[tor-bugs] #19129 [Core Tor/Tor]: Allow Fallback Directories with no DirPort

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#19129: Allow Fallback Directories with no DirPort
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     Reporter:  teor          |      Owner:
         Type:  enhancement   |     Status:  new
     Priority:  Medium        |  Milestone:  Tor: 0.2.???
    Component:  Core Tor/Tor  |    Version:
     Severity:  Normal        |   Keywords:
Actual Points:                |  Parent ID:  #7798
       Points:  2             |   Reviewer:
      Sponsor:                |
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 In #12538, we made almost every relay support begindir-style directory
 fetches. In #18483, we made clients never use DirPorts. Both of these
 features are scheduled for 0.2.8.

 Eventually, we can allow fallback directories with no DirPort.
 (Perhaps this works already with a zero DirPort?)
 If we implement #7798, we might want this feature, but only for directory
 guards in the state file.

 If we want to include fallback directories with no DirPort in the default
 fallback list, we will need to make some some changes to the fallback
 directory checks in scripts/maint/updateFallbackDirs.py. In particular,
 stem can't do begindir, so it will be harder to verify these fallback
 directories have connectivity and support begindir. So maybe we should
 require a DirPort for fallback directories for the moment.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/19129>
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