5ba0a2d527
On backend side, an error at connection level during the preface sending was not properly handled and could lead to a spinning loop on process_stream() when the h2 stream on client side was blocked, for instance because of h2 flow control. It appeared that no transition was perfromed from the PREFACE state to an ERROR state on the H2 connection when an error occurred on the underlying connection. In that case, the H2 connection was woken up in loop to try to receive data, waking up the upper stream at the same time. To fix the issue, an H2C error must be reported. Most state transitions are handled by the demux function. So it is the right place to do so. First, in PREFACE state and on server side, if an error occurred on the TCP connection, an error is now reported on the H2 connection. REFUSED_STREAM error code is used in that case. In addition, in that case, we also take care to properly handle the connection shutdown. This patch should fix the issue #3020. It must be backported to all stable versions.
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.