Re: [tor-bugs] #10543 [Tor]: count_useable_descriptors behaves badly when nothing in ExitNodes has the Exit flag (was: exit node not working)

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

#10543: count_useable_descriptors behaves badly when nothing in ExitNodes has the
Exit flag
------------------------+--------------------------------
     Reporter:  dhill   |      Owner:
         Type:  defect  |     Status:  new
     Priority:  normal  |  Milestone:  Tor: 0.2.4.x-final
    Component:  Tor     |    Version:  Tor: 0.2.4.19
   Resolution:          |   Keywords:
Actual Points:          |  Parent ID:
       Points:          |
------------------------+--------------------------------
Changes (by nickm):

 * component:  - Select a component => Tor
 * milestone:   => Tor: 0.2.4.x-final


Comment:

 Being marked with the Exit flag  according to the consensus means that you
 support at least two of the ports 80, 443, and 667.  It doesn't mean
 whether you're an exit node.

 Apparently when I set "exitnodes badcfe681de3510f43232bf97425b72ea9ec11d9"
 in my torrc, I get:
 {{{
 Jan 17 11:08:22.000 [notice] I learned some more directory information,
 but not enough to build a circuit: We need more descriptors: we have
 5012/5172, and can only build 0% of likely paths. (We have 98% of guards
 bw, 96% of midpoint bw, and 0% of exit bw.)
 }}}

 Oh, interesting!  This isn't the bug you thought it was.  The issue is
 that if you have a set of ExitNodes none of which get the Exit flag, Tor
 never decides that it has enough descriptors to build circuits.  That's
 our bug!

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/10543#comment:1>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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