From f5e3042b7acd676247f7f8b0cb80e765dd145b4e Mon Sep 17 00:00:00 2001
From: UdjinM6 <UdjinM6@users.noreply.github.com>
Date: Mon, 30 May 2016 10:22:15 +0400
Subject: [PATCH] create INSTANTSEND_MIN_FEE to manage IS fee in one place
 (#829)

---
 src/instantx.cpp             | 2 +-
 src/instantx.h               | 1 +
 src/qt/coincontroldialog.cpp | 4 ++--
 src/wallet/wallet.cpp        | 2 +-
 4 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/instantx.cpp b/src/instantx.cpp
index 8fa870b1dc..2787020a36 100644
--- a/src/instantx.cpp
+++ b/src/instantx.cpp
@@ -207,7 +207,7 @@ bool IsIXTXValid(const CTransaction& txCollateral){
         return true;
     }
 
-    if(nValueIn-nValueOut < CENT) {
+    if(nValueIn-nValueOut < INSTANTSEND_MIN_FEE) {
         LogPrint("instantsend", "IsIXTXValid - did not include enough fees in transaction %d\n%s\n", nValueOut-nValueIn, txCollateral.ToString());
         return false;
     }
diff --git a/src/instantx.h b/src/instantx.h
index 6384081140..b637debccf 100644
--- a/src/instantx.h
+++ b/src/instantx.h
@@ -33,6 +33,7 @@ class CTransaction;
 class CTransactionLock;
 
 static const int MIN_INSTANTX_PROTO_VERSION = 70103;
+static const CAmount INSTANTSEND_MIN_FEE = 1 * CENT;
 
 extern map<uint256, CTransaction> mapTxLockReq;
 extern map<uint256, CTransaction> mapTxLockReqRejected;
diff --git a/src/qt/coincontroldialog.cpp b/src/qt/coincontroldialog.cpp
index c9163851eb..e708008379 100644
--- a/src/qt/coincontroldialog.cpp
+++ b/src/qt/coincontroldialog.cpp
@@ -606,8 +606,8 @@ void CoinControlDialog::updateLabels(WalletModel *model, QDialog* dialog)
         if (nPayFee > 0 && coinControl->nMinimumTotalFee > nPayFee)
             nPayFee = coinControl->nMinimumTotalFee;
 
-        // IX Fee
-        if(coinControl->useInstantX) nPayFee = max(nPayFee, CENT);
+        // InstantSend Fee
+        if(coinControl->useInstantX) nPayFee = max(nPayFee, INSTANTSEND_MIN_FEE);
 
         // Allow free? (require at least hard-coded threshold and default to that if no estimate)
         double dPriorityNeeded = std::max(mempoolEstimatePriority, AllowFreeThreshold());
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index b69d952281..045a62048b 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -2797,7 +2797,7 @@ bool CWallet::ConvertList(std::vector<CTxIn> vCoins, std::vector<CAmount>& vecAm
 bool CWallet::CreateTransaction(const vector<CRecipient>& vecSend, CWalletTx& wtxNew, CReserveKey& reservekey, CAmount& nFeeRet,
                                 int& nChangePosRet, std::string& strFailReason, const CCoinControl* coinControl, bool sign, AvailableCoinsType coin_type, bool useIX)
 {
-    CAmount nFeePay = useIX ? CENT : 0;
+    CAmount nFeePay = useIX ? INSTANTSEND_MIN_FEE : 0;
 
     CAmount nValue = 0;
     unsigned int nSubtractFeeFromAmount = 0;