// Performs additional transaction verification at the unconfirmed pool level.
// This checks tunable parameters that should prevent the transaction from
// entering the blockchain, but cannot be done at the blockchain level because
// they may be changed.
func VerifyTransaction(bc *coin.Blockchain, t *coin.Transaction, maxSize int,
burnFactor uint64) error {
if t.Size() > maxSize {
return errors.New("Transaction too large")
}
if fee, err := bc.TransactionFee(t); err != nil {
return err
} else if burnFactor != 0 && t.OutputHours()/burnFactor > fee {
return errors.New("Transaction fee minimum not met")
}
return nil
}
// VerifyTransactionFee performs additional transaction verification at the unconfirmed pool level.
// This checks tunable parameters that should prevent the transaction from
// entering the blockchain, but cannot be done at the blockchain level because
// they may be changed.
func VerifyTransactionFee(bc *Blockchain, t *coin.Transaction) error {
fee, err := bc.TransactionFee(t)
if err != nil {
return err
}
//calculate total number of coinhours
var total = t.OutputHours() + fee
//make sure at least half the coin hours are destroyed
if fee < total/BurnFactor {
return errors.New("Transaction coinhour fee minimum not met")
}
return nil
}