> In a scenario where the request traverses a strict proxy, the URIs are > only shuffled around. In my case, the last proxy in chain is a loose > router, and it's the actual URI that is modified. > > Anyway, by my understanding of RFC3261, the Request-URI doesn't play > any role in mid-dialog requests when the request has arrived at the > UAS. I was just wondering whether such situation is permitted by the > standard.
The validity of a proxy modifying a mid-dialog Request-URI basically depends upon if able to defend it per the RFC. I did not lookup the various MUST, SHOULD, and equality rules to see what types of mid-dialog Request-URI proxy modifications are allowed when not done for strict/loose routing reasons. However even if allowed, I don't recommend doing it unless there is a good reason to do so; otherwise it can cause interoperability problems unless obviously valid. The vendor can likely explain (bug, configuration, ...) why they are mucking with the Request-URI. _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
