And also consider a distributed case where you can have a inbound proxy/Registrar+Location Service, and a B2BUA. In such case, issuing the appropriate answer may be a distributed responsibility, where 404 may be issued by the Proxy, while other types of 4xx responses may be issued by the B2BUA. In this situation, the "collection" of developers of the combined Proxy + B2BUA "Server" may need to implicitly consider both scenarios as different and trigger different service logic (in one case, answer back 404, otherwise forward upstream toward B2BUA), regardless of them being the same set of developers, or even not knowing each other at all.
My 2cents, David El 12/08/2011 9:47, Iñaki Baz Castillo escribió: > 2011/8/12 Joegen E. Baclor<[email protected]>: >> In real life, when there is no binding in the registrar for such AOR, except >> for some cases where a redirect to voicemail is an option, do developers >> really code the registrar to bother looking up the user database just to >> determine a 480 versus a 404 response? > It's just a single query to check whether an AoR exists in the > provider system or not. > > >> Disclaimer: Just curious what people do. > I do :) > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
