On Fri, Jun 10, 2011 at 1:46 PM, Iñaki Baz Castillo <[email protected]> wrote:
> 2011/6/10 Bob Penfield <[email protected]>: > > Except for 100 (Trying), a 1xx should always be forwarded upstream toward > the UAC. Remember, all transactions complete independently. There may be a > 2xx final response right behind the 1xx response. The CANCEL can only change > the state of an INVITE transaction in the UAS. > > Yes, exactly what I had in mind :) > I just wonder how useful is relaying a 1XX response upstream in case > the proxy has sent a CANCEL upon the arrival of such response. > > But anyhow it's fully clear. Thanks a lot. > Not clear to me though. If proxy has received a CANCEL from Alice it should terminate the transaction. Then when Bob replies with 1xx, the transaction would not exist on the proxy. In which case hould proxy forward this 1xx upstream to Alice? Regards, > > > > -- > Iñaki Baz Castillo > <[email protected]> > > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
