Re: [tor-bugs] #25600 [Obfuscation/Snowflake]: Running 2 instances of snowflake-client leads to the former one stopping

["Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>]

#25600: Running 2 instances of snowflake-client leads to the former one stopping
-----------------------------------+---------------------------
 Reporter:  cypherpunks            |          Owner:  (none)
     Type:  defect                 |         Status:  closed
 Priority:  Medium                 |      Milestone:
Component:  Obfuscation/Snowflake  |        Version:
 Severity:  Normal                 |     Resolution:  not a bug
 Keywords:                         |  Actual Points:
Parent ID:                         |         Points:
 Reviewer:                         |        Sponsor:
-----------------------------------+---------------------------

Comment (by dcf):

 Replying to [comment:4 cypherpunks]:
 > I'm definitely noticing that after dozens of minutes of inactivity tor
 eventually hits:
 >
 > {{{
 > Delaying directory fetches: No running bridges
 > Application request when we haven't received a consensus with exits.
 Optimistically trying known bridges again.
 > }}}
 >
 > Restarting the affected program solves the issue. But I'm not sure if
 this is a consequence of the proxy changes that you were mentioning.

 I've seen this too, not only with snowflake. I suspect it's actually a tor
 bug. Sometimes a loading tab in Tor Browser will stall, and I'll see this
 message. Then, I open another tab and go to a domain that doesn't have an
 existing circuit, and it will "un-stall" the first tab. It's like tor
 sometimes starts believing that none of its bridges are working, and
 refuses to even try again, until you ask for a new circuit.

 It may happen more often with snowflake because of #25429 (disconnects
 after 30 s). Some other tor-related tickets are #20379 (fixed in November
 2016) and #24392 (fixed in November 2018). I'm not sure if #24392 is fixed
 in a released Tor Browser yet.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25600#comment:5>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online

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