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-rw-r--r--src/wallet/wallet.cpp67
1 files changed, 38 insertions, 29 deletions
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index f69ae5268c..f010ff0ca1 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -2721,17 +2721,7 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CWalletT
vin.scriptWitness.SetNull();
}
- // Allow to override the default confirmation target over the CoinControl instance
- int currentConfirmationTarget = nTxConfirmTarget;
- if (coin_control.nConfirmTarget > 0)
- currentConfirmationTarget = coin_control.nConfirmTarget;
-
- // Allow to override the default fee estimate mode over the CoinControl instance
- bool conservative_estimate = CalculateEstimateType(coin_control.m_fee_mode, coin_control.signalRbf);
-
- CAmount nFeeNeeded = GetMinimumFee(nBytes, currentConfirmationTarget, ::mempool, ::feeEstimator, &feeCalc, false /* ignoreGlobalPayTxFee */, conservative_estimate);
- if (coin_control.fOverrideFeeRate)
- nFeeNeeded = coin_control.nFeeRate.GetFee(nBytes);
+ CAmount nFeeNeeded = GetMinimumFee(nBytes, coin_control, ::mempool, ::feeEstimator, &feeCalc);
// If we made it here and we aren't even able to meet the relay fee on the next pass, give up
// because we must be at the maximum allowed fee.
@@ -2756,7 +2746,7 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CWalletT
// new inputs. We now know we only need the smaller fee
// (because of reduced tx size) and so we should add a
// change output. Only try this once.
- CAmount fee_needed_for_change = GetMinimumFee(change_prototype_size, currentConfirmationTarget, ::mempool, ::feeEstimator, nullptr, false /* ignoreGlobalPayTxFee */, conservative_estimate);
+ CAmount fee_needed_for_change = GetMinimumFee(change_prototype_size, coin_control, ::mempool, ::feeEstimator, nullptr);
CAmount minimum_value_for_change = GetDustThreshold(change_prototype_txout, ::dustRelayFee);
CAmount max_excess_fee = fee_needed_for_change + minimum_value_for_change;
if (nFeeRet > nFeeNeeded + max_excess_fee && nChangePosInOut == -1 && nSubtractFeeFromAmount == 0 && pick_new_inputs) {
@@ -2932,33 +2922,52 @@ CAmount CWallet::GetRequiredFee(unsigned int nTxBytes)
return std::max(minTxFee.GetFee(nTxBytes), ::minRelayTxFee.GetFee(nTxBytes));
}
-CAmount CWallet::GetMinimumFee(unsigned int nTxBytes, unsigned int nConfirmTarget, const CTxMemPool& pool, const CBlockPolicyEstimator& estimator, FeeCalculation *feeCalc, bool ignoreGlobalPayTxFee, bool conservative_estimate)
+CAmount CWallet::GetMinimumFee(unsigned int nTxBytes, const CCoinControl& coin_control, const CTxMemPool& pool, const CBlockPolicyEstimator& estimator, FeeCalculation *feeCalc)
{
- // payTxFee is the user-set global for desired feerate
- CAmount nFeeNeeded = payTxFee.GetFee(nTxBytes);
- // User didn't set: use -txconfirmtarget to estimate...
- if (nFeeNeeded == 0 || ignoreGlobalPayTxFee) {
- nFeeNeeded = estimator.estimateSmartFee(nConfirmTarget, feeCalc, pool, conservative_estimate).GetFee(nTxBytes);
- // ... unless we don't have enough mempool data for estimatefee, then use fallbackFee
- if (nFeeNeeded == 0) {
- nFeeNeeded = fallbackFee.GetFee(nTxBytes);
+ /* User control of how to calculate fee uses the following parameter precedence:
+ 1. coin_control.m_feerate
+ 2. coin_control.m_confirm_target
+ 3. payTxFee (user-set global variable)
+ 4. nTxConfirmTarget (user-set global variable)
+ The first parameter that is set is used.
+ */
+ CAmount fee_needed;
+ if (coin_control.m_feerate) { // 1.
+ fee_needed = coin_control.m_feerate->GetFee(nTxBytes);
+ if (feeCalc) feeCalc->reason = FeeReason::PAYTXFEE;
+ // Allow to override automatic min/max check over coin control instance
+ if (coin_control.fOverrideFeeRate) return fee_needed;
+ }
+ else if (!coin_control.m_confirm_target && ::payTxFee != CFeeRate(0)) { // 3. TODO: remove magic value of 0 for global payTxFee
+ fee_needed = ::payTxFee.GetFee(nTxBytes);
+ if (feeCalc) feeCalc->reason = FeeReason::PAYTXFEE;
+ }
+ else { // 2. or 4.
+ // We will use smart fee estimation
+ unsigned int target = coin_control.m_confirm_target ? *coin_control.m_confirm_target : ::nTxConfirmTarget;
+ // Allow to override the default fee estimate mode over the CoinControl instance
+ bool conservative_estimate = CalculateEstimateType(coin_control.m_fee_mode, coin_control.signalRbf);
+
+ fee_needed = estimator.estimateSmartFee(target, feeCalc, pool, conservative_estimate).GetFee(nTxBytes);
+ if (fee_needed == 0) {
+ // if we don't have enough data for estimateSmartFee, then use fallbackFee
+ fee_needed = fallbackFee.GetFee(nTxBytes);
if (feeCalc) feeCalc->reason = FeeReason::FALLBACK;
}
- } else {
- if (feeCalc) feeCalc->reason = FeeReason::PAYTXFEE;
}
+
// prevent user from paying a fee below minRelayTxFee or minTxFee
- CAmount requiredFee = GetRequiredFee(nTxBytes);
- if (requiredFee > nFeeNeeded) {
- nFeeNeeded = requiredFee;
+ CAmount required_fee = GetRequiredFee(nTxBytes);
+ if (required_fee > fee_needed) {
+ fee_needed = required_fee;
if (feeCalc) feeCalc->reason = FeeReason::REQUIRED;
}
// But always obey the maximum
- if (nFeeNeeded > maxTxFee) {
- nFeeNeeded = maxTxFee;
+ if (fee_needed > maxTxFee) {
+ fee_needed = maxTxFee;
if (feeCalc) feeCalc->reason = FeeReason::MAXTXFEE;
}
- return nFeeNeeded;
+ return fee_needed;
}