TIdProxyOnAuthorization is an event type signalled when an HTTP client has selected an authentication class to be used when session or proxy authentication is required for a connection. TIdProxyOnAuthorization is the event type signalled to the
TIdHTTP.OnSelectProxyAuthorization event handler prior to triggering the
TIdHTTP.OnAuthorization event.
AuthenticationClass is the class instance to be used to perform authentication for the mechanisms required in an HTTP request.
AuthInfo is the header values to be be used in the HTTP response that includes the authentication results.