Sreekanth <sknt...@gmail.com> writes: > I am going through the SIP RFC (3261) and couldn't find anything specified > regarding the 401 Unauthorized challenge response from the UAS side during > a registration. > > I wanted to confirm whether it is okay to add a *Require *header into this > 401 Unauthorized message response.
What would be the point? The concept of a Require header is "the UAS is required to reject the request (420) if it doesn't understand the option-tag". If a *response* had a Require header, either the UAC understands the option-tag and processes the response as normal, or it doesn't understand the option-tag ... and then what does it do? It can't send a 420 response *to a response*. Dale _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
