[tor-bugs] #13920 [Tor Launcher]: If the ports tor wants to use are already in use, try different ports before freaking out.

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#13920: If the ports tor wants to use are already in use, try different ports
before freaking out.
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     Reporter:  StrangeCharm  |      Owner:  brade
         Type:  defect        |     Status:  new
     Priority:  minor         |  Milestone:
    Component:  Tor Launcher  |    Version:
   Resolution:                |   Keywords:
Actual Points:                |  Parent ID:
       Points:                |
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Comment (by StrangeCharm):

 A possible solution is using tor's `auto` port option to pick a port that
 works and write that to a file. Then Tor Launcher just needs to try
 reading that file and binding to that tor.

 Apparently this is problematic on Windows though because some Windows
 firewalls assume that anything which tries to get a port the way tor does
 with `auto` is malware. Still, that shouldn't be a worry for other
 platforms.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13920#comment:2>
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