Francois Audet writes: > Section 4.3 states (UA procedures): > If the UAC is sending a dialog-forming request, and wants all > subsequent requests in the dialog to arrive over the same flow, the > UAC adds an 'ob' parameter to its Contact header. Typically this is > desirable, but it is not necessary for example if the Contact is a > GRUU [I-D.ietf-sip-gruu].
if contact is gruu, does it mean that 'ob' param is implicitly included? > Then, section 5.3.2 (proxy procedures): > For mid-dialog requests to work with outbound UAs, the requests need > to be forwarded over some valid flow to the appropriate UA instance. > If the Edge Proxy receives an outgoing dialog-forming request, the > Edge Proxy can use the presence of the ob URI parameter in the UAC's > Contact URI (or topmost Route header field) to determine if the Edge > Proxy needs to assist in mid-dialog request routing. if there is no edge proxy, i.e., UA sends subscribe directly to a presence server, then does this draft not apply and there is no mechanism for the UA to indicate that it wants subscribe tcp connection to be reused by presence server for notifies? -- juha _______________________________________________ Sip mailing list https://www.ietf.org/mailman/listinfo/sip This list is for NEW development of the core SIP Protocol Use [EMAIL PROTECTED] for questions on current sip Use [EMAIL PROTECTED] for new developments on the application of sip
