socket.io.js not found

For some reason my node server cannot serve the route /socket.io/socket.io.js, I always get a 404 error.
I tried compiling different node versions (current is 0.6.13 which also runs on server, where it actually works).
From the app.js I get info: socket.io started and no error when trying to call the socket.io.js.

I try it from localhost and port 8000 and I use the express framework

This is the code from app.js:

var express = require('express')
  , app = require('express').createServer()
  , io = require('socket.io').listen(app, { log: true });

app.listen(8000);

app.configure(function() {
    app.use(express.static(__dirname + '/public'));
    app.use(express.errorHandler({ dumpExceptions: true, showStack: true }));
});

io.sockets.on('connection', function (socket) {
   // all other stuff here

Answers:

Answer

Please check your Express version. Express recently is updated to 3.0alpha which API was changed. If 3.0 you can change your code to something likes this:

var express = require('express')
  , http = require('http');

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

...

server.listen(8000);

Same issue with connect: https://github.com/senchalabs/connect/issues/500#issuecomment-4620773

Answer

Using with the Express 3 web framework: (from socket.io)

> Express 3 requires that you instantiate a http.Server to attach socket.io to first:

meaning - (1) you must create a server instance:

var app = express();
var http = require('http').createServer(app);

(2) couple it with the socket.io:

var io = require('socket.io');
io.listen(http);

and ONLY THEN - (3) make the server listen:

http.listen(8080);

make sure you keep this order!

Answer

After installing node 0.8.1 I had the same problem. I just deleted the node_modules map in my project folder and reinstalled express/socket.io. After that it worked fine again with the code in your question.

Answer

Maybe this could help you, on my Ubuntu 11.10 I haven't properly set NODE_PATH variable, If you are on linux/mac try add line below to your .bashrc/.zshrc file.

export NODE_PATH=/usr/lib/node_modules:$NODE_PATH
Answer

Install Socket.io inside your repository:

npm install socket.io --save 

After, config the server:

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

   server.listen(app.get('80')); // not 'app.listen'

And inside your archive HTML/EJS or another you want, add:

<script src="/socket.io/socket.io.js"></script>

Check if works with Console (Chrome/ Mozilla, etc).

In my example I use Chrome (Ctrl + shift + I):

enter image description here

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