amir-ashy

using System;
using System.Collections.Generic;

namespace Blockchain.Model
{
    public class Block
    {
        public long Index { get; set; }
        public DateTime TimeStamp { get; set; }
        public string Hash { get; set; }

amir-ashy

namespace Blockchain.Model
{
    public class Transaction
    {

        public Transaction() { }
        public Transaction(string from, string to, int amount)
        {
            this.From = from;
            this.To = to;

amir-ashy

using Blockchain.Model;
using System.Collections.Generic;
using System.Linq;

namespace Blockchain
{
    public class TransactionPool
    {
        private List<Transaction> rawTransactionList;

amir-ashy

public List<Block> Blockchain { get; private set; }

amir-ashy

public static string CalculateHash(string rawData)
{
    // Create a SHA256   
    using (SHA256 sha256Hash = SHA256.Create())
    {
        // ComputeHash - returns byte array  
        byte[] bytes = sha256Hash.ComputeHash(Encoding.UTF8.GetBytes(rawData));

        // Convert byte array to a string   
        StringBuilder builder = new StringBuilder();

amir-ashy

private string FindMerkleRootHash(IList<Transaction> transactionList)
{
    var transactionStrList = transactionList.Select(tran => CalculateHash(CalculateHash(tran.From + tran.To + tran.Amount))).ToList();
    return BuildMerkleRootHash(transactionStrList);
}

private string BuildMerkleRootHash(IList<string> merkelLeaves)
{
    if (merkelLeaves == null || !merkelLeaves.Any())
        return string.Empty;

amir-ashy

private void GenerateBlock()
{
        var lastBlock = Blockchain.LastOrDefault();
        var block = new Block()
        {
                TimeStamp = DateTime.Now,
                Nounce = 0,
                TransactionList = TransactionPool.TakeAll(),
                Index = (lastBlock?.Index + 1 ?? 0),
                PrevHash = lastBlock?.Hash ?? string.Empty

amir-ashy

public void Start()
{
    cancellationToken = new CancellationTokenSource();
    Task.Run(() => DoGenerateBlock(), cancellationToken.Token);
    Console.WriteLine("Mining has started");
}
public void Stop()
{
    cancellationToken.Cancel();
    Console.WriteLine("Mining has stopped");

amir-ashy

namespace Blockchain
{
    public class EmbedServer
    {
        private WebServer server;
        private string url;
        public EmbedServer(string port)
        {
            url = $"http://localhost:{port}/";
            server = CreateWebServer(url);