diff options
Diffstat (limited to 'src/main.cpp')
| -rw-r--r-- | src/main.cpp | 50 |
1 files changed, 38 insertions, 12 deletions
diff --git a/src/main.cpp b/src/main.cpp index 0b5b52b499..21161ad24f 100644 --- a/src/main.cpp +++ b/src/main.cpp @@ -921,6 +921,17 @@ bool AcceptToMemoryPool(CTxMemPool& pool, CValidationState &state, const CTransa REJECT_HIGHFEE, "absurdly-high-fee", strprintf("%d > %d", nFees, ::minRelayTxFee.GetFee(nSize) * 10000)); + // Calculate in-mempool ancestors, up to a limit. + CTxMemPool::setEntries setAncestors; + size_t nLimitAncestors = GetArg("-limitancestorcount", DEFAULT_ANCESTOR_LIMIT); + size_t nLimitAncestorSize = GetArg("-limitancestorsize", DEFAULT_ANCESTOR_SIZE_LIMIT)*1000; + size_t nLimitDescendants = GetArg("-limitdescendantcount", DEFAULT_DESCENDANT_LIMIT); + size_t nLimitDescendantSize = GetArg("-limitdescendantsize", DEFAULT_DESCENDANT_SIZE_LIMIT)*1000; + std::string errString; + if (!pool.CalculateMemPoolAncestors(entry, setAncestors, nLimitAncestors, nLimitAncestorSize, nLimitDescendants, nLimitDescendantSize, errString)) { + return state.DoS(0, false, REJECT_NONSTANDARD, "too-long-mempool-chain", false, errString); + } + // Check against previous transactions // This is done last to help prevent CPU exhaustion denial-of-service attacks. if (!CheckInputs(tx, state, view, true, STANDARD_SCRIPT_VERIFY_FLAGS, true)) @@ -942,7 +953,7 @@ bool AcceptToMemoryPool(CTxMemPool& pool, CValidationState &state, const CTransa } // Store transaction in memory - pool.addUnchecked(hash, entry, !IsInitialBlockDownload()); + pool.addUnchecked(hash, entry, setAncestors, !IsInitialBlockDownload()); } SyncWithWallets(tx, NULL); @@ -2031,13 +2042,23 @@ bool static DisconnectTip(CValidationState &state) { if (!FlushStateToDisk(state, FLUSH_STATE_IF_NEEDED)) return false; // Resurrect mempool transactions from the disconnected block. + std::vector<uint256> vHashUpdate; BOOST_FOREACH(const CTransaction &tx, block.vtx) { // ignore validation errors in resurrected transactions list<CTransaction> removed; CValidationState stateDummy; - if (tx.IsCoinBase() || !AcceptToMemoryPool(mempool, stateDummy, tx, false, NULL)) + if (tx.IsCoinBase() || !AcceptToMemoryPool(mempool, stateDummy, tx, false, NULL)) { mempool.remove(tx, removed, true); + } else if (mempool.exists(tx.GetHash())) { + vHashUpdate.push_back(tx.GetHash()); + } } + // AcceptToMemoryPool/addUnchecked all assume that new mempool entries have + // no in-mempool children, which is generally not true when adding + // previously-confirmed transactions back to the mempool. + // UpdateTransactionsFromBlock finds descendants of any transactions in this + // block that were added back and cleans up the mempool state. + mempool.UpdateTransactionsFromBlock(vHashUpdate); mempool.removeCoinbaseSpends(pcoinsTip, pindexDelete->nHeight); mempool.check(pcoinsTip); // Update chainActive and related variables. @@ -2292,9 +2313,7 @@ bool ActivateBestChain(CValidationState &state, const CBlock *pblock) { int nBlockEstimate = 0; if (fCheckpointsEnabled) nBlockEstimate = Checkpoints::GetTotalBlocksEstimate(chainParams.Checkpoints()); - // Don't relay blocks if pruning -- could cause a peer to try to download, resulting - // in a stalled download if the block file is pruned before the request. - if (nLocalServices & NODE_NETWORK) { + { LOCK(cs_vNodes); BOOST_FOREACH(CNode* pnode, vNodes) if (chainActive.Height() > (pnode->nStartingHeight != -1 ? pnode->nStartingHeight - 2000 : nBlockEstimate)) @@ -4175,6 +4194,14 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, LogPrint("net", " getblocks stopping at %d %s\n", pindex->nHeight, pindex->GetBlockHash().ToString()); break; } + // If pruning, don't inv blocks unless we have on disk and are likely to still have + // for some reasonable time window (1 hour) that block relay might require. + const int nPrunedBlocksLikelyToHave = MIN_BLOCKS_TO_KEEP - 3600 / chainparams.GetConsensus().nPowTargetSpacing; + if (fPruneMode && (!(pindex->nStatus & BLOCK_HAVE_DATA) || pindex->nHeight <= chainActive.Tip()->nHeight - nPrunedBlocksLikelyToHave)) + { + LogPrint("net", " getblocks stopping, pruned or too old block at %d %s\n", pindex->nHeight, pindex->GetBlockHash().ToString()); + break; + } pfrom->PushInventory(CInv(MSG_BLOCK, pindex->GetBlockHash())); if (--nLimit <= 0) { @@ -4253,10 +4280,10 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, RelayTransaction(tx); vWorkQueue.push_back(inv.hash); - LogPrint("mempool", "AcceptToMemoryPool: peer=%d %s: accepted %s (poolsz %u)\n", - pfrom->id, pfrom->cleanSubVer, + LogPrint("mempool", "AcceptToMemoryPool: peer=%d: accepted %s (poolsz %u)\n", + pfrom->id, tx.GetHash().ToString(), - mempool.mapTx.size()); + mempool.size()); // Recursively process any orphan transactions that depended on this one set<NodeId> setMisbehaving; @@ -4343,8 +4370,8 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, int nDoS = 0; if (state.IsInvalid(nDoS)) { - LogPrint("mempoolrej", "%s from peer=%d %s was not accepted into the memory pool: %s\n", tx.GetHash().ToString(), - pfrom->id, pfrom->cleanSubVer, + LogPrint("mempoolrej", "%s from peer=%d was not accepted: %s\n", tx.GetHash().ToString(), + pfrom->id, FormatStateMessage(state)); if (state.GetRejectCode() < REJECT_INTERNAL) // Never send AcceptToMemoryPool's internal codes over P2P pfrom->PushMessage("reject", strCommand, state.GetRejectCode(), @@ -4545,9 +4572,8 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv, } if (!(sProblem.empty())) { - LogPrint("net", "pong peer=%d %s: %s, %x expected, %x received, %u bytes\n", + LogPrint("net", "pong peer=%d: %s, %x expected, %x received, %u bytes\n", pfrom->id, - pfrom->cleanSubVer, sProblem, pfrom->nPingNonceSent, nonce, |