Browser can't find socket.io.js for client:
<script src="/socket.io/socket.io.js"></script>
When server is created without handler:
var app = require('http').createServer(handler)
, io = require('socket.io').listen(app)
, fs = require('fs');
app.listen(80);
//without this part:
/*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);
});
});
I don't need and don't want handler function because everything I generate in PHP. And sometimes use client application functions for another file than index.html/php
So how to make browser can find socket.io.js?
Include this on your client side !
<script type="text/javascript" src="/socket.io/socket.io.js"></script>
var io = io.connect();
If you don't need access to http module functionality use this way:
var io = require('socket.io').listen(80);
io.sockets.on('connection', function (socket) {
socket.emit('news', { hello: 'world' });
socket.on('my other event', function (data) {
console.log(data);
});
});
I've wrote a demo app that you could have a look at if you don't want to loose to much time getting started with socket.io and Express 3.
To have websockets working your client js needs to be delivered from a webserver. This is one of those many browser limitation. The easiest setup is to have a node server that provide both the client side Js and the WebSockets. Using easier the http module of Express (a bit overkill but super practical if you want to build something more than just a test app).
Other wise you need to have your client side js pointing to the right place. For example if you run your socket.io server of port 8080 and you deliver your static client side on port 8000 (using python -m SimpleHTTPServer for example or port 80 using a regular apache).
<script src="http://localhost:8080/socket.io/socket.io.js"></script>