9d4c26ebaa
On snd_buf completion, QUIC MUX tasklet is scheduled if newly data has been transferred from the stream layer. Thanks to qcc_wakeup(), pacing status is removed from tasklet, which ensure next emission will reset Tx frames and use the new data. Tasklet is not scheduled if MUX is already subscribed on send due to a previous blocking condition. This is an optimization to prevent an unneeded IO handler execution. However, this causes a bug if an emission is currently delayed due to pacing. As pacing status is not removed on snd_buf, next emission process will continue emission with older data without refreshing the newly transferred one. This causes a transfer freeze. Unless there is some activity on the connection, the transfer will be eventually aborted due to idle timeout. To fix this, remove TASK_F_USR1 if tasklet wakeup is not called due to send subscription. Note that this code is also duplicated in done_ff for zero-copy transfer. This must be backported up to 3.1. |
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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.