//ver1
public static Transaction NewTransaction(string from, string to, int amount, UTXOSet set)
{
var inputs = new List <TxInput>();
var outputs = new List <TxOutput>();
var walletBank = new WalletBank();
var wallet = walletBank.FindWallet(from);
var pubKeyHash = wallet.PublicKeyHash;
var spendableOutputs = set.FindSpendableOutputs(pubKeyHash, amount);
var account = spendableOutputs.Item2;
var validOutputs = spendableOutputs.Item1;
if (account < amount)
{
Console.WriteLine("Insufficient funds");
return(null);
}
else
{
foreach (var output in validOutputs.Keys)
{
var txId = (output);
if (validOutputs.ContainsKey(txId))
{
foreach (var @out in validOutputs[txId])
{
var input = new TxInput()
{
Id = HexadecimalEncoding.FromHexStringToByte(txId), Out = @out, Signature = null, PubKey = wallet.PublicKey
};
inputs.Add(input);
}
}
}
outputs.Add(TxOutput.NewTxOutput(amount, to));
if (account > amount)
{
outputs.Add(TxOutput.NewTxOutput(account - amount, from));
}
}
var tx = new Transaction()
{
Id = null,
Inputs = inputs,
Outputs = outputs,
TimeStamp = DateTime.Now
};
tx.Id = tx.CalculateHash();
set.Chain.SignTransaction(tx, wallet.PrivateKey);
return(tx);
}
/// <summary>
/// 1. Clear Database,
/// 2. Finds UTXO
/// 3. Add to DB
/// </summary>
public void ReIndex()
{
DeleteKeys();
var UTXO = Chain.FindUtxo();
var index = 0;
foreach (var outputs in UTXO)
{
var key = HexadecimalEncoding.FromHexStringToByte(outputs.Key);
Chain.TransactionDB.Put(key, outputs.Value.Serialize());
index++;
}
}
public bool Parse(Byte[] data)
{
//parse the message from "incoming data packet"
var messageContent = Encoding.UTF8.GetString(data);
//////////////////////////////////////////////////////////////////////////
//Data validation
XmlDocument xmlDoc = new XmlDocument();
try
{
xmlDoc.LoadXml(messageContent);
}
catch (XmlException ex)
{
System.Diagnostics.Debug.WriteLine("There was an xml parsing error in the received message : " +
ex.Message);
return(false);
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("There was an error in the received message : " + ex.Message);
return(false);
}
MessageType type = MessageType.EmptyMessage;
XmlElement messageElement = xmlDoc.DocumentElement;
if (messageElement.Name == "message")
{
foreach (XmlNode node in messageElement.ChildNodes)
{
if (node.Name == "type")
{
type = (MessageType)Enum.Parse(typeof(MessageType), node.InnerText);
break;
}
}
}
if (type != MessageType.CommandMessage)
{
Console.WriteLine("The supplied data was the wrong message type!");
return(false);
}
foreach (XmlNode node in messageElement.ChildNodes)
{
if (node.Name == "data")
{
this.Data = HexadecimalEncoding.FromHexStringToByte(node.InnerText);
}
else if (node.Name == "command")
{
Enum.TryParse(node.InnerText, out CommandType command);
Command = command;
}
else if (node.Name == "clientdetails")
{
mClient = new ClientDetails();
foreach (XmlNode detailsNode in node.ChildNodes)
{
if (detailsNode.Name == "name")
{
mClient.ClientName = detailsNode.InnerText;
}
else if (detailsNode.Name == "ipaddress")
{
mClient.ClientIPAddress = detailsNode.InnerText;
}
else if (detailsNode.Name == "listenport")
{
mClient.ClientListenPort = int.Parse(detailsNode.InnerText);
}
}
}
}
//////////////////////////////////////////////////////////////////////////
return(true);
}