Merge pull request #4465

d88af56 Fee fixes (Cozz Lovan)

4 files changed, 24 insertions, 10 deletions

diff --git a/src/core.cpp b/src/core.cpp
index 47f3b2a015..b56994ecf3 100644
--- a/src/core.cpp
+++ b/src/core.cpp
@@ -82,7 +82,12 @@ CFeeRate::CFeeRate(int64_t nFeePaid, size_t nSize)
 
 int64_t CFeeRate::GetFee(size_t nSize) const
 {
-    return nSatoshisPerK*nSize / 1000;
+    int64_t nFee = nSatoshisPerK*nSize / 1000;
+
+    if (nFee == 0 && nSatoshisPerK > 0)
+        nFee = nSatoshisPerK;
+
+    return nFee;
 }
 
 std::string CFeeRate::ToString() const
diff --git a/src/init.cpp b/src/init.cpp
index 880ccaca1d..f9e568a207 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -253,7 +253,8 @@ std::string HelpMessage(HelpMessageMode mode)
 #ifdef ENABLE_WALLET
     strUsage += "\n" + _("Wallet options:") + "\n";
     strUsage += "  -disablewallet         " + _("Do not load the wallet and disable wallet RPC calls") + "\n";
-    strUsage += "  -mintxfee=<amt>        " + strprintf(_("Fees (in BTC/Kb) smaller than this are considered zero fee for transaction creation (default: %s)"), FormatMoney(CWallet::minTxFee.GetFeePerK())) + "\n";
+    if (GetBoolArg("-help-debug", false))
+        strUsage += "  -mintxfee=<amt>        " + strprintf(_("Fees (in BTC/Kb) smaller than this are considered zero fee for transaction creation (default: %s)"), FormatMoney(CWallet::minTxFee.GetFeePerK())) + "\n";
     strUsage += "  -paytxfee=<amt>        " + strprintf(_("Fee (in BTC/kB) to add to transactions you send (default: %s)"), FormatMoney(payTxFee.GetFeePerK())) + "\n";
     strUsage += "  -rescan                " + _("Rescan the block chain for missing wallet transactions") + " " + _("on startup") + "\n";
     strUsage += "  -respendnotify=<cmd>   " + _("Execute command when a network tx respends wallet tx input (%s=respend TxID, %t=wallet TxID)") + "\n";
diff --git a/src/qt/coincontroldialog.cpp b/src/qt/coincontroldialog.cpp
index c73cf416a8..b4ddda3eaa 100644
--- a/src/qt/coincontroldialog.cpp
+++ b/src/qt/coincontroldialog.cpp
@@ -419,6 +419,8 @@ QString CoinControlDialog::getPriorityLabel(const CTxMemPool& pool, double dPrio
     }
     // Note: if mempool hasn't accumulated enough history (estimatePriority
     // returns -1) we're conservative and classify as "lowest"
+    if (mempool.estimatePriority(nTxConfirmTarget) <= 0 && AllowFree(dPriority))
+        return ">=" + tr("medium");
     return tr("lowest");
 }
 
@@ -523,15 +525,21 @@ void CoinControlDialog::updateLabels(WalletModel *model, QDialog* dialog)
         dPriority = dPriorityInputs / (nBytes - nBytesInputs + (nQuantityUncompressed * 29)); // 29 = 180 - 151 (uncompressed public keys are over the limit. max 151 bytes of the input are ignored for priority)
         sPriorityLabel = CoinControlDialog::getPriorityLabel(mempool, dPriority);
 
+        // Voluntary Fee
+        nPayFee = payTxFee.GetFee(max((unsigned int)1000, nBytes));
+
         // Min Fee
-        nPayFee = CWallet::GetMinimumFee(nBytes, nTxConfirmTarget, mempool);
+        if (nPayFee == 0)
+        {
+            nPayFee = CWallet::GetMinimumFee(nBytes, nTxConfirmTarget, mempool);
 
-        double dPriorityNeeded = mempool.estimatePriority(nTxConfirmTarget);
-        if (dPriorityNeeded <= 0) // Not enough mempool history: never send free
-            dPriorityNeeded = std::numeric_limits<double>::max();
+            double dPriorityNeeded = mempool.estimatePriority(nTxConfirmTarget);
+            if (dPriorityNeeded <= 0 && !AllowFree(dPriority)) // not enough mempool history: never send free
+                dPriorityNeeded = std::numeric_limits<double>::max();
 
-        if (nBytes <= MAX_FREE_TRANSACTION_CREATE_SIZE && dPriority >= dPriorityNeeded)
-            nPayFee = 0;
+            if (nBytes <= MAX_FREE_TRANSACTION_CREATE_SIZE && dPriority >= dPriorityNeeded)
+                nPayFee = 0;
+        }
 
         if (nPayAmount > 0)
         {
@@ -612,7 +620,7 @@ void CoinControlDialog::updateLabels(WalletModel *model, QDialog* dialog)
     QString toolTip3 = tr("This label turns red, if any recipient receives an amount smaller than %1.").arg(BitcoinUnits::formatWithUnit(nDisplayUnit, ::minRelayTxFee.GetFee(546)));
 
     // how many satoshis the estimated fee can vary per byte we guess wrong
-    double dFeeVary = (double)std::max(CWallet::minTxFee.GetFeePerK(), payTxFee.GetFeePerK()) / 1000;
+    double dFeeVary = (double)std::max(CWallet::minTxFee.GetFeePerK(), std::max(payTxFee.GetFeePerK(), mempool.estimateFee(nTxConfirmTarget).GetFeePerK())) / 1000;
     QString toolTip4 = tr("Can vary +/- %1 satoshi(s) per input.").arg(dFeeVary);
 
     l3->setToolTip(toolTip4);
diff --git a/src/wallet.cpp b/src/wallet.cpp
index ea99b89a5a..a54494f935 100644
--- a/src/wallet.cpp
+++ b/src/wallet.cpp
@@ -1484,7 +1484,7 @@ bool CWallet::CreateTransaction(const vector<pair<CScript, int64_t> >& vecSend,
                     break;
 
                 // Small enough, and priority high enough, to send for free
-                if (dPriority >= dPriorityNeeded)
+                if (dPriorityNeeded > 0 && dPriority >= dPriorityNeeded)
                     break;
 
                 // Include more fee and try again.