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Merge pull request #7296

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)
0.13
Wladimir J. van der Laan 9 years ago
parent
commit
c49551886a
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GPG Key ID: 74810B012346C9A6
  1. 9
      qa/rpc-tests/fundrawtransaction.py
  2. 2
      qa/rpc-tests/mempool_limit.py
  3. 11
      src/init.cpp
  4. 6
      src/qt/sendcoinsdialog.cpp
  5. 20
      src/wallet/wallet.cpp
  6. 3
      src/wallet/wallet.h

9
qa/rpc-tests/fundrawtransaction.py

@ -30,6 +30,11 @@ class RawTransactionsTest(BitcoinTestFramework): @@ -30,6 +30,11 @@ class RawTransactionsTest(BitcoinTestFramework):
print "Mining blocks..."
min_relay_tx_fee = self.nodes[0].getnetworkinfo()['relayfee']
# This test is not meant to test fee estimation and we'd like
# to be sure all txs are sent at a consistent desired feerate
for node in self.nodes:
node.settxfee(min_relay_tx_fee)
# if the fee's positive delta is higher than this value tests will fail,
# neg. delta always fail the tests.
# The size of the signature of every input may be at most 2 bytes larger
@ -447,6 +452,10 @@ class RawTransactionsTest(BitcoinTestFramework): @@ -447,6 +452,10 @@ class RawTransactionsTest(BitcoinTestFramework):
wait_bitcoinds()
self.nodes = start_nodes(4, self.options.tmpdir)
# This test is not meant to test fee estimation and we'd like
# to be sure all txs are sent at a consistent desired feerate
for node in self.nodes:
node.settxfee(min_relay_tx_fee)
connect_nodes_bi(self.nodes,0,1)
connect_nodes_bi(self.nodes,1,2)

2
qa/rpc-tests/mempool_limit.py

@ -33,7 +33,9 @@ class MempoolLimitTest(BitcoinTestFramework): @@ -33,7 +33,9 @@ class MempoolLimitTest(BitcoinTestFramework):
inputs = [{ "txid" : us0["txid"], "vout" : us0["vout"]}]
outputs = {self.nodes[0].getnewaddress() : 0.0001}
tx = self.nodes[0].createrawtransaction(inputs, outputs)
self.nodes[0].settxfee(self.relayfee) # specifically fund this tx with low fee
txF = self.nodes[0].fundrawtransaction(tx)
self.nodes[0].settxfee(0) # return to automatic fee selection
txFS = self.nodes[0].signrawtransaction(txF['hex'])
txid = self.nodes[0].sendrawtransaction(txFS['hex'])
self.nodes[0].lockunspent(True, [us0])

11
src/init.cpp

@ -393,6 +393,8 @@ std::string HelpMessage(HelpMessageMode mode) @@ -393,6 +393,8 @@ std::string HelpMessage(HelpMessageMode mode)
strUsage += HelpMessageGroup(_("Wallet options:"));
strUsage += HelpMessageOpt("-disablewallet", _("Do not load the wallet and disable wallet RPC calls"));
strUsage += HelpMessageOpt("-keypool=<n>", strprintf(_("Set key pool size to <n> (default: %u)"), DEFAULT_KEYPOOL_SIZE));
strUsage += HelpMessageOpt("-fallbackfee=<amt>", strprintf(_("A fee rate (in %s/kB) that will be used when fee estimation has insufficient data (default: %s)"),
CURRENCY_UNIT, FormatMoney(DEFAULT_FALLBACK_FEE)));
strUsage += HelpMessageOpt("-mintxfee=<amt>", strprintf(_("Fees (in %s/kB) smaller than this are considered zero fee for transaction creation (default: %s)"),
CURRENCY_UNIT, FormatMoney(DEFAULT_TRANSACTION_MINFEE)));
strUsage += HelpMessageOpt("-paytxfee=<amt>", strprintf(_("Fee (in %s/kB) to add to transactions you send (default: %s)"),
@ -959,6 +961,15 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler) @@ -959,6 +961,15 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
else
return InitError(AmountErrMsg("mintxfee", mapArgs["-mintxfee"]));
}
if (mapArgs.count("-fallbackfee"))
{
CAmount nFeePerK = 0;
if (!ParseMoney(mapArgs["-fallbackfee"], nFeePerK))
return InitError(strprintf(_("Invalid amount for -fallbackfee=<amount>: '%s'"), mapArgs["-fallbackfee"]));
if (nFeePerK > nHighTransactionFeeWarning)
InitWarning(_("-fallbackfee is set very high! This is the transaction fee you may pay when fee estimates are not available."));
CWallet::fallbackFee = CFeeRate(nFeePerK);
}
if (mapArgs.count("-paytxfee"))
{
CAmount nFeePerK = 0;

6
src/qt/sendcoinsdialog.cpp

@ -640,13 +640,15 @@ void SendCoinsDialog::updateSmartFeeLabel() @@ -640,13 +640,15 @@ void SendCoinsDialog::updateSmartFeeLabel()
CFeeRate feeRate = mempool.estimateSmartFee(nBlocksToConfirm, &estimateFoundAtBlocks);
if (feeRate <= CFeeRate(0)) // not enough data => minfee
{
ui->labelSmartFee->setText(BitcoinUnits::formatWithUnit(model->getOptionsModel()->getDisplayUnit(), CWallet::GetRequiredFee(1000)) + "/kB");
ui->labelSmartFee->setText(BitcoinUnits::formatWithUnit(model->getOptionsModel()->getDisplayUnit(),
std::max(CWallet::fallbackFee.GetFeePerK(), CWallet::GetRequiredFee(1000))) + "/kB");
ui->labelSmartFee2->show(); // (Smart fee not initialized yet. This usually takes a few blocks...)
ui->labelFeeEstimation->setText("");
}
else
{
ui->labelSmartFee->setText(BitcoinUnits::formatWithUnit(model->getOptionsModel()->getDisplayUnit(), feeRate.GetFeePerK()) + "/kB");
ui->labelSmartFee->setText(BitcoinUnits::formatWithUnit(model->getOptionsModel()->getDisplayUnit(),
std::max(feeRate.GetFeePerK(), CWallet::GetRequiredFee(1000))) + "/kB");
ui->labelSmartFee2->hide();
ui->labelFeeEstimation->setText(tr("Estimated to begin confirmation within %n block(s).", "", estimateFoundAtBlocks));
}

20
src/wallet/wallet.cpp

@ -47,6 +47,12 @@ bool fSendFreeTransactions = DEFAULT_SEND_FREE_TRANSACTIONS; @@ -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 @@ -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));
}
// prevent user from paying a non-sense fee (like 1 satoshi): 0 < fee < minRelayFee
if (nFeeNeeded < ::minRelayTxFee.GetFee(nTxBytes))
nFeeNeeded = ::minRelayTxFee.GetFee(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 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

@ -41,6 +41,8 @@ static const unsigned int DEFAULT_KEYPOOL_SIZE = 100; @@ -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: @@ -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

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