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c594039225
It's pointless to start to perform a recv() call on a connection that is not yet established. The only purpose used to be to subscribe but that causes many extra syscalls when we know we can do it later. This patch only attempts a read if the connection is established or if there is no write planed, since we want to be certain to be called. And in wake_srv_chk() we continue to attempt to read if the reader was not subscribed, so as to perform the first read attempt. In case a first result is provided, __event_srv_chk_r() will not do anything anyway so this is totally harmless in this case. This fix requires that commit "BUG/MINOR: checks: make __event_chk_srv_r() report success before closing" is applied before, otherwise it will break some checks (notably SSL) by doing them again after the connection is shut down. This completes the fixes on the checks described in issue #253 by roughly cutting the number of syscalls in half. It must be backported to 2.0.
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)