> Correct. I didn't realize that there were these MUST clauses > in section 8.2.6.2. It's interesting because the From/To URIs > and display names don't contribute to dialog matching, so in > theory why can't they be altered in a response? Was this done > for backward compatibility with RFC 2543?
There are also currently MUSTs concerning building requests within a dialog. Yes; per rfc3261, it is mostly for backward compatibility reasons. However security and race condition issues are often additionally sited concerning responses. Draft-ietf-sipping-update-pai discusses some security aspects of sending identities within a response. -brett _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
