4489a61585
Implement a new method for QUIC pacing emission based on credit. This represents the number of packets which can be emitted in a single burst. After emission, decrement from the credit the number of emitted packets. Several emission can be conducted in the same sequence until the credit is completely decremented. When a new emission sequence is initiated (i.e. under a new QMUX tasklet invokation), credit is refilled according to the delay which occured between the last and current emission context. This new mechanism main advantage is that it allows to conduct several emission in the same task context without having to wait between each invokation. Wait is only forced if pacing is expired, which is now equivalent to having a null credit. Furthermore, if delay between two emissions sequence would have been smaller than expected, credit is only partially refilled. This allows to restart emission without having to wait for the whole credit to be available. On the implementation side, a new field <credit> is avaiable in quic_pacer structure. It is automatically decremented on quic_pacing_sent_done() invokation. Also, a new function quic_pacing_reload() must be used by QUIC MUX when a new emission sequence is initiated to refill credit. <next> field from quic_pacer has been removed. For the moment, credit is based on the burst configured via quic-cc-algo keyword, or directly reported by BBR. This should 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.