� see 21.4.5, it says "This status is also returned if the domain in the Request-URI does not match any of the domains handled by the recipient of the request. "
On Mon, 26 Apr 2004 King Yu wrote : >Vivek, > >What do you mean by "proxy does not know b.com"? If it means the proxy considers >"b.com" a domain it is NOT responsible for, then 16.5 paragraph 3 should have taken >effect (rather than reply 404); that is, the proxy would have forwarded the request >to b.com by DNS resolution. > >And what do you mean by "can't forward the message there"? Hmmm... based on 21.4.18 >(which I haven't read when I first posted my first mail in this thread): >"This status is also returned by a redirect or proxy server that recognizes the user >identified by the Request-URI, but does not currently have a valid forwarding >location for that user." >I would assume it means the proxy recognizes the user (by some previous local >configuration or mechanism) but it does not currently have a binding in its location >service. If this is true, I think this could be an answer to my question. > >King > > >vivek srivastava wrote: > >> If request URI is [EMAIL PROTECTED] >>Now if proxy does not know b.com, it will return 404, >>if proxy knows "a" and b.com but can't foward the message there, it will return 480. >> >>Vivek >> >>On Mon, 26 Apr 2004 Harmeet Singh wrote : >> >>>In my opinion, proxy would return 480 response, if request-URI belongs >>>to the domain for which proxy in question is responsible, but none of >>>contacts (for this AOR URI) are registered at the given time. >>> >>>- Harmeet Singh >>> >>>-----Original Message----- >>> From: [EMAIL PROTECTED] >>>[mailto:[EMAIL PROTECTED] On Behalf Of King Yu >>>Sent: Monday, April 26, 2004 11:37 AM >>>To: [EMAIL PROTECTED] >>>Subject: [Sip-implementors] 404 versus 480 >>> >>> >>>The last two paragraphs in RFC 3261 section 16.5 says: >>> >>>"If the Request-URI indicates a resource at this proxy that does not >>>exist, the proxy MUST return a 404 (Not Found) response. >>>If the target set remains empty after applying all of the above, the >>>proxy MUST return an error response, >>>which SHOULD be the 480 (Temporarily Unavailable) response." >>> >>>My interpretation of this is that if the domain of the Request-URI >>>indicates a domain this proxy is responsible for, but lookup (but >>>location service, and other local policies) failed, then we return 404. >>> >>>My question is, when would we ever encounter a case where we should >>>return 480? If the domain of the Request-URI is external (this proxy is >>> >>>NOT responsible for), we would have forwarded the request to that >>>external domain immediately (section 16.5 paragraph 3). >>> >>>Thanks. >>> >>> >>>King >>> >>>_______________________________________________ >>>Sip-implementors mailing list >>>[EMAIL PROTECTED] >>>http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors >>> >>>_______________________________________________ >>>Sip-implementors mailing list >>>[EMAIL PROTECTED] >>>http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors >>> >> >> >
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