a78a04cfae
This commit implements support for idle-ping on the backend side. First, a new server keyword "idle-ping" is defined in configuration parsing. It is used to set the corresponding new server member. The second part of this commit implements idle-ping support on H2 MUX. A new inlined function conn_idle_ping() is defined to access connection idle-ping value. Two new connection flags are defined H2_CF_IDL_PING and H2_CF_IDL_PING_SENT. The first one is set for idle connections via h2c_update_timeout(). On h2_timeout_task() handler, if first flag is set, instead of releasing the connection as before, the second flag is set and tasklet is scheduled. As both flags are now set, h2_process_mux() will proceed to PING emission. The timer has also been rearmed to the idle-ping value. If a PING ACK is received before next timeout, connection timer is refreshed. Else, the connection is released, as with timer expiration. Also of importance, special care is needed when a backend connection is going to idle. In this case, idle-ping timer must be rearmed. Thus a new invokation of h2c_update_timeout() is performed on h2_detach().
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.