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Re: [tor-bugs] #3443 [Tor Client]: Client with low CBT can't switch to a bridge if it's slow



#3443: Client with low CBT can't switch to a bridge if it's slow
------------------------+---------------------------------------------------
 Reporter:  arma        |          Owner:                    
     Type:  defect      |         Status:  new               
 Priority:  major       |      Milestone:  Tor: 0.2.3.x-final
Component:  Tor Client  |        Version:                    
 Keywords:  regression  |         Parent:                    
   Points:              |   Actualpoints:                    
------------------------+---------------------------------------------------

Comment(by ioneyes):

 Replying to [comment:16 ioneyes]:

 I made a slight inaccuracy. You need to allocate at least 2 seconds of
 build time, for each hop (normally 3=6 seconds) for every 1 second of ping
 response time. A rough guide.

 > Replying to [comment:15 ioneyes]:
 >
 > In summary. Tor appears to be behaving as expected. A low
 CircuitBuildTimeout (too low for the current network) will result in
 circuits timing out before Tor gets a chance to build them.
 >
 > From testing it seems you have to allow at least 2 seconds of circuit
 build time for every second of ping response time on the current network.
 This seems to give Tor the time it needs to build circuits.
 >
 > It also gives Tor enough latitude to increase its CircuitBuildTimeout in
 conjunction with the pareto distribution its modelled on, when a network
 connection speed reset (to a slower responding network) occurs.
 >

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/3443#comment:17>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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