796446a15e
Support pacing emission for STREAM frames at the QUIC MUX layer. This is implemented by adding a quic_pacer engine into QCC structure. The main changes have been written into qcc_io_send(). It now differentiates cases when some frames have been rejected by transport layer. This can occur as previously due to congestion or FD buffer full, which requires subscribing on transport layer. The new case is when emission has been interrupted due to pacing timing. In this case, QUIC MUX I/O tasklet is rescheduled to run with the flag TASK_F_USR1. On tasklet execution, if TASK_F_USR1 is set, all standard processing for emission and reception is skipped. Instead, a new function qcc_purge_sending() is called. Its purpose is to retry emission with the saved STREAM frames list. Either all remaining frames can now be send, subscribe is done on transport error or tasklet must be rescheduled for pacing purging. In the meantime, if tasklet is rescheduled due to other conditions, TASK_F_USR1 is reset. This will trigger a full regeneration of STREAM frames. In this case, pacing expiration must be check before calling qcc_send_frames() to ensure emission is now allowed. |
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README.md
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.