________________________________________ From: [email protected] [[email protected]] On Behalf Of Robert Hoffmann [[email protected]]
a) I am not sure about what the practical benefit of hop-by-hop methods like CANCEL or ACK (for 3XX-6XX responses) is. b) Also, why is 100 Trying a hop-by-hop response? Would it hurt to have it being end-to-end? _______________________________________________ A more interesting case is: UAC sends INVITE to a proxy, which sends the INVITE to UAS1. After ringing UAS1 for 2 minutes, the proxy wishes to terminate ringing at UAS2 and send the INVITE to UAS2, and allow it to ring for 2 minutes before cancelling the call. And let us allow that all hops are UDP, so the initial send of INVITE along each hop was lost by the network, and the sender must re-send the UDP message. Let us also assume that we want the proxy to handle the complexity of this, rather than returning a 3xx response to the UAC to force it to handle the forking. Please diagram how this situation would proceed using only end-to-end responses. Dale _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
