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Since http-client applet uses its own buffers, it is possible to have data stuck in the applet input buffer while the http-client response buffer is full, preventing the applet to consume these data. If this happens on the last part of the response payload, the upper stream can decide to shut the applet. In this case, the applet using the http client will not be able to retrieve these last data because they will never be move into the hc response buffer. The main reason for this bug is that, for now, the applets cannot survive the upper stream unlike multiplexers. It could be a good improvement for the 3.5. However, some applets still uses the stream-connector and the upper stream (peer and stat applets for instance). So it is not an easy task. In the mean time, to fix the issue on stable branches, the http-client applet now stops to consume data when the hc response buffer is not empty. This way, the applet shut will be deferred. Data will be consumed when they can be fully moved in the httpclient response buffer. This patch should fix the issue #3366. It must be backported to 3.3.
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.