25b0625d5c
When a large request is sent, it is possible to have a response before the end of the request. It is valid from HTTP perspective but it is an issue with the current design of the http-client. Indded, the request and the response are handled sequentially. So the response will be blocked, waiting for the end of the request. Most of time, it is not an issue, except when the request transfer is blocked. In that case, the applet is blocked. With the current API, it is not possible to handle early response and continue the request transfer. So, this case cannot be handle. In that case, it seems reasonnable to drain the request if a response is received. This way, the request transfer, from the caller point of view, is never blocked and the response can be properly processed. To do so, the action flag HTTPCLIENT_FA_DRAIN_REQ is added to the http-client. When it is set, the request payload is just dropped. In that case, we take care to not report the end of input to properly report the request was truncated, especially in logs. It is only an issue with large POSTs, when the payload is streamed. This patch must be backported as far as 2.6.
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.