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Re: [tor-bugs] #9546 [Tor]: Link handshake fails with "Received unexpected cell command 10" when clocks are skewed
#9546: Link handshake fails with "Received unexpected cell command 10" when clocks
are skewed
-----------------------------------+----------------------------------------
Reporter: zwol | Owner:
Type: defect | Status: new
Priority: normal | Milestone: Tor: 0.2.4.x-final
Component: Tor | Version: Tor: 0.2.4.15-rc
Keywords: tor-bridge tor-client | Parent:
Points: | Actualpoints:
-----------------------------------+----------------------------------------
Comment(by karsten):
Confirming that this happens on a private bridge that performs
reachability tests:
{{{
Aug 20 17:46:02.829 [info] update_consensus_router_descriptor_downloads():
0 router descriptors downloadable. 0 delayed; 4383 present (0 of those
were in old_routers); 0 would_reject; 0 wouldnt_use; 0 in progress.
Aug 20 17:46:02.831 [info] consider_testing_reachability(): Testing
reachability of my ORPort: 174.129.86.221:9001.
Aug 20 17:46:02.831 [info] onion_pick_cpath_exit(): Using requested exit
node '$224FC9615C2899B3C982A947FF7912201F986B1C~utpbridge at
174.129.86.221'
Aug 20 17:46:02.834 [info] circuit_send_next_onion_skin(): First hop:
finished sending CREATE_FAST cell to
'$64186650FFE4469EBBE52B644AE543864D32F43C=PsychoOnion3 at 89.187.142.208'
Aug 20 17:46:02.834 [info] routerlist_remove_old_routers(): We have 4383
live routers and 10402 old router descriptors.
Aug 20 17:46:02.937 [info] circuit_finish_handshake(): Finished building
circuit hop:
Aug 20 17:46:02.937 [info] internal circ (length 3, last hop utpbridge):
PsychoOnion3(open) fmj(closed)
$224FC9615C2899B3C982A947FF7912201F986B1C(closed)
Aug 20 17:46:02.937 [info] circuit_send_next_onion_skin(): Sending extend
relay cell.
Aug 20 17:46:03.192 [info] circuit_finish_handshake(): Finished building
circuit hop:
Aug 20 17:46:03.192 [info] internal circ (length 3, last hop utpbridge):
PsychoOnion3(open) fmj(open)
$224FC9615C2899B3C982A947FF7912201F986B1C(closed)
Aug 20 17:46:03.193 [info] circuit_send_next_onion_skin(): Sending extend
relay cell.
Aug 20 17:46:03.399 [info] channel_register(): Channel 0x7f466fadb510
(global ID 5) in state opening (1) registered with no identity digest
Aug 20 17:46:03.595 [info] channel_tls_process_versions_cell(): Negotiated
version 3 with 91.213.195.244:44739; Sending cells: VERSIONS CERTS NETINFO
Aug 20 17:46:03.701 [info] channel_tls_process_certs_cell(): Got some good
certificates from 91.213.195.244:44739: Waiting for AUTHENTICATE.
Aug 20 17:46:03.825 [info] channel_tls_handle_cell(): Received unexpected
cell command 1 in chan state opening / conn state handshaking (Tor, v3
handshake); closing the connection.
Aug 20 17:46:04.010 [info] circuit_testing_failed(): Our testing circuit
(to see if your ORPort is reachable) has failed. I'll try again later.
}}}
This is latest maint-0.2.4 on a machine with a non-skewed clock.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/9546#comment:5>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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