LICENSE - haproxy - Gitiles

 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
	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