private bool AddTransaction(Transaction tx)
{
if (Blockchain.Default == null)
{
return(false);
}
lock (MemoryPool)
{
if (MemoryPool.ContainsKey(tx.Hash))
{
return(false);
}
if (Blockchain.Default.ContainsTransaction(tx.Hash))
{
return(false);
}
if (!tx.Verify(MemoryPool.Values))
{
return(false);
}
AddingTransactionEventArgs args = new AddingTransactionEventArgs(tx);
AddingTransaction?.Invoke(this, args);
if (!args.Cancel)
{
MemoryPool.Add(tx.Hash, tx);
}
return(!args.Cancel);
}
}
private bool AddTransaction(Transaction tx)
{
if (Blockchain.Default == null)
{
return(false);
}
lock (MemoryPool)
{
if (MemoryPool.ContainsKey(tx.Hash))
{
return(false);
}
if (MemoryPool.Values.SelectMany(p => p.GetAllInputs()).Intersect(tx.GetAllInputs()).Count() > 0)
{
return(false);
}
if (Blockchain.Default.ContainsTransaction(tx.Hash))
{
return(false);
}
if (!tx.Verify())
{
return(false);
}
AddingTransactionEventArgs args = new AddingTransactionEventArgs(tx);
AddingTransaction?.Invoke(this, args);
if (!args.Cancel)
{
MemoryPool.Add(tx.Hash, tx);
}
return(!args.Cancel);
}
}
public AddingTxEventArgs CanAddTransaction(Block block, Transaction currentTx, IReadOnlySet <Transaction> transactionsInBlock, IStateProvider stateProvider)
{
AddingTxEventArgs args = new(transactionsInBlock.Count, currentTx, block, transactionsInBlock);
long gasRemaining = block.Header.GasLimit - block.GasUsed;
// No more gas available in block for any transactions,
// the only case we have to really stop
if (GasCostOf.Transaction > gasRemaining)
{
return(args.Set(TxAction.Stop, "Block full"));
}
if (currentTx.SenderAddress is null)
{
return(args.Set(TxAction.Skip, "Null sender"));
}
if (currentTx.GasLimit > gasRemaining)
{
return(args.Set(TxAction.Skip, $"Not enough gas in block, gas limit {currentTx.GasLimit} > {gasRemaining}"));
}
if (transactionsInBlock.Contains(currentTx))
{
return(args.Set(TxAction.Skip, "Transaction already in block"));
}
IReleaseSpec spec = _specProvider.GetSpec(block.Number);
if (stateProvider.IsInvalidContractSender(spec, currentTx.SenderAddress))
{
return(args.Set(TxAction.Skip, $"Sender is contract"));
}
UInt256 expectedNonce = stateProvider.GetNonce(currentTx.SenderAddress);
if (expectedNonce != currentTx.Nonce)
{
return(args.Set(TxAction.Skip, $"Invalid nonce - expected {expectedNonce}"));
}
UInt256 balance = stateProvider.GetBalance(currentTx.SenderAddress);
if (!HasEnoughFounds(currentTx, balance, args, block, spec))
{
return(args);
}
AddingTransaction?.Invoke(this, args);
return(args);
}
