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Remove invalid dependent orphans from memory

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Remove orphan transactions from memory once
all of their parent transactions are received
and they're still not valid.
Thanks to Sergio Demian Lerner for suggesting this fix.
This commit is contained in:
Gavin Andresen 2012-05-17 10:12:04 -04:00
parent 77b99cf7ad
commit 7a15109c04
1 changed files with 12 additions and 2 deletions
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14
src/main.cpp
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@ -2564,6 +2564,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
else if (strCommand == "tx") else if (strCommand == "tx")
{ {
vector<uint256> vWorkQueue; vector<uint256> vWorkQueue;
vector<uint256> vEraseQueue;
CDataStream vMsg(vRecv); CDataStream vMsg(vRecv);
CTxDB txdb("r"); CTxDB txdb("r");
CTransaction tx; CTransaction tx;
@ -2579,6 +2580,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
RelayMessage(inv, vMsg); RelayMessage(inv, vMsg);
mapAlreadyAskedFor.erase(inv); mapAlreadyAskedFor.erase(inv);
vWorkQueue.push_back(inv.hash); vWorkQueue.push_back(inv.hash);
vEraseQueue.push_back(inv.hash);
// Recursively process any orphan transactions that depended on this one // Recursively process any orphan transactions that depended on this one
for (unsigned int i = 0; i < vWorkQueue.size(); i++) for (unsigned int i = 0; i < vWorkQueue.size(); i++)
@ -2592,19 +2594,27 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
CTransaction tx; CTransaction tx;
CDataStream(vMsg) >> tx; CDataStream(vMsg) >> tx;
CInv inv(MSG_TX, tx.GetHash()); CInv inv(MSG_TX, tx.GetHash());
bool fMissingInputs2 = false;
if (tx.AcceptToMemoryPool(txdb, true)) if (tx.AcceptToMemoryPool(txdb, true, &fMissingInputs2))
{ {
printf(" accepted orphan tx %s\n", inv.hash.ToString().substr(0,10).c_str()); printf(" accepted orphan tx %s\n", inv.hash.ToString().substr(0,10).c_str());
SyncWithWallets(tx, NULL, true); SyncWithWallets(tx, NULL, true);
RelayMessage(inv, vMsg); RelayMessage(inv, vMsg);
mapAlreadyAskedFor.erase(inv); mapAlreadyAskedFor.erase(inv);
vWorkQueue.push_back(inv.hash); vWorkQueue.push_back(inv.hash);
vEraseQueue.push_back(inv.hash);
}
else if (!fMissingInputs2)
{
// invalid orphan
vEraseQueue.push_back(inv.hash);
printf(" removed invalid orphan tx %s\n", inv.hash.ToString().substr(0,10).c_str());
} }
} }
} }
BOOST_FOREACH(uint256 hash, vWorkQueue) BOOST_FOREACH(uint256 hash, vEraseQueue)
EraseOrphanTx(hash); EraseOrphanTx(hash);
} }
else if (fMissingInputs) else if (fMissingInputs)