From RFC3261:
20.27 Proxy-Authenticate
A Proxy-Authenticate header field value contains an authentication challenge.
The use of this header field is defined in [H14.33]. See Section 22.3 for further details on its usage.
Example:
Proxy-Authenticate: Digest realm="atlanta.com", domain="sip:ss1.carrier.com", qop="auth", nonce="f84f1cec41e6cbe5aea9c8e88d359", opaque="", stale=FALSE, algorithm=MD5
My question revolves around the domain="sip:ss1.carrier.com" field. I notice that SER does not use the option, however I have another proxy that does. I have searched for information about this field, but not able to get the information I need. Why would you use a realm and domain field at the same time? Is 1 preferred to another? Should both be used?
Any help would be great.
PB