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Starting with OpenSSL 4.0, X509_get_subject_name(), X509_get_issuer_name(), and X509_CRL_get_issuer() return a const-qualified X509_NAME pointer. Similarly, X509_NAME_get_entry() returns a const X509_NAME_ENTRY *, and X509_NAME_ENTRY_get_data() returns a const ASN1_STRING *. Introduce the __X509_NAME_CONST__ macro (defined to 'const' for OpenSSL >= 4.0.0, empty for WolfSSL which lacks const on these APIs) and use it to qualify X509_NAME * variables and the parameters of the three DN helper functions ssl_sock_get_dn_entry(), ssl_sock_get_dn_formatted(), and ssl_sock_get_dn_oneline(). This avoids both const-qualifier warnings on OpenSSL 4.0 and discarded-qualifier warnings on WolfSSL, without needing explicit casts at call sites. In ssl_sock.c (ssl_get_client_ca_file) and ssl_gencert.c (ssl_sock_do_create_cert), a __X509_NAME_CONST__ X509_NAME * variable was being reused to store the result of X509_NAME_dup() and then passed to mutating functions (X509_NAME_add_entry_by_txt, X509_NAME_free). Introduce separate X509_NAME * variables (xn_dup, subject) to hold the mutable duplicate, keeping the const-qualified pointer for the borrowed reference from X509_get_subject_name(). Original patch from Alexandr Nedvedicky <sashan@openssl.org>: https://www.mail-archive.com/haproxy@formilux.org/msg46696.html
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.