GET http://localhost:3000/socket.io/socket.io.js 404 (Not Found) - node.js

Question

I'm trying to stream data to the browser. I'm struggling, however, to connect it to the browser. Here's my html:
<ul class="tweets"></ul>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script src="/socket.io/socket.io.js"></script>
<script>
var socket = io.connect();
jQuery(function ($) {
var tweetList = $('ul.tweets');
socket.on('tweet', function (data) {
tweetList .prepend('<li>' + data.user + ': ' + data.text + '</li>');
});
});
</script>
And here's the relevant parts of my app.js:
var express = require('express')
, twitter = require('ntwitter')
, http = require('http')
, path = require('path');
var app = express();
var io = require('socket.io').listen(app);
app.get('/', function (req, res) { res.sendfile(__dirname + '/index.html'); });
app.listen(app.get('port'), function(){
console.log("Express server listening on port " + app.get('port'));
});
io.sockets.volatile.emit('tweets', {
user: data.user.screen_name,
text: data.text,
geo : geo,
latitude: latitude,
longitude: longitude
});
I installed socket.io 0.9.16 via my packages.json file:
"dependencies": {
"express": "3.2.6",
"jade": "*",
"ntwitter":"0.2.10",
"socket.io":"0.9.x"
}
Can anyone help me out here? Why can't it find the file?
Digging a bit deeper. To test the socket, I put this in the app.js:
var socket = io.listen(app);
And I get the error:
TypeError: Object #<Manager> has no method 'listen'
at Object.<anonymous> (/home/andy/dev/node/mytwittermap/app.js:49:17)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
at startup (node.js:119:16)
at node.js:901:3

Answer 1

Your setup needs to look something like this:
var app = express();
var server = require('http').createServer(app);
var io = require('socket.io').listen(server);
...
server.listen(app.get('port')); // not 'app.listen'!

Answer 2

Can you try this:
var http = require('http');
var app = express();
var server = http.createServer(app);
var io = require('socket.io').listen(server);
I guess, you will have to instantiate the socket.io server.

Answer 3

You need to instantiate the socket.io connection and
You need to use server.listen() and not app.listen()
Try something like this:
// at the top of app.js
var app = express();
var server = require('http').createServer(app);
var io = require('socket.io').listen(server);
// your code
// at the bottom of app.js
server.listen('3000', () => {
console.log('Server listening on Port 3000');
})