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c-ares
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======
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This is c-ares, an asynchronous resolver library. It is intended for
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applications which need to perform DNS queries without blocking, or need to
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perform multiple DNS queries in parallel. The primary examples of such
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applications are servers which communicate with multiple clients and programs
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with graphical user interfaces.
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The full source code is available in the 'c-ares' release archives, and in a
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git repository: http://github.com/bagder/c-ares
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If you find bugs, correct flaws, have questions or have comments in general in
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regard to c-ares (or by all means the original ares too), get in touch with us
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on the c-ares mailing list: http://cool.haxx.se/mailman/listinfo/c-ares
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c-ares is of course distributed under the same MIT-style license as the
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original ares.
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You'll find all c-ares details and news here:
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http://c-ares.haxx.se/
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NOTES FOR C-ARES HACKERS
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The following notes apply to c-ares version 1.7.0 and later.
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* The distributed ares_build.h file is only intended to be used on systems
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which can not run the also distributed configure script.
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* The distributed ares_build.h file is generated as a copy of ares_build.h.dist
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when the c-ares source code distribution archive file is originally created.
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* If you check out from git on a non-configure platform, you must run the
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appropriate buildconf* script to set up ares_build.h and other local files
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before being able of compiling the library.
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* On systems capable of running the configure script, the configure process
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will overwrite the distributed ares_build.h file with one that is suitable
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and specific to the library being configured and built, this new file is
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generated from the ares_build.h.in template file.
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* If you intend to distribute an already compiled c-ares library you _MUST_
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also distribute along with it the generated ares_build.h which has been
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used to compile it. Otherwise the library will be of no use for the users of
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the library that you have built. It is _your_ responsability to provide this
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file. No one at the c-ares project can know how you have built the library.
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* File ares_build.h includes platform and configuration dependent info,
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and must not be modified by anyone. Configure script generates it for you.
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* We cannot assume anything else but very basic compiler features being
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present. While c-ares requires an ANSI C compiler to build, some of the
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earlier ANSI compilers clearly can't deal with some preprocessor operators.
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* Newlines must remain unix-style for older compilers' sake.
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* Comments must be written in the old-style /* unnested C-fashion */
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