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-rwxr-xr-xqa/rpc-tests/fundrawtransaction.py9
-rwxr-xr-xqa/rpc-tests/mempool_limit.py2
-rw-r--r--src/init.cpp11
-rw-r--r--src/qt/sendcoinsdialog.cpp6
-rw-r--r--src/wallet/wallet.cpp20
-rw-r--r--src/wallet/wallet.h3
6 files changed, 41 insertions, 10 deletions
diff --git a/qa/rpc-tests/fundrawtransaction.py b/qa/rpc-tests/fundrawtransaction.py
index d6493dbb8a..dda9166151 100755
--- a/qa/rpc-tests/fundrawtransaction.py
+++ b/qa/rpc-tests/fundrawtransaction.py
@@ -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):
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)
diff --git a/qa/rpc-tests/mempool_limit.py b/qa/rpc-tests/mempool_limit.py
index 3ba17ac4f1..a8cf6360ee 100755
--- a/qa/rpc-tests/mempool_limit.py
+++ b/qa/rpc-tests/mempool_limit.py
@@ -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])
diff --git a/src/init.cpp b/src/init.cpp
index 220df5ebf7..374e756abd 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -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)
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;
diff --git a/src/qt/sendcoinsdialog.cpp b/src/qt/sendcoinsdialog.cpp
index 31c9028c4b..c834c3b564 100644
--- a/src/qt/sendcoinsdialog.cpp
+++ b/src/qt/sendcoinsdialog.cpp
@@ -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));
}
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index 1904361bae..6b2ebebba7 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -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));
- }
- // 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;
diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
index a9d0c3f604..9bbd52f14c 100644
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -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
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-10 08:31:57 +0000