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-rw-r--r--src/wallet.cpp17
1 files changed, 13 insertions, 4 deletions
diff --git a/src/wallet.cpp b/src/wallet.cpp
index 0f0ce7e631..6f61cfc734 100644
--- a/src/wallet.cpp
+++ b/src/wallet.cpp
@@ -1231,9 +1231,10 @@ bool CWallet::CreateTransaction(const vector<pair<CScript, int64> >& vecSend,
}
int64 nChange = nValueIn - nValue - nFeeRet;
- // if sub-cent change is required, the fee must be raised to at least nMinTxFee
- // or until nChange becomes zero
- // NOTE: this depends on the exact behaviour of GetMinFee
+ // The following if statement should be removed once enough miners
+ // have upgraded to the 0.9 GetMinFee() rules. Until then, this avoids
+ // creating free transactions that have change outputs less than
+ // CENT bitcoins.
if (nFeeRet < CTransaction::nMinTxFee && nChange > 0 && nChange < CENT)
{
int64 nMoveToFee = min(nChange, CTransaction::nMinTxFee - nFeeRet);
@@ -1299,7 +1300,15 @@ bool CWallet::CreateTransaction(const vector<pair<CScript, int64> >& vecSend,
strFailReason = _("Transaction too large");
return false;
}
- dPriority /= nBytes;
+ unsigned int nTxSizeMod = nBytes;
+ // See miner.c's dPriority logic for the matching network-node side code.
+ BOOST_FOREACH(const CTxIn& txin, (*(CTransaction*)&wtxNew).vin)
+ {
+ unsigned int offset = 41U + min(110U, (unsigned int)txin.scriptSig.size());
+ if (nTxSizeMod > offset)
+ nTxSizeMod -= offset;
+ }
+ dPriority /= nTxSizeMod;
// Check that enough fee is included
int64 nPayFee = nTransactionFee * (1 + (int64)nBytes / 1000);