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__task_queue() must absolutely not be called with TICK_ETERNITY or it will place a never-expiring node upfront in the timers queue, preventing any timer from expiring until the process is restarted. Code was found to cause this using "task_schedule(task, now_ms)" which does this one millisecond every 49.7 days, so let's add a condition against this. It must never trigger since any process susceptible to trigger it would already accumulate tasks until it dies. An extra test was added in wake_expired_tasks() to detect tasks whose timeout would have been changed after being queued. An improvement over this could be in the future to use a non-scalar type (union/struct) for expiration dates so as to avoid the risk of using them directly like this. But now_ms is already such a valid time and this specific construct would still not be caught. This could even be backported to stable versions to help detect other occurrences if any.
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)