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TASK_WOKEN_MSG only says "someone sent you a message" but doesn't convey any info about the message. TASK_WOKEN_OTHER says "you're woken for another reason" but doesn't tell which one. Most often they're used as-is by the task handlers to report very specific situations. For some important control notifications, having the ability to modulate the message a little bit is useful, so let's define two user event types UEVT1 and UEVT2 to be used in conjunction with TASK_WOKEN_MSG or _OTHER so that the application can know that a specific condition was explicitly requested. It will be used this way: task_wakeup(s->task, TASK_WOKEN_MSG | TASK_F_UEVT1); or: task_wakeup(s->task, TASK_WOKEN_OTHER | TASK_F_UEVT2); Since events are cumulative, keep in mind not to consider a 3rd value as the combination of EVT1+EVT2; these really mean that the two events appeared (though in unspecified order).
HAProxy
HAProxy is a free, very fast and reliable reverse-proxy offering high availability, load balancing, and proxying for TCP and HTTP-based applications.
Installation
The INSTALL file describes how to build HAProxy. A list of packages is also available on the wiki.
Getting help
The discourse and the mailing-list are available for questions or configuration assistance. You can also use the slack or IRC channel. Please don't use the issue tracker for these.
The issue tracker is only for bug reports or feature requests.
Documentation
The HAProxy documentation has been split into a number of different files for ease of use. It is available in text format as well as HTML. The wiki is also meant to replace the old architecture guide.
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)
License
HAProxy is licensed under GPL 2 or any later version, the headers under LGPL 2.1. See the LICENSE file for a more detailed explanation.