[tor-bugs] #17750 [Core Tor/Tor]: Make bootstrapping clients wait before trying an authority

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#17750: Make bootstrapping clients wait before trying an authority
-------------------------------------------------+-------------------------
 Reporter:  teor                                 |          Owner:
     Type:  enhancement                          |         Status:
                                                 |  needs_review
 Priority:  Medium                               |      Milestone:  Tor:
                                                 |  0.3.2.x-final
Component:  Core Tor/Tor                         |        Version:  Tor:
                                                 |  0.2.8.1-alpha
 Severity:  Normal                               |     Resolution:
 Keywords:  tor-bootstrap 031-backport           |  Actual Points:  0.3
  030-backport 029-backport                      |
Parent ID:                                       |         Points:  2
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------
Changes (by teor):

 * status:  needs_revision => needs_review
 * keywords:  tor-bootstrap 030-backport 029-backport => tor-bootstrap
     031-backport 030-backport 029-backport


Comment:

 Please see my branch bug17750_029, which also adds some regression tests
 for this bug and #20534.

 I marked this for 0.3.1 backport. If we do backport, we only need to
 backport the squashed commit "Make clients try fallbacks before
 authorities".

 And we might not want to backport at all, given the risk of bugs in older
 versions. The only thing this bug causes is more load on the directory
 authorities.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/17750#comment:14>
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