[tor-bugs] #9166 [Tor]: Write a UTP-based channel implementation

Tor Bug Tracker & Wiki blackhole at torproject.org
Fri Aug 9 09:46:53 UTC 2013


#9166: Write a UTP-based channel implementation
---------------------------+------------------------------------------------
 Reporter:  nickm          |          Owner:                  
     Type:  defect         |         Status:  new             
 Priority:  normal         |      Milestone:  Tor: unspecified
Component:  Tor            |        Version:                  
 Keywords:  tor-relay utp  |         Parent:  #9165           
   Points:                 |   Actualpoints:                  
---------------------------+------------------------------------------------

Comment(by karsten):

 I'm afraid I can only speculate about the problem.  I only saw one part in
 the code that uses libevent, and that's in `retry_utp_listener` in
 `src/or/connection.c` where we listen for new incoming connections.  I
 also think I found the place where we send out bytes to the network using
 `sendto` in `tor_UTPSendToProc` in `src/or/channeltls.c`.  But I didn't
 find where we're informed about new incoming bytes from existing
 connections.  Maybe this happens in a place that is not intercepted by
 Shadow?

 Here's the full diff (which isn't that big), in case you want to have a
 look yourself:
 https://gitweb.torproject.org/gitweb?p=sjm217/tor.git;a=commitdiff;h=9628f86;hp=20912fb

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/9166#comment:20>
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