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[tor-bugs] #20795 [- Select a component]: Torbrowser crashes if it can't DNS resolve the Socks5Proxy host in torrc

#20795: Torbrowser crashes if it can't DNS resolve the Socks5Proxy host in torrc
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     Reporter:  gaffer206             |      Owner:
         Type:  defect                |     Status:  new
     Priority:  Medium                |  Milestone:
    Component:  - Select a component  |    Version:
     Severity:  Normal                |   Keywords:
Actual Points:                        |  Parent ID:
       Points:                        |   Reviewer:
      Sponsor:                        |
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 Using Torbrowser 6.0.6 on OS X Yosemite.

 When in the office behind our corporate firewall I configure Torbrowser to
 use our socks5 proxy.

 When at home Torbrowser crashes on launch.

 If I delete the Sock5Proxy line from torrc it works.

 If I put a dummy entry for my office socks proxy host in /etc/hosts
 torbrowser doesn't crash.

 Tor should trap a failed DNS resolve when validating the proxy config on
 launch and tell the user that it can't connect to the internet.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20795>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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