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In si_update_rx() function, the reads may be blocked because we explicitly don't want to read or because of a lack of room in the input buffer. The first condition is valid. However the second one only test if the channel is empty or not. It means the reads are blocked if there are still some output data in the input channel, in its buffer or its pipe. This condition is not accurate. The reads must not be blocked if the channel can still receive data. Thus instead of relying on channel_is_empty() function, we now call channel_may_recv(). This patch is especially useful to be able to catch read0 on client side when we are waiting for a connection to the server, when abortonclose option is enabled. Otherwise, the client abort is not detected. This patch depends on "MINOR: channel: Rely on HTX version if appropriate in channel_may_recv()". Both must be backported as far as 2.0 after a period of observation to be sure nothing broke.
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)