I\'m serving my page through localhost (XAMPP, Apache), and on my friend\'s physical server I run a node.js server that is used for communication with the page (a game).
2 Options. Per the documentation, you can do a JavaScript src pointing at your node server:
Or you can include it manually, grabbing it from the Git repo at https://github.com/LearnBoost/socket.io-client/blob/master/dist/socket.io.js