[tor-bugs] #25688 [Obfuscation/Snowflake]: proxy-go is still deadlocking occasionally
Tor Bug Tracker & Wiki
blackhole at torproject.org
Wed Apr 3 19:36:27 UTC 2019
#25688: proxy-go is still deadlocking occasionally
--------------------------------------------+------------------------------
Reporter: dcf | Owner: cohosh
Type: defect | Status:
| needs_revision
Priority: Low | Milestone:
Component: Obfuscation/Snowflake | Version:
Severity: Normal | Resolution:
Keywords: network-team-roadmap-2019-Q1Q2 | Actual Points:
Parent ID: | Points: 3
Reviewer: | Sponsor:
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Comment (by cohosh):
> That means that a client can cause the proxy to lose tokens by sending
an offer, and then doing nothing with the answer.
Just confirmed this is the case, even with the above fix, in the test
environment by commenting out
{{{
//err := c.pc.SetRemoteDescription(answer)
}}}
in `client/lib/webrtc.go`. The client repeatedly tries to connect to a
snowflake and after 10 tries, the proxy deadlocks because the tokens are
gone.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25688#comment:19>
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