *ctx, h2_stream *stream, + h2_stream_event_t ev) +{ + h2_session *session = ctx; + switch (ev) { + case H2_SEV_CANCELLED: + if (session->state != H2_SESSION_ST_DONE) { + nghttp2_submit_rst_stream(session->ngh2, NGHTTP2_FLAG_NONE, + stream->id, stream->rst_error); + } + break; + default: + /* NOP */ + break; + } } static void dispatch_event(h2_session *session, h2_session_event_t ev, @@ -2008,9 +1941,6 @@ static void dispatch_event(h2_session *s case H2_SESSION_EV_NO_IO: h2_session_ev_no_io(session, arg, msg); break; - case H2_SESSION_EV_STREAM_READY: - h2_session_ev_stream_ready(session, arg, msg); - break; case H2_SESSION_EV_DATA_READ: h2_session_ev_data_read(session, arg, msg); break; @@ -2023,22 +1953,30 @@ static void dispatch_event(h2_session *s case H2_SESSION_EV_PRE_CLOSE: h2_session_ev_pre_close(session, arg, msg); break; - case H2_SESSION_EV_STREAM_OPEN: - h2_session_ev_stream_open(session, arg, msg); - break; - case H2_SESSION_EV_STREAM_DONE: - h2_session_ev_stream_done(session, arg, msg); - break; default: ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c, - "h2_session(%ld): unknown event %d", - session->id, ev); + H2_SSSN_MSG(session, "unknown event %d"), ev); break; } +} + +/* trigger window updates, stream resumes and submits */ +static apr_status_t dispatch_master(h2_session *session) { + apr_status_t status; - if (session->state == H2_SESSION_ST_DONE) { - h2_mplx_abort(session->mplx); + status = h2_mplx_dispatch_master_events(session->mplx, + on_stream_resume, session); + if (status == APR_EAGAIN) { + ap_log_cerror(APLOG_MARK, APLOG_TRACE3, status, session->c, + H2_SSSN_MSG(session, "no master event available")); + } + else if (status != APR_SUCCESS) { + ap_log_cerror(APLOG_MARK, APLOG_TRACE3, status, session->c, + H2_SSSN_MSG(session, "dispatch error")); + dispatch_event(session, H2_SESSION_EV_CONN_ERROR, + H2_ERR_INTERNAL_ERROR, "dispatch error"); } + return status; } static const int MAX_WAIT_MICROS = 200 * 1000; @@ -2051,22 +1989,16 @@ apr_status_t h2_session_process(h2_sessi if (trace) { ap_log_cerror( APLOG_MARK, APLOG_TRACE3, status, c, - "h2_session(%ld): process start, async=%d", - session->id, async); + H2_SSSN_MSG(session, "process start, async=%d"), async); } - if (c->cs) { - c->cs->state = CONN_STATE_WRITE_COMPLETION; - } - - while (1) { - trace = APLOGctrace3(c); + while (session->state != H2_SESSION_ST_DONE) { session->have_read = session->have_written = 0; - if (!ap_mpm_query(AP_MPMQ_MPM_STATE, &mpm_state)) { + if (session->local.accepting + && !ap_mpm_query(AP_MPMQ_MPM_STATE, &mpm_state)) { if (mpm_state == AP_MPMQ_STOPPING) { dispatch_event(session, H2_SESSION_EV_MPM_STOPPING, 0, NULL); - break; } } @@ -2076,51 +2008,56 @@ apr_status_t h2_session_process(h2_sessi case H2_SESSION_ST_INIT: ap_update_child_status_from_conn(c->sbh, SERVER_BUSY_READ, c); if (!h2_is_acceptable_connection(c, 1)) { - update_child_status(session, SERVER_BUSY_READ, "inadequate security"); - h2_session_shutdown(session, NGHTTP2_INADEQUATE_SECURITY, NULL, 1); + update_child_status(session, SERVER_BUSY_READ, + "inadequate security"); + h2_session_shutdown(session, + NGHTTP2_INADEQUATE_SECURITY, NULL, 1); } else { update_child_status(session, SERVER_BUSY_READ, "init"); status = h2_session_start(session, &rv); - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, c, APLOGNO(03079) - "h2_session(%ld): started on %s:%d", session->id, + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, c, + H2_SSSN_LOG(APLOGNO(03079), session, + "started on %s:%d"), session->s->server_hostname, c->local_addr->port); if (status != APR_SUCCESS) { - dispatch_event(session, H2_SESSION_EV_CONN_ERROR, 0, NULL); + dispatch_event(session, + H2_SESSION_EV_CONN_ERROR, 0, NULL); } dispatch_event(session, H2_SESSION_EV_INIT, 0, NULL); } break; case H2_SESSION_ST_IDLE: - /* make certain, we send everything before we idle */ + /* We trust our connection into the default timeout/keepalive + * handling of the core filters/mpm iff: + * - keep_sync_until is not set + * - we have an async mpm + * - we have no open streams to process + * - we are not sitting on a Upgrade: request + * - we already have seen at least one request + */ if (!session->keep_sync_until && async && !session->open_streams && !session->r && session->remote.emitted_count) { if (trace) { - ap_log_cerror( APLOG_MARK, APLOG_TRACE3, status, c, - "h2_session(%ld): async idle, nonblock read, " - "%d streams open", session->id, + ap_log_cerror(APLOG_MARK, APLOG_TRACE3, status, c, + H2_SSSN_MSG(session, + "nonblock read, %d streams open"), session->open_streams); } - /* We do not return to the async mpm immediately, since under - * load, mpms show the tendency to throw keep_alive connections - * away very rapidly. - * So, if we are still processing streams, we wait for the - * normal timeout first and, on timeout, close. - * If we have no streams, we still wait a short amount of - * time here for the next frame to arrive, before handing - * it to keep_alive processing of the mpm. - */ + h2_conn_io_flush(&session->io); status = h2_session_read(session, 0); if (status == APR_SUCCESS) { session->have_read = 1; dispatch_event(session, H2_SESSION_EV_DATA_READ, 0, NULL); } - else if (APR_STATUS_IS_EAGAIN(status) || APR_STATUS_IS_TIMEUP(status)) { + else if (APR_STATUS_IS_EAGAIN(status) + || APR_STATUS_IS_TIMEUP(status)) { if (apr_time_now() > session->idle_until) { - dispatch_event(session, H2_SESSION_EV_CONN_TIMEOUT, 0, NULL); + dispatch_event(session, + H2_SESSION_EV_CONN_TIMEOUT, 0, NULL); } else { status = APR_EAGAIN; @@ -2128,25 +2065,31 @@ apr_status_t h2_session_process(h2_sessi } } else { - ap_log_cerror( APLOG_MARK, APLOG_DEBUG, status, c, - APLOGNO(03403) - "h2_session(%ld): idle, no data, error", - session->id); - dispatch_event(session, H2_SESSION_EV_CONN_ERROR, 0, "timeout"); + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, c, + H2_SSSN_LOG(APLOGNO(03403), session, + "no data, error")); + dispatch_event(session, + H2_SESSION_EV_CONN_ERROR, 0, "timeout"); } } else { + /* make certain, we send everything before we idle */ + h2_conn_io_flush(&session->io); if (trace) { - ap_log_cerror( APLOG_MARK, APLOG_TRACE3, status, c, - "h2_session(%ld): sync idle, stutter 1-sec, " - "%d streams open", session->id, + ap_log_cerror(APLOG_MARK, APLOG_TRACE3, status, c, + H2_SSSN_MSG(session, + "sync, stutter 1-sec, %d streams open"), session->open_streams); } /* We wait in smaller increments, using a 1 second timeout. * That gives us the chance to check for MPMQ_STOPPING often. */ status = h2_mplx_idle(session->mplx); - if (status != APR_SUCCESS) { + if (status == APR_EAGAIN) { + dispatch_event(session, H2_SESSION_EV_DATA_READ, 0, NULL); + break; + } + else if (status != APR_SUCCESS) { dispatch_event(session, H2_SESSION_EV_CONN_ERROR, H2_ERR_ENHANCE_YOUR_CALM, "less is more"); } @@ -2168,34 +2111,39 @@ apr_status_t h2_session_process(h2_sessi } if (now > session->idle_until) { if (trace) { - ap_log_cerror( APLOG_MARK, APLOG_TRACE3, status, c, - "h2_session(%ld): keepalive timeout", - session->id); + ap_log_cerror(APLOG_MARK, APLOG_TRACE3, status, c, + H2_SSSN_MSG(session, + "keepalive timeout")); } - dispatch_event(session, H2_SESSION_EV_CONN_TIMEOUT, 0, "timeout"); + dispatch_event(session, + H2_SESSION_EV_CONN_TIMEOUT, 0, "timeout"); } else if (trace) { - ap_log_cerror( APLOG_MARK, APLOG_TRACE3, status, c, - "h2_session(%ld): keepalive, %f sec left", - session->id, (session->idle_until - now) / 1000000.0f); + ap_log_cerror(APLOG_MARK, APLOG_TRACE3, status, c, + H2_SSSN_MSG(session, + "keepalive, %f sec left"), + (session->idle_until - now) / 1000000.0f); } /* continue reading handling */ } + else if (APR_STATUS_IS_ECONNABORTED(status) + || APR_STATUS_IS_ECONNRESET(status) + || APR_STATUS_IS_EOF(status) + || APR_STATUS_IS_EBADF(status)) { + ap_log_cerror( APLOG_MARK, APLOG_TRACE3, status, c, + H2_SSSN_MSG(session, "input gone")); + dispatch_event(session, H2_SESSION_EV_CONN_ERROR, 0, NULL); + } else { - if (trace) { - ap_log_cerror( APLOG_MARK, APLOG_TRACE3, status, c, - "h2_session(%ld): idle(1 sec timeout) " - "read failed", session->id); - } + ap_log_cerror( APLOG_MARK, APLOG_TRACE3, status, c, + H2_SSSN_MSG(session, + "(1 sec timeout) read failed")); dispatch_event(session, H2_SESSION_EV_CONN_ERROR, 0, "error"); } } - break; case H2_SESSION_ST_BUSY: - case H2_SESSION_ST_LOCAL_SHUTDOWN: - case H2_SESSION_ST_REMOTE_SHUTDOWN: if (nghttp2_session_want_read(session->ngh2)) { ap_update_child_status(session->c->sbh, SERVER_BUSY_READ, NULL); h2_filter_cin_timeout_set(session->cin, session->s->timeout); @@ -2215,25 +2163,18 @@ apr_status_t h2_session_process(h2_sessi dispatch_event(session, H2_SESSION_EV_CONN_ERROR, 0, NULL); } } - - /* trigger window updates, stream resumes and submits */ - status = h2_mplx_dispatch_master_events(session->mplx, - on_stream_resume, - on_stream_response, - session); - if (status != APR_SUCCESS) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE3, status, c, - "h2_session(%ld): dispatch error", - session->id); - dispatch_event(session, H2_SESSION_EV_CONN_ERROR, - H2_ERR_INTERNAL_ERROR, - "dispatch error"); + + status = dispatch_master(session); + if (status != APR_SUCCESS && status != APR_EAGAIN) { break; } if (nghttp2_session_want_write(session->ngh2)) { ap_update_child_status(session->c->sbh, SERVER_BUSY_WRITE, NULL); status = h2_session_send(session); + if (status == APR_SUCCESS) { + status = h2_conn_io_flush(&session->io); + } if (status != APR_SUCCESS) { dispatch_event(session, H2_SESSION_EV_CONN_ERROR, H2_ERR_INTERNAL_ERROR, "writing"); @@ -2254,21 +2195,11 @@ apr_status_t h2_session_process(h2_sessi case H2_SESSION_ST_WAIT: if (session->wait_us <= 0) { session->wait_us = 10; - session->start_wait = apr_time_now(); if (h2_conn_io_flush(&session->io) != APR_SUCCESS) { dispatch_event(session, H2_SESSION_EV_CONN_ERROR, 0, NULL); break; } } - else if ((apr_time_now() - session->start_wait) >= session->s->timeout) { - /* waited long enough */ - if (trace) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE3, APR_TIMEUP, c, - "h2_session: wait for data"); - } - dispatch_event(session, H2_SESSION_EV_CONN_TIMEOUT, 0, "timeout"); - break; - } else { /* repeating, increase timer for graceful backoff */ session->wait_us = H2MIN(session->wait_us*2, MAX_WAIT_MICROS); @@ -2287,8 +2218,8 @@ apr_status_t h2_session_process(h2_sessi } else if (APR_STATUS_IS_TIMEUP(status)) { /* go back to checking all inputs again */ - transit(session, "wait cycle", session->local.accepting? - H2_SESSION_ST_BUSY : H2_SESSION_ST_LOCAL_SHUTDOWN); + transit(session, "wait cycle", session->local.shutdown? + H2_SESSION_ST_DONE : H2_SESSION_ST_BUSY); } else if (APR_STATUS_IS_ECONNRESET(status) || APR_STATUS_IS_ECONNABORTED(status)) { @@ -2296,22 +2227,17 @@ apr_status_t h2_session_process(h2_sessi } else { ap_log_cerror(APLOG_MARK, APLOG_WARNING, status, c, - APLOGNO(03404) - "h2_session(%ld): waiting on conditional", - session->id); + H2_SSSN_LOG(APLOGNO(03404), session, + "waiting on conditional")); h2_session_shutdown(session, H2_ERR_INTERNAL_ERROR, "cond wait error", 0); } break; - case H2_SESSION_ST_DONE: - status = APR_EOF; - goto out; - default: ap_log_cerror(APLOG_MARK, APLOG_ERR, APR_EGENERAL, c, - APLOGNO(03080) - "h2_session(%ld): unknown state %d", session->id, session->state); + H2_SSSN_LOG(APLOGNO(03080), session, + "unknown state")); dispatch_event(session, H2_SESSION_EV_PROTO_ERROR, 0, NULL); break; } @@ -2329,32 +2255,34 @@ apr_status_t h2_session_process(h2_sessi out: if (trace) { ap_log_cerror( APLOG_MARK, APLOG_TRACE3, status, c, - "h2_session(%ld): [%s] process returns", - session->id, state_name(session->state)); + H2_SSSN_MSG(session, "process returns")); } if ((session->state != H2_SESSION_ST_DONE) && (APR_STATUS_IS_EOF(status) || APR_STATUS_IS_ECONNRESET(status) || APR_STATUS_IS_ECONNABORTED(status))) { - dispatch_event(session, H2_SESSION_EV_CONN_ERROR, 0, NULL); - } - - status = (session->state == H2_SESSION_ST_DONE)? APR_EOF : APR_SUCCESS; - if (session->state == H2_SESSION_ST_DONE) { - if (!session->eoc_written) { - session->eoc_written = 1; - h2_conn_io_write_eoc(&session->io, session); - } + dispatch_event(session, H2_SESSION_EV_CONN_ERROR, 0, NULL); } - - return status; + + return (session->state == H2_SESSION_ST_DONE)? APR_EOF : APR_SUCCESS; } apr_status_t h2_session_pre_close(h2_session *session, int async) { + apr_status_t status; + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c, - "h2_session(%ld): pre_close", session->id); - dispatch_event(session, H2_SESSION_EV_PRE_CLOSE, 0, "timeout"); - return APR_SUCCESS; + H2_SSSN_MSG(session, "pre_close")); + dispatch_event(session, H2_SESSION_EV_PRE_CLOSE, 0, + (session->state == H2_SESSION_ST_IDLE)? "timeout" : NULL); + status = session_cleanup(session, "pre_close"); + if (status == APR_SUCCESS) { + /* no one should hold a reference to this session any longer and + * the h2_ctx was removed from the connection. + * Take the pool (and thus all subpools etc. down now, instead of + * during cleanup of main connection pool. */ + apr_pool_destroy(session->pool); + } + return status; } diff -up --new-file httpd-2.4.23/modules/http2/h2_session.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_session.h --- httpd-2.4.23/modules/http2/h2_session.h 2016-05-23 12:55:29.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_session.h 2017-04-10 17:04:55.000000000 +0200 @@ -31,7 +31,7 @@ * New incoming HEADER frames are converted into a h2_stream+h2_task instance * that both represent a HTTP/2 stream, but may have separate lifetimes. This * allows h2_task to be scheduled in other threads without semaphores - * all over the place. It allows task memory to be freed independant of + * all over the place. It allows task memory to be freed independent of * session lifetime and sessions may close down while tasks are still running. * * @@ -49,9 +49,9 @@ struct h2_mplx; struct h2_priority; struct h2_push; struct h2_push_diary; -struct h2_response; struct h2_session; struct h2_stream; +struct h2_stream_monitor; struct h2_task; struct h2_workers; @@ -65,13 +65,10 @@ typedef enum { H2_SESSION_EV_PROTO_ERROR, /* protocol error */ H2_SESSION_EV_CONN_TIMEOUT, /* connection timeout */ H2_SESSION_EV_NO_IO, /* nothing has been read or written */ - H2_SESSION_EV_STREAM_READY, /* stream signalled availability of headers/data */ H2_SESSION_EV_DATA_READ, /* connection data has been read */ H2_SESSION_EV_NGH2_DONE, /* nghttp2 wants neither read nor write anything */ H2_SESSION_EV_MPM_STOPPING, /* the process is stopping */ H2_SESSION_EV_PRE_CLOSE, /* connection will close after this */ - H2_SESSION_EV_STREAM_OPEN, /* stream has been opened */ - H2_SESSION_EV_STREAM_DONE, /* stream has been handled completely */ } h2_session_event_t; typedef struct h2_session { @@ -87,7 +84,6 @@ typedef struct h2_session { struct h2_workers *workers; /* for executing stream tasks */ struct h2_filter_cin *cin; /* connection input filter context */ h2_conn_io io; /* io on httpd conn filters */ - struct h2_ihash_t *streams; /* streams handled by this session */ struct nghttp2_session *ngh2; /* the nghttp2 session (internal use) */ h2_session_state state; /* state session is in */ @@ -96,17 +92,17 @@ typedef struct h2_session { h2_session_props remote; /* properites of remote session */ unsigned int reprioritize : 1; /* scheduled streams priority changed */ - unsigned int eoc_written : 1; /* h2 eoc bucket written */ unsigned int flush : 1; /* flushing output necessary */ unsigned int have_read : 1; /* session has read client data */ unsigned int have_written : 1; /* session did write data to client */ - apr_interval_time_t wait_us; /* timout during BUSY_WAIT state, micro secs */ + apr_interval_time_t wait_us; /* timeout during BUSY_WAIT state, micro secs */ struct h2_push_diary *push_diary; /* remember pushes, avoid duplicates */ - int open_streams; /* number of streams open */ + struct h2_stream_monitor *monitor;/* monitor callbacks for streams */ + int open_streams; /* number of client streams open */ int unsent_submits; /* number of submitted, but not yet written responses. */ - int unsent_promises; /* number of submitted, but not yet written push promised */ + int unsent_promises; /* number of submitted, but not yet written push promises */ int responses_submitted; /* number of http/2 responses submitted */ int streams_reset; /* number of http/2 streams reset by client */ @@ -120,7 +116,6 @@ typedef struct h2_session { apr_size_t max_stream_count; /* max number of open streams */ apr_size_t max_stream_mem; /* max buffer memory for a single stream */ - apr_time_t start_wait; /* Time we started waiting for sth. to happen */ apr_time_t idle_until; /* Time we shut down due to sheer boredom */ apr_time_t keep_sync_until; /* Time we sync wait until passing to async mpm */ @@ -130,34 +125,46 @@ typedef struct h2_session { char status[64]; /* status message for scoreboard */ int last_status_code; /* the one already reported */ const char *last_status_msg; /* the one already reported */ + + struct h2_iqueue *in_pending; /* all streams with input pending */ + struct h2_iqueue *in_process; /* all streams ready for processing on slave */ + } h2_session; +const char *h2_session_state_str(h2_session_state state); /** * Create a new h2_session for the given connection. * The session will apply the configured parameter. + * @param psession pointer receiving the created session on success or NULL * @param c the connection to work on * @param cfg the module config to apply * @param workers the worker pool to use * @return the created session */ -h2_session *h2_session_create(conn_rec *c, struct h2_ctx *ctx, - struct h2_workers *workers); +apr_status_t h2_session_create(h2_session **psession, + conn_rec *c, struct h2_ctx *ctx, + struct h2_workers *workers); /** * Create a new h2_session for the given request. * The session will apply the configured parameter. + * @param psession pointer receiving the created session on success or NULL * @param r the request that was upgraded * @param cfg the module config to apply * @param workers the worker pool to use * @return the created session */ -h2_session *h2_session_rcreate(request_rec *r, struct h2_ctx *ctx, - struct h2_workers *workers); +apr_status_t h2_session_rcreate(h2_session **psession, + request_rec *r, struct h2_ctx *ctx, + struct h2_workers *workers); + +void h2_session_event(h2_session *session, h2_session_event_t ev, + int err, const char *msg); /** * Process the given HTTP/2 session until it is ended or a fatal - * error occured. + * error occurred. * * @param session the sessionm to process */ @@ -169,14 +176,7 @@ apr_status_t h2_session_process(h2_sessi apr_status_t h2_session_pre_close(h2_session *session, int async); /** - * Cleanup the session and all objects it still contains. This will not - * destroy h2_task instances that have not finished yet. - * @param session the session to destroy - */ -void h2_session_eoc_callback(h2_session *session); - -/** - * Called when a serious error occured and the session needs to terminate + * Called when a serious error occurred and the session needs to terminate * without further connection io. * @param session the session to abort * @param reason the apache status that caused the abort @@ -188,25 +188,6 @@ void h2_session_abort(h2_session *sessio */ void h2_session_close(h2_session *session); -/* Start submitting the response to a stream request. This is possible - * once we have all the response headers. */ -apr_status_t h2_session_handle_response(h2_session *session, - struct h2_stream *stream); - -/** - * Create and register a new stream under the given id. - * - * @param session the session to register in - * @param stream_id the new stream identifier - * @param initiated_on the stream id this one is initiated on or 0 - * @param req the request for this stream or NULL if not known yet - * @return the new stream - */ -struct h2_stream *h2_session_open_stream(h2_session *session, int stream_id, - int initiated_on, - const h2_request *req); - - /** * Returns if client settings have push enabled. * @param != 0 iff push is enabled in client settings @@ -214,12 +195,9 @@ struct h2_stream *h2_session_open_stream int h2_session_push_enabled(h2_session *session); /** - * Destroy the stream and release it everywhere. Reclaim all resources. - * @param session the session to which the stream belongs - * @param stream the stream to destroy + * Look up the stream in this session with the given id. */ -apr_status_t h2_session_stream_done(h2_session *session, - struct h2_stream *stream); +struct h2_stream *h2_session_stream_get(h2_session *session, int stream_id); /** * Submit a push promise on the stream and schedule the new steam for @@ -237,5 +215,10 @@ apr_status_t h2_session_set_prio(h2_sess struct h2_stream *stream, const struct h2_priority *prio); +#define H2_SSSN_MSG(s, msg) \ + "h2_session(%ld,%s,%d): "msg, s->id, h2_session_state_str(s->state), \ + s->open_streams + +#define H2_SSSN_LOG(aplogno, s, msg) aplogno H2_SSSN_MSG(s, msg) #endif /* defined(__mod_h2__h2_session__) */ diff -up --new-file httpd-2.4.23/modules/http2/h2_stream.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_stream.c --- httpd-2.4.23/modules/http2/h2_stream.c 2017-12-27 23:01:33.408186020 +0100 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_stream.c 2017-09-08 16:36:31.000000000 +0200 @@ -16,6 +16,8 @@ #include <assert.h> #include <stddef.h> +#include <apr_strings.h> + #include <httpd.h> #include <http_core.h> #include <http_connection.h> @@ -29,11 +31,10 @@ #include "h2_conn.h" #include "h2_config.h" #include "h2_h2.h" -#include "h2_filter.h" #include "h2_mplx.h" #include "h2_push.h" #include "h2_request.h" -#include "h2_response.h" +#include "h2_headers.h" #include "h2_session.h" #include "h2_stream.h" #include "h2_task.h" @@ -42,207 +43,546 @@ #include "h2_util.h" -static int state_transition[][7] = { - /* ID OP RL RR CI CO CL */ -/*ID*/{ 1, 0, 0, 0, 0, 0, 0 }, -/*OP*/{ 1, 1, 0, 0, 0, 0, 0 }, -/*RL*/{ 0, 0, 1, 0, 0, 0, 0 }, -/*RR*/{ 0, 0, 0, 1, 0, 0, 0 }, -/*CI*/{ 1, 1, 0, 0, 1, 0, 0 }, -/*CO*/{ 1, 1, 0, 0, 0, 1, 0 }, -/*CL*/{ 1, 1, 0, 0, 1, 1, 1 }, +static const char *h2_ss_str(h2_stream_state_t state) +{ + switch (state) { + case H2_SS_IDLE: + return "IDLE"; + case H2_SS_RSVD_L: + return "RESERVED_LOCAL"; + case H2_SS_RSVD_R: + return "RESERVED_REMOTE"; + case H2_SS_OPEN: + return "OPEN"; + case H2_SS_CLOSED_L: + return "HALF_CLOSED_LOCAL"; + case H2_SS_CLOSED_R: + return "HALF_CLOSED_REMOTE"; + case H2_SS_CLOSED: + return "CLOSED"; + case H2_SS_CLEANUP: + return "CLEANUP"; + default: + return "UNKNOWN"; + } +} + +const char *h2_stream_state_str(h2_stream *stream) +{ + return h2_ss_str(stream->state); +} + +/* Abbreviations for stream transit tables */ +#define S_XXX (-2) /* Programming Error */ +#define S_ERR (-1) /* Protocol Error */ +#define S_NOP (0) /* No Change */ +#define S_IDL (H2_SS_IDL + 1) +#define S_RS_L (H2_SS_RSVD_L + 1) +#define S_RS_R (H2_SS_RSVD_R + 1) +#define S_OPEN (H2_SS_OPEN + 1) +#define S_CL_L (H2_SS_CLOSED_L + 1) +#define S_CL_R (H2_SS_CLOSED_R + 1) +#define S_CLS (H2_SS_CLOSED + 1) +#define S_CLN (H2_SS_CLEANUP + 1) + +/* state transisitions when certain frame types are sent */ +static int trans_on_send[][H2_SS_MAX] = { +/*S_IDLE,S_RS_R, S_RS_L, S_OPEN, S_CL_R, S_CL_L, S_CLS, S_CLN, */ +{ S_ERR, S_ERR, S_ERR, S_NOP, S_NOP, S_ERR, S_NOP, S_NOP, },/* DATA */ +{ S_ERR, S_ERR, S_CL_R, S_NOP, S_NOP, S_ERR, S_NOP, S_NOP, },/* HEADERS */ +{ S_NOP, S_NOP, S_NOP, S_NOP, S_NOP, S_NOP, S_NOP, S_NOP, },/* PRIORITY */ +{ S_CLS, S_CLS, S_CLS, S_CLS, S_CLS, S_CLS, S_NOP, S_NOP, },/* RST_STREAM */ +{ S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, },/* SETTINGS */ +{ S_RS_L,S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, },/* PUSH_PROMISE */ +{ S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, },/* PING */ +{ S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, },/* GOAWAY */ +{ S_NOP, S_NOP, S_NOP, S_NOP, S_NOP, S_NOP, S_NOP, S_NOP, },/* WINDOW_UPDATE */ +{ S_NOP, S_NOP, S_NOP, S_NOP, S_NOP, S_NOP, S_NOP, S_NOP, },/* CONT */ +}; +/* state transisitions when certain frame types are received */ +static int trans_on_recv[][H2_SS_MAX] = { +/*S_IDLE,S_RS_R, S_RS_L, S_OPEN, S_CL_R, S_CL_L, S_CLS, S_CLN, */ +{ S_ERR, S_ERR, S_ERR, S_NOP, S_ERR, S_NOP, S_NOP, S_NOP, },/* DATA */ +{ S_OPEN,S_CL_L, S_ERR, S_NOP, S_ERR, S_NOP, S_NOP, S_NOP, },/* HEADERS */ +{ S_NOP, S_NOP, S_NOP, S_NOP, S_NOP, S_NOP, S_NOP, S_NOP, },/* PRIORITY */ +{ S_ERR, S_CLS, S_CLS, S_CLS, S_CLS, S_CLS, S_NOP, S_NOP, },/* RST_STREAM */ +{ S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, },/* SETTINGS */ +{ S_RS_R,S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, },/* PUSH_PROMISE */ +{ S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, },/* PING */ +{ S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, S_ERR, },/* GOAWAY */ +{ S_NOP, S_NOP, S_NOP, S_NOP, S_NOP, S_NOP, S_NOP, S_NOP, },/* WINDOW_UPDATE */ +{ S_NOP, S_NOP, S_NOP, S_NOP, S_NOP, S_NOP, S_NOP, S_NOP, },/* CONT */ +}; +/* state transisitions when certain events happen */ +static int trans_on_event[][H2_SS_MAX] = { +/*S_IDLE,S_RS_R, S_RS_L, S_OPEN, S_CL_R, S_CL_L, S_CLS, S_CLN, */ +{ S_XXX, S_ERR, S_ERR, S_CL_L, S_CLS, S_XXX, S_XXX, S_XXX, },/* EV_CLOSED_L*/ +{ S_ERR, S_ERR, S_ERR, S_CL_R, S_ERR, S_CLS, S_NOP, S_NOP, },/* EV_CLOSED_R*/ +{ S_CLS, S_CLS, S_CLS, S_CLS, S_CLS, S_CLS, S_NOP, S_NOP, },/* EV_CANCELLED*/ +{ S_NOP, S_XXX, S_XXX, S_XXX, S_XXX, S_CLS, S_CLN, S_XXX, },/* EV_EOS_SENT*/ }; -static void H2_STREAM_OUT_LOG(int lvl, h2_stream *s, char *tag) +static int on_map(h2_stream_state_t state, int map[H2_SS_MAX]) +{ + int op = map[state]; + switch (op) { + case S_XXX: + case S_ERR: + return op; + case S_NOP: + return state; + default: + return op-1; + } +} + +static int on_frame(h2_stream_state_t state, int frame_type, + int frame_map[][H2_SS_MAX], apr_size_t maxlen) +{ + ap_assert(frame_type >= 0); + ap_assert(state >= 0); + if (frame_type >= maxlen) { + return state; /* NOP, ignore unknown frame types */ + } + return on_map(state, frame_map[frame_type]); +} + +static int on_frame_send(h2_stream_state_t state, int frame_type) +{ + return on_frame(state, frame_type, trans_on_send, H2_ALEN(trans_on_send)); +} + +static int on_frame_recv(h2_stream_state_t state, int frame_type) +{ + return on_frame(state, frame_type, trans_on_recv, H2_ALEN(trans_on_recv)); +} + +static int on_event(h2_stream* stream, h2_stream_event_t ev) +{ + if (stream->monitor && stream->monitor->on_event) { + stream->monitor->on_event(stream->monitor->ctx, stream, ev); + } + if (ev < H2_ALEN(trans_on_event)) { + return on_map(stream->state, trans_on_event[ev]); + } + return stream->state; +} + +static void H2_STREAM_OUT_LOG(int lvl, h2_stream *s, const char *tag) { if (APLOG_C_IS_LEVEL(s->session->c, lvl)) { conn_rec *c = s->session->c; char buffer[4 * 1024]; - const char *line = "(null)"; apr_size_t len, bmax = sizeof(buffer)/sizeof(buffer[0]); - len = h2_util_bb_print(buffer, bmax, tag, "", s->buffer); - ap_log_cerror(APLOG_MARK, lvl, 0, c, "bb_dump(%ld-%d): %s", - c->id, s->id, len? buffer : line); + len = h2_util_bb_print(buffer, bmax, tag, "", s->out_buffer); + ap_log_cerror(APLOG_MARK, lvl, 0, c, + H2_STRM_MSG(s, "out-buffer(%s)"), len? buffer : "empty"); + } +} + +static apr_status_t setup_input(h2_stream *stream) { + if (stream->input == NULL) { + int empty = (stream->input_eof + && (!stream->in_buffer + || APR_BRIGADE_EMPTY(stream->in_buffer))); + if (!empty) { + h2_beam_create(&stream->input, stream->pool, stream->id, + "input", H2_BEAM_OWNER_SEND, 0, + stream->session->s->timeout); + h2_beam_send_from(stream->input, stream->pool); + } } + return APR_SUCCESS; } -static int set_state(h2_stream *stream, h2_stream_state_t state) +static apr_status_t close_input(h2_stream *stream) { - int allowed = state_transition[state][stream->state]; - if (allowed) { - stream->state = state; - return 1; + conn_rec *c = stream->session->c; + apr_status_t status = APR_SUCCESS; + + stream->input_eof = 1; + if (stream->input && h2_beam_is_closed(stream->input)) { + return APR_SUCCESS; } - ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, stream->session->c, APLOGNO(03081) - "h2_stream(%ld-%d): invalid state transition from %d to %d", - stream->session->id, stream->id, stream->state, state); - return 0; + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, stream->session->c, + H2_STRM_MSG(stream, "closing input")); + if (stream->rst_error) { + return APR_ECONNRESET; + } + + if (stream->trailers && !apr_is_empty_table(stream->trailers)) { + apr_bucket *b; + h2_headers *r; + + if (!stream->in_buffer) { + stream->in_buffer = apr_brigade_create(stream->pool, c->bucket_alloc); + } + + r = h2_headers_create(HTTP_OK, stream->trailers, NULL, stream->pool); + stream->trailers = NULL; + b = h2_bucket_headers_create(c->bucket_alloc, r); + APR_BRIGADE_INSERT_TAIL(stream->in_buffer, b); + + b = apr_bucket_eos_create(c->bucket_alloc); + APR_BRIGADE_INSERT_TAIL(stream->in_buffer, b); + + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, stream->session->c, + H2_STRM_MSG(stream, "added trailers")); + h2_stream_dispatch(stream, H2_SEV_IN_DATA_PENDING); + } + if (stream->input) { + h2_stream_flush_input(stream); + return h2_beam_close(stream->input); + } + return status; } -static int close_input(h2_stream *stream) +static apr_status_t close_output(h2_stream *stream) { - switch (stream->state) { - case H2_STREAM_ST_CLOSED_INPUT: - case H2_STREAM_ST_CLOSED: - return 0; /* ignore, idempotent */ - case H2_STREAM_ST_CLOSED_OUTPUT: - /* both closed now */ - set_state(stream, H2_STREAM_ST_CLOSED); - break; - default: - /* everything else we jump to here */ - set_state(stream, H2_STREAM_ST_CLOSED_INPUT); - break; + if (!stream->output || h2_beam_is_closed(stream->output)) { + return APR_SUCCESS; } - return 1; + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, stream->session->c, + H2_STRM_MSG(stream, "closing output")); + return h2_beam_leave(stream->output); } -static int input_closed(h2_stream *stream) +static void on_state_enter(h2_stream *stream) { - switch (stream->state) { - case H2_STREAM_ST_OPEN: - case H2_STREAM_ST_CLOSED_OUTPUT: - return 0; - default: - return 1; + if (stream->monitor && stream->monitor->on_state_enter) { + stream->monitor->on_state_enter(stream->monitor->ctx, stream); + } +} + +static void on_state_event(h2_stream *stream, h2_stream_event_t ev) +{ + if (stream->monitor && stream->monitor->on_state_event) { + stream->monitor->on_state_event(stream->monitor->ctx, stream, ev); } } -static int close_output(h2_stream *stream) +static void on_state_invalid(h2_stream *stream) { + if (stream->monitor && stream->monitor->on_state_invalid) { + stream->monitor->on_state_invalid(stream->monitor->ctx, stream); + } + /* stream got an event/frame invalid in its state */ + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, stream->session->c, + H2_STRM_MSG(stream, "invalid state event")); switch (stream->state) { - case H2_STREAM_ST_CLOSED_OUTPUT: - case H2_STREAM_ST_CLOSED: - return 0; /* ignore, idempotent */ - case H2_STREAM_ST_CLOSED_INPUT: - /* both closed now */ - set_state(stream, H2_STREAM_ST_CLOSED); + case H2_SS_OPEN: + case H2_SS_RSVD_L: + case H2_SS_RSVD_R: + case H2_SS_CLOSED_L: + case H2_SS_CLOSED_R: + h2_stream_rst(stream, H2_ERR_INTERNAL_ERROR); break; default: - /* everything else we jump to here */ - set_state(stream, H2_STREAM_ST_CLOSED_OUTPUT); break; } - return 1; } -static int input_open(const h2_stream *stream) +static apr_status_t transit(h2_stream *stream, int new_state) { - switch (stream->state) { - case H2_STREAM_ST_OPEN: - case H2_STREAM_ST_CLOSED_OUTPUT: - return 1; + if (new_state == stream->state) { + return APR_SUCCESS; + } + else if (new_state < 0) { + ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, stream->session->c, + H2_STRM_LOG(APLOGNO(03081), stream, "invalid transition")); + on_state_invalid(stream); + return APR_EINVAL; + } + + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, stream->session->c, + H2_STRM_MSG(stream, "transit to [%s]"), h2_ss_str(new_state)); + stream->state = new_state; + switch (new_state) { + case H2_SS_IDLE: + break; + case H2_SS_RSVD_L: + close_input(stream); + break; + case H2_SS_RSVD_R: + break; + case H2_SS_OPEN: + break; + case H2_SS_CLOSED_L: + close_output(stream); + break; + case H2_SS_CLOSED_R: + close_input(stream); + break; + case H2_SS_CLOSED: + close_input(stream); + close_output(stream); + if (stream->out_buffer) { + apr_brigade_cleanup(stream->out_buffer); + } + break; + case H2_SS_CLEANUP: + break; + } + on_state_enter(stream); + return APR_SUCCESS; +} + +void h2_stream_set_monitor(h2_stream *stream, h2_stream_monitor *monitor) +{ + stream->monitor = monitor; +} + +void h2_stream_dispatch(h2_stream *stream, h2_stream_event_t ev) +{ + int new_state; + + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, stream->session->c, + H2_STRM_MSG(stream, "dispatch event %d"), ev); + new_state = on_event(stream, ev); + if (new_state < 0) { + ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, stream->session->c, + H2_STRM_LOG(APLOGNO(10002), stream, "invalid event %d"), ev); + on_state_invalid(stream); + AP_DEBUG_ASSERT(new_state > S_XXX); + return; + } + else if (new_state == stream->state) { + /* nop */ + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, stream->session->c, + H2_STRM_MSG(stream, "non-state event %d"), ev); + return; + } + else { + on_state_event(stream, ev); + transit(stream, new_state); + } +} + +static void set_policy_for(h2_stream *stream, h2_request *r) +{ + int enabled = h2_session_push_enabled(stream->session); + stream->push_policy = h2_push_policy_determine(r->headers, stream->pool, + enabled); + r->serialize = h2_config_geti(stream->session->config, H2_CONF_SER_HEADERS); +} + +apr_status_t h2_stream_send_frame(h2_stream *stream, int ftype, int flags) +{ + apr_status_t status = APR_SUCCESS; + int new_state, eos = 0; + + new_state = on_frame_send(stream->state, ftype); + if (new_state < 0) { + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, stream->session->c, + H2_STRM_MSG(stream, "invalid frame %d send"), ftype); + AP_DEBUG_ASSERT(new_state > S_XXX); + return transit(stream, new_state); + } + + switch (ftype) { + case NGHTTP2_DATA: + eos = (flags & NGHTTP2_FLAG_END_STREAM); + break; + + case NGHTTP2_HEADERS: + eos = (flags & NGHTTP2_FLAG_END_STREAM); + break; + + case NGHTTP2_PUSH_PROMISE: + /* start pushed stream */ + ap_assert(stream->request == NULL); + ap_assert(stream->rtmp != NULL); + status = h2_request_end_headers(stream->rtmp, stream->pool, 1); + if (status != APR_SUCCESS) { + return status; + } + set_policy_for(stream, stream->rtmp); + stream->request = stream->rtmp; + stream->rtmp = NULL; + break; + default: - return 0; + break; + } + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, stream->session->c, + H2_STRM_MSG(stream, "send frame %d, eos=%d"), ftype, eos); + status = transit(stream, new_state); + if (status == APR_SUCCESS && eos) { + status = transit(stream, on_event(stream, H2_SEV_CLOSED_L)); } + return status; } -static int output_open(h2_stream *stream) +apr_status_t h2_stream_recv_frame(h2_stream *stream, int ftype, int flags) { - switch (stream->state) { - case H2_STREAM_ST_OPEN: - case H2_STREAM_ST_CLOSED_INPUT: - return 1; + apr_status_t status = APR_SUCCESS; + int new_state, eos = 0; + + new_state = on_frame_recv(stream->state, ftype); + if (new_state < 0) { + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, stream->session->c, + H2_STRM_MSG(stream, "invalid frame %d recv"), ftype); + AP_DEBUG_ASSERT(new_state > S_XXX); + return transit(stream, new_state); + } + + switch (ftype) { + case NGHTTP2_DATA: + eos = (flags & NGHTTP2_FLAG_END_STREAM); + break; + + case NGHTTP2_HEADERS: + eos = (flags & NGHTTP2_FLAG_END_STREAM); + if (stream->state == H2_SS_OPEN) { + /* trailer HEADER */ + if (!eos) { + h2_stream_rst(stream, H2_ERR_PROTOCOL_ERROR); + } + } + else { + /* request HEADER */ + ap_assert(stream->request == NULL); + if (stream->rtmp == NULL) { + /* This can only happen, if the stream has received no header + * name/value pairs at all. The lastest nghttp2 version have become + * pretty good at detecting this early. In any case, we have + * to abort the connection here, since this is clearly a protocol error */ + return APR_EINVAL; + } + status = h2_request_end_headers(stream->rtmp, stream->pool, eos); + if (status != APR_SUCCESS) { + return status; + } + set_policy_for(stream, stream->rtmp); + stream->request = stream->rtmp; + stream->rtmp = NULL; + } + break; + default: - return 0; + break; + } + status = transit(stream, new_state); + if (status == APR_SUCCESS && eos) { + status = transit(stream, on_event(stream, H2_SEV_CLOSED_R)); } + return status; } -static apr_status_t stream_pool_cleanup(void *ctx) +apr_status_t h2_stream_flush_input(h2_stream *stream) { - h2_stream *stream = ctx; - apr_status_t status; + apr_status_t status = APR_SUCCESS; - if (stream->input) { - h2_beam_destroy(stream->input); - stream->input = NULL; + if (stream->in_buffer && !APR_BRIGADE_EMPTY(stream->in_buffer)) { + setup_input(stream); + status = h2_beam_send(stream->input, stream->in_buffer, APR_BLOCK_READ); + stream->in_last_write = apr_time_now(); } - if (stream->files) { - apr_file_t *file; - int i; - for (i = 0; i < stream->files->nelts; ++i) { - file = APR_ARRAY_IDX(stream->files, i, apr_file_t*); - status = apr_file_close(file); - ap_log_cerror(APLOG_MARK, APLOG_TRACE3, status, stream->session->c, - "h2_stream(%ld-%d): destroy, closed file %d", - stream->session->id, stream->id, i); - } - stream->files = NULL; + if (stream->input_eof + && stream->input && !h2_beam_is_closed(stream->input)) { + status = h2_beam_close(stream->input); } - return APR_SUCCESS; + return status; } -h2_stream *h2_stream_open(int id, apr_pool_t *pool, h2_session *session, - int initiated_on, const h2_request *creq) +apr_status_t h2_stream_recv_DATA(h2_stream *stream, uint8_t flags, + const uint8_t *data, size_t len) { - h2_request *req; - h2_stream *stream = apr_pcalloc(pool, sizeof(h2_stream)); + h2_session *session = stream->session; + apr_status_t status = APR_SUCCESS; - stream->id = id; - stream->state = H2_STREAM_ST_IDLE; - stream->pool = pool; - stream->session = session; - set_state(stream, H2_STREAM_ST_OPEN); - - if (creq) { - /* take it into out pool and assure correct id's */ - req = h2_request_clone(pool, creq); - req->id = id; - req->initiated_on = initiated_on; + stream->in_data_frames++; + if (len > 0) { + if (APLOGctrace3(session->c)) { + const char *load = apr_pstrndup(stream->pool, (const char *)data, len); + ap_log_cerror(APLOG_MARK, APLOG_TRACE3, 0, session->c, + H2_STRM_MSG(stream, "recv DATA, len=%d: -->%s<--"), + (int)len, load); + } + else { + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, status, session->c, + H2_STRM_MSG(stream, "recv DATA, len=%d"), (int)len); + } + stream->in_data_octets += len; + if (!stream->in_buffer) { + stream->in_buffer = apr_brigade_create(stream->pool, + session->c->bucket_alloc); + } + apr_brigade_write(stream->in_buffer, NULL, NULL, (const char *)data, len); + h2_stream_dispatch(stream, H2_SEV_IN_DATA_PENDING); } - else { - req = h2_req_create(id, pool, - h2_config_geti(session->config, H2_CONF_SER_HEADERS)); + return status; +} + +static void prep_output(h2_stream *stream) { + conn_rec *c = stream->session->c; + if (!stream->out_buffer) { + stream->out_buffer = apr_brigade_create(stream->pool, c->bucket_alloc); } - stream->request = req; +} + +h2_stream *h2_stream_create(int id, apr_pool_t *pool, h2_session *session, + h2_stream_monitor *monitor, int initiated_on) +{ + h2_stream *stream = apr_pcalloc(pool, sizeof(h2_stream)); - apr_pool_cleanup_register(pool, stream, stream_pool_cleanup, - apr_pool_cleanup_null); - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, APLOGNO(03082) - "h2_stream(%ld-%d): opened", session->id, stream->id); + stream->id = id; + stream->initiated_on = initiated_on; + stream->created = apr_time_now(); + stream->state = H2_SS_IDLE; + stream->pool = pool; + stream->session = session; + stream->monitor = monitor; + stream->max_mem = session->max_stream_mem; + +#ifdef H2_NG2_LOCAL_WIN_SIZE + stream->in_window_size = + nghttp2_session_get_stream_local_window_size( + stream->session->ngh2, stream->id); +#endif + + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c, + H2_STRM_LOG(APLOGNO(03082), stream, "created")); + on_state_enter(stream); return stream; } void h2_stream_cleanup(h2_stream *stream) { - AP_DEBUG_ASSERT(stream); - if (stream->buffer) { - apr_brigade_cleanup(stream->buffer); + apr_status_t status; + + ap_assert(stream); + if (stream->out_buffer) { + /* remove any left over output buckets that may still have + * references into request pools */ + apr_brigade_cleanup(stream->out_buffer); } if (stream->input) { - apr_status_t status; - status = h2_beam_shutdown(stream->input, APR_NONBLOCK_READ, 1); + h2_beam_abort(stream->input); + status = h2_beam_wait_empty(stream->input, APR_NONBLOCK_READ); if (status == APR_EAGAIN) { ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, stream->session->c, - "h2_stream(%ld-%d): wait on input shutdown", - stream->session->id, stream->id); - status = h2_beam_shutdown(stream->input, APR_BLOCK_READ, 1); + H2_STRM_MSG(stream, "wait on input drain")); + status = h2_beam_wait_empty(stream->input, APR_BLOCK_READ); ap_log_cerror(APLOG_MARK, APLOG_TRACE2, status, stream->session->c, - "h2_stream(%ld-%d): input shutdown returned", - stream->session->id, stream->id); + H2_STRM_MSG(stream, "input drain returned")); } } } void h2_stream_destroy(h2_stream *stream) { - AP_DEBUG_ASSERT(stream); + ap_assert(stream); ap_log_cerror(APLOG_MARK, APLOG_TRACE3, 0, stream->session->c, - "h2_stream(%ld-%d): destroy", - stream->session->id, stream->id); + H2_STRM_MSG(stream, "destroy")); if (stream->pool) { apr_pool_destroy(stream->pool); + stream->pool = NULL; } } -void h2_stream_eos_destroy(h2_stream *stream) -{ - h2_session_stream_done(stream->session, stream); - /* stream possibly destroyed */ -} - apr_pool_t *h2_stream_detach_pool(h2_stream *stream) { apr_pool_t *pool = stream->pool; @@ -250,374 +590,352 @@ apr_pool_t *h2_stream_detach_pool(h2_str return pool; } -void h2_stream_rst(h2_stream *stream, int error_code) +apr_status_t h2_stream_prep_processing(h2_stream *stream) { - stream->rst_error = error_code; - close_input(stream); - close_output(stream); - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, stream->session->c, - "h2_stream(%ld-%d): reset, error=%d", - stream->session->id, stream->id, error_code); + if (stream->request) { + const h2_request *r = stream->request; + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, stream->session->c, + H2_STRM_MSG(stream, "schedule %s %s://%s%s chunked=%d"), + r->method, r->scheme, r->authority, r->path, r->chunked); + setup_input(stream); + stream->scheduled = 1; + return APR_SUCCESS; + } + return APR_EINVAL; } -struct h2_response *h2_stream_get_response(h2_stream *stream) +void h2_stream_rst(h2_stream *stream, int error_code) { - return stream->response; + stream->rst_error = error_code; + if (stream->input) { + h2_beam_abort(stream->input); + } + if (stream->output) { + h2_beam_leave(stream->output); + } + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, stream->session->c, + H2_STRM_MSG(stream, "reset, error=%d"), error_code); + h2_stream_dispatch(stream, H2_SEV_CANCELLED); } -apr_status_t h2_stream_set_request(h2_stream *stream, request_rec *r) +apr_status_t h2_stream_set_request_rec(h2_stream *stream, + request_rec *r, int eos) { + h2_request *req; apr_status_t status; - AP_DEBUG_ASSERT(stream); + + ap_assert(stream->request == NULL); + ap_assert(stream->rtmp == NULL); if (stream->rst_error) { return APR_ECONNRESET; } - set_state(stream, H2_STREAM_ST_OPEN); - status = h2_request_rwrite(stream->request, stream->pool, r); - stream->request->serialize = h2_config_geti(h2_config_rget(r), - H2_CONF_SER_HEADERS); - ap_log_rerror(APLOG_MARK, APLOG_DEBUG, status, r, APLOGNO(03058) - "h2_request(%d): rwrite %s host=%s://%s%s", - stream->request->id, stream->request->method, - stream->request->scheme, stream->request->authority, - stream->request->path); - + status = h2_request_rcreate(&req, stream->pool, r); + if (status == APR_SUCCESS) { + ap_log_rerror(APLOG_MARK, APLOG_DEBUG, status, r, + H2_STRM_LOG(APLOGNO(03058), stream, + "set_request_rec %s host=%s://%s%s"), + req->method, req->scheme, req->authority, req->path); + stream->rtmp = req; + /* simulate the frames that led to this */ + return h2_stream_recv_frame(stream, NGHTTP2_HEADERS, + NGHTTP2_FLAG_END_STREAM); + } return status; } +void h2_stream_set_request(h2_stream *stream, const h2_request *r) +{ + ap_assert(stream->request == NULL); + ap_assert(stream->rtmp == NULL); + stream->rtmp = h2_request_clone(stream->pool, r); +} + +static void set_error_response(h2_stream *stream, int http_status) +{ + if (!h2_stream_is_ready(stream)) { + conn_rec *c = stream->session->c; + apr_bucket *b; + h2_headers *response; + + response = h2_headers_die(http_status, stream->request, stream->pool); + prep_output(stream); + b = apr_bucket_eos_create(c->bucket_alloc); + APR_BRIGADE_INSERT_HEAD(stream->out_buffer, b); + b = h2_bucket_headers_create(c->bucket_alloc, response); + APR_BRIGADE_INSERT_HEAD(stream->out_buffer, b); + } +} + +static apr_status_t add_trailer(h2_stream *stream, + const char *name, size_t nlen, + const char *value, size_t vlen) +{ + conn_rec *c = stream->session->c; + char *hname, *hvalue; + + if (nlen == 0 || name[0] == ':') { + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, APR_EINVAL, c, + H2_STRM_LOG(APLOGNO(03060), stream, + "pseudo header in trailer")); + return APR_EINVAL; + } + if (h2_req_ignore_trailer(name, nlen)) { + return APR_SUCCESS; + } + if (!stream->trailers) { + stream->trailers = apr_table_make(stream->pool, 5); + } + hname = apr_pstrndup(stream->pool, name, nlen); + hvalue = apr_pstrndup(stream->pool, value, vlen); + h2_util_camel_case_header(hname, nlen); + apr_table_mergen(stream->trailers, hname, hvalue); + + return APR_SUCCESS; +} + apr_status_t h2_stream_add_header(h2_stream *stream, const char *name, size_t nlen, const char *value, size_t vlen) { + h2_session *session = stream->session; int error = 0; - AP_DEBUG_ASSERT(stream); - if (stream->response) { + apr_status_t status; + + if (stream->has_response) { return APR_EINVAL; } ++stream->request_headers_added; if (name[0] == ':') { - if ((vlen) > stream->session->s->limit_req_line) { + if ((vlen) > session->s->limit_req_line) { /* pseudo header: approximation of request line size check */ - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, stream->session->c, - "h2_stream(%ld-%d): pseudo header %s too long", - stream->session->id, stream->id, name); + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c, + H2_STRM_MSG(stream, "pseudo %s too long"), name); error = HTTP_REQUEST_URI_TOO_LARGE; } } - else if ((nlen + 2 + vlen) > stream->session->s->limit_req_fieldsize) { + else if ((nlen + 2 + vlen) > session->s->limit_req_fieldsize) { /* header too long */ - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, stream->session->c, - "h2_stream(%ld-%d): header %s too long", - stream->session->id, stream->id, name); + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c, + H2_STRM_MSG(stream, "header %s too long"), name); error = HTTP_REQUEST_HEADER_FIELDS_TOO_LARGE; } - if (stream->request_headers_added - > stream->session->s->limit_req_fields + 4) { + if (stream->request_headers_added > session->s->limit_req_fields + 4) { /* too many header lines, include 4 pseudo headers */ if (stream->request_headers_added - > stream->session->s->limit_req_fields + 4 + 100) { + > session->s->limit_req_fields + 4 + 100) { /* yeah, right */ + h2_stream_rst(stream, H2_ERR_ENHANCE_YOUR_CALM); return APR_ECONNRESET; } - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, stream->session->c, - "h2_stream(%ld-%d): too many header lines", - stream->session->id, stream->id); + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c, + H2_STRM_MSG(stream, "too many header lines")); error = HTTP_REQUEST_HEADER_FIELDS_TOO_LARGE; } - if (h2_stream_is_scheduled(stream)) { - return h2_request_add_trailer(stream->request, stream->pool, - name, nlen, value, vlen); - } - else if (error) { - return h2_stream_set_error(stream, error); - } - else { - if (!input_open(stream)) { - return APR_ECONNRESET; + if (error) { + set_error_response(stream, error); + return APR_EINVAL; + } + else if (H2_SS_IDLE == stream->state) { + if (!stream->rtmp) { + stream->rtmp = h2_req_create(stream->id, stream->pool, + NULL, NULL, NULL, NULL, NULL, 0); } - return h2_request_add_header(stream->request, stream->pool, - name, nlen, value, vlen); - } -} - -apr_status_t h2_stream_schedule(h2_stream *stream, int eos, int push_enabled, - h2_stream_pri_cmp *cmp, void *ctx) -{ - apr_status_t status; - AP_DEBUG_ASSERT(stream); - AP_DEBUG_ASSERT(stream->session); - AP_DEBUG_ASSERT(stream->session->mplx); - - if (!output_open(stream)) { - return APR_ECONNRESET; - } - if (stream->scheduled) { - return APR_EINVAL; - } - if (eos) { - close_input(stream); + status = h2_request_add_header(stream->rtmp, stream->pool, + name, nlen, value, vlen); } - - if (stream->response) { - /* already have a resonse, probably a HTTP error code */ - return h2_mplx_process(stream->session->mplx, stream, cmp, ctx); - } - - /* Seeing the end-of-headers, we have everything we need to - * start processing it. - */ - status = h2_request_end_headers(stream->request, stream->pool, - eos, push_enabled); - if (status == APR_SUCCESS) { - stream->request->body = !eos; - stream->scheduled = 1; - stream->input_remaining = stream->request->content_length; - - status = h2_mplx_process(stream->session->mplx, stream, cmp, ctx); - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, stream->session->c, - "h2_stream(%ld-%d): scheduled %s %s://%s%s", - stream->session->id, stream->id, - stream->request->method, stream->request->scheme, - stream->request->authority, stream->request->path); + else if (H2_SS_OPEN == stream->state) { + status = add_trailer(stream, name, nlen, value, vlen); } else { - h2_stream_rst(stream, H2_ERR_INTERNAL_ERROR); - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, stream->session->c, - "h2_stream(%ld-%d): RST=2 (internal err) %s %s://%s%s", - stream->session->id, stream->id, - stream->request->method, stream->request->scheme, - stream->request->authority, stream->request->path); - } - - return status; -} - -int h2_stream_is_scheduled(const h2_stream *stream) -{ - return stream->scheduled; -} - -apr_status_t h2_stream_close_input(h2_stream *stream) -{ - apr_status_t status = APR_SUCCESS; - - AP_DEBUG_ASSERT(stream); - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, stream->session->c, - "h2_stream(%ld-%d): closing input", - stream->session->id, stream->id); - - if (stream->rst_error) { - return APR_ECONNRESET; + status = APR_EINVAL; } - if (close_input(stream) && stream->input) { - status = h2_beam_close(stream->input); + if (status != APR_SUCCESS) { + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c, + H2_STRM_MSG(stream, "header %s not accepted"), name); + h2_stream_dispatch(stream, H2_SEV_CANCELLED); } return status; } -apr_status_t h2_stream_write_data(h2_stream *stream, - const char *data, size_t len, int eos) +static apr_bucket *get_first_headers_bucket(apr_bucket_brigade *bb) { - conn_rec *c = stream->session->c; - apr_status_t status = APR_SUCCESS; - - AP_DEBUG_ASSERT(stream); - if (!stream->input) { - return APR_EOF; - } - if (input_closed(stream) || !stream->request->eoh) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, - "h2_stream(%ld-%d): writing denied, closed=%d, eoh=%d", - stream->session->id, stream->id, input_closed(stream), - stream->request->eoh); - return APR_EINVAL; - } - - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, - "h2_stream(%ld-%d): add %ld input bytes", - stream->session->id, stream->id, (long)len); - - if (!stream->request->chunked) { - stream->input_remaining -= len; - if (stream->input_remaining < 0) { - ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, c, - APLOGNO(02961) - "h2_stream(%ld-%d): got %ld more content bytes than announced " - "in content-length header: %ld", - stream->session->id, stream->id, - (long)stream->request->content_length, - -(long)stream->input_remaining); - h2_stream_rst(stream, H2_ERR_PROTOCOL_ERROR); - return APR_ECONNABORTED; + if (bb) { + apr_bucket *b = APR_BRIGADE_FIRST(bb); + while (b != APR_BRIGADE_SENTINEL(bb)) { + if (H2_BUCKET_IS_HEADERS(b)) { + return b; + } + b = APR_BUCKET_NEXT(b); } } - - if (!stream->tmp) { - stream->tmp = apr_brigade_create(stream->pool, c->bucket_alloc); - } - apr_brigade_write(stream->tmp, NULL, NULL, data, len); - if (eos) { - APR_BRIGADE_INSERT_TAIL(stream->tmp, - apr_bucket_eos_create(c->bucket_alloc)); - close_input(stream); - } - - status = h2_beam_send(stream->input, stream->tmp, APR_BLOCK_READ); - apr_brigade_cleanup(stream->tmp); - return status; -} - -void h2_stream_set_suspended(h2_stream *stream, int suspended) -{ - AP_DEBUG_ASSERT(stream); - stream->suspended = !!suspended; - ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, stream->session->c, - "h2_stream(%ld-%d): suspended=%d", - stream->session->id, stream->id, stream->suspended); -} - -int h2_stream_is_suspended(const h2_stream *stream) -{ - AP_DEBUG_ASSERT(stream); - return stream->suspended; + return NULL; } -static apr_status_t fill_buffer(h2_stream *stream, apr_size_t amount) -{ - conn_rec *c = stream->session->c; - apr_bucket *b; - apr_status_t status; - - if (!stream->output) { - return APR_EOF; - } - status = h2_beam_receive(stream->output, stream->buffer, - APR_NONBLOCK_READ, amount); - /* The buckets we reveive are using the stream->buffer pool as - * lifetime which is exactly what we want since this is stream->pool. - * - * However: when we send these buckets down the core output filters, the - * filter might decide to setaside them into a pool of its own. And it - * might decide, after having sent the buckets, to clear its pool. - * - * This is problematic for file buckets because it then closed the contained - * file. Any split off buckets we sent afterwards will result in a - * APR_EBADF. - */ - for (b = APR_BRIGADE_FIRST(stream->buffer); - b != APR_BRIGADE_SENTINEL(stream->buffer); - b = APR_BUCKET_NEXT(b)) { - if (APR_BUCKET_IS_FILE(b)) { - apr_bucket_file *f = (apr_bucket_file *)b->data; - apr_pool_t *fpool = apr_file_pool_get(f->fd); - if (fpool != c->pool) { - apr_bucket_setaside(b, c->pool); - if (!stream->files) { - stream->files = apr_array_make(stream->pool, - 5, sizeof(apr_file_t*)); +static apr_status_t add_buffered_data(h2_stream *stream, apr_off_t requested, + apr_off_t *plen, int *peos, int *is_all, + h2_headers **pheaders) +{ + apr_bucket *b, *e; + + *peos = 0; + *plen = 0; + *is_all = 0; + if (pheaders) { + *pheaders = NULL; + } + + H2_STREAM_OUT_LOG(APLOG_TRACE2, stream, "add_buffered_data"); + b = APR_BRIGADE_FIRST(stream->out_buffer); + while (b != APR_BRIGADE_SENTINEL(stream->out_buffer)) { + e = APR_BUCKET_NEXT(b); + if (APR_BUCKET_IS_METADATA(b)) { + if (APR_BUCKET_IS_FLUSH(b)) { + APR_BUCKET_REMOVE(b); + apr_bucket_destroy(b); + } + else if (APR_BUCKET_IS_EOS(b)) { + *peos = 1; + return APR_SUCCESS; + } + else if (H2_BUCKET_IS_HEADERS(b)) { + if (*plen > 0) { + /* data before the response, can only return up to here */ + return APR_SUCCESS; + } + else if (pheaders) { + *pheaders = h2_bucket_headers_get(b); + APR_BUCKET_REMOVE(b); + apr_bucket_destroy(b); + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, stream->session->c, + H2_STRM_MSG(stream, "prep, -> response %d"), + (*pheaders)->status); + return APR_SUCCESS; + } + else { + return APR_EAGAIN; } - APR_ARRAY_PUSH(stream->files, apr_file_t*) = f->fd; } } + else if (b->length == 0) { + APR_BUCKET_REMOVE(b); + apr_bucket_destroy(b); + } + else { + ap_assert(b->length != (apr_size_t)-1); + *plen += b->length; + if (*plen >= requested) { + *plen = requested; + return APR_SUCCESS; + } + } + b = e; } - return status; + *is_all = 1; + return APR_SUCCESS; } -apr_status_t h2_stream_set_response(h2_stream *stream, h2_response *response, - h2_bucket_beam *output) +apr_status_t h2_stream_out_prepare(h2_stream *stream, apr_off_t *plen, + int *peos, h2_headers **pheaders) { apr_status_t status = APR_SUCCESS; - conn_rec *c = stream->session->c; - - if (!output_open(stream)) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, - "h2_stream(%ld-%d): output closed", - stream->session->id, stream->id); - return APR_ECONNRESET; - } - - stream->response = response; - stream->output = output; - stream->buffer = apr_brigade_create(stream->pool, c->bucket_alloc); - - h2_stream_filter(stream); - if (stream->output) { - status = fill_buffer(stream, 0); - } - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, c, - "h2_stream(%ld-%d): set_response(%d)", - stream->session->id, stream->id, - stream->response->http_status); - return status; -} + apr_off_t requested, missing, max_chunk = H2_DATA_CHUNK_SIZE; + conn_rec *c; + int complete; -apr_status_t h2_stream_set_error(h2_stream *stream, int http_status) -{ - h2_response *response; + ap_assert(stream); - if (stream->submitted) { - return APR_EINVAL; - } - response = h2_response_die(stream->id, http_status, stream->request, - stream->pool); - return h2_stream_set_response(stream, response, NULL); -} - -static const apr_size_t DATA_CHUNK_SIZE = ((16*1024) - 100 - 9); - -apr_status_t h2_stream_out_prepare(h2_stream *stream, - apr_off_t *plen, int *peos) -{ - conn_rec *c = stream->session->c; - apr_status_t status = APR_SUCCESS; - apr_off_t requested; - if (stream->rst_error) { *plen = 0; *peos = 1; return APR_ECONNRESET; } + + c = stream->session->c; + prep_output(stream); - if (*plen > 0) { - requested = H2MIN(*plen, DATA_CHUNK_SIZE); + /* determine how much we'd like to send. We cannot send more than + * is requested. But we can reduce the size in case the master + * connection operates in smaller chunks. (TSL warmup) */ + if (stream->session->io.write_size > 0) { + max_chunk = stream->session->io.write_size - 9; /* header bits */ + } + requested = (*plen > 0)? H2MIN(*plen, max_chunk) : max_chunk; + + /* count the buffered data until eos or a headers bucket */ + status = add_buffered_data(stream, requested, plen, peos, &complete, pheaders); + + if (status == APR_EAGAIN) { + /* TODO: ugly, someone needs to retrieve the response first */ + h2_mplx_keep_active(stream->session->mplx, stream); + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, + H2_STRM_MSG(stream, "prep, response eagain")); + return status; } - else { - requested = DATA_CHUNK_SIZE; + else if (status != APR_SUCCESS) { + return status; + } + + if (pheaders && *pheaders) { + return APR_SUCCESS; } - *plen = requested; - H2_STREAM_OUT_LOG(APLOG_TRACE2, stream, "h2_stream_out_prepare_pre"); - h2_util_bb_avail(stream->buffer, plen, peos); - if (!*peos && *plen < requested) { - /* try to get more data */ - status = fill_buffer(stream, (requested - *plen) + DATA_CHUNK_SIZE); - if (APR_STATUS_IS_EOF(status)) { + /* If there we do not have enough buffered data to satisfy the requested + * length *and* we counted the _complete_ buffer (and did not stop in the middle + * because of meta data there), lets see if we can read more from the + * output beam */ + missing = H2MIN(requested, stream->max_mem) - *plen; + if (complete && !*peos && missing > 0) { + apr_status_t rv = APR_EOF; + + if (stream->output) { + H2_STREAM_OUT_LOG(APLOG_TRACE2, stream, "pre"); + rv = h2_beam_receive(stream->output, stream->out_buffer, + APR_NONBLOCK_READ, stream->max_mem - *plen); + H2_STREAM_OUT_LOG(APLOG_TRACE2, stream, "post"); + } + + if (rv == APR_SUCCESS) { + /* count the buffer again, now that we have read output */ + status = add_buffered_data(stream, requested, plen, peos, &complete, pheaders); + } + else if (APR_STATUS_IS_EOF(rv)) { apr_bucket *eos = apr_bucket_eos_create(c->bucket_alloc); - APR_BRIGADE_INSERT_TAIL(stream->buffer, eos); - status = APR_SUCCESS; + APR_BRIGADE_INSERT_TAIL(stream->out_buffer, eos); + *peos = 1; + } + else if (APR_STATUS_IS_EAGAIN(rv)) { + /* we set this is the status of this call only if there + * is no buffered data, see check below */ + } + else { + /* real error reading. Give this back directly, even though + * we may have something buffered. */ + status = rv; + } + } + + if (status == APR_SUCCESS) { + if (*peos || *plen) { + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, + H2_STRM_MSG(stream, "prepare, len=%ld eos=%d"), + (long)*plen, *peos); + } + else { + status = APR_EAGAIN; + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, + H2_STRM_MSG(stream, "prepare, no data")); } - else if (status == APR_EAGAIN) { - /* did not receive more, it's ok */ - status = APR_SUCCESS; - } - *plen = requested; - h2_util_bb_avail(stream->buffer, plen, peos); - } - H2_STREAM_OUT_LOG(APLOG_TRACE2, stream, "h2_stream_out_prepare_post"); - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, c, - "h2_stream(%ld-%d): prepare, len=%ld eos=%d, trailers=%s", - c->id, stream->id, (long)*plen, *peos, - (stream->response && stream->response->trailers)? - "yes" : "no"); - if (!*peos && !*plen && status == APR_SUCCESS) { - return APR_EAGAIN; } return status; } +static int is_not_headers(apr_bucket *b) +{ + return !H2_BUCKET_IS_HEADERS(b); +} apr_status_t h2_stream_read_to(h2_stream *stream, apr_bucket_brigade *bb, apr_off_t *plen, int *peos) @@ -628,47 +946,28 @@ apr_status_t h2_stream_read_to(h2_stream if (stream->rst_error) { return APR_ECONNRESET; } - status = h2_append_brigade(bb, stream->buffer, plen, peos); + status = h2_append_brigade(bb, stream->out_buffer, plen, peos, is_not_headers); if (status == APR_SUCCESS && !*peos && !*plen) { status = APR_EAGAIN; } ap_log_cerror(APLOG_MARK, APLOG_TRACE2, status, c, - "h2_stream(%ld-%d): read_to, len=%ld eos=%d", - c->id, stream->id, (long)*plen, *peos); + H2_STRM_MSG(stream, "read_to, len=%ld eos=%d"), + (long)*plen, *peos); return status; } -int h2_stream_input_is_open(const h2_stream *stream) -{ - return input_open(stream); -} - -int h2_stream_needs_submit(const h2_stream *stream) -{ - switch (stream->state) { - case H2_STREAM_ST_OPEN: - case H2_STREAM_ST_CLOSED_INPUT: - case H2_STREAM_ST_CLOSED_OUTPUT: - case H2_STREAM_ST_CLOSED: - return !stream->submitted; - default: - return 0; - } -} - -apr_status_t h2_stream_submit_pushes(h2_stream *stream) +apr_status_t h2_stream_submit_pushes(h2_stream *stream, h2_headers *response) { apr_status_t status = APR_SUCCESS; apr_array_header_t *pushes; int i; - pushes = h2_push_collect_update(stream, stream->request, - h2_stream_get_response(stream)); + pushes = h2_push_collect_update(stream, stream->request, response); if (pushes && !apr_is_empty_array(pushes)) { ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, stream->session->c, - "h2_stream(%ld-%d): found %d push candidates", - stream->session->id, stream->id, pushes->nelts); + H2_STRM_MSG(stream, "found %d push candidates"), + pushes->nelts); for (i = 0; i < pushes->nelts; ++i) { h2_push *push = APR_ARRAY_IDX(pushes, i, h2_push*); h2_stream *s = h2_session_push(stream->session, stream, push); @@ -683,14 +982,13 @@ apr_status_t h2_stream_submit_pushes(h2_ apr_table_t *h2_stream_get_trailers(h2_stream *stream) { - return stream->response? stream->response->trailers : NULL; + return NULL; } -const h2_priority *h2_stream_get_priority(h2_stream *stream) +const h2_priority *h2_stream_get_priority(h2_stream *stream, + h2_headers *response) { - h2_response *response = h2_stream_get_response(stream); - - if (response && stream->request && stream->request->initiated_on) { + if (response && stream->initiated_on) { const char *ctype = apr_table_get(response->headers, "content-type"); if (ctype) { /* FIXME: Not good enough, config needs to come from request->server */ @@ -700,3 +998,86 @@ const h2_priority *h2_stream_get_priorit return NULL; } +int h2_stream_is_ready(h2_stream *stream) +{ + if (stream->has_response) { + return 1; + } + else if (stream->out_buffer && get_first_headers_bucket(stream->out_buffer)) { + return 1; + } + return 0; +} + +int h2_stream_was_closed(const h2_stream *stream) +{ + switch (stream->state) { + case H2_SS_CLOSED: + case H2_SS_CLEANUP: + return 1; + default: + return 0; + } +} + +apr_status_t h2_stream_in_consumed(h2_stream *stream, apr_off_t amount) +{ + h2_session *session = stream->session; + + if (amount > 0) { + apr_off_t consumed = amount; + + while (consumed > 0) { + int len = (consumed > INT_MAX)? INT_MAX : (int)consumed; + nghttp2_session_consume(session->ngh2, stream->id, len); + consumed -= len; + } + +#ifdef H2_NG2_LOCAL_WIN_SIZE + if (1) { + int cur_size = nghttp2_session_get_stream_local_window_size( + session->ngh2, stream->id); + int win = stream->in_window_size; + int thigh = win * 8/10; + int tlow = win * 2/10; + const int win_max = 2*1024*1024; + const int win_min = 32*1024; + + /* Work in progress, probably should add directives for these + * values once this stabilizes somewhat. The general idea is + * to adapt stream window sizes if the input window changes + * a) very quickly (< good RTT) from full to empty + * b) only a little bit (> bad RTT) + * where in a) it grows and in b) it shrinks again. + */ + if (cur_size > thigh && amount > thigh && win < win_max) { + /* almost empty again with one reported consumption, how + * long did this take? */ + long ms = apr_time_msec(apr_time_now() - stream->in_last_write); + if (ms < 40) { + win = H2MIN(win_max, win + (64*1024)); + } + } + else if (cur_size < tlow && amount < tlow && win > win_min) { + /* staying full, for how long already? */ + long ms = apr_time_msec(apr_time_now() - stream->in_last_write); + if (ms > 700) { + win = H2MAX(win_min, win - (32*1024)); + } + } + + if (win != stream->in_window_size) { + stream->in_window_size = win; + nghttp2_session_set_local_window_size(session->ngh2, + NGHTTP2_FLAG_NONE, stream->id, win); + } + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, session->c, + "h2_stream(%ld-%d): consumed %ld bytes, window now %d/%d", + session->id, stream->id, (long)amount, + cur_size, stream->in_window_size); + } +#endif + } + return APR_SUCCESS; +} + diff -up --new-file httpd-2.4.23/modules/http2/h2_stream.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_stream.h --- httpd-2.4.23/modules/http2/h2_stream.h 2016-05-30 21:58:14.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_stream.h 2017-06-06 11:08:25.000000000 +0200 @@ -25,74 +25,132 @@ * connection to the client. The h2_session writes to the h2_stream, * adding HEADERS and DATA and finally an EOS. When headers are done, * h2_stream is scheduled for handling, which is expected to produce - * a h2_response. + * a response h2_headers at least. * - * The h2_response gives the HEADER frames to sent to the client, followed - * by DATA frames read from the h2_stream until EOS is reached. + * The h2_headers may be followed by more h2_headers (interim responses) and + * by DATA frames read from the h2_stream until EOS is reached. Trailers + * are send when a last h2_headers is received. This always closes the stream + * output. */ struct h2_mplx; struct h2_priority; struct h2_request; -struct h2_response; +struct h2_headers; struct h2_session; -struct h2_sos; +struct h2_task; struct h2_bucket_beam; typedef struct h2_stream h2_stream; +typedef void h2_stream_state_cb(void *ctx, h2_stream *stream); +typedef void h2_stream_event_cb(void *ctx, h2_stream *stream, + h2_stream_event_t ev); + +/** + * Callback structure for events and stream state transisitions + */ +typedef struct h2_stream_monitor { + void *ctx; + h2_stream_state_cb *on_state_enter; /* called when a state is entered */ + h2_stream_state_cb *on_state_invalid; /* called when an invalid state change + was detected */ + h2_stream_event_cb *on_state_event; /* called right before the given event + result in a new stream state */ + h2_stream_event_cb *on_event; /* called for events that do not + trigger a state change */ +} h2_stream_monitor; + struct h2_stream { - int id; /* http2 stream id */ - h2_stream_state_t state; /* http/2 state of this stream */ + int id; /* http2 stream identifier */ + int initiated_on; /* initiating stream id (PUSH) or 0 */ + apr_pool_t *pool; /* the memory pool for this stream */ struct h2_session *session; /* the session this stream belongs to */ + h2_stream_state_t state; /* state of this stream */ - apr_pool_t *pool; /* the memory pool for this stream */ - struct h2_request *request; /* the request made in this stream */ - struct h2_bucket_beam *input; + apr_time_t created; /* when stream was created */ + + const struct h2_request *request; /* the request made in this stream */ + struct h2_request *rtmp; /* request being assembled */ + apr_table_t *trailers; /* optional incoming trailers */ int request_headers_added; /* number of request headers added */ - struct h2_response *response; + struct h2_bucket_beam *input; + apr_bucket_brigade *in_buffer; + int in_window_size; + apr_time_t in_last_write; + struct h2_bucket_beam *output; - apr_bucket_brigade *buffer; - apr_bucket_brigade *tmp; - apr_array_header_t *files; /* apr_file_t* we collected during I/O */ + apr_bucket_brigade *out_buffer; + apr_size_t max_mem; /* maximum amount of data buffered */ int rst_error; /* stream error for RST_STREAM */ unsigned int aborted : 1; /* was aborted */ - unsigned int suspended : 1; /* DATA sending has been suspended */ unsigned int scheduled : 1; /* stream has been scheduled */ - unsigned int started : 1; /* stream has started processing */ - unsigned int submitted : 1; /* response HEADER has been sent */ + unsigned int has_response : 1; /* response headers are known */ + unsigned int input_eof : 1; /* no more request data coming */ + unsigned int out_checked : 1; /* output eof was double checked */ + unsigned int push_policy; /* which push policy to use for this request */ + + struct h2_task *task; /* assigned task to fullfill request */ - apr_off_t input_remaining; /* remaining bytes on input as advertised via content-length */ - apr_off_t data_frames_sent; /* # of DATA frames sent out for this stream */ + const h2_priority *pref_priority; /* preferred priority for this stream */ + apr_off_t out_data_frames; /* # of DATA frames sent */ + apr_off_t out_data_octets; /* # of DATA octets (payload) sent */ + apr_off_t in_data_frames; /* # of DATA frames received */ + apr_off_t in_data_octets; /* # of DATA octets (payload) received */ + + h2_stream_monitor *monitor; /* optional monitor for stream states */ }; #define H2_STREAM_RST(s, def) (s->rst_error? s->rst_error : (def)) /** - * Create a stream in OPEN state. + * Create a stream in H2_SS_IDLE state. * @param id the stream identifier * @param pool the memory pool to use for this stream * @param session the session this stream belongs to + * @param monitor an optional monitor to be called for events and + * state transisitions + * @param initiated_on the id of the stream this one was initiated on (PUSH) + * * @return the newly opened stream */ -h2_stream *h2_stream_open(int id, apr_pool_t *pool, struct h2_session *session, - int initiated_on, const struct h2_request *req); +h2_stream *h2_stream_create(int id, apr_pool_t *pool, + struct h2_session *session, + h2_stream_monitor *monitor, + int initiated_on); /** - * Cleanup any resources still held by the stream, called by last bucket. + * Destroy memory pool if still owned by the stream. */ -void h2_stream_eos_destroy(h2_stream *stream); +void h2_stream_destroy(h2_stream *stream); /** - * Destroy memory pool if still owned by the stream. + * Prepare the stream so that processing may start. + * + * This is the time to allocated resources not needed before. + * + * @param stream the stream to prep */ -void h2_stream_destroy(h2_stream *stream); +apr_status_t h2_stream_prep_processing(h2_stream *stream); + +/* + * Set a new monitor for this stream, replacing any existing one. Can + * be called with NULL to have no monitor installed. + */ +void h2_stream_set_monitor(h2_stream *stream, h2_stream_monitor *monitor); + +/** + * Dispatch (handle) an event on the given stream. + * @param stream the streama the event happened on + * @param ev the type of event + */ +void h2_stream_dispatch(h2_stream *stream, h2_stream_event_t ev); /** - * Removes stream from h2_session and destroys it. + * Cleanup references into requst processing. * * @param stream the stream to cleanup */ @@ -107,14 +165,30 @@ void h2_stream_cleanup(h2_stream *stream */ apr_pool_t *h2_stream_detach_pool(h2_stream *stream); +/** + * Notify the stream that amount bytes have been consumed of its input + * since the last invocation of this method (delta amount). + */ +apr_status_t h2_stream_in_consumed(h2_stream *stream, apr_off_t amount); + +/** + * Set complete stream headers from given h2_request. + * + * @param stream stream to write request to + * @param r the request with all the meta data + * @param eos != 0 iff stream input is closed + */ +void h2_stream_set_request(h2_stream *stream, const h2_request *r); /** - * Initialize stream->request with the given request_rec. + * Set complete stream header from given request_rec. * * @param stream stream to write request to * @param r the request with all the meta data + * @param eos != 0 iff stream input is closed */ -apr_status_t h2_stream_set_request(h2_stream *stream, request_rec *r); +apr_status_t h2_stream_set_request_rec(h2_stream *stream, + request_rec *r, int eos); /* * Add a HTTP/2 header (including pseudo headers) or trailer @@ -130,22 +204,21 @@ apr_status_t h2_stream_add_header(h2_str const char *name, size_t nlen, const char *value, size_t vlen); -/** - * Closes the stream's input. - * - * @param stream stream to close intput of - */ -apr_status_t h2_stream_close_input(h2_stream *stream); +apr_status_t h2_stream_send_frame(h2_stream *stream, int frame_type, int flags); +apr_status_t h2_stream_recv_frame(h2_stream *stream, int frame_type, int flags); /* - * Write a chunk of DATA to the stream. + * Process a frame of received DATA. * * @param stream stream to write the data to + * @param flags the frame flags * @param data the beginning of the bytes to write * @param len the number of bytes to write */ -apr_status_t h2_stream_write_data(h2_stream *stream, - const char *data, size_t len, int eos); +apr_status_t h2_stream_recv_DATA(h2_stream *stream, uint8_t flags, + const uint8_t *data, size_t len); + +apr_status_t h2_stream_flush_input(h2_stream *stream); /** * Reset the stream. Stream write/reads will return errors afterwards. @@ -156,44 +229,14 @@ apr_status_t h2_stream_write_data(h2_str void h2_stream_rst(h2_stream *stream, int error_code); /** - * Schedule the stream for execution. All header information must be - * present. Use the given priority comparision callback to determine - * order in queued streams. - * - * @param stream the stream to schedule - * @param eos != 0 iff no more input will arrive - * @param cmp priority comparision - * @param ctx context for comparision - */ -apr_status_t h2_stream_schedule(h2_stream *stream, int eos, int push_enabled, - h2_stream_pri_cmp *cmp, void *ctx); - -/** - * Determine if stream has been scheduled already. + * Determine if stream was closed already. This is true for + * states H2_SS_CLOSED, H2_SS_CLEANUP. But not true + * for H2_SS_CLOSED_L and H2_SS_CLOSED_R. + * * @param stream the stream to check on - * @return != 0 iff stream has been scheduled - */ -int h2_stream_is_scheduled(const h2_stream *stream); - -struct h2_response *h2_stream_get_response(h2_stream *stream); - -/** - * Set the response for this stream. Invoked when all meta data for - * the stream response has been collected. - * - * @param stream the stream to set the response for - * @param response the response data for the stream - * @param bb bucket brigade with output data for the stream. Optional, - * may be incomplete. + * @return != 0 iff stream has been closed */ -apr_status_t h2_stream_set_response(h2_stream *stream, - struct h2_response *response, - struct h2_bucket_beam *output); - -/** - * Set the HTTP error status as response. - */ -apr_status_t h2_stream_set_error(h2_stream *stream, int http_status); +int h2_stream_was_closed(const h2_stream *stream); /** * Do a speculative read on the stream output to determine the @@ -204,12 +247,13 @@ apr_status_t h2_stream_set_error(h2_stre * may be read without blocking * @param peos (out) != 0 iff end of stream will be reached when reading plen * bytes (out value). + * @param presponse (out) the response of one became available * @return APR_SUCCESS if out information was computed successfully. * APR_EAGAIN if not data is available and end of stream has not been * reached yet. */ -apr_status_t h2_stream_out_prepare(h2_stream *stream, - apr_off_t *plen, int *peos); +apr_status_t h2_stream_out_prepare(h2_stream *stream, apr_off_t *plen, + int *peos, h2_headers **presponse); /** * Read a maximum number of bytes into the bucket brigade. @@ -237,44 +281,34 @@ apr_status_t h2_stream_read_to(h2_stream apr_table_t *h2_stream_get_trailers(h2_stream *stream); /** - * Set the suspended state of the stream. - * @param stream the stream to change state on - * @param suspended boolean value if stream is suspended + * Submit any server push promises on this stream and schedule + * the tasks connection with these. + * + * @param stream the stream for which to submit */ -void h2_stream_set_suspended(h2_stream *stream, int suspended); +apr_status_t h2_stream_submit_pushes(h2_stream *stream, h2_headers *response); /** - * Check if the stream has been suspended. - * @param stream the stream to check - * @return != 0 iff stream is suspended. + * Get priority information set for this stream. */ -int h2_stream_is_suspended(const h2_stream *stream); +const struct h2_priority *h2_stream_get_priority(h2_stream *stream, + h2_headers *response); /** - * Check if the stream has open input. - * @param stream the stream to check - * @return != 0 iff stream has open input. + * Return a textual representation of the stream state as in RFC 7540 + * nomenclator, all caps, underscores. */ -int h2_stream_input_is_open(const h2_stream *stream); +const char *h2_stream_state_str(h2_stream *stream); /** - * Check if the stream has not submitted a response or RST yet. + * Determine if stream is ready for submitting a response or a RST * @param stream the stream to check - * @return != 0 iff stream has not submitted a response or RST. */ -int h2_stream_needs_submit(const h2_stream *stream); +int h2_stream_is_ready(h2_stream *stream); -/** - * Submit any server push promises on this stream and schedule - * the tasks connection with these. - * - * @param stream the stream for which to submit - */ -apr_status_t h2_stream_submit_pushes(h2_stream *stream); +#define H2_STRM_MSG(s, msg) \ + "h2_stream(%ld-%d,%s): "msg, s->session->id, s->id, h2_stream_state_str(s) -/** - * Get priority information set for this stream. - */ -const struct h2_priority *h2_stream_get_priority(h2_stream *stream); +#define H2_STRM_LOG(aplogno, s, msg) aplogno H2_STRM_MSG(s, msg) #endif /* defined(__mod_h2__h2_stream__) */ diff -up --new-file httpd-2.4.23/modules/http2/h2_stream_set.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_stream_set.c --- httpd-2.4.23/modules/http2/h2_stream_set.c 2015-11-20 16:13:11.000000000 +0100 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_stream_set.c 1970-01-01 01:00:00.000000000 +0100 @@ -1,145 +0,0 @@ -/* Copyright 2015 greenbytes GmbH (https://www.greenbytes.de) - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include <assert.h> -#include <stddef.h> - -#include <apr_hash.h> -#include <apr_strings.h> - -#include <httpd.h> -#include <http_log.h> - -#include "h2_private.h" -#include "h2_stream.h" -#include "h2_stream_set.h" - - -struct h2_stream_set { - apr_hash_t *hash; -}; - -static unsigned int stream_hash(const char *key, apr_ssize_t *klen) -{ - return (unsigned int)(*((int*)key)); -} - -h2_stream_set *h2_stream_set_create(apr_pool_t *pool, int max) -{ - h2_stream_set *sp = apr_pcalloc(pool, sizeof(h2_stream_set)); - sp->hash = apr_hash_make_custom(pool, stream_hash); - - return sp; -} - -void h2_stream_set_destroy(h2_stream_set *sp) -{ - (void)sp; -} - -h2_stream *h2_stream_set_get(h2_stream_set *sp, int stream_id) -{ - return apr_hash_get(sp->hash, &stream_id, sizeof(stream_id)); -} - -void h2_stream_set_add(h2_stream_set *sp, h2_stream *stream) -{ - apr_hash_set(sp->hash, &stream->id, sizeof(stream->id), stream); -} - -void h2_stream_set_remove(h2_stream_set *sp, int stream_id) -{ - apr_hash_set(sp->hash, &stream_id, sizeof(stream_id), NULL); -} - -int h2_stream_set_is_empty(h2_stream_set *sp) -{ - return apr_hash_count(sp->hash) == 0; -} - -apr_size_t h2_stream_set_size(h2_stream_set *sp) -{ - return apr_hash_count(sp->hash); -} - -typedef struct { - h2_stream_set_iter_fn *iter; - void *ctx; -} iter_ctx; - -static int hash_iter(void *ctx, const void *key, apr_ssize_t klen, - const void *val) -{ - iter_ctx *ictx = ctx; - return ictx->iter(ictx->ctx, (h2_stream*)val); -} - -void h2_stream_set_iter(h2_stream_set *sp, - h2_stream_set_iter_fn *iter, void *ctx) -{ - iter_ctx ictx; - ictx.iter = iter; - ictx.ctx = ctx; - apr_hash_do(hash_iter, &ictx, sp->hash); -} - -static int unsubmitted_iter(void *ctx, h2_stream *stream) -{ - if (h2_stream_needs_submit(stream)) { - *((int *)ctx) = 1; - return 0; - } - return 1; -} - -int h2_stream_set_has_unsubmitted(h2_stream_set *sp) -{ - int has_unsubmitted = 0; - h2_stream_set_iter(sp, unsubmitted_iter, &has_unsubmitted); - return has_unsubmitted; -} - -static int input_open_iter(void *ctx, h2_stream *stream) -{ - if (h2_stream_input_is_open(stream)) { - *((int *)ctx) = 1; - return 0; - } - return 1; -} - -int h2_stream_set_has_open_input(h2_stream_set *sp) -{ - int has_input_open = 0; - h2_stream_set_iter(sp, input_open_iter, &has_input_open); - return has_input_open; -} - -static int suspended_iter(void *ctx, h2_stream *stream) -{ - if (h2_stream_is_suspended(stream)) { - *((int *)ctx) = 1; - return 0; - } - return 1; -} - -int h2_stream_set_has_suspended(h2_stream_set *sp) -{ - int has_suspended = 0; - h2_stream_set_iter(sp, suspended_iter, &has_suspended); - return has_suspended; -} - diff -up --new-file httpd-2.4.23/modules/http2/h2_stream_set.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_stream_set.h --- httpd-2.4.23/modules/http2/h2_stream_set.h 2015-11-20 16:13:11.000000000 +0100 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_stream_set.h 1970-01-01 01:00:00.000000000 +0100 @@ -1,51 +0,0 @@ -/* Copyright 2015 greenbytes GmbH (https://www.greenbytes.de) - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#ifndef __mod_h2__h2_stream_set__ -#define __mod_h2__h2_stream_set__ - -/** - * A set of h2_stream instances. Allows lookup by stream id - * and other criteria. - */ - -typedef h2_stream *h2_stream_set_match_fn(void *ctx, h2_stream *stream); -typedef int h2_stream_set_iter_fn(void *ctx, h2_stream *stream); - -typedef struct h2_stream_set h2_stream_set; - - -h2_stream_set *h2_stream_set_create(apr_pool_t *pool, int max); - -void h2_stream_set_destroy(h2_stream_set *sp); - -void h2_stream_set_add(h2_stream_set *sp, h2_stream *stream); - -h2_stream *h2_stream_set_get(h2_stream_set *sp, int stream_id); - -void h2_stream_set_remove(h2_stream_set *sp, int stream_id); - -void h2_stream_set_iter(h2_stream_set *sp, - h2_stream_set_iter_fn *iter, void *ctx); - -int h2_stream_set_is_empty(h2_stream_set *sp); - -apr_size_t h2_stream_set_size(h2_stream_set *sp); - -int h2_stream_set_has_unsubmitted(h2_stream_set *sp); -int h2_stream_set_has_open_input(h2_stream_set *sp); -int h2_stream_set_has_suspended(h2_stream_set *sp); - -#endif /* defined(__mod_h2__h2_stream_set__) */ diff -up --new-file httpd-2.4.23/modules/http2/h2_switch.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_switch.c --- httpd-2.4.23/modules/http2/h2_switch.c 2016-02-10 00:09:24.000000000 +0100 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_switch.c 2017-07-04 14:34:15.000000000 +0200 @@ -55,6 +55,10 @@ static int h2_protocol_propose(conn_rec const char **protos = is_tls? h2_tls_protos : h2_clear_protos; (void)s; + if (!h2_mpm_supported()) { + return DECLINED; + } + if (strcmp(AP_PROTOCOL_HTTP1, ap_get_protocol(c))) { /* We do not know how to switch from anything else but http/1.1. */ @@ -127,6 +131,10 @@ static int h2_protocol_switch(conn_rec * const char **p = protos; (void)s; + if (!h2_mpm_supported()) { + return DECLINED; + } + while (*p) { if (!strcmp(*p, protocol)) { found = 1; @@ -160,6 +168,7 @@ static int h2_protocol_switch(conn_rec * if (status != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, status, r, APLOGNO(03088) "session setup"); + h2_ctx_clear(c); return status; } diff -up --new-file httpd-2.4.23/modules/http2/h2_switch.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_switch.h --- httpd-2.4.23/modules/http2/h2_switch.h 2015-09-07 19:37:19.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_switch.h 2016-08-25 14:48:18.000000000 +0200 @@ -17,7 +17,7 @@ #define __mod_h2__h2_switch__ /* - * One time, post config intialization. + * One time, post config initialization. */ apr_status_t h2_switch_init(apr_pool_t *pool, server_rec *s); diff -up --new-file httpd-2.4.23/modules/http2/h2_task.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_task.c --- httpd-2.4.23/modules/http2/h2_task.c 2016-06-22 15:18:13.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_task.c 2017-10-13 10:37:45.000000000 +0200 @@ -17,7 +17,6 @@ #include <stddef.h> #include <apr_atomic.h> -#include <apr_thread_cond.h> #include <apr_strings.h> #include <httpd.h> @@ -42,12 +41,27 @@ #include "h2_h2.h" #include "h2_mplx.h" #include "h2_request.h" +#include "h2_headers.h" #include "h2_session.h" #include "h2_stream.h" #include "h2_task.h" -#include "h2_worker.h" #include "h2_util.h" +static void H2_TASK_OUT_LOG(int lvl, h2_task *task, apr_bucket_brigade *bb, + const char *tag) +{ + if (APLOG_C_IS_LEVEL(task->c, lvl)) { + conn_rec *c = task->c; + char buffer[4 * 1024]; + const char *line = "(null)"; + apr_size_t len, bmax = sizeof(buffer)/sizeof(buffer[0]); + + len = h2_util_bb_print(buffer, bmax, tag, "", bb); + ap_log_cerror(APLOG_MARK, lvl, 0, c, "bb_dump(%s): %s", + task->id, len? buffer : line); + } +} + /******************************************************************************* * task input handling ******************************************************************************/ @@ -59,107 +73,186 @@ static int input_ser_header(void *ctx, c return 1; } -static void make_chunk(h2_task *task, apr_bucket_brigade *bb, - apr_bucket *first, apr_uint64_t chunk_len, - apr_bucket *tail) -{ - /* Surround the buckets [first, tail[ with new buckets carrying the - * HTTP/1.1 chunked encoding format. If tail is NULL, the chunk extends - * to the end of the brigade. */ - char buffer[128]; - apr_bucket *c; - int len; - - len = apr_snprintf(buffer, H2_ALEN(buffer), - "%"APR_UINT64_T_HEX_FMT"\r\n", chunk_len); - c = apr_bucket_heap_create(buffer, len, NULL, bb->bucket_alloc); - APR_BUCKET_INSERT_BEFORE(first, c); - c = apr_bucket_heap_create("\r\n", 2, NULL, bb->bucket_alloc); - if (tail) { - APR_BUCKET_INSERT_BEFORE(tail, c); - } - else { - APR_BRIGADE_INSERT_TAIL(bb, c); - } +/******************************************************************************* + * task output handling + ******************************************************************************/ + +static apr_status_t open_output(h2_task *task) +{ + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, task->c, APLOGNO(03348) + "h2_task(%s): open output to %s %s %s", + task->id, task->request->method, + task->request->authority, + task->request->path); + task->output.opened = 1; + return h2_mplx_out_open(task->mplx, task->stream_id, task->output.beam); } -static apr_status_t input_handle_eos(h2_task *task, request_rec *r, - apr_bucket *b) +static apr_status_t send_out(h2_task *task, apr_bucket_brigade* bb, int block) { - apr_status_t status = APR_SUCCESS; - apr_bucket_brigade *bb = task->input.bb; - apr_table_t *t = task->request? task->request->trailers : NULL; + apr_off_t written, left; + apr_status_t status; - if (task->input.chunked) { - task->input.tmp = apr_brigade_split_ex(bb, b, task->input.tmp); - if (t && !apr_is_empty_table(t)) { - status = apr_brigade_puts(bb, NULL, NULL, "0\r\n"); - apr_table_do(input_ser_header, task, t, NULL); - status = apr_brigade_puts(bb, NULL, NULL, "\r\n"); - } - else { - status = apr_brigade_puts(bb, NULL, NULL, "0\r\n\r\n"); + apr_brigade_length(bb, 0, &written); + H2_TASK_OUT_LOG(APLOG_TRACE2, task, bb, "h2_task send_out"); + h2_beam_log(task->output.beam, task->c, APLOG_TRACE2, "send_out(before)"); + /* engines send unblocking */ + status = h2_beam_send(task->output.beam, bb, + block? APR_BLOCK_READ : APR_NONBLOCK_READ); + h2_beam_log(task->output.beam, task->c, APLOG_TRACE2, "send_out(after)"); + + if (APR_STATUS_IS_EAGAIN(status)) { + apr_brigade_length(bb, 0, &left); + written -= left; + status = APR_SUCCESS; + } + if (status == APR_SUCCESS) { + if (h2_task_logio_add_bytes_out) { + h2_task_logio_add_bytes_out(task->c, written); } - APR_BRIGADE_CONCAT(bb, task->input.tmp); + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, task->c, + "h2_task(%s): send_out done", task->id); } - else if (r && t && !apr_is_empty_table(t)){ - /* trailers passed in directly. */ - apr_table_overlap(r->trailers_in, t, APR_OVERLAP_TABLES_SET); + else { + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, task->c, + "h2_task(%s): send_out (%ld bytes)", + task->id, (long)written); } - task->input.eos_written = 1; return status; } -static apr_status_t input_append_eos(h2_task *task, request_rec *r) +/* Bring the data from the brigade (which represents the result of the + * request_rec out filter chain) into the h2_mplx for further sending + * on the master connection. + */ +static apr_status_t slave_out(h2_task *task, ap_filter_t* f, + apr_bucket_brigade* bb) { - apr_status_t status = APR_SUCCESS; - apr_bucket_brigade *bb = task->input.bb; - apr_table_t *t = task->request? task->request->trailers : NULL; + apr_bucket *b; + apr_status_t rv = APR_SUCCESS; + int flush = 0, blocking; + + if (task->frozen) { + h2_util_bb_log(task->c, task->stream_id, APLOG_TRACE2, + "frozen task output write, ignored", bb); + while (!APR_BRIGADE_EMPTY(bb)) { + b = APR_BRIGADE_FIRST(bb); + if (AP_BUCKET_IS_EOR(b)) { + APR_BUCKET_REMOVE(b); + task->eor = b; + } + else { + apr_bucket_delete(b); + } + } + return APR_SUCCESS; + } - if (task->input.chunked) { - if (t && !apr_is_empty_table(t)) { - status = apr_brigade_puts(bb, NULL, NULL, "0\r\n"); - apr_table_do(input_ser_header, task, t, NULL); - status = apr_brigade_puts(bb, NULL, NULL, "\r\n"); +send: + /* we send block once we opened the output, so someone is there + * reading it *and* the task is not assigned to a h2_req_engine */ + blocking = (!task->assigned && task->output.opened); + for (b = APR_BRIGADE_FIRST(bb); + b != APR_BRIGADE_SENTINEL(bb); + b = APR_BUCKET_NEXT(b)) { + if (APR_BUCKET_IS_FLUSH(b) || APR_BUCKET_IS_EOS(b) || AP_BUCKET_IS_EOR(b)) { + flush = 1; + break; } - else { - status = apr_brigade_puts(bb, NULL, NULL, "0\r\n\r\n"); + } + + if (task->output.bb && !APR_BRIGADE_EMPTY(task->output.bb)) { + /* still have data buffered from previous attempt. + * setaside and append new data and try to pass the complete data */ + if (!APR_BRIGADE_EMPTY(bb)) { + if (APR_SUCCESS != (rv = ap_save_brigade(f, &task->output.bb, &bb, task->pool))) { + goto out; + } } + rv = send_out(task, task->output.bb, blocking); } - else if (r && t && !apr_is_empty_table(t)){ - /* trailers passed in directly. */ - apr_table_overlap(r->trailers_in, t, APR_OVERLAP_TABLES_SET); + else { + /* no data buffered previously, pass brigade directly */ + rv = send_out(task, bb, blocking); + + if (APR_SUCCESS == rv && !APR_BRIGADE_EMPTY(bb)) { + /* output refused to buffer it all, time to open? */ + if (!task->output.opened && APR_SUCCESS == (rv = open_output(task))) { + /* Make another attempt to send the data. With the output open, + * the call might be blocking and send all data, so we do not need + * to save the brigade */ + goto send; + } + else if (blocking && flush) { + /* Need to keep on doing this. */ + goto send; + } + + if (APR_SUCCESS == rv) { + /* could not write all, buffer the rest */ + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, rv, task->c, APLOGNO(03405) + "h2_slave_out(%s): saving brigade", task->id); + ap_assert(NULL); + rv = ap_save_brigade(f, &task->output.bb, &bb, task->pool); + flush = 1; + } + } } - APR_BRIGADE_INSERT_TAIL(bb, apr_bucket_eos_create(bb->bucket_alloc)); - task->input.eos_written = 1; - return status; + + if (APR_SUCCESS == rv && !task->output.opened && flush) { + /* got a flush or could not write all, time to tell someone to read */ + rv = open_output(task); + } +out: + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, rv, task->c, + "h2_slave_out(%s): slave_out leave", task->id); + return rv; +} + +static apr_status_t output_finish(h2_task *task) +{ + if (!task->output.opened) { + return open_output(task); + } + return APR_SUCCESS; } -static apr_status_t input_read(h2_task *task, ap_filter_t* f, - apr_bucket_brigade* bb, ap_input_mode_t mode, - apr_read_type_e block, apr_off_t readbytes) +/******************************************************************************* + * task slave connection filters + ******************************************************************************/ + +static apr_status_t h2_filter_slave_in(ap_filter_t* f, + apr_bucket_brigade* bb, + ap_input_mode_t mode, + apr_read_type_e block, + apr_off_t readbytes) { + h2_task *task; apr_status_t status = APR_SUCCESS; - apr_bucket *b, *next, *first_data; - apr_off_t bblen = 0; + apr_bucket *b, *next; + apr_off_t bblen; + const int trace1 = APLOGctrace1(f->c); + apr_size_t rmax = ((readbytes <= APR_SIZE_MAX)? + (apr_size_t)readbytes : APR_SIZE_MAX); - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, f->c, - "h2_task(%s): read, mode=%d, block=%d, readbytes=%ld", - task->id, mode, block, (long)readbytes); + task = h2_ctx_cget_task(f->c); + ap_assert(task); + + if (trace1) { + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, f->c, + "h2_slave_in(%s): read, mode=%d, block=%d, readbytes=%ld", + task->id, mode, block, (long)readbytes); + } if (mode == AP_MODE_INIT) { return ap_get_brigade(f->c->input_filters, bb, mode, block, readbytes); } - if (f->c->aborted || !task->request) { + if (f->c->aborted) { return APR_ECONNABORTED; } if (!task->input.bb) { - if (!task->input.eos_written) { - input_append_eos(task, f->r); - return APR_SUCCESS; - } return APR_EOF; } @@ -173,25 +266,25 @@ static apr_status_t input_read(h2_task * } } - while (APR_BRIGADE_EMPTY(task->input.bb) && !task->input.eos) { + while (APR_BRIGADE_EMPTY(task->input.bb)) { /* Get more input data for our request. */ - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, f->c, - "h2_task(%s): get more data from mplx, block=%d, " - "readbytes=%ld, queued=%ld", - task->id, block, (long)readbytes, (long)bblen); - - /* Override the block mode we get called with depending on the input's - * setting. */ + if (trace1) { + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, f->c, + "h2_slave_in(%s): get more data from mplx, block=%d, " + "readbytes=%ld", task->id, block, (long)readbytes); + } if (task->input.beam) { status = h2_beam_receive(task->input.beam, task->input.bb, block, - H2MIN(readbytes, 32*1024)); + 128*1024); } else { status = APR_EOF; } - ap_log_cerror(APLOG_MARK, APLOG_TRACE2, status, f->c, - "h2_task(%s): read returned", task->id); + if (trace1) { + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, status, f->c, + "h2_slave_in(%s): read returned", task->id); + } if (APR_STATUS_IS_EAGAIN(status) && (mode == AP_MODE_GETLINE || block == APR_BLOCK_READ)) { /* chunked input handling does not seem to like it if we @@ -200,69 +293,39 @@ static apr_status_t input_read(h2_task * status = APR_SUCCESS; } else if (APR_STATUS_IS_EOF(status)) { - task->input.eos = 1; + break; } else if (status != APR_SUCCESS) { return status; } - - /* Inspect the buckets received, detect EOS and apply - * chunked encoding if necessary */ - h2_util_bb_log(f->c, task->stream_id, APLOG_TRACE2, - "input.beam recv raw", task->input.bb); - first_data = NULL; - bblen = 0; - for (b = APR_BRIGADE_FIRST(task->input.bb); - b != APR_BRIGADE_SENTINEL(task->input.bb); b = next) { - next = APR_BUCKET_NEXT(b); - if (APR_BUCKET_IS_METADATA(b)) { - if (first_data && task->input.chunked) { - make_chunk(task, task->input.bb, first_data, bblen, b); - first_data = NULL; - bblen = 0; - } - if (APR_BUCKET_IS_EOS(b)) { - task->input.eos = 1; - input_handle_eos(task, f->r, b); - h2_util_bb_log(f->c, task->stream_id, APLOG_TRACE2, - "input.bb after handle eos", - task->input.bb); - } - } - else if (b->length == 0) { - apr_bucket_delete(b); - } - else { - if (!first_data) { - first_data = b; - } - bblen += b->length; - } - } - if (first_data && task->input.chunked) { - make_chunk(task, task->input.bb, first_data, bblen, NULL); - } - + + if (trace1) { + h2_util_bb_log(f->c, task->stream_id, APLOG_TRACE2, + "input.beam recv raw", task->input.bb); + } if (h2_task_logio_add_bytes_in) { + apr_brigade_length(bb, 0, &bblen); h2_task_logio_add_bytes_in(f->c, bblen); } } - if (task->input.eos) { - if (!task->input.eos_written) { - input_append_eos(task, f->r); - } - if (APR_BRIGADE_EMPTY(task->input.bb)) { - return APR_EOF; - } + /* Nothing there, no more data to get. Return APR_EAGAIN on + * speculative reads, this is ap_check_pipeline()'s trick to + * see if the connection needs closing. */ + if (status == APR_EOF && APR_BRIGADE_EMPTY(task->input.bb)) { + return (mode == AP_MODE_SPECULATIVE)? APR_EAGAIN : APR_EOF; } - h2_util_bb_log(f->c, task->stream_id, APLOG_TRACE2, - "task_input.bb", task->input.bb); + if (trace1) { + h2_util_bb_log(f->c, task->stream_id, APLOG_TRACE2, + "task_input.bb", task->input.bb); + } if (APR_BRIGADE_EMPTY(task->input.bb)) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, f->c, - "h2_task(%s): no data", task->id); + if (trace1) { + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, f->c, + "h2_slave_in(%s): no data", task->id); + } return (block == APR_NONBLOCK_READ)? APR_EAGAIN : APR_EOF; } @@ -271,10 +334,10 @@ static apr_status_t input_read(h2_task * APR_BRIGADE_CONCAT(bb, task->input.bb); } else if (mode == AP_MODE_READBYTES) { - status = h2_brigade_concat_length(bb, task->input.bb, readbytes); + status = h2_brigade_concat_length(bb, task->input.bb, rmax); } else if (mode == AP_MODE_SPECULATIVE) { - status = h2_brigade_copy_length(bb, task->input.bb, readbytes); + status = h2_brigade_copy_length(bb, task->input.bb, rmax); } else if (mode == AP_MODE_GETLINE) { /* we are reading a single LF line, e.g. the HTTP headers. @@ -287,249 +350,72 @@ static apr_status_t input_read(h2_task * apr_size_t len = sizeof(buffer)-1; apr_brigade_flatten(bb, buffer, &len); buffer[len] = 0; - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, f->c, - "h2_task(%s): getline: %s", - task->id, buffer); + if (trace1) { + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, f->c, + "h2_slave_in(%s): getline: %s", + task->id, buffer); + } } } else { /* Hmm, well. There is mode AP_MODE_EATCRLF, but we chose not * to support it. Seems to work. */ ap_log_cerror(APLOG_MARK, APLOG_ERR, APR_ENOTIMPL, f->c, - APLOGNO(02942) - "h2_task, unsupported READ mode %d", mode); + APLOGNO(03472) + "h2_slave_in(%s), unsupported READ mode %d", + task->id, mode); status = APR_ENOTIMPL; } - if (APLOGctrace1(f->c)) { + if (trace1) { apr_brigade_length(bb, 0, &bblen); ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, f->c, - "h2_task(%s): return %ld data bytes", - task->id, (long)bblen); + "h2_slave_in(%s): %ld data bytes", task->id, (long)bblen); } return status; } -/******************************************************************************* - * task output handling - ******************************************************************************/ - -static apr_status_t open_response(h2_task *task) +static apr_status_t h2_filter_slave_output(ap_filter_t* filter, + apr_bucket_brigade* brigade) { - h2_response *response; - response = h2_from_h1_get_response(task->output.from_h1); - if (!response) { - /* This happens currently when ap_die(status, r) is invoked - * by a read request filter. */ - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, task->c, APLOGNO(03204) - "h2_task(%s): write without response for %s %s %s", - task->id, - task->request->method, - task->request->authority, - task->request->path); - task->c->aborted = 1; - return APR_ECONNABORTED; - } - - if (h2_task_logio_add_bytes_out) { - /* count headers as if we'd do a HTTP/1.1 serialization */ - task->output.written = h2_util_table_bytes(response->headers, 3)+1; - h2_task_logio_add_bytes_out(task->c, task->output.written); - } - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, task->c, APLOGNO(03348) - "h2_task(%s): open response to %s %s %s", - task->id, task->request->method, - task->request->authority, - task->request->path); - return h2_mplx_out_open(task->mplx, task->stream_id, response); -} - -static apr_status_t send_out(h2_task *task, apr_bucket_brigade* bb) -{ - apr_off_t written, left; + h2_task *task = h2_ctx_cget_task(filter->c); apr_status_t status; - - apr_brigade_length(bb, 0, &written); - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, task->c, - "h2_task(%s): write response body (%ld bytes)", - task->id, (long)written); - status = h2_beam_send(task->output.beam, bb, - task->blocking? APR_BLOCK_READ - : APR_NONBLOCK_READ); - if (APR_STATUS_IS_EAGAIN(status)) { - apr_brigade_length(bb, 0, &left); - written -= left; - status = APR_SUCCESS; - } - if (status == APR_SUCCESS) { - task->output.written += written; - if (h2_task_logio_add_bytes_out) { - h2_task_logio_add_bytes_out(task->c, written); - } + ap_assert(task); + status = slave_out(task, filter, brigade); + if (status != APR_SUCCESS) { + h2_task_rst(task, H2_ERR_INTERNAL_ERROR); } return status; } -/* Bring the data from the brigade (which represents the result of the - * request_rec out filter chain) into the h2_mplx for further sending - * on the master connection. - */ -static apr_status_t output_write(h2_task *task, ap_filter_t* f, - apr_bucket_brigade* bb) +static apr_status_t h2_filter_parse_h1(ap_filter_t* f, apr_bucket_brigade* bb) { - apr_bucket *b; - apr_status_t status = APR_SUCCESS; - int flush = 0; - - if (APR_BRIGADE_EMPTY(bb)) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, task->c, - "h2_task(%s): empty write", task->id); - return APR_SUCCESS; - } - - if (task->frozen) { - h2_util_bb_log(task->c, task->stream_id, APLOG_TRACE2, - "frozen task output write, ignored", bb); - while (!APR_BRIGADE_EMPTY(bb)) { - b = APR_BRIGADE_FIRST(bb); - if (AP_BUCKET_IS_EOR(b)) { - APR_BUCKET_REMOVE(b); - task->eor = b; - } - else { - apr_bucket_delete(b); - } - } - return APR_SUCCESS; - } - - if (!task->output.beam) { - h2_beam_create(&task->output.beam, task->pool, - task->stream_id, "output", 0); - } - - /* Attempt to write saved brigade first */ - if (task->output.bb && !APR_BRIGADE_EMPTY(task->output.bb)) { - status = send_out(task, task->output.bb); - if (status != APR_SUCCESS) { - return status; - } - } + h2_task *task = h2_ctx_cget_task(f->c); + apr_status_t status; - /* If there is nothing saved (anymore), try to write the brigade passed */ - if ((!task->output.bb || APR_BRIGADE_EMPTY(task->output.bb)) - && !APR_BRIGADE_EMPTY(bb)) { - /* check if we have a flush before the end-of-request */ - if (!task->output.response_open) { - for (b = APR_BRIGADE_FIRST(bb); - b != APR_BRIGADE_SENTINEL(bb); - b = APR_BUCKET_NEXT(b)) { - if (AP_BUCKET_IS_EOR(b)) { - break; - } - else if (APR_BUCKET_IS_FLUSH(b)) { - flush = 1; - } - } - } - - status = send_out(task, bb); - if (status != APR_SUCCESS) { + ap_assert(task); + /* There are cases where we need to parse a serialized http/1.1 + * response. One example is a 100-continue answer in serialized mode + * or via a mod_proxy setup */ + while (bb && !task->output.sent_response) { + status = h2_from_h1_parse_response(task, f, bb); + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, status, f->c, + "h2_task(%s): parsed response", task->id); + if (APR_BRIGADE_EMPTY(bb) || status != APR_SUCCESS) { return status; } } - /* If the passed brigade is not empty, save it before return */ - if (!APR_BRIGADE_EMPTY(bb)) { - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, task->c, APLOGNO(03405) - "h2_task(%s): could not write all, saving brigade", - task->id); - if (!task->output.bb) { - task->output.bb = apr_brigade_create(task->pool, - task->c->bucket_alloc); - } - return ap_save_brigade(f, &task->output.bb, &bb, task->pool); - } - - if (!task->output.response_open - && (flush || h2_beam_get_mem_used(task->output.beam) > (32*1024))) { - /* if we have enough buffered or we got a flush bucket, open - * the response now. */ - status = open_response(task); - task->output.response_open = 1; - } - - return status; -} - -static apr_status_t output_finish(h2_task *task) -{ - apr_status_t status = APR_SUCCESS; - - if (!task->output.response_open) { - status = open_response(task); - task->output.response_open = 1; - } - return status; -} - -/******************************************************************************* - * task slave connection filters - ******************************************************************************/ - -static apr_status_t h2_filter_stream_input(ap_filter_t* filter, - apr_bucket_brigade* brigade, - ap_input_mode_t mode, - apr_read_type_e block, - apr_off_t readbytes) -{ - h2_task *task = h2_ctx_cget_task(filter->c); - AP_DEBUG_ASSERT(task); - return input_read(task, filter, brigade, mode, block, readbytes); -} - -static apr_status_t h2_filter_stream_output(ap_filter_t* filter, - apr_bucket_brigade* brigade) -{ - h2_task *task = h2_ctx_cget_task(filter->c); - AP_DEBUG_ASSERT(task); - return output_write(task, filter, brigade); -} - -static apr_status_t h2_filter_read_response(ap_filter_t* filter, - apr_bucket_brigade* bb) -{ - h2_task *task = h2_ctx_cget_task(filter->c); - AP_DEBUG_ASSERT(task); - if (!task->output.from_h1) { - return APR_ECONNABORTED; - } - return h2_from_h1_read_response(task->output.from_h1, filter, bb); + return ap_pass_brigade(f->next, bb); } /******************************************************************************* * task things ******************************************************************************/ -void h2_task_set_response(h2_task *task, h2_response *response) -{ - AP_DEBUG_ASSERT(response); - AP_DEBUG_ASSERT(!task->response); - /* we used to clone the response into out own pool. But - * we have much tighter control over the EOR bucket nowadays, - * so just use the instance given */ - task->response = response; - if (response->rst_error) { - h2_task_rst(task, response->rst_error); - } -} - - int h2_task_can_redo(h2_task *task) { - if (task->submitted - || (task->input.beam && h2_beam_was_received(task->input.beam)) - || !task->request) { + if (task->input.beam && h2_beam_was_received(task->input.beam)) { /* cannot repeat that. */ return 0; } @@ -540,7 +426,6 @@ int h2_task_can_redo(h2_task *task) { void h2_task_redo(h2_task *task) { - task->response = NULL; task->rst_error = 0; } @@ -548,9 +433,9 @@ void h2_task_rst(h2_task *task, int erro { task->rst_error = error; if (task->input.beam) { - h2_beam_abort(task->input.beam); + h2_beam_leave(task->input.beam); } - if (task->output.beam) { + if (!task->worker_done) { h2_beam_abort(task->output.beam); } if (task->c) { @@ -582,15 +467,18 @@ void h2_task_register_hooks(void) ap_hook_process_connection(h2_task_process_conn, NULL, NULL, APR_HOOK_FIRST); - ap_register_output_filter("H2_RESPONSE", h2_response_output_filter, - NULL, AP_FTYPE_PROTOCOL); - ap_register_input_filter("H2_TO_H1", h2_filter_stream_input, + ap_register_input_filter("H2_SLAVE_IN", h2_filter_slave_in, NULL, AP_FTYPE_NETWORK); - ap_register_output_filter("H1_TO_H2", h2_filter_stream_output, + ap_register_output_filter("H2_SLAVE_OUT", h2_filter_slave_output, + NULL, AP_FTYPE_NETWORK); + ap_register_output_filter("H2_PARSE_H1", h2_filter_parse_h1, NULL, AP_FTYPE_NETWORK); - ap_register_output_filter("H1_TO_H2_RESP", h2_filter_read_response, + + ap_register_input_filter("H2_REQUEST", h2_filter_request_in, + NULL, AP_FTYPE_PROTOCOL); + ap_register_output_filter("H2_RESPONSE", h2_filter_headers_out, NULL, AP_FTYPE_PROTOCOL); - ap_register_output_filter("H2_TRAILERS", h2_response_trailers_filter, + ap_register_output_filter("H2_TRAILERS_OUT", h2_filter_trailers_out, NULL, AP_FTYPE_PROTOCOL); } @@ -616,53 +504,51 @@ static int h2_task_pre_conn(conn_rec* c, if (h2_ctx_is_task(ctx)) { ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, c, "h2_h2, pre_connection, found stream task"); - - /* Add our own, network level in- and output filters. - */ - ap_add_input_filter("H2_TO_H1", NULL, NULL, c); - ap_add_output_filter("H1_TO_H2", NULL, NULL, c); + ap_add_input_filter("H2_SLAVE_IN", NULL, NULL, c); + ap_add_output_filter("H2_PARSE_H1", NULL, NULL, c); + ap_add_output_filter("H2_SLAVE_OUT", NULL, NULL, c); } return OK; } -h2_task *h2_task_create(conn_rec *c, const h2_request *req, - h2_bucket_beam *input, h2_mplx *mplx) +h2_task *h2_task_create(conn_rec *slave, int stream_id, + const h2_request *req, h2_mplx *m, + h2_bucket_beam *input, + apr_interval_time_t timeout, + apr_size_t output_max_mem) { apr_pool_t *pool; h2_task *task; - apr_pool_create(&pool, c->pool); + ap_assert(slave); + ap_assert(req); + + apr_pool_create(&pool, slave->pool); task = apr_pcalloc(pool, sizeof(h2_task)); if (task == NULL) { - ap_log_cerror(APLOG_MARK, APLOG_ERR, APR_ENOMEM, c, - APLOGNO(02941) "h2_task(%ld-%d): create stream task", - c->id, req->id); return NULL; } - - task->id = apr_psprintf(pool, "%ld-%d", c->id, req->id); - task->stream_id = req->id; - task->c = c; - task->mplx = mplx; - task->c->keepalives = mplx->c->keepalives; + task->id = "000"; + task->stream_id = stream_id; + task->c = slave; + task->mplx = m; task->pool = pool; task->request = req; - task->ser_headers = req->serialize; - task->blocking = 1; + task->timeout = timeout; task->input.beam = input; - - apr_thread_cond_create(&task->cond, pool); + task->output.max_buffer = output_max_mem; - h2_ctx_create_for(c, task); return task; } void h2_task_destroy(h2_task *task) { if (task->output.beam) { + h2_beam_log(task->output.beam, task->c, APLOG_TRACE2, "task_destroy"); h2_beam_destroy(task->output.beam); task->output.beam = NULL; } + if (task->eor) { apr_bucket_destroy(task->eor); } @@ -671,57 +557,91 @@ void h2_task_destroy(h2_task *task) } } -void h2_task_set_io_blocking(h2_task *task, int blocking) -{ - task->blocking = blocking; -} - -apr_status_t h2_task_do(h2_task *task, apr_thread_t *thread) +apr_status_t h2_task_do(h2_task *task, apr_thread_t *thread, int worker_id) { - AP_DEBUG_ASSERT(task); + conn_rec *c; - task->input.block = APR_BLOCK_READ; - task->input.chunked = task->request->chunked; - task->input.eos = !task->request->body; - if (task->input.eos && !task->input.chunked && !task->ser_headers) { - /* We do not serialize/chunk and have eos already, no need to - * create a bucket brigade. */ - task->input.bb = NULL; - task->input.eos_written = 1; - } - else { - task->input.bb = apr_brigade_create(task->pool, task->c->bucket_alloc); - if (task->ser_headers) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, task->c, - "h2_task(%s): serialize request %s %s", - task->id, task->request->method, task->request->path); - apr_brigade_printf(task->input.bb, NULL, - NULL, "%s %s HTTP/1.1\r\n", - task->request->method, task->request->path); - apr_table_do(input_ser_header, task, task->request->headers, NULL); - apr_brigade_puts(task->input.bb, NULL, NULL, "\r\n"); + ap_assert(task); + c = task->c; + task->worker_started = 1; + task->started_at = apr_time_now(); + + if (c->master) { + /* Each conn_rec->id is supposed to be unique at a point in time. Since + * some modules (and maybe external code) uses this id as an identifier + * for the request_rec they handle, it needs to be unique for slave + * connections also. + * The connection id is generated by the MPM and most MPMs use the formula + * id := (child_num * max_threads) + thread_num + * which means that there is a maximum id of about + * idmax := max_child_count * max_threads + * If we assume 2024 child processes with 2048 threads max, we get + * idmax ~= 2024 * 2048 = 2 ** 22 + * On 32 bit systems, we have not much space left, but on 64 bit systems + * (and higher?) we can use the upper 32 bits without fear of collision. + * 32 bits is just what we need, since a connection can only handle so + * many streams. + */ + int slave_id, free_bits; + + task->id = apr_psprintf(task->pool, "%ld-%d", c->master->id, + task->stream_id); + if (sizeof(unsigned long) >= 8) { + free_bits = 32; + slave_id = task->stream_id; } - if (task->input.eos) { - input_append_eos(task, NULL); + else { + /* Assume we have a more limited number of threads/processes + * and h2 workers on a 32-bit system. Use the worker instead + * of the stream id. */ + free_bits = 8; + slave_id = worker_id; } + task->c->id = (c->master->id << free_bits)^slave_id; + c->keepalive = AP_CONN_KEEPALIVE; + } + + h2_beam_create(&task->output.beam, c->pool, task->stream_id, "output", + H2_BEAM_OWNER_SEND, 0, task->timeout); + if (!task->output.beam) { + return APR_ENOMEM; } - task->output.from_h1 = h2_from_h1_create(task->stream_id, task->pool); + h2_beam_buffer_size_set(task->output.beam, task->output.max_buffer); + h2_beam_send_from(task->output.beam, task->pool); - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, task->c, + h2_ctx_create_for(c, task); + apr_table_setn(c->notes, H2_TASK_ID_NOTE, task->id); + + h2_slave_run_pre_connection(c, ap_get_conn_socket(c)); + + task->input.bb = apr_brigade_create(task->pool, c->bucket_alloc); + if (task->request->serialize) { + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, + "h2_task(%s): serialize request %s %s", + task->id, task->request->method, task->request->path); + apr_brigade_printf(task->input.bb, NULL, + NULL, "%s %s HTTP/1.1\r\n", + task->request->method, task->request->path); + apr_table_do(input_ser_header, task, task->request->headers, NULL); + apr_brigade_puts(task->input.bb, NULL, NULL, "\r\n"); + } + + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, "h2_task(%s): process connection", task->id); + task->c->current_thread = thread; - ap_run_process_connection(task->c); + ap_run_process_connection(c); if (task->frozen) { - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, task->c, + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, "h2_task(%s): process_conn returned frozen task", task->id); /* cleanup delayed */ return APR_EAGAIN; } else { - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, task->c, + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, "h2_task(%s): processing done", task->id); return output_finish(task); } @@ -737,6 +657,15 @@ static apr_status_t h2_task_process_requ "h2_task(%s): create request_rec", task->id); r = h2_request_create_rec(req, c); if (r && (r->status == HTTP_OK)) { + /* set timeouts for virtual host of request */ + if (task->timeout != r->server->timeout) { + task->timeout = r->server->timeout; + h2_beam_timeout_set(task->output.beam, task->timeout); + if (task->input.beam) { + h2_beam_timeout_set(task->input.beam, task->timeout); + } + } + ap_update_child_status(c->sbh, SERVER_BUSY_WRITE, r); if (cs) { @@ -744,16 +673,19 @@ static apr_status_t h2_task_process_requ } ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, "h2_task(%s): start process_request", task->id); + ap_process_request(r); if (task->frozen) { ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, "h2_task(%s): process_request frozen", task->id); } - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, - "h2_task(%s): process_request done", task->id); + else { + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, + "h2_task(%s): process_request done", task->id); + } /* After the call to ap_process_request, the - * request pool will have been deleted. We set + * request pool may have been deleted. We set * r=NULL here to ensure that any dereference * of r that might be added later in this function * will result in a segfault immediately instead @@ -786,7 +718,7 @@ static int h2_task_process_conn(conn_rec ctx = h2_ctx_get(c, 0); if (h2_ctx_is_task(ctx)) { - if (!ctx->task->ser_headers) { + if (!ctx->task->request->serialize) { ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, "h2_h2, processing request directly"); h2_task_process_request(ctx->task, c); @@ -819,11 +751,11 @@ apr_status_t h2_task_thaw(h2_task *task) ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, task->c, APLOGNO(03407) "h2_task(%s), thawed", task->id); } - task->detached = 1; + task->thawed = 1; return APR_SUCCESS; } -int h2_task_is_detached(h2_task *task) +int h2_task_has_thawed(h2_task *task) { - return task->detached; + return task->thawed; } diff -up --new-file httpd-2.4.23/modules/http2/h2_task.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_task.h --- httpd-2.4.23/modules/http2/h2_task.h 2016-06-07 13:29:51.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_task.h 2017-03-31 21:41:01.000000000 +0200 @@ -37,14 +37,14 @@ * of our own to disble those. */ -struct apr_thread_cond_t; struct h2_bucket_beam; struct h2_conn; struct h2_mplx; struct h2_task; struct h2_req_engine; struct h2_request; -struct h2_response; +struct h2_response_parser; +struct h2_stream; struct h2_worker; typedef struct h2_task h2_task; @@ -56,37 +56,33 @@ struct h2_task { apr_pool_t *pool; const struct h2_request *request; - struct h2_response *response; + apr_interval_time_t timeout; + int rst_error; /* h2 related stream abort error */ struct { struct h2_bucket_beam *beam; - apr_bucket_brigade *bb; - apr_bucket_brigade *tmp; - apr_read_type_e block; - unsigned int chunked : 1; unsigned int eos : 1; - unsigned int eos_written : 1; + apr_bucket_brigade *bb; + apr_bucket_brigade *bbchunk; + apr_off_t chunked_total; } input; struct { struct h2_bucket_beam *beam; - struct h2_from_h1 *from_h1; - unsigned int response_open : 1; - apr_off_t written; + unsigned int opened : 1; + unsigned int sent_response : 1; + unsigned int copy_files : 1; + struct h2_response_parser *rparser; apr_bucket_brigade *bb; + apr_size_t max_buffer; } output; struct h2_mplx *mplx; - struct apr_thread_cond_t *cond; - int rst_error; /* h2 related stream abort error */ unsigned int filters_set : 1; - unsigned int ser_headers : 1; unsigned int frozen : 1; - unsigned int blocking : 1; - unsigned int detached : 1; - unsigned int submitted : 1; /* response has been submitted to client */ - unsigned int worker_started : 1; /* h2_worker started processing for this io */ - unsigned int worker_done : 1; /* h2_worker finished for this io */ + unsigned int thawed : 1; + unsigned int worker_started : 1; /* h2_worker started processing */ + unsigned int worker_done : 1; /* h2_worker finished */ apr_time_t started_at; /* when processing started */ apr_time_t done_at; /* when processing was done */ @@ -94,17 +90,17 @@ struct h2_task { struct h2_req_engine *engine; /* engine hosted by this task */ struct h2_req_engine *assigned; /* engine that task has been assigned to */ - request_rec *r; /* request being processed in this task */ }; -h2_task *h2_task_create(conn_rec *c, const struct h2_request *req, - struct h2_bucket_beam *input, struct h2_mplx *mplx); +h2_task *h2_task_create(conn_rec *slave, int stream_id, + const h2_request *req, struct h2_mplx *m, + struct h2_bucket_beam *input, + apr_interval_time_t timeout, + apr_size_t output_max_mem); void h2_task_destroy(h2_task *task); -apr_status_t h2_task_do(h2_task *task, apr_thread_t *thread); - -void h2_task_set_response(h2_task *task, struct h2_response *response); +apr_status_t h2_task_do(h2_task *task, apr_thread_t *thread, int worker_id); void h2_task_redo(h2_task *task); int h2_task_can_redo(h2_task *task); @@ -125,8 +121,6 @@ extern APR_OPTIONAL_FN_TYPE(ap_logio_add apr_status_t h2_task_freeze(h2_task *task); apr_status_t h2_task_thaw(h2_task *task); -int h2_task_is_detached(h2_task *task); - -void h2_task_set_io_blocking(h2_task *task, int blocking); +int h2_task_has_thawed(h2_task *task); #endif /* defined(__mod_h2__h2_task__) */ diff -up --new-file httpd-2.4.23/modules/http2/h2_util.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_util.c --- httpd-2.4.23/modules/http2/h2_util.c 2016-06-14 10:51:31.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_util.c 2017-10-13 10:37:45.000000000 +0200 @@ -15,6 +15,8 @@ #include <assert.h> #include <apr_strings.h> +#include <apr_thread_mutex.h> +#include <apr_thread_cond.h> #include <httpd.h> #include <http_core.h> @@ -27,7 +29,7 @@ #include "h2_util.h" /* h2_log2(n) iff n is a power of 2 */ -unsigned char h2_log2(apr_uint32_t n) +unsigned char h2_log2(int n) { int lz = 0; if (!n) { @@ -110,6 +112,8 @@ void h2_util_camel_case_header(char *s, } } +/* base64 url encoding ****************************************************************************/ + static const int BASE64URL_UINT6[] = { /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0 */ @@ -172,6 +176,7 @@ apr_size_t h2_util_base64url_decode(cons n = ((BASE64URL_UINT6[ e[mlen+0] ] << 18) + (BASE64URL_UINT6[ e[mlen+1] ] << 12)); *d++ = n >> 16; + remain = 1; break; case 3: n = ((BASE64URL_UINT6[ e[mlen+0] ] << 18) + @@ -179,6 +184,7 @@ apr_size_t h2_util_base64url_decode(cons (BASE64URL_UINT6[ e[mlen+2] ] << 6)); *d++ = n >> 16; *d++ = n >> 8 & 0xffu; + remain = 2; break; default: /* do nothing */ break; @@ -187,78 +193,35 @@ apr_size_t h2_util_base64url_decode(cons } const char *h2_util_base64url_encode(const char *data, - apr_size_t len, apr_pool_t *pool) + apr_size_t dlen, apr_pool_t *pool) { - apr_size_t mlen = ((len+2)/3)*3; - apr_size_t slen = (mlen/3)*4; - apr_size_t i; + long i, len = (int)dlen; + apr_size_t slen = ((dlen+2)/3)*4 + 1; /* 0 terminated */ const unsigned char *udata = (const unsigned char*)data; - char *enc, *p = apr_pcalloc(pool, slen+1); /* 0 terminated */ + char *enc, *p = apr_pcalloc(pool, slen); enc = p; - for (i = 0; i < mlen; i+= 3) { + for (i = 0; i < len-2; i+= 3) { *p++ = BASE64URL_CHARS[ (udata[i] >> 2) & 0x3fu ]; - *p++ = BASE64URL_CHARS[ ((udata[i] << 4) + - ((i+1 < len)? (udata[i+1] >> 4) : 0)) & 0x3fu ]; - *p++ = BASE64URL_CHARS[ ((udata[i+1] << 2) + - ((i+2 < len)? (udata[i+2] >> 6) : 0)) & 0x3fu ]; - if (i+2 < len) { - *p++ = BASE64URL_CHARS[ udata[i+2] & 0x3fu ]; - } + *p++ = BASE64URL_CHARS[ ((udata[i] << 4) + (udata[i+1] >> 4)) & 0x3fu ]; + *p++ = BASE64URL_CHARS[ ((udata[i+1] << 2) + (udata[i+2] >> 6)) & 0x3fu ]; + *p++ = BASE64URL_CHARS[ udata[i+2] & 0x3fu ]; } - return enc; -} - -int h2_util_contains_token(apr_pool_t *pool, const char *s, const char *token) -{ - char *c; - if (s) { - if (!apr_strnatcasecmp(s, token)) { /* the simple life */ - return 1; - } - - for (c = ap_get_token(pool, &s, 0); c && *c; - c = *s? ap_get_token(pool, &s, 0) : NULL) { - if (!apr_strnatcasecmp(c, token)) { /* seeing the token? */ - return 1; - } - while (*s++ == ';') { /* skip parameters */ - ap_get_token(pool, &s, 0); - } - if (*s++ != ',') { /* need comma separation */ - return 0; - } + if (i < len) { + *p++ = BASE64URL_CHARS[ (udata[i] >> 2) & 0x3fu ]; + if (i == (len - 1)) { + *p++ = BASE64URL_CHARS[ (udata[i] << 4) & 0x3fu ]; } - } - return 0; -} - -const char *h2_util_first_token_match(apr_pool_t *pool, const char *s, - const char *tokens[], apr_size_t len) -{ - char *c; - apr_size_t i; - if (s && *s) { - for (c = ap_get_token(pool, &s, 0); c && *c; - c = *s? ap_get_token(pool, &s, 0) : NULL) { - for (i = 0; i < len; ++i) { - if (!apr_strnatcasecmp(c, tokens[i])) { - return tokens[i]; - } - } - while (*s++ == ';') { /* skip parameters */ - ap_get_token(pool, &s, 0); - } - if (*s++ != ',') { /* need comma separation */ - return 0; - } + else { + *p++ = BASE64URL_CHARS[ ((udata[i] << 4) + (udata[i+1] >> 4)) & 0x3fu ]; + *p++ = BASE64URL_CHARS[ (udata[i+1] << 2) & 0x3fu ]; } } - return NULL; + *p++ = '\0'; + return enc; } - /******************************************************************************* * ihash - hash for structs with int identifier ******************************************************************************/ @@ -370,39 +333,6 @@ size_t h2_ihash_shift(h2_ihash_t *ih, vo return ctx.len; } -typedef struct { - h2_ihash_t *ih; - int *buffer; - size_t max; - size_t len; -} icollect_ctx; - -static int icollect_iter(void *x, void *val) -{ - icollect_ctx *ctx = x; - if (ctx->len < ctx->max) { - ctx->buffer[ctx->len++] = *((int*)((char *)val + ctx->ih->ioff)); - return 1; - } - return 0; -} - -size_t h2_ihash_ishift(h2_ihash_t *ih, int *buffer, size_t max) -{ - icollect_ctx ctx; - size_t i; - - ctx.ih = ih; - ctx.buffer = buffer; - ctx.max = max; - ctx.len = 0; - h2_ihash_iter(ih, icollect_iter, &ctx); - for (i = 0; i < ctx.len; ++i) { - h2_ihash_remove(ih, buffer[i]); - } - return ctx.len; -} - /******************************************************************************* * iqueue - sorted list of int ******************************************************************************/ @@ -436,14 +366,16 @@ int h2_iq_count(h2_iqueue *q) } -void h2_iq_add(h2_iqueue *q, int sid, h2_iq_cmp *cmp, void *ctx) +int h2_iq_add(h2_iqueue *q, int sid, h2_iq_cmp *cmp, void *ctx) { int i; + if (h2_iq_contains(q, sid)) { + return 0; + } if (q->nelts >= q->nalloc) { iq_grow(q, q->nalloc * 2); } - i = (q->head + q->nelts) % q->nalloc; q->elts[i] = sid; ++q->nelts; @@ -452,6 +384,12 @@ void h2_iq_add(h2_iqueue *q, int sid, h2 /* bubble it to the front of the queue */ iq_bubble_up(q, i, q->head, cmp, ctx); } + return 1; +} + +int h2_iq_append(h2_iqueue *q, int sid) +{ + return h2_iq_add(q, sid, NULL, NULL); } int h2_iq_remove(h2_iqueue *q, int sid) @@ -522,6 +460,18 @@ int h2_iq_shift(h2_iqueue *q) return sid; } +size_t h2_iq_mshift(h2_iqueue *q, int *pint, size_t max) +{ + int i; + for (i = 0; i < max; ++i) { + pint[i] = h2_iq_shift(q); + if (pint[i] == 0) { + break; + } + } + return i; +} + static void iq_grow(h2_iqueue *q, int nlen) { if (nlen > q->nalloc) { @@ -573,6 +523,633 @@ static int iq_bubble_down(h2_iqueue *q, return i; } +int h2_iq_contains(h2_iqueue *q, int sid) +{ + int i; + for (i = 0; i < q->nelts; ++i) { + if (sid == q->elts[(q->head + i) % q->nalloc]) { + return 1; + } + } + return 0; +} + +/******************************************************************************* + * FIFO queue + ******************************************************************************/ + +struct h2_fifo { + void **elems; + int nelems; + int set; + int head; + int count; + int aborted; + apr_thread_mutex_t *lock; + apr_thread_cond_t *not_empty; + apr_thread_cond_t *not_full; +}; + +static int nth_index(h2_fifo *fifo, int n) +{ + return (fifo->head + n) % fifo->nelems; +} + +static apr_status_t fifo_destroy(void *data) +{ + h2_fifo *fifo = data; + + apr_thread_cond_destroy(fifo->not_empty); + apr_thread_cond_destroy(fifo->not_full); + apr_thread_mutex_destroy(fifo->lock); + + return APR_SUCCESS; +} + +static int index_of(h2_fifo *fifo, void *elem) +{ + int i; + + for (i = 0; i < fifo->count; ++i) { + if (elem == fifo->elems[nth_index(fifo, i)]) { + return i; + } + } + return -1; +} + +static apr_status_t create_int(h2_fifo **pfifo, apr_pool_t *pool, + int capacity, int as_set) +{ + apr_status_t rv; + h2_fifo *fifo; + + fifo = apr_pcalloc(pool, sizeof(*fifo)); + if (fifo == NULL) { + return APR_ENOMEM; + } + + rv = apr_thread_mutex_create(&fifo->lock, + APR_THREAD_MUTEX_UNNESTED, pool); + if (rv != APR_SUCCESS) { + return rv; + } + + rv = apr_thread_cond_create(&fifo->not_empty, pool); + if (rv != APR_SUCCESS) { + return rv; + } + + rv = apr_thread_cond_create(&fifo->not_full, pool); + if (rv != APR_SUCCESS) { + return rv; + } + + fifo->elems = apr_pcalloc(pool, capacity * sizeof(void*)); + if (fifo->elems == NULL) { + return APR_ENOMEM; + } + fifo->nelems = capacity; + fifo->set = as_set; + + *pfifo = fifo; + apr_pool_cleanup_register(pool, fifo, fifo_destroy, apr_pool_cleanup_null); + + return APR_SUCCESS; +} + +apr_status_t h2_fifo_create(h2_fifo **pfifo, apr_pool_t *pool, int capacity) +{ + return create_int(pfifo, pool, capacity, 0); +} + +apr_status_t h2_fifo_set_create(h2_fifo **pfifo, apr_pool_t *pool, int capacity) +{ + return create_int(pfifo, pool, capacity, 1); +} + +apr_status_t h2_fifo_term(h2_fifo *fifo) +{ + apr_status_t rv; + if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) { + fifo->aborted = 1; + apr_thread_mutex_unlock(fifo->lock); + } + return rv; +} + +apr_status_t h2_fifo_interrupt(h2_fifo *fifo) +{ + apr_status_t rv; + if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) { + apr_thread_cond_broadcast(fifo->not_empty); + apr_thread_cond_broadcast(fifo->not_full); + apr_thread_mutex_unlock(fifo->lock); + } + return rv; +} + +int h2_fifo_count(h2_fifo *fifo) +{ + return fifo->count; +} + +static apr_status_t check_not_empty(h2_fifo *fifo, int block) +{ + while (fifo->count == 0) { + if (!block) { + return APR_EAGAIN; + } + if (fifo->aborted) { + return APR_EOF; + } + apr_thread_cond_wait(fifo->not_empty, fifo->lock); + } + return APR_SUCCESS; +} + +static apr_status_t fifo_push_int(h2_fifo *fifo, void *elem, int block) +{ + if (fifo->aborted) { + return APR_EOF; + } + + if (fifo->set && index_of(fifo, elem) >= 0) { + /* set mode, elem already member */ + return APR_EEXIST; + } + else if (fifo->count == fifo->nelems) { + if (block) { + while (fifo->count == fifo->nelems) { + if (fifo->aborted) { + return APR_EOF; + } + apr_thread_cond_wait(fifo->not_full, fifo->lock); + } + } + else { + return APR_EAGAIN; + } + } + + ap_assert(fifo->count < fifo->nelems); + fifo->elems[nth_index(fifo, fifo->count)] = elem; + ++fifo->count; + if (fifo->count == 1) { + apr_thread_cond_broadcast(fifo->not_empty); + } + return APR_SUCCESS; +} + +static apr_status_t fifo_push(h2_fifo *fifo, void *elem, int block) +{ + apr_status_t rv; + + if (fifo->aborted) { + return APR_EOF; + } + + if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) { + rv = fifo_push_int(fifo, elem, block); + apr_thread_mutex_unlock(fifo->lock); + } + return rv; +} + +apr_status_t h2_fifo_push(h2_fifo *fifo, void *elem) +{ + return fifo_push(fifo, elem, 1); +} + +apr_status_t h2_fifo_try_push(h2_fifo *fifo, void *elem) +{ + return fifo_push(fifo, elem, 0); +} + +static apr_status_t pull_head(h2_fifo *fifo, void **pelem, int block) +{ + apr_status_t rv; + + if ((rv = check_not_empty(fifo, block)) != APR_SUCCESS) { + *pelem = NULL; + return rv; + } + *pelem = fifo->elems[fifo->head]; + --fifo->count; + if (fifo->count > 0) { + fifo->head = nth_index(fifo, 1); + if (fifo->count+1 == fifo->nelems) { + apr_thread_cond_broadcast(fifo->not_full); + } + } + return APR_SUCCESS; +} + +static apr_status_t fifo_pull(h2_fifo *fifo, void **pelem, int block) +{ + apr_status_t rv; + + if (fifo->aborted) { + return APR_EOF; + } + + if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) { + rv = pull_head(fifo, pelem, block); + apr_thread_mutex_unlock(fifo->lock); + } + return rv; +} + +apr_status_t h2_fifo_pull(h2_fifo *fifo, void **pelem) +{ + return fifo_pull(fifo, pelem, 1); +} + +apr_status_t h2_fifo_try_pull(h2_fifo *fifo, void **pelem) +{ + return fifo_pull(fifo, pelem, 0); +} + +static apr_status_t fifo_peek(h2_fifo *fifo, h2_fifo_peek_fn *fn, void *ctx, int block) +{ + apr_status_t rv; + void *elem; + + if (fifo->aborted) { + return APR_EOF; + } + + if (APR_SUCCESS == (rv = apr_thread_mutex_lock(fifo->lock))) { + if (APR_SUCCESS == (rv = pull_head(fifo, &elem, block))) { + switch (fn(elem, ctx)) { + case H2_FIFO_OP_PULL: + break; + case H2_FIFO_OP_REPUSH: + rv = fifo_push_int(fifo, elem, block); + break; + } + } + apr_thread_mutex_unlock(fifo->lock); + } + return rv; +} + +apr_status_t h2_fifo_peek(h2_fifo *fifo, h2_fifo_peek_fn *fn, void *ctx) +{ + return fifo_peek(fifo, fn, ctx, 1); +} + +apr_status_t h2_fifo_try_peek(h2_fifo *fifo, h2_fifo_peek_fn *fn, void *ctx) +{ + return fifo_peek(fifo, fn, ctx, 0); +} + +apr_status_t h2_fifo_remove(h2_fifo *fifo, void *elem) +{ + apr_status_t rv; + + if (fifo->aborted) { + return APR_EOF; + } + + if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) { + int i, rc; + void *e; + + rc = 0; + for (i = 0; i < fifo->count; ++i) { + e = fifo->elems[nth_index(fifo, i)]; + if (e == elem) { + ++rc; + } + else if (rc) { + fifo->elems[nth_index(fifo, i-rc)] = e; + } + } + if (rc) { + fifo->count -= rc; + if (fifo->count + rc == fifo->nelems) { + apr_thread_cond_broadcast(fifo->not_full); + } + rv = APR_SUCCESS; + } + else { + rv = APR_EAGAIN; + } + + apr_thread_mutex_unlock(fifo->lock); + } + return rv; +} + +/******************************************************************************* + * FIFO int queue + ******************************************************************************/ + +struct h2_ififo { + int *elems; + int nelems; + int set; + int head; + int count; + int aborted; + apr_thread_mutex_t *lock; + apr_thread_cond_t *not_empty; + apr_thread_cond_t *not_full; +}; + +static int inth_index(h2_ififo *fifo, int n) +{ + return (fifo->head + n) % fifo->nelems; +} + +static apr_status_t ififo_destroy(void *data) +{ + h2_ififo *fifo = data; + + apr_thread_cond_destroy(fifo->not_empty); + apr_thread_cond_destroy(fifo->not_full); + apr_thread_mutex_destroy(fifo->lock); + + return APR_SUCCESS; +} + +static int iindex_of(h2_ififo *fifo, int id) +{ + int i; + + for (i = 0; i < fifo->count; ++i) { + if (id == fifo->elems[inth_index(fifo, i)]) { + return i; + } + } + return -1; +} + +static apr_status_t icreate_int(h2_ififo **pfifo, apr_pool_t *pool, + int capacity, int as_set) +{ + apr_status_t rv; + h2_ififo *fifo; + + fifo = apr_pcalloc(pool, sizeof(*fifo)); + if (fifo == NULL) { + return APR_ENOMEM; + } + + rv = apr_thread_mutex_create(&fifo->lock, + APR_THREAD_MUTEX_UNNESTED, pool); + if (rv != APR_SUCCESS) { + return rv; + } + + rv = apr_thread_cond_create(&fifo->not_empty, pool); + if (rv != APR_SUCCESS) { + return rv; + } + + rv = apr_thread_cond_create(&fifo->not_full, pool); + if (rv != APR_SUCCESS) { + return rv; + } + + fifo->elems = apr_pcalloc(pool, capacity * sizeof(int)); + if (fifo->elems == NULL) { + return APR_ENOMEM; + } + fifo->nelems = capacity; + fifo->set = as_set; + + *pfifo = fifo; + apr_pool_cleanup_register(pool, fifo, ififo_destroy, apr_pool_cleanup_null); + + return APR_SUCCESS; +} + +apr_status_t h2_ififo_create(h2_ififo **pfifo, apr_pool_t *pool, int capacity) +{ + return icreate_int(pfifo, pool, capacity, 0); +} + +apr_status_t h2_ififo_set_create(h2_ififo **pfifo, apr_pool_t *pool, int capacity) +{ + return icreate_int(pfifo, pool, capacity, 1); +} + +apr_status_t h2_ififo_term(h2_ififo *fifo) +{ + apr_status_t rv; + if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) { + fifo->aborted = 1; + apr_thread_mutex_unlock(fifo->lock); + } + return rv; +} + +apr_status_t h2_ififo_interrupt(h2_ififo *fifo) +{ + apr_status_t rv; + if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) { + apr_thread_cond_broadcast(fifo->not_empty); + apr_thread_cond_broadcast(fifo->not_full); + apr_thread_mutex_unlock(fifo->lock); + } + return rv; +} + +int h2_ififo_count(h2_ififo *fifo) +{ + return fifo->count; +} + +static apr_status_t icheck_not_empty(h2_ififo *fifo, int block) +{ + while (fifo->count == 0) { + if (!block) { + return APR_EAGAIN; + } + if (fifo->aborted) { + return APR_EOF; + } + apr_thread_cond_wait(fifo->not_empty, fifo->lock); + } + return APR_SUCCESS; +} + +static apr_status_t ififo_push_int(h2_ififo *fifo, int id, int block) +{ + if (fifo->aborted) { + return APR_EOF; + } + + if (fifo->set && iindex_of(fifo, id) >= 0) { + /* set mode, elem already member */ + return APR_EEXIST; + } + else if (fifo->count == fifo->nelems) { + if (block) { + while (fifo->count == fifo->nelems) { + if (fifo->aborted) { + return APR_EOF; + } + apr_thread_cond_wait(fifo->not_full, fifo->lock); + } + } + else { + return APR_EAGAIN; + } + } + + ap_assert(fifo->count < fifo->nelems); + fifo->elems[inth_index(fifo, fifo->count)] = id; + ++fifo->count; + if (fifo->count == 1) { + apr_thread_cond_broadcast(fifo->not_empty); + } + return APR_SUCCESS; +} + +static apr_status_t ififo_push(h2_ififo *fifo, int id, int block) +{ + apr_status_t rv; + + if (fifo->aborted) { + return APR_EOF; + } + + if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) { + rv = ififo_push_int(fifo, id, block); + apr_thread_mutex_unlock(fifo->lock); + } + return rv; +} + +apr_status_t h2_ififo_push(h2_ififo *fifo, int id) +{ + return ififo_push(fifo, id, 1); +} + +apr_status_t h2_ififo_try_push(h2_ififo *fifo, int id) +{ + return ififo_push(fifo, id, 0); +} + +static apr_status_t ipull_head(h2_ififo *fifo, int *pi, int block) +{ + apr_status_t rv; + + if ((rv = icheck_not_empty(fifo, block)) != APR_SUCCESS) { + *pi = 0; + return rv; + } + *pi = fifo->elems[fifo->head]; + --fifo->count; + if (fifo->count > 0) { + fifo->head = inth_index(fifo, 1); + if (fifo->count+1 == fifo->nelems) { + apr_thread_cond_broadcast(fifo->not_full); + } + } + return APR_SUCCESS; +} + +static apr_status_t ififo_pull(h2_ififo *fifo, int *pi, int block) +{ + apr_status_t rv; + + if (fifo->aborted) { + return APR_EOF; + } + + if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) { + rv = ipull_head(fifo, pi, block); + apr_thread_mutex_unlock(fifo->lock); + } + return rv; +} + +apr_status_t h2_ififo_pull(h2_ififo *fifo, int *pi) +{ + return ififo_pull(fifo, pi, 1); +} + +apr_status_t h2_ififo_try_pull(h2_ififo *fifo, int *pi) +{ + return ififo_pull(fifo, pi, 0); +} + +static apr_status_t ififo_peek(h2_ififo *fifo, h2_ififo_peek_fn *fn, void *ctx, int block) +{ + apr_status_t rv; + int id; + + if (fifo->aborted) { + return APR_EOF; + } + + if (APR_SUCCESS == (rv = apr_thread_mutex_lock(fifo->lock))) { + if (APR_SUCCESS == (rv = ipull_head(fifo, &id, block))) { + switch (fn(id, ctx)) { + case H2_FIFO_OP_PULL: + break; + case H2_FIFO_OP_REPUSH: + rv = ififo_push_int(fifo, id, block); + break; + } + } + apr_thread_mutex_unlock(fifo->lock); + } + return rv; +} + +apr_status_t h2_ififo_peek(h2_ififo *fifo, h2_ififo_peek_fn *fn, void *ctx) +{ + return ififo_peek(fifo, fn, ctx, 1); +} + +apr_status_t h2_ififo_try_peek(h2_ififo *fifo, h2_ififo_peek_fn *fn, void *ctx) +{ + return ififo_peek(fifo, fn, ctx, 0); +} + +apr_status_t h2_ififo_remove(h2_ififo *fifo, int id) +{ + apr_status_t rv; + + if (fifo->aborted) { + return APR_EOF; + } + + if ((rv = apr_thread_mutex_lock(fifo->lock)) == APR_SUCCESS) { + int i, rc; + int e; + + rc = 0; + for (i = 0; i < fifo->count; ++i) { + e = fifo->elems[inth_index(fifo, i)]; + if (e == id) { + ++rc; + } + else if (rc) { + fifo->elems[inth_index(fifo, i-rc)] = e; + } + } + if (rc) { + fifo->count -= rc; + if (fifo->count + rc == fifo->nelems) { + apr_thread_cond_broadcast(fifo->not_full); + } + rv = APR_SUCCESS; + } + else { + rv = APR_EAGAIN; + } + + apr_thread_mutex_unlock(fifo->lock); + } + return rv; +} + /******************************************************************************* * h2_util for apt_table_t ******************************************************************************/ @@ -618,7 +1195,7 @@ static apr_status_t last_not_included(ap { apr_bucket *b; apr_status_t status = APR_SUCCESS; - int files_allowed = pfile_buckets_allowed? *pfile_buckets_allowed : 0; + int files_allowed = pfile_buckets_allowed? (int)*pfile_buckets_allowed : 0; if (maxlen >= 0) { /* Find the bucket, up to which we reach maxlen/mem bytes */ @@ -653,8 +1230,8 @@ static apr_status_t last_not_included(ap * unless we do not move the file buckets */ --files_allowed; } - else if (maxlen < b->length) { - apr_bucket_split(b, maxlen); + else if (maxlen < (apr_off_t)b->length) { + apr_bucket_split(b, (apr_size_t)maxlen); maxlen = 0; } else { @@ -671,17 +1248,16 @@ apr_status_t h2_brigade_concat_length(ap apr_bucket_brigade *src, apr_off_t length) { - apr_bucket *b, *next; + apr_bucket *b; apr_off_t remain = length; apr_status_t status = APR_SUCCESS; - for (b = APR_BRIGADE_FIRST(src); - b != APR_BRIGADE_SENTINEL(src); - b = next) { - next = APR_BUCKET_NEXT(b); + while (!APR_BRIGADE_EMPTY(src)) { + b = APR_BRIGADE_FIRST(src); if (APR_BUCKET_IS_METADATA(b)) { - /* fall through */ + APR_BUCKET_REMOVE(b); + APR_BRIGADE_INSERT_TAIL(dest, b); } else { if (remain == b->length) { @@ -704,10 +1280,10 @@ apr_status_t h2_brigade_concat_length(ap apr_bucket_split(b, remain); } } + APR_BUCKET_REMOVE(b); + APR_BRIGADE_INSERT_TAIL(dest, b); + remain -= b->length; } - APR_BUCKET_REMOVE(b); - APR_BRIGADE_INSERT_TAIL(dest, b); - remain -= b->length; } return status; } @@ -852,7 +1428,7 @@ apr_status_t h2_util_bb_readx(apr_bucket if (data_len > avail) { apr_bucket_split(b, avail); - data_len = avail; + data_len = (apr_size_t)avail; } if (consume) { @@ -892,51 +1468,15 @@ apr_size_t h2_util_bucket_print(char *bu off += apr_snprintf(buffer+off, bmax-off, "%s", sep); } - if (APR_BUCKET_IS_METADATA(b)) { - if (APR_BUCKET_IS_EOS(b)) { - off += apr_snprintf(buffer+off, bmax-off, "eos"); - } - else if (APR_BUCKET_IS_FLUSH(b)) { - off += apr_snprintf(buffer+off, bmax-off, "flush"); - } - else if (AP_BUCKET_IS_EOR(b)) { - off += apr_snprintf(buffer+off, bmax-off, "eor"); - } - else { - off += apr_snprintf(buffer+off, bmax-off, "meta(unknown)"); - } + if (bmax <= off) { + return off; } - else { - const char *btype = "data"; - if (APR_BUCKET_IS_FILE(b)) { - btype = "file"; - } - else if (APR_BUCKET_IS_PIPE(b)) { - btype = "pipe"; - } - else if (APR_BUCKET_IS_SOCKET(b)) { - btype = "socket"; - } - else if (APR_BUCKET_IS_HEAP(b)) { - btype = "heap"; - } - else if (APR_BUCKET_IS_TRANSIENT(b)) { - btype = "transient"; - } - else if (APR_BUCKET_IS_IMMORTAL(b)) { - btype = "immortal"; - } -#if APR_HAS_MMAP - else if (APR_BUCKET_IS_MMAP(b)) { - btype = "mmap"; - } -#endif - else if (APR_BUCKET_IS_POOL(b)) { - btype = "pool"; - } - + else if (APR_BUCKET_IS_METADATA(b)) { + off += apr_snprintf(buffer+off, bmax-off, "%s", b->type->name); + } + else if (bmax > off) { off += apr_snprintf(buffer+off, bmax-off, "%s[%ld]", - btype, + b->type->name, (long)(b->length == ((apr_size_t)-1)? -1 : b->length)); } @@ -951,20 +1491,24 @@ apr_size_t h2_util_bb_print(char *buffer const char *sp = ""; apr_bucket *b; - if (bb) { - memset(buffer, 0, bmax--); - off += apr_snprintf(buffer+off, bmax-off, "%s(", tag); - for (b = APR_BRIGADE_FIRST(bb); - bmax && (b != APR_BRIGADE_SENTINEL(bb)); - b = APR_BUCKET_NEXT(b)) { - - off += h2_util_bucket_print(buffer+off, bmax-off, b, sp); - sp = " "; + if (bmax > 1) { + if (bb) { + memset(buffer, 0, bmax--); + off += apr_snprintf(buffer+off, bmax-off, "%s(", tag); + for (b = APR_BRIGADE_FIRST(bb); + (bmax > off) && (b != APR_BRIGADE_SENTINEL(bb)); + b = APR_BUCKET_NEXT(b)) { + + off += h2_util_bucket_print(buffer+off, bmax-off, b, sp); + sp = " "; + } + if (bmax > off) { + off += apr_snprintf(buffer+off, bmax-off, ")%s", sep); + } + } + else { + off += apr_snprintf(buffer+off, bmax-off, "%s(null)%s", tag, sep); } - off += apr_snprintf(buffer+off, bmax-off, ")%s", sep); - } - else { - off += apr_snprintf(buffer+off, bmax-off, "%s(null)%s", tag, sep); } return off; } @@ -972,7 +1516,8 @@ apr_size_t h2_util_bb_print(char *buffer apr_status_t h2_append_brigade(apr_bucket_brigade *to, apr_bucket_brigade *from, apr_off_t *plen, - int *peos) + int *peos, + h2_bucket_gate *should_append) { apr_bucket *e; apr_off_t len = 0, remain = *plen; @@ -983,7 +1528,10 @@ apr_status_t h2_append_brigade(apr_bucke while (!APR_BRIGADE_EMPTY(from)) { e = APR_BRIGADE_FIRST(from); - if (APR_BUCKET_IS_METADATA(e)) { + if (!should_append(e)) { + goto leave; + } + else if (APR_BUCKET_IS_METADATA(e)) { if (APR_BUCKET_IS_EOS(e)) { *peos = 1; apr_bucket_delete(e); @@ -1002,9 +1550,9 @@ apr_status_t h2_append_brigade(apr_bucke if (remain < e->length) { if (remain <= 0) { - return APR_SUCCESS; + goto leave; } - apr_bucket_split(e, remain); + apr_bucket_split(e, (apr_size_t)remain); } } @@ -1013,7 +1561,7 @@ apr_status_t h2_append_brigade(apr_bucke len += e->length; remain -= e->length; } - +leave: *plen = len; return APR_SUCCESS; } @@ -1061,89 +1609,150 @@ static int count_header(void *ctx, const return 1; } -#define NV_ADD_LIT_CS(nv, k, v) add_header(nv, k, sizeof(k) - 1, v, strlen(v)) -#define NV_ADD_CS_CS(nv, k, v) add_header(nv, k, strlen(k), v, strlen(v)) +static const char *inv_field_name_chr(const char *token) +{ + const char *p = ap_scan_http_token(token); + if (p == token && *p == ':') { + p = ap_scan_http_token(++p); + } + return (p && *p)? p : NULL; +} -static int add_header(h2_ngheader *ngh, - const char *key, size_t key_len, - const char *value, size_t val_len) +static const char *inv_field_value_chr(const char *token) { - nghttp2_nv *nv = &ngh->nv[ngh->nvlen++]; - + const char *p = ap_scan_http_field_content(token); + return (p && *p)? p : NULL; +} + +typedef struct ngh_ctx { + apr_pool_t *p; + int unsafe; + h2_ngheader *ngh; + apr_status_t status; +} ngh_ctx; + +static int add_header(ngh_ctx *ctx, const char *key, const char *value) +{ + nghttp2_nv *nv = &(ctx->ngh)->nv[(ctx->ngh)->nvlen++]; + const char *p; + + if (!ctx->unsafe) { + if ((p = inv_field_name_chr(key))) { + ap_log_perror(APLOG_MARK, APLOG_TRACE1, APR_EINVAL, ctx->p, + "h2_request: head field '%s: %s' has invalid char %s", + key, value, p); + ctx->status = APR_EINVAL; + return 0; + } + if ((p = inv_field_value_chr(value))) { + ap_log_perror(APLOG_MARK, APLOG_TRACE1, APR_EINVAL, ctx->p, + "h2_request: head field '%s: %s' has invalid char %s", + key, value, p); + ctx->status = APR_EINVAL; + return 0; + } + } nv->name = (uint8_t*)key; - nv->namelen = key_len; + nv->namelen = strlen(key); nv->value = (uint8_t*)value; - nv->valuelen = val_len; + nv->valuelen = strlen(value); + return 1; } static int add_table_header(void *ctx, const char *key, const char *value) { if (!h2_util_ignore_header(key)) { - add_header(ctx, key, strlen(key), value, strlen(value)); + add_header(ctx, key, value); } return 1; } - -h2_ngheader *h2_util_ngheader_make(apr_pool_t *p, apr_table_t *header) +static apr_status_t ngheader_create(h2_ngheader **ph, apr_pool_t *p, + int unsafe, size_t key_count, + const char *keys[], const char *values[], + apr_table_t *headers) { - h2_ngheader *ngh; - size_t n; + ngh_ctx ctx; + size_t n, i; - n = 0; - apr_table_do(count_header, &n, header, NULL); + ctx.p = p; + ctx.unsafe = unsafe; + + n = key_count; + apr_table_do(count_header, &n, headers, NULL); + + *ph = ctx.ngh = apr_pcalloc(p, sizeof(h2_ngheader)); + if (!ctx.ngh) { + return APR_ENOMEM; + } + + ctx.ngh->nv = apr_pcalloc(p, n * sizeof(nghttp2_nv)); + if (!ctx.ngh->nv) { + return APR_ENOMEM; + } + + ctx.status = APR_SUCCESS; + for (i = 0; i < key_count; ++i) { + if (!add_header(&ctx, keys[i], values[i])) { + return ctx.status; + } + } - ngh = apr_pcalloc(p, sizeof(h2_ngheader)); - ngh->nv = apr_pcalloc(p, n * sizeof(nghttp2_nv)); - apr_table_do(add_table_header, ngh, header, NULL); + apr_table_do(add_table_header, &ctx, headers, NULL); - return ngh; + return ctx.status; } -h2_ngheader *h2_util_ngheader_make_res(apr_pool_t *p, - int http_status, - apr_table_t *header) +static int is_unsafe(h2_headers *h) { - h2_ngheader *ngh; - size_t n; - - n = 1; - apr_table_do(count_header, &n, header, NULL); - - ngh = apr_pcalloc(p, sizeof(h2_ngheader)); - ngh->nv = apr_pcalloc(p, n * sizeof(nghttp2_nv)); - NV_ADD_LIT_CS(ngh, ":status", apr_psprintf(p, "%d", http_status)); - apr_table_do(add_table_header, ngh, header, NULL); + const char *v = apr_table_get(h->notes, H2_HDR_CONFORMANCE); + return (v && !strcmp(v, H2_HDR_CONFORMANCE_UNSAFE)); +} - return ngh; +apr_status_t h2_res_create_ngtrailer(h2_ngheader **ph, apr_pool_t *p, + h2_headers *headers) +{ + return ngheader_create(ph, p, is_unsafe(headers), + 0, NULL, NULL, headers->headers); +} + +apr_status_t h2_res_create_ngheader(h2_ngheader **ph, apr_pool_t *p, + h2_headers *headers) +{ + const char *keys[] = { + ":status" + }; + const char *values[] = { + apr_psprintf(p, "%d", headers->status) + }; + return ngheader_create(ph, p, is_unsafe(headers), + H2_ALEN(keys), keys, values, headers->headers); } -h2_ngheader *h2_util_ngheader_make_req(apr_pool_t *p, - const struct h2_request *req) +apr_status_t h2_req_create_ngheader(h2_ngheader **ph, apr_pool_t *p, + const struct h2_request *req) { - h2_ngheader *ngh; - size_t n; + const char *keys[] = { + ":scheme", + ":authority", + ":path", + ":method", + }; + const char *values[] = { + req->scheme, + req->authority, + req->path, + req->method, + }; - AP_DEBUG_ASSERT(req); - AP_DEBUG_ASSERT(req->scheme); - AP_DEBUG_ASSERT(req->authority); - AP_DEBUG_ASSERT(req->path); - AP_DEBUG_ASSERT(req->method); - - n = 4; - apr_table_do(count_header, &n, req->headers, NULL); - - ngh = apr_pcalloc(p, sizeof(h2_ngheader)); - ngh->nv = apr_pcalloc(p, n * sizeof(nghttp2_nv)); - NV_ADD_LIT_CS(ngh, ":scheme", req->scheme); - NV_ADD_LIT_CS(ngh, ":authority", req->authority); - NV_ADD_LIT_CS(ngh, ":path", req->path); - NV_ADD_LIT_CS(ngh, ":method", req->method); - apr_table_do(add_table_header, ngh, req->headers, NULL); + ap_assert(req->scheme); + ap_assert(req->authority); + ap_assert(req->path); + ap_assert(req->method); - return ngh; + return ngheader_create(ph, p, 0, H2_ALEN(keys), keys, values, req->headers); } /******************************************************************************* @@ -1160,7 +1769,6 @@ typedef struct { #define H2_LIT_ARGS(a) (a),H2_ALEN(a) static literal IgnoredRequestHeaders[] = { - H2_DEF_LITERAL("expect"), H2_DEF_LITERAL("upgrade"), H2_DEF_LITERAL("connection"), H2_DEF_LITERAL("keep-alive"), @@ -1194,15 +1802,12 @@ static literal IgnoredResponseTrailers[] H2_DEF_LITERAL("www-authenticate"), H2_DEF_LITERAL("proxy-authenticate"), }; -static literal IgnoredProxyRespHds[] = { - H2_DEF_LITERAL("alt-svc"), -}; static int ignore_header(const literal *lits, size_t llen, const char *name, size_t nlen) { const literal *lit; - int i; + size_t i; for (i = 0; i < llen; ++i) { lit = &lits[i]; @@ -1229,13 +1834,7 @@ int h2_res_ignore_trailer(const char *na return ignore_header(H2_LIT_ARGS(IgnoredResponseTrailers), name, len); } -int h2_proxy_res_ignore_header(const char *name, size_t len) -{ - return (h2_req_ignore_header(name, len) - || ignore_header(H2_LIT_ARGS(IgnoredProxyRespHds), name, len)); -} - -apr_status_t h2_headers_add_h1(apr_table_t *headers, apr_pool_t *pool, +apr_status_t h2_req_add_header(apr_table_t *headers, apr_pool_t *pool, const char *name, size_t nlen, const char *value, size_t vlen) { @@ -1276,13 +1875,12 @@ apr_status_t h2_headers_add_h1(apr_table * h2 request handling ******************************************************************************/ -h2_request *h2_req_createn(int id, apr_pool_t *pool, const char *method, - const char *scheme, const char *authority, - const char *path, apr_table_t *header, int serialize) +h2_request *h2_req_create(int id, apr_pool_t *pool, const char *method, + const char *scheme, const char *authority, + const char *path, apr_table_t *header, int serialize) { h2_request *req = apr_pcalloc(pool, sizeof(h2_request)); - req->id = id; req->method = method; req->scheme = scheme; req->authority = authority; @@ -1294,49 +1892,6 @@ h2_request *h2_req_createn(int id, apr_p return req; } -h2_request *h2_req_create(int id, apr_pool_t *pool, int serialize) -{ - return h2_req_createn(id, pool, NULL, NULL, NULL, NULL, NULL, serialize); -} - -typedef struct { - apr_table_t *headers; - apr_pool_t *pool; -} h1_ctx; - -static int set_h1_header(void *ctx, const char *key, const char *value) -{ - h1_ctx *x = ctx; - size_t klen = strlen(key); - if (!h2_req_ignore_header(key, klen)) { - h2_headers_add_h1(x->headers, x->pool, key, klen, value, strlen(value)); - } - return 1; -} - -apr_status_t h2_req_make(h2_request *req, apr_pool_t *pool, - const char *method, const char *scheme, - const char *authority, const char *path, - apr_table_t *headers) -{ - h1_ctx x; - - req->method = method; - req->scheme = scheme; - req->authority = authority; - req->path = path; - - AP_DEBUG_ASSERT(req->scheme); - AP_DEBUG_ASSERT(req->authority); - AP_DEBUG_ASSERT(req->path); - AP_DEBUG_ASSERT(req->method); - - x.pool = pool; - x.headers = req->headers; - apr_table_do(set_h1_header, &x, headers, NULL); - return APR_SUCCESS; -} - /******************************************************************************* * frame logging ******************************************************************************/ @@ -1423,11 +1978,11 @@ int h2_util_frame_print(const nghttp2_fr /******************************************************************************* * push policy ******************************************************************************/ -void h2_push_policy_determine(struct h2_request *req, apr_pool_t *p, int push_enabled) +int h2_push_policy_determine(apr_table_t *headers, apr_pool_t *p, int push_enabled) { h2_push_policy policy = H2_PUSH_NONE; if (push_enabled) { - const char *val = apr_table_get(req->headers, "accept-push-policy"); + const char *val = apr_table_get(headers, "accept-push-policy"); if (val) { if (ap_find_token(p, val, "fast-load")) { policy = H2_PUSH_FAST_LOAD; @@ -1450,6 +2005,6 @@ void h2_push_policy_determine(struct h2_ policy = H2_PUSH_DEFAULT; } } - req->push_policy = policy; + return policy; } diff -up --new-file httpd-2.4.23/modules/http2/h2_util.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_util.h --- httpd-2.4.23/modules/http2/h2_util.h 2016-06-14 10:51:31.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_util.h 2017-10-13 10:37:45.000000000 +0200 @@ -68,7 +68,6 @@ void h2_ihash_remove_val(h2_ihash_t *ih, void h2_ihash_clear(h2_ihash_t *ih); size_t h2_ihash_shift(h2_ihash_t *ih, void **buffer, size_t max); -size_t h2_ihash_ishift(h2_ihash_t *ih, int *buffer, size_t max); /******************************************************************************* * iqueue - sorted list of int with user defined ordering @@ -116,12 +115,22 @@ int h2_iq_count(h2_iqueue *q); /** * Add a stream id to the queue. * - * @param q the queue to append the task to + * @param q the queue to append the id to * @param sid the stream id to add * @param cmp the comparator for sorting - * @param ctx user data for comparator + * @param ctx user data for comparator + * @return != 0 iff id was not already there */ -void h2_iq_add(h2_iqueue *q, int sid, h2_iq_cmp *cmp, void *ctx); +int h2_iq_add(h2_iqueue *q, int sid, h2_iq_cmp *cmp, void *ctx); + +/** + * Append the id to the queue if not already present. + * + * @param q the queue to append the id to + * @param sid the id to append + * @return != 0 iff id was not already there + */ +int h2_iq_append(h2_iqueue *q, int sid); /** * Remove the stream id from the queue. Return != 0 iff task @@ -148,19 +157,175 @@ void h2_iq_clear(h2_iqueue *q); void h2_iq_sort(h2_iqueue *q, h2_iq_cmp *cmp, void *ctx); /** - * Get the first stream id from the queue or NULL if the queue is empty. - * The task will be removed. + * Get the first id from the queue or 0 if the queue is empty. + * The id is being removed. * - * @param q the queue to get the first task from - * @return the first stream id of the queue, 0 if empty + * @param q the queue to get the first id from + * @return the first id of the queue, 0 if empty */ int h2_iq_shift(h2_iqueue *q); +/** + * Get the first max ids from the queue. All these ids will be removed. + * + * @param q the queue to get the first task from + * @param pint the int array to receive the values + * @param max the maximum number of ids to shift + * @return the actual number of ids shifted + */ +size_t h2_iq_mshift(h2_iqueue *q, int *pint, size_t max); + +/** + * Determine if int is in the queue already + * + * @parm q the queue + * @param sid the integer id to check for + * @return != 0 iff sid is already in the queue + */ +int h2_iq_contains(h2_iqueue *q, int sid); + +/******************************************************************************* + * FIFO queue (void* elements) + ******************************************************************************/ + +/** + * A thread-safe FIFO queue with some extra bells and whistles, if you + * do not need anything special, better use 'apr_queue'. + */ +typedef struct h2_fifo h2_fifo; + +/** + * Create a FIFO queue that can hold up to capacity elements. Elements can + * appear several times. + */ +apr_status_t h2_fifo_create(h2_fifo **pfifo, apr_pool_t *pool, int capacity); + +/** + * Create a FIFO set that can hold up to capacity elements. Elements only + * appear once. Pushing an element already present does not change the + * queue and is successful. + */ +apr_status_t h2_fifo_set_create(h2_fifo **pfifo, apr_pool_t *pool, int capacity); + +apr_status_t h2_fifo_term(h2_fifo *fifo); +apr_status_t h2_fifo_interrupt(h2_fifo *fifo); + +int h2_fifo_count(h2_fifo *fifo); + +/** + * Push en element into the queue. Blocks if there is no capacity left. + * + * @param fifo the FIFO queue + * @param elem the element to push + * @return APR_SUCCESS on push, APR_EAGAIN on try_push on a full queue, + * APR_EEXIST when in set mode and elem already there. + */ +apr_status_t h2_fifo_push(h2_fifo *fifo, void *elem); +apr_status_t h2_fifo_try_push(h2_fifo *fifo, void *elem); + +apr_status_t h2_fifo_pull(h2_fifo *fifo, void **pelem); +apr_status_t h2_fifo_try_pull(h2_fifo *fifo, void **pelem); + +typedef enum { + H2_FIFO_OP_PULL, /* pull the element from the queue, ie discard it */ + H2_FIFO_OP_REPUSH, /* pull and immediatley re-push it */ +} h2_fifo_op_t; + +typedef h2_fifo_op_t h2_fifo_peek_fn(void *head, void *ctx); + +/** + * Call given function on the head of the queue, once it exists, and + * perform the returned operation on it. The queue will hold its lock during + * this time, so no other operations on the queue are possible. + * @param fifo the queue to peek at + * @param fn the function to call on the head, once available + * @param ctx context to pass in call to function + */ +apr_status_t h2_fifo_peek(h2_fifo *fifo, h2_fifo_peek_fn *fn, void *ctx); + +/** + * Non-blocking version of h2_fifo_peek. + */ +apr_status_t h2_fifo_try_peek(h2_fifo *fifo, h2_fifo_peek_fn *fn, void *ctx); + +/** + * Remove the elem from the queue, will remove multiple appearances. + * @param elem the element to remove + * @return APR_SUCCESS iff > 0 elems were removed, APR_EAGAIN otherwise. + */ +apr_status_t h2_fifo_remove(h2_fifo *fifo, void *elem); + +/******************************************************************************* + * iFIFO queue (int elements) + ******************************************************************************/ + +/** + * A thread-safe FIFO queue with some extra bells and whistles, if you + * do not need anything special, better use 'apr_queue'. + */ +typedef struct h2_ififo h2_ififo; + +/** + * Create a FIFO queue that can hold up to capacity int. ints can + * appear several times. + */ +apr_status_t h2_ififo_create(h2_ififo **pfifo, apr_pool_t *pool, int capacity); + +/** + * Create a FIFO set that can hold up to capacity integers. Ints only + * appear once. Pushing an int already present does not change the + * queue and is successful. + */ +apr_status_t h2_ififo_set_create(h2_ififo **pfifo, apr_pool_t *pool, int capacity); + +apr_status_t h2_ififo_term(h2_ififo *fifo); +apr_status_t h2_ififo_interrupt(h2_ififo *fifo); + +int h2_ififo_count(h2_ififo *fifo); + +/** + * Push an int into the queue. Blocks if there is no capacity left. + * + * @param fifo the FIFO queue + * @param id the int to push + * @return APR_SUCCESS on push, APR_EAGAIN on try_push on a full queue, + * APR_EEXIST when in set mode and elem already there. + */ +apr_status_t h2_ififo_push(h2_ififo *fifo, int id); +apr_status_t h2_ififo_try_push(h2_ififo *fifo, int id); + +apr_status_t h2_ififo_pull(h2_ififo *fifo, int *pi); +apr_status_t h2_ififo_try_pull(h2_ififo *fifo, int *pi); + +typedef h2_fifo_op_t h2_ififo_peek_fn(int head, void *ctx); + +/** + * Call given function on the head of the queue, once it exists, and + * perform the returned operation on it. The queue will hold its lock during + * this time, so no other operations on the queue are possible. + * @param fifo the queue to peek at + * @param fn the function to call on the head, once available + * @param ctx context to pass in call to function + */ +apr_status_t h2_ififo_peek(h2_ififo *fifo, h2_ififo_peek_fn *fn, void *ctx); + +/** + * Non-blocking version of h2_fifo_peek. + */ +apr_status_t h2_ififo_try_peek(h2_ififo *fifo, h2_ififo_peek_fn *fn, void *ctx); + +/** + * Remove the integer from the queue, will remove multiple appearances. + * @param id the integer to remove + * @return APR_SUCCESS iff > 0 ints were removed, APR_EAGAIN otherwise. + */ +apr_status_t h2_ififo_remove(h2_ififo *fifo, int id); + /******************************************************************************* * common helpers ******************************************************************************/ /* h2_log2(n) iff n is a power of 2 */ -unsigned char h2_log2(apr_uint32_t n); +unsigned char h2_log2(int n); /** * Count the bytes that all key/value pairs in a table have @@ -172,15 +337,6 @@ unsigned char h2_log2(apr_uint32_t n); */ apr_size_t h2_util_table_bytes(apr_table_t *t, apr_size_t pair_extra); -/** - * Return != 0 iff the string s contains the token, as specified in - * HTTP header syntax, rfc7230. - */ -int h2_util_contains_token(apr_pool_t *pool, const char *s, const char *token); - -const char *h2_util_first_token_match(apr_pool_t *pool, const char *s, - const char *tokens[], apr_size_t len); - /** Match a header value against a string constance, case insensitive */ #define H2_HD_MATCH_LIT(l, name, nlen) \ ((nlen == sizeof(l) - 1) && !apr_strnatcasecmp(l, name)) @@ -191,18 +347,18 @@ const char *h2_util_first_token_match(ap int h2_req_ignore_header(const char *name, size_t len); int h2_req_ignore_trailer(const char *name, size_t len); int h2_res_ignore_trailer(const char *name, size_t len); -int h2_proxy_res_ignore_header(const char *name, size_t len); /** * Set the push policy for the given request. Takes request headers into * account, see draft https://tools.ietf.org/html/draft-ruellan-http-accept-push-policy-00 * for details. * - * @param req the request to determine the policy for + * @param headers the http headers to inspect * @param p the pool to use * @param push_enabled if HTTP/2 server push is generally enabled for this request + * @return the push policy desired */ -void h2_push_policy_determine(struct h2_request *req, apr_pool_t *p, int push_enabled); +int h2_push_policy_determine(apr_table_t *headers, apr_pool_t *p, int push_enabled); /******************************************************************************* * base64 url encoding, different table from normal base64 @@ -241,19 +397,21 @@ const char *h2_util_base64url_encode(con int h2_util_ignore_header(const char *name); +struct h2_headers; + typedef struct h2_ngheader { nghttp2_nv *nv; apr_size_t nvlen; } h2_ngheader; -h2_ngheader *h2_util_ngheader_make(apr_pool_t *p, apr_table_t *header); -h2_ngheader *h2_util_ngheader_make_res(apr_pool_t *p, - int http_status, - apr_table_t *header); -h2_ngheader *h2_util_ngheader_make_req(apr_pool_t *p, - const struct h2_request *req); +apr_status_t h2_res_create_ngtrailer(h2_ngheader **ph, apr_pool_t *p, + struct h2_headers *headers); +apr_status_t h2_res_create_ngheader(h2_ngheader **ph, apr_pool_t *p, + struct h2_headers *headers); +apr_status_t h2_req_create_ngheader(h2_ngheader **ph, apr_pool_t *p, + const struct h2_request *req); -apr_status_t h2_headers_add_h1(apr_table_t *headers, apr_pool_t *pool, +apr_status_t h2_req_add_header(apr_table_t *headers, apr_pool_t *pool, const char *name, size_t nlen, const char *value, size_t vlen); @@ -261,16 +419,10 @@ apr_status_t h2_headers_add_h1(apr_table * h2_request helpers ******************************************************************************/ -struct h2_request *h2_req_createn(int id, apr_pool_t *pool, const char *method, - const char *scheme, const char *authority, - const char *path, apr_table_t *header, - int serialize); -struct h2_request *h2_req_create(int id, apr_pool_t *pool, int serialize); - -apr_status_t h2_req_make(struct h2_request *req, apr_pool_t *pool, - const char *method, const char *scheme, - const char *authority, const char *path, - apr_table_t *headers); +struct h2_request *h2_req_create(int id, apr_pool_t *pool, const char *method, + const char *scheme, const char *authority, + const char *path, apr_table_t *header, + int serialize); /******************************************************************************* * apr brigade helpers @@ -358,14 +510,15 @@ do { \ const char *line = "(null)"; \ apr_size_t len, bmax = sizeof(buffer)/sizeof(buffer[0]); \ len = h2_util_bb_print(buffer, bmax, (tag), "", (bb)); \ - ap_log_cerror(APLOG_MARK, level, 0, (c), "bb_dump(%ld-%d): %s", \ - (c)->id, (int)(sid), (len? buffer : line)); \ + ap_log_cerror(APLOG_MARK, level, 0, (c), "bb_dump(%ld): %s", \ + ((c)->master? (c)->master->id : (c)->id), (len? buffer : line)); \ } while(0) +typedef int h2_bucket_gate(apr_bucket *b); /** * Transfer buckets from one brigade to another with a limit on the - * maximum amount of bytes transfered. Does no setaside magic, lifetime + * maximum amount of bytes transferred. Does no setaside magic, lifetime * of brigades must fit. * @param to brigade to transfer buckets to * @param from brigades to remove buckets from @@ -375,7 +528,8 @@ do { \ apr_status_t h2_append_brigade(apr_bucket_brigade *to, apr_bucket_brigade *from, apr_off_t *plen, - int *peos); + int *peos, + h2_bucket_gate *should_append); /** * Get an approximnation of the memory footprint of the given diff -up --new-file httpd-2.4.23/modules/http2/h2_version.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_version.h --- httpd-2.4.23/modules/http2/h2_version.h 2016-06-15 12:06:21.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_version.h 2017-10-13 10:37:45.000000000 +0200 @@ -26,7 +26,7 @@ * @macro * Version number of the http2 module as c string */ -#define MOD_HTTP2_VERSION "1.5.11" +#define MOD_HTTP2_VERSION "1.10.12" /** * @macro @@ -34,7 +34,7 @@ * release. This is a 24 bit number with 8 bits for major number, 8 bits * for minor and 8 bits for patch. Version 1.2.3 becomes 0x010203. */ -#define MOD_HTTP2_VERSION_NUM 0x01050b +#define MOD_HTTP2_VERSION_NUM 0x010a0b #endif /* mod_h2_h2_version_h */ diff -up --new-file httpd-2.4.23/modules/http2/h2_worker.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_worker.c --- httpd-2.4.23/modules/http2/h2_worker.c 2016-05-18 17:10:20.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_worker.c 1970-01-01 01:00:00.000000000 +0100 @@ -1,103 +0,0 @@ -/* Copyright 2015 greenbytes GmbH (https://www.greenbytes.de) - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include <assert.h> - -#include <apr_thread_cond.h> - -#include <mpm_common.h> -#include <httpd.h> -#include <http_core.h> -#include <http_log.h> - -#include "h2.h" -#include "h2_private.h" -#include "h2_conn.h" -#include "h2_ctx.h" -#include "h2_h2.h" -#include "h2_mplx.h" -#include "h2_task.h" -#include "h2_worker.h" - -static void* APR_THREAD_FUNC execute(apr_thread_t *thread, void *wctx) -{ - h2_worker *worker = (h2_worker *)wctx; - int sticky; - - while (!worker->aborted) { - h2_task *task; - - /* Get a h2_task from the main workers queue. */ - worker->get_next(worker, worker->ctx, &task, &sticky); - while (task) { - - h2_task_do(task, thread); - /* report the task done and maybe get another one from the same - * mplx (= master connection), if we can be sticky. - */ - if (sticky && !worker->aborted) { - h2_mplx_task_done(task->mplx, task, &task); - } - else { - h2_mplx_task_done(task->mplx, task, NULL); - task = NULL; - } - } - } - - worker->worker_done(worker, worker->ctx); - return NULL; -} - -h2_worker *h2_worker_create(int id, - apr_pool_t *pool, - apr_threadattr_t *attr, - h2_worker_mplx_next_fn *get_next, - h2_worker_done_fn *worker_done, - void *ctx) -{ - h2_worker *w = apr_pcalloc(pool, sizeof(h2_worker)); - if (w) { - w->id = id; - APR_RING_ELEM_INIT(w, link); - w->get_next = get_next; - w->worker_done = worker_done; - w->ctx = ctx; - apr_thread_create(&w->thread, attr, execute, w, pool); - } - return w; -} - -apr_status_t h2_worker_destroy(h2_worker *worker) -{ - if (worker->thread) { - apr_status_t status; - apr_thread_join(&status, worker->thread); - worker->thread = NULL; - } - return APR_SUCCESS; -} - -void h2_worker_abort(h2_worker *worker) -{ - worker->aborted = 1; -} - -int h2_worker_is_aborted(h2_worker *worker) -{ - return worker->aborted; -} - - diff -up --new-file httpd-2.4.23/modules/http2/h2_worker.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_worker.h --- httpd-2.4.23/modules/http2/h2_worker.h 2016-04-28 14:43:02.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_worker.h 1970-01-01 01:00:00.000000000 +0100 @@ -1,135 +0,0 @@ -/* Copyright 2015 greenbytes GmbH (https://www.greenbytes.de) - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#ifndef __mod_h2__h2_worker__ -#define __mod_h2__h2_worker__ - -struct h2_mplx; -struct h2_request; -struct h2_task; - -/* h2_worker is a basically a apr_thread_t that reads fromt he h2_workers - * task queue and runs h2_tasks it is given. - */ -typedef struct h2_worker h2_worker; - -/* Invoked when the worker wants a new task to process. Will block - * until a h2_mplx becomes available or the worker itself - * gets aborted (idle timeout, for example). */ -typedef apr_status_t h2_worker_mplx_next_fn(h2_worker *worker, - void *ctx, - struct h2_task **ptask, - int *psticky); - -/* Invoked just before the worker thread exits. */ -typedef void h2_worker_done_fn(h2_worker *worker, void *ctx); - - -struct h2_worker { - int id; - /** Links to the rest of the workers */ - APR_RING_ENTRY(h2_worker) link; - apr_thread_t *thread; - h2_worker_mplx_next_fn *get_next; - h2_worker_done_fn *worker_done; - void *ctx; - int aborted; -}; - -/** - * The magic pointer value that indicates the head of a h2_worker list - * @param b The worker list - * @return The magic pointer value - */ -#define H2_WORKER_LIST_SENTINEL(b) APR_RING_SENTINEL((b), h2_worker, link) - -/** - * Determine if the worker list is empty - * @param b The list to check - * @return true or false - */ -#define H2_WORKER_LIST_EMPTY(b) APR_RING_EMPTY((b), h2_worker, link) - -/** - * Return the first worker in a list - * @param b The list to query - * @return The first worker in the list - */ -#define H2_WORKER_LIST_FIRST(b) APR_RING_FIRST(b) - -/** - * Return the last worker in a list - * @param b The list to query - * @return The last worker int he list - */ -#define H2_WORKER_LIST_LAST(b) APR_RING_LAST(b) - -/** - * Insert a single worker at the front of a list - * @param b The list to add to - * @param e The worker to insert - */ -#define H2_WORKER_LIST_INSERT_HEAD(b, e) do { \ - h2_worker *ap__b = (e); \ - APR_RING_INSERT_HEAD((b), ap__b, h2_worker, link); \ - } while (0) - -/** - * Insert a single worker at the end of a list - * @param b The list to add to - * @param e The worker to insert - */ -#define H2_WORKER_LIST_INSERT_TAIL(b, e) do { \ - h2_worker *ap__b = (e); \ - APR_RING_INSERT_TAIL((b), ap__b, h2_worker, link); \ - } while (0) - -/** - * Get the next worker in the list - * @param e The current worker - * @return The next worker - */ -#define H2_WORKER_NEXT(e) APR_RING_NEXT((e), link) -/** - * Get the previous worker in the list - * @param e The current worker - * @return The previous worker - */ -#define H2_WORKER_PREV(e) APR_RING_PREV((e), link) - -/** - * Remove a worker from its list - * @param e The worker to remove - */ -#define H2_WORKER_REMOVE(e) APR_RING_REMOVE((e), link) - - -/* Create a new worker with given id, pool and attributes, callbacks - * callback parameter. - */ -h2_worker *h2_worker_create(int id, - apr_pool_t *pool, - apr_threadattr_t *attr, - h2_worker_mplx_next_fn *get_next, - h2_worker_done_fn *worker_done, - void *ctx); - -apr_status_t h2_worker_destroy(h2_worker *worker); - -void h2_worker_abort(h2_worker *worker); - -int h2_worker_is_aborted(h2_worker *worker); - -#endif /* defined(__mod_h2__h2_worker__) */ diff -up --new-file httpd-2.4.23/modules/http2/h2_workers.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_workers.c --- httpd-2.4.23/modules/http2/h2_workers.c 2016-04-28 14:43:02.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_workers.c 2017-10-13 10:37:45.000000000 +0200 @@ -27,224 +27,265 @@ #include "h2_private.h" #include "h2_mplx.h" #include "h2_task.h" -#include "h2_worker.h" #include "h2_workers.h" +#include "h2_util.h" +typedef struct h2_slot h2_slot; +struct h2_slot { + int id; + h2_slot *next; + h2_workers *workers; + int aborted; + int sticks; + h2_task *task; + apr_thread_t *thread; + apr_thread_mutex_t *lock; + apr_thread_cond_t *not_idle; +}; -static int in_list(h2_workers *workers, h2_mplx *m) +static h2_slot *pop_slot(h2_slot **phead) { - h2_mplx *e; - for (e = H2_MPLX_LIST_FIRST(&workers->mplxs); - e != H2_MPLX_LIST_SENTINEL(&workers->mplxs); - e = H2_MPLX_NEXT(e)) { - if (e == m) { - return 1; + /* Atomically pop a slot from the list */ + for (;;) { + h2_slot *first = *phead; + if (first == NULL) { + return NULL; + } + if (apr_atomic_casptr((void*)phead, first->next, first) == first) { + first->next = NULL; + return first; } } - return 0; } -static void cleanup_zombies(h2_workers *workers, int lock) +static void push_slot(h2_slot **phead, h2_slot *slot) { - if (lock) { - apr_thread_mutex_lock(workers->lock); - } - while (!H2_WORKER_LIST_EMPTY(&workers->zombies)) { - h2_worker *zombie = H2_WORKER_LIST_FIRST(&workers->zombies); - H2_WORKER_REMOVE(zombie); - ap_log_error(APLOG_MARK, APLOG_TRACE3, 0, workers->s, - "h2_workers: cleanup zombie %d", zombie->id); - h2_worker_destroy(zombie); - } - if (lock) { - apr_thread_mutex_unlock(workers->lock); + /* Atomically push a slot to the list */ + ap_assert(!slot->next); + for (;;) { + h2_slot *next = slot->next = *phead; + if (apr_atomic_casptr((void*)phead, slot, next) == next) { + return; + } } } -static h2_task *next_task(h2_workers *workers) +static void* APR_THREAD_FUNC slot_run(apr_thread_t *thread, void *wctx); + +static apr_status_t activate_slot(h2_workers *workers, h2_slot *slot) { - h2_task *task = NULL; - h2_mplx *last = NULL; - int has_more; + apr_status_t status; - /* Get the next h2_mplx to process that has a task to hand out. - * If it does, place it at the end of the queu and return the - * task to the worker. - * If it (currently) has no tasks, remove it so that it needs - * to register again for scheduling. - * If we run out of h2_mplx in the queue, we need to wait for - * new mplx to arrive. Depending on how many workers do exist, - * we do a timed wait or block indefinitely. - */ - while (!task && !H2_MPLX_LIST_EMPTY(&workers->mplxs)) { - h2_mplx *m = H2_MPLX_LIST_FIRST(&workers->mplxs); - - if (last == m) { - break; + slot->workers = workers; + slot->aborted = 0; + slot->task = NULL; + + if (!slot->lock) { + status = apr_thread_mutex_create(&slot->lock, + APR_THREAD_MUTEX_DEFAULT, + workers->pool); + if (status != APR_SUCCESS) { + push_slot(&workers->free, slot); + return status; } - H2_MPLX_REMOVE(m); - --workers->mplx_count; - - task = h2_mplx_pop_task(m, &has_more); - if (has_more) { - H2_MPLX_LIST_INSERT_TAIL(&workers->mplxs, m); - ++workers->mplx_count; - if (!last) { - last = m; - } + } + + if (!slot->not_idle) { + status = apr_thread_cond_create(&slot->not_idle, workers->pool); + if (status != APR_SUCCESS) { + push_slot(&workers->free, slot); + return status; } } - return task; + + ap_log_error(APLOG_MARK, APLOG_TRACE2, 0, workers->s, + "h2_workers: new thread for slot %d", slot->id); + /* thread will either immediately start work or add itself + * to the idle queue */ + apr_thread_create(&slot->thread, workers->thread_attr, slot_run, slot, + workers->pool); + if (!slot->thread) { + push_slot(&workers->free, slot); + return APR_ENOMEM; + } + + apr_atomic_inc32(&workers->worker_count); + return APR_SUCCESS; +} + +static apr_status_t add_worker(h2_workers *workers) +{ + h2_slot *slot = pop_slot(&workers->free); + if (slot) { + return activate_slot(workers, slot); + } + return APR_EAGAIN; +} + +static void wake_idle_worker(h2_workers *workers) +{ + h2_slot *slot = pop_slot(&workers->idle); + if (slot) { + apr_thread_mutex_lock(slot->lock); + apr_thread_cond_signal(slot->not_idle); + apr_thread_mutex_unlock(slot->lock); + } + else if (workers->dynamic) { + add_worker(workers); + } +} + +static void cleanup_zombies(h2_workers *workers) +{ + h2_slot *slot; + while ((slot = pop_slot(&workers->zombies))) { + if (slot->thread) { + apr_status_t status; + apr_thread_join(&status, slot->thread); + slot->thread = NULL; + } + apr_atomic_dec32(&workers->worker_count); + slot->next = NULL; + push_slot(&workers->free, slot); + } +} + +static apr_status_t slot_pull_task(h2_slot *slot, h2_mplx *m) +{ + apr_status_t rv; + + rv = h2_mplx_pop_task(m, &slot->task); + if (slot->task) { + /* Ok, we got something to give back to the worker for execution. + * If we still have idle workers, we let the worker be sticky, + * e.g. making it poll the task's h2_mplx instance for more work + * before asking back here. */ + slot->sticks = slot->workers->max_workers; + return rv; + } + slot->sticks = 0; + return APR_EOF; +} + +static h2_fifo_op_t mplx_peek(void *head, void *ctx) +{ + h2_mplx *m = head; + h2_slot *slot = ctx; + + if (slot_pull_task(slot, m) == APR_EAGAIN) { + wake_idle_worker(slot->workers); + return H2_FIFO_OP_REPUSH; + } + return H2_FIFO_OP_PULL; } /** * Get the next task for the given worker. Will block until a task arrives * or the max_wait timer expires and more than min workers exist. */ -static apr_status_t get_mplx_next(h2_worker *worker, void *ctx, - h2_task **ptask, int *psticky) +static apr_status_t get_next(h2_slot *slot) { + h2_workers *workers = slot->workers; apr_status_t status; - apr_time_t wait_until = 0, now; - h2_workers *workers = ctx; - h2_task *task = NULL; - *ptask = NULL; - *psticky = 0; - - status = apr_thread_mutex_lock(workers->lock); - if (status == APR_SUCCESS) { - ++workers->idle_workers; - ap_log_error(APLOG_MARK, APLOG_TRACE3, 0, workers->s, - "h2_worker(%d): looking for work", worker->id); - - while (!h2_worker_is_aborted(worker) && !workers->aborted - && !(task = next_task(workers))) { - - /* Need to wait for a new tasks to arrive. If we are above - * minimum workers, we do a timed wait. When timeout occurs - * and we have still more workers, we shut down one after - * the other. */ - cleanup_zombies(workers, 0); - if (workers->worker_count > workers->min_workers) { - now = apr_time_now(); - if (now >= wait_until) { - wait_until = now + apr_time_from_sec(workers->max_idle_secs); - } - - ap_log_error(APLOG_MARK, APLOG_TRACE3, 0, workers->s, - "h2_worker(%d): waiting signal, " - "workers=%d, idle=%d", worker->id, - (int)workers->worker_count, - workers->idle_workers); - status = apr_thread_cond_timedwait(workers->mplx_added, - workers->lock, - wait_until - now); - if (status == APR_TIMEUP - && workers->worker_count > workers->min_workers) { - /* waited long enough without getting a task and - * we are above min workers, abort this one. */ - ap_log_error(APLOG_MARK, APLOG_TRACE3, 0, - workers->s, - "h2_workers: aborting idle worker"); - h2_worker_abort(worker); - break; - } - } - else { - ap_log_error(APLOG_MARK, APLOG_TRACE3, 0, workers->s, - "h2_worker(%d): waiting signal (eternal), " - "worker_count=%d, idle=%d", worker->id, - (int)workers->worker_count, - workers->idle_workers); - apr_thread_cond_wait(workers->mplx_added, workers->lock); + slot->task = NULL; + while (!slot->aborted) { + if (!slot->task) { + status = h2_fifo_try_peek(workers->mplxs, mplx_peek, slot); + if (status == APR_EOF) { + return status; } } - /* Here, we either have gotten task or decided to shut down - * the calling worker. - */ - if (task) { - /* Ok, we got something to give back to the worker for execution. - * If we have more idle workers than h2_mplx in our queue, then - * we let the worker be sticky, e.g. making it poll the task's - * h2_mplx instance for more work before asking back here. - * This avoids entering our global lock as long as enough idle - * workers remain. Stickiness of a worker ends when the connection - * has no new tasks to process, so the worker will get back here - * eventually. - */ - *ptask = task; - *psticky = (workers->max_workers >= workers->mplx_count); - - if (workers->mplx_count && workers->idle_workers > 1) { - apr_thread_cond_signal(workers->mplx_added); - } + if (slot->task) { + return APR_SUCCESS; } - --workers->idle_workers; - apr_thread_mutex_unlock(workers->lock); + cleanup_zombies(workers); + + apr_thread_mutex_lock(slot->lock); + push_slot(&workers->idle, slot); + apr_thread_cond_wait(slot->not_idle, slot->lock); + apr_thread_mutex_unlock(slot->lock); } - - return *ptask? APR_SUCCESS : APR_EOF; + return APR_EOF; } -static void worker_done(h2_worker *worker, void *ctx) +static void slot_done(h2_slot *slot) { - h2_workers *workers = ctx; - apr_status_t status = apr_thread_mutex_lock(workers->lock); - if (status == APR_SUCCESS) { - ap_log_error(APLOG_MARK, APLOG_TRACE3, 0, workers->s, - "h2_worker(%d): done", worker->id); - H2_WORKER_REMOVE(worker); - --workers->worker_count; - H2_WORKER_LIST_INSERT_TAIL(&workers->zombies, worker); - - apr_thread_mutex_unlock(workers->lock); - } + push_slot(&(slot->workers->zombies), slot); } -static apr_status_t add_worker(h2_workers *workers) + +static void* APR_THREAD_FUNC slot_run(apr_thread_t *thread, void *wctx) { - h2_worker *w = h2_worker_create(workers->next_worker_id++, - workers->pool, workers->thread_attr, - get_mplx_next, worker_done, workers); - if (!w) { - return APR_ENOMEM; + h2_slot *slot = wctx; + + while (!slot->aborted) { + + /* Get a h2_task from the mplxs queue. */ + get_next(slot); + while (slot->task) { + + h2_task_do(slot->task, thread, slot->id); + + /* Report the task as done. If stickyness is left, offer the + * mplx the opportunity to give us back a new task right away. + */ + if (!slot->aborted && (--slot->sticks > 0)) { + h2_mplx_task_done(slot->task->mplx, slot->task, &slot->task); + } + else { + h2_mplx_task_done(slot->task->mplx, slot->task, NULL); + slot->task = NULL; + } + } } - ap_log_error(APLOG_MARK, APLOG_TRACE3, 0, workers->s, - "h2_workers: adding worker(%d)", w->id); - ++workers->worker_count; - H2_WORKER_LIST_INSERT_TAIL(&workers->workers, w); - return APR_SUCCESS; + + slot_done(slot); + return NULL; } -static apr_status_t h2_workers_start(h2_workers *workers) +static apr_status_t workers_pool_cleanup(void *data) { - apr_status_t status = apr_thread_mutex_lock(workers->lock); - if (status == APR_SUCCESS) { - ap_log_error(APLOG_MARK, APLOG_TRACE3, 0, workers->s, - "h2_workers: starting"); - - while (workers->worker_count < workers->min_workers - && status == APR_SUCCESS) { - status = add_worker(workers); + h2_workers *workers = data; + h2_slot *slot; + + if (!workers->aborted) { + workers->aborted = 1; + /* abort all idle slots */ + for (;;) { + slot = pop_slot(&workers->idle); + if (slot) { + apr_thread_mutex_lock(slot->lock); + slot->aborted = 1; + apr_thread_cond_signal(slot->not_idle); + apr_thread_mutex_unlock(slot->lock); + } + else { + break; + } } - apr_thread_mutex_unlock(workers->lock); + + h2_fifo_term(workers->mplxs); + h2_fifo_interrupt(workers->mplxs); + + cleanup_zombies(workers); } - return status; + return APR_SUCCESS; } h2_workers *h2_workers_create(server_rec *s, apr_pool_t *server_pool, int min_workers, int max_workers, - apr_size_t max_tx_handles) + int idle_secs) { apr_status_t status; h2_workers *workers; apr_pool_t *pool; + int i, n; - AP_DEBUG_ASSERT(s); - AP_DEBUG_ASSERT(server_pool); + ap_assert(s); + ap_assert(server_pool); /* let's have our own pool that will be parent to all h2_worker * instances we create. This happens in various threads, but always @@ -254,163 +295,77 @@ h2_workers *h2_workers_create(server_rec apr_pool_create(&pool, server_pool); apr_pool_tag(pool, "h2_workers"); workers = apr_pcalloc(pool, sizeof(h2_workers)); - if (workers) { - workers->s = s; - workers->pool = pool; - workers->min_workers = min_workers; - workers->max_workers = max_workers; - workers->max_idle_secs = 10; - - workers->max_tx_handles = max_tx_handles; - workers->spare_tx_handles = workers->max_tx_handles; - - apr_threadattr_create(&workers->thread_attr, workers->pool); - if (ap_thread_stacksize != 0) { - apr_threadattr_stacksize_set(workers->thread_attr, - ap_thread_stacksize); - ap_log_error(APLOG_MARK, APLOG_TRACE3, 0, s, - "h2_workers: using stacksize=%ld", - (long)ap_thread_stacksize); - } - - APR_RING_INIT(&workers->workers, h2_worker, link); - APR_RING_INIT(&workers->zombies, h2_worker, link); - APR_RING_INIT(&workers->mplxs, h2_mplx, link); - - status = apr_thread_mutex_create(&workers->lock, - APR_THREAD_MUTEX_DEFAULT, - workers->pool); - if (status == APR_SUCCESS) { - status = apr_thread_cond_create(&workers->mplx_added, workers->pool); - } - - if (status == APR_SUCCESS) { - status = apr_thread_mutex_create(&workers->tx_lock, - APR_THREAD_MUTEX_DEFAULT, - workers->pool); - } - - if (status == APR_SUCCESS) { - status = h2_workers_start(workers); - } - - if (status != APR_SUCCESS) { - h2_workers_destroy(workers); - workers = NULL; - } + if (!workers) { + return NULL; } - return workers; -} - -void h2_workers_destroy(h2_workers *workers) -{ - /* before we go, cleanup any zombie workers that may have accumulated */ - cleanup_zombies(workers, 1); - if (workers->mplx_added) { - apr_thread_cond_destroy(workers->mplx_added); - workers->mplx_added = NULL; - } - if (workers->lock) { - apr_thread_mutex_destroy(workers->lock); - workers->lock = NULL; - } - while (!H2_MPLX_LIST_EMPTY(&workers->mplxs)) { - h2_mplx *m = H2_MPLX_LIST_FIRST(&workers->mplxs); - H2_MPLX_REMOVE(m); + workers->s = s; + workers->pool = pool; + workers->min_workers = min_workers; + workers->max_workers = max_workers; + workers->max_idle_secs = (idle_secs > 0)? idle_secs : 10; + + status = h2_fifo_create(&workers->mplxs, pool, 2 * workers->max_workers); + if (status != APR_SUCCESS) { + return NULL; } - while (!H2_WORKER_LIST_EMPTY(&workers->workers)) { - h2_worker *w = H2_WORKER_LIST_FIRST(&workers->workers); - H2_WORKER_REMOVE(w); + + status = apr_threadattr_create(&workers->thread_attr, workers->pool); + if (status != APR_SUCCESS) { + return NULL; } - if (workers->pool) { - apr_pool_destroy(workers->pool); - /* workers is gone */ + + if (ap_thread_stacksize != 0) { + apr_threadattr_stacksize_set(workers->thread_attr, + ap_thread_stacksize); + ap_log_error(APLOG_MARK, APLOG_TRACE3, 0, s, + "h2_workers: using stacksize=%ld", + (long)ap_thread_stacksize); } -} - -apr_status_t h2_workers_register(h2_workers *workers, struct h2_mplx *m) -{ - apr_status_t status = apr_thread_mutex_lock(workers->lock); - if (status == APR_SUCCESS) { - ap_log_error(APLOG_MARK, APLOG_TRACE3, status, workers->s, - "h2_workers: register mplx(%ld), idle=%d", - m->id, workers->idle_workers); - if (in_list(workers, m)) { - status = APR_EAGAIN; - } - else { - H2_MPLX_LIST_INSERT_TAIL(&workers->mplxs, m); - ++workers->mplx_count; - status = APR_SUCCESS; - } - - if (workers->idle_workers > 0) { - apr_thread_cond_signal(workers->mplx_added); + + status = apr_thread_mutex_create(&workers->lock, + APR_THREAD_MUTEX_DEFAULT, + workers->pool); + if (status == APR_SUCCESS) { + n = workers->nslots = workers->max_workers; + workers->slots = apr_pcalloc(workers->pool, n * sizeof(h2_slot)); + if (workers->slots == NULL) { + workers->nslots = 0; + status = APR_ENOMEM; } - else if (status == APR_SUCCESS - && workers->worker_count < workers->max_workers) { - ap_log_error(APLOG_MARK, APLOG_TRACE3, 0, workers->s, - "h2_workers: got %d worker, adding 1", - workers->worker_count); - add_worker(workers); + for (i = 0; i < n; ++i) { + workers->slots[i].id = i; } - apr_thread_mutex_unlock(workers->lock); } - return status; -} - -apr_status_t h2_workers_unregister(h2_workers *workers, struct h2_mplx *m) -{ - apr_status_t status = apr_thread_mutex_lock(workers->lock); if (status == APR_SUCCESS) { - status = APR_EAGAIN; - if (in_list(workers, m)) { - H2_MPLX_REMOVE(m); - status = APR_SUCCESS; + /* we activate all for now, TODO: support min_workers again. + * do this in reverse for vanity reasons so slot 0 will most + * likely be at head of idle queue. */ + n = workers->max_workers; + for (i = n-1; i >= 0; --i) { + status = activate_slot(workers, &workers->slots[i]); + } + /* the rest of the slots go on the free list */ + for(i = n; i < workers->nslots; ++i) { + push_slot(&workers->free, &workers->slots[i]); } - apr_thread_mutex_unlock(workers->lock); + workers->dynamic = (workers->worker_count < workers->max_workers); } - return status; -} - -void h2_workers_set_max_idle_secs(h2_workers *workers, int idle_secs) -{ - if (idle_secs <= 0) { - ap_log_error(APLOG_MARK, APLOG_WARNING, 0, workers->s, - APLOGNO(02962) "h2_workers: max_worker_idle_sec value of %d" - " is not valid, ignored.", idle_secs); - return; + if (status == APR_SUCCESS) { + apr_pool_pre_cleanup_register(pool, workers, workers_pool_cleanup); + return workers; } - workers->max_idle_secs = idle_secs; + return NULL; } -apr_size_t h2_workers_tx_reserve(h2_workers *workers, apr_size_t count) +apr_status_t h2_workers_register(h2_workers *workers, struct h2_mplx *m) { - apr_status_t status = apr_thread_mutex_lock(workers->tx_lock); - if (status == APR_SUCCESS) { - count = H2MIN(workers->spare_tx_handles, count); - workers->spare_tx_handles -= count; - ap_log_error(APLOG_MARK, APLOG_TRACE2, 0, workers->s, - "h2_workers: reserved %d tx handles, %d/%d left", - (int)count, (int)workers->spare_tx_handles, - (int)workers->max_tx_handles); - apr_thread_mutex_unlock(workers->tx_lock); - return count; - } - return 0; + apr_status_t status = h2_fifo_push(workers->mplxs, m); + wake_idle_worker(workers); + return status; } -void h2_workers_tx_free(h2_workers *workers, apr_size_t count) +apr_status_t h2_workers_unregister(h2_workers *workers, struct h2_mplx *m) { - apr_status_t status = apr_thread_mutex_lock(workers->tx_lock); - if (status == APR_SUCCESS) { - workers->spare_tx_handles += count; - ap_log_error(APLOG_MARK, APLOG_TRACE2, 0, workers->s, - "h2_workers: freed %d tx handles, %d/%d left", - (int)count, (int)workers->spare_tx_handles, - (int)workers->max_tx_handles); - apr_thread_mutex_unlock(workers->tx_lock); - } + return h2_fifo_remove(workers->mplxs, m); } - diff -up --new-file httpd-2.4.23/modules/http2/h2_workers.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_workers.h --- httpd-2.4.23/modules/http2/h2_workers.h 2016-03-02 12:21:28.000000000 +0100 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/h2_workers.h 2017-04-10 17:04:55.000000000 +0200 @@ -27,6 +27,9 @@ struct apr_thread_cond_t; struct h2_mplx; struct h2_request; struct h2_task; +struct h2_fifo; + +struct h2_slot; typedef struct h2_workers h2_workers; @@ -37,26 +40,24 @@ struct h2_workers { int next_worker_id; int min_workers; int max_workers; - int worker_count; - int idle_workers; int max_idle_secs; - apr_size_t max_tx_handles; - apr_size_t spare_tx_handles; - - unsigned int aborted : 1; + int aborted; + int dynamic; apr_threadattr_t *thread_attr; + int nslots; + struct h2_slot *slots; + + volatile apr_uint32_t worker_count; + + struct h2_slot *free; + struct h2_slot *idle; + struct h2_slot *zombies; - APR_RING_HEAD(h2_worker_list, h2_worker) workers; - APR_RING_HEAD(h2_worker_zombies, h2_worker) zombies; - APR_RING_HEAD(h2_mplx_list, h2_mplx) mplxs; - int mplx_count; + struct h2_fifo *mplxs; struct apr_thread_mutex_t *lock; - struct apr_thread_cond_t *mplx_added; - - struct apr_thread_mutex_t *tx_lock; }; @@ -64,12 +65,7 @@ struct h2_workers { * threads. */ h2_workers *h2_workers_create(server_rec *s, apr_pool_t *pool, - int min_size, int max_size, - apr_size_t max_tx_handles); - -/* Destroy the worker pool and all its threads. - */ -void h2_workers_destroy(h2_workers *workers); + int min_size, int max_size, int idle_secs); /** * Registers a h2_mplx for task scheduling. If this h2_mplx runs @@ -83,38 +79,4 @@ apr_status_t h2_workers_register(h2_work */ apr_status_t h2_workers_unregister(h2_workers *workers, struct h2_mplx *m); -/** - * Set the amount of seconds a h2_worker should wait for new tasks - * before shutting down (if there are more than the minimum number of - * workers). - */ -void h2_workers_set_max_idle_secs(h2_workers *workers, int idle_secs); - -/** - * Reservation of file handles available for transfer between workers - * and master connections. - * - * When handling output from request processing, file handles are often - * encountered when static files are served. The most efficient way is then - * to forward the handle itself to the master connection where it can be - * read or sendfile'd to the client. But file handles are a scarce resource, - * so there needs to be a limit on how many handles are transferred this way. - * - * h2_workers keeps track of the number of reserved handles and observes a - * configurable maximum value. - * - * @param workers the workers instance - * @param count how many handles the caller wishes to reserve - * @return the number of reserved handles, may be 0. - */ -apr_size_t h2_workers_tx_reserve(h2_workers *workers, apr_size_t count); - -/** - * Return a number of reserved file handles back to the pool. The number - * overall may not exceed the numbers reserved. - * @param workers the workers instance - * @param count how many handles are returned to the pool - */ -void h2_workers_tx_free(h2_workers *workers, apr_size_t count); - #endif /* defined(__mod_h2__h2_workers__) */ diff -up --new-file httpd-2.4.23/modules/http2/mod_http2.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/mod_http2.c --- httpd-2.4.23/modules/http2/mod_http2.c 2016-04-28 14:43:02.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/mod_http2.c 2017-07-04 14:34:15.000000000 +0200 @@ -47,10 +47,10 @@ static void h2_hooks(apr_pool_t *pool); AP_DECLARE_MODULE(http2) = { STANDARD20_MODULE_STUFF, - NULL, - NULL, + h2_config_create_dir, /* func to create per dir config */ + h2_config_merge_dir, /* func to merge per dir config */ h2_config_create_svr, /* func to create per server config */ - h2_config_merge, /* func to merge per server config */ + h2_config_merge_svr, /* func to merge per server config */ h2_cmds, /* command handlers */ h2_hooks }; @@ -60,9 +60,12 @@ static int h2_h2_fixups(request_rec *r); typedef struct { unsigned int change_prio : 1; unsigned int sha256 : 1; + unsigned int inv_headers : 1; + unsigned int dyn_windows : 1; } features; static features myfeats; +static int mpm_warned; /* The module initialization. Called once as apache hook, before any multi * processing (threaded or not) happens. It is typically at least called twice, @@ -84,16 +87,20 @@ static int h2_post_config(apr_pool_t *p, const char *mod_h2_init_key = "mod_http2_init_counter"; nghttp2_info *ngh2; apr_status_t status; - const char *sep = ""; (void)plog;(void)ptemp; #ifdef H2_NG2_CHANGE_PRIO myfeats.change_prio = 1; - sep = "+"; #endif #ifdef H2_OPENSSL myfeats.sha256 = 1; #endif +#ifdef H2_NG2_INVALID_HEADER_CB + myfeats.inv_headers = 1; +#endif +#ifdef H2_NG2_LOCAL_WIN_SIZE + myfeats.dyn_windows = 1; +#endif apr_pool_userdata_get(&data, mod_h2_init_key, s->process->pool); if ( data == NULL ) { @@ -106,10 +113,12 @@ static int h2_post_config(apr_pool_t *p, ngh2 = nghttp2_version(0); ap_log_error( APLOG_MARK, APLOG_INFO, 0, s, APLOGNO(03090) - "mod_http2 (v%s, feats=%s%s%s, nghttp2 %s), initializing...", + "mod_http2 (v%s, feats=%s%s%s%s, nghttp2 %s), initializing...", MOD_HTTP2_VERSION, - myfeats.change_prio? "CHPRIO" : "", sep, - myfeats.sha256? "SHA256" : "", + myfeats.change_prio? "CHPRIO" : "", + myfeats.sha256? "+SHA256" : "", + myfeats.inv_headers? "+INVHD" : "", + myfeats.dyn_windows? "+DWINS" : "", ngh2? ngh2->version_str : "unknown"); switch (h2_conn_mpm_type()) { @@ -133,6 +142,17 @@ static int h2_post_config(apr_pool_t *p, break; } + if (!h2_mpm_supported() && !mpm_warned) { + mpm_warned = 1; + ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s, APLOGNO(10034) + "The mpm module (%s) is not supported by mod_http2. The mpm determines " + "how things are processed in your server. HTTP/2 has more demands in " + "this regard and the currently selected mpm will just not do. " + "This is an advisory warning. Your server will continue to work, but " + "the HTTP/2 protocol will be inactive.", + h2_conn_mpm_name()); + } + status = h2_h2_init(p, s); if (status == APR_SUCCESS) { status = h2_switch_init(p, s); @@ -157,15 +177,16 @@ static apr_status_t http2_req_engine_pus static apr_status_t http2_req_engine_pull(h2_req_engine *ngn, apr_read_type_e block, - apr_uint32_t capacity, + int capacity, request_rec **pr) { return h2_mplx_req_engine_pull(ngn, block, capacity, pr); } -static void http2_req_engine_done(h2_req_engine *ngn, conn_rec *r_conn) +static void http2_req_engine_done(h2_req_engine *ngn, conn_rec *r_conn, + apr_status_t status) { - h2_mplx_req_engine_done(ngn, r_conn); + h2_mplx_req_engine_done(ngn, r_conn, status); } /* Runs once per created child process. Perform any process @@ -230,8 +251,11 @@ static const char *val_H2_PUSH(apr_pool_ if (ctx) { if (r) { h2_task *task = h2_ctx_get_task(ctx); - if (task && task->request->push_policy != H2_PUSH_NONE) { - return "on"; + if (task) { + h2_stream *stream = h2_mplx_stream_get(task->mplx, task->stream_id); + if (stream && stream->push_policy != H2_PUSH_NONE) { + return "on"; + } } } else if (c && h2_session_push_enabled(ctx->session)) { @@ -265,7 +289,10 @@ static const char *val_H2_PUSHED_ON(apr_ if (ctx) { h2_task *task = h2_ctx_get_task(ctx); if (task && !H2_STREAM_CLIENT_INITIATED(task->stream_id)) { - return apr_itoa(p, task->request->initiated_on); + h2_stream *stream = h2_mplx_stream_get(task->mplx, task->stream_id); + if (stream) { + return apr_itoa(p, stream->initiated_on); + } } } return ""; @@ -334,7 +361,7 @@ static char *http2_var_lookup(apr_pool_t return (char *)vdef->lookup(p, s, c, r, ctx); } } - return ""; + return (char*)""; } static int h2_h2_fixups(request_rec *r) diff -up --new-file httpd-2.4.23/modules/http2/mod_http2.dep /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/mod_http2.dep --- httpd-2.4.23/modules/http2/mod_http2.dep 2016-04-28 23:18:43.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/mod_http2.dep 2017-04-01 03:22:41.000000000 +0200 @@ -57,57 +57,6 @@ ".\h2_util.h"\ -./h2_bucket_eoc.c : \ - "..\..\include\ap_config.h"\ - "..\..\include\ap_config_layout.h"\ - "..\..\include\ap_expr.h"\ - "..\..\include\ap_hooks.h"\ - "..\..\include\ap_mmn.h"\ - "..\..\include\ap_regex.h"\ - "..\..\include\ap_release.h"\ - "..\..\include\apache_noprobes.h"\ - "..\..\include\http_config.h"\ - "..\..\include\http_connection.h"\ - "..\..\include\http_core.h"\ - "..\..\include\http_log.h"\ - "..\..\include\httpd.h"\ - "..\..\include\os.h"\ - "..\..\include\util_cfgtree.h"\ - "..\..\include\util_filter.h"\ - "..\..\srclib\apr-util\include\apr_buckets.h"\ - "..\..\srclib\apr-util\include\apr_hooks.h"\ - "..\..\srclib\apr-util\include\apr_optional.h"\ - "..\..\srclib\apr-util\include\apr_optional_hooks.h"\ - "..\..\srclib\apr-util\include\apr_queue.h"\ - "..\..\srclib\apr-util\include\apr_uri.h"\ - "..\..\srclib\apr-util\include\apu.h"\ - "..\..\srclib\apr\include\apr.h"\ - "..\..\srclib\apr\include\apr_allocator.h"\ - "..\..\srclib\apr\include\apr_errno.h"\ - "..\..\srclib\apr\include\apr_file_info.h"\ - "..\..\srclib\apr\include\apr_file_io.h"\ - "..\..\srclib\apr\include\apr_general.h"\ - "..\..\srclib\apr\include\apr_hash.h"\ - "..\..\srclib\apr\include\apr_inherit.h"\ - "..\..\srclib\apr\include\apr_mmap.h"\ - "..\..\srclib\apr\include\apr_network_io.h"\ - "..\..\srclib\apr\include\apr_poll.h"\ - "..\..\srclib\apr\include\apr_pools.h"\ - "..\..\srclib\apr\include\apr_ring.h"\ - "..\..\srclib\apr\include\apr_tables.h"\ - "..\..\srclib\apr\include\apr_thread_mutex.h"\ - "..\..\srclib\apr\include\apr_thread_proc.h"\ - "..\..\srclib\apr\include\apr_time.h"\ - "..\..\srclib\apr\include\apr_user.h"\ - "..\..\srclib\apr\include\apr_want.h"\ - ".\h2.h"\ - ".\h2_bucket_eoc.h"\ - ".\h2_conn_io.h"\ - ".\h2_mplx.h"\ - ".\h2_private.h"\ - ".\h2_session.h"\ - - ./h2_bucket_eos.c : \ "..\..\include\ap_config.h"\ "..\..\include\ap_config_layout.h"\ @@ -283,7 +232,6 @@ ".\h2_stream.h"\ ".\h2_task.h"\ ".\h2_version.h"\ - ".\h2_worker.h"\ ".\h2_workers.h"\ @@ -339,7 +287,6 @@ "..\..\srclib\apr\include\apr_user.h"\ "..\..\srclib\apr\include\apr_want.h"\ ".\h2.h"\ - ".\h2_bucket_eoc.h"\ ".\h2_bucket_eos.h"\ ".\h2_config.h"\ ".\h2_conn_io.h"\ @@ -454,7 +401,6 @@ ".\h2_private.h"\ ".\h2_push.h"\ ".\h2_request.h"\ - ".\h2_response.h"\ ".\h2_session.h"\ ".\h2_stream.h"\ ".\h2_task.h"\ @@ -517,7 +463,6 @@ ".\h2.h"\ ".\h2_from_h1.h"\ ".\h2_private.h"\ - ".\h2_response.h"\ ".\h2_task.h"\ ".\h2_util.h"\ @@ -648,7 +593,6 @@ ".\h2_mplx.h"\ ".\h2_private.h"\ ".\h2_request.h"\ - ".\h2_response.h"\ ".\h2_task.h"\ ".\h2_util.h"\ @@ -753,11 +697,9 @@ ".\h2_ngn_shed.h"\ ".\h2_private.h"\ ".\h2_request.h"\ - ".\h2_response.h"\ ".\h2_stream.h"\ ".\h2_task.h"\ ".\h2_util.h"\ - ".\h2_worker.h"\ ".\h2_workers.h"\ ".\mod_http2.h"\ @@ -815,7 +757,6 @@ ".\h2_ngn_shed.h"\ ".\h2_private.h"\ ".\h2_request.h"\ - ".\h2_response.h"\ ".\h2_task.h"\ ".\h2_util.h"\ ".\mod_http2.h"\ @@ -870,7 +811,6 @@ ".\h2_private.h"\ ".\h2_push.h"\ ".\h2_request.h"\ - ".\h2_response.h"\ ".\h2_session.h"\ ".\h2_stream.h"\ ".\h2_util.h"\ @@ -937,58 +877,6 @@ ".\h2_util.h"\ -./h2_response.c : \ - "..\..\include\ap_config.h"\ - "..\..\include\ap_config_layout.h"\ - "..\..\include\ap_expr.h"\ - "..\..\include\ap_hooks.h"\ - "..\..\include\ap_mmn.h"\ - "..\..\include\ap_regex.h"\ - "..\..\include\ap_release.h"\ - "..\..\include\apache_noprobes.h"\ - "..\..\include\http_config.h"\ - "..\..\include\http_core.h"\ - "..\..\include\http_log.h"\ - "..\..\include\httpd.h"\ - "..\..\include\os.h"\ - "..\..\include\util_cfgtree.h"\ - "..\..\include\util_filter.h"\ - "..\..\include\util_time.h"\ - "..\..\srclib\apr-util\include\apr_buckets.h"\ - "..\..\srclib\apr-util\include\apr_hooks.h"\ - "..\..\srclib\apr-util\include\apr_optional.h"\ - "..\..\srclib\apr-util\include\apr_optional_hooks.h"\ - "..\..\srclib\apr-util\include\apr_uri.h"\ - "..\..\srclib\apr-util\include\apu.h"\ - "..\..\srclib\apr\include\apr.h"\ - "..\..\srclib\apr\include\apr_allocator.h"\ - "..\..\srclib\apr\include\apr_errno.h"\ - "..\..\srclib\apr\include\apr_file_info.h"\ - "..\..\srclib\apr\include\apr_file_io.h"\ - "..\..\srclib\apr\include\apr_general.h"\ - "..\..\srclib\apr\include\apr_hash.h"\ - "..\..\srclib\apr\include\apr_inherit.h"\ - "..\..\srclib\apr\include\apr_mmap.h"\ - "..\..\srclib\apr\include\apr_network_io.h"\ - "..\..\srclib\apr\include\apr_poll.h"\ - "..\..\srclib\apr\include\apr_pools.h"\ - "..\..\srclib\apr\include\apr_ring.h"\ - "..\..\srclib\apr\include\apr_strings.h"\ - "..\..\srclib\apr\include\apr_tables.h"\ - "..\..\srclib\apr\include\apr_thread_mutex.h"\ - "..\..\srclib\apr\include\apr_thread_proc.h"\ - "..\..\srclib\apr\include\apr_time.h"\ - "..\..\srclib\apr\include\apr_user.h"\ - "..\..\srclib\apr\include\apr_want.h"\ - ".\h2.h"\ - ".\h2_filter.h"\ - ".\h2_h2.h"\ - ".\h2_private.h"\ - ".\h2_request.h"\ - ".\h2_response.h"\ - ".\h2_util.h"\ - - ./h2_session.c : \ "..\..\include\ap_config.h"\ "..\..\include\ap_config_layout.h"\ @@ -1042,7 +930,6 @@ "..\..\srclib\apr\include\apr_user.h"\ "..\..\srclib\apr\include\apr_want.h"\ ".\h2.h"\ - ".\h2_bucket_eoc.h"\ ".\h2_bucket_eos.h"\ ".\h2_config.h"\ ".\h2_conn_io.h"\ @@ -1054,7 +941,6 @@ ".\h2_private.h"\ ".\h2_push.h"\ ".\h2_request.h"\ - ".\h2_response.h"\ ".\h2_session.h"\ ".\h2_stream.h"\ ".\h2_task.h"\ @@ -1117,7 +1003,6 @@ ".\h2_private.h"\ ".\h2_push.h"\ ".\h2_request.h"\ - ".\h2_response.h"\ ".\h2_session.h"\ ".\h2_stream.h"\ ".\h2_task.h"\ @@ -1251,7 +1136,6 @@ ".\h2_session.h"\ ".\h2_stream.h"\ ".\h2_task.h"\ - ".\h2_worker.h"\ ./h2_task_input.c : \ @@ -1361,7 +1245,6 @@ ".\h2_mplx.h"\ ".\h2_private.h"\ ".\h2_request.h"\ - ".\h2_response.h"\ ".\h2_session.h"\ ".\h2_stream.h"\ ".\h2_task.h"\ @@ -1417,67 +1300,6 @@ ".\h2_util.h"\ -./h2_worker.c : \ - "..\..\include\ap_config.h"\ - "..\..\include\ap_config_layout.h"\ - "..\..\include\ap_expr.h"\ - "..\..\include\ap_hooks.h"\ - "..\..\include\ap_mmn.h"\ - "..\..\include\ap_mpm.h"\ - "..\..\include\ap_regex.h"\ - "..\..\include\ap_release.h"\ - "..\..\include\apache_noprobes.h"\ - "..\..\include\http_config.h"\ - "..\..\include\http_core.h"\ - "..\..\include\http_log.h"\ - "..\..\include\httpd.h"\ - "..\..\include\mpm_common.h"\ - "..\..\include\os.h"\ - "..\..\include\scoreboard.h"\ - "..\..\include\util_cfgtree.h"\ - "..\..\include\util_filter.h"\ - "..\..\srclib\apr-util\include\apr_buckets.h"\ - "..\..\srclib\apr-util\include\apr_hooks.h"\ - "..\..\srclib\apr-util\include\apr_optional.h"\ - "..\..\srclib\apr-util\include\apr_optional_hooks.h"\ - "..\..\srclib\apr-util\include\apr_queue.h"\ - "..\..\srclib\apr-util\include\apr_uri.h"\ - "..\..\srclib\apr-util\include\apu.h"\ - "..\..\srclib\apr\include\apr.h"\ - "..\..\srclib\apr\include\apr_allocator.h"\ - "..\..\srclib\apr\include\apr_dso.h"\ - "..\..\srclib\apr\include\apr_errno.h"\ - "..\..\srclib\apr\include\apr_file_info.h"\ - "..\..\srclib\apr\include\apr_file_io.h"\ - "..\..\srclib\apr\include\apr_general.h"\ - "..\..\srclib\apr\include\apr_global_mutex.h"\ - "..\..\srclib\apr\include\apr_hash.h"\ - "..\..\srclib\apr\include\apr_inherit.h"\ - "..\..\srclib\apr\include\apr_mmap.h"\ - "..\..\srclib\apr\include\apr_network_io.h"\ - "..\..\srclib\apr\include\apr_poll.h"\ - "..\..\srclib\apr\include\apr_pools.h"\ - "..\..\srclib\apr\include\apr_portable.h"\ - "..\..\srclib\apr\include\apr_proc_mutex.h"\ - "..\..\srclib\apr\include\apr_ring.h"\ - "..\..\srclib\apr\include\apr_shm.h"\ - "..\..\srclib\apr\include\apr_tables.h"\ - "..\..\srclib\apr\include\apr_thread_cond.h"\ - "..\..\srclib\apr\include\apr_thread_mutex.h"\ - "..\..\srclib\apr\include\apr_thread_proc.h"\ - "..\..\srclib\apr\include\apr_time.h"\ - "..\..\srclib\apr\include\apr_user.h"\ - "..\..\srclib\apr\include\apr_want.h"\ - ".\h2.h"\ - ".\h2_conn.h"\ - ".\h2_ctx.h"\ - ".\h2_h2.h"\ - ".\h2_mplx.h"\ - ".\h2_private.h"\ - ".\h2_task.h"\ - ".\h2_worker.h"\ - - ./h2_workers.c : \ "..\..\include\ap_config.h"\ "..\..\include\ap_config_layout.h"\ @@ -1534,7 +1356,6 @@ ".\h2_mplx.h"\ ".\h2_private.h"\ ".\h2_task.h"\ - ".\h2_worker.h"\ ".\h2_workers.h"\ diff -up --new-file httpd-2.4.23/modules/http2/mod_http2.dsp /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/mod_http2.dsp --- httpd-2.4.23/modules/http2/mod_http2.dsp 2016-04-28 14:43:02.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/mod_http2.dsp 2017-04-01 03:22:41.000000000 +0200 @@ -109,10 +109,6 @@ SOURCE=./h2_bucket_beam.c # End Source File # Begin Source File -SOURCE=./h2_bucket_eoc.c -# End Source File -# Begin Source File - SOURCE=./h2_bucket_eos.c # End Source File # Begin Source File @@ -161,7 +157,7 @@ SOURCE=./h2_request.c # End Source File # Begin Source File -SOURCE=./h2_response.c +SOURCE=./h2_headers.c # End Source File # Begin Source File @@ -185,10 +181,6 @@ SOURCE=./h2_util.c # End Source File # Begin Source File -SOURCE=./h2_worker.c -# End Source File -# Begin Source File - SOURCE=./h2_workers.c # End Source File # Begin Source File diff -up --new-file httpd-2.4.23/modules/http2/mod_http2.h /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/mod_http2.h --- httpd-2.4.23/modules/http2/mod_http2.h 2016-05-23 12:55:29.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/mod_http2.h 2016-11-01 21:24:52.000000000 +0100 @@ -49,7 +49,7 @@ typedef apr_status_t http2_req_engine_in const char *id, const char *type, apr_pool_t *pool, - apr_uint32_t req_buffer_size, + apr_size_t req_buffer_size, request_rec *r, http2_output_consumed **pconsumed, void **pbaton); @@ -75,8 +75,9 @@ APR_DECLARE_OPTIONAL_FN(apr_status_t, /** * Get a new request for processing in this engine. * @param engine the engine which is done processing the slave - * @param timeout wait a maximum amount of time for a new slave, 0 will not wait - * @param pslave the slave connection that needs processing or NULL + * @param block if call should block waiting for request to come + * @param capacity how many parallel requests are acceptable + * @param pr the request that needs processing or NULL * @return APR_SUCCESS if new request was assigned * APR_EAGAIN if no new request is available * APR_EOF if engine may shut down, as no more request will be scheduled @@ -85,9 +86,10 @@ APR_DECLARE_OPTIONAL_FN(apr_status_t, APR_DECLARE_OPTIONAL_FN(apr_status_t, http2_req_engine_pull, (h2_req_engine *engine, apr_read_type_e block, - apr_uint32_t capacity, + int capacity, request_rec **pr)); APR_DECLARE_OPTIONAL_FN(void, http2_req_engine_done, (h2_req_engine *engine, - conn_rec *rconn)); + conn_rec *rconn, + apr_status_t status)); #endif diff -up --new-file httpd-2.4.23/modules/http2/mod_http2.mak /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/mod_http2.mak --- httpd-2.4.23/modules/http2/mod_http2.mak 2016-04-28 23:18:43.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/mod_http2.mak 2017-04-01 03:22:41.000000000 +0200 @@ -51,7 +51,6 @@ CLEAN : !ENDIF -@erase "$(INTDIR)\h2_alt_svc.obj" -@erase "$(INTDIR)\h2_bucket_beam.obj" - -@erase "$(INTDIR)\h2_bucket_eoc.obj" -@erase "$(INTDIR)\h2_bucket_eos.obj" -@erase "$(INTDIR)\h2_config.obj" -@erase "$(INTDIR)\h2_conn.obj" @@ -60,17 +59,16 @@ CLEAN : -@erase "$(INTDIR)\h2_filter.obj" -@erase "$(INTDIR)\h2_from_h1.obj" -@erase "$(INTDIR)\h2_h2.obj" + -@erase "$(INTDIR)\h2_headers.obj" -@erase "$(INTDIR)\h2_mplx.obj" -@erase "$(INTDIR)\h2_ngn_shed.obj" -@erase "$(INTDIR)\h2_push.obj" -@erase "$(INTDIR)\h2_request.obj" - -@erase "$(INTDIR)\h2_response.obj" -@erase "$(INTDIR)\h2_session.obj" -@erase "$(INTDIR)\h2_stream.obj" -@erase "$(INTDIR)\h2_switch.obj" -@erase "$(INTDIR)\h2_task.obj" -@erase "$(INTDIR)\h2_util.obj" - -@erase "$(INTDIR)\h2_worker.obj" -@erase "$(INTDIR)\h2_workers.obj" -@erase "$(INTDIR)\mod_http2.obj" -@erase "$(INTDIR)\mod_http2.res" @@ -130,7 +128,6 @@ LINK32_FLAGS=kernel32.lib nghttp2.lib /n LINK32_OBJS= \ "$(INTDIR)\h2_alt_svc.obj" \ "$(INTDIR)\h2_bucket_beam.obj" \ - "$(INTDIR)\h2_bucket_eoc.obj" \ "$(INTDIR)\h2_bucket_eos.obj" \ "$(INTDIR)\h2_config.obj" \ "$(INTDIR)\h2_conn.obj" \ @@ -139,17 +136,16 @@ LINK32_OBJS= \ "$(INTDIR)\h2_filter.obj" \ "$(INTDIR)\h2_from_h1.obj" \ "$(INTDIR)\h2_h2.obj" \ + "$(INTDIR)\h2_headers.obj" \ "$(INTDIR)\h2_mplx.obj" \ "$(INTDIR)\h2_ngn_shed.obj" \ "$(INTDIR)\h2_push.obj" \ "$(INTDIR)\h2_request.obj" \ - "$(INTDIR)\h2_response.obj" \ "$(INTDIR)\h2_session.obj" \ "$(INTDIR)\h2_stream.obj" \ "$(INTDIR)\h2_switch.obj" \ "$(INTDIR)\h2_task.obj" \ "$(INTDIR)\h2_util.obj" \ - "$(INTDIR)\h2_worker.obj" \ "$(INTDIR)\h2_workers.obj" \ "$(INTDIR)\mod_http2.obj" \ "$(INTDIR)\mod_http2.res" \ @@ -201,7 +197,6 @@ CLEAN : !ENDIF -@erase "$(INTDIR)\h2_alt_svc.obj" -@erase "$(INTDIR)\h2_bucket_beam.obj" - -@erase "$(INTDIR)\h2_bucket_eoc.obj" -@erase "$(INTDIR)\h2_bucket_eos.obj" -@erase "$(INTDIR)\h2_config.obj" -@erase "$(INTDIR)\h2_conn.obj" @@ -210,17 +205,16 @@ CLEAN : -@erase "$(INTDIR)\h2_filter.obj" -@erase "$(INTDIR)\h2_from_h1.obj" -@erase "$(INTDIR)\h2_h2.obj" + -@erase "$(INTDIR)\h2_headers.obj" -@erase "$(INTDIR)\h2_mplx.obj" -@erase "$(INTDIR)\h2_ngn_shed.obj" -@erase "$(INTDIR)\h2_push.obj" -@erase "$(INTDIR)\h2_request.obj" - -@erase "$(INTDIR)\h2_response.obj" -@erase "$(INTDIR)\h2_session.obj" -@erase "$(INTDIR)\h2_stream.obj" -@erase "$(INTDIR)\h2_switch.obj" -@erase "$(INTDIR)\h2_task.obj" -@erase "$(INTDIR)\h2_util.obj" - -@erase "$(INTDIR)\h2_worker.obj" -@erase "$(INTDIR)\h2_workers.obj" -@erase "$(INTDIR)\mod_http2.obj" -@erase "$(INTDIR)\mod_http2.res" @@ -280,7 +274,6 @@ LINK32_FLAGS=kernel32.lib nghttp2d.lib / LINK32_OBJS= \ "$(INTDIR)\h2_alt_svc.obj" \ "$(INTDIR)\h2_bucket_beam.obj" \ - "$(INTDIR)\h2_bucket_eoc.obj" \ "$(INTDIR)\h2_bucket_eos.obj" \ "$(INTDIR)\h2_config.obj" \ "$(INTDIR)\h2_conn.obj" \ @@ -289,17 +282,16 @@ LINK32_OBJS= \ "$(INTDIR)\h2_filter.obj" \ "$(INTDIR)\h2_from_h1.obj" \ "$(INTDIR)\h2_h2.obj" \ + "$(INTDIR)\h2_headers.obj" \ "$(INTDIR)\h2_mplx.obj" \ "$(INTDIR)\h2_ngn_shed.obj" \ "$(INTDIR)\h2_push.obj" \ "$(INTDIR)\h2_request.obj" \ - "$(INTDIR)\h2_response.obj" \ "$(INTDIR)\h2_session.obj" \ "$(INTDIR)\h2_stream.obj" \ "$(INTDIR)\h2_switch.obj" \ "$(INTDIR)\h2_task.obj" \ "$(INTDIR)\h2_util.obj" \ - "$(INTDIR)\h2_worker.obj" \ "$(INTDIR)\h2_workers.obj" \ "$(INTDIR)\mod_http2.obj" \ "$(INTDIR)\mod_http2.res" \ @@ -427,11 +419,6 @@ SOURCE=./h2_bucket_beam.c "$(INTDIR)/h2_bucket_beam.obj" : $(SOURCE) "$(INTDIR)" -SOURCE=./h2_bucket_eoc.c - -"$(INTDIR)\h2_bucket_eoc.obj" : $(SOURCE) "$(INTDIR)" - - SOURCE=./h2_bucket_eos.c "$(INTDIR)\h2_bucket_eos.obj" : $(SOURCE) "$(INTDIR)" @@ -472,6 +459,11 @@ SOURCE=./h2_h2.c "$(INTDIR)\h2_h2.obj" : $(SOURCE) "$(INTDIR)" +SOURCE=./h2_headers.c + +"$(INTDIR)\h2_headers.obj" : $(SOURCE) "$(INTDIR)" + + SOURCE=./h2_mplx.c "$(INTDIR)\h2_mplx.obj" : $(SOURCE) "$(INTDIR)" @@ -492,11 +484,6 @@ SOURCE=./h2_request.c "$(INTDIR)\h2_request.obj" : $(SOURCE) "$(INTDIR)" -SOURCE=./h2_response.c - -"$(INTDIR)\h2_response.obj" : $(SOURCE) "$(INTDIR)" - - SOURCE=./h2_session.c "$(INTDIR)\h2_session.obj" : $(SOURCE) "$(INTDIR)" @@ -522,11 +509,6 @@ SOURCE=./h2_util.c "$(INTDIR)\h2_util.obj" : $(SOURCE) "$(INTDIR)" -SOURCE=./h2_worker.c - -"$(INTDIR)\h2_worker.obj" : $(SOURCE) "$(INTDIR)" - - SOURCE=./h2_workers.c "$(INTDIR)\h2_workers.obj" : $(SOURCE) "$(INTDIR)" diff -up --new-file httpd-2.4.23/modules/http2/mod_proxy_http2.c /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/mod_proxy_http2.c --- httpd-2.4.23/modules/http2/mod_proxy_http2.c 2016-06-28 15:36:22.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/mod_proxy_http2.c 2017-04-10 17:04:55.000000000 +0200 @@ -26,6 +26,8 @@ #include "h2_version.h" #include "h2_proxy_session.h" +#define H2MIN(x,y) ((x) < (y) ? (x) : (y)) + static void register_hook(apr_pool_t *p); AP_DECLARE_MODULE(proxy_http2) = { @@ -44,9 +46,10 @@ static apr_status_t (*req_engine_push)(c http2_req_engine_init *einit); static apr_status_t (*req_engine_pull)(h2_req_engine *engine, apr_read_type_e block, - apr_uint32_t capacity, + int capacity, request_rec **pr); -static void (*req_engine_done)(h2_req_engine *engine, conn_rec *r_conn); +static void (*req_engine_done)(h2_req_engine *engine, conn_rec *r_conn, + apr_status_t status); typedef struct h2_proxy_ctx { conn_rec *owner; @@ -63,9 +66,9 @@ typedef struct h2_proxy_ctx { const char *engine_id; const char *engine_type; apr_pool_t *engine_pool; - apr_uint32_t req_buffer_size; - request_rec *next; - apr_size_t capacity; + apr_size_t req_buffer_size; + h2_proxy_fifo *requests; + int capacity; unsigned standalone : 1; unsigned is_ssl : 1; @@ -168,7 +171,7 @@ static int proxy_http2_canon(request_rec path = url; /* this is the raw path */ } else { - path = ap_proxy_canonenc(r->pool, url, strlen(url), + path = ap_proxy_canonenc(r->pool, url, (int)strlen(url), enc_path, 0, r->proxyreq); search = r->args; } @@ -210,43 +213,30 @@ static apr_status_t proxy_engine_init(h2 const char *id, const char *type, apr_pool_t *pool, - apr_uint32_t req_buffer_size, + apr_size_t req_buffer_size, request_rec *r, http2_output_consumed **pconsumed, void **pctx) { h2_proxy_ctx *ctx = ap_get_module_config(r->connection->conn_config, &proxy_http2_module); - if (ctx) { - conn_rec *c = ctx->owner; - h2_proxy_ctx *nctx; - - /* we need another lifetime for this. If we do not host - * an engine, the context lives in r->pool. Since we expect - * to server more than r, we need to live longer */ - nctx = apr_pcalloc(pool, sizeof(*nctx)); - if (nctx == NULL) { - return APR_ENOMEM; - } - memcpy(nctx, ctx, sizeof(*nctx)); - ctx = nctx; - ctx->pool = pool; - ctx->engine = engine; - ctx->engine_id = id; - ctx->engine_type = type; - ctx->engine_pool = pool; - ctx->req_buffer_size = req_buffer_size; - ctx->capacity = 100; - - ap_set_module_config(c->conn_config, &proxy_http2_module, ctx); - - *pconsumed = out_consumed; - *pctx = ctx; - return APR_SUCCESS; - } - ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(03368) - "h2_proxy_session, engine init, no ctx found"); - return APR_ENOTIMPL; + if (!ctx) { + ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(03368) + "h2_proxy_session, engine init, no ctx found"); + return APR_ENOTIMPL; + } + + ctx->pool = pool; + ctx->engine = engine; + ctx->engine_id = id; + ctx->engine_type = type; + ctx->engine_pool = pool; + ctx->req_buffer_size = req_buffer_size; + ctx->capacity = H2MIN(100, h2_proxy_fifo_capacity(ctx->requests)); + + *pconsumed = out_consumed; + *pctx = ctx; + return APR_SUCCESS; } static apr_status_t add_request(h2_proxy_session *session, request_rec *r) @@ -269,65 +259,74 @@ static apr_status_t add_request(h2_proxy return status; } -static void request_done(h2_proxy_session *session, request_rec *r, - int complete, int touched) +static void request_done(h2_proxy_ctx *ctx, request_rec *r, + apr_status_t status, int touched) { - h2_proxy_ctx *ctx = session->user_data; const char *task_id = apr_table_get(r->connection->notes, H2_TASK_ID_NOTE); - - if (!complete && !touched) { - /* untouched request, need rescheduling */ - if (req_engine_push && is_h2 && is_h2(ctx->owner)) { - if (req_engine_push(ctx->engine_type, r, NULL) == APR_SUCCESS) { - /* push to engine */ - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, r->connection, - APLOGNO(03369) - "h2_proxy_session(%s): rescheduled request %s", - ctx->engine_id, task_id); - return; - } - } - } - - if (r == ctx->rbase && complete) { - ctx->r_status = APR_SUCCESS; - } - - if (complete) { - if (req_engine_done && ctx->engine) { - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, r->connection, - APLOGNO(03370) - "h2_proxy_session(%s): finished request %s", + + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, r->connection, + "h2_proxy_session(%s): request done %s, touched=%d", + ctx->engine_id, task_id, touched); + if (status != APR_SUCCESS) { + if (!touched) { + /* untouched request, need rescheduling */ + status = h2_proxy_fifo_push(ctx->requests, r); + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, r->connection, + APLOGNO(03369) + "h2_proxy_session(%s): rescheduled request %s", ctx->engine_id, task_id); - req_engine_done(ctx->engine, r->connection); + return; } - } - else { - if (req_engine_done && ctx->engine) { - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, r->connection, - APLOGNO(03371) - "h2_proxy_session(%s): failed request %s", - ctx->engine_id, task_id); - req_engine_done(ctx->engine, r->connection); + else { + const char *uri; + uri = apr_uri_unparse(r->pool, &r->parsed_uri, 0); + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, r->connection, + APLOGNO(03471) "h2_proxy_session(%s): request %s -> %s " + "not complete, cannot repeat", + ctx->engine_id, task_id, uri); } } + + if (r == ctx->rbase) { + ctx->r_status = ((status == APR_SUCCESS)? APR_SUCCESS + : HTTP_SERVICE_UNAVAILABLE); + } + + if (req_engine_done && ctx->engine) { + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, r->connection, + APLOGNO(03370) + "h2_proxy_session(%s): finished request %s", + ctx->engine_id, task_id); + req_engine_done(ctx->engine, r->connection, status); + } } +static void session_req_done(h2_proxy_session *session, request_rec *r, + apr_status_t status, int touched) +{ + request_done(session->user_data, r, status, touched); +} + static apr_status_t next_request(h2_proxy_ctx *ctx, int before_leave) { - if (ctx->next) { + if (h2_proxy_fifo_count(ctx->requests) > 0) { return APR_SUCCESS; } else if (req_engine_pull && ctx->engine) { apr_status_t status; + request_rec *r = NULL; + status = req_engine_pull(ctx->engine, before_leave? APR_BLOCK_READ: APR_NONBLOCK_READ, - ctx->capacity, &ctx->next); - ap_log_cerror(APLOG_MARK, APLOG_TRACE2, status, ctx->owner, - "h2_proxy_engine(%s): pulled request (%s) %s", - ctx->engine_id, - before_leave? "before leave" : "regular", - (ctx->next? ctx->next->the_request : "NULL")); + ctx->capacity, &r); + if (status == APR_SUCCESS && r) { + ap_log_cerror(APLOG_MARK, APLOG_TRACE3, status, ctx->owner, + "h2_proxy_engine(%s): pulled request (%s) %s", + ctx->engine_id, + before_leave? "before leave" : "regular", + r->the_request); + h2_proxy_fifo_push(ctx->requests, r); + } return APR_STATUS_IS_EAGAIN(status)? APR_SUCCESS : status; } return APR_EOF; @@ -335,15 +334,19 @@ static apr_status_t next_request(h2_prox static apr_status_t proxy_engine_run(h2_proxy_ctx *ctx) { apr_status_t status = OK; + int h2_front; + request_rec *r; /* Step Four: Send the Request in a new HTTP/2 stream and * loop until we got the response or encounter errors. */ ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, ctx->owner, "eng(%s): setup session", ctx->engine_id); - ctx->session = h2_proxy_session_setup(ctx->engine_id, ctx->p_conn, ctx->conf, - 30, h2_log2(ctx->req_buffer_size), - request_done); + h2_front = is_h2? is_h2(ctx->owner) : 0; + ctx->session = h2_proxy_session_setup(ctx->engine_id, ctx->p_conn, ctx->conf, + h2_front, 30, + h2_proxy_log2((int)ctx->req_buffer_size), + session_req_done); if (!ctx->session) { ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, ctx->owner, APLOGNO(03372) "session unavailable"); @@ -354,10 +357,9 @@ static apr_status_t proxy_engine_run(h2_ "eng(%s): run session %s", ctx->engine_id, ctx->session->id); ctx->session->user_data = ctx; - while (1) { - if (ctx->next) { - add_request(ctx->session, ctx->next); - ctx->next = NULL; + while (!ctx->owner->aborted) { + if (APR_SUCCESS == h2_proxy_fifo_try_pull(ctx->requests, (void**)&r)) { + add_request(ctx->session, r); } status = h2_proxy_session_process(ctx->session); @@ -367,7 +369,8 @@ static apr_status_t proxy_engine_run(h2_ /* ongoing processing, call again */ if (ctx->session->remote_max_concurrent > 0 && ctx->session->remote_max_concurrent != ctx->capacity) { - ctx->capacity = ctx->session->remote_max_concurrent; + ctx->capacity = H2MIN((int)ctx->session->remote_max_concurrent, + h2_proxy_fifo_capacity(ctx->requests)); } s2 = next_request(ctx, 0); if (s2 == APR_ECONNABORTED) { @@ -375,10 +378,16 @@ static apr_status_t proxy_engine_run(h2_ ap_log_cerror(APLOG_MARK, APLOG_DEBUG, s2, ctx->owner, APLOGNO(03374) "eng(%s): pull request", ctx->engine_id); - status = s2; + /* give notice that we're leaving and cancel all ongoing + * streams. */ + next_request(ctx, 1); + h2_proxy_session_cancel_all(ctx->session); + h2_proxy_session_process(ctx->session); + status = ctx->r_status = APR_SUCCESS; break; } - if (!ctx->next && h2_ihash_empty(ctx->session->streams)) { + if ((h2_proxy_fifo_count(ctx->requests) == 0) + && h2_proxy_ihash_empty(ctx->session->streams)) { break; } } @@ -392,7 +401,7 @@ static apr_status_t proxy_engine_run(h2_ * a) be reopened on the new session iff safe to do so * b) reported as done (failed) otherwise */ - h2_proxy_session_cleanup(ctx->session, request_done); + h2_proxy_session_cleanup(ctx->session, session_req_done); break; } } @@ -403,7 +412,7 @@ static apr_status_t proxy_engine_run(h2_ return status; } -static h2_proxy_ctx *push_request_somewhere(h2_proxy_ctx *ctx) +static apr_status_t push_request_somewhere(h2_proxy_ctx *ctx, request_rec *r) { conn_rec *c = ctx->owner; const char *engine_type, *hostname; @@ -413,21 +422,15 @@ static h2_proxy_ctx *push_request_somewh engine_type = apr_psprintf(ctx->pool, "proxy_http2 %s%s", hostname, ctx->server_portstr); - if (c->master && req_engine_push && ctx->next && is_h2 && is_h2(c)) { + if (c->master && req_engine_push && r && is_h2 && is_h2(c)) { /* If we are have req_engine capabilities, push the handling of this * request (e.g. slave connection) to a proxy_http2 engine which * uses the same backend. We may be called to create an engine * ourself. */ - if (req_engine_push(engine_type, ctx->next, proxy_engine_init) - == APR_SUCCESS) { - /* to renew the lifetime, we might have set a new ctx */ - ctx = ap_get_module_config(c->conn_config, &proxy_http2_module); + if (req_engine_push(engine_type, r, proxy_engine_init) == APR_SUCCESS) { if (ctx->engine == NULL) { - /* Another engine instance has taken over processing of this - * request. */ - ctx->r_status = SUSPENDED; - ctx->next = NULL; - return ctx; + /* request has been assigned to an engine in another thread */ + return SUSPENDED; } } } @@ -448,7 +451,8 @@ static h2_proxy_ctx *push_request_somewh ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, c, "H2: hosting engine %s", ctx->engine_id); } - return ctx; + + return h2_proxy_fifo_push(ctx->requests, r); } static int proxy_http2_handler(request_rec *r, @@ -465,7 +469,7 @@ static int proxy_http2_handler(request_r apr_status_t status; h2_proxy_ctx *ctx; apr_uri_t uri; - int reconnected = 0; + int reconnects = 0; /* find the scheme */ if ((url[0] != 'h' && url[0] != 'H') || url[1] != '2') { @@ -490,6 +494,7 @@ static int proxy_http2_handler(request_r default: return DECLINED; } + ctx = apr_pcalloc(r->pool, sizeof(*ctx)); ctx->owner = r->connection; ctx->pool = r->pool; @@ -501,8 +506,9 @@ static int proxy_http2_handler(request_r ctx->conf = conf; ctx->flushall = apr_table_get(r->subprocess_env, "proxy-flushall")? 1 : 0; ctx->r_status = HTTP_SERVICE_UNAVAILABLE; - ctx->next = r; - r = NULL; + + h2_proxy_fifo_set_create(&ctx->requests, ctx->pool, 100); + ap_set_module_config(ctx->owner->conn_config, &proxy_http2_module, ctx); /* scheme says, this is for us. */ @@ -548,10 +554,11 @@ run_connect: /* If we are not already hosting an engine, try to push the request * to an already existing engine or host a new engine here. */ - if (!ctx->engine) { - ctx = push_request_somewhere(ctx); + if (r && !ctx->engine) { + ctx->r_status = push_request_somewhere(ctx, r); + r = NULL; if (ctx->r_status == SUSPENDED) { - /* request was pushed to another engine */ + /* request was pushed to another thread, leave processing here */ goto cleanup; } } @@ -561,37 +568,39 @@ run_connect: * backend->hostname. */ if (ap_proxy_connect_backend(ctx->proxy_func, ctx->p_conn, ctx->worker, ctx->server)) { - ap_log_cerror(APLOG_MARK, APLOG_ERR, 0, ctx->owner, APLOGNO(03352) + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, ctx->owner, APLOGNO(03352) "H2: failed to make connection to backend: %s", ctx->p_conn->hostname); - goto cleanup; + goto reconnect; } /* Step Three: Create conn_rec for the socket we have open now. */ if (!ctx->p_conn->connection) { - ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, ctx->owner, APLOGNO(03353) - "setup new connection: is_ssl=%d %s %s %s", - ctx->p_conn->is_ssl, ctx->p_conn->ssl_hostname, - locurl, ctx->p_conn->hostname); if ((status = ap_proxy_connection_create(ctx->proxy_func, ctx->p_conn, ctx->owner, ctx->server)) != OK) { - goto cleanup; + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, ctx->owner, APLOGNO(03353) + "setup new connection: is_ssl=%d %s %s %s", + ctx->p_conn->is_ssl, ctx->p_conn->ssl_hostname, + locurl, ctx->p_conn->hostname); + goto reconnect; } - /* - * On SSL connections set a note on the connection what CN is - * requested, such that mod_ssl can check if it is requested to do - * so. - */ - if (ctx->p_conn->ssl_hostname) { - apr_table_setn(ctx->p_conn->connection->notes, - "proxy-request-hostname", ctx->p_conn->ssl_hostname); - } - - if (ctx->is_ssl) { - apr_table_setn(ctx->p_conn->connection->notes, - "proxy-request-alpn-protos", "h2"); + if (!ctx->p_conn->data) { + /* New conection: set a note on the connection what CN is + * requested and what protocol we want */ + if (ctx->p_conn->ssl_hostname) { + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, status, ctx->owner, + "set SNI to %s for (%s)", + ctx->p_conn->ssl_hostname, + ctx->p_conn->hostname); + apr_table_setn(ctx->p_conn->connection->notes, + "proxy-request-hostname", ctx->p_conn->ssl_hostname); + } + if (ctx->is_ssl) { + apr_table_setn(ctx->p_conn->connection->notes, + "proxy-request-alpn-protos", "h2"); + } } } @@ -609,8 +618,8 @@ run_session: ctx->engine = NULL; } -cleanup: - if (!reconnected && ctx->engine && next_request(ctx, 1) == APR_SUCCESS) { +reconnect: + if (next_request(ctx, 1) == APR_SUCCESS) { /* Still more to do, tear down old conn and start over */ if (ctx->p_conn) { ctx->p_conn->close = 1; @@ -619,10 +628,16 @@ cleanup: ap_proxy_release_connection(ctx->proxy_func, ctx->p_conn, ctx->server); ctx->p_conn = NULL; } - reconnected = 1; /* we do this only once, then fail */ - goto run_connect; + ++reconnects; + if (reconnects < 5 && !ctx->owner->aborted) { + goto run_connect; + } + ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, ctx->owner, APLOGNO(10023) + "giving up after %d reconnects, %d requests todo", + reconnects, h2_proxy_fifo_count(ctx->requests)); } +cleanup: if (ctx->p_conn) { if (status != APR_SUCCESS) { /* close socket when errors happened or session shut down (EOF) */ @@ -634,6 +649,11 @@ cleanup: ctx->p_conn = NULL; } + /* Any requests will still have need to fail */ + while (APR_SUCCESS == h2_proxy_fifo_try_pull(ctx->requests, (void**)&r)) { + request_done(ctx, r, HTTP_SERVICE_UNAVAILABLE, 1); + } + ap_set_module_config(ctx->owner->conn_config, &proxy_http2_module, NULL); ap_log_cerror(APLOG_MARK, APLOG_DEBUG, status, ctx->owner, APLOGNO(03377) "leaving handler"); diff -up --new-file httpd-2.4.23/modules/http2/NWGNUmod_http2 /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/NWGNUmod_http2 --- httpd-2.4.23/modules/http2/NWGNUmod_http2 2016-06-28 21:57:30.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/NWGNUmod_http2 2017-03-31 21:41:01.000000000 +0200 @@ -186,7 +186,6 @@ TARGET_lib = \ FILES_nlm_objs = \ $(OBJDIR)/h2_alt_svc.o \ $(OBJDIR)/h2_bucket_beam.o \ - $(OBJDIR)/h2_bucket_eoc.o \ $(OBJDIR)/h2_bucket_eos.o \ $(OBJDIR)/h2_config.o \ $(OBJDIR)/h2_conn.o \ @@ -199,13 +198,12 @@ FILES_nlm_objs = \ $(OBJDIR)/h2_ngn_shed.o \ $(OBJDIR)/h2_push.o \ $(OBJDIR)/h2_request.o \ - $(OBJDIR)/h2_response.o \ + $(OBJDIR)/h2_headers.o \ $(OBJDIR)/h2_session.o \ $(OBJDIR)/h2_stream.o \ $(OBJDIR)/h2_switch.o \ $(OBJDIR)/h2_task.o \ $(OBJDIR)/h2_util.o \ - $(OBJDIR)/h2_worker.o \ $(OBJDIR)/h2_workers.o \ $(OBJDIR)/mod_http2.o \ $(EOLIST) @@ -355,25 +353,6 @@ $(OBJDIR)/mod_http2.imp : NWGNUmod_http2 @echo $(DL)GEN $@$(DL) @echo $(DL) (HTTP2)$(DL) > $@ @echo $(DL) http2_module,$(DL) >> $@ - @echo $(DL) h2_ihash_add,$(DL) >> $@ - @echo $(DL) h2_ihash_clear,$(DL) >> $@ - @echo $(DL) h2_ihash_count,$(DL) >> $@ - @echo $(DL) h2_ihash_create,$(DL) >> $@ - @echo $(DL) h2_ihash_empty,$(DL) >> $@ - @echo $(DL) h2_ihash_iter,$(DL) >> $@ - @echo $(DL) h2_ihash_remove,$(DL) >> $@ - @echo $(DL) h2_iq_add,$(DL) >> $@ - @echo $(DL) h2_iq_create,$(DL) >> $@ - @echo $(DL) h2_iq_remove,$(DL) >> $@ - @echo $(DL) h2_log2,$(DL) >> $@ - @echo $(DL) h2_proxy_res_ignore_header,$(DL) >> $@ - @echo $(DL) h2_headers_add_h1,$(DL) >> $@ - @echo $(DL) h2_req_create,$(DL) >> $@ - @echo $(DL) h2_req_createn,$(DL) >> $@ - @echo $(DL) h2_req_make,$(DL) >> $@ - @echo $(DL) h2_util_camel_case_header,$(DL) >> $@ - @echo $(DL) h2_util_frame_print,$(DL) >> $@ - @echo $(DL) h2_util_ngheader_make_req,$(DL) >> $@ @echo $(DL) nghttp2_is_fatal,$(DL) >> $@ @echo $(DL) nghttp2_option_del,$(DL) >> $@ @echo $(DL) nghttp2_option_new,$(DL) >> $@ @@ -400,6 +379,7 @@ $(OBJDIR)/mod_http2.imp : NWGNUmod_http2 @echo $(DL) nghttp2_session_want_write,$(DL) >> $@ @echo $(DL) nghttp2_strerror,$(DL) >> $@ @echo $(DL) nghttp2_submit_goaway,$(DL) >> $@ + @echo $(DL) nghttp2_submit_ping,$(DL) >> $@ @echo $(DL) nghttp2_submit_request,$(DL) >> $@ @echo $(DL) nghttp2_submit_rst_stream,$(DL) >> $@ @echo $(DL) nghttp2_submit_settings,$(DL) >> $@ diff -up --new-file httpd-2.4.23/modules/http2/NWGNUproxyht2 /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/NWGNUproxyht2 --- httpd-2.4.23/modules/http2/NWGNUproxyht2 2016-06-28 21:57:30.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/NWGNUproxyht2 2016-08-31 11:14:39.000000000 +0200 @@ -182,6 +182,7 @@ TARGET_lib = \ FILES_nlm_objs = \ $(OBJDIR)/mod_proxy_http2.o \ $(OBJDIR)/h2_proxy_session.o \ + $(OBJDIR)/h2_proxy_util.o \ $(EOLIST) # diff -up --new-file httpd-2.4.23/modules/http2/README.h2 /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/README.h2 --- httpd-2.4.23/modules/http2/README.h2 2015-09-28 21:30:00.000000000 +0200 +++ /home/pgajdos/osc/Apache/apache2/httpd-2.4.29/modules/http2/README.h2 2016-08-25 14:48:18.000000000 +0200 @@ -60,7 +60,7 @@ TLS CONFIGURATION If you want to use HTTP/2 with a browser, most modern browsers will support it without further configuration. However, browsers so far only support -HTTP/2 over TLS and are expecially picky about the certificate and +HTTP/2 over TLS and are especially picky about the certificate and encryption ciphers used. Server admins may look for up-to-date information about "modern" TLS
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