How to create multiple Nodejs socket io server-client?

I am new to Nodejs and Socket.io, and this is first time when I am creating any chat application, so pardon me if I am asking some silly question.

In my web I have to kind of chat services, one is Live debate which is kind of chat room, and another one is private messaging like Facebook Messenger.

I have created both, in private messenger before showing the message I am checking the conversation Id, it's working quite appropriately. Live debate is also working appropriately.

But there is a issue, any message sent in private messenger displays in live debate window also. So I change the Server.js file for messenger and also changed the listening port, now the listening port for live debate is 3000 and for messenger is 8050, but still Live debate receiving the messenger messages.

Am I doing this in wrong way? Is there any other way to run two chat applications ?

I am using this server code

var app = require('express')();
var server = require('http').Server(app);
var io = require('socket.io')(server);
var redis = require('redis');

server.listen(3000);
io.on('connection', function (socket) {

  console.log("client connected");
  var redisClient = redis.createClient();
  redisClient.subscribe('message');

  redisClient.on("message", function(channel, data) {
    console.log("mew message add in queue "+ data+ " channel");
    socket.emit(channel, data);
  });

  socket.on('disconnect', function() {
    redisClient.quit();
  });

});

via vinita