public void Receive(TcpClient client)
{
while (listening)
{
BlockChain newChain = JsonConvert.DeserializeObject <BlockChain>(Chat.Recieve(client));
if (newChain.IsValid() && newChain.Chain.Count > Program.Blockchain.Chain.Count)
{
List <Transaction> newTransactions = new List <Transaction>();
newTransactions.AddRange(newChain.PendingTransactions);
newTransactions.AddRange(Program.Blockchain.PendingTransactions);
newChain.PendingTransactions = newTransactions;
newChain.PrintExtends(Program.Blockchain);
Program.Blockchain = newChain;
}
}
}
public static void SetMinersTrue(string ip, long blockID)
{
int minerIndex = FindIndexOfGivenInput(ip);
var keyValuePair = GetBlockInProcessingBlock(blockID);
int blockIndex = keyValuePair.Key;
Block block = keyValuePair.Value;
if (block == null)
{
return;
}
if (miners[minerIndex][blockIndex].Key.BlockID == block.BlockID)
{
miners[minerIndex].RemoveAt(blockIndex);
miners[minerIndex].Add(new KeyValuePair <Block, bool>(block, true));
BlockChain.TryToAddChain(block);
}
}
public static void UpdateProcessingBlockList(Block block)
{
int myIndex = FindIndexOfGivenInput(TCP.myIP);
var keyValuePair = GetBlockInProcessingBlock(block.BlockID);
int blockIndex = keyValuePair.Key;
Block processingBlock = keyValuePair.Value;
if (processingBlock == null)
{
return;
}
if (miners[myIndex][blockIndex].Key.Time.CompareTo(block.Time) >= 0)
{
miners[myIndex].RemoveAt(blockIndex);
processingBlock.Time = block.Time;
processingBlock.Nonce = block.Nonce;
processingBlock.Hash = block.Hash;
miners[myIndex].Add(new KeyValuePair <Block, bool>(processingBlock, true));
}
BlockChain.TryToAddChain(processingBlock);
}
public void FinishHandshake(TcpClient client)
{
string key = ToString(client.Client.RemoteEndPoint);
if (!_wsDict.ContainsKey(key))
{
string recieved = Chat.Recieve(client);
if (recieved == "HISERVER")
{
Chat.PrintLog("Recieved handshake request!");
Chat.Send(client, "HICLIENT");
}
recieved = Chat.Recieve(client);
BlockChain newChain = JsonConvert.DeserializeObject <BlockChain>(recieved);
if (newChain.IsValid() && newChain.Chain.Count > Program.Blockchain.Chain.Count)
{
List <Transaction> newTransactions = new List <Transaction>();
newTransactions.AddRange(newChain.PendingTransactions);
newTransactions.AddRange(Program.Blockchain.PendingTransactions);
newChain.PendingTransactions = newTransactions;
newChain.PrintExtends(Program.Blockchain);
Program.Blockchain = newChain;
Chat.Send(client, "GOODCHAIN");
}
else
{
Chat.Send(client, JsonConvert.SerializeObject(Program.Blockchain));
}
_wsDict.Add(key, client);
Task.Run(() => Receive(client));
}
}
public void InitiateHandshake(string address, int port)
{
if (!_wsDict.ContainsKey(address + port))
{
Chat.PrintLog("Connecting to node...");
TcpClient client = new TcpClient(address, port);
Chat.PrintLog("Sending handshake to node...");
Chat.Send(client, "HISERVER");
if (Chat.Recieve(client) != "HICLIENT")
{
Chat.PrintLog("Unable to recieve handshake from node.");
return;
}
Chat.PrintLog("Recieved handshake from node!");
Chat.Send(client, JsonConvert.SerializeObject(Program.Blockchain));
string retval = Chat.Recieve(client);
if (retval != "GOODCHAIN")
{
BlockChain newChain = JsonConvert.DeserializeObject <BlockChain>(retval);
if (newChain.IsValid() && newChain.Chain.Count > Program.Blockchain.Chain.Count)
{
List <Transaction> newTransactions = new List <Transaction>();
newTransactions.AddRange(newChain.PendingTransactions);
newTransactions.AddRange(Program.Blockchain.PendingTransactions);
newChain.PendingTransactions = newTransactions;
Program.Blockchain = newChain;
}
}
_wsDict.Add(ToString(client.Client.RemoteEndPoint), client);
Task.Run(() => Receive(client));
}
}
public Bloque GetUltimoBloque()
{
return(BlockChain.ElementAt(GetI() - 1));
}
public Bloque GetBloqueIndice(int p_ind)
{
return(BlockChain.ElementAt(p_ind));
}
private BlockChain()
{
GetChain();
blockChainInstance = this;
}
public static void MainMethod()
{
string title = @"
_____ _ _____ _ _
/ ____| | | / ____| | (_)
| (___ _ _ _ __ _ __ | |_ _| | | |__ __ _ _ _ __
\___ \| | | | '_ \| '_ \| | | | | | | '_ \ / _` | | '_ \
____) | |_| | |_) | |_) | | |_| | |____| | | | (_| | | | | |
|_____/ \__,_| .__/| .__/|_|\__, |\_____|_| |_|\__,_|_|_| |_|
| | | | __/ |
|_| |_| |___/
";
Console.WriteLine(title);
Console.WriteLine(
"Command List: \n" +
"connect [ip] --> Connect to website and join other miners. [ip] is webserver's ip.\n" +
"print [id] --> Print block which given id\n" +
"exit --> Leave the network\n" +
"quit --> exit application\n");
while (true)
{
string command = Console.ReadLine();
command = command.ToLower();
if (command.StartsWith("connect"))
{
if (command.Length > 8)
{
command = command.Substring(8);
}
else
{
Console.WriteLine("Please enter the ip");
continue;
}
if (!command.Contains("."))
{
Console.WriteLine("Please enter the ip");
continue;
}
TCP.WebServerIp = command;
Miners.ConnectToNetwork();
continue;
}
if (command.StartsWith("print"))
{
command = command.Substring(6);
Console.WriteLine(BlockChain.GetBlock(int.Parse(command)).ToString());
break;
}
if (command.StartsWith("chain"))
{
Console.WriteLine("\n--------BLOCKCHAIN--------");
BlockChain.GetChain().ForEach(b => Console.WriteLine(b.ToString()));
Console.WriteLine("--------BLOCKCHAIN--------\n");
}
if (command.StartsWith("get"))
{
if (BlockChain.GetChain().Count == 1)
{
TCP.Send(Miners.minerIPs[0], "getChain");
}
else
{
Console.WriteLine("Already have chain");
}
}
if (command.StartsWith("read"))
{
string path = command.Substring(5);
string st = File.ReadAllText(path);
object ret = TCP.JsonDeserialize(st);
var obj = TCP.Cast(ret, new { list = new List <Block>() });
BlockChain.SetChain(obj.list);
TCP.SendWebServer("addMeNow");
}
if (command.StartsWith("write"))
{
string path = command.Substring(6);
string st = TCP.JsonSerialize(new { list = BlockChain.GetChain() });
File.WriteAllText(path, st);
}
if (command.Equals("exit"))
{
Console.WriteLine("Leaving network...\nPlease press a key");
Console.ReadKey();
Console.Clear();
MainMethod();
break;
}
if (command.Equals("quit"))
{
Environment.Exit(0);
}
}
}
private static void Interpreter(string message, string ip)
{
message = message.Replace("SupplyChain", "Blockchain");
// received miners list
if (message.StartsWith("minersList"))
{
message = message.Substring(10);
object ret = JsonDeserialize(message);
var obj = Cast(ret, new { list = new List <string>() });
Miners.minerIPs = obj.list;
Console.WriteLine("Current miner count: " + Miners.minerIPs.Count);
for (int a = 0; a < Miners.minerIPs.Count; a++)
{
Miners.miners.Add(new List <KeyValuePair <Block, bool> >());
}
if (Miners.minerIPs.Count == 0)
{
BlockChain.GetChain();
SendWebServer("addMeNow");
}
return;
}
// received a new block to add
if (message.StartsWith("addBlock"))
{
Data data = (Data)JsonDeserialize(message.Substring(8));
BlockChain.ReceiveNewBlock(data);
return;
}
if (message.StartsWith("checkNonce"))
{
message = message.Substring(10);
string[] checkNonceArray = message.Split('$');
Miners.SetMyMinerTrue(DateTime.Parse(checkNonceArray[0]), long.Parse(checkNonceArray[1]), Int32.Parse(checkNonceArray[2]), ip);
return;
}
if (message.StartsWith("nonceIsTrue"))
{
message = message.Substring(11);
Miners.SetMinersTrue(ip, long.Parse(message));
return;
}
if (message.StartsWith("getChain"))
{
Send(ip, "receiveChain" + JsonSerialize(new { chain = BlockChain.GetChain() }));
return;
}
if (message.StartsWith("receiveChain"))
{
object ret = JsonDeserialize(message.Substring(12));
var obj = Cast(ret, new { chain = new List <Block>() });
BlockChain.ReceiveChain(obj.chain);
return;
}
if (message.StartsWith("newMinerJoined"))
{
message = message.Substring(14);
Miners.minerIPs.Add(message);
Miners.miners.Add(new List <KeyValuePair <Block, bool> >());
if (message == myIP)
{
Console.WriteLine("\n-------Connected to network!-------\n");
}
else
{
Console.WriteLine("New miner joined to network -> " + message);
}
Console.WriteLine("Current miner count: " + Miners.minerIPs.Count);
return;
}
if (message.StartsWith("verify"))
{
message = message.Substring(6);
Product product = BlockChain.GetProductInfo(long.Parse(message));
SendWebServer("verifyReturn" + JsonSerialize(product));
return;
}
if (message.StartsWith("block"))
{
message = message.Substring(5);
Block takenBlock = (Block)JsonDeserialize(message);
// wait until the block is inserted into chain
bool wait = true;
while (wait)
{
List <Block> chain = BlockChain.GetChain();
try {
wait = !chain.Exists(b => b.BlockID.Equals(takenBlock.BlockID));
}
catch { }
}
Block currentBlock = BlockChain.GetBlock(takenBlock.BlockID);
// change time earlier if taken one is earlier
if (currentBlock.Time.CompareTo(takenBlock.Time) > 0)
{
currentBlock.Time = takenBlock.Time;
currentBlock.Nonce = takenBlock.Nonce;
currentBlock.Hash = currentBlock.CalculateHash();
}
// change smaller nonce if the found dates equal
if (currentBlock.Time.CompareTo(takenBlock.Time) == 0)
{
currentBlock.Nonce = Math.Min(takenBlock.Nonce, currentBlock.Nonce);
}
}
}
