[tor-bugs] #28458 [Core Tor/sbws]: Stop resolving domains locally and stop using non-exits as 2nd hop

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#28458: Stop resolving domains locally and stop using non-exits as 2nd hop
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 Reporter:  juga           |          Owner:  juga
     Type:  defect         |         Status:  needs_revision
 Priority:  Medium         |      Milestone:
Component:  Core Tor/sbws  |        Version:  sbws: 1.0.0
 Severity:  Normal         |     Resolution:
 Keywords:                 |  Actual Points:
Parent ID:                 |         Points:
 Reviewer:                 |        Sponsor:
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Comment (by juga):

 Replying to [ticket:28458 juga]:
 > To check if an exit can exit to the destination, sbws is trying to
 resolve the domain locally, which fails in many cases.
 > Even if it does not fail, the IP obtained won't be the same IP to which
 the exit will make the HTTP request in the case of a CDN.
 > When the domain resolution is failing, sbws try to choose other relay
 that does not have the exit flag. If it is not an exit, it will fail to
 make an HTTP request.
 > sbws will also be faster and give less errors not resolving domains
 locally.

 Edit: in a CDN

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/28458#comment:6>
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