AliSawari

var http = require("http");
var fs = require("fs");
var server = http.createServer().listen(3000);

server.on("request", function(req, res) {
  if (req.method != "POST") return res.end();
  var imageName = "received-" + Date.now() + ".jpg";
  var writeStream = fs.createWriteStream(imageName);

  req.pipe(writeStream);

AliSawari

// including the net module
const net = require('net');

// clients array
let clients = [];

// a nice little logger with a time stamp
// loggin messages for both server and Client
function logger(m){
  let d = new Date().toLocaleString();

AliSawari

// A simple BlockChain example via Nodejs
// this example shows the core functionality of a BlockChain system and how it works
// want to add  more options? here's the GitHub rep: https://github.com/AliSawari/SimpleBlockChain
// THIS EXAMPLE IS INSPIRED BY : youtu.be/zVqczFZr124 

// requiring Hash function
const {createHmac} = require('crypto');

// simplify some functions
function str(val){