a0db93f3d8
On backend side, multiplexer layer is initialized during connect_server(). However, this step is not performed if ALPN is used, as the negotiated protocol may be unknown. Multiplexer initialization is delayed after TLS handshake completion. There are still exceptions though that forces the MUX to be initialized even if ALPN is used. One of them was if <mux_proto> server field was already set at this stage, which is the case when an explicit proto is selected on the server line configuration. Remove this condition so that now MUX init is delayed with ALPN even if proto is forced. The scope of this change should be minimal. In fact, the only impact concerns server config with both proto and ALPN set, which is pretty unlikely as it is contradictory. The main objective of this patch is to prepare QUIC support on the backend side. Indeed, QUIC proto will be forced on the server if a QUIC address is used, similarly to bind configuration. However, we still want to delay MUX initialization after QUIC handshake completion. This is mandatory to know the selected application protocol, required during QUIC MUX init.
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.