[tor-bugs] #23621 [Core Tor/Tor]: prop224: Missing tons of mds over time with a lurking client

Tor Bug Tracker & Wiki blackhole at torproject.org
Fri Sep 22 21:02:52 UTC 2017

#23621: prop224: Missing tons of mds over time with a lurking client
 Reporter:  asn           |          Owner:  dgoulet
     Type:  defect        |         Status:  needs_review
 Priority:  Medium        |      Milestone:  Tor: 0.3.2.x-final
Component:  Core Tor/Tor  |        Version:  Tor:
 Severity:  Normal        |     Resolution:
 Keywords:  prop224       |  Actual Points:
Parent ID:                |         Points:
 Reviewer:                |        Sponsor:

Comment (by arma):

 Replying to [ticket:23621 asn]:
 > After 1-2 days of HS client operation, we will be missing about 2000
 mds. If at that point we need to do another HS operation [...] This can
 result in delays and/or reachability issues.

 This sounds like a bug worth exploring and fixing. It will be a bug --
 even if we do the fix proposed in this ticket -- for an actually idle Tor
 client that then tries to access a v3 onion service as its first action.

 In theory in this situation it should notice that it needs to fetch
 microdescs, and do it, and then let the various circuits proceed. If that
 process is failing somehow, we should find out where and fix it.

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23621#comment:9>
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