72267ff35f
haproxy generates CID for clients which reuse them as DCID on their packets. These CID are stored in a global tree quic_cid_trees. Each operation on this tree must be done under lock protection. quic_get_cid_tid() is a function which lookups a CID in global tree and return the associated thread ID. This is used on datagram reception on listener socket before redispatching the datagram to the correct thread. This function uses a lock to protect quic_cid_trees access. However, lock region is too small as CID tree node is accessed outside of it. Fix this by extending lock protection for CID dereferencement until thread ID is retrieved. The impact of this bug is unknown, but it may possible cause crashes. However, it is probably rare as most of datagram reception is done on quic_conn socket which does not uses quic_get_cid_tid(). This may fix first crash of github issue #2607. This must be backported up to 2.8.
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.