If the UA does not provide a contact address, how does the proxy know where to send messages?
Typically, a UA wanting anonymity puts an anonymous URI in its from. If you truly want to hide the UA's address, you need a B2BUA instead of a proxy at the edge of the UAs network. It would look like the UAS to the local/initiating UA and the UAC to the far end. cheers, (-:bob ----- Original Message ----- From: "Alexeitsev, D" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]> Sent: Wednesday, May 29, 2002 10:59 AM Subject: AW: [Sip-implementors] Question on Contact: header Thank you for the response I mean is there something like sip:[EMAIL PROTECTED] for Contact: header if the UA wants hide its address and always be contacted by the address in From: header that points to its proxy? Greetings, Denis Alexeitsev -----Urspr�ngliche Nachricht----- Von: Bob Penfield [mailto:[EMAIL PROTECTED]] Gesendet am: Mittwoch, 29. Mai 2002 15:58 An: Alexeitsev, D; [EMAIL PROTECTED] Betreff: Re: [Sip-implementors] Question on Contact: header Hi Denis, The Contact always contains the UA's URI (address/FQDN). A proxy wishing to remain on the path adds a Record-Route header with its URI to the request. These Record-Route headers are reflected in the response. The set of URIs in the Record-Route headers establishes the route-set in the two UAs for the dialog, assuming the request is one that establishes a dialog (like INVITE). The Contact header establishes the Remote-Target for the dialog. When one of the UAs wants to send a request for that dialog (e.g. BYE), it includes Route headers with the route-set, and uses the Remote-Target as the Request-URI. cheers, (-:bob Robert F. Penfield Chief Software Architect Acme Packet, Inc. 130 New Boston Street Woburn, MA 01801 [EMAIL PROTECTED] ----- Original Message ----- From: "Alexeitsev, D" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, May 29, 2002 8:57 AM Subject: [Sip-implementors] Question on Contact: header > Hello All > > What should be put in the Contact header if the UA will never be directly contacted and only through the proxy? > Is it it's proxy address? > > Thanks, > Denis Alexeitsev > _______________________________________________ > 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
