2e3542bec6
With pacing implementation, qcc_send_frames() return code has been extended to report emission interruption due to pacing limitation. This is used only in qcc_io_send(). However, its invokation may be skipped using 'sent_done' label. This happens on emission failure of a STOP_SENDING or RESET_STREAM (either memory allocation failure, or transport layer rejection). In this case, return values are mixed as qcs_send() is wrongly compared against pacing interruption condition. This value corresponds to the length of the last built STREAM frames. If by mischance the last frame was 1 byte long, qcs_send() return value is equal to pacing interruption condition. This has several effects. If pacing is activated, it may lead to unneeded wakeup on QUIC MUX. Worst, if pacing is not used, a BUG_ON() crash will be triggered. Fix this by using a different variable dedicated to qcc_send_frames() return value. By default it is initialized to 0. This ensures that pacing code won't be activated in case qcc_send_frames() is not used. This must be backported up to 3.1.
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.