[tor-bugs] #21056 [- Select a component]: Could not pick one of the responsible hidden service directories, because we requested them all recently without success.

["Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>]

#21056: Could not pick one of the responsible hidden service directories, because
we requested them all recently without success.
--------------------------------------+--------------------------
     Reporter:  joeyh                 |      Owner:
         Type:  defect                |     Status:  new
     Priority:  Medium                |  Milestone:
    Component:  - Select a component  |    Version:  Tor: 0.2.9.8
     Severity:  Normal                |   Keywords:
Actual Points:                        |  Parent ID:
       Points:                        |   Reviewer:
      Sponsor:                        |
--------------------------------------+--------------------------
 I am seeing connections to hidden services reliably fail, with this in the
 log:

 Dec 21 13:50:16.000 [info] connection_ap_handshake_rewrite_and_attach():
 Got a hidden service request for ID '[scrubbed]'
 Dec 21 13:50:16.000 [info] connection_ap_handshake_rewrite_and_attach():
 Unknown descriptor [scrubbed]. Fetching.
 Dec 21 13:50:16.000 [debug] rend_client_refetch_v2_renddesc(): Fetching v2
 rendezvous descriptor for service [scrubbed]
 Dec 21 13:50:16.000 [info] pick_hsdir(): Could not pick one of the
 responsible hidden service directories, because we requested them all
 recently without success.
 Dec 21 13:50:16.000 [info] pick_hsdir(): Could not pick one of the
 responsible hidden service directories, because we requested them all
 recently without success.
 Dec 21 13:50:16.000 [info] fetch_v2_desc_by_addr(): Could not pick one of
 the responsible hidden service directories to fetch descriptors, because
 we already tried them all unsuccessfully.

 In my test case, I have 2 hidden services running on a machine. Both have
 been started up for the first time in the past 5-10 minutes. On the same
 machine, I open concurrently two socks connections, one to each hidden
 service. Reiably, one of the socks connections succeeds, and the other
 fails. After it starts failing, retries using that onion address continue
 to fail for several minutes.

 Kind of looks like one socks request is breaking the other one. This seems
 similar to #16501 and #15937 but I am pretty sure I am only making 2 socks
 connections, to two different onion addresses.

 Attached log shows this occurring, and then after a while the bad state
 cleared and a retry to connect to the hidden service that it had not been
 able to resolve succeeded.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21056>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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