socket.io - How do I point to my node.js server within my PHP app? -

i have php application, adding real time capabilities using node.js , socket.io

while experienced php node.js , finding myself going round in circles.

i have installed both node.js , socket.io. have created /usr/local/lib/app.js containing following example code socket.io site:

var app = require('http').createserver(handler)   , io = require('socket.io').listen(app)   , fs = require('fs')  app.listen(3000);  function handler (req, res) {   fs.readfile(__dirname + '/index.html',   function (err, data) {     if (err) {       res.writehead(500);       return res.end('error loading index.html');     }      res.writehead(200);     res.end(data);   }); }  io.sockets.on('connection', function (socket) {   socket.emit('news', { hello: 'world' });   socket.on('my other event', function (data) {     console.log(data);   }); }); 

when run node /usr/local/lib/app.js info - socket.io started far appears work correctly.

however next step add script client connect socket.io server upon load.

within php app adding following:

<script src="http://xx.xx.xx.xx:3000/socket.io/socket.io.js"></script>     <script>         var socket = io.connect('http://localhost');         socket.on('news', function (data) {             console.log(data);             socket.emit('my other event', { my: 'data' });         });     </script> 

with sites ip address in places of xx's. request socket.io.js file returns 404 error.

i not grasping something. can help.