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Store orphan blocks in serialized form

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This commit is contained in:
Pieter Wuille 2014-01-11 23:33:34 +01:00
parent dc64c3c374
commit da0fecffa7
1 changed files with 41 additions and 17 deletions
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58
src/main.cpp
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@ -56,8 +56,13 @@ int64_t CTransaction::nMinRelayTxFee = 10000;
static CMedianFilter<int> cPeerBlockCounts(8, 0); // Amount of blocks that other nodes claim to have
map<uint256, CBlock*> mapOrphanBlocks;
multimap<uint256, CBlock*> mapOrphanBlocksByPrev;
struct COrphanBlock {
uint256 hashBlock;
uint256 hashPrev;
vector<unsigned char> vchBlock;
};
map<uint256, COrphanBlock*> mapOrphanBlocks;
multimap<uint256, COrphanBlock*> mapOrphanBlocksByPrev;
map<uint256, CTransaction> mapOrphanTransactions;
map<uint256, set<uint256> > mapOrphanTransactionsByPrev;
@ -985,12 +990,19 @@ bool ReadBlockFromDisk(CBlock& block, const CBlockIndex* pindex)
return true;
}
uint256 static GetOrphanRoot(const CBlockHeader* pblock)
uint256 static GetOrphanRoot(const uint256& hash)
{
map<uint256, COrphanBlock*>::iterator it = mapOrphanBlocks.find(hash);
if (it == mapOrphanBlocks.end())
return hash;
// Work back to the first block in the orphan chain
while (mapOrphanBlocks.count(pblock->hashPrevBlock))
pblock = mapOrphanBlocks[pblock->hashPrevBlock];
return pblock->GetHash();
do {
map<uint256, COrphanBlock*>::iterator it2 = mapOrphanBlocks.find(it->second->hashPrev);
if (it2 == mapOrphanBlocks.end())
return it->first;
it = it2;
} while(true);
}
int64_t GetBlockValue(int nHeight, int64_t nFees)
@ -2277,12 +2289,19 @@ bool ProcessBlock(CValidationState &state, CNode* pfrom, CBlock* pblock, CDiskBl
// Accept orphans as long as there is a node to request its parents from
if (pfrom) {
CBlock* pblock2 = new CBlock(*pblock);
COrphanBlock* pblock2 = new COrphanBlock();
{
CDataStream ss(SER_DISK, CLIENT_VERSION);
ss << *pblock;
pblock2->vchBlock = std::vector<unsigned char>(ss.begin(), ss.end());
}
pblock2->hashBlock = hash;
pblock2->hashPrev = pblock->hashPrevBlock;
mapOrphanBlocks.insert(make_pair(hash, pblock2));
mapOrphanBlocksByPrev.insert(make_pair(pblock2->hashPrevBlock, pblock2));
mapOrphanBlocksByPrev.insert(make_pair(pblock2->hashPrev, pblock2));
// Ask this guy to fill in what we're missing
PushGetBlocks(pfrom, chainActive.Tip(), GetOrphanRoot(pblock2));
PushGetBlocks(pfrom, chainActive.Tip(), GetOrphanRoot(hash));
}
return true;
}
@ -2297,17 +2316,22 @@ bool ProcessBlock(CValidationState &state, CNode* pfrom, CBlock* pblock, CDiskBl
for (unsigned int i = 0; i < vWorkQueue.size(); i++)
{
uint256 hashPrev = vWorkQueue[i];
for (multimap<uint256, CBlock*>::iterator mi = mapOrphanBlocksByPrev.lower_bound(hashPrev);
for (multimap<uint256, COrphanBlock*>::iterator mi = mapOrphanBlocksByPrev.lower_bound(hashPrev);
mi != mapOrphanBlocksByPrev.upper_bound(hashPrev);
++mi)
{
CBlock* pblockOrphan = (*mi).second;
CBlock block;
{
CDataStream ss(mi->second->vchBlock, SER_DISK, CLIENT_VERSION);
ss >> block;
}
block.BuildMerkleTree();
// Use a dummy CValidationState so someone can't setup nodes to counter-DoS based on orphan resolution (that is, feeding people an invalid block based on LegitBlockX in order to get anyone relaying LegitBlockX banned)
CValidationState stateDummy;
if (AcceptBlock(*pblockOrphan, stateDummy))
vWorkQueue.push_back(pblockOrphan->GetHash());
mapOrphanBlocks.erase(pblockOrphan->GetHash());
delete pblockOrphan;
if (AcceptBlock(block, stateDummy))
vWorkQueue.push_back(mi->second->hashBlock);
mapOrphanBlocks.erase(mi->second->hashBlock);
delete mi->second;
}
mapOrphanBlocksByPrev.erase(hashPrev);
}
@ -3331,7 +3355,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
if (!fImporting && !fReindex)
pfrom->AskFor(inv);
} else if (inv.type == MSG_BLOCK && mapOrphanBlocks.count(inv.hash)) {
PushGetBlocks(pfrom, chainActive.Tip(), GetOrphanRoot(mapOrphanBlocks[inv.hash]));
PushGetBlocks(pfrom, chainActive.Tip(), GetOrphanRoot(inv.hash));
} else if (nInv == nLastBlock) {
// In case we are on a very long side-chain, it is possible that we already have
// the last block in an inv bundle sent in response to getblocks. Try to detect
@ -4119,7 +4143,7 @@ public:
mapBlockIndex.clear();
// orphan blocks
std::map<uint256, CBlock*>::iterator it2 = mapOrphanBlocks.begin();
std::map<uint256, COrphanBlock*>::iterator it2 = mapOrphanBlocks.begin();
for (; it2 != mapOrphanBlocks.end(); it2++)
delete (*it2).second;
mapOrphanBlocks.clear();