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[tor-bugs] #20307 [Core Tor/Tor]: [warn] Remote server sent bogus reason code 65021
#20307: [warn] Remote server sent bogus reason code 65021
------------------------------+--------------------------------
Reporter: arma | Owner:
Type: defect | Status: new
Priority: Medium | Milestone: Tor: unspecified
Component: Core Tor/Tor | Version: Tor: 0.2.9.3-alpha
Severity: Normal | Keywords:
Actual Points: | Parent ID:
Points: | Reviewer:
Sponsor: |
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On my Tor client running 0.2.9.3-alpha-dev (git-bfaded9143d127cb) on a
really crummy network, I got a string of 65 of these lines:
{{{
Oct 06 16:21:58.020 [warn] Remote server sent bogus reason code 65021
Oct 06 16:21:59.027 [warn] Remote server sent bogus reason code 65021
...
}}}
In fact, I got one of those warns per second for 65 seconds.
But when I look at the more detailed logs for the first one, I see
{{{
Oct 06 16:21:58.020 [info] circuit_build_failed(): Our circuit failed to
get a response from the first hop (62.210.123.24:443). I'm going to try to
rotate to a better connection.
Oct 06 16:21:58.020 [info] entry_guard_register_connect_status(): Unable
to connect to entry guard 'Alastor'
(2EB3C230180694A1E848001E20F36F76A2287039). Marking as unreachable.
Oct 06 16:21:58.020 [warn] Remote server sent bogus reason code 65021
Oct 06 16:21:58.020 [debug] circuit_get_by_circid_channel_impl():
circuit_get_by_circid_channel_impl() returning circuit 0x7fda41028de0 for
circ_id 3884794536, channel ID 1 (0x7fda41c62410)
Oct 06 16:21:58.020 [debug] circuitmux_append_destroy_cell(): Cmux at
0x7fda41c625d0 queued a destroy for circ 3884794536, cmux counter is now
1, global counter is now 1
Oct 06 16:21:58.020 [debug] channel_send_destroy(): Sending destroy
(circID 3884794536) on channel 0x7fda41c62410 (global ID 1)
}}}
So it would seem that no "end" cell was received at all. Maybe we are
setting END_CIRC_REASON_FLAG_REMOTE somewhere where we shouldn't? Also,
what is the mechanism by which the number makes it all the way up to
65021?
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20307>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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