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Diffstat (limited to 'LICENSE')
| -rw-r--r-- | LICENSE | 37 |
1 files changed, 37 insertions, 0 deletions
@@ -0,0 +1,37 @@ +HAPROXY's license - 2006/06/15 + +Historically, haproxy has been covered by GPL version 2. However, an issue +appeared in GPL which will prevent external non-GPL code from being built +using the headers provided with haproxy. My long-term goal is to build a core +system able to load external modules to support specific application protocols. + +Since some protocols are found in rare environments (finance, industry, ...), +some of them might be accessible only after signing an NDA. Enforcing GPL on +such modules would only prevent them from ever being implemented, while not +providing anything useful to ordinary users. + +For this reason, I *want* to be able to support binary only external modules +when needed, with a GPL core and GPL modules for standard protocols, so that +people fixing bugs don't keep them secretly to try to stay over competition. + +The solution was then to apply the LGPL license to the exportable include +files, while keeping the GPL for all the rest. This way, it still is mandatory +to redistribute modified code under customer request, but at the same time, it +is expressly permitted to write, compile, link and load non-GPL code using the +LGPL header files and not to distribute them if it causes a legal problem. + +Of course, users are strongly encouraged to continue the work under GPL as long +as possible, since this license has allowed useful enhancements, contributions +and fixes from talented people around the world. + +Due to the incompatibility between the GPL and the OpenSSL licence, you must +apply the GPL/LGPL licence with the following exception: +This program is released under the GPL with the additional exemption that +compiling, linking, and/or using OpenSSL is allowed. + +The text of the licenses lies in the "doc" directory. All the files provided in +this package are covered by the GPL unless expressly stated otherwise in them. +Every patch or contribution provided by external people will by default comply +with the license of the files it affects, or be rejected. + +Willy Tarreau - w@1wt.eu |