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handle user defined fee amount better by requiring a fee rate of 1 sat/vb for utxo selectors

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This commit is contained in:
Craig Raw 2021-04-26 14:39:13 +02:00
parent 2cd133bc1c
commit db9617ee10
1 changed files with 5 additions and 0 deletions
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src/main/java/com/sparrowwallet/drongo/wallet/Wallet.java
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@ -465,6 +465,10 @@ public class Wallet {
long totalPaymentAmount = payments.stream().map(Payment::getAmount).mapToLong(v -> v).sum();
long totalUtxoValue = getWalletUtxos().keySet().stream().mapToLong(BlockTransactionHashIndex::getValue).sum();
if(fee != null && feeRate != Transaction.DEFAULT_MIN_RELAY_FEE) {
throw new IllegalArgumentException("Use an input fee rate of 1 sat/vB when using a defined fee amount so UTXO selectors overestimate effective value");
}
long maxSpendableAmt = getMaxSpendable(payments.stream().map(Payment::getAddress).collect(Collectors.toList()), feeRate);
if(maxSpendableAmt < 0) {
throw new InsufficientFundsException("Not enough combined value in all available UTXOs to send a transaction to the provided addresses at this fee rate");
@ -528,6 +532,7 @@ public class Wallet {
//If insufficient fee, increase value required from inputs to include the fee and try again
if(differenceAmt < noChangeFeeRequiredAmt) {
valueRequiredAmt = totalSelectedAmt + 1;
//If we haven't selected all UTXOs yet, don't require more than the max spendable amount
if(valueRequiredAmt > maxSpendableAmt && transaction.getInputs().size() < getWalletUtxos().size()) {
valueRequiredAmt = maxSpendableAmt;
}