[Pidgin] #1035: Cannot login into any account through a proxy

[Pidgin]

#1035: Cannot login into any account through a proxy
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  Reporter:  kunalashar    |       Owner:  MarkDoliner
      Type:  defect        |      Status:  new        
  Priority:  major         |   Milestone:  2.1.0      
 Component:  pidgin (gtk)  |     Version:  2.0        
Resolution:                |    Keywords:             
   Pending:  0             |  
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Comment (by kunalashar):

 I tried using other IM apps such as Miranda and Trillian. They too had the
 same problem.

 Miranda IM reported an error message that says "HTTP/1.1 502 Proxy Error
 (The specified Secure Sockets Layer (SSL) port is not allowed. ISA Server
 is not configured to allow SSL requests from this port. Most Web browsers
 use port 443 for SSL requests.)".

 Apparently this is caused by the default behavior of Microsoft ISA server,
 which only allows requests to ports 443 and 563 using its HTTP Connect
 method. (Primary use of HTTP Connect is to allow SSL connections to HTTPS
 servers). The Microsoft Knowledge Base article Q283284 addresses this
 issue.

 Could this be the reason for the problem in Pidgin?

-- 
Ticket URL: <http://developer.pidgin.im/ticket/1035#comment:17>
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