[tor-bugs] #15850 [Tor]: Don't assign HSDir flag to relay that can't handle BEGIN_DIR

["Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>]

#15850: Don't assign HSDir flag to relay that can't handle BEGIN_DIR
--------------------------+------------------------------------
 Reporter:  dgoulet       |          Owner:
     Type:  defect        |         Status:  new
 Priority:  major         |      Milestone:  Tor: 0.2.7.x-final
Component:  Tor           |        Version:
 Keywords:  026-backport  |  Actual Points:
Parent ID:  #15801        |         Points:  small
--------------------------+------------------------------------
 Child ticket of #15801.

 Because of #14202 (introduced in 0.2.6), directory authorities can assign
 the HSDir flag to a relay without a DirPort but relay can't handle
 `BEGIN_DIR` cell if they don't have the DirPort set (see #15849).

 Commit 80bed1ac96a3035f8c55ddced5528f0d7d16d386 should be reverted and
 backported. Right now, we have 8 directory authorities that are >= 0.2.6
 so we should backport this fix asap to 026.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/15850>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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