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Merge pull request #7296

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bebe58b SQUASHME: Fix rpc tests that assumed fallback to minRelayTxFee (Alex Morcos)
e420a1b Add sane fallback for fee estimation (Alex Morcos)
995b9f3 Always respect GetRequiredFee for wallet txs (Alex Morcos)
This commit is contained in:
Wladimir J. van der Laan
2016-01-13 11:04:18 +01:00
parent 18ca3fa840 bebe58b748
commit c49551886a
6 changed files with 40 additions and 9 deletions
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18
src/wallet/wallet.cpp
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@@ -47,6 +47,12 @@ bool fSendFreeTransactions = DEFAULT_SEND_FREE_TRANSACTIONS;
* Override with -mintxfee
*/
CFeeRate CWallet::minTxFee = CFeeRate(DEFAULT_TRANSACTION_MINFEE);
/**
* If fee estimation does not have enough data to provide estimates, use this fee instead.
* Has no effect if not using fee estimation
* Override with -fallbackfee
*/
CFeeRate CWallet::fallbackFee = CFeeRate(DEFAULT_FALLBACK_FEE);
/** @defgroup mapWallet
*
@@ -2230,14 +2236,12 @@ CAmount CWallet::GetMinimumFee(unsigned int nTxBytes, unsigned int nConfirmTarge
if (nFeeNeeded == 0) {
int estimateFoundTarget = nConfirmTarget;
nFeeNeeded = pool.estimateSmartFee(nConfirmTarget, &estimateFoundTarget).GetFee(nTxBytes);
// ... unless we don't have enough mempool data for our desired target
// so we make sure we're paying at least minTxFee
if (nFeeNeeded == 0 || (unsigned int)estimateFoundTarget > nConfirmTarget)
nFeeNeeded = std::max(nFeeNeeded, GetRequiredFee(nTxBytes));
// ... unless we don't have enough mempool data for estimatefee, then use fallbackFee
if (nFeeNeeded == 0)
nFeeNeeded = fallbackFee.GetFee(nTxBytes);
}
// prevent user from paying a non-sense fee (like 1 satoshi): 0 < fee < minRelayFee
if (nFeeNeeded < ::minRelayTxFee.GetFee(nTxBytes))
nFeeNeeded = ::minRelayTxFee.GetFee(nTxBytes);
// prevent user from paying a fee below minRelayTxFee or minTxFee
nFeeNeeded = std::max(nFeeNeeded, GetRequiredFee(nTxBytes));
// But always obey the maximum
if (nFeeNeeded > maxTxFee)
nFeeNeeded = maxTxFee;

3
src/wallet/wallet.h
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@@ -41,6 +41,8 @@ static const unsigned int DEFAULT_KEYPOOL_SIZE = 100;
static const CAmount DEFAULT_TRANSACTION_FEE = 0;
//! -paytxfee will warn if called with a higher fee than this amount (in satoshis) per KB
static const CAmount nHighTransactionFeeWarning = 0.01 * COIN;
//! -fallbackfee default
static const CAmount DEFAULT_FALLBACK_FEE = 20000;
//! -mintxfee default
static const CAmount DEFAULT_TRANSACTION_MINFEE = 1000;
//! -maxtxfee default
@@ -745,6 +747,7 @@ public:
bool AddAccountingEntry(const CAccountingEntry&, CWalletDB & pwalletdb);
static CFeeRate minTxFee;
static CFeeRate fallbackFee;
/**
* Estimate the minimum fee considering user set parameters
* and the required fee