diff options
Diffstat (limited to 'test/functional/feature_rbf.py')
| -rwxr-xr-x | test/functional/feature_rbf.py | 234 |
1 files changed, 155 insertions, 79 deletions
diff --git a/test/functional/feature_rbf.py b/test/functional/feature_rbf.py index 344db5f652..ed944274e3 100755 --- a/test/functional/feature_rbf.py +++ b/test/functional/feature_rbf.py @@ -7,16 +7,22 @@ from decimal import Decimal from test_framework.blocktools import COINBASE_MATURITY -from test_framework.messages import COIN, COutPoint, CTransaction, CTxIn, CTxOut +from test_framework.messages import ( + BIP125_SEQUENCE_NUMBER, + COIN, + COutPoint, + CTransaction, + CTxIn, + CTxOut, +) from test_framework.script import CScript, OP_DROP from test_framework.test_framework import BitcoinTestFramework from test_framework.util import assert_equal, assert_raises_rpc_error, satoshi_round from test_framework.script_util import DUMMY_P2WPKH_SCRIPT, DUMMY_2_P2WPKH_SCRIPT +from test_framework.wallet import MiniWallet MAX_REPLACEMENT_LIMIT = 100 -def txToHex(tx): - return tx.serialize().hex() def make_utxo(node, amount, confirmed=True, scriptPubKey=DUMMY_P2WPKH_SCRIPT): """Create a txout with a given amount and scriptPubKey @@ -26,12 +32,12 @@ def make_utxo(node, amount, confirmed=True, scriptPubKey=DUMMY_P2WPKH_SCRIPT): confirmed - txouts created will be confirmed in the blockchain; unconfirmed otherwise. """ - fee = 1*COIN - while node.getbalance() < satoshi_round((amount + fee)/COIN): + fee = 1 * COIN + while node.getbalance() < satoshi_round((amount + fee) / COIN): node.generate(COINBASE_MATURITY) new_addr = node.getnewaddress() - txid = node.sendtoaddress(new_addr, satoshi_round((amount+fee)/COIN)) + txid = node.sendtoaddress(new_addr, satoshi_round((amount + fee) / COIN)) tx1 = node.getrawtransaction(txid, 1) txid = int(txid, 16) i, _ = next(filter(lambda vout: new_addr == vout[1]['scriptPubKey']['address'], enumerate(tx1['vout']))) @@ -41,7 +47,7 @@ def make_utxo(node, amount, confirmed=True, scriptPubKey=DUMMY_P2WPKH_SCRIPT): tx2.vout = [CTxOut(amount, scriptPubKey)] tx2.rehash() - signed_tx = node.signrawtransactionwithwallet(txToHex(tx2)) + signed_tx = node.signrawtransactionwithwallet(tx2.serialize().hex()) txid = node.sendrawtransaction(signed_tx['hex'], 0) @@ -78,10 +84,7 @@ class ReplaceByFeeTest(BitcoinTestFramework): self.skip_if_no_wallet() def run_test(self): - # Leave IBD - self.nodes[0].generate(1) - - make_utxo(self.nodes[0], 1*COIN) + make_utxo(self.nodes[0], 1 * COIN) # Ensure nodes are synced self.sync_all() @@ -116,11 +119,17 @@ class ReplaceByFeeTest(BitcoinTestFramework): self.log.info("Running test prioritised transactions...") self.test_prioritised_transactions() + self.log.info("Running test no inherited signaling...") + self.test_no_inherited_signaling() + + self.log.info("Running test replacement relay fee...") + self.test_replacement_relay_fee() + self.log.info("Passed") def test_simple_doublespend(self): """Simple doublespend""" - tx0_outpoint = make_utxo(self.nodes[0], int(1.1*COIN)) + tx0_outpoint = make_utxo(self.nodes[0], int(1.1 * COIN)) # make_utxo may have generated a bunch of blocks, so we need to sync # before we can spend the coins generated, or else the resulting @@ -130,7 +139,7 @@ class ReplaceByFeeTest(BitcoinTestFramework): tx1a = CTransaction() tx1a.vin = [CTxIn(tx0_outpoint, nSequence=0)] tx1a.vout = [CTxOut(1 * COIN, DUMMY_P2WPKH_SCRIPT)] - tx1a_hex = txToHex(tx1a) + tx1a_hex = tx1a.serialize().hex() tx1a_txid = self.nodes[0].sendrawtransaction(tx1a_hex, 0) self.sync_all() @@ -139,7 +148,7 @@ class ReplaceByFeeTest(BitcoinTestFramework): tx1b = CTransaction() tx1b.vin = [CTxIn(tx0_outpoint, nSequence=0)] tx1b.vout = [CTxOut(1 * COIN, DUMMY_2_P2WPKH_SCRIPT)] - tx1b_hex = txToHex(tx1b) + tx1b_hex = tx1b.serialize().hex() # This will raise an exception due to insufficient fee assert_raises_rpc_error(-26, "insufficient fee", self.nodes[0].sendrawtransaction, tx1b_hex, 0) @@ -148,7 +157,7 @@ class ReplaceByFeeTest(BitcoinTestFramework): tx1b = CTransaction() tx1b.vin = [CTxIn(tx0_outpoint, nSequence=0)] tx1b.vout = [CTxOut(int(0.9 * COIN), DUMMY_P2WPKH_SCRIPT)] - tx1b_hex = txToHex(tx1b) + tx1b_hex = tx1b.serialize().hex() # Works when enabled tx1b_txid = self.nodes[0].sendrawtransaction(tx1b_hex, 0) @@ -162,18 +171,18 @@ class ReplaceByFeeTest(BitcoinTestFramework): def test_doublespend_chain(self): """Doublespend of a long chain""" - initial_nValue = 50*COIN + initial_nValue = 50 * COIN tx0_outpoint = make_utxo(self.nodes[0], initial_nValue) prevout = tx0_outpoint remaining_value = initial_nValue chain_txids = [] - while remaining_value > 10*COIN: - remaining_value -= 1*COIN + while remaining_value > 10 * COIN: + remaining_value -= 1 * COIN tx = CTransaction() tx.vin = [CTxIn(prevout, nSequence=0)] tx.vout = [CTxOut(remaining_value, CScript([1, OP_DROP] * 15 + [1]))] - tx_hex = txToHex(tx) + tx_hex = tx.serialize().hex() txid = self.nodes[0].sendrawtransaction(tx_hex, 0) chain_txids.append(txid) prevout = COutPoint(int(txid, 16), 0) @@ -183,7 +192,7 @@ class ReplaceByFeeTest(BitcoinTestFramework): dbl_tx = CTransaction() dbl_tx.vin = [CTxIn(tx0_outpoint, nSequence=0)] dbl_tx.vout = [CTxOut(initial_nValue - 30 * COIN, DUMMY_P2WPKH_SCRIPT)] - dbl_tx_hex = txToHex(dbl_tx) + dbl_tx_hex = dbl_tx.serialize().hex() # This will raise an exception due to insufficient fee assert_raises_rpc_error(-26, "insufficient fee", self.nodes[0].sendrawtransaction, dbl_tx_hex, 0) @@ -192,7 +201,7 @@ class ReplaceByFeeTest(BitcoinTestFramework): dbl_tx = CTransaction() dbl_tx.vin = [CTxIn(tx0_outpoint, nSequence=0)] dbl_tx.vout = [CTxOut(1 * COIN, DUMMY_P2WPKH_SCRIPT)] - dbl_tx_hex = txToHex(dbl_tx) + dbl_tx_hex = dbl_tx.serialize().hex() self.nodes[0].sendrawtransaction(dbl_tx_hex, 0) mempool = self.nodes[0].getrawmempool() @@ -202,10 +211,10 @@ class ReplaceByFeeTest(BitcoinTestFramework): def test_doublespend_tree(self): """Doublespend of a big tree of transactions""" - initial_nValue = 50*COIN + initial_nValue = 50 * COIN tx0_outpoint = make_utxo(self.nodes[0], initial_nValue) - def branch(prevout, initial_value, max_txs, tree_width=5, fee=0.0001*COIN, _total_txs=None): + def branch(prevout, initial_value, max_txs, tree_width=5, fee=0.0001 * COIN, _total_txs=None): if _total_txs is None: _total_txs = [0] if _total_txs[0] >= max_txs: @@ -220,7 +229,7 @@ class ReplaceByFeeTest(BitcoinTestFramework): tx = CTransaction() tx.vin = [CTxIn(prevout, nSequence=0)] tx.vout = vout - tx_hex = txToHex(tx) + tx_hex = tx.serialize().hex() assert len(tx.serialize()) < 100000 txid = self.nodes[0].sendrawtransaction(tx_hex, 0) @@ -236,7 +245,7 @@ class ReplaceByFeeTest(BitcoinTestFramework): _total_txs=_total_txs): yield x - fee = int(0.0001*COIN) + fee = int(0.0001 * COIN) n = MAX_REPLACEMENT_LIMIT tree_txs = list(branch(tx0_outpoint, initial_nValue, n, fee=fee)) assert_equal(len(tree_txs), n) @@ -245,7 +254,7 @@ class ReplaceByFeeTest(BitcoinTestFramework): dbl_tx = CTransaction() dbl_tx.vin = [CTxIn(tx0_outpoint, nSequence=0)] dbl_tx.vout = [CTxOut(initial_nValue - fee * n, DUMMY_P2WPKH_SCRIPT)] - dbl_tx_hex = txToHex(dbl_tx) + dbl_tx_hex = dbl_tx.serialize().hex() # This will raise an exception due to insufficient fee assert_raises_rpc_error(-26, "insufficient fee", self.nodes[0].sendrawtransaction, dbl_tx_hex, 0) @@ -253,7 +262,7 @@ class ReplaceByFeeTest(BitcoinTestFramework): dbl_tx = CTransaction() dbl_tx.vin = [CTxIn(tx0_outpoint, nSequence=0)] dbl_tx.vout = [CTxOut(initial_nValue - fee * n - 1 * COIN, DUMMY_P2WPKH_SCRIPT)] - dbl_tx_hex = txToHex(dbl_tx) + dbl_tx_hex = dbl_tx.serialize().hex() self.nodes[0].sendrawtransaction(dbl_tx_hex, 0) mempool = self.nodes[0].getrawmempool() @@ -264,8 +273,8 @@ class ReplaceByFeeTest(BitcoinTestFramework): # Try again, but with more total transactions than the "max txs # double-spent at once" anti-DoS limit. - for n in (MAX_REPLACEMENT_LIMIT+1, MAX_REPLACEMENT_LIMIT*2): - fee = int(0.0001*COIN) + for n in (MAX_REPLACEMENT_LIMIT + 1, MAX_REPLACEMENT_LIMIT * 2): + fee = int(0.0001 * COIN) tx0_outpoint = make_utxo(self.nodes[0], initial_nValue) tree_txs = list(branch(tx0_outpoint, initial_nValue, n, fee=fee)) assert_equal(len(tree_txs), n) @@ -273,7 +282,7 @@ class ReplaceByFeeTest(BitcoinTestFramework): dbl_tx = CTransaction() dbl_tx.vin = [CTxIn(tx0_outpoint, nSequence=0)] dbl_tx.vout = [CTxOut(initial_nValue - 2 * fee * n, DUMMY_P2WPKH_SCRIPT)] - dbl_tx_hex = txToHex(dbl_tx) + dbl_tx_hex = dbl_tx.serialize().hex() # This will raise an exception assert_raises_rpc_error(-26, "too many potential replacements", self.nodes[0].sendrawtransaction, dbl_tx_hex, 0) @@ -283,33 +292,33 @@ class ReplaceByFeeTest(BitcoinTestFramework): def test_replacement_feeperkb(self): """Replacement requires fee-per-KB to be higher""" - tx0_outpoint = make_utxo(self.nodes[0], int(1.1*COIN)) + tx0_outpoint = make_utxo(self.nodes[0], int(1.1 * COIN)) tx1a = CTransaction() tx1a.vin = [CTxIn(tx0_outpoint, nSequence=0)] tx1a.vout = [CTxOut(1 * COIN, DUMMY_P2WPKH_SCRIPT)] - tx1a_hex = txToHex(tx1a) + tx1a_hex = tx1a.serialize().hex() self.nodes[0].sendrawtransaction(tx1a_hex, 0) # Higher fee, but the fee per KB is much lower, so the replacement is # rejected. tx1b = CTransaction() tx1b.vin = [CTxIn(tx0_outpoint, nSequence=0)] - tx1b.vout = [CTxOut(int(0.001*COIN), CScript([b'a'*999000]))] - tx1b_hex = txToHex(tx1b) + tx1b.vout = [CTxOut(int(0.001 * COIN), CScript([b'a' * 999000]))] + tx1b_hex = tx1b.serialize().hex() # This will raise an exception due to insufficient fee assert_raises_rpc_error(-26, "insufficient fee", self.nodes[0].sendrawtransaction, tx1b_hex, 0) def test_spends_of_conflicting_outputs(self): """Replacements that spend conflicting tx outputs are rejected""" - utxo1 = make_utxo(self.nodes[0], int(1.2*COIN)) - utxo2 = make_utxo(self.nodes[0], 3*COIN) + utxo1 = make_utxo(self.nodes[0], int(1.2 * COIN)) + utxo2 = make_utxo(self.nodes[0], 3 * COIN) tx1a = CTransaction() tx1a.vin = [CTxIn(utxo1, nSequence=0)] tx1a.vout = [CTxOut(int(1.1 * COIN), DUMMY_P2WPKH_SCRIPT)] - tx1a_hex = txToHex(tx1a) + tx1a_hex = tx1a.serialize().hex() tx1a_txid = self.nodes[0].sendrawtransaction(tx1a_hex, 0) tx1a_txid = int(tx1a_txid, 16) @@ -319,7 +328,7 @@ class ReplaceByFeeTest(BitcoinTestFramework): tx2.vin = [CTxIn(utxo1, nSequence=0), CTxIn(utxo2, nSequence=0)] tx2.vin.append(CTxIn(COutPoint(tx1a_txid, 0), nSequence=0)) tx2.vout = tx1a.vout - tx2_hex = txToHex(tx2) + tx2_hex = tx2.serialize().hex() # This will raise an exception assert_raises_rpc_error(-26, "bad-txns-spends-conflicting-tx", self.nodes[0].sendrawtransaction, tx2_hex, 0) @@ -328,7 +337,7 @@ class ReplaceByFeeTest(BitcoinTestFramework): tx1b = CTransaction() tx1b.vin = [CTxIn(COutPoint(tx1a_txid, 0), nSequence=0)] tx1b.vout = [CTxOut(1 * COIN, DUMMY_P2WPKH_SCRIPT)] - tx1b_hex = txToHex(tx1b) + tx1b_hex = tx1b.serialize().hex() tx1b_txid = self.nodes[0].sendrawtransaction(tx1b_hex, 0) tx1b_txid = int(tx1b_txid, 16) @@ -336,26 +345,26 @@ class ReplaceByFeeTest(BitcoinTestFramework): tx2.vin = [CTxIn(utxo1, nSequence=0), CTxIn(utxo2, nSequence=0), CTxIn(COutPoint(tx1b_txid, 0))] tx2.vout = tx1a.vout - tx2_hex = txToHex(tx2) + tx2_hex = tx2.serialize().hex() # This will raise an exception assert_raises_rpc_error(-26, "bad-txns-spends-conflicting-tx", self.nodes[0].sendrawtransaction, tx2_hex, 0) def test_new_unconfirmed_inputs(self): """Replacements that add new unconfirmed inputs are rejected""" - confirmed_utxo = make_utxo(self.nodes[0], int(1.1*COIN)) - unconfirmed_utxo = make_utxo(self.nodes[0], int(0.1*COIN), False) + confirmed_utxo = make_utxo(self.nodes[0], int(1.1 * COIN)) + unconfirmed_utxo = make_utxo(self.nodes[0], int(0.1 * COIN), False) tx1 = CTransaction() tx1.vin = [CTxIn(confirmed_utxo)] tx1.vout = [CTxOut(1 * COIN, DUMMY_P2WPKH_SCRIPT)] - tx1_hex = txToHex(tx1) + tx1_hex = tx1.serialize().hex() self.nodes[0].sendrawtransaction(tx1_hex, 0) tx2 = CTransaction() tx2.vin = [CTxIn(confirmed_utxo), CTxIn(unconfirmed_utxo)] tx2.vout = tx1.vout - tx2_hex = txToHex(tx2) + tx2_hex = tx2.serialize().hex() # This will raise an exception assert_raises_rpc_error(-26, "replacement-adds-unconfirmed", self.nodes[0].sendrawtransaction, tx2_hex, 0) @@ -366,42 +375,42 @@ class ReplaceByFeeTest(BitcoinTestFramework): # transactions # Start by creating a single transaction with many outputs - initial_nValue = 10*COIN + initial_nValue = 10 * COIN utxo = make_utxo(self.nodes[0], initial_nValue) - fee = int(0.0001*COIN) - split_value = int((initial_nValue-fee)/(MAX_REPLACEMENT_LIMIT+1)) + fee = int(0.0001 * COIN) + split_value = int((initial_nValue - fee) / (MAX_REPLACEMENT_LIMIT + 1)) outputs = [] - for _ in range(MAX_REPLACEMENT_LIMIT+1): + for _ in range(MAX_REPLACEMENT_LIMIT + 1): outputs.append(CTxOut(split_value, CScript([1]))) splitting_tx = CTransaction() splitting_tx.vin = [CTxIn(utxo, nSequence=0)] splitting_tx.vout = outputs - splitting_tx_hex = txToHex(splitting_tx) + splitting_tx_hex = splitting_tx.serialize().hex() txid = self.nodes[0].sendrawtransaction(splitting_tx_hex, 0) txid = int(txid, 16) # Now spend each of those outputs individually - for i in range(MAX_REPLACEMENT_LIMIT+1): + for i in range(MAX_REPLACEMENT_LIMIT + 1): tx_i = CTransaction() tx_i.vin = [CTxIn(COutPoint(txid, i), nSequence=0)] tx_i.vout = [CTxOut(split_value - fee, DUMMY_P2WPKH_SCRIPT)] - tx_i_hex = txToHex(tx_i) + tx_i_hex = tx_i.serialize().hex() self.nodes[0].sendrawtransaction(tx_i_hex, 0) # Now create doublespend of the whole lot; should fail. # Need a big enough fee to cover all spending transactions and have # a higher fee rate - double_spend_value = (split_value-100*fee)*(MAX_REPLACEMENT_LIMIT+1) + double_spend_value = (split_value - 100 * fee) * (MAX_REPLACEMENT_LIMIT + 1) inputs = [] - for i in range(MAX_REPLACEMENT_LIMIT+1): + for i in range(MAX_REPLACEMENT_LIMIT + 1): inputs.append(CTxIn(COutPoint(txid, i), nSequence=0)) double_tx = CTransaction() double_tx.vin = inputs double_tx.vout = [CTxOut(double_spend_value, CScript([b'a']))] - double_tx_hex = txToHex(double_tx) + double_tx_hex = double_tx.serialize().hex() # This will raise an exception assert_raises_rpc_error(-26, "too many potential replacements", self.nodes[0].sendrawtransaction, double_tx_hex, 0) @@ -410,18 +419,18 @@ class ReplaceByFeeTest(BitcoinTestFramework): double_tx = CTransaction() double_tx.vin = inputs[0:-1] double_tx.vout = [CTxOut(double_spend_value, CScript([b'a']))] - double_tx_hex = txToHex(double_tx) + double_tx_hex = double_tx.serialize().hex() self.nodes[0].sendrawtransaction(double_tx_hex, 0) def test_opt_in(self): """Replacing should only work if orig tx opted in""" - tx0_outpoint = make_utxo(self.nodes[0], int(1.1*COIN)) + tx0_outpoint = make_utxo(self.nodes[0], int(1.1 * COIN)) # Create a non-opting in transaction tx1a = CTransaction() tx1a.vin = [CTxIn(tx0_outpoint, nSequence=0xffffffff)] tx1a.vout = [CTxOut(1 * COIN, DUMMY_P2WPKH_SCRIPT)] - tx1a_hex = txToHex(tx1a) + tx1a_hex = tx1a.serialize().hex() tx1a_txid = self.nodes[0].sendrawtransaction(tx1a_hex, 0) # This transaction isn't shown as replaceable @@ -431,25 +440,25 @@ class ReplaceByFeeTest(BitcoinTestFramework): tx1b = CTransaction() tx1b.vin = [CTxIn(tx0_outpoint, nSequence=0)] tx1b.vout = [CTxOut(int(0.9 * COIN), DUMMY_P2WPKH_SCRIPT)] - tx1b_hex = txToHex(tx1b) + tx1b_hex = tx1b.serialize().hex() # This will raise an exception assert_raises_rpc_error(-26, "txn-mempool-conflict", self.nodes[0].sendrawtransaction, tx1b_hex, 0) - tx1_outpoint = make_utxo(self.nodes[0], int(1.1*COIN)) + tx1_outpoint = make_utxo(self.nodes[0], int(1.1 * COIN)) # Create a different non-opting in transaction tx2a = CTransaction() tx2a.vin = [CTxIn(tx1_outpoint, nSequence=0xfffffffe)] tx2a.vout = [CTxOut(1 * COIN, DUMMY_P2WPKH_SCRIPT)] - tx2a_hex = txToHex(tx2a) + tx2a_hex = tx2a.serialize().hex() tx2a_txid = self.nodes[0].sendrawtransaction(tx2a_hex, 0) # Still shouldn't be able to double-spend tx2b = CTransaction() tx2b.vin = [CTxIn(tx1_outpoint, nSequence=0)] tx2b.vout = [CTxOut(int(0.9 * COIN), DUMMY_P2WPKH_SCRIPT)] - tx2b_hex = txToHex(tx2b) + tx2b_hex = tx2b.serialize().hex() # This will raise an exception assert_raises_rpc_error(-26, "txn-mempool-conflict", self.nodes[0].sendrawtransaction, tx2b_hex, 0) @@ -464,8 +473,8 @@ class ReplaceByFeeTest(BitcoinTestFramework): tx3a = CTransaction() tx3a.vin = [CTxIn(COutPoint(tx1a_txid, 0), nSequence=0xffffffff), CTxIn(COutPoint(tx2a_txid, 0), nSequence=0xfffffffd)] - tx3a.vout = [CTxOut(int(0.9*COIN), CScript([b'c'])), CTxOut(int(0.9*COIN), CScript([b'd']))] - tx3a_hex = txToHex(tx3a) + tx3a.vout = [CTxOut(int(0.9 * COIN), CScript([b'c'])), CTxOut(int(0.9 * COIN), CScript([b'd']))] + tx3a_hex = tx3a.serialize().hex() tx3a_txid = self.nodes[0].sendrawtransaction(tx3a_hex, 0) @@ -475,12 +484,12 @@ class ReplaceByFeeTest(BitcoinTestFramework): tx3b = CTransaction() tx3b.vin = [CTxIn(COutPoint(tx1a_txid, 0), nSequence=0)] tx3b.vout = [CTxOut(int(0.5 * COIN), DUMMY_P2WPKH_SCRIPT)] - tx3b_hex = txToHex(tx3b) + tx3b_hex = tx3b.serialize().hex() tx3c = CTransaction() tx3c.vin = [CTxIn(COutPoint(tx2a_txid, 0), nSequence=0)] tx3c.vout = [CTxOut(int(0.5 * COIN), DUMMY_P2WPKH_SCRIPT)] - tx3c_hex = txToHex(tx3c) + tx3c_hex = tx3c.serialize().hex() self.nodes[0].sendrawtransaction(tx3b_hex, 0) # If tx3b was accepted, tx3c won't look like a replacement, @@ -492,25 +501,25 @@ class ReplaceByFeeTest(BitcoinTestFramework): # correctly used by replacement logic # 1. Check that feeperkb uses modified fees - tx0_outpoint = make_utxo(self.nodes[0], int(1.1*COIN)) + tx0_outpoint = make_utxo(self.nodes[0], int(1.1 * COIN)) tx1a = CTransaction() tx1a.vin = [CTxIn(tx0_outpoint, nSequence=0)] tx1a.vout = [CTxOut(1 * COIN, DUMMY_P2WPKH_SCRIPT)] - tx1a_hex = txToHex(tx1a) + tx1a_hex = tx1a.serialize().hex() tx1a_txid = self.nodes[0].sendrawtransaction(tx1a_hex, 0) # Higher fee, but the actual fee per KB is much lower. tx1b = CTransaction() tx1b.vin = [CTxIn(tx0_outpoint, nSequence=0)] - tx1b.vout = [CTxOut(int(0.001*COIN), CScript([b'a'*740000]))] - tx1b_hex = txToHex(tx1b) + tx1b.vout = [CTxOut(int(0.001 * COIN), CScript([b'a' * 740000]))] + tx1b_hex = tx1b.serialize().hex() # Verify tx1b cannot replace tx1a. assert_raises_rpc_error(-26, "insufficient fee", self.nodes[0].sendrawtransaction, tx1b_hex, 0) # Use prioritisetransaction to set tx1a's fee to 0. - self.nodes[0].prioritisetransaction(txid=tx1a_txid, fee_delta=int(-0.1*COIN)) + self.nodes[0].prioritisetransaction(txid=tx1a_txid, fee_delta=int(-0.1 * COIN)) # Now tx1b should be able to replace tx1a tx1b_txid = self.nodes[0].sendrawtransaction(tx1b_hex, 0) @@ -518,12 +527,12 @@ class ReplaceByFeeTest(BitcoinTestFramework): assert tx1b_txid in self.nodes[0].getrawmempool() # 2. Check that absolute fee checks use modified fee. - tx1_outpoint = make_utxo(self.nodes[0], int(1.1*COIN)) + tx1_outpoint = make_utxo(self.nodes[0], int(1.1 * COIN)) tx2a = CTransaction() tx2a.vin = [CTxIn(tx1_outpoint, nSequence=0)] tx2a.vout = [CTxOut(1 * COIN, DUMMY_P2WPKH_SCRIPT)] - tx2a_hex = txToHex(tx2a) + tx2a_hex = tx2a.serialize().hex() self.nodes[0].sendrawtransaction(tx2a_hex, 0) # Lower fee, but we'll prioritise it @@ -531,13 +540,13 @@ class ReplaceByFeeTest(BitcoinTestFramework): tx2b.vin = [CTxIn(tx1_outpoint, nSequence=0)] tx2b.vout = [CTxOut(int(1.01 * COIN), DUMMY_P2WPKH_SCRIPT)] tx2b.rehash() - tx2b_hex = txToHex(tx2b) + tx2b_hex = tx2b.serialize().hex() # Verify tx2b cannot replace tx2a. assert_raises_rpc_error(-26, "insufficient fee", self.nodes[0].sendrawtransaction, tx2b_hex, 0) # Now prioritise tx2b to have a higher modified fee - self.nodes[0].prioritisetransaction(txid=tx2b.hash, fee_delta=int(0.1*COIN)) + self.nodes[0].prioritisetransaction(txid=tx2b.hash, fee_delta=int(0.1 * COIN)) # tx2b should now be accepted tx2b_txid = self.nodes[0].sendrawtransaction(tx2b_hex, 0) @@ -547,11 +556,11 @@ class ReplaceByFeeTest(BitcoinTestFramework): def test_rpc(self): us0 = self.nodes[0].listunspent()[0] ins = [us0] - outs = {self.nodes[0].getnewaddress() : Decimal(1.0000000)} + outs = {self.nodes[0].getnewaddress(): Decimal(1.0000000)} rawtx0 = self.nodes[0].createrawtransaction(ins, outs, 0, True) rawtx1 = self.nodes[0].createrawtransaction(ins, outs, 0, False) - json0 = self.nodes[0].decoderawtransaction(rawtx0) - json1 = self.nodes[0].decoderawtransaction(rawtx1) + json0 = self.nodes[0].decoderawtransaction(rawtx0) + json1 = self.nodes[0].decoderawtransaction(rawtx1) assert_equal(json0["vin"][0]["sequence"], 4294967293) assert_equal(json1["vin"][0]["sequence"], 4294967295) @@ -559,10 +568,77 @@ class ReplaceByFeeTest(BitcoinTestFramework): frawtx2a = self.nodes[0].fundrawtransaction(rawtx2, {"replaceable": True}) frawtx2b = self.nodes[0].fundrawtransaction(rawtx2, {"replaceable": False}) - json0 = self.nodes[0].decoderawtransaction(frawtx2a['hex']) - json1 = self.nodes[0].decoderawtransaction(frawtx2b['hex']) + json0 = self.nodes[0].decoderawtransaction(frawtx2a['hex']) + json1 = self.nodes[0].decoderawtransaction(frawtx2b['hex']) assert_equal(json0["vin"][0]["sequence"], 4294967293) assert_equal(json1["vin"][0]["sequence"], 4294967294) + def test_no_inherited_signaling(self): + wallet = MiniWallet(self.nodes[0]) + wallet.scan_blocks(start=76, num=1) + confirmed_utxo = wallet.get_utxo() + + # Create an explicitly opt-in parent transaction + optin_parent_tx = wallet.send_self_transfer( + from_node=self.nodes[0], + utxo_to_spend=confirmed_utxo, + sequence=BIP125_SEQUENCE_NUMBER, + fee_rate=Decimal('0.01'), + ) + assert_equal(True, self.nodes[0].getmempoolentry(optin_parent_tx['txid'])['bip125-replaceable']) + + replacement_parent_tx = wallet.create_self_transfer( + from_node=self.nodes[0], + utxo_to_spend=confirmed_utxo, + sequence=BIP125_SEQUENCE_NUMBER, + fee_rate=Decimal('0.02'), + ) + + # Test if parent tx can be replaced. + res = self.nodes[0].testmempoolaccept(rawtxs=[replacement_parent_tx['hex']])[0] + + # Parent can be replaced. + assert_equal(res['allowed'], True) + + # Create an opt-out child tx spending the opt-in parent + parent_utxo = wallet.get_utxo(txid=optin_parent_tx['txid']) + optout_child_tx = wallet.send_self_transfer( + from_node=self.nodes[0], + utxo_to_spend=parent_utxo, + sequence=0xffffffff, + fee_rate=Decimal('0.01'), + ) + + # Reports true due to inheritance + assert_equal(True, self.nodes[0].getmempoolentry(optout_child_tx['txid'])['bip125-replaceable']) + + replacement_child_tx = wallet.create_self_transfer( + from_node=self.nodes[0], + utxo_to_spend=parent_utxo, + sequence=0xffffffff, + fee_rate=Decimal('0.02'), + mempool_valid=False, + ) + + # Broadcast replacement child tx + # BIP 125 : + # 1. The original transactions signal replaceability explicitly or through inheritance as described in the above + # Summary section. + # The original transaction (`optout_child_tx`) doesn't signal RBF but its parent (`optin_parent_tx`) does. + # The replacement transaction (`replacement_child_tx`) should be able to replace the original transaction. + # See CVE-2021-31876 for further explanations. + assert_equal(True, self.nodes[0].getmempoolentry(optin_parent_tx['txid'])['bip125-replaceable']) + assert_raises_rpc_error(-26, 'txn-mempool-conflict', self.nodes[0].sendrawtransaction, replacement_child_tx["hex"], 0) + + def test_replacement_relay_fee(self): + wallet = MiniWallet(self.nodes[0]) + wallet.scan_blocks(start=77, num=1) + tx = wallet.send_self_transfer(from_node=self.nodes[0])['tx'] + + # Higher fee, higher feerate, different txid, but the replacement does not provide a relay + # fee conforming to node's `incrementalrelayfee` policy of 1000 sat per KB. + tx.vout[0].nValue -= 1 + assert_raises_rpc_error(-26, "insufficient fee", self.nodes[0].sendrawtransaction, tx.serialize().hex()) + if __name__ == '__main__': ReplaceByFeeTest().main() |