[SIPForum-discussion] How to handle retransmission of SIP packets

[vinoth.natarajan at wipro.com]

Ideally, you are not going to process the second one! When your serve
has identified this is a re-transmitted or a duplicate packet (using
Cseq.. or any other means) the response for the first processed message
will be sent out and the second message is discarded.
In fact what I think is the server CANNOT not respond twice because even
though they are two messages it's a single request and even the client
is expecting a single response from the server.

Regards,
Vinoth N

-----Original Message-----
From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of Nikhil Devyalayam
Sent: Friday, February 26, 2010 1:42 AM
To: discussion at sipforum.org
Subject: [SIPForum-discussion] How to handle retransmission of SIP
packets

Hi all
     If any SIP packet got retransmitted because of some reason , do we 
need to respond for every retransmitted packet or just accept one and 
ignore others? Example: If any SIP server got same PUBLISH packet two 
times which is retransmitted,do we need to send back 200 OK for both ,or

send 200 OK for one and ignore the second.? Please help me on this...

Thanks
Nikhil
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