Returns the issuer identifier of the authorization server at a base URL.
A pinned oauth2.issuer wins, with an http:// pin on an HTTPS port upgraded; otherwise the base itself.
oauth2.issuer
http://
the authorization server's base URL
the issuer identifier
Returns the issuer identifier of the authorization server at a base URL.
A pinned
oauth2.issuerwins, with anhttp://pin on an HTTPS port upgraded; otherwise the base itself.