public static bool IsConsolidationTxn(Transaction transaction, ConsolidationTxParameters consolidationParameters, PrevOut[] prevOuts)
{
// The consolidation factor zero disables free consolidation txns
if (consolidationParameters.MinConsolidationFactor == 0)
{
return(false);
}
if (transaction.IsCoinBase)
{
return(false);
}
// The transaction does not decrease #UTXO enough
if (transaction.Inputs.Count < consolidationParameters.MinConsolidationFactor * transaction.Outputs.Count)
{
return(false);
}
long sumScriptPubKeySizesTxInputs = 0;
// combine input with corresponding output it is spending
var pairsInOut = transaction.Inputs.Zip(prevOuts,
(i, o) =>
new
{
input = i,
output = o
});
foreach (var item in pairsInOut)
{
// Transaction has less than minConsInputMaturity confirmations
if (item.output.Confirmations < consolidationParameters.MinConsolidationInputMaturity)
{
return(false);
}
// Spam detection
if (item.input.ScriptSig.Length > consolidationParameters.MaxConsolidationInputScriptSize)
{
return(false);
}
if (!consolidationParameters.AcceptNonStdConsolidationInput && !item.output.IsStandard)
{
return(false);
}
sumScriptPubKeySizesTxInputs += item.output.ScriptPubKeyLength;
}
long sumScriptPubKeySizesTxOutputs = transaction.Outputs.Sum(x => x.ScriptPubKey.Length);
// Size in utxo db does not decrease enough for cons. transaction to be profitable
if (sumScriptPubKeySizesTxInputs < consolidationParameters.MinConsolidationFactor * sumScriptPubKeySizesTxOutputs)
{
return(false);
}
return(true);
}
public BlockChainInfoData(string bestBlockHash, long bestBlockHeight, ConsolidationTxParameters consolidationTxParameters)
{
this.BestBlockHeight = bestBlockHeight;
this.BestBlockHash = bestBlockHash;
this.ConsolidationTxParameters = consolidationTxParameters;
}
