server.js

//import { Socket } from 'net';

//Required packages
var app = require('express')();
var http = require('http').Server(app);
var io = require('socket.io')(http);

//Return the bidder page
app.get('/bidder', function (req, res) {
    res.sendFile(__dirname + '/bidder.html');
});

//Return auction page
app.get('/auction', function (req, res) {
    res.send(__dirname + '/auction.html');
});

//Variables
var p_item;
var n_name;
var bids;

//If we have connection....
io.on('connection', function (socket) {

    // CODE HERE
    socket.on("submititem", function(itemdata){

        //Set variables
        p_item = itemdata.item;
        bids = itemdata.bid;
        n_name = itemdata.newname;

        // Make sure we've received the question OK
        console.log("Item submitted: " + JSON.stringify(itemdata));

        //Broadcast data
        socket.broadcast.emit("deliver_bid", itemdata.bid);
        socket.broadcast.emit("deliver_item", itemdata.item);
        socket.broadcast.emit("deliver_name", itemdata.newname);
    });

});

// Start the server
http.listen(3000, function () {
    console.log('listening on *:3000');
});