Dear folks,
There is a description below about 407 in RFC3261:
21.4.8 407 Proxy Authentication Required
This code is similar to 401 (Unauthorized), but indicates that the
client MUST first authenticate itself with the proxy. SIP access
authentication is explained in Sections 26 and 22.3.
This status code can be used for applications where access to the
communication channel (for example, a telephony gateway) rather than
the callee requires authentication.
Especially, what does the description below mean?
...but indicates that the
client MUST first authenticate itself with the proxy.
I think below:
Even if a UA want to authenticate another UA,
it MUST NOT have the authentication using 407.
Additionally, even proxy MUST NOT use 407 mechanism
to authenticate the UA AT SECOND TIME(maybe
in the dialog).
Is my thinking correct?
If you know it, please let me know.
Thanks,
Tabt
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