> Question is: Should the To in that (re)INVITE > contain ';foo=bar' ??? > > AFAIK the contents of that To header are to be generated > from dialog state information. The URI and the tag are > part of that state, but other header parameters from the > original INVITE are not, and hence would not be available > for the addressing of subsequent messages. > > Does anyone have a different opinion?
Partially. > If so, can you justify it? If really supposed to only use dialog state information, all the RFCs showing display-name within To and From of requests within dialog are incorrect: rfc3665, rfc3666, rfc5359, and etcetera. However AFAIK, rfc3261 is silent concerning if To and From's non dialog related content should or should not continue to be sent within subsequent requests within dialog. Concerning your foo=bar question, I agree that it is valid to drop the parameter. Sections 20.20 and 20.39 (and silence of 12.2.1.1) indicate that it is valid. However as you noticed, such behavior can cause interoperability problems. _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
