[tor-bugs] #15801 [Tor]: Relay with HSDir flag but no DirPort fail to respond to BEGIN_DIR

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#15801: Relay with HSDir flag but no DirPort fail to respond to BEGIN_DIR
------------------------------+------------------------------------
 Reporter:  dgoulet           |          Owner:
     Type:  defect            |         Status:  new
 Priority:  major             |      Milestone:  Tor: 0.2.7.x-final
Component:  Tor               |        Version:
 Keywords:  SponsorR, tor-hs  |  Actual Points:
Parent ID:                    |         Points:
------------------------------+------------------------------------
 Because of #14202, directory authorities now can assign HSDir flag to a
 relay without a DirPort. However, relays don't accept BEGIN_DIR cells if
 `options->DirPort_set` is set to 0 (see
 `directory_permits_begindir_requests()`).

 This is very problematic right now because as I'm opening this bug, we
 currently have 4348 HSDir in the consensus but 1497 of them (34%) of them
 don't have a DirPort thus not working.

 Unless all relay updates with the patch, this situation will continue thus
 we should maybe bring back the need for a DirPort to get the HSDir flag on
 the autority sides?

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/15801>
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