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require some minimal priority for free transactions to slow down transaction spam

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git-svn-id: https://bitcoin.svn.sourceforge.net/svnroot/bitcoin/trunk@185 1a98c847-1fd6-4fd8-948a-caf3550aa51b
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s_nakamoto
2010-11-19 23:37:05 +00:00
parent 683bcb9154
commit f35e21e2e4
3 changed files with 16 additions and 11 deletions
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6
main.cpp
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@@ -3197,6 +3197,7 @@ void BitcoinMiner()
while (!mapPriority.empty())
{
// Take highest priority transaction off priority queue
double dPriority = (*mapPriority.begin()).first;
CTransaction& tx = *(*mapPriority.begin()).second;
mapPriority.erase(mapPriority.begin());
@@ -3208,8 +3209,9 @@ void BitcoinMiner()
if (nBlockSigOps + nTxSigOps >= MAX_BLOCK_SIGOPS)
continue;
// Transaction fee based on block size
int64 nMinFee = tx.GetMinFee(nBlockSize);
// Transaction fee required depends on block size
bool fAllowFree = (nBlockSize + nTxSize < 4000 || dPriority > COIN * 144 / 250);
int64 nMinFee = tx.GetMinFee(nBlockSize, fAllowFree);
// Connecting shouldn't fail due to dependency on other memory pool transactions
// because we're already processing them in order of dependency