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Merge bitcoin/bitcoin#29496: policy: bump TX_MAX_STANDARD_VERSION to 3

Browse source 
30a01134cd [doc] update bips.md for 431 (glozow)
9dbe6a03f0 [test] wallet uses CURRENT_VERSION which is 2 (glozow)
539404fe0f [policy] make v3 transactions standard (glozow)
052ede75af [refactor] use TRUC_VERSION in place of 3 (glozow)

Pull request description:

  Make `nVersion=3` (which is currently nonstandard on mainnet) standard.

  Note that we will treat these transactions as Topologically Restricted Until Confirmation (TRUC). Spec is in BIP 431 and implementation is in #28948, #29306, and #29873

  See #27463 for overall project tracking, and #29319 for information about relevance to cluster mempool.

ACKs for top commit:
  sdaftuar:
    utACK 30a01134c
  achow101:
    ACK 30a01134cd
  instagibbs:
    utACK 30a01134cd
  murchandamus:
    ACK 30a01134cd
  ismaelsadeeq:
    ACK 30a01134cd 🛰️

Tree-SHA512: 2a4aec0442c860e792a061d83e36483c1f1b426f946efbdf664c8db97a596e498b535707e1d3a900218429486ea69fd4552e3d476526a6883cbd5556c6534b48
This commit is contained in:
Ava Chow 2024-06-07 12:30:46 -04:00
commit 6e4d18f37f
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GPG key ID: 17565732E08E5E41
12 changed files with 58 additions and 35 deletions
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1
doc/bips.md
View file

@ -69,3 +69,4 @@ BIPs that are implemented by Bitcoin Core:
[`385`](https://github.com/bitcoin/bips/blob/master/bip-0385.mediawiki):
Output Script Descriptors, and most of Script Expressions are implemented as of **v0.17.0** ([PR 13697](https://github.com/bitcoin/bitcoin/pull/13697)).
* [`BIP 386`](https://github.com/bitcoin/bips/blob/master/bip-0386.mediawiki): tr() Output Script Descriptors are implemented as of **v22.0** ([PR 22051](https://github.com/bitcoin/bitcoin/pull/22051)).
* [`BIP 431`](https://github.com/bitcoin/bips/blob/master/bip-0431.mediawiki): transactions with nVersion=3 are standard and treated as Topologically Restricted Until Confirmation as of **v28.0** ([PR 29496](https://github.com/bitcoin/bitcoin/pull/29496)).

2
src/policy/policy.h
View file

@ -131,7 +131,7 @@ bool IsStandard(const CScript& scriptPubKey, const std::optional<unsigned>& max_
// Changing the default transaction version requires a two step process: first
// adapting relay policy by bumping TX_MAX_STANDARD_VERSION, and then later
// allowing the new transaction version in the wallet/RPC.
static constexpr decltype(CTransaction::nVersion) TX_MAX_STANDARD_VERSION{2};
static constexpr decltype(CTransaction::nVersion) TX_MAX_STANDARD_VERSION{3};
/**
* Check for standard transaction types

14
src/policy/v3_policy.cpp
View file

@ -66,7 +66,7 @@ std::optional<std::string> PackageV3Checks(const CTransactionRef& ptx, int64_t v
const auto in_package_parents{FindInPackageParents(package, ptx)};
// Now we have all ancestors, so we can start checking v3 rules.
if (ptx->nVersion == 3) {
if (ptx->nVersion == TRUC_VERSION) {
// SingleV3Checks should have checked this already.
if (!Assume(vsize <= V3_MAX_VSIZE)) {
return strprintf("v3 tx %s (wtxid=%s) is too big: %u > %u virtual bytes",
@ -107,7 +107,7 @@ std::optional<std::string> PackageV3Checks(const CTransactionRef& ptx, int64_t v
}();
// If there is a parent, it must have the right version.
if (parent_info.m_version != 3) {
if (parent_info.m_version != TRUC_VERSION) {
return strprintf("v3 tx %s (wtxid=%s) cannot spend from non-v3 tx %s (wtxid=%s)",
ptx->GetHash().ToString(), ptx->GetWitnessHash().ToString(),
parent_info.m_txid.ToString(), parent_info.m_wtxid.ToString());
@ -146,14 +146,14 @@ std::optional<std::string> PackageV3Checks(const CTransactionRef& ptx, int64_t v
} else {
// Non-v3 transactions cannot have v3 parents.
for (auto it : mempool_ancestors) {
if (it->GetTx().nVersion == 3) {
if (it->GetTx().nVersion == TRUC_VERSION) {
return strprintf("non-v3 tx %s (wtxid=%s) cannot spend from v3 tx %s (wtxid=%s)",
ptx->GetHash().ToString(), ptx->GetWitnessHash().ToString(),
it->GetSharedTx()->GetHash().ToString(), it->GetSharedTx()->GetWitnessHash().ToString());
}
}
for (const auto& index: in_package_parents) {
if (package.at(index)->nVersion == 3) {
if (package.at(index)->nVersion == TRUC_VERSION) {
return strprintf("non-v3 tx %s (wtxid=%s) cannot spend from v3 tx %s (wtxid=%s)",
ptx->GetHash().ToString(),
ptx->GetWitnessHash().ToString(),
@ -172,12 +172,12 @@ std::optional<std::pair<std::string, CTransactionRef>> SingleV3Checks(const CTra
{
// Check v3 and non-v3 inheritance.
for (const auto& entry : mempool_ancestors) {
if (ptx->nVersion != 3 && entry->GetTx().nVersion == 3) {
if (ptx->nVersion != TRUC_VERSION && entry->GetTx().nVersion == TRUC_VERSION) {
return std::make_pair(strprintf("non-v3 tx %s (wtxid=%s) cannot spend from v3 tx %s (wtxid=%s)",
ptx->GetHash().ToString(), ptx->GetWitnessHash().ToString(),
entry->GetSharedTx()->GetHash().ToString(), entry->GetSharedTx()->GetWitnessHash().ToString()),
nullptr);
} else if (ptx->nVersion == 3 && entry->GetTx().nVersion != 3) {
} else if (ptx->nVersion == TRUC_VERSION && entry->GetTx().nVersion != TRUC_VERSION) {
return std::make_pair(strprintf("v3 tx %s (wtxid=%s) cannot spend from non-v3 tx %s (wtxid=%s)",
ptx->GetHash().ToString(), ptx->GetWitnessHash().ToString(),
entry->GetSharedTx()->GetHash().ToString(), entry->GetSharedTx()->GetWitnessHash().ToString()),
@ -190,7 +190,7 @@ std::optional<std::pair<std::string, CTransactionRef>> SingleV3Checks(const CTra
static_assert(V3_DESCENDANT_LIMIT == 2);
// The rest of the rules only apply to transactions with nVersion=3.
if (ptx->nVersion != 3) return std::nullopt;
if (ptx->nVersion != TRUC_VERSION) return std::nullopt;
if (vsize > V3_MAX_VSIZE) {
return std::make_pair(strprintf("v3 tx %s (wtxid=%s) is too big: %u > %u virtual bytes",

3
src/policy/v3_policy.h
View file

@ -15,8 +15,9 @@
#include <set>
#include <string>
// This module enforces rules for transactions with nVersion=3 ("v3 transactions") which help make
// This module enforces rules for BIP 431 TRUC transactions (with nVersion=3) which help make
// RBF abilities more robust.
static constexpr decltype(CTransaction::nVersion) TRUC_VERSION{3};
// v3 only allows 1 parent and 1 child when unconfirmed.
/** Maximum number of transactions including an unconfirmed tx and its descendants. */

2
src/test/fuzz/package_eval.cpp
View file

@ -173,7 +173,7 @@ FUZZ_TARGET(tx_package_eval, .init = initialize_tx_pool)
// Create transaction to add to the mempool
const CTransactionRef tx = [&] {
CMutableTransaction tx_mut;
tx_mut.nVersion = fuzzed_data_provider.ConsumeBool() ? 3 : CTransaction::CURRENT_VERSION;
tx_mut.nVersion = fuzzed_data_provider.ConsumeBool() ? TRUC_VERSION : CTransaction::CURRENT_VERSION;
tx_mut.nLockTime = fuzzed_data_provider.ConsumeBool() ? 0 : fuzzed_data_provider.ConsumeIntegral<uint32_t>();
// Last tx will sweep all outpoints in package
const auto num_in = last_tx ? package_outpoints.size() : fuzzed_data_provider.ConsumeIntegralInRange<int>(1, mempool_outpoints.size());

2
src/test/fuzz/tx_pool.cpp
View file

@ -226,7 +226,7 @@ FUZZ_TARGET(tx_pool_standard, .init = initialize_tx_pool)
// Create transaction to add to the mempool
const CTransactionRef tx = [&] {
CMutableTransaction tx_mut;
tx_mut.nVersion = fuzzed_data_provider.ConsumeBool() ? 3 : CTransaction::CURRENT_VERSION;
tx_mut.nVersion = fuzzed_data_provider.ConsumeBool() ? TRUC_VERSION : CTransaction::CURRENT_VERSION;
tx_mut.nLockTime = fuzzed_data_provider.ConsumeBool() ? 0 : fuzzed_data_provider.ConsumeIntegral<uint32_t>();
const auto num_in = fuzzed_data_provider.ConsumeIntegralInRange<int>(1, outpoints_rbf.size());
const auto num_out = fuzzed_data_provider.ConsumeIntegralInRange<int>(1, outpoints_rbf.size() * 2);

2
src/test/txvalidation_tests.cpp
View file

@ -286,7 +286,7 @@ BOOST_FIXTURE_TEST_CASE(version3_tests, RegTestingSetup)
script_multisig << OP_2 << OP_CHECKMULTISIG;
{
CMutableTransaction mtx_many_sigops = CMutableTransaction{};
mtx_many_sigops.nVersion = 3;
mtx_many_sigops.nVersion = TRUC_VERSION;
for (const auto& outpoint : multisig_outpoints) {
mtx_many_sigops.vin.emplace_back(outpoint);
mtx_many_sigops.vin.back().scriptWitness.stack.emplace_back(script_multisig.begin(), script_multisig.end());

6
src/test/util/txmempool.cpp
View file

@ -118,7 +118,7 @@ void CheckMempoolV3Invariants(const CTxMemPool& tx_pool)
LOCK(tx_pool.cs);
for (const auto& tx_info : tx_pool.infoAll()) {
const auto& entry = *Assert(tx_pool.GetEntry(tx_info.tx->GetHash()));
if (tx_info.tx->nVersion == 3) {
if (tx_info.tx->nVersion == TRUC_VERSION) {
// Check that special maximum virtual size is respected
Assert(entry.GetTxSize() <= V3_MAX_VSIZE);
@ -133,12 +133,12 @@ void CheckMempoolV3Invariants(const CTxMemPool& tx_pool)
Assert(entry.GetTxSize() <= V3_CHILD_MAX_VSIZE);
// All v3 transactions must only have v3 unconfirmed parents.
const auto& parents = entry.GetMemPoolParentsConst();
Assert(parents.begin()->get().GetSharedTx()->nVersion == 3);
Assert(parents.begin()->get().GetSharedTx()->nVersion == TRUC_VERSION);
}
} else if (entry.GetCountWithAncestors() > 1) {
// All non-v3 transactions must only have non-v3 unconfirmed parents.
for (const auto& parent : entry.GetMemPoolParentsConst()) {
Assert(parent.get().GetSharedTx()->nVersion != 3);
Assert(parent.get().GetSharedTx()->nVersion != TRUC_VERSION);
}
}
}

6
src/validation.cpp
View file

@ -831,7 +831,7 @@ bool MemPoolAccept::PreChecks(ATMPArgs& args, Workspace& ws)
//
// Replaceability signaling of the original transactions may be
// ignored due to node setting.
const bool allow_rbf{m_pool.m_opts.full_rbf || SignalsOptInRBF(*ptxConflicting) || ptxConflicting->nVersion == 3};
const bool allow_rbf{m_pool.m_opts.full_rbf || SignalsOptInRBF(*ptxConflicting) || ptxConflicting->nVersion == TRUC_VERSION};
if (!allow_rbf) {
return state.Invalid(TxValidationResult::TX_MEMPOOL_POLICY, "txn-mempool-conflict");
}
@ -935,7 +935,7 @@ bool MemPoolAccept::PreChecks(ATMPArgs& args, Workspace& ws)
// method of ensuring the tx remains bumped. For example, the fee-bumping child could disappear
// due to a replacement.
// The only exception is v3 transactions.
if (!bypass_limits && ws.m_ptx->nVersion != 3 && ws.m_modified_fees < m_pool.m_opts.min_relay_feerate.GetFee(ws.m_vsize)) {
if (!bypass_limits && ws.m_ptx->nVersion != TRUC_VERSION && ws.m_modified_fees < m_pool.m_opts.min_relay_feerate.GetFee(ws.m_vsize)) {
// Even though this is a fee-related failure, this result is TX_MEMPOOL_POLICY, not
// TX_RECONSIDERABLE, because it cannot be bypassed using package validation.
return state.Invalid(TxValidationResult::TX_MEMPOOL_POLICY, "min relay fee not met",
@ -1017,7 +1017,7 @@ bool MemPoolAccept::PreChecks(ATMPArgs& args, Workspace& ws)
.descendant_count = maybe_rbf_limits.descendant_count + 1,
.descendant_size_vbytes = maybe_rbf_limits.descendant_size_vbytes + EXTRA_DESCENDANT_TX_SIZE_LIMIT,
};
if (ws.m_vsize > EXTRA_DESCENDANT_TX_SIZE_LIMIT || ws.m_ptx->nVersion == 3) {
if (ws.m_vsize > EXTRA_DESCENDANT_TX_SIZE_LIMIT || ws.m_ptx->nVersion == TRUC_VERSION) {
return state.Invalid(TxValidationResult::TX_MEMPOOL_POLICY, "too-long-mempool-chain", error_message);
}
if (auto ancestors_retry{m_pool.CalculateMemPoolAncestors(*entry, cpfp_carve_out_limits)}) {

2
test/functional/mempool_accept.py
View file

@ -287,7 +287,7 @@ class MempoolAcceptanceTest(BitcoinTestFramework):
self.log.info('Some nonstandard transactions')
tx = tx_from_hex(raw_tx_reference)
tx.nVersion = 3 # A version currently non-standard
tx.nVersion = 4 # A version currently non-standard
self.check_mempool_result(
result_expected=[{'txid': tx.rehash(), 'allowed': False, 'reject-reason': 'version'}],
rawtxs=[tx.serialize().hex()],

32
test/functional/mempool_accept_v3.py
View file

@ -42,7 +42,7 @@ def cleanup(extra_args=None):
class MempoolAcceptV3(BitcoinTestFramework):
def set_test_params(self):
self.num_nodes = 1
self.extra_args = [["-acceptnonstdtxn=1"]]
self.extra_args = [[]]
self.setup_clean_chain = True
def check_mempool(self, txids):
@ -51,7 +51,7 @@ class MempoolAcceptV3(BitcoinTestFramework):
assert_equal(len(txids), len(mempool_contents))
assert all([txid in txids for txid in mempool_contents])
@cleanup(extra_args=["-datacarriersize=20000", "-acceptnonstdtxn=1"])
@cleanup(extra_args=["-datacarriersize=20000"])
def test_v3_max_vsize(self):
node = self.nodes[0]
self.log.info("Test v3-specific maximum transaction vsize")
@ -65,7 +65,7 @@ class MempoolAcceptV3(BitcoinTestFramework):
tx_v2_heavy = self.wallet.send_self_transfer(from_node=node, target_weight=(V3_MAX_VSIZE + 1) * WITNESS_SCALE_FACTOR, version=2)
self.check_mempool([tx_v2_heavy["txid"]])
@cleanup(extra_args=["-datacarriersize=1000", "-acceptnonstdtxn=1"])
@cleanup(extra_args=["-datacarriersize=1000"])
def test_v3_acceptance(self):
node = self.nodes[0]
self.log.info("Test a child of a v3 transaction cannot be more than 1000vB")
@ -105,7 +105,7 @@ class MempoolAcceptV3(BitcoinTestFramework):
self.check_mempool([tx_v3_parent_normal["txid"], tx_v3_child_almost_heavy_rbf["txid"]])
assert_equal(node.getmempoolentry(tx_v3_parent_normal["txid"])["descendantcount"], 2)
@cleanup(extra_args=["-acceptnonstdtxn=1"])
@cleanup(extra_args=None)
def test_v3_replacement(self):
node = self.nodes[0]
self.log.info("Test v3 transactions may be replaced by v3 transactions")
@ -162,7 +162,7 @@ class MempoolAcceptV3(BitcoinTestFramework):
self.check_mempool([tx_v3_bip125_rbf_v2["txid"], tx_v3_parent["txid"], tx_v3_child["txid"]])
@cleanup(extra_args=["-acceptnonstdtxn=1"])
@cleanup(extra_args=None)
def test_v3_bip125(self):
node = self.nodes[0]
self.log.info("Test v3 transactions that don't signal BIP125 are replaceable")
@ -186,7 +186,7 @@ class MempoolAcceptV3(BitcoinTestFramework):
)
self.check_mempool([tx_v3_no_bip125_rbf["txid"]])
@cleanup(extra_args=["-datacarriersize=40000", "-acceptnonstdtxn=1"])
@cleanup(extra_args=["-datacarriersize=40000"])
def test_v3_reorg(self):
node = self.nodes[0]
self.log.info("Test that, during a reorg, v3 rules are not enforced")
@ -208,7 +208,7 @@ class MempoolAcceptV3(BitcoinTestFramework):
node.reconsiderblock(block[0])
@cleanup(extra_args=["-limitdescendantsize=10", "-datacarriersize=40000", "-acceptnonstdtxn=1"])
@cleanup(extra_args=["-limitdescendantsize=10", "-datacarriersize=40000"])
def test_nondefault_package_limits(self):
"""
Max standard tx size + v3 rules imply the ancestor/descendant rules (at their default
@ -241,7 +241,7 @@ class MempoolAcceptV3(BitcoinTestFramework):
self.generate(node, 1)
self.log.info("Test that a decreased limitancestorsize also applies to v3 parent")
self.restart_node(0, extra_args=["-limitancestorsize=10", "-datacarriersize=40000", "-acceptnonstdtxn=1"])
self.restart_node(0, extra_args=["-limitancestorsize=10", "-datacarriersize=40000"])
tx_v3_parent_large2 = self.wallet.send_self_transfer(
from_node=node,
target_weight=parent_target_weight,
@ -261,7 +261,7 @@ class MempoolAcceptV3(BitcoinTestFramework):
assert_raises_rpc_error(-26, f"too-long-mempool-chain, exceeds ancestor size limit", node.sendrawtransaction, tx_v3_child_large2["hex"])
self.check_mempool([tx_v3_parent_large2["txid"]])
@cleanup(extra_args=["-datacarriersize=1000", "-acceptnonstdtxn=1"])
@cleanup(extra_args=["-datacarriersize=1000"])
def test_v3_ancestors_package(self):
self.log.info("Test that v3 ancestor limits are checked within the package")
node = self.nodes[0]
@ -304,7 +304,7 @@ class MempoolAcceptV3(BitcoinTestFramework):
result = node.testmempoolaccept([tx_v3_parent["hex"], tx_v3_child["hex"], tx_v3_grandchild["hex"]])
assert all([txresult["package-error"] == f"v3-violation, tx {tx_v3_grandchild['txid']} (wtxid={tx_v3_grandchild['wtxid']}) would have too many ancestors" for txresult in result])
@cleanup(extra_args=["-acceptnonstdtxn=1"])
@cleanup(extra_args=None)
def test_v3_ancestors_package_and_mempool(self):
"""
A v3 transaction in a package cannot have 2 v3 parents.
@ -334,7 +334,7 @@ class MempoolAcceptV3(BitcoinTestFramework):
assert_equal(result['package_msg'], f"v3-violation, tx {tx_child_violator['txid']} (wtxid={tx_child_violator['wtxid']}) would have too many ancestors")
self.check_mempool([tx_in_mempool["txid"]])
@cleanup(extra_args=["-acceptnonstdtxn=1"])
@cleanup(extra_args=None)
def test_sibling_eviction_package(self):
"""
When a transaction has a mempool sibling, it may be eligible for sibling eviction.
@ -410,7 +410,7 @@ class MempoolAcceptV3(BitcoinTestFramework):
assert_equal(result_package_cpfp["tx-results"][tx_sibling_3['wtxid']]['error'], expected_error_cpfp)
@cleanup(extra_args=["-datacarriersize=1000", "-acceptnonstdtxn=1"])
@cleanup(extra_args=["-datacarriersize=1000"])
def test_v3_package_inheritance(self):
self.log.info("Test that v3 inheritance is checked within package")
node = self.nodes[0]
@ -429,7 +429,7 @@ class MempoolAcceptV3(BitcoinTestFramework):
assert_equal(result['package_msg'], f"v3-violation, non-v3 tx {tx_v2_child['txid']} (wtxid={tx_v2_child['wtxid']}) cannot spend from v3 tx {tx_v3_parent['txid']} (wtxid={tx_v3_parent['wtxid']})")
self.check_mempool([])
@cleanup(extra_args=["-acceptnonstdtxn=1"])
@cleanup(extra_args=None)
def test_v3_in_testmempoolaccept(self):
node = self.nodes[0]
@ -479,7 +479,7 @@ class MempoolAcceptV3(BitcoinTestFramework):
test_accept_2children_with_in_mempool_parent = node.testmempoolaccept([tx_v3_child_1["hex"], tx_v3_child_2["hex"]])
assert all([result["package-error"] == expected_error_extra for result in test_accept_2children_with_in_mempool_parent])
@cleanup(extra_args=["-acceptnonstdtxn=1"])
@cleanup(extra_args=None)
def test_reorg_2child_rbf(self):
node = self.nodes[0]
self.log.info("Test that children of a v3 transaction can be replaced individually, even if there are multiple due to reorg")
@ -510,7 +510,7 @@ class MempoolAcceptV3(BitcoinTestFramework):
self.check_mempool([ancestor_tx["txid"], child_1_conflict["txid"], child_2["txid"]])
assert_equal(node.getmempoolentry(ancestor_tx["txid"])["descendantcount"], 3)
@cleanup(extra_args=["-acceptnonstdtxn=1"])
@cleanup(extra_args=None)
def test_v3_sibling_eviction(self):
self.log.info("Test sibling eviction for v3")
node = self.nodes[0]
@ -583,7 +583,7 @@ class MempoolAcceptV3(BitcoinTestFramework):
node.sendrawtransaction(tx_v3_child_3["hex"])
self.check_mempool(txids_v2_100 + [tx_v3_parent["txid"], tx_v3_child_3["txid"]])
@cleanup(extra_args=["-acceptnonstdtxn=1"])
@cleanup(extra_args=None)
def test_reorg_sibling_eviction_1p2c(self):
node = self.nodes[0]
self.log.info("Test that sibling eviction is not allowed when multiple siblings exist")

21
test/functional/wallet_create_tx.py
View file

@ -3,6 +3,9 @@
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
from test_framework.messages import (
tx_from_hex,
)
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import (
assert_equal,
@ -33,6 +36,7 @@ class CreateTxWalletTest(BitcoinTestFramework):
self.test_anti_fee_sniping()
self.test_tx_size_too_large()
self.test_create_too_long_mempool_chain()
self.test_version3()
def test_anti_fee_sniping(self):
self.log.info('Check that we have some (old) blocks and that anti-fee-sniping is disabled')
@ -106,6 +110,23 @@ class CreateTxWalletTest(BitcoinTestFramework):
test_wallet.unloadwallet()
def test_version3(self):
self.log.info('Check wallet does not create transactions with nVersion=3 yet')
wallet_rpc = self.nodes[0].get_wallet_rpc(self.default_wallet_name)
self.nodes[0].createwallet("v3")
wallet_v3 = self.nodes[0].get_wallet_rpc("v3")
tx_data = wallet_rpc.send(outputs=[{wallet_v3.getnewaddress(): 25}], options={"change_position": 0})
wallet_tx_data = wallet_rpc.gettransaction(tx_data["txid"])
tx_current_version = tx_from_hex(wallet_tx_data["hex"])
# While v3 transactions are standard, the CURRENT_VERSION is 2.
# This test can be removed if CURRENT_VERSION is changed, and replaced with tests that the
# wallet handles v3 rules properly.
assert_equal(tx_current_version.nVersion, 2)
wallet_v3.unloadwallet()
if __name__ == '__main__':
CreateTxWalletTest().main()