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-rw-r--r--src/interfaces/wallet.cpp9
-rw-r--r--src/wallet/coincontrol.h2
-rw-r--r--src/wallet/feebumper.cpp155
-rw-r--r--src/wallet/feebumper.h13
-rw-r--r--src/wallet/rpcwallet.cpp15
-rw-r--r--src/wallet/wallet.cpp2
6 files changed, 153 insertions, 43 deletions
diff --git a/src/interfaces/wallet.cpp b/src/interfaces/wallet.cpp
index f98a49f9b1..ed73a71354 100644
--- a/src/interfaces/wallet.cpp
+++ b/src/interfaces/wallet.cpp
@@ -269,8 +269,13 @@ public:
CAmount& new_fee,
CMutableTransaction& mtx) override
{
- return feebumper::CreateTransaction(m_wallet.get(), txid, coin_control, total_fee, errors, old_fee, new_fee, mtx) ==
- feebumper::Result::OK;
+ if (total_fee > 0) {
+ return feebumper::CreateTotalBumpTransaction(m_wallet.get(), txid, coin_control, total_fee, errors, old_fee, new_fee, mtx) ==
+ feebumper::Result::OK;
+ } else {
+ return feebumper::CreateRateBumpTransaction(m_wallet.get(), txid, coin_control, errors, old_fee, new_fee, mtx) ==
+ feebumper::Result::OK;
+ }
}
bool signBumpTransaction(CMutableTransaction& mtx) override { return feebumper::SignTransaction(m_wallet.get(), mtx); }
bool commitBumpTransaction(const uint256& txid,
diff --git a/src/wallet/coincontrol.h b/src/wallet/coincontrol.h
index 48a924abfb..9257b272bc 100644
--- a/src/wallet/coincontrol.h
+++ b/src/wallet/coincontrol.h
@@ -36,6 +36,8 @@ public:
bool m_avoid_partial_spends;
//! Fee estimation mode to control arguments to estimateSmartFee
FeeEstimateMode m_fee_mode;
+ //! Minimum chain depth value for coin availability
+ int m_min_depth{0};
CCoinControl()
{
diff --git a/src/wallet/feebumper.cpp b/src/wallet/feebumper.cpp
index b547ea21d9..4ec9dca420 100644
--- a/src/wallet/feebumper.cpp
+++ b/src/wallet/feebumper.cpp
@@ -75,9 +75,11 @@ bool TransactionCanBeBumped(const CWallet* wallet, const uint256& txid)
return res == feebumper::Result::OK;
}
-Result CreateTransaction(const CWallet* wallet, const uint256& txid, const CCoinControl& coin_control, CAmount total_fee, std::vector<std::string>& errors,
- CAmount& old_fee, CAmount& new_fee, CMutableTransaction& mtx)
+Result CreateTotalBumpTransaction(const CWallet* wallet, const uint256& txid, const CCoinControl& coin_control, CAmount total_fee, std::vector<std::string>& errors,
+ CAmount& old_fee, CAmount& new_fee, CMutableTransaction& mtx)
{
+ new_fee = total_fee;
+
auto locked_chain = wallet->chain().lock();
LOCK(wallet->cs_wallet);
errors.clear();
@@ -121,7 +123,6 @@ Result CreateTransaction(const CWallet* wallet, const uint256& txid, const CCoin
// calculate the old fee and fee-rate
old_fee = wtx.GetDebit(ISMINE_SPENDABLE) - wtx.tx->GetValueOut();
CFeeRate nOldFeeRate(old_fee, txSize);
- CFeeRate nNewFeeRate;
// The wallet uses a conservative WALLET_INCREMENTAL_RELAY_FEE value to
// future proof against changes to network wide policy for incremental relay
// fee that our node may not be aware of.
@@ -131,34 +132,17 @@ Result CreateTransaction(const CWallet* wallet, const uint256& txid, const CCoin
walletIncrementalRelayFee = nodeIncrementalRelayFee;
}
- if (total_fee > 0) {
- CAmount minTotalFee = nOldFeeRate.GetFee(maxNewTxSize) + nodeIncrementalRelayFee.GetFee(maxNewTxSize);
- if (total_fee < minTotalFee) {
- errors.push_back(strprintf("Insufficient totalFee, must be at least %s (oldFee %s + incrementalFee %s)",
- FormatMoney(minTotalFee), FormatMoney(nOldFeeRate.GetFee(maxNewTxSize)), FormatMoney(nodeIncrementalRelayFee.GetFee(maxNewTxSize))));
- return Result::INVALID_PARAMETER;
- }
- CAmount requiredFee = GetRequiredFee(*wallet, maxNewTxSize);
- if (total_fee < requiredFee) {
- errors.push_back(strprintf("Insufficient totalFee (cannot be less than required fee %s)",
- FormatMoney(requiredFee)));
- return Result::INVALID_PARAMETER;
- }
- new_fee = total_fee;
- nNewFeeRate = CFeeRate(total_fee, maxNewTxSize);
- } else {
- new_fee = GetMinimumFee(*wallet, maxNewTxSize, coin_control, nullptr /* FeeCalculation */);
- nNewFeeRate = CFeeRate(new_fee, maxNewTxSize);
-
- // New fee rate must be at least old rate + minimum incremental relay rate
- // walletIncrementalRelayFee.GetFeePerK() should be exact, because it's initialized
- // in that unit (fee per kb).
- // However, nOldFeeRate is a calculated value from the tx fee/size, so
- // add 1 satoshi to the result, because it may have been rounded down.
- if (nNewFeeRate.GetFeePerK() < nOldFeeRate.GetFeePerK() + 1 + walletIncrementalRelayFee.GetFeePerK()) {
- nNewFeeRate = CFeeRate(nOldFeeRate.GetFeePerK() + 1 + walletIncrementalRelayFee.GetFeePerK());
- new_fee = nNewFeeRate.GetFee(maxNewTxSize);
- }
+ CAmount minTotalFee = nOldFeeRate.GetFee(maxNewTxSize) + nodeIncrementalRelayFee.GetFee(maxNewTxSize);
+ if (total_fee < minTotalFee) {
+ errors.push_back(strprintf("Insufficient totalFee, must be at least %s (oldFee %s + incrementalFee %s)",
+ FormatMoney(minTotalFee), FormatMoney(nOldFeeRate.GetFee(maxNewTxSize)), FormatMoney(nodeIncrementalRelayFee.GetFee(maxNewTxSize))));
+ return Result::INVALID_PARAMETER;
+ }
+ CAmount requiredFee = GetRequiredFee(*wallet, maxNewTxSize);
+ if (total_fee < requiredFee) {
+ errors.push_back(strprintf("Insufficient totalFee (cannot be less than required fee %s)",
+ FormatMoney(requiredFee)));
+ return Result::INVALID_PARAMETER;
}
// Check that in all cases the new fee doesn't violate maxTxFee
@@ -175,14 +159,14 @@ Result CreateTransaction(const CWallet* wallet, const uint256& txid, const CCoin
// in a rare situation where the mempool minimum fee increased significantly since the fee estimation just a
// moment earlier. In this case, we report an error to the user, who may use total_fee to make an adjustment.
CFeeRate minMempoolFeeRate = wallet->chain().mempoolMinFee();
+ CFeeRate nNewFeeRate = CFeeRate(total_fee, maxNewTxSize);
if (nNewFeeRate.GetFeePerK() < minMempoolFeeRate.GetFeePerK()) {
errors.push_back(strprintf(
"New fee rate (%s) is lower than the minimum fee rate (%s) to get into the mempool -- "
- "the totalFee value should be at least %s or the settxfee value should be at least %s to add transaction",
+ "the totalFee value should be at least %s to add transaction",
FormatMoney(nNewFeeRate.GetFeePerK()),
FormatMoney(minMempoolFeeRate.GetFeePerK()),
- FormatMoney(minMempoolFeeRate.GetFee(maxNewTxSize)),
- FormatMoney(minMempoolFeeRate.GetFeePerK())));
+ FormatMoney(minMempoolFeeRate.GetFee(maxNewTxSize))));
return Result::WALLET_ERROR;
}
@@ -212,6 +196,109 @@ Result CreateTransaction(const CWallet* wallet, const uint256& txid, const CCoin
}
}
+ return Result::OK;
+}
+
+
+Result CreateRateBumpTransaction(CWallet* wallet, const uint256& txid, const CCoinControl& coin_control, std::vector<std::string>& errors,
+ CAmount& old_fee, CAmount& new_fee, CMutableTransaction& mtx)
+{
+ // We are going to modify coin control later, copy to re-use
+ CCoinControl new_coin_control(coin_control);
+
+ auto locked_chain = wallet->chain().lock();
+ LOCK(wallet->cs_wallet);
+ errors.clear();
+ auto it = wallet->mapWallet.find(txid);
+ if (it == wallet->mapWallet.end()) {
+ errors.push_back("Invalid or non-wallet transaction id");
+ return Result::INVALID_ADDRESS_OR_KEY;
+ }
+ const CWalletTx& wtx = it->second;
+
+ Result result = PreconditionChecks(*locked_chain, wallet, wtx, errors);
+ if (result != Result::OK) {
+ return result;
+ }
+
+ // Fill in recipients(and preserve a single change key if there is one)
+ std::vector<CRecipient> recipients;
+ for (const auto& output : wtx.tx->vout) {
+ if (!wallet->IsChange(output)) {
+ CRecipient recipient = {output.scriptPubKey, output.nValue, false};
+ recipients.push_back(recipient);
+ } else {
+ CTxDestination change_dest;
+ ExtractDestination(output.scriptPubKey, change_dest);
+ new_coin_control.destChange = change_dest;
+ }
+ }
+
+ // Get the fee rate of the original transaction. This is calculated from
+ // the tx fee/vsize, so it may have been rounded down. Add 1 satoshi to the
+ // result.
+ old_fee = wtx.GetDebit(ISMINE_SPENDABLE) - wtx.tx->GetValueOut();
+ int64_t txSize = GetVirtualTransactionSize(*(wtx.tx));
+ // Feerate of thing we are bumping
+ CFeeRate feerate(old_fee, txSize);
+ feerate += CFeeRate(1);
+
+ // The node has a configurable incremental relay fee. Increment the fee by
+ // the minimum of that and the wallet's conservative
+ // WALLET_INCREMENTAL_RELAY_FEE value to future proof against changes to
+ // network wide policy for incremental relay fee that our node may not be
+ // aware of. This ensures we're over the over the required relay fee rate
+ // (BIP 125 rule 4). The replacement tx will be at least as large as the
+ // original tx, so the total fee will be greater (BIP 125 rule 3)
+ CFeeRate node_incremental_relay_fee = wallet->chain().relayIncrementalFee();
+ CFeeRate wallet_incremental_relay_fee = CFeeRate(WALLET_INCREMENTAL_RELAY_FEE);
+ feerate += std::max(node_incremental_relay_fee, wallet_incremental_relay_fee);
+
+ // Fee rate must also be at least the wallet's GetMinimumFeeRate
+ CFeeRate min_feerate(GetMinimumFeeRate(*wallet, new_coin_control, /* feeCalc */ nullptr));
+
+ // Set the required fee rate for the replacement transaction in coin control.
+ new_coin_control.m_feerate = std::max(feerate, min_feerate);
+
+ // Fill in required inputs we are double-spending(all of them)
+ // N.B.: bip125 doesn't require all the inputs in the replaced transaction to be
+ // used in the replacement transaction, but it's very important for wallets to make
+ // sure that happens. If not, it would be possible to bump a transaction A twice to
+ // A2 and A3 where A2 and A3 don't conflict (or alternatively bump A to A2 and A2
+ // to A3 where A and A3 don't conflict). If both later get confirmed then the sender
+ // has accidentally double paid.
+ for (const auto& inputs : wtx.tx->vin) {
+ new_coin_control.Select(COutPoint(inputs.prevout));
+ }
+ new_coin_control.fAllowOtherInputs = true;
+
+ // We cannot source new unconfirmed inputs(bip125 rule 2)
+ new_coin_control.m_min_depth = 1;
+
+ CTransactionRef tx_new = MakeTransactionRef();
+ CReserveKey reservekey(wallet);
+ CAmount fee_ret;
+ int change_pos_in_out = -1; // No requested location for change
+ std::string fail_reason;
+ if (!wallet->CreateTransaction(*locked_chain, recipients, tx_new, reservekey, fee_ret, change_pos_in_out, fail_reason, new_coin_control, false)) {
+ errors.push_back("Unable to create transaction: " + fail_reason);
+ return Result::WALLET_ERROR;
+ }
+
+ // If change key hasn't been ReturnKey'ed by this point, we take it out of keypool
+ reservekey.KeepKey();
+
+ // Write back new fee if successful
+ new_fee = fee_ret;
+
+ // Write back transaction
+ mtx = CMutableTransaction(*tx_new);
+ // Mark new tx not replaceable, if requested.
+ if (!coin_control.m_signal_bip125_rbf.get_value_or(wallet->m_signal_rbf)) {
+ for (auto& input : mtx.vin) {
+ if (input.nSequence < 0xfffffffe) input.nSequence = 0xfffffffe;
+ }
+ }
return Result::OK;
}
diff --git a/src/wallet/feebumper.h b/src/wallet/feebumper.h
index a1eb5d0e0d..f9cbfc5f68 100644
--- a/src/wallet/feebumper.h
+++ b/src/wallet/feebumper.h
@@ -28,8 +28,8 @@ enum class Result
//! Return whether transaction can be bumped.
bool TransactionCanBeBumped(const CWallet* wallet, const uint256& txid);
-//! Create bumpfee transaction.
-Result CreateTransaction(const CWallet* wallet,
+//! Create bumpfee transaction based on total amount.
+Result CreateTotalBumpTransaction(const CWallet* wallet,
const uint256& txid,
const CCoinControl& coin_control,
CAmount total_fee,
@@ -38,6 +38,15 @@ Result CreateTransaction(const CWallet* wallet,
CAmount& new_fee,
CMutableTransaction& mtx);
+//! Create bumpfee transaction based on feerate estimates.
+Result CreateRateBumpTransaction(CWallet* wallet,
+ const uint256& txid,
+ const CCoinControl& coin_control,
+ std::vector<std::string>& errors,
+ CAmount& old_fee,
+ CAmount& new_fee,
+ CMutableTransaction& mtx);
+
//! Sign the new transaction,
//! @return false if the tx couldn't be found or if it was
//! impossible to create the signature(s)
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index cb6f7637ad..c0c9345bd7 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -3167,9 +3167,9 @@ static UniValue bumpfee(const JSONRPCRequest& request)
RPCHelpMan{"bumpfee",
"\nBumps the fee of an opt-in-RBF transaction T, replacing it with a new transaction B.\n"
"An opt-in RBF transaction with the given txid must be in the wallet.\n"
- "The command will pay the additional fee by decreasing (or perhaps removing) its change output.\n"
- "If the change output is not big enough to cover the increased fee, the command will currently fail\n"
- "instead of adding new inputs to compensate. (A future implementation could improve this.)\n"
+ "The command will pay the additional fee by reducing change outputs or adding inputs when necessary. It may add a new change output if one does not already exist.\n"
+ "If `totalFee` is given, adding inputs is not supported, so there must be a single change output that is big enough or it will fail.\n"
+ "All inputs in the original transaction will be included in the replacement transaction.\n"
"The command will fail if the wallet or mempool contains a transaction that spends one of T's outputs.\n"
"By default, the new fee will be calculated automatically using estimatesmartfee.\n"
"The user can specify a confirmation target for estimatesmartfee.\n"
@@ -3266,7 +3266,14 @@ static UniValue bumpfee(const JSONRPCRequest& request)
CAmount old_fee;
CAmount new_fee;
CMutableTransaction mtx;
- feebumper::Result res = feebumper::CreateTransaction(pwallet, hash, coin_control, totalFee, errors, old_fee, new_fee, mtx);
+ feebumper::Result res;
+ if (totalFee > 0) {
+ // Targeting total fee bump. Requires a change output of sufficient size.
+ res = feebumper::CreateTotalBumpTransaction(pwallet, hash, coin_control, totalFee, errors, old_fee, new_fee, mtx);
+ } else {
+ // Targeting feerate bump.
+ res = feebumper::CreateRateBumpTransaction(pwallet, hash, coin_control, errors, old_fee, new_fee, mtx);
+ }
if (res != feebumper::Result::OK) {
switch(res) {
case feebumper::Result::INVALID_ADDRESS_OR_KEY:
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index 9ee6329f8c..98ba489729 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -2736,7 +2736,7 @@ bool CWallet::CreateTransaction(interfaces::Chain::Lock& locked_chain, const std
LOCK(cs_wallet);
{
std::vector<COutput> vAvailableCoins;
- AvailableCoins(*locked_chain, vAvailableCoins, true, &coin_control);
+ AvailableCoins(*locked_chain, vAvailableCoins, true, &coin_control, 1, MAX_MONEY, MAX_MONEY, 0, coin_control.m_min_depth);
CoinSelectionParams coin_selection_params; // Parameters for coin selection, init with dummy
// Create change script that will be used if we need change
generated by cgit v1.2.3 (git 2.26.2) at 2024-10-31 17:20:56 +0000