node.js - 如何拒绝某些用户加入socket.io中的同一房间？

Question

现在我正在使用express4和socket.io 0.9构建在线聊天室。问题是我不希望同一用户在浏览器(或其他浏览器)中打开另一个选项卡时加入同一个房间。我可以获取用户 session (要访问这些房间，用户必须登录，当他们登录时，“uid”将设置到 session 中)。

Answer 1

在@Jujuleder的帮助下，我找到了解决我的问题的方法。

服务器:

var socketio = require('socket.io'),
    cookieParser = require('cookie-parser')('YOUR-SERECT-KEY'),
    session = require('express-session'),
    RedisStore = require('connect-redis')(session),
    redis = require("redis"),
    client = redis.createClient(6379, "127.0.0.1"),
    store = new RedisStore;

module.exports.listen = function(app){
   var io = socketio.listen(app);
   var pubRoom = new PublicRoom(io);
   pubRoom.listen();
   return io
};

function PublicRoom(io){
   this._baseUrl = '/room/public/';
   this.publicRoom = io.of(this._baseUrl);
}

PublicRoom.prototype.listen = function(){
   this.publicRoom.authorization(function(handshakeData, callback){

   function cookieParserWrapper (handshakeData, next) {
       cookieParser(handshakeData,{}, next);
   }

   cookieParserWrapper(handshakeData,function(){});

   var sid = handshakeData.signedCookies.sid;
   //get the UID from redis
   store.get(sid,function(err,data){
      if(err){
            console.log(err);
       }else{
            handshakeData.uid = data.uid;//set UID into handshake
            callback(null, true);
        }
   });
});

this.publicRoom.on('connection', function(socket){
    socket.on('authReq',function(room,user){
        socket.myID = user;
        var uid = socket.handshake.uid; // We can get the UID here.
        var onlineUsers = self.publicRoom.clients(room);//get users in this room
        if(onlineUsers.length === 0){
            socket.to(room).emit('authRes',true);// Tell the client you can Join
            socket.auth = true;
        }else{
            for(var i= 0,l=onlineUsers.length;i<l;i++){
                if(onlineUsers[i].myID===uid){
                    socket.auth = false;
                    socket.to(room).emit('authRes',false);
                    // Tell the client you can't Join
                }else{
                    socket.auth = true;
                    socket.to(room).emit('authRes',true);// Tell the client you can Join
                }
            }
        }
    });
 });
}

客户:

socket.on('connect', function() {
    socket.emit('authReq',roomID,userID);
});