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HAProxy - Load balancer
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Frédéric Lécaille 645635da84 MINOR: peers: Add a message for heartbeat. 
This patch implements peer heartbeat feature to prevent any haproxy peer
from reconnecting too often, consuming sockets for nothing.

To do so, we add PEER_MSG_CTRL_HEARTBEAT new message to PEER_MSG_CLASS_CONTROL peers
control class of messages. A ->heartbeat field is added to peer structs
to store the heatbeat timeout value which is handled by the same function as for ->reconnect
to control the session timeouts. A 2-bytes heartbeat message is sent every 3s when
no updates have to be sent. This way, the peer which receives such a message is sure
the remote peer is still alive. So, it resets the ->reconnect peer session
timeout to its initial value (5s). This prevents any reconnection to an
already connected alive peer.
2019-03-01 09:33:26 +01:00
.github/ISSUE_TEMPLATE DOC: add github issue templates 2019-01-17 22:53:55 +01:00
contrib CONTRIB: contrib/prometheus-exporter: Add a Prometheus exporter for HAProxy 2019-02-08 13:55:21 +01:00
doc MEDIUM: config: don't enforce a low frontend maxconn value anymore 2019-02-28 17:05:32 +01:00
ebtree CLEANUP: fix typos in comments in ebtree 2018-11-18 22:23:15 +01:00
examples [RELEASE] Released version 2.0-dev1 2019-02-26 16:43:49 +01:00
include MINOR: peers: Add a message for heartbeat. 2019-03-01 09:33:26 +01:00
reg-tests BUG/MEDIUM: compression: Rewrite strong ETags 2019-01-29 20:26:06 +01:00
scripts SCRIPTS: add the issue tracker URL to the announce script 2019-01-29 06:51:16 +01:00
src MINOR: peers: Add a message for heartbeat. 2019-03-01 09:33:26 +01:00
tests CLEANUP: fix a misspell in tests/filltab25.c 2018-11-18 22:23:15 +01:00
.gitignore DOC: split the README into README + INSTALL 2018-12-16 22:30:57 +01:00
CHANGELOG [RELEASE] Released version 2.0-dev1 2019-02-26 16:43:49 +01:00
CONTRIBUTING DOC: Fix typos in README and CONTRIBUTING 2018-11-12 08:54:12 +01:00
INSTALL [RELEASE] Released version 2.0-dev0 2018-12-22 11:20:35 +01:00
LICENSE LICENSE: add licence exception for OpenSSL 2012-09-07 13:52:26 +02:00
MAINTAINERS DOC: fix reference to map files in MAINTAINERS 2018-10-17 04:21:04 +02:00
Makefile MINOR: fd: Use closefrom() as my_closefrom() if supported. 2019-02-25 16:51:03 +01:00
README DOC: split the README into README + INSTALL 2018-12-16 22:30:57 +01:00
ROADMAP DOC: update the roadmap about priority queues 2018-08-10 17:12:04 +02:00
SUBVERS BUILD: use format tags in VERDATE and SUBVERS files 2013-12-10 11:22:49 +01:00
VERDATE [RELEASE] Released version 2.0-dev1 2019-02-26 16:43:49 +01:00
VERSION [RELEASE] Released version 2.0-dev1 2019-02-26 16:43:49 +01:00

README 

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
  - 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)