node.jsexpresssocket.io

Can't get socket.io.js

I'm actually working on a little project, where i'm supposed to recreate a drawing multiplayer game with node.js, mongoDB, socket.io and canvas.

The drawer is working like a charm, and the server seems to work well too. I got my register/login/sessions and database up and working, the only problem is socket.io. When an user is joining the game room, he can see the drawer and tools, but no connection. Why ? The browser can't find socket.io.js.

What I did :

I verified if it was installed, it is with npm install socket.io. I checked if the server was starting it when turning the server on : Got "socket.io started" in my console. I checked my HTML code, here it is : 

<script type="text/javascript" src="/socket.io/socket.io.js"></script>

According to the billions of tutorials/dev sites/help subjects, this is supposed to work. But it's not. When opening the console of my browser, I got this :

X GET http://localhost:1337/socket.io/socket.io.js NOT FOUND.

I don't know where is the problem, I can't figure this out and it's giving me a huge headache.. So I'm here.

Thanks in advance for helping ! :)

Solution

  • Given the code in your comment, you're not using the correct variable for initializing socket.io.

    Try this:

    var express = require('express');
var app     = express();
var server  = app.listen(1337);
var io      = require('socket.io').listen(server);
...

    So instead of having socket.io 'listen' on the Express app instance, it should listen to what app.listen(...) returns (which happens to be an http.Server instance).