Pascal, Normally the route-set is established in the first Request/Response pair. Therefore for subsequent requests in the same dialog, the Record-Route headers in the response message need to be inverted and placed in the Route header.
Although generally SUBSCRIBE transaction triggers immediate dialog , Consider a race-condition when you need to send a subsequent SUBSCRIBE before the first NOTIFY is routed to the SIP UE. Regards, Harsha On 21/02/2008, Pascal Maugeri <[EMAIL PROTECTED]> wrote: > > Hi > > In a SUBSCRIBE dialog, where should I read the Route-Set from for > subsequent > re-SUBSCRIBE ? From the SUBSCRIBE-OK response or from the first NOTIFY > request ? > > And then should I respect the exact order when forming the Route headers > or > should I invert the order ? > > For instance, I send an initial SUBSCRIBE request and I receive: > > (a) SUBSCRIBE response > > SIP/2.0 200 OK > Record-Route: <sip:10.1.1.7;lr> > Record-Route: <sip:[EMAIL PROTECTED];lr> > [...] > > then > > (b) first NOTIFY of the dialog > > NOTIFY sip:[EMAIL PROTECTED]:5060 SIP/2.0 > Record-Route: <sip:[EMAIL PROTECTED];lr> > [...] > > In my subsequent SUBSCRIBE should I use the Route-Set received in (a) or > (b) > ? If I use the route-set of (a) should I keep the exact order, or invert > it > ? > > Thanks in advance for your help > Pascal > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > -- Regards Harsha _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
