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Re: [tor-bugs] #1772 [Tor Client]: Counting circuit timeouts when we can't establish any TLS connection
#1772: Counting circuit timeouts when we can't establish any TLS connection
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Reporter: arma | Owner: mikeperry
Type: defect | Status: assigned
Priority: major | Milestone: Tor: 0.2.2.x-final
Component: Tor Client | Version:
Keywords: | Parent:
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Comment(by arma):
http://freehaven.net/~arma/tord-bug1772 is the beginning of a Tor debug
log. When I wake up (and it's been running for hours) I'll post the rest
of it.
Interesting points:
A) Note the frequent timeouts caused by the Pandoras. They're mostly one-
hop circuits, so in theory they'll go away with the recent patches to
#1740. I worry though that we'll just mask the problem then.
B) We should not do the CIRCUIT_PURPOSE_C_MEASURE_TIMEOUT dance if
cbt->close_ms == cbt->timeout_ms. It just causes more timeouts.
C) There are a few instances of bug #1980 for you, complete with debug
logs:
{{{
Sep 29 09:51:48.575 [warn] circuit_build_times_network_close(): Bug:
Circuit somehow completed a hop while the network was not live. Network
was last live at 2010-09-29 09:50:47, but circuit launched at 2010-09-29
09:50:47. It's now 2010-09-29 09:51:48.
}}}
D) I expect that when it reaches 100 build times, it will produce an
atrocious cbt. We should think about how to cap the number at something
realistic. I am guessing that these Pandoras are simply never planning to
answer me, no matter my timeout.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/1772#comment:9>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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