[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:
     Type:  defect        |         Status:  needs_revision
 Priority:  Medium        |      Milestone:  Tor: 0.2.???
Component:  Core Tor/Tor  |        Version:  Tor: 0.2.8.1-alpha
 Severity:  Normal        |     Resolution:
 Keywords:  029-proposed  |  Actual Points:
Parent ID:                |         Points:  medium
 Reviewer:                |        Sponsor:
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Changes (by teor):

 * status:  new => needs_revision


Comment:

 Please see my branch bug18963 on https://github.com/teor2345/tor.git for
 an attempt to fix this issue by trying both an authority and a fallback.

 This still isn't great if multiple fallbacks or authorities are
 blackholed.

 And it's a significant code change, it probably shouldn't go in 0.2.8.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18963#comment:1>
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