- **labels**: --> dns

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** [feature-requests:#46] rfe: hooks for external DNS resolution**
**Status:** open
**Labels:** dns 
**Created:** Sun Jan 31, 2010 07:11 PM UTC by Anonymous
**Last Updated:** Sun Jan 31, 2010 10:39 PM UTC
**Owner:** Daniel Stenberg
Many large distributions do not compile libcurl with c-ares, making DNS lookup unavoidably blocking.  However there are other tools available for nonblocking DNS resolution, such as libevent's evdns module.  I don't know why OSes don't build libcurl with c-ares, but it would be moot if libcurl had hooks for delegating DNS resolution to another tool.
Alternately maybe libcurl could require c-ares rather than leaving it as an option, but surely that's been discussed before, and there are probably reasons for leaving it as an optional requirement.
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