[Pidgin] #15524: 2.10.7 can not connect to ejabberd server

[Pidgin]

#15524: 2.10.7 can not connect to ejabberd server
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 Reporter:  jonbach                              |       Owner:  deryni
     Type:  defect                               |      Status:  pending
Milestone:                                       |   Component:  XMPP
  Version:  2.10.7                               |  Resolution:
 Keywords:  ejabberd jabber connect failed       |
  authentication                                 |
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Comment (by datallah):

 The related libpurple code hasn't changed between 2.10.6 and 2.10.7, but
 the Cyrus-SASL library used in the win32 builds was upgraded.  I don't
 have a way to easily test this since I don't have access to a server that
 is behaving like yours, but it looks like there might be a bug in how we
 were removing authentication mechanisms that wasn't problematic in Cyrus-
 SASL 2.1.22, but became a problem in 2.1.25.

 I've attached a [attachment:libjabber.dll libjabber.dll] that contains a
 potential fix.  Please replace the 2.10.7 `libjabber.dll` with the
 attached one and see if it resolves the issue (and please attach a new
 debug log obtained with the updated dll).

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Ticket URL: <https://developer.pidgin.im/ticket/15524#comment:5>
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