________________________________________ From: [email protected] [[email protected]] On Behalf Of rajanikanth.ha [[email protected]]
In section 13.2.2.4 2xx Responses of RFC3261 The ACK MUST contain the same credentials as the INVITE. UAC UAS 1.INVITE ------------> 2. <------------407-INVITE 3.ACK---------------> Do i have to check credentials in the ACK message sent in the step 3 with that of INVITE request sent in step1? _______________________________________________ No, the recipient of the ACK does not have to check this requirement. The purpose of the requirement is to ensure that the ACK is not blocked by a lack of credentials (because no downstream element can give a 401/407 response to the ACK to request credentials). But the recipient of the ACK does not need to check that it has the same credentials as the INVITE, and it probably should not check this requirement (in order to provide somewhat more robust operation if the sender does not follow the requirement). Dale _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
