[tor-bugs] #30477 [Core Tor/Tor]: Tor should self-test reachability of TCP listeners exposed by PT's

[Tor Bug Tracker & Wiki]

#30477: Tor should self-test reachability of TCP listeners exposed by PT's
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     Reporter:  ahf           |      Owner:  (none)
         Type:  task          |     Status:  new
     Priority:  Medium        |  Milestone:  Tor: unspecified
    Component:  Core Tor/Tor  |    Version:  Tor: unspecified
     Severity:  Normal        |   Keywords:  tor-pt
Actual Points:                |  Parent ID:  #30472
       Points:                |   Reviewer:
      Sponsor:  Sponsor19     |
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 It would be useful if Tor would do self-test of TCP port reachability for
 bridge listeners and not just the ORPort itself.

 Currently when a bridge operator starts their Bridge Relay, Tor will test
 whether their ORPort is available from the internet, but we do not test
 the reachability of, for example, the obfs4 TCP port.

 We believe that *just* testing for whether the port is available to the
 internet is better than to actually test if the port, for example, is able
 to speak the obfs4 protocol.

 We should probably have a way to disable the warning that is emitted if a
 port is not reachable if, for example, the bridge is actually lying to Tor
 about its port, does not have a port, or the port is exposed via UDP
 instead of TCP.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30477>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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