cstream is a general-purpose stream-handling tool like UNIX dd, usually used in
command line-constructed pipes. Features include sane command line switch
syntax, exact throughput limiting on the incoming side, precise throughput
reporting, SIGUSR1 causes a throughput report before end-of-file, built-in
support to write its PID to a file, built-in support for fifos, IPv6 support,
and built-in data creation and sink.