[Pidgin] #9582: Yahoo transfers to non-contacts go into nowhere

[Pidgin]

#9582: Yahoo transfers to non-contacts go into nowhere
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Reporter:  dandv  |        Type:  defect   
  Status:  new    |   Component:  libpurple
 Version:  2.5.8  |    Keywords:           
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 This is a really odd bug, but I can reproduce it reliably with Pidgin
 2.5.6-8 on Windows XP PRO. The recipient (my sister, Kudos for helping me
 troubleshoot this) uses Yahoo! Messenger 9.0.0.2160 on Windows XP as well.

 How to reproduce:
 1. Start a chat session with a user who's not in your contact list
 2. Send them a file.
 3. Notice that the transfer starts instantly, without the recipient
 accepting it first.

 Where the file goes - that is a big mystery. I used NirSoft cports to show
 connections and there are 3 new connections established per transfer:

 pidgin.exe      TCP     10.72.106.159:3915      98.136.56.73
 (relay103.msg.sp1.yahoo.com):80    http
 pidgin.exe      UDP     127.0.0.1:3921
 pidgin.exe      UDP     127.0.0.1:3920

 The Yahoo! server varies. On a subsequent try, I got:

 pidgin.exe      TCP     10.72.106.159:4037      209.191.122.71
 (dimg1.msg.vip.mud.yahoo.com):80        http
 pidgin.exe      UDP     127.0.0.1:4042
 pidgin.exe      UDP     127.0.0.1:4043

 I can Wireshark if asked, but I have no idea what to look for.

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Ticket URL: <http://developer.pidgin.im/ticket/9582>
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