Socket in AngularJS

'use strict';

angular.module('myApp')

  .controller('SearchCtrl', function ($scope, socket) {
    $scope.results = [];

    $scope.doSearch = function() {
      socket.on('send', function () {
        this.results.push('Socket response!');
      });
    };
  })
;

angular.module('myApp').factory('socket', function ($rootScope, socketFactory) {

  var socket = socketFactory();

  return {
    on: function (eventName, callback) {
      socket.on(eventName, function () {
        var args = arguments;
        $rootScope.$apply(function () {
          callback.apply(socket, args);
        });
      });
    },
    emit: function (eventName, data, callback) {
      socket.emit(eventName, data, function () {
        var args = arguments;
        $rootScope.$apply(function () {
          if (callback) {
            callback.apply(socket, args);
          }
        });
      });
    }
  };
});