text: app.factory('indexFactory', [() => {
  	const connectSocket = (url, options) => {
  		return new Promise((resolve, reject) => {
  			const socket = io.connect(url, options);
  
  			socket.on('connect', () => {
  				resolve(socket);
  			});
  
  			socket.on('connect_error', () => {
  				reject(new Error('connect_error'));
  			});
  		});
  	};
  
  	return {
  		connectSocket
  	}
  }]);