how to use of socket io on a route in nodejs
//Using Express 4, in your app.js file you can use
app.set('socketio', io);
//then in your router you can access it like this
router.post('/getRides', function(req, res, next) {
var io = req.app.get('socketio');
io.to(//socket.id//).emit("message", data);
db.rides.find(function(err, docs) {
res.json(docs);
});
};