For android you have to edit cordova.xml and add access to the socketio host:
<access origin="HOST*"/>
index.html (with socketio example):
<script src="HOST/socket.io/socket.io.js"></script>
<script>
var socket = io.connect('HOST');
socket.on('news', function (data) {
socket.emit('my other event', { my: 'data' });
});
</script>
app.js (server side javascript / basic socketio example):
var io = require('socket.io').listen(80);
io.sockets.on('connection', function (socket) {
socket.emit('news', { hello: 'world' });
socket.on('my other event', function (data) {
console.log(data);
});
});
The HOST you have to replace with hostname of your socket.io server!