[tor-bugs] #11200 [Tor]: cached consensus inteferes with DisableNetwork=1

[Tor Bug Tracker & Wiki]

#11200: cached consensus inteferes with DisableNetwork=1
--------------------+-------------------------------
 Reporter:  mcs     |          Owner:
     Type:  defect  |         Status:  new
 Priority:  normal  |      Milestone:
Component:  Tor     |        Version:  Tor: 0.2.4.21
 Keywords:          |  Actual Points:
Parent ID:          |         Points:
--------------------+-------------------------------
 When testing with a TBB 3.6b1 build on Mac OS 10.8.5, I noticed that
 sometimes tor tries to open a network connection even though it was
 started with DisableNetwork=1 (and bootstrapping proceeds but fails with a
 NOROUTE error).

 I can also reproduce this problem with TBB 3.5.2.1 (although the error
 message that is displayed by Tor Launcher is less detailed).

 Here is a log snippet from TBB 3.6b1 (tor 0.2.4.21):
 {{{
 ... [notice] Bootstrapped 5%: Connecting to directory server.
 ... [warn] connection_connect(): Bug: Tried to open a socket with
 DisableNetwork set.
 ... [warn] Problem bootstrapping. Stuck at 5%: Connecting to directory
 server. (Network is unreachable; NOROUTE; count 1; recommendation warn)
 ... [notice] We now have enough directory information to build circuits.
 ... [notice] Bootstrapped 80%: Connecting to the Tor network.
 ... [notice] New control connection opened.
 ... [warn] Problem bootstrapping. Stuck at 80%: Connecting to the Tor
 network. (Network is unreachable; NOROUTE; count 2; recommendation warn)
 ... [notice] DisableNetwork is set. Tor will not make or accept non-
 control network connections. Shutting down all existing connections.
 }}}

 This occurs when there is a cached-microdesc-consensus file (so not the
 first time I start the Tor Browser).

 Here are some steps to reproduce:

 1) Grab a build from here:
 https://people.torproject.org/~mikeperry/builds/3.6-beta-1/

 2) Start Tor Browser and click "Connect" when the wizard opens.  Let it
 connect.

 3) Exit the browser and delete the file
 Data/Browser/profile.default/prefs.js.

 4) Start Tor Browser a second time.  You will see an error "Connecting to
 the Tor network failed (no route to host)."

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/11200>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online