[tor-bugs] #2503 [Tor Client]: Tor describes HTTPS proxy 403 errors as 'unexpected status code'

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#2503: Tor describes HTTPS proxy 403 errors as 'unexpected status code'
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 Reporter:  rransom     |       Owner:     
     Type:  defect      |      Status:  new
 Priority:  normal      |   Milestone:     
Component:  Tor Client  |     Version:     
 Keywords:              |      Points:     
   Parent:              |  
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 When Tor tries to connect to a relay or bridge through an HTTPS proxy, and
 the CONNECT request is rejected with a 403 error code (meaning
 'Forbidden'), Tor describes the 403 response as an 'unexpected status
 code'.  403 errors should be logged with a more correct/useful message,
 and there are probably other error codes we should describe better as
 well.

 For 403 errors, we could log `"... proxy refused to allow connection to
 %s"`.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/2503>
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