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Re: [Sip] Why do we need 3-way handshake for INVITE transaction....
Apart from offer-answer mechanism, INVITE transactions differ from other
transactions in following ways:
1. They take more time and often an user intervention is required.
2. Invites can be forked. And if multiple destinations send 200 OK, you
don't want to end up with multiple connections. Instead, 3-way handshake
allows the decision of accepting one of them delayed till Ack is sent by
the originator of the request.
Hence, it is very important to do reliable handshake at the time of session
establishment.
-Vishal
"Nataraju A.B."
<natarajuab@huawe To: sip@ietf.org
i.com> cc:
Sent by: Subject: [Sip] Why do we need 3-way handshake for INVITE
sip-admin@ietf.or transaction....
g
05/30/2003 02:04
PM
Hello All,
I have a doubt why do we really need 3-way handshaking for INVITE
transacation.
whereas most of the others employ 2-way handshaking (BYE/200,
UPDATE/200...).
According to my knowledge one of the reason could be offer-answer mechanism
involved in INVITE transactions.
Thanx in advance,
Regards,
-Nataraju A.B.
Huawei Technologies Ind Pvt Ltd,
Bangalore-560008,
+98455.95744
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Use sipping@ietf.org for new developments on the application of sip
_______________________________________________
Sip mailing list https://www1.ietf.org/mailman/listinfo/sip
This list is for NEW development of the core SIP Protocol
Use sip-implementors@cs.columbia.edu for questions on current sip
Use sipping@ietf.org for new developments on the application of sip