public void Initialize()
{
var accountDac = new AccountDac();
var accountIds = accountDac.SelectAll().Select(a => a.Id).ToArray();
UtxoSet.Initialize(accountIds);
foreach (var id in accountIds)
{
this.RefreshUtxoSet(id);
}
}
/// <summary>
/// 是否可花费
/// </summary>
/// <param name="utxoSet"></param>
/// <param name="lastHeight"></param>
/// <param name="localTime"></param>
/// <returns></returns>
public static bool IsSpentable(this UtxoSet utxoSet, long lastHeight, long localTime)
{
if (utxoSet.IsSpent())
{
return(false);
}
var confirmcount = lastHeight - utxoSet.BlockHeight;
if (TransactionPoolDac.Default.UtxoHasSpent(utxoSet.TransactionHash, utxoSet.Index))
{
return(false);
}
return((confirmcount >= 100 && utxoSet.IsCoinbase) || (confirmcount >= 6 && !utxoSet.IsCoinbase && utxoSet.Locktime <= localTime));
}
private bool ValidateDoubleSpend()
{
var inputs = Bitcoin.TransactionPool
.SelectMany(x => x.InputList)
.Distinct();
foreach (var item in inputs)
{
var utxo = UtxoSet.Where(x => x.TxId == item.TxId && x.vOut == item.VOut);
if (utxo != null && utxo.Count() > 1)
{
return(false);
}
}
return(true);
}
private void CreateUtxo()
{
var utxoMiner = new Utxo("0000000000", 0, rewardMinerCoinbase, AddressMiner);
UtxoSet.Add(utxoMiner);
foreach (var transaction in Bitcoin.TransactionPool.Distinct())
{
foreach (var output in transaction.OutputList)
{
var vOut = transaction.OutputList.IndexOf(output);
var utxo = new Utxo(transaction.TxId, vOut, output.Value, output.Address);
UtxoSet.Add(utxo);
}
}
rewardMinerCoinbase = 0;
}
private void ExcludeUtxo()
{
var inputs = Bitcoin.TransactionPool
.SelectMany(x => x.InputList)
.Distinct();
var utxoList = new List <Utxo>();
foreach (var item in inputs)
{
UtxoSet.RemoveAll(x => x.TxId == item.TxId && x.vOut == item.VOut);
}
//var exclude = UtxoSet.FirstOrDefault(x => x.TxId == "0000000000" && x.Address == AddressMiner);
UtxoSet.RemoveAll(x => x.TxId == "0000000000" && x.Address == AddressMiner);
}
private decimal ReturnSumInputs()
{
var inputs = Bitcoin.TransactionPool
.SelectMany(x => x.InputList)
.Distinct();
decimal sumInputs = 0;
foreach (var item in inputs)
{
var utxo = UtxoSet.FirstOrDefault(x => x.TxId == item.TxId && x.vOut == item.VOut);
if (utxo != null)
{
sumInputs += utxo.Value;
}
}
sumInputs += UtxoSet.Where(x => x.Address == AddressMiner && x.TxId == "0000000000").Sum(x => x.Value);
return(sumInputs);
}
/// <summary>
/// 获取到区块受影响的UTXO信息
/// </summary>
/// <param name="block"></param>
/// <returns></returns>
public static BlockUpdateData GetBlockUpdateData(this BlockMsg block)
{
BlockUpdateData blockUpdateData = new BlockUpdateData();
var coinbase = block.Transactions[0];
foreach (var tx in block.Transactions)
{
foreach (var output in tx.Outputs)
{
UtxoSet utxoSet = new UtxoSet
{
BlockHeight = block.Header.Height,
IsCoinbase = tx.Hash.Equals(coinbase.Hash),
IsSpent = false,
Locktime = tx.Locktime,
DepositTime = tx.DepositTime,
TransactionHash = tx.Hash,
Index = output.Index,
Amount = output.Amount,
BlockHash = block.Header.Hash,
BlockTime = block.Header.Timestamp,
TransactionTime = tx.Timestamp,
LockScript = output.LockScript,
Account = GetAccountByLockScript == null ? null : GetAccountByLockScript(output.LockScript)
};
blockUpdateData.NewUtxoSet.Add(utxoSet);
blockUpdateData.UtxoSetState.Add(new UtxoSetState {
Transaction = tx.Hash, Index = output.Index
});
}
foreach (var input in tx.Inputs)
{
blockUpdateData.SpentUtxoSet.Add($"{input.OutputTransactionHash}_{input.OutputIndex}");
blockUpdateData.UtxoSetState.Add(new UtxoSetState {
Transaction = input.OutputTransactionHash, Index = input.OutputIndex, State = 1
});
}
}
return(blockUpdateData);
}
public void Put(UtxoSet set)
{
Put(new UtxoSet[] { set });
}
public static bool IsSpentInPool(this UtxoSet utxoSet)
{
return(utxoSet.IsSpent || TransactionPoolDac.Default.UtxoHasSpent(utxoSet.TransactionHash, utxoSet.Index));
}
public static bool IsSpent(this UtxoSet utxoSet)
{
return(utxoSet.IsSpent && utxoSet.SpentHeight != 0 && GlobalParameters.LocalHeight >= utxoSet.SpentHeight);
}
/// <summary>
/// 这笔Utxo消费是否已确认
/// </summary>
/// <param name="utxoSet"></param>
/// <param name="lastHeight"></param>
/// <returns></returns>
public static bool IsSpentConfirmed(this UtxoSet utxoSet, long lastHeight)
{
var confirmcount = utxoSet.SpentHeight - lastHeight;
return(confirmcount >= 6);
}
/// <summary>
/// 是否正在等待中
/// </summary>
/// <param name="utxoSet"></param>
/// <param name="lastHeight"></param>
/// <param name="localTime"></param>
/// <returns></returns>
public static bool IsWaiting(this UtxoSet utxoSet, long lastHeight, long localTime)
{
return(!utxoSet.IsSpent() && utxoSet.IsSpentableWithoutPool(lastHeight, localTime));
}
/// <summary>
/// 是否可花费(排除交易池中的数据)
/// </summary>
/// <param name="utxoSet"></param>
/// <param name="lastHeight"></param>
/// <param name="localTime"></param>
/// <returns></returns>
private static bool IsSpentableWithoutPool(this UtxoSet utxoSet, long lastHeight, long localTime)
{
var confirmcount = lastHeight - utxoSet.BlockHeight;
return(!((confirmcount < 100 && utxoSet.IsCoinbase) || (confirmcount < 6 && !utxoSet.IsCoinbase) || utxoSet.Locktime > localTime));
}
/// <summary>
/// 是否已确认
/// </summary>
/// <param name="utxoSet"></param>
/// <param name="lastHeight"></param>
/// <returns></returns>
public static bool IsConfirmed(this UtxoSet utxoSet, long lastHeight)
{
var confirmcount = lastHeight - utxoSet.BlockHeight;
return((confirmcount >= 100 && utxoSet.IsCoinbase) || (confirmcount >= 6 && !utxoSet.IsCoinbase));
}
