[tor-bugs] #20307 [Core Tor/Tor]: [warn] Remote server sent bogus reason code 65021

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#20307: [warn] Remote server sent bogus reason code 65021
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 Reporter:  arma          |          Owner:
     Type:  defect        |         Status:  new
 Priority:  Medium        |      Milestone:  Tor: 0.2.9.x-final
Component:  Core Tor/Tor  |        Version:  Tor: 0.2.9.3-alpha
 Severity:  Normal        |     Resolution:
 Keywords:                |  Actual Points:
Parent ID:                |         Points:
 Reviewer:                |        Sponsor:
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Comment (by nickm):

 Oh darn, you said 65021, not 65012.  That makes the target
 -END_STREAM_REASON_CONNECTFAILED.

 This warning should only be possible if you're running a controller, since
 it only appears in circuit_end_reason_to_control_string , and only
 control_event_circuit_status calls that...

 Negative circuit close reason codes can come from at least these:
  * pathbias_count_build_attempt.
  * pathbias_check_probe_response, inconsistently.
  * circuit_handle_first_hop
  * circuit_send_next_onion_skin
  * circuit_finish_handshake



 Wait.  This is wrong:
 {{{
 src/or/control.c:      circuit_mark_for_close(TO_CIRCUIT(circ),
 -END_CIRC_REASON_CONNECTFAILED);
 }}}

 That looks quite suggestive.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20307#comment:3>
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