Replies inline...
On Fri, 4 Mar 2005 14:53:25 -0500, Reinaldo Penno <[EMAIL PROTECTED]> wrote: > Hello, > > I read the list archives but couldn't find a definite answer on an > issue. > > A client sends a REGISTER message to a SIP Proxy, which changes the > Contact: header to itself, but leaves the From: intact. The message is > then forwarded to the REGISTAR. Some questions: > > *Is this enough to guarantee that inbound messages will be directed to > such Proxy? Assuming of course the Registar is queried by other Proxies? Yes. > > * Is it guaranteed that the 200OK for the REGISTER will go through the > Proxy? Given that Record-Route is not processed in REGISTER messages I > got the impression that the REGISTAR could (at least theoretically) send > the 200OK message directly to the endpoint Yes. Response traversal always use the Via header. Contact is only used for subsequent requests. > > Does this Proxy registration mechanism have any implication in REGISTER > call flows where authentication is used? Should not be. Any challenge issued by the Registrar should reach the UA that issued the REGISTER request. > > I looked at RFC3327 but it seems in that case the Contact: header isn't > changed. Besides it seems to assume that DNS is not used. > > Finally, how widespread is RFC3327? > > Thanks, > > Reinaldo > > _______________________________________________ > Sip-implementors mailing list > [email protected] > http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > _______________________________________________ Sip-implementors mailing list [email protected] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
