socket.io用于简单的聊天应用程序

Question

我正在制作一个简单的聊天应用程序，其中有房间和用户加入房间并聊天。我没有任何身份验证系统，因此用户是随机的。我发送我在mongodb存储的房间ID，供用户进行加入或离开房间。我的问题是，如果我在一个浏览器中更改房间，其他浏览器中的房间chages。 我打开的两个浏览器都反映了相同的变化。我想我错了，有人可以帮我解决这个问题。

   var myApp = angular.module('myApp', []);
myApp.factory('socket', function(){
    return io.connect('http://localhost:3000');
});
myApp.controller('controller', function($scope, $http, $timeout, socket){
    $scope.rooms = [];
    $scope.messages = [];
    $scope.name;
    $scope.roomId ;
    socket.emit('get Rooms', {});
    socket.on('got rooms', function(data) {
        $scope.rooms = data.rooms;
        $scope.$digest();
    });
   $scope.addRoom = function() {
       socket.emit('add Rooms', {roomName : $scope.roomName});
   };
   $scope.changeRoom = function(id) {
       console.log(id);
       socket.emit('change Room',  $scope.roomId, id);

       socket.on('room changed', function(data) {
           $scope.roomId = data._id;

           socket.emit('sent Msg', $scope.roomId);
           socket.on('get Msg', function(data) {
               $scope.messages = data;
               $scope.$digest();
           });

       });
   };
// Adding Users name for first time
    $scope.addName = function(name) {
     $scope.name = name;
        socket.emit('user joined', name);
        socket.on('default group', function(data) {
           $scope.roomId = data._id;

            socket.emit('sent Msg', $scope.roomId);
            socket.on('get Msg', function(data) {
                $scope.messages = data;
                $scope.$digest();
            });
        })
   };
    $scope.sendMessage = function(msg) {
       socket.emit('send msg', msg, $scope.name,  $scope.roomId);
        socket.on('get Msg', function(data) {
            $scope.$digest();
        });
   };



});

我的nodeJs代码。

    io.sockets.on('connection',function(socket){
    var roomsNow =[];
    var users = [];
    socket.on('get Rooms', function(data){
        Room.findAllRooms(function(err, doc){
            if(err)
            res.sendStatus(500);
            else if(doc){
                _.each(doc, function(data){
                    roomsNow.push(data)
                });
                io.sockets.emit('got rooms', {rooms: roomsNow});
            }
        });
    });
  socket.on('change Room', function(oldRoom, newRoom){
        socket.leave(oldRoom);
        socket.join(newRoom);
        io.sockets.emit('room changed', newRoom);

    });