[tor-bugs] #21394 [Core Tor/Tor]: connection timeouts are affecting Tor Browser usability

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#21394: connection timeouts are affecting Tor Browser usability
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 Reporter:  arthuredelstein                 |          Owner:
     Type:  defect                          |         Status:  new
 Priority:  Medium                          |      Milestone:
Component:  Core Tor/Tor                    |        Version:
 Severity:  Normal                          |     Resolution:
 Keywords:  tbb-performance, tbb-usability  |  Actual Points:
Parent ID:                                  |         Points:
 Reviewer:                                  |        Sponsor:
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Comment (by arma):

 Replying to [ticket:21394 arthuredelstein]:
 > * What's the reason for MIN_CIRCUIT_STREAM_TIMEOUT being 10 seconds?
 Would it do any harm to make this shorter, say 5 seconds or 2 seconds?

 This one is straightforward: if it's 5 seconds or 2 seconds, then people
 on crummy (slow, lossy) internet connections will forever be giving up on
 the circuit before they even get the connected cell.

 The underlying problem is that this is a static number for all users, not
 an adaptive number like the CircuitBuildTimeout.

 I feel like I had a ticket long ago for making the stream timeout adaptive
 too, but maybe that maybe never found its way into being a ticket.

 (Even 10 seconds is too short for some people on crummy networks, which
 causes them to forever be abandoning circuits right before they work, and
 moving to new ones which they then abandon, and their Tor experience is no
 fun.)

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21394#comment:7>
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