[Pidgin] #17027: Pidgin gives "Unknown Host" error on certificate error on xmpp

[Pidgin]

#17027: Pidgin gives "Unknown Host" error on certificate error on xmpp
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 Reporter:  hjheins      |      Owner:  deryni
     Type:  enhancement  |     Status:  new
Milestone:               |  Component:  XMPP
  Version:  2.10.12      |   Keywords:  ssl tls certificate error unknown
                         |  host
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 When pidgin connects to a client that has an expired or otherwise false
 certificate, it displays an "Unknown Host" error message. It does so in
 both the gui as the debug window. Though in the debug it is actually
 possible to see that the DNS resolving works. This makes troubleshooting a
 certificate issue actually quite hard.

 Steps to reproduce: take an expired or otherwise false certificate on your
 xmpp server, and try to connect. (in my case I used ejabberd with an
 expired/old certificate).

 Please change this so that the error will be a bit more helpful.

 thanks.

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Ticket URL: <https://developer.pidgin.im/ticket/17027>
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