htx_xfer() function should replace htx_xfer_blks(). It will be a bit easier to maintain and to use. The behavior of htx_xfer() can be changed by calling it with specific flags: * HTX_XFER_KEEP_SRC_BLKS: Blocks from the source message are just copied * HTX_XFER_PARTIAL_HDRS_COPY: It is allowed to partially xfer headers or trailers * HTX_XFER_HDRS_ONLY: only headers are xferred By default (HTX_XFER_DEFAULT or 0), all blocks from the source message are moved into to the destination mesage. So copied in the destination messageand removed from the source message. The caller must still define the maximum amount of data (including meta-data) that can be xferred. It is no longer necessary to specify a block type to stop the copy. Most of time, with htx_xfer_blks(), this parameter was set to HTX_BLK_UNUSED. And otherwise it was only specified to transfer headers. It is important to not that the caller is responsible to verify the original HTX message is well-formated. Especially, it must be sure headers part and trailers part are complete (finished by EOH/EOT block). For now, htx_xfer_blks() is not removed for compatiblity reason. But it is deprecated.
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.
