For now, the HTX extra value is used to specify the known part, in bytes, of the HTTP payload we will receive. It may concerne the full payload if a content-length is specified or the current chunk for a chunk-encoded message. The main purpose of this value is to be used on the opposite side to be able to announce chunks bigger than a buffer. It can also be used to check the validity of the payload on the sending path, to properly detect too big or too short payload. However, setting this information in the HTX message itself is not really appropriate because the information is lost when the HTX message is consumed and the underlying buffer released. So the producer must take care to always add it in all HTX messages. it is especially an issue when the payload is altered by a filter. So to fix this design issue, the information will be moved in the sedesc. It is a persistent area to save the information. In addition, to avoid the ambiguity between what the producer say and what the consumer see, the information will be splitted in two fields. In this patch, the fields are added: * kip : The known input payload length * kop : The known output payload lenght The producer will be responsible to set <kip> value. The stream will be responsible to decrement <kip> and increment <kop> accordingly. And the consumer will be responsible to remove consumed bytes from <kop>.
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.
