>>Is a SIP proxy allowed to insert Option tags when forwarding a >>request? Not usually but this RFC allows it. I guess the reason is that protecting against a poxy's resource leakage is sometimes considered more important than allowing a call to proceed without the requirement. >> In that case, why "Require" is preferred than "Supported" in RFC4028?
The require is used because the proxy absolutely requires it. Regards, Attila ________________________________ From: [EMAIL PROTECTED] on behalf of Victor Pascual Ávila Sent: Wed 01/10/2008 18:43 To: sip-implementors@lists.cs.columbia.edu Subject: [Sip-implementors] SIP Proxy inserting Option Tags RFC3261 20.32 Require The Require header field is used by UACs to tell UASs about options that the UAC expects the UAS to support in order to process the request. RFC4028 8.1. Processing of Requests the proxy MAY insert a Require header field with the value 'timer' into the request. Is a SIP proxy allowed to insert Option tags when forwarding a request? In that case, why "Require" is preferred than "Supported" in RFC4028? Cheers, -- Victor Pascual Ávila _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
