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When a connection is released, depending on its state, it may be detached from
the session and it may be removed from the server lists. The first case may
happen for private or unsharable active connections. The second one should only
be performed for idle or available connections. We never try to remove a
connection from the server list if it is attached to a session. But it is also
important to never try to remove a private connecion from the server lists, even
if it is not attached to a session. Otherwise, the curr_used_conn server counter
is decremented once too often.
This bug was introduced by the commit 04a24c5ea ("MINOR: connection: don't check
priv flag on free"). It is related to the issue #881. It only affects the 2.3,
no backport is needed.
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)