[tor-bugs] #31385 [Circumvention/Snowflake]: Snowflake client fails after bootstrap

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#31385: Snowflake client fails after bootstrap
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 Reporter:  cypherpunks              |          Owner:  cohosh
     Type:  defect                   |         Status:  assigned
 Priority:  Medium                   |      Milestone:
Component:  Circumvention/Snowflake  |        Version:
 Severity:  Normal                   |     Resolution:
 Keywords:                           |  Actual Points:
Parent ID:                           |         Points:
 Reviewer:                           |        Sponsor:
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Comment (by cohosh):

 Okay I bootstrapped 100 Tor connections through snowflake and uploaded the
 bootstrap progress as an attachment to this ticket. Each bootstrap
 requests a new snowflake from the broker in the usual way. It looks like
 the majority of snowflakes are working just fine and the client can
 bootstrap to 100%. Any bootstrap above 10% and below 100% means the
 bootstrap didn't finish in 30s. This means that these connections are
 slower than usual but not necessarily buggy. Bootstraps of only 10% mean
 that the data probably never reached the bridge.

 This doesn't test the bandwidth of the proxies, it only gives us a rough
 idea of how reachable they are and it looks like for the most part the
 webextension proxies aren't failing in this way.

 Like I mentioned above though, if you are unlucky and get a bad snowflake,
 all subsequent snowflakes will fail until you make a new connection
 because of the lost data.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31385#comment:13>
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