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Amend bumpfee for inputs with overlapping ancestry

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At the end of coin selection reduce the fees by the difference between
the individual bump fee estimates and the collective bump fee estimate.
This commit is contained in:
Murch
2023-09-13 14:10:47 -04:00
parent 2e35e944da
commit f18f9ef4d3
8 changed files with 88 additions and 21 deletions
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10
src/wallet/feebumper.cpp
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@@ -86,13 +86,11 @@ static feebumper::Result CheckFeeRate(const CWallet& wallet, const CMutableTrans
reused_inputs.push_back(txin.prevout);
}
std::map<COutPoint, CAmount> bump_fees = wallet.chain().CalculateIndividualBumpFees(reused_inputs, newFeerate);
CAmount total_bump_fees = 0;
for (auto& [_, bump_fee] : bump_fees) {
total_bump_fees += bump_fee;
std::optional<CAmount> combined_bump_fee = wallet.chain().CalculateCombinedBumpFee(reused_inputs, newFeerate);
if (!combined_bump_fee.has_value()) {
errors.push_back(strprintf(Untranslated("Failed to calculate bump fees, because unconfirmed UTXOs depend on enormous cluster of unconfirmed transactions.")));
}
CAmount new_total_fee = newFeerate.GetFee(maxTxSize) + total_bump_fees;
CAmount new_total_fee = newFeerate.GetFee(maxTxSize) + combined_bump_fee.value();
CFeeRate incrementalRelayFee = std::max(wallet.chain().relayIncrementalFee(), CFeeRate(WALLET_INCREMENTAL_RELAY_FEE));