Sharan,
Nothing will be stored. Just return the previous contact stored:
In RFC 3665 :
Bob sends a register request to the Proxy Server containing no
Contact headers, indicating the user wishes to query the server for
the user's current contact list. Since the user already has
authenticated with the server, the user supplies authentication
credentials with the request and is not challenged by the server.
The SIP server validates the user's credentials. The server returns
a response (200 OK) which includes the user's current registration
list in Contact headers.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
++
REGISTER sip:10.115.1.102;transport=udp SIP/2.0
Via: SIP/2.0/UDP 10.115.200.200:6264;branch=z9hG4bK346460687.1356.0
From: +17867132000 <sip:[email protected]>;tag=1356.346460687.0
To: +17867132000 <sip:[email protected]>
Expires: 518400
Date: 2010-02-04_11:59:21
Route: <sip:cscfp-gm.ims.boca.nsn.com:5060;transport=udp;lr>
Call-ID: [email protected]
CSeq: 1 REGISTER
Max-Forwards: 70
Content-Length: 0
SIP/2.0 200 OK
From: +17867132000 <sip:[email protected]>;tag=1356.346460687.0
To: +17867132000 <sip:[email protected]>
CSeq: 1 REGISTER
Via: SIP/2.0/UDP 10.115.200.200:6264;branch=z9hG4bK346460687.1356.0
Call-ID: [email protected]
Contact:
<sip:[email protected]:6264;transport=udp>;audio;video;text;ex
pires=518340
Supported: outbound
Content-Length: 0
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
++
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of ext
Sharanabasavaraj Mathapati
Sent: Monday, February 01, 2010 9:53 AM
To: [email protected]
Subject: [Sip-implementors] Reg: REGISTRATION
Hi,
3261 says REGISTER message can have 0 or more contacts.
what if REGISTER doesn't have "contact" header? With which the binding
takes place?
Regards,
Sharan
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