socket.io.js not found on client

Question

This question has been asked previously but haven\'t found any solution in prior replies.

Socket.IO gives me two problems:

1. server side gave this error - ER

Answer 1

The problem here is that you're telling Socket.IO to listen on a server that does not yet exist, causing an EACCES and therefore not serving the client file. This is what you're doing:

// the HTTP server doesn't exist yet
var io = require('socket.io').listen(server);
var server = http.createServer();

And if you saw in your server-side error console, you get this:

info: socket.io started
warn: error raised: Error: listen EACCES

To fix this, move your listen function to after the server is created:

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

Once Socket.IO listens properly, it will automatically serve the client file to /socket.io/socket.io.js. You don't need to find it or serve it manually.

Answer 2

The client file that you need is located inside the node_modules folder here:

node_modules/socket.io/node_modules/socket.io-client/dist/socket.io.js

Socket.io should serve this file though so you don't need to copy it somewhere else. For example if you are running your socket.io server on:

http://localhost:5000

Then the script will be served from:

http://localhost:5000/socket.io/socket.io.js

If you are consuming socket.io from another application or another port the relative URL in your code example won't work. You'll want to include the client-script manually or try including the client node module (if consumed by node app).

You can view the client repository here for more info: https://github.com/LearnBoost/socket.io-client