On Mon, 2010-02-08 at 18:32 +0900, Couret Tabt wrote: > I have a question about '407 Proxy Authenticate Response' > in RFC3261 below: > > May a UA(ex.Bob as a receiver) send '407 Proxy Authenticdate' Response > as same as a proxy send.
In theory, a UAS must use 401 and a proxy must use 407. But a UAS can behave as if there is a proxy between itself and the rest of the network, and that proxy could send a 407. So in practice, a UAS can send a 407 if it wishes to. In general, there is no effective way for a UAC to determine which element generated a 401/407 response (or any other response), other than optional UAS identification fields (like Server and Contact) that the responder chooses to include in the response. Dale _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
