[tor-bugs] #1297 [Tor Hidden Services]: Update hidden service logic to be more resilient to timeout

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#1297: Update hidden service logic to be more resilient to timeout
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    Reporter:  mikeperry            |       Owner:  rransom           
        Type:  defect               |      Status:  needs_review      
    Priority:  major                |   Milestone:  Tor: 0.2.2.x-final
   Component:  Tor Hidden Services  |     Version:  0.2.2.10-alpha    
  Resolution:  None                 |    Keywords:                    
      Parent:  #2552                |      Points:                    
Actualpoints:                       |  
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Changes (by rransom):

  * status:  assigned => needs_review


Comment:

 Replying to [comment:1 Sebastian]:
 > Something I've experience myself was that occasionally a hidden service
 would take 120 seconds to time out, but a new request would very quickly
 succeed.

 This problem is on the client side, not the server side (which this
 ticket's description focuses on).  The client spends its pre-built
 general-purpose circuits somehow (possibly on the descriptor fetch,
 possibly on introduction or rendezvous circuits which immediately time out
 (I haven't dug thoroughly enough into the source to find out whether this
 happens yet)), then all of the rendezvous circuits and introduction
 circuits it opens time out; when the user opens a second AP connection
 after the first times out, the client has some pre-built circuits ready,
 and the introduction and rendezvous attempts succeed before the CBT code
 reaps those circuits.

 See
 [https://gitweb.torproject.org/rransom/tor.git/shortlog/refs/heads/bug1297a
 bug1297a] ( `git://git.torproject.org/rransom/tor.git bug1297a` ) for
 fixes for some timeout-induced breakage on the client side.  I suspect
 that this doesn't completely fix #1297 on the client side, and it doesn't
 even touch the hidden service side.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/1297#comment:7>
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