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

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#3443: Client with low CBT can't switch to a bridge if it's slow
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 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:                    
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Comment(by arma):

 Replying to [comment:8 mikeperry]:
 > If your bridge was so slow the first hop didn't ever complete (which the
 logs seem to say happened at least once), that could be a problem.

 The problem in this ticket got worse when we introduced v3 handshakes --
 there's now a lot that goes on before we can finish the first hop.

 In fact, here's a scenario I think happens pretty commonly: Tor client on
 fast connection starts, establishes tls connections to its guards, builds
 a bunch of circuits over time, and picks a cbt of a few seconds. Then it
 restarts, uses the same cbt, but doing a v3 handshake takes too long and
 it gives up.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/3443#comment:9>
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