Martin Mirchev
a2175623a4
When a Lua httpclient request has more header values than
tune.http.maxhdr, hlua_httpclient_table_to_hdrs() pops the inner
lua_next() key and value and returns NULL. But the key and value of the
outer lua_next() loop on the headers table stay on the stack, so the
caller's lua_next() on the argument table gets the wrong key and the
request fails with a confusing error:
runtime error: invalid key to 'next' from [C]: in method 'get'
The header values already duplicated with istdup() are also leaked.
Let's free them and raise an explicit Lua error instead, as the caller
does for the other invalid arguments:
runtime error: too many headers (tune.http.maxhdr is 101)
The function is now marked __LJMP and its call wrapped in MAY_LJMP().
This should be backported where 2db801c63 ("BUG/MINOR: hlua: fix stack
overflow in httpclient headers conversion") was backported. Before 3.5
the function is in src/hlua.c.
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
- doc/haterm.txt and doc/haload.txt for load generation utilities
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.