/// <summary>
/// Verify that a transaction is fully signed, have enough fees, and follow the Standard and Miner Transaction Policy rules
/// </summary>
/// <param name="tx">The transaction to check</param>
/// <param name="expectedFees">The expected fees (more or less 10%)</param>
/// <param name="errors">Detected errors</param>
/// <returns>True if no error</returns>
public bool Verify(Transaction tx, Money expectedFees, out TransactionPolicyError[] errors)
{
if(tx == null)
throw new ArgumentNullException("tx");
var coins = tx.Inputs.Select(i => FindCoin(i.PrevOut)).Where(c => c != null).ToArray();
List<TransactionPolicyError> exceptions = new List<TransactionPolicyError>();
var policyErrors = MinerTransactionPolicy.Instance.Check(tx, coins);
exceptions.AddRange(policyErrors);
policyErrors = StandardTransactionPolicy.Check(tx, coins);
exceptions.AddRange(policyErrors);
if(expectedFees != null)
{
var fees = tx.GetFee(coins);
if(fees != null)
{
Money margin = Money.Zero;
if(DustPrevention)
margin = GetDust() * 2;
if(!fees.Almost(expectedFees, margin))
exceptions.Add(new NotEnoughFundsPolicyError("Fees different than expected", expectedFees - fees));
}
}
errors = exceptions.ToArray();
return errors.Length == 0;
}
/// <summary>
/// Verify that a transaction is fully signed and have enough fees
/// </summary>
/// <param name="tx">The transaction to check</param>
/// <param name="expectedFeeRate">The expected fee rate</param>
/// <param name="errors">Detected errors</param>
/// <returns>True if no error</returns>
public bool Verify(Transaction tx, FeeRate expectedFeeRate, out TransactionPolicyError[] errors)
{
if(tx == null)
throw new ArgumentNullException("tx");
return Verify(tx, expectedFeeRate == null ? null : expectedFeeRate.GetFee(tx), out errors);
}
/// <summary>
/// Verify that a transaction is fully signed and have enough fees
/// </summary>
/// <param name="tx">The transaction to check</param>
/// <param name="errors">Detected errors</param>
/// <returns>True if no error</returns>
public bool Verify(Transaction tx, out TransactionPolicyError[] errors)
{
return Verify(tx, null as Money, out errors);
}