const app = require('express')();
const server = require('http').createServer(app);
const io = require('socket.io')(server);

io.on('connection', socket => {
    console.log(`Client connected with id:  ${socket.id}!`); // A client connects

    socket.on('data', (data) => {
        console.log('Received from client: ', data); // Received data from client
    });
});

server.listen(3000, () => {
    console.log('Server is listening on port 3000!'); // Started server
});