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This simple program prepares a TCP connection between two ends and allows to perform various operations on them such as send, recv, poll, shutdown, close, reset, etc. It takes care of remaining particularly silent to help inspection via strace, though it can also be verbose and report status, errno, and poll events. It delays acceptation of the incoming server-side connection so that it's even possible to test the poll status on a listener with a pending connection, or to close the connection without accepting it and inspect the effect on the client. Actions are executed in the command line order as they are parsed, they may be grouped using commas when they are performed on the same socket. Example showing a successful recv() of pending data before a pending error: $ ./poll -v -l pol,acc,pol -c snd,shw -s pol,rcv,pol,rcv,pol,snd,lin,clo -c pol,rcv,pol,rcv,pol #### BEGIN #### cmd #1 stp #1: do_pol(3): ret=1 ev=0x1 (IN) cmd #1 stp #2: do_acc(3): ret=5 cmd #1 stp #3: do_pol(3): ret=0 ev=0 cmd #2 stp #1: do_snd(4): ret=3 cmd #2 stp #2: do_shw(4): ret=0 cmd #3 stp #1: do_pol(5): ret=1 ev=0x2005 (IN OUT RDHUP) cmd #3 stp #2: do_rcv(5): ret=3 cmd #3 stp #3: do_pol(5): ret=1 ev=0x2005 (IN OUT RDHUP) cmd #3 stp #4: do_rcv(5): ret=0 cmd #3 stp #5: do_pol(5): ret=1 ev=0x2005 (IN OUT RDHUP) cmd #3 stp #6: do_snd(5): ret=3 cmd #3 stp #7: do_lin(5): ret=0 cmd #3 stp #8: do_clo(5): ret=0 cmd #4 stp #1: do_pol(4): ret=1 ev=0x201d (IN OUT ERR HUP RDHUP) cmd #4 stp #2: do_rcv(4): ret=3 cmd #4 stp #3: do_pol(4): ret=1 ev=0x201d (IN OUT ERR HUP RDHUP) cmd #4 stp #4: do_rcv(4): ret=-1 (Connection reset by peer) cmd #4 stp #5: do_pol(4): ret=1 ev=0x2015 (IN OUT HUP RDHUP) #### END ####
The HAProxy documentation has been split into a number of different files for ease of use. Please refer to the following files depending on what you're looking for : - INSTALL for instructions on how to build and install HAProxy - BRANCHES to understand the project's life cycle and what version to use - LICENSE for the project's license - CONTRIBUTING for the process to follow to submit contributions The more detailed documentation is located into the doc/ directory : - doc/intro.txt for a quick introduction on HAProxy - doc/configuration.txt for the configuration's reference manual - doc/lua.txt for the Lua's reference manual - doc/SPOE.txt for how to use the SPOE engine - doc/network-namespaces.txt for how to use network namespaces under Linux - doc/management.txt for the management guide - doc/regression-testing.txt for how to use the regression testing suite - doc/peers.txt for the peers protocol reference - doc/coding-style.txt for how to adopt HAProxy's coding style - doc/internals for developer-specific documentation (not all up to date)