From ab942c15bd3854650afa810d7c22d7fd30d346c1 Mon Sep 17 00:00:00 2001 From: Pieter Wuille Date: Mon, 18 Jul 2016 20:57:20 +0200 Subject: [PATCH] Treat high-sigop transactions as larger rather than rejecting them --- src/init.cpp | 2 +- src/main.cpp | 3 +-- src/main.h | 2 -- src/policy/policy.cpp | 10 ++++++---- src/policy/policy.h | 8 ++++++-- src/txmempool.cpp | 2 +- 6 files changed, 15 insertions(+), 12 deletions(-) diff --git a/src/init.cpp b/src/init.cpp index 312dfe1699..8d4a2cafbf 100644 --- a/src/init.cpp +++ b/src/init.cpp @@ -446,7 +446,7 @@ std::string HelpMessage(HelpMessageMode mode) strUsage += HelpMessageGroup(_("Node relay options:")); if (showDebug) strUsage += HelpMessageOpt("-acceptnonstdtxn", strprintf("Relay and mine \"non-standard\" transactions (%sdefault: %u)", "testnet/regtest only; ", !Params(CBaseChainParams::TESTNET).RequireStandard())); - strUsage += HelpMessageOpt("-bytespersigop", strprintf(_("Minimum bytes per sigop in transactions we relay and mine (default: %u)"), DEFAULT_BYTES_PER_SIGOP)); + strUsage += HelpMessageOpt("-bytespersigop", strprintf(_("Equivalent bytes per sigop in transactions for relay and mining (default: %u)"), DEFAULT_BYTES_PER_SIGOP)); strUsage += HelpMessageOpt("-datacarrier", strprintf(_("Relay and mine data carrier transactions (default: %u)"), DEFAULT_ACCEPT_DATACARRIER)); strUsage += HelpMessageOpt("-datacarriersize", strprintf(_("Maximum size of data in data carrier transactions we relay and mine (default: %u)"), MAX_OP_RETURN_RELAY)); strUsage += HelpMessageOpt("-mempoolreplacement", strprintf(_("Enable transaction replacement in the memory pool (default: %u)"), DEFAULT_ENABLE_REPLACEMENT)); diff --git a/src/main.cpp b/src/main.cpp index fe19895f5f..e07d99ab06 100644 --- a/src/main.cpp +++ b/src/main.cpp @@ -74,7 +74,6 @@ bool fHavePruned = false; bool fPruneMode = false; bool fIsBareMultisigStd = DEFAULT_PERMIT_BAREMULTISIG; bool fRequireStandard = true; -unsigned int nBytesPerSigOp = DEFAULT_BYTES_PER_SIGOP; bool fCheckBlockIndex = false; bool fCheckpointsEnabled = DEFAULT_CHECKPOINTS_ENABLED; size_t nCoinCacheUsage = 5000 * 300; @@ -1296,7 +1295,7 @@ bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState& state, const C // itself can contain sigops MAX_STANDARD_TX_SIGOPS is less than // MAX_BLOCK_SIGOPS; we still consider this an invalid rather than // merely non-standard transaction. - if ((nSigOpsCost > MAX_STANDARD_TX_SIGOPS_COST) || (nBytesPerSigOp && nSigOpsCost > nSize * WITNESS_SCALE_FACTOR / nBytesPerSigOp)) + if (nSigOpsCost > MAX_STANDARD_TX_SIGOPS_COST) return state.DoS(0, false, REJECT_NONSTANDARD, "bad-txns-too-many-sigops", false, strprintf("%d", nSigOpsCost)); diff --git a/src/main.h b/src/main.h index 27121890f6..631dc00d05 100644 --- a/src/main.h +++ b/src/main.h @@ -124,7 +124,6 @@ static const int64_t DEFAULT_MAX_TIP_AGE = 24 * 60 * 60; /** Default for -permitbaremultisig */ static const bool DEFAULT_PERMIT_BAREMULTISIG = true; -static const unsigned int DEFAULT_BYTES_PER_SIGOP = 20; static const bool DEFAULT_CHECKPOINTS_ENABLED = true; static const bool DEFAULT_TXINDEX = false; static const unsigned int DEFAULT_BANSCORE_THRESHOLD = 100; @@ -165,7 +164,6 @@ extern int nScriptCheckThreads; extern bool fTxIndex; extern bool fIsBareMultisigStd; extern bool fRequireStandard; -extern unsigned int nBytesPerSigOp; extern bool fCheckBlockIndex; extern bool fCheckpointsEnabled; extern size_t nCoinCacheUsage; diff --git a/src/policy/policy.cpp b/src/policy/policy.cpp index 8617db00c8..0cd3ac7119 100644 --- a/src/policy/policy.cpp +++ b/src/policy/policy.cpp @@ -151,12 +151,14 @@ bool AreInputsStandard(const CTransaction& tx, const CCoinsViewCache& mapInputs) return true; } -int64_t GetVirtualTransactionSize(int64_t nWeight) +unsigned int nBytesPerSigOp = DEFAULT_BYTES_PER_SIGOP; + +int64_t GetVirtualTransactionSize(int64_t nWeight, int64_t nSigOpCost) { - return (nWeight + WITNESS_SCALE_FACTOR - 1) / WITNESS_SCALE_FACTOR; + return (std::max(nWeight, nSigOpCost * nBytesPerSigOp) + WITNESS_SCALE_FACTOR - 1) / WITNESS_SCALE_FACTOR; } -int64_t GetVirtualTransactionSize(const CTransaction& tx) +int64_t GetVirtualTransactionSize(const CTransaction& tx, int64_t nSigOpCost) { - return GetVirtualTransactionSize(GetTransactionWeight(tx)); + return GetVirtualTransactionSize(GetTransactionWeight(tx), nSigOpCost); } diff --git a/src/policy/policy.h b/src/policy/policy.h index f5f8652fb5..b82c9e66b8 100644 --- a/src/policy/policy.h +++ b/src/policy/policy.h @@ -28,6 +28,8 @@ static const unsigned int MAX_P2SH_SIGOPS = 15; static const unsigned int MAX_STANDARD_TX_SIGOPS_COST = MAX_BLOCK_SIGOPS_COST/5; /** Default for -maxmempool, maximum megabytes of mempool memory usage */ static const unsigned int DEFAULT_MAX_MEMPOOL_SIZE = 300; +/** Default for -bytespersigop */ +static const unsigned int DEFAULT_BYTES_PER_SIGOP = 20; /** * Standard script verification flags that standard transactions will comply * with. However scripts violating these flags may still be present in valid @@ -66,8 +68,10 @@ bool IsStandardTx(const CTransaction& tx, std::string& reason); */ bool AreInputsStandard(const CTransaction& tx, const CCoinsViewCache& mapInputs); +extern unsigned int nBytesPerSigOp; + /** Compute the virtual transaction size (weight reinterpreted as bytes). */ -int64_t GetVirtualTransactionSize(int64_t nWeight); -int64_t GetVirtualTransactionSize(const CTransaction& tx); +int64_t GetVirtualTransactionSize(int64_t nWeight, int64_t nSigOpCost); +int64_t GetVirtualTransactionSize(const CTransaction& tx, int64_t nSigOpCost = 0); #endif // BITCOIN_POLICY_POLICY_H diff --git a/src/txmempool.cpp b/src/txmempool.cpp index 691baa6744..82827b8e4f 100644 --- a/src/txmempool.cpp +++ b/src/txmempool.cpp @@ -75,7 +75,7 @@ void CTxMemPoolEntry::UpdateLockPoints(const LockPoints& lp) size_t CTxMemPoolEntry::GetTxSize() const { - return GetVirtualTransactionSize(nTxWeight); + return GetVirtualTransactionSize(nTxWeight, sigOpCost); } // Update the given tx for any in-mempool descendants.