[tbb-bugs] #26350 [Applications/Tor Browser]: MacOS Tor Browser cannot bind to port

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#26350: MacOS Tor Browser cannot bind to port
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 Reporter:  phoul                     |          Owner:  tbb-team
     Type:  defect                    |         Status:  new
 Priority:  Medium                    |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Normal                    |     Resolution:
 Keywords:                            |  Actual Points:
Parent ID:                            |         Points:
 Reviewer:                            |        Sponsor:
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Changes (by mcs):

 * cc: nickm (added)


Comment:

 Replying to [comment:3 cypherpunks]:
 > Maybe `sudo lsof -n -P | grep LISTEN | grep 9150` yet?

 The above command is a good thing to try, although if another process was
 listening on TCP port 9150 I would expect to see an "Address already in
 use" error (EADDRINUSE).

 The error message that is being logged is from EADDRNOTAVAIL, which is a
 strange error to get. My guess is something is wrong with the networking
 stack at the macOS level. The error could also be caused by a programming
 error inside tor such as not properly initializing the sockaddr passed to
 bind(), but if that were the case we would have a lot more reports like
 this one.

 Cc Nick in case he has seen this problem before.

 Colin — We could ask this user to try using different TCP ports for tor,
 although I am not convinced it will help. To do that they would need to
 add lines like the following to the prefs.js file within their Tor Browser
 profile (under ~/Library/Application Support/TorBrowser-
 Data/Browser/*.default):
  user_pref("network.proxy.socks_port", 9160);
  user_pref("extensions.torlauncher.control_port", 9161);

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/26350#comment:4>
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