Hi all I have a doubt regarding a refreshing registration. Assume that a User-Agent A has registered using the following REGISTER message with a proxy+registrar.
REGISTER sip:proxy.com SIP/2.0 Via:SIP/2.0/UDP ua1:5060 From:<sip:3251@ua1;User=phone>;tag=278100000000000000000715 To:<sip:3251@ua1;User=phone> Contact:<sip:3251@ua1;User=phone> Call-ID:01B2270D4881400000000000@ua1 CSeq:1 REGISTER Expires:180 Content-Length:0 A goes down and comes up again. It attempts to register and sends a registration with the SAME call-id and Cseq as before but with a DIFFERENT tag in the From header . How should the proxy treat the REGISTER and why ? Should it : (a)Consider the REGISTER as a retransmission from A or (b)Should it keep track of the 'Tag' and so treat the request as a new REGISTER ? In essence what is the role of the 'Tag' field in such a scenario, if any ? Thanks Prakash GS _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
