diff options
| author | Pieter Wuille <pieter.wuille@gmail.com> | 2016-01-03 18:54:50 +0100 |
|---|---|---|
| committer | Pieter Wuille <pieter.wuille@gmail.com> | 2016-06-22 15:43:00 +0200 |
| commit | 2b1f6f9ccf36f1e0a2c9d99154e1642f796d7c2b (patch) | |
| tree | 30b17fa55ea6c9ae0055c0c16d2e271a0c799d16 /src/policy | |
| parent | 7c4bf779e8b74e474551982a24f5acc265293abd (diff) | |
BIP141: Other consensus critical limits, and BIP145
Includes changes by Suhas Daftuar, Luke-jr, and mruddy.
Diffstat (limited to 'src/policy')
| -rw-r--r-- | src/policy/policy.cpp | 14 | ||||
| -rw-r--r-- | src/policy/policy.h | 10 |
2 files changed, 20 insertions, 4 deletions
diff --git a/src/policy/policy.cpp b/src/policy/policy.cpp index 67434a38fa..f2148bfe10 100644 --- a/src/policy/policy.cpp +++ b/src/policy/policy.cpp @@ -64,8 +64,8 @@ bool IsStandardTx(const CTransaction& tx, std::string& reason) // almost as much to process as they cost the sender in fees, because // computing signature hashes is O(ninputs*txsize). Limiting transactions // to MAX_STANDARD_TX_SIZE mitigates CPU exhaustion attacks. - unsigned int sz = tx.GetSerializeSize(SER_NETWORK, CTransaction::CURRENT_VERSION); - if (sz >= MAX_STANDARD_TX_SIZE) { + unsigned int sz = GetTransactionCost(tx); + if (sz >= MAX_STANDARD_TX_COST) { reason = "tx-size"; return false; } @@ -150,3 +150,13 @@ bool AreInputsStandard(const CTransaction& tx, const CCoinsViewCache& mapInputs) return true; } + +int64_t GetVirtualTransactionSize(int64_t nCost) +{ + return (nCost + WITNESS_SCALE_FACTOR - 1) / WITNESS_SCALE_FACTOR; +} + +int64_t GetVirtualTransactionSize(const CTransaction& tx) +{ + return GetVirtualTransactionSize(GetTransactionCost(tx)); +} diff --git a/src/policy/policy.h b/src/policy/policy.h index a6bcc777ff..fefb562ff9 100644 --- a/src/policy/policy.h +++ b/src/policy/policy.h @@ -19,12 +19,14 @@ static const unsigned int DEFAULT_BLOCK_MAX_SIZE = 750000; static const unsigned int DEFAULT_BLOCK_MIN_SIZE = 0; /** Default for -blockprioritysize, maximum space for zero/low-fee transactions **/ static const unsigned int DEFAULT_BLOCK_PRIORITY_SIZE = 0; +/** Default for -blockmaxcost, which control the range of block costs the mining code will create **/ +static const unsigned int DEFAULT_BLOCK_MAX_COST = 3000000; /** The maximum size for transactions we're willing to relay/mine */ -static const unsigned int MAX_STANDARD_TX_SIZE = 100000; +static const unsigned int MAX_STANDARD_TX_COST = 400000; /** Maximum number of signature check operations in an IsStandard() P2SH script */ static const unsigned int MAX_P2SH_SIGOPS = 15; /** The maximum number of sigops we're willing to relay/mine in a single tx */ -static const unsigned int MAX_STANDARD_TX_SIGOPS = MAX_BLOCK_SIGOPS/5; +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; /** @@ -65,4 +67,8 @@ bool IsStandardTx(const CTransaction& tx, std::string& reason); */ bool AreInputsStandard(const CTransaction& tx, const CCoinsViewCache& mapInputs); +/** Compute the virtual transaction size (cost reinterpreted as bytes). */ +int64_t GetVirtualTransactionSize(int64_t nCost); +int64_t GetVirtualTransactionSize(const CTransaction& tx); + #endif // BITCOIN_POLICY_POLICY_H |