[tor-bugs] #22159 [Core Tor/Tor]: Hidden service f3oap63t7u7hfnki exceeded launch limit with 11 intro points in the last 77 seconds

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#22159: Hidden service f3oap63t7u7hfnki exceeded launch limit with 11 intro points
in the last 77 seconds
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 Reporter:  arma          |          Owner:  dgoulet
     Type:  defect        |         Status:  accepted
 Priority:  Medium        |      Milestone:  Tor: 0.3.1.x-final
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:  tor-hs        |  Actual Points:
Parent ID:                |         Points:
 Reviewer:                |        Sponsor:
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Comment (by dgoulet):

 Replying to [comment:2 arma]:
 > B) I wonder if this is a side effect of the "if you need an intro point,
 launch two and use whichever finishes first" logic. If we even still use
 that.

 We do not. We only do that when the first intro point circuit reaches a
 "long enough time" that we'll relaunch one. See `circuit_get_best()`. The
 timeout value before we do such a thing can changed but basically is:

 {{{
   SET_CUTOFF(c_intro_cutoff, get_circuit_build_timeout_ms() * (14/6.0) +
 1000);
 }}}

 The only time we use parallel intro point is when we need a full set of
 IPs like a new descriptor or at startup. We launch 5 and pick the first 3.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22159#comment:7>
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