diff options
Diffstat (limited to 'test/functional/feature_rbf.py')
| -rwxr-xr-x | test/functional/feature_rbf.py | 484 |
1 files changed, 280 insertions, 204 deletions
diff --git a/test/functional/feature_rbf.py b/test/functional/feature_rbf.py index f0ed914461..40ad2137d4 100755 --- a/test/functional/feature_rbf.py +++ b/test/functional/feature_rbf.py @@ -4,44 +4,36 @@ # file COPYING or http://www.opensource.org/licenses/mit-license.php. """Test the RBF code.""" -from copy import deepcopy from decimal import Decimal from test_framework.messages import ( BIP125_SEQUENCE_NUMBER, COIN, - COutPoint, - CTransaction, - CTxIn, - CTxOut, SEQUENCE_FINAL, ) -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, ) -from test_framework.script_util import ( - DUMMY_P2WPKH_SCRIPT, - DUMMY_2_P2WPKH_SCRIPT, -) from test_framework.wallet import MiniWallet from test_framework.address import ADDRESS_BCRT1_UNSPENDABLE MAX_REPLACEMENT_LIMIT = 100 class ReplaceByFeeTest(BitcoinTestFramework): def set_test_params(self): - self.num_nodes = 1 + self.num_nodes = 2 self.extra_args = [ [ - "-acceptnonstdtxn=1", "-maxorphantx=1000", "-limitancestorcount=50", "-limitancestorsize=101", "-limitdescendantcount=200", "-limitdescendantsize=101", ], + # second node has default mempool parameters + [ + ], ] self.supports_cli = False @@ -73,6 +65,9 @@ class ReplaceByFeeTest(BitcoinTestFramework): self.log.info("Running test too many replacements...") self.test_too_many_replacements() + self.log.info("Running test too many replacements using default mempool params...") + self.test_too_many_replacements_with_default_mempool_params() + self.log.info("Running test opt-in...") self.test_opt_in() @@ -90,15 +85,14 @@ class ReplaceByFeeTest(BitcoinTestFramework): self.log.info("Passed") - def make_utxo(self, node, amount, confirmed=True, scriptPubKey=DUMMY_P2WPKH_SCRIPT): + def make_utxo(self, node, amount, *, confirmed=True, scriptPubKey=None): """Create a txout with a given amount and scriptPubKey - confirmed - txouts created will be confirmed in the blockchain; + confirmed - txout created will be confirmed in the blockchain; unconfirmed otherwise. """ - txid, n = self.wallet.send_to(from_node=node, scriptPubKey=scriptPubKey, amount=amount) + txid, n = self.wallet.send_to(from_node=node, scriptPubKey=scriptPubKey or self.wallet.get_scriptPubKey(), amount=amount) - # If requested, ensure txouts are confirmed. if confirmed: mempool_size = len(node.getrawmempool()) while mempool_size > 0: @@ -109,30 +103,24 @@ class ReplaceByFeeTest(BitcoinTestFramework): assert new_size < mempool_size mempool_size = new_size - return COutPoint(int(txid, 16), n) + return self.wallet.get_utxo(txid=txid, vout=n) def test_simple_doublespend(self): """Simple doublespend""" # we use MiniWallet to create a transaction template with inputs correctly set, # and modify the output (amount, scriptPubKey) according to our needs - tx_template = self.wallet.create_self_transfer()['tx'] - - tx1a = deepcopy(tx_template) - tx1a.vout = [CTxOut(1 * COIN, DUMMY_P2WPKH_SCRIPT)] - tx1a_hex = tx1a.serialize().hex() - tx1a_txid = self.nodes[0].sendrawtransaction(tx1a_hex, 0) + tx = self.wallet.create_self_transfer()["tx"] + tx1a_txid = self.nodes[0].sendrawtransaction(tx.serialize().hex()) # Should fail because we haven't changed the fee - tx1b = deepcopy(tx_template) - tx1b.vout = [CTxOut(1 * COIN, DUMMY_2_P2WPKH_SCRIPT)] - tx1b_hex = tx1b.serialize().hex() + tx.vout[0].scriptPubKey[-1] ^= 1 # This will raise an exception due to insufficient fee - assert_raises_rpc_error(-26, "insufficient fee", self.nodes[0].sendrawtransaction, tx1b_hex, 0) + assert_raises_rpc_error(-26, "insufficient fee", self.nodes[0].sendrawtransaction, tx.serialize().hex(), 0) # Extra 0.1 BTC fee - tx1b.vout[0].nValue -= int(0.1 * COIN) - tx1b_hex = tx1b.serialize().hex() + tx.vout[0].nValue -= int(0.1 * COIN) + tx1b_hex = tx.serialize().hex() # Works when enabled tx1b_txid = self.nodes[0].sendrawtransaction(tx1b_hex, 0) @@ -154,28 +142,28 @@ class ReplaceByFeeTest(BitcoinTestFramework): chain_txids = [] while remaining_value > 1 * COIN: remaining_value -= int(0.1 * COIN) - tx = CTransaction() - tx.vin = [CTxIn(prevout, nSequence=0)] - tx.vout = [CTxOut(remaining_value, CScript([1, OP_DROP] * 15 + [1]))] - tx_hex = tx.serialize().hex() - txid = self.nodes[0].sendrawtransaction(tx_hex, 0) - chain_txids.append(txid) - prevout = COutPoint(int(txid, 16), 0) + prevout = self.wallet.send_self_transfer( + from_node=self.nodes[0], + utxo_to_spend=prevout, + sequence=0, + fee=Decimal("0.1"), + )["new_utxo"] + chain_txids.append(prevout["txid"]) # Whether the double-spend is allowed is evaluated by including all # child fees - 4 BTC - so this attempt is rejected. - dbl_tx = CTransaction() - dbl_tx.vin = [CTxIn(tx0_outpoint, nSequence=0)] - dbl_tx.vout = [CTxOut(initial_nValue - 3 * COIN, DUMMY_P2WPKH_SCRIPT)] + dbl_tx = self.wallet.create_self_transfer( + utxo_to_spend=tx0_outpoint, + sequence=0, + fee=Decimal("3"), + )["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) # Accepted with sufficient fee - dbl_tx = CTransaction() - dbl_tx.vin = [CTxIn(tx0_outpoint, nSequence=0)] - dbl_tx.vout = [CTxOut(int(0.1 * COIN), DUMMY_P2WPKH_SCRIPT)] + dbl_tx.vout[0].nValue = int(0.1 * COIN) dbl_tx_hex = dbl_tx.serialize().hex() self.nodes[0].sendrawtransaction(dbl_tx_hex, 0) @@ -199,22 +187,19 @@ class ReplaceByFeeTest(BitcoinTestFramework): if txout_value < fee: return - vout = [CTxOut(txout_value, CScript([i+1])) - for i in range(tree_width)] - tx = CTransaction() - tx.vin = [CTxIn(prevout, nSequence=0)] - tx.vout = vout - tx_hex = tx.serialize().hex() + tx = self.wallet.send_self_transfer_multi( + utxos_to_spend=[prevout], + from_node=self.nodes[0], + sequence=0, + num_outputs=tree_width, + amount_per_output=txout_value, + ) - assert len(tx.serialize()) < 100000 - txid = self.nodes[0].sendrawtransaction(tx_hex, 0) - yield tx + yield tx["txid"] _total_txs[0] += 1 - txid = int(txid, 16) - - for i, txout in enumerate(tx.vout): - for x in branch(COutPoint(txid, i), txout_value, + for utxo in tx["new_utxos"]: + for x in branch(utxo, txout_value, max_txs, tree_width=tree_width, fee=fee, _total_txs=_total_txs): @@ -226,25 +211,26 @@ class ReplaceByFeeTest(BitcoinTestFramework): assert_equal(len(tree_txs), n) # Attempt double-spend, will fail because too little fee paid - 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 = dbl_tx.serialize().hex() + dbl_tx_hex = self.wallet.create_self_transfer( + utxo_to_spend=tx0_outpoint, + sequence=0, + fee=(Decimal(fee) / COIN) * n, + )["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) # 0.1 BTC fee is enough - dbl_tx = CTransaction() - dbl_tx.vin = [CTxIn(tx0_outpoint, nSequence=0)] - dbl_tx.vout = [CTxOut(initial_nValue - fee * n - int(0.1 * COIN), DUMMY_P2WPKH_SCRIPT)] - dbl_tx_hex = dbl_tx.serialize().hex() + dbl_tx_hex = self.wallet.create_self_transfer( + utxo_to_spend=tx0_outpoint, + sequence=0, + fee=(Decimal(fee) / COIN) * n + Decimal("0.1"), + )["hex"] self.nodes[0].sendrawtransaction(dbl_tx_hex, 0) mempool = self.nodes[0].getrawmempool() - for tx in tree_txs: - tx.rehash() - assert tx.hash not in mempool + for txid in tree_txs: + assert txid not in mempool # Try again, but with more total transactions than the "max txs # double-spent at once" anti-DoS limit. @@ -254,33 +240,36 @@ class ReplaceByFeeTest(BitcoinTestFramework): tree_txs = list(branch(tx0_outpoint, initial_nValue, n, fee=fee)) assert_equal(len(tree_txs), n) - 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 = dbl_tx.serialize().hex() + dbl_tx_hex = self.wallet.create_self_transfer( + utxo_to_spend=tx0_outpoint, + sequence=0, + fee=2 * (Decimal(fee) / COIN) * n, + )["hex"] # This will raise an exception assert_raises_rpc_error(-26, "too many potential replacements", self.nodes[0].sendrawtransaction, dbl_tx_hex, 0) - for tx in tree_txs: - tx.rehash() - self.nodes[0].getrawtransaction(tx.hash) + for txid in tree_txs: + self.nodes[0].getrawtransaction(txid) def test_replacement_feeperkb(self): """Replacement requires fee-per-KB to be higher""" tx0_outpoint = self.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 = tx1a.serialize().hex() - self.nodes[0].sendrawtransaction(tx1a_hex, 0) + self.wallet.send_self_transfer( + from_node=self.nodes[0], + utxo_to_spend=tx0_outpoint, + sequence=0, + fee=Decimal("0.1"), + ) # 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 = tx1b.serialize().hex() + tx1b_hex = self.wallet.create_self_transfer_multi( + utxos_to_spend=[tx0_outpoint], + sequence=0, + num_outputs=100, + amount_per_output=1000, + )["hex"] # This will raise an exception due to insufficient fee assert_raises_rpc_error(-26, "insufficient fee", self.nodes[0].sendrawtransaction, tx1b_hex, 0) @@ -290,37 +279,36 @@ class ReplaceByFeeTest(BitcoinTestFramework): utxo1 = self.make_utxo(self.nodes[0], int(1.2 * COIN)) utxo2 = self.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 = tx1a.serialize().hex() - tx1a_txid = self.nodes[0].sendrawtransaction(tx1a_hex, 0) - - tx1a_txid = int(tx1a_txid, 16) + tx1a_utxo = self.wallet.send_self_transfer( + from_node=self.nodes[0], + utxo_to_spend=utxo1, + sequence=0, + fee=Decimal("0.1"), + )["new_utxo"] # Direct spend an output of the transaction we're replacing. - tx2 = CTransaction() - 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 = tx2.serialize().hex() + tx2_hex = self.wallet.create_self_transfer_multi( + utxos_to_spend=[utxo1, utxo2, tx1a_utxo], + sequence=0, + amount_per_output=int(COIN * tx1a_utxo["value"]), + )["hex"] # This will raise an exception assert_raises_rpc_error(-26, "bad-txns-spends-conflicting-tx", self.nodes[0].sendrawtransaction, tx2_hex, 0) # Spend tx1a's output to test the indirect case. - tx1b = CTransaction() - tx1b.vin = [CTxIn(COutPoint(tx1a_txid, 0), nSequence=0)] - tx1b.vout = [CTxOut(1 * COIN, DUMMY_P2WPKH_SCRIPT)] - tx1b_hex = tx1b.serialize().hex() - tx1b_txid = self.nodes[0].sendrawtransaction(tx1b_hex, 0) - tx1b_txid = int(tx1b_txid, 16) + tx1b_utxo = self.wallet.send_self_transfer( + from_node=self.nodes[0], + utxo_to_spend=tx1a_utxo, + sequence=0, + fee=Decimal("0.1"), + )["new_utxo"] - tx2 = CTransaction() - tx2.vin = [CTxIn(utxo1, nSequence=0), CTxIn(utxo2, nSequence=0), - CTxIn(COutPoint(tx1b_txid, 0))] - tx2.vout = tx1a.vout - tx2_hex = tx2.serialize().hex() + tx2_hex = self.wallet.create_self_transfer_multi( + utxos_to_spend=[utxo1, utxo2, tx1b_utxo], + sequence=0, + amount_per_output=int(COIN * tx1a_utxo["value"]), + )["hex"] # This will raise an exception assert_raises_rpc_error(-26, "bad-txns-spends-conflicting-tx", self.nodes[0].sendrawtransaction, tx2_hex, 0) @@ -328,18 +316,20 @@ class ReplaceByFeeTest(BitcoinTestFramework): def test_new_unconfirmed_inputs(self): """Replacements that add new unconfirmed inputs are rejected""" confirmed_utxo = self.make_utxo(self.nodes[0], int(1.1 * COIN)) - unconfirmed_utxo = self.make_utxo(self.nodes[0], int(0.1 * COIN), False) + unconfirmed_utxo = self.make_utxo(self.nodes[0], int(0.1 * COIN), confirmed=False) - tx1 = CTransaction() - tx1.vin = [CTxIn(confirmed_utxo)] - tx1.vout = [CTxOut(1 * COIN, DUMMY_P2WPKH_SCRIPT)] - tx1_hex = tx1.serialize().hex() - self.nodes[0].sendrawtransaction(tx1_hex, 0) + self.wallet.send_self_transfer( + from_node=self.nodes[0], + utxo_to_spend=confirmed_utxo, + sequence=0, + fee=Decimal("0.1"), + ) - tx2 = CTransaction() - tx2.vin = [CTxIn(confirmed_utxo), CTxIn(unconfirmed_utxo)] - tx2.vout = tx1.vout - tx2_hex = tx2.serialize().hex() + tx2_hex = self.wallet.create_self_transfer_multi( + utxos_to_spend=[confirmed_utxo, unconfirmed_utxo], + sequence=0, + amount_per_output=1 * COIN, + )["hex"] # This will raise an exception assert_raises_rpc_error(-26, "replacement-adds-unconfirmed", self.nodes[0].sendrawtransaction, tx2_hex, 0) @@ -355,67 +345,149 @@ class ReplaceByFeeTest(BitcoinTestFramework): fee = int(0.0001 * COIN) split_value = int((initial_nValue - fee) / (MAX_REPLACEMENT_LIMIT + 1)) - outputs = [] - 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 = splitting_tx.serialize().hex() - - txid = self.nodes[0].sendrawtransaction(splitting_tx_hex, 0) - txid = int(txid, 16) + splitting_tx_utxos = self.wallet.send_self_transfer_multi( + from_node=self.nodes[0], + utxos_to_spend=[utxo], + sequence=0, + num_outputs=MAX_REPLACEMENT_LIMIT + 1, + amount_per_output=split_value, + )["new_utxos"] # Now spend each of those outputs individually - 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 = tx_i.serialize().hex() - self.nodes[0].sendrawtransaction(tx_i_hex, 0) + for utxo in splitting_tx_utxos: + self.wallet.send_self_transfer( + from_node=self.nodes[0], + utxo_to_spend=utxo, + sequence=0, + fee=Decimal(fee) / COIN, + ) # 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) - inputs = [] - 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 = self.wallet.create_self_transfer_multi( + utxos_to_spend=splitting_tx_utxos, + sequence=0, + amount_per_output=double_spend_value, + )["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) # If we remove an input, it should pass - double_tx = CTransaction() - double_tx.vin = inputs[0:-1] - double_tx.vout = [CTxOut(double_spend_value, CScript([b'a']))] + double_tx.vin.pop() double_tx_hex = double_tx.serialize().hex() self.nodes[0].sendrawtransaction(double_tx_hex, 0) + def test_too_many_replacements_with_default_mempool_params(self): + """ + Test rule 5 of BIP125 (do not allow replacements that cause more than 100 + evictions) without having to rely on non-default mempool parameters. + + In order to do this, create a number of "root" UTXOs, and then hang + enough transactions off of each root UTXO to exceed the MAX_REPLACEMENT_LIMIT. + Then create a conflicting RBF replacement transaction. + """ + normal_node = self.nodes[1] + wallet = MiniWallet(normal_node) + wallet.rescan_utxos() + # Clear mempools to avoid cross-node sync failure. + for node in self.nodes: + self.generate(node, 1) + + # This has to be chosen so that the total number of transactions can exceed + # MAX_REPLACEMENT_LIMIT without having any one tx graph run into the descendant + # limit; 10 works. + num_tx_graphs = 10 + + # (Number of transactions per graph, BIP125 rule 5 failure expected) + cases = [ + # Test the base case of evicting fewer than MAX_REPLACEMENT_LIMIT + # transactions. + ((MAX_REPLACEMENT_LIMIT // num_tx_graphs) - 1, False), + + # Test hitting the rule 5 eviction limit. + (MAX_REPLACEMENT_LIMIT // num_tx_graphs, True), + ] + + for (txs_per_graph, failure_expected) in cases: + self.log.debug(f"txs_per_graph: {txs_per_graph}, failure: {failure_expected}") + # "Root" utxos of each txn graph that we will attempt to double-spend with + # an RBF replacement. + root_utxos = [] + + # For each root UTXO, create a package that contains the spend of that + # UTXO and `txs_per_graph` children tx. + for graph_num in range(num_tx_graphs): + root_utxos.append(wallet.get_utxo()) + + optin_parent_tx = wallet.send_self_transfer_multi( + from_node=normal_node, + sequence=BIP125_SEQUENCE_NUMBER, + utxos_to_spend=[root_utxos[graph_num]], + num_outputs=txs_per_graph, + ) + assert_equal(True, normal_node.getmempoolentry(optin_parent_tx['txid'])['bip125-replaceable']) + new_utxos = optin_parent_tx['new_utxos'] + + for utxo in new_utxos: + # Create spends for each output from the "root" of this graph. + child_tx = wallet.send_self_transfer( + from_node=normal_node, + utxo_to_spend=utxo, + ) + + assert normal_node.getmempoolentry(child_tx['txid']) + + num_txs_invalidated = len(root_utxos) + (num_tx_graphs * txs_per_graph) + + if failure_expected: + assert num_txs_invalidated > MAX_REPLACEMENT_LIMIT + else: + assert num_txs_invalidated <= MAX_REPLACEMENT_LIMIT + + # Now attempt to submit a tx that double-spends all the root tx inputs, which + # would invalidate `num_txs_invalidated` transactions. + tx_hex = wallet.create_self_transfer_multi( + utxos_to_spend=root_utxos, + fee_per_output=10_000_000, # absurdly high feerate + )["hex"] + + if failure_expected: + assert_raises_rpc_error( + -26, "too many potential replacements", normal_node.sendrawtransaction, tx_hex, 0) + else: + txid = normal_node.sendrawtransaction(tx_hex, 0) + assert normal_node.getmempoolentry(txid) + + # Clear the mempool once finished, and rescan the other nodes' wallet + # to account for the spends we've made on `normal_node`. + self.generate(normal_node, 1) + self.wallet.rescan_utxos() + def test_opt_in(self): """Replacing should only work if orig tx opted in""" tx0_outpoint = self.make_utxo(self.nodes[0], int(1.1 * COIN)) # Create a non-opting in transaction - tx1a = CTransaction() - tx1a.vin = [CTxIn(tx0_outpoint, nSequence=SEQUENCE_FINAL)] - tx1a.vout = [CTxOut(1 * COIN, DUMMY_P2WPKH_SCRIPT)] - tx1a_hex = tx1a.serialize().hex() - tx1a_txid = self.nodes[0].sendrawtransaction(tx1a_hex, 0) + tx1a_utxo = self.wallet.send_self_transfer( + from_node=self.nodes[0], + utxo_to_spend=tx0_outpoint, + sequence=SEQUENCE_FINAL, + fee=Decimal("0.1"), + )["new_utxo"] # This transaction isn't shown as replaceable - assert_equal(self.nodes[0].getmempoolentry(tx1a_txid)['bip125-replaceable'], False) + assert_equal(self.nodes[0].getmempoolentry(tx1a_utxo["txid"])['bip125-replaceable'], False) # Shouldn't be able to double-spend - tx1b = CTransaction() - tx1b.vin = [CTxIn(tx0_outpoint, nSequence=0)] - tx1b.vout = [CTxOut(int(0.9 * COIN), DUMMY_P2WPKH_SCRIPT)] - tx1b_hex = tx1b.serialize().hex() + tx1b_hex = self.wallet.create_self_transfer( + utxo_to_spend=tx0_outpoint, + sequence=0, + fee=Decimal("0.2"), + )["hex"] # This will raise an exception assert_raises_rpc_error(-26, "txn-mempool-conflict", self.nodes[0].sendrawtransaction, tx1b_hex, 0) @@ -423,17 +495,19 @@ class ReplaceByFeeTest(BitcoinTestFramework): tx1_outpoint = self.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 = tx2a.serialize().hex() - tx2a_txid = self.nodes[0].sendrawtransaction(tx2a_hex, 0) + tx2a_utxo = self.wallet.send_self_transfer( + from_node=self.nodes[0], + utxo_to_spend=tx1_outpoint, + sequence=0xfffffffe, + fee=Decimal("0.1"), + )["new_utxo"] # 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 = tx2b.serialize().hex() + tx2b_hex = self.wallet.create_self_transfer( + utxo_to_spend=tx1_outpoint, + sequence=0, + fee=Decimal("0.2"), + )["hex"] # This will raise an exception assert_raises_rpc_error(-26, "txn-mempool-conflict", self.nodes[0].sendrawtransaction, tx2b_hex, 0) @@ -442,34 +516,31 @@ class ReplaceByFeeTest(BitcoinTestFramework): # opt-in on one of the inputs # Transaction should be replaceable on either input - tx1a_txid = int(tx1a_txid, 16) - tx2a_txid = int(tx2a_txid, 16) - - tx3a = CTransaction() - tx3a.vin = [CTxIn(COutPoint(tx1a_txid, 0), nSequence=SEQUENCE_FINAL), - 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 = tx3a.serialize().hex() - - tx3a_txid = self.nodes[0].sendrawtransaction(tx3a_hex, 0) + tx3a_txid = self.wallet.send_self_transfer_multi( + from_node=self.nodes[0], + utxos_to_spend=[tx1a_utxo, tx2a_utxo], + sequence=[SEQUENCE_FINAL, 0xfffffffd], + fee_per_output=int(0.1 * COIN), + )["txid"] # This transaction is shown as replaceable assert_equal(self.nodes[0].getmempoolentry(tx3a_txid)['bip125-replaceable'], True) - tx3b = CTransaction() - tx3b.vin = [CTxIn(COutPoint(tx1a_txid, 0), nSequence=0)] - tx3b.vout = [CTxOut(int(0.5 * COIN), DUMMY_P2WPKH_SCRIPT)] - 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 = tx3c.serialize().hex() + self.wallet.send_self_transfer( + from_node=self.nodes[0], + utxo_to_spend=tx1a_utxo, + sequence=0, + fee=Decimal("0.4"), + ) - self.nodes[0].sendrawtransaction(tx3b_hex, 0) # If tx3b was accepted, tx3c won't look like a replacement, # but make sure it is accepted anyway - self.nodes[0].sendrawtransaction(tx3c_hex, 0) + self.wallet.send_self_transfer( + from_node=self.nodes[0], + utxo_to_spend=tx2a_utxo, + sequence=0, + fee=Decimal("0.4"), + ) def test_prioritised_transactions(self): # Ensure that fee deltas used via prioritisetransaction are @@ -478,17 +549,20 @@ class ReplaceByFeeTest(BitcoinTestFramework): # 1. Check that feeperkb uses modified fees tx0_outpoint = self.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 = tx1a.serialize().hex() - tx1a_txid = self.nodes[0].sendrawtransaction(tx1a_hex, 0) + tx1a_txid = self.wallet.send_self_transfer( + from_node=self.nodes[0], + utxo_to_spend=tx0_outpoint, + sequence=0, + fee=Decimal("0.1"), + )["txid"] # 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 = tx1b.serialize().hex() + tx1b_hex = self.wallet.create_self_transfer_multi( + utxos_to_spend=[tx0_outpoint], + sequence=0, + num_outputs=100, + amount_per_output=int(0.00001 * COIN), + )["hex"] # Verify tx1b cannot replace tx1a. assert_raises_rpc_error(-26, "insufficient fee", self.nodes[0].sendrawtransaction, tx1b_hex, 0) @@ -504,27 +578,29 @@ class ReplaceByFeeTest(BitcoinTestFramework): # 2. Check that absolute fee checks use modified fee. tx1_outpoint = self.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 = tx2a.serialize().hex() - self.nodes[0].sendrawtransaction(tx2a_hex, 0) + # tx2a + self.wallet.send_self_transfer( + from_node=self.nodes[0], + utxo_to_spend=tx1_outpoint, + sequence=0, + fee=Decimal("0.1"), + ) # Lower fee, but we'll prioritise it - tx2b = CTransaction() - tx2b.vin = [CTxIn(tx1_outpoint, nSequence=0)] - tx2b.vout = [CTxOut(int(1.01 * COIN), DUMMY_P2WPKH_SCRIPT)] - tx2b.rehash() - tx2b_hex = tx2b.serialize().hex() + tx2b = self.wallet.create_self_transfer( + utxo_to_spend=tx1_outpoint, + sequence=0, + fee=Decimal("0.09"), + ) # Verify tx2b cannot replace tx2a. - assert_raises_rpc_error(-26, "insufficient fee", self.nodes[0].sendrawtransaction, tx2b_hex, 0) + 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["txid"], fee_delta=int(0.1 * COIN)) # tx2b should now be accepted - tx2b_txid = self.nodes[0].sendrawtransaction(tx2b_hex, 0) + tx2b_txid = self.nodes[0].sendrawtransaction(tx2b["hex"], 0) assert tx2b_txid in self.nodes[0].getrawmempool() @@ -590,7 +666,6 @@ class ReplaceByFeeTest(BitcoinTestFramework): utxo_to_spend=parent_utxo, sequence=SEQUENCE_FINAL, fee_rate=Decimal('0.02'), - mempool_valid=False, ) # Broadcast replacement child tx @@ -619,6 +694,7 @@ class ReplaceByFeeTest(BitcoinTestFramework): # 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. + assert_equal(self.nodes[0].getmempoolinfo()["incrementalrelayfee"], Decimal("0.00001")) tx.vout[0].nValue -= 1 assert_raises_rpc_error(-26, "insufficient fee", self.nodes[0].sendrawtransaction, tx.serialize().hex()) |