OptionalalgorithmThe algorithm (e.g. MD5, SHA-256), if the server named one.
The server nonce.
OptionalopaqueThe opaque value to echo back, if any.
OptionalqopThe quality-of-protection list as sent (e.g. 'auth' or 'auth,auth-int'), if any.
The authentication realm.
A parsed
Digestauthentication challenge from aWWW-Authenticate/Proxy-Authenticateheader.Since
1.0.3