[tor-bugs] #16585 [Tor]: relay stops forwarding all traffic when client function cannot establish circuits

["Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>]

#16585: relay stops forwarding all traffic when client function cannot establish
circuits
-----------------------+-------------------------------
 Reporter:  starlight  |          Owner:
     Type:  defect     |         Status:  new
 Priority:  normal     |      Milestone:
Component:  Tor        |        Version:  Tor: 0.2.6.10
 Keywords:             |  Actual Points:
Parent ID:             |         Points:
-----------------------+-------------------------------
 This is most easily observed when
 one or two guards are manually configured
 and all guards becomes unreachable
 because either they are either

 a) down

 b) enforcing circuit DDOS rate limiting

 One also observes brief sharp traffic
 forward drop-offs when new circuits
 are being created rapidly but otherwise
 under nominal operation.

 Log message accompanying the problem:

 {{{
 Failed to find node for hop 0 of our path. Discarding this circuit.
 }}}

 Attached Vidalia bandwidth graphs
 show one each of (a) and (b) above.

 Easy to reproduce.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16585>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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