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Till now, we used to call pause_proxy()/resume_proxy() to enable/disable processing on a proxy, which is used during soft reloads. But since we want to drive this process from the listeners themselves, we have to instead proceed the other way around so that when we enable/disable a listener, it checks if it changed anything for the proxy and notifies about updates at this level. The detection is made using li_ready=0 for pause(), and li_paused=0 for resume(). Note that we must not include any test for li_bound because this state is seen by processes which share the listener with another one and which must not act on it since the other process will do it. As such the socket behind the FD will automatically be paused and resume without its local state changing, but this is the limit of a multi-process system with shared listeners.
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)