[Pidgin] #864: XMPP: Implement XEP-0172: User Nickname

[Pidgin]

#864: XMPP: Implement XEP-0172: User Nickname
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 Reporter:  fmoo         |       Owner:  nwalp
     Type:  enhancement  |      Status:  closed
Milestone:               |   Component:  XMPP
  Version:  2.0          |  Resolution:  fixed
 Keywords:               |
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Comment (by kabili207):

 The current implementation is incomplete as it does not inspect <message/>
 stanzas. According to section 4.2
 (http://www.xmpp.org/extensions/xep-0172.html#message):
     When a user begins to chat with a contact but the two parties have no
 pre-existing relationship or prior communications (e.g., no presence
 subscription or previous message exchange), the user SHOULD include the
 nickname with the first message sent to the contact.

 The current implementation only looks in <presence/> stanzas and
 explicitly ignores any that come from a contact that's not on the user's
 buddy list.

 As best as I can tell, we also never sending any nick info in a <message/>
 or <presence/>, although that should probably be a setting users can
 disable for the obvious security concerns.

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Ticket URL: <https://developer.pidgin.im/ticket/864#comment:9>
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