[tor-bugs] #4663 [Tor Client]: Tor proxy settings bypassed when proxy is down/broken

Tor Bug Tracker & Wiki torproject-admin at torproject.org
Tue May 8 15:22:29 UTC 2012


#4663: Tor proxy settings bypassed when proxy is down/broken
---------------------------+------------------------------------------------
    Reporter:  DasFox      |       Owner:          
        Type:  defect      |      Status:  assigned
    Priority:  major       |   Milestone:          
   Component:  Tor Client  |     Version:          
  Resolution:              |    Keywords:          
      Parent:              |      Points:          
Actualpoints:              |  
---------------------------+------------------------------------------------

Comment(by cypherpunks):

 Replying to [comment:18 arma]:
 > Just to be clear, has anybody confirmed that setting the Httpsproxy
 torrc option does not allow any proxy bypass by Tor? We're all assuming
 that the original bug reporter just got confused by Vidalia's (bad)
 interface.

 I've replicated similar behaviour using Tor v0.2.2.35 and Vidalia 0.2.17
 where Tor ignores the configured proxy settings entirely. This only seems
 to affect a Windows XP SP3 machine.

 The XP machine is in front of a firewall which only permits a proxy access
 to the network. Therefore all attempts for this machine to download the
 directory are expected to fail. It must make results using the proxy for
 successful connection.

 However when configuring a HTTP\HTTPS proxy - Tor simply ignores the
 settings and attempts to go direct. Logging doesn't seem to report
 anything suspicious. I think it's a Tor issue as configuring torrc with
 'HTTPProxy' and running Tor direct also has the same issue.

 Can confirm Tor goes direct since PCAP shows SYN packets to various
 directory IP's (unanswered of course). My question - how can force Tor to
 use its configured proxy?

 Thanks :) John Payne

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/4663#comment:19>
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