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authorRich Felker <>2014-06-02 02:13:57 -0400
committerRich Felker <>2014-06-02 02:13:57 -0400
commit8312f7f60f9dfe88118163d38b8282abf04aac2f (patch)
tree0dcbcbd3f9e6b3362a920707895624bdc3adb1f5 /Makefile
parent1871f583f419f58bbcd921cda41c991994672c8a (diff)
implement new dns backend, res_send and other legacy resolver functions
this is the second phase of the "resolver overhaul" project. the key additions in this commit are the __res_msend and __res_mkquery functions, which have been factored so as to provide a backend for both the legacy res_* functions and the standard getaddrinfo and getnameinfo functions. the latter however are still using the old backend code; there is code duplication which still needs to be removed, and this will be the next phase of the resolver overhaul. __res_msend is derived from the old __dns_doqueries function, but generalized to send arbitrary caller-provided packets in parallel rather than producing the parallel queries itself. this allows it to be used (completely trivially) as a backend for res_send. the factored-out query generation code, with slightly more generality, is now part of __res_mkquery.
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