[tor-bugs] #18963 [Core Tor/Tor]: Download authority certificates even under blackholed authorities or fallbacks

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#18963: Download authority certificates even under blackholed authorities or
fallbacks
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 Reporter:  teor                                 |          Owner:  teor
     Type:  defect                               |         Status:
 Priority:  Medium                               |  needs_review
Component:  Core Tor/Tor                         |      Milestone:  Tor:
 Severity:  Normal                               |  0.2.8.x-final
 Keywords:  must-fix-before-028-rc,              |        Version:  Tor:
  029-proposed, review-group-1, 029-nickm-       |  0.2.8.1-alpha
  unsure, 029-teor-yes, 028-teor-unsure          |     Resolution:
Parent ID:                                       |  Actual Points:
 Reviewer:  arma                                 |         Points:  small
                                                 |        Sponsor:
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Changes (by teor):

 * keywords:  must-fix-before-028-rc, 029-proposed, review-group-1, 029
     -nickm-unsure =>
     must-fix-before-028-rc, 029-proposed, review-group-1, 029-nickm-
     unsure, 029-teor-yes, 028-teor-unsure


Comment:

 This would be great in 0.2.9, nice to have in 0.2.8, but not essential
 (the 0.2.8 behaviour without this is no worse than 0.2.7).

 It's worth noting that if we don't merge this in 0.2.8, users with
 blackholed fallbacks will end up downloading a consensus, but failing (or
 experiencing delay) when downloading certificates. I think this is not
 ideal, but it is tolerable if we don't want to add more code to 0.2.8.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18963#comment:16>
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