private void HandleUnauthorized(HttpWebResponse response, WebException ex)
{
string authenticationHeader = response.Headers["WWW-Authenticate"];
if (!string.IsNullOrEmpty(authenticationHeader))
{
int pos = authenticationHeader.IndexOf(' ');
string scheme = authenticationHeader.Substring(0, pos);
string parameters = authenticationHeader.Substring(pos + 1);
IAuthorizationHandler handler = Session.AuthorizationDispatcher.Get(scheme);
if (handler != null && handler.HandleAuthorizationRequest(new AuthorizationContext(Session, response, scheme, parameters)))
{
return;
}
}
throw new NotAuthorizedException(response, ex);
}