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. We have an answer for REGISTER(with Credentials) without Contact... But REGISTER (without credentials) without Contact, why do we need to authenticate?
-vijay --- On Thu, 21/5/09, Shanbhag, Somesh (NSN - IN/Bangalore) <[email protected]> wrote: From: Shanbhag, Somesh (NSN - IN/Bangalore) <[email protected]> Subject: RE: [Sip-implementors] REGISTER without Contact To: "ext friend friend" <[email protected]>, "sip fourm" <[email protected]> Date: Thursday, 21 May, 2009, 11:43 AM If the REGISTER is coming without credentials and without Contact, basically that means it's a Query. So, I think we need to challenge it again because we cannot send the contacts to a intruder. Somesh -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of ext friend friend Sent: Thursday, May 21, 2009 11:40 AM To: sip fourm Subject: [Sip-implementors] REGISTER without Contact Dear Friends, If the REGISTER(With Credentials) message without Contact header coming from UA, REGISTRAR server should send 200 OK with contact list of the incoming user But If the REGISTER(without Credentials) message without Contact header coming from UA, what will be the response from Registrar server? Long back i read some info regarding this issue. just am saying. please correct me if i am wrong If the REGISTER(without Credentials) message without Contact header coming from UA, Registrar respond with 200 OK without contact. Thanks n Advance Regards, vijay Cricket on your mind? Visit the ultimate cricket website. Enter http://beta.cricket.yahoo.com _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors Explore and discover exciting holidays and getaways with Yahoo! India Travel http://in.travel.yahoo.com/ _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
