It's correct. The response must contain Contact header field values enumerating all current bindings. In the example UA is unregistering all bindings, so there are no current bindings hence an empty contact header.
-venkat -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Monica Chitre Sent: Tuesday, April 20, 2004 3:50 PM To: [EMAIL PROTECTED] Cc: Sasha Ruditsky Subject: [Sip-implementors] response to REGISTER with contact=* Hi All, RFC 3261 mentions that Contact header MUST be present in a response to a REGISTER message. But in looking at the un-REGISTER example in RFC 3665 (call flows), I see that when a REGISTER with contact=* and expires=0 is sent, then the response does not have a contact header. Is this correct? Should it have a contact header and if yes, what should it be set to, "*"? Regards, Monica. Monica Chitre RADVISION, Inc. 266 Harristown Road, Suite 201 Glen Rock, NJ 07452 Voice: 201-689-6365 Fax: 201-689-6301 _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
