[tor-bugs] #9862 [Stem]: Tor hangs if you ask it to open too many ORPorts

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#9862: Tor hangs if you ask it to open too many ORPorts
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     Reporter:  zwol    |      Owner:  atagar
         Type:  defect  |     Status:  new
     Priority:  normal  |  Milestone:  Tor: 0.2.5.x-final
    Component:  Stem    |    Version:  Tor: 0.2.4.17-rc
   Resolution:          |   Keywords:  tor-relay
Actual Points:          |  Parent ID:
       Points:          |
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Comment (by zwol):

 You can likely call '`tor_process.communicate()`' from a daemon thread to
 avoid this.

 That is approximately the workaround I put into my code.  May I suggest
 that as a first step here, the present need to do something like this
 should be documented?

   I've dug through python's subprocess module for over an hour so far
 trying to find a method to ignore further stdout content without a special
 puller thread but no luck so far.

 So I recognize that this probably would require changes to Tor as well as
 Stem, but the fact that Stem needs to parse log messages in the first
 place seems like the ''real'' bug here.  What exactly is it doing with
 them, and can we think of a better technique?  Maybe a new command line
 option which tells Tor to close file descriptor N when it reaches a
 certain level of initializedness, or something like that?

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/9862#comment:7>
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