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When a listener is suspended, we expect that it may not process any data for the time it is suspended. Yet for named UNIX socket, as the suspend operation is a no-op at the proto level, recv events on the socket may still be processed by the polling loop. This is quite disturbing as someone may rely on a paused proxy being harmless, which is true for all protos except for named UNIX sockets. To fix this behavior, we explicitely disable io recv events when suspending a named UNIX socket listener (we call disable() method on the listener). The io recv events will automatically be restored when the listener is resumed since the l->enable() method is called at the end of the resume() operation. This could be backported up to 2.4 after a reasonable observation period to make sure that this change doesn't cause unwanted side-effects.
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)