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path: root/src/network/res_query.c
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2014-06-02implement new dns backend, res_send and other legacy resolver functionsRich Felker-18/+10
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.
2013-12-12include cleanups: remove unused headers and add feature test macrosSzabolcs Nagy-0/+1
2012-05-12use __h_errno_location for h_errnoRich Felker-0/+1
we do not bother making h_errno thread-local since the only interfaces that use it are inherently non-thread-safe. but still use the potentially-thread-local ABI to access it just to avoid lock-in.
2011-06-30res_search symbol, aliased to res_query for now (better than nothing)Rich Felker-0/+3
2011-02-12initial check-in, version 0.5.0v0.5.0Rich Felker-0/+20