________________________________________ From: [email protected] [[email protected]] On Behalf Of kanthu canty [[email protected]]
Regarding 4xx response: If 4xx response didn't contain MUST field(ex: 405 MUST contain "Allow" Header). If no "Allow" header is present, then do we need to discord that response or not??. As per RFC 3261, that response MUST contain "Allow" header. _______________________________________________ I know of no rule that a response must be discarded if it does not contain information that is required for a particular response code. And it seems to me to be a poor implementation choice to do so. Instead, I would have the SIP stack treat the response as a failure response (and perhaps continue with other forks). It is possible that the missing "Allow" header would make it difficult for the UAC to determine how to recover from the failure, but presumably it has a mechanism for handling INVITEs that fail without a determinable way to recover. Dale _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
