[tor-bugs] #9386 [Tor]: Prop 221: Use CREATE_FAST less, or not at all

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#9386: Prop 221: Use CREATE_FAST less, or not at all
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     Reporter:  nickm        |      Owner:
         Type:  enhancement  |     Status:  needs_review
     Priority:  normal       |  Milestone:  Tor: 0.2.5.x-final
    Component:  Tor          |    Version:
   Resolution:               |   Keywords:  tor-client prop221 024-backport
Actual Points:               |  Parent ID:
       Points:               |
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Comment (by arma):

 The change in eed326f0 still makes us lose a feature we were using: if
 your network has gone away, but the kernel hasn't told your tcp connection
 to fail, then we'd notice when we timed out waiting for a response to our
 create_fast cell. Now we no longer do.

 This is one of those weird edge cases that e.g. made Nathan extra happy
 with Tor's network state detection on Android.

 I wonder if we want to keep the "mark it down" behavior when we're closing
 the circuit not due to a destroy cell.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/9386#comment:4>
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