Yahoo! IMs received in pairs, one duplicate of the other

Mark Doliner mark at
Fri Jun 19 13:54:16 EDT 2009

On Fri, Jun 19, 2009 at 9:54 AM, Sulabh Mahajan< at> wrote:
> Hello everyone,
> Recently I observed a strange behavior. While chatting with a friend on
> Yahoo, I received a "duplicate copy" of each IM being sent to me after a few
> seconds of receiving the original IM. Etan Reisner (deryni) says it has been
> reported before. I was unable to find a ticket for it. If someone knows
> anything about this issue please let me know.
> As much as I have researched, this is what I have come to know: A duplicate
> message packet arrives after 7 secs, this packet has a key 450 with value 1.
> This same key has value 0 for the original packet.
> Since my conclusion is based upon a single instance with a single contact,
> before coding a patch for it, I wish to know if someone else has seen this
> behavior.

FYI I think Sulabh and I both working on this.  We're both in #pidgin
on  It seems to happen when sending a message from
Yahoo Messenger on Windows XP to Pidgin trunk.

I don't know if there is a Pidgin ticket, but the Adium ticket is


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