e2d2f67666
The sign bit of the Delta Base integer encoding was extracted using mask 0x8 (bit 3) instead of 0x80 (bit 7). This was likely a copy-paste error from other QPACK instructions using 3-bit varints. According to RFC 9204 Section 5.2.1, for prefix instructions, the sign bit 'S' is the most significant bit (bit 7) of the first byte, followed by a 7-bit varint. This fix is harmless for current HTTP/3 traffic: per RFC 9204, the Delta Base calculation is strictly used for dynamic table entry references. Since HAProxy's QPACK dynamic table is currently disabled and the extracted sign bit is not yet used in the decoding logic (only in debug prints), this code path has no impact on production for now. Must be backported to all versions. |
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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.