public function onAfterRoute()
    {
        $app = JFactory::getApplication();

        $username = $app->input->server->get('PHP_AUTH_USER', null, 'string');
        $password = $app->input->server->get('PHP_AUTH_PW', null, 'string');

        if ($username && $password)
        {
            if (!$this->_login($username, $password, $app)) {
                throw new Exception('Login failed', 401);
            }
        }
    }