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Node.js + Socket IO + Apache + PHP remove port from url?

I have a few questions regarding using an IO socket with PHP, etc. I am new to nodejs / socket io, so I know very little, I just started using it in the last few days, and I get to the point where I will implement this on my website (at the moment I just had small examples tests).

Question: Currently, I have to add a port to my local host in order to view it and make it work, it is obvious that I cannot have this when it is a live website, and I also can not do this when I use php pages (just doing examples with html) If I use port 4000 for my io server socket, I have to go to: localhost: 4000, however I need to be able to go to: localhost: 8888 / mysitefolder (8888 port for my MAMP, for php and all) I saw in questions where people solved this, but I could not get it to work for myself.

Here is my code:

chat.js

 var app = require('express').createServer(), 
      io = require('socket.io').listen(app);

app.listen(4000);


var users = [];

app.get('/', function (req, res) {
res.sendfile(__dirname + '/index.html');
});

io.sockets.on('connection', function (socket) {

socket.emit('connected');

 socket.on('userID', function (userID) {
users.push(userID);
});  


socket.on('message', function (message) {
socket.broadcast.emit('message-response', { data: message});
});

});

index.html

<title>Testing</title>
<script src="/socket.io/socket.io.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script>

function mktime(){
  var newDate = new Date;
  return newDate.getTime();
  }

  function appendMessage(data)
   {
  $("body").append(data+"<br />");  
   }

  var socket = io.connect('http://localhost:4000');
    socket.on('connected', function () {

   //select id from database in real environment
   socket.emit("userID", mktime());

    });



     socket.on('message-response', function (message) {

     appendMessage(message.data);   

});


    $(document).ready(function(){
      $('#input').keypress(function(event) {
        if (event.keyCode != 13) return;
          var msg = $("#input").val();

             if (msg) {


       socket.emit('message', msg );
       appendMessage(msg);

        $("#input").val('').focus();
      }
    });
    });



    </script>

    <body>
    <input type="text" id="input"><br>
    </body>
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1 answer

, , URL- ? ?

socket.io 0.8.7 . ,

var socket = io.connect();
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