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[tor-bugs] #4641 [Tor Hidden Services]: Proposal 171 changes broke âtor2web modeâ

#4641: Proposal 171 changes broke âtor2web modeâ
---------------------------------+------------------------------------------
 Reporter:  rransom              |          Owner:  rransom           
     Type:  defect               |         Status:  new               
 Priority:  normal               |      Milestone:  Tor: 0.2.3.x-final
Component:  Tor Hidden Services  |        Version:                    
 Keywords:                       |         Parent:                    
   Points:                       |   Actualpoints:                    
---------------------------------+------------------------------------------
 A âgit bisectâ traced the problem to the proposal 171 changes, and then to
 [https://gitweb.torproject.org/tor.git/commitdiff/e8b9815711e7cd1ef0b83153aefcc0d05e817f4e
 commit e8b9815711e7cd1ef0b83153aefcc0d05e817f4e].

 This commit causes `circuit_has_opened` to send two ESTABLISH_RENDEZVOUS
 cells on each rendezvous circuit, because `connection_ap_attach_pending`
 can never attach a stream to a `CIRCUIT_PURPOSE_C_ESTABLISH_REND` circuit.
 âwanoskarnetâ says that hidden service client support seemed to still be
 working in non-tor2web-mode versions of 0.2.3.x because they cannibalized
 pre-built three-hop circuits, and `circuit_has_opened` is never called for
 those.

 This is also the cause of #4171 (wanoskarnet diagnosed this, too).

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/4641>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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