[tor-bugs] #10566 [Tor]: tor relay hangs for 20 seconds periodically if domain from Address can not be resolved

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#10566: tor relay hangs for 20 seconds periodically if domain from Address can not
be resolved
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     Reporter:  erchewin  |      Owner:
         Type:  defect    |     Status:  new
     Priority:  normal    |  Milestone:  Tor: 0.2.5.x-final
    Component:  Tor       |    Version:  Tor: unspecified
   Resolution:            |   Keywords:
Actual Points:            |  Parent ID:
       Points:            |
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Changes (by nickm):

 * milestone:   => Tor: 0.2.5.x-final


Comment:

 We should use nonblocking lookups for this kind of thing when Tor is
 running, and only do a blocking lookup for our Address at startup.  That's
 comparatively easy when we're built against Libevent 2.0, where
 evutil_getaddrinfo_async() should let us look up Address nonblockingly
 without too much trouble.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/10566#comment:1>
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