e37976166b
Historically, when lf_text_len() or lf_text() were called with a NULL string and "+M" option was set, "-" would be printed. However, if the input string was simply an empty one with len > 0, then nothing would be printed. This can happen if lf_text() is called with an empty string because in this case len is set to size (indeed, for performance reasons we don't pre-compute the length, we stop as soon as we encounter a NULL-byte) In practise, a lot of call places making use of lf_text() or lf_text_len() try their best to avoid calling lf_text() with an empty string, and instead explicitly call lf_text_len() with NULL as parameter to consider the "+M" option. But this is not enough, as shown in GH #2797, there could still be places where lf_text() is called with an empty string. In such case, instead of ignoring the "+M" option, let's check after _lf_text_len() if the returned pointer differs from the original one. If both are equal, then it means that nothing was printed (ie: result of empty string): in that case we check the "+M" option to print "-" when possible. While this commit seems harmless, it's probably better to avoid backporting it since it could break existing applications relying on the historical behavior.
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.