2011/4/18 Kevin P. Fleming <[email protected]>: >> 1.UA cancels the request. proxy responds with 200 Ok . >> 2.Proxy sends CANCEL to UAS& uAS respond with 200 ok. >> 3.UAS sends 487 to proxy& proxy send ACK . >> 4.But proxy sends 487 request termination to UA with Cseq header as CANCEL >> (which should be INVITE) .So UA waits for a while re sends CANCEL request. >> proxy responds with 481 call/transaction leg doesn't request. > > Is the device you are calling 'proxy' an actual proxy, or a B2BUA? The > expected behavior could differ substantially based on that.
It's a bug being a proxy or a B2BUA as the 487 to the UA indicates method "CANCEL" in the CSeq (rather than the correct INVITE). -- Iñaki Baz Castillo <[email protected]> _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
