if (err.code == 'EADDRINUSE' && (joola.config.get('webserver') || options.webserver)) {
        joola.logger.warn('[--webserver] joola HTTP server server error: ' + (typeof(err) === 'object' ? err.message : err));
        //fireof an immediate callback with the error
        return callback(err);
      } else if (err.code == 'EADDRINUSE') {