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Merge #10589: More economical fee estimates for RBF and RPC options to control

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f135923 Add RPC options for RBF, confirmation target, and conservative fee estimation. (Alex Morcos)
f0bf33d Change default fee estimation mode. (Alex Morcos)
e0738e3 remove default argument from estimateSmartFee (Alex Morcos)
d507c30 Introduce a fee estimate mode. (Alex Morcos)
cfaef69 remove default argument from GetMinimumFee (Alex Morcos)

Tree-SHA512: 49c3a49a6893790a7e8b4e93a48f123dd5307af26c2017800683b76b4df8fc904ba73402917878676242c7440e3e04288d0c1ff3c2c907418724efc03cedab50
This commit is contained in:
Wladimir J. van der Laan
2017-07-11 11:57:24 +02:00
parent 379aed0e53 f135923ee2
commit 104f5f21dc
13 changed files with 157 additions and 28 deletions
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21
src/wallet/wallet.cpp
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@@ -2724,7 +2724,10 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CWalletT
if (coinControl && coinControl->nConfirmTarget > 0)
currentConfirmationTarget = coinControl->nConfirmTarget;
CAmount nFeeNeeded = GetMinimumFee(nBytes, currentConfirmationTarget, ::mempool, ::feeEstimator, &feeCalc);
// Allow to override the default fee estimate mode over the CoinControl instance
bool conservative_estimate = CalculateEstimateType(coinControl ? coinControl->m_fee_mode : FeeEstimateMode::UNSET, rbf);
CAmount nFeeNeeded = GetMinimumFee(nBytes, currentConfirmationTarget, ::mempool, ::feeEstimator, &feeCalc, false /* ignoreGlobalPayTxFee */, conservative_estimate);
if (coinControl && coinControl->fOverrideFeeRate)
nFeeNeeded = coinControl->nFeeRate.GetFee(nBytes);
@@ -2905,13 +2908,13 @@ 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)
CAmount CWallet::GetMinimumFee(unsigned int nTxBytes, unsigned int nConfirmTarget, const CTxMemPool& pool, const CBlockPolicyEstimator& estimator, FeeCalculation *feeCalc, bool ignoreGlobalPayTxFee, bool conservative_estimate)
{
// 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, true).GetFee(nTxBytes);
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);
@@ -4154,3 +4157,15 @@ bool CMerkleTx::AcceptToMemoryPool(const CAmount& nAbsurdFee, CValidationState&
{
return ::AcceptToMemoryPool(mempool, state, tx, true, NULL, NULL, false, nAbsurdFee);
}
bool CalculateEstimateType(FeeEstimateMode mode, bool opt_in_rbf) {
switch (mode) {
case FeeEstimateMode::UNSET:
return !opt_in_rbf; // Allow for lower fees if RBF is an option
case FeeEstimateMode::CONSERVATIVE:
return true;
case FeeEstimateMode::ECONOMICAL:
return false;
}
return true;
}