[Pidgin] #5192: HTTP only connections to MSN broken. Protocol change?

[Pidgin]

#5192: HTTP only connections to MSN broken.  Protocol change?
-----------------------+----------------------------------------------------
 Reporter:  marked23   |       Type:  defect
   Status:  new        |   Priority:  minor 
Component:  libpurple  |    Version:  2.4.0 
 Keywords:             |    Pending:  0     
-----------------------+----------------------------------------------------
 I use pidgin through a firewall that only allows http connections for IM.
 On March 11th, I noticed that pidgin could not connect to any of my msn
 based accounts.  The problem persists.  I am able to connect to these
 accounts using http, if I use Windows Messenger 5.1 (5.1.0706).  So I
 suspect there is something about the login protocol that MS changed around
 March 11th.

 {{{
 (12:13:10) account: Connecting to account <redacted>@hotmail.com
 (12:13:10) connection: Connecting. gc = 01A03280
 (12:13:10) msn: new httpconn (01A07AA8)
 (12:13:10) dnsquery: Performing DNS lookup for
 gateway.messenger.hotmail.com
 (12:13:10) msn: C: NS 000: VER 1 MSNP9 MSNP8 CVR0
 (12:13:10) dnsquery: IP resolved for gateway.messenger.hotmail.com
 (12:13:10) proxy: Attempting connection to
 207.<redacted>.<redacted>.<redacted>
 (12:13:10) proxy: Connecting to gateway.messenger.hotmail.com:80 with no
 proxy
 (12:13:10) proxy: Connection in progress
 (12:13:10) GLib-GObject: invalid cast from `GtkEventBox' to `GtkButton'
 (12:13:10) Gtk: gtk_button_get_relief: assertion `GTK_IS_BUTTON (button)'
 failed
 (12:13:10) proxy: Connected to gateway.messenger.hotmail.com:80.
 (12:13:11) msn: S: NS 000: VER 1 MSNP9 MSNP8 CVR0
 (12:13:11) msn: C: NS 000: CVR 2 0x0409 winnt 5.1 i386 MSNMSGR 6.0.0602
 MSMSGS <redacted>@hotmail.com
 (12:13:13) msn: HTTP: Read error
 (12:13:13) msn: Connection error from Notification server
 (gateway.messenger.hotmail.com): Reading error
 (12:13:13) msn: C: NS 000: OUT
 (12:13:13) account: Disconnecting account 00C79DD0
 (12:13:13) connection: Disconnecting connection 01A03280
 (12:13:13) msn: destroy httpconn (01A07AA8)
 (12:13:13) connection: Destroying connection 01A03280
 (12:13:13) GLib-GObject: invalid cast from `GtkEventBox' to `GtkButton'
 (12:13:13) Gtk: gtk_button_get_relief: assertion `GTK_IS_BUTTON (button)'
 failed
 (12:13:14) util: Writing file prefs.xml to directory C:\Documents and
 Settings\<redacted>\Application Data\.purple
 (12:13:14) util: Writing file C:\Documents and
 Settings\<redacted>\Application Data\.purple\prefs.xml
 (12:13:15) util: Writing file accounts.xml to directory C:\Documents and
 Settings\<redacted>\Application Data\.purple
 (12:13:15) util: Writing file C:\Documents and
 Settings\<redacted>\Application Data\.purple\accounts.xml
 }}}

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Ticket URL: <http://developer.pidgin.im/ticket/5192>
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