[tor-bugs] #20761 [Applications/Tor Launcher]: Tor Browser 6.5a4 is ignoring additional SocksPorts

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#20761: Tor Browser 6.5a4 is ignoring additional SocksPorts
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 Reporter:  gk                         |          Owner:  brade
     Type:  defect                     |         Status:  needs_information
 Priority:  Medium                     |      Milestone:
Component:  Applications/Tor Launcher  |        Version:
 Severity:  Normal                     |     Resolution:
 Keywords:  TorBrowserTeam201612       |  Actual Points:
Parent ID:                             |         Points:
 Reviewer:                             |        Sponsor:
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Comment (by arthuredelstein):

 Replying to [comment:8 mcs]:
 > > It seems clear we don't want to save an ephemeral `SocksPort
 /one/time/path` line to the torrc file. So I suppose one (somewhat
 awkward) option, instead of using `SAVECONF`, would be to load the
 settings into a string using `GETINFO CONFIG-TEXT`, remove the line with
 the unix-domain SocksPort (that was created for this session only), and
 then write the torrc file directly from JavaScript.
 >
 > That is an interesting idea but possibly fragile, since it might be
 tricky to figure out for sure which lines to filter out before rewriting
 torrc. Kathy and I will think about this a little more.

 Because you know the domain socket path (in `socksPortInfo.ipcFile`), I
 think you can use an exact match to filter that line out.

 One alternative solution would be to remove old unix-domain SocksPort
 settings from the config settings before you issue `saveconfig`. You could
 read them all in using `getconf socksport` and then set all but the
 obsolete ones using `setconf socksport a socksport b` again. There would
 need to be a way to distinguish obsolete Tor Launcher SocksPorts from
 user-added SocksPorts, however, which might be difficult.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20761#comment:10>
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