def test_bip68_not_consensus(self):
assert (get_bip9_status(self.nodes[0], 'csv')['status'] != 'active')
txid = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), 2)
tx1 = from_hex(CTransaction(), self.nodes[0].getrawtransaction(txid))
tx1.rehash()
# Make an anyone-can-spend transaction
tx2 = CTransaction()
tx2.nVersion = 1
tx2.vin = [CTxIn(COutPoint(tx1.x16r, 0), n_sequence=0)]
tx2.vout = [
CTxOut(int(tx1.vout[0].nValue - self.relayfee * COIN),
CScript([b'a']))
]
# sign tx2
tx2_raw = self.nodes[0].signrawtransaction(to_hex(tx2))["hex"]
tx2 = from_hex(tx2, tx2_raw)
tx2.rehash()
self.nodes[0].sendrawtransaction(to_hex(tx2))
# Now make an invalid spend of tx2 according to BIP68
sequence_value = 100 # 100 block relative locktime
tx3 = CTransaction()
tx3.nVersion = 2
tx3.vin = [CTxIn(COutPoint(tx2.x16r, 0), n_sequence=sequence_value)]
tx3.vout = [
CTxOut(int(tx2.vout[0].nValue - self.relayfee * COIN),
CScript([b'a']))
]
tx3.rehash()
assert_raises_rpc_error(-26, NOT_FINAL_ERROR,
self.nodes[0].sendrawtransaction, to_hex(tx3))
# make a block that violates bip68; ensure that the tip updates
tip = int(self.nodes[0].getbestblockhash(), 16)
block = create_block(
tip, create_coinbase(self.nodes[0].getblockcount() + 1))
block.nVersion = 3
block.vtx.extend([tx1, tx2, tx3])
block.hashMerkleRoot = block.calc_merkle_root()
block.rehash()
block.solve()
self.nodes[0].submitblock(to_hex(block))
assert_equal(self.nodes[0].getbestblockhash(), block.hash)
def get_tests(self):
# shorthand for functions
block = self.chain.next_block
node = self.nodes[0]
self.chain.set_genesis_hash(int(node.getbestblockhash(), 16))
# Now we need that block to mature so we can spend the coinbase.
test = TestInstance(sync_every_block=False)
for i in range(105):
block(5000 + i)
test.blocks_and_transactions.append([self.chain.tip, True])
self.chain.save_spendable_output()
yield test
# collect spendable outputs now to avoid cluttering the code later on
out = []
for i in range(105):
out.append(self.chain.get_spendable_output())
assert_equal(node.getblock(node.getbestblockhash())['height'], 105)
block(1)
redeem_script = CScript([OP_TRUE, OP_RETURN, b"a" * 5000])
spend_tx1 = CTransaction()
spend_tx1.vin.append(
CTxIn(COutPoint(out[2].tx.sha256, out[2].n), CScript(),
0xffffffff))
spend_tx1.vout.append(CTxOut(500, redeem_script))
spend_tx1.vout.append(CTxOut(500, redeem_script))
spend_tx1.calc_sha256()
self.log.info(spend_tx1.hash)
self.chain.update_block(1, [spend_tx1])
yield self.accepted()
tx1 = CTransaction()
tx1.vout = [CTxOut(499, CScript([OP_TRUE]))]
tx1.vin.append(
CTxIn(COutPoint(spend_tx1.sha256, 0), CScript(), 0xfffffff))
tx1.vin.append(
CTxIn(COutPoint(spend_tx1.sha256, 1), CScript(), 0xfffffff))
tx1.calc_sha256()
self.log.info(tx1.hash)
yield TestInstance(
[[tx1, RejectResult(16, b'bad-txns-inputs-too-large')]])
def test_nonzero_locks(orig_tx, node, relayfee, use_height_lock):
sequence_value = 1
if not use_height_lock:
sequence_value |= SEQUENCE_LOCKTIME_TYPE_FLAG
tx = CTransaction()
tx.nVersion = 2
tx.vin = [
CTxIn(COutPoint(orig_tx.x16r, 0), n_sequence=sequence_value)
]
tx.vout = [
CTxOut(int(orig_tx.vout[0].nValue - relayfee * COIN),
CScript([b'a']))
]
tx.rehash()
if orig_tx.hash in node.getrawmempool():
# sendrawtransaction should fail if the tx is in the mempool
assert_raises_rpc_error(-26, NOT_FINAL_ERROR,
node.sendrawtransaction, to_hex(tx))
else:
# sendrawtransaction should succeed if the tx is not in the mempool
node.sendrawtransaction(to_hex(tx))
return tx
def test_disable_flag(self):
# Create some unconfirmed inputs
new_addr = self.nodes[0].getnewaddress()
self.nodes[0].sendtoaddress(new_addr, 2) # send 2 RVN
utxos = self.nodes[0].listunspent(0, 0)
assert (len(utxos) > 0)
utxo = utxos[0]
tx1 = CTransaction()
value = int(satoshi_round(utxo["amount"] - self.relayfee) * COIN)
# Check that the disable flag disables relative locktime.
# If sequence locks were used, this would require 1 block for the
# input to mature.
sequence_value = SEQUENCE_LOCKTIME_DISABLE_FLAG | 1
tx1.vin = [
CTxIn(COutPoint(int(utxo["txid"], 16), utxo["vout"]),
n_sequence=sequence_value)
]
tx1.vout = [CTxOut(value, CScript([b'a']))]
tx1_signed = self.nodes[0].signrawtransaction(to_hex(tx1))["hex"]
tx1_id = self.nodes[0].sendrawtransaction(tx1_signed)
tx1_id = int(tx1_id, 16)
# This transaction will enable sequence-locks, so this transaction should
# fail
tx2 = CTransaction()
tx2.nVersion = 2
sequence_value = sequence_value & 0x7fffffff
tx2.vin = [CTxIn(COutPoint(tx1_id, 0), n_sequence=sequence_value)]
tx2.vout = [CTxOut(int(value - self.relayfee * COIN), CScript([b'a']))]
tx2.rehash()
assert_raises_rpc_error(-26, NOT_FINAL_ERROR,
self.nodes[0].sendrawtransaction, to_hex(tx2))
# Setting the version back down to 1 should disable the sequence lock,
# so this should be accepted.
tx2.nVersion = 1
self.nodes[0].sendrawtransaction(to_hex(tx2))
def process(self, tx, height):
is_coinbase = tx.get_type() == TxType.COINBASE
start_index = 1 if is_coinbase else 0
for tx_in in tx.vin[start_index:]:
outpoints_equal = lambda coin: coin.outpoint.hash == tx_in.prevout.hash and coin.outpoint.n == tx_in.prevout.n
prevout_utxo = next(filter(outpoints_equal, self.available_outputs+self.spent_outputs))
self.current_inputs.append(UTXO(prevout_utxo.height, prevout_utxo.tx_type, prevout_utxo.outpoint, prevout_utxo.txOut))
self.current_outputs.extend([UTXO(height, tx.get_type(), COutPoint(tx.sha256, i), tx.vout[i]) for i in range(len(tx.vout))])
def get_tests(self):
# shorthand for functions
block = self.chain.next_block
node = self.nodes[0]
self.chain.set_genesis_hash(int(node.getbestblockhash(), 16))
test, out, _ = prepare_init_chain(self.chain, 105, 105, block_0=False)
yield test
assert_equal(node.getblock(node.getbestblockhash())['height'], 105)
block(1)
redeem_script = CScript([OP_TRUE, OP_RETURN, b"a" * 5000])
spend_tx1 = CTransaction()
spend_tx1.vin.append(
CTxIn(COutPoint(out[2].tx.sha256, out[2].n), CScript(),
0xffffffff))
spend_tx1.vout.append(CTxOut(500, redeem_script))
spend_tx1.vout.append(CTxOut(500, redeem_script))
spend_tx1.calc_sha256()
self.log.info(spend_tx1.hash)
self.chain.update_block(1, [spend_tx1])
yield self.accepted()
tx1 = CTransaction()
tx1.vout = [CTxOut(499, CScript([OP_TRUE]))]
tx1.vin.append(
CTxIn(COutPoint(spend_tx1.sha256, 0), CScript(), 0xfffffff))
tx1.vin.append(
CTxIn(COutPoint(spend_tx1.sha256, 1), CScript(), 0xfffffff))
tx1.calc_sha256()
self.log.info(tx1.hash)
yield TestInstance(
[[tx1, RejectResult(16, b'bad-txns-inputs-too-large')]])
def run_test(self):
self.setup_stake_coins(*self.nodes)
# Setup the p2p connections
# test_node connects to node0 (not whitelisted)
test_node = self.nodes[0].add_p2p_connection(P2PInterface())
# min_work_node connects to node1 (whitelisted)
min_work_node = self.nodes[1].add_p2p_connection(P2PInterface())
fork_snapshot_meta = get_tip_snapshot_meta(self.nodes[0])
utxo_manager = UTXOManager(self.nodes[0], fork_snapshot_meta)
genesis_coin = get_unspent_coins(self.nodes[0], 1)[0]
genesis_txout = CTxOut(
int(genesis_coin['amount'] * UNIT),
CScript(hex_str_to_bytes(genesis_coin['scriptPubKey'])))
genesis_utxo = [
UTXO(
0, TxType.COINBASE,
COutPoint(int(genesis_coin['txid'], 16), genesis_coin['vout']),
genesis_txout)
]
utxo_manager.available_outputs = genesis_utxo
self.log.info("1. Have nodes mine a block (leave IBD)")
[n.generate(1) for n in self.nodes]
tips = [int("0x" + n.getbestblockhash(), 0) for n in self.nodes]
tip_snapshot_meta = get_tip_snapshot_meta(self.nodes[0])
self.log.info(
"2. Send one block that builds on each tip. This should be accepted by node0."
)
blocks_h2 = [] # the height 2 blocks on each node's chain
block_time = int(time.time()) + 1
coin = get_unspent_coins(self.nodes[0], 1)[0]
for i in range(2):
coinbase = sign_coinbase(
self.nodes[0], create_coinbase(2, coin,
tip_snapshot_meta.hash))
blocks_h2.append(create_block(tips[i], coinbase, block_time))
blocks_h2[i].solve()
block_time += 1
test_node.send_message(msg_block(blocks_h2[0]))
min_work_node.send_message(msg_block(blocks_h2[1]))
for x in [test_node, min_work_node]:
x.sync_with_ping()
assert_equal(self.nodes[0].getblockcount(), 2)
assert_equal(self.nodes[1].getblockcount(), 1)
self.log.info(
"First height 2 block accepted by node0; correctly rejected by node1"
)
self.log.info("3. Send another block that builds on genesis.")
coinbase = utxo_manager.get_coinbase(1, n_pieces=300)
block_h1f = create_block(int("0x" + self.nodes[0].getblockhash(0), 0),
coinbase, block_time)
block_time += 1
block_h1f.solve()
test_node.send_message(msg_block(block_h1f))
utxo_manager.process(coinbase, 1)
test_node.sync_with_ping()
tip_entry_found = False
for x in self.nodes[0].getchaintips():
if x['hash'] == block_h1f.hash:
assert_equal(x['status'], "headers-only")
tip_entry_found = True
assert tip_entry_found
assert_raises_rpc_error(-1, "Block not found on disk",
self.nodes[0].getblock, block_h1f.hash)
self.log.info("4. Send another two block that build on the fork.")
coinbase = utxo_manager.get_coinbase(2)
block_h2f = create_block(block_h1f.sha256, coinbase, block_time)
block_time += 1
block_h2f.solve()
test_node.send_message(msg_block(block_h2f))
utxo_manager.process(coinbase, 2)
test_node.sync_with_ping()
# Since the earlier block was not processed by node, the new block
# can't be fully validated.
tip_entry_found = False
for x in self.nodes[0].getchaintips():
if x['hash'] == block_h2f.hash:
assert_equal(x['status'], "headers-only")
tip_entry_found = True
assert tip_entry_found
# But this block should be accepted by node since it has equal work.
self.nodes[0].getblock(block_h2f.hash)
self.log.info("Second height 2 block accepted, but not reorg'ed to")
self.log.info(
"4b. Now send another block that builds on the forking chain.")
coinbase = utxo_manager.get_coinbase(3)
block_h3 = create_block(block_h2f.sha256, coinbase,
block_h2f.nTime + 1)
block_h3.solve()
test_node.send_message(msg_block(block_h3))
utxo_manager.process(coinbase, 3)
test_node.sync_with_ping()
# Since the earlier block was not processed by node, the new block
# can't be fully validated.
tip_entry_found = False
for x in self.nodes[0].getchaintips():
if x['hash'] == block_h3.hash:
assert_equal(x['status'], "headers-only")
tip_entry_found = True
assert tip_entry_found
self.nodes[0].getblock(block_h3.hash)
# But this block should be accepted by node since it has more work.
self.nodes[0].getblock(block_h3.hash)
self.log.info("Unrequested more-work block accepted")
self.log.info("4c. Now mine 288 more blocks and deliver")
# all should be processed but
# the last (height-too-high) on node (as long as it is not missing any headers)
tip = block_h3
all_blocks = []
for height in range(4, 292):
coinbase = utxo_manager.get_coinbase(height)
next_block = create_block(tip.sha256, coinbase, tip.nTime + 1)
next_block.solve()
all_blocks.append(next_block)
tip = next_block
utxo_manager.process(coinbase, height)
# Now send the block at height 5 and check that it wasn't accepted (missing header)
test_node.send_message(msg_block(all_blocks[1]))
test_node.sync_with_ping()
assert_raises_rpc_error(-5, "Block not found", self.nodes[0].getblock,
all_blocks[1].hash)
assert_raises_rpc_error(-5, "Block not found",
self.nodes[0].getblockheader,
all_blocks[1].hash)
# The block at height 5 should be accepted if we provide the missing header, though
headers_message = msg_headers()
headers_message.headers.append(CBlockHeader(all_blocks[0]))
test_node.send_message(headers_message)
test_node.send_message(msg_block(all_blocks[1]))
test_node.sync_with_ping()
self.nodes[0].getblock(all_blocks[1].hash)
# Now send the blocks in all_blocks
for i in range(288):
test_node.send_message(msg_block(all_blocks[i]))
test_node.sync_with_ping()
# Blocks 1-287 should be accepted, block 288 should be ignored because it's too far ahead
for x in all_blocks[:-1]:
self.nodes[0].getblock(x.hash)
assert_raises_rpc_error(-1, "Block not found on disk",
self.nodes[0].getblock, all_blocks[-1].hash)
self.log.info(
"5. Test handling of unrequested block on the node that didn't process"
)
# Should still not be processed (even though it has a child that has more
# work).
# The node should have requested the blocks at some point, so
# disconnect/reconnect first
self.nodes[0].disconnect_p2ps()
self.nodes[1].disconnect_p2ps()
test_node = self.nodes[0].add_p2p_connection(P2PInterface())
test_node.send_message(msg_block(block_h1f))
test_node.sync_with_ping()
assert_equal(self.nodes[0].getblockcount(), 2)
self.log.info(
"Unrequested block that would complete more-work chain was ignored"
)
self.log.info("6. Try to get node to request the missing block.")
# Poke the node with an inv for block at height 3 and see if that
# triggers a getdata on block 2 (it should if block 2 is missing).
with mininode_lock:
# Clear state so we can check the getdata request
test_node.last_message.pop("getdata", None)
test_node.send_message(msg_inv([CInv(2, block_h3.sha256)]))
test_node.sync_with_ping()
with mininode_lock:
getdata = test_node.last_message["getdata"]
# Check that the getdata includes the right block
assert_equal(getdata.inv[0].hash, block_h1f.sha256)
self.log.info("Inv at tip triggered getdata for unprocessed block")
self.log.info(
"7. Send the missing block for the third time (now it is requested)"
)
test_node.send_message(msg_block(block_h1f))
test_node.sync_with_ping()
assert_equal(self.nodes[0].getblockcount(), 290)
self.nodes[0].getblock(all_blocks[286].hash)
assert_equal(self.nodes[0].getbestblockhash(), all_blocks[286].hash)
assert_raises_rpc_error(-1, "Block not found on disk",
self.nodes[0].getblock, all_blocks[287].hash)
self.log.info(
"Successfully reorged to longer chain from non-whitelisted peer")
self.log.info(
"8. Create a chain which is invalid at a height longer than the")
# current chain, but which has more blocks on top of that
# Reset utxo managers to current state
utxo_fork_manager = UTXOManager(self.nodes[0],
get_tip_snapshot_meta(self.nodes[0]))
utxo_fork_manager.available_outputs = utxo_manager.available_outputs
utxo_manager = UTXOManager(self.nodes[0],
get_tip_snapshot_meta(self.nodes[0]))
utxo_manager.available_outputs = utxo_fork_manager.available_outputs
# Create one block on top of the valid chain
coinbase = utxo_manager.get_coinbase(291)
valid_block = create_block(all_blocks[286].sha256, coinbase,
all_blocks[286].nTime + 1)
valid_block.solve()
test_node.send_and_ping(msg_block(valid_block))
assert_equal(self.nodes[0].getblockcount(), 291)
# Create three blocks on a fork, but make the second one invalid
coinbase = utxo_fork_manager.get_coinbase(291)
block_291f = create_block(all_blocks[286].sha256, coinbase,
all_blocks[286].nTime + 1)
block_291f.solve()
utxo_fork_manager.process(coinbase, 291)
coinbase = utxo_fork_manager.get_coinbase(292)
block_292f = create_block(block_291f.sha256, coinbase,
block_291f.nTime + 1)
# block_292f spends a coinbase below maturity!
block_292f.vtx.append(
create_tx_with_script(block_291f.vtx[0],
0,
script_sig=b"42",
amount=1))
block_292f.compute_merkle_trees()
block_292f.solve()
utxo_fork_manager.process(coinbase, 292)
utxo_fork_manager.process(block_292f.vtx[1], 292)
coinbase = utxo_fork_manager.get_coinbase(293)
block_293f = create_block(block_292f.sha256, coinbase,
block_292f.nTime + 1)
block_293f.solve()
utxo_fork_manager.process(coinbase, 293)
# Now send all the headers on the chain and enough blocks to trigger reorg
headers_message = msg_headers()
headers_message.headers.append(CBlockHeader(block_291f))
headers_message.headers.append(CBlockHeader(block_292f))
headers_message.headers.append(CBlockHeader(block_293f))
test_node.send_message(headers_message)
test_node.sync_with_ping()
tip_entry_found = False
for x in self.nodes[0].getchaintips():
if x['hash'] == block_293f.hash:
assert_equal(x['status'], "headers-only")
tip_entry_found = True
assert tip_entry_found
assert_raises_rpc_error(-1, "Block not found on disk",
self.nodes[0].getblock, block_293f.hash)
test_node.send_message(msg_block(block_291f))
test_node.sync_with_ping()
self.nodes[0].getblock(block_291f.hash)
test_node.send_message(msg_block(block_292f))
# At this point we've sent an obviously-bogus block, wait for full processing
# without assuming whether we will be disconnected or not
try:
# Only wait a short while so the test doesn't take forever if we do get
# disconnected
test_node.sync_with_ping(timeout=1)
except AssertionError:
test_node.wait_for_disconnect()
self.nodes[0].disconnect_p2ps()
test_node = self.nodes[0].add_p2p_connection(P2PInterface())
# We should have failed reorg and switched back to 290 (but have block 291)
assert_equal(self.nodes[0].getblockcount(), 291)
assert_equal(self.nodes[0].getbestblockhash(), valid_block.hash)
assert_equal(self.nodes[0].getblock(block_292f.hash)["confirmations"],
-1)
# Now send a new header on the invalid chain, indicating we're forked off, and expect to get disconnected
coinbase = utxo_fork_manager.get_coinbase(294)
block_294f = create_block(block_293f.sha256, coinbase,
block_293f.nTime + 1)
block_294f.solve()
headers_message = msg_headers()
headers_message.headers.append(CBlockHeader(block_294f))
test_node.send_message(headers_message)
test_node.wait_for_disconnect()
self.log.info(
"9. Connect node1 to node0 and ensure it is able to sync")
connect_nodes(self.nodes[0], 1)
sync_blocks([self.nodes[0], self.nodes[1]])
self.log.info("Successfully synced nodes 1 and 0")
def test_sequence_lock_confirmed_inputs(self):
# Create lots of confirmed utxos, and use them to generate lots of random
# transactions.
max_outputs = 50
addresses = []
while len(addresses) < max_outputs:
addresses.append(self.nodes[0].getnewaddress())
while len(self.nodes[0].listunspent()) < 200:
random.shuffle(addresses)
num_outputs = random.randint(1, max_outputs)
outputs = {}
for i in range(num_outputs):
outputs[addresses[i]] = random.randint(1, 20) * 0.01
self.nodes[0].sendmany("", outputs)
self.nodes[0].generate(1)
utxos = self.nodes[0].listunspent()
# Try creating a lot of random transactions.
# Each time, choose a random number of inputs, and randomly set
# some of those inputs to be sequence locked (and randomly choose
# between height/time locking). Small random chance of making the locks
# all pass.
for i in range(400):
# Randomly choose up to 10 inputs
num_inputs = random.randint(1, 10)
random.shuffle(utxos)
# Track whether any sequence locks used should fail
should_pass = True
# Track whether this transaction was built with sequence locks
using_sequence_locks = False
tx = CTransaction()
tx.nVersion = 2
value = 0
for j in range(num_inputs):
sequence_value = 0xfffffffe # this disables sequence locks
# 50% chance we enable sequence locks
if random.randint(0, 1):
using_sequence_locks = True
# 10% of the time, make the input sequence value pass
input_will_pass = (random.randint(1, 10) == 1)
sequence_value = utxos[j]["confirmations"]
if not input_will_pass:
sequence_value += 1
should_pass = False
# Figure out what the median-time-past was for the confirmed input
# Note that if an input has N confirmations, we're going back N blocks
# from the tip so that we're looking up MTP of the block
# PRIOR to the one the input appears in, as per the BIP68 spec.
orig_time = self.get_median_time_past(
utxos[j]["confirmations"])
cur_time = self.get_median_time_past(0) # MTP of the tip
# can only timelock this input if it's not too old -- otherwise use height
can_time_lock = True
if ((cur_time - orig_time) >> SEQUENCE_LOCKTIME_GRANULARITY
) >= SEQUENCE_LOCKTIME_MASK:
can_time_lock = False
# if time-lockable, then 50% chance we make this a time lock
if random.randint(0, 1) and can_time_lock:
# Find first time-lock value that fails, or latest one that succeeds
time_delta = sequence_value << SEQUENCE_LOCKTIME_GRANULARITY
if input_will_pass and time_delta > cur_time - orig_time:
sequence_value = ((cur_time - orig_time) >>
SEQUENCE_LOCKTIME_GRANULARITY)
elif not input_will_pass and time_delta <= cur_time - orig_time:
sequence_value = (
(cur_time - orig_time) >>
SEQUENCE_LOCKTIME_GRANULARITY) + 1
sequence_value |= SEQUENCE_LOCKTIME_TYPE_FLAG
tx.vin.append(
CTxIn(COutPoint(int(utxos[j]["txid"], 16),
utxos[j]["vout"]),
n_sequence=sequence_value))
value += utxos[j]["amount"] * COIN
# Overestimate the size of the tx - signatures should be less than 120 bytes, and leave 50 for the output
tx_size = len(to_hex(tx)) // 2 + 120 * num_inputs + 50
tx.vout.append(
CTxOut(int(value - self.relayfee * tx_size * COIN / 1000),
CScript([b'a'])))
rawtx = self.nodes[0].signrawtransaction(to_hex(tx))["hex"]
if using_sequence_locks and not should_pass:
# This transaction should be rejected
assert_raises_rpc_error(-26, NOT_FINAL_ERROR,
self.nodes[0].sendrawtransaction,
rawtx)
else:
# This raw transaction should be accepted
self.nodes[0].sendrawtransaction(rawtx)
utxos = self.nodes[0].listunspent()
def test_sequence_lock_unconfirmed_inputs(self):
# Store height so we can easily reset the chain at the end of the test
cur_height = self.nodes[0].getblockcount()
# Create a mempool tx.
txid = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), 2)
tx1 = from_hex(CTransaction(), self.nodes[0].getrawtransaction(txid))
tx1.rehash()
# Anyone-can-spend mempool tx.
# Sequence lock of 0 should pass.
tx2 = CTransaction()
tx2.nVersion = 2
tx2.vin = [CTxIn(COutPoint(tx1.x16r, 0), n_sequence=0)]
tx2.vout = [
CTxOut(int(tx1.vout[0].nValue - self.relayfee * COIN),
CScript([b'a']))
]
tx2_raw = self.nodes[0].signrawtransaction(to_hex(tx2))["hex"]
tx2 = from_hex(tx2, tx2_raw)
tx2.rehash()
self.nodes[0].sendrawtransaction(tx2_raw)
# Create a spend of the 0th output of orig_tx with a sequence lock
# of 1, and test what happens when submitting.
# orig_tx.vout[0] must be an anyone-can-spend output
def test_nonzero_locks(orig_tx, node, relayfee, use_height_lock):
sequence_value = 1
if not use_height_lock:
sequence_value |= SEQUENCE_LOCKTIME_TYPE_FLAG
tx = CTransaction()
tx.nVersion = 2
tx.vin = [
CTxIn(COutPoint(orig_tx.x16r, 0), n_sequence=sequence_value)
]
tx.vout = [
CTxOut(int(orig_tx.vout[0].nValue - relayfee * COIN),
CScript([b'a']))
]
tx.rehash()
if orig_tx.hash in node.getrawmempool():
# sendrawtransaction should fail if the tx is in the mempool
assert_raises_rpc_error(-26, NOT_FINAL_ERROR,
node.sendrawtransaction, to_hex(tx))
else:
# sendrawtransaction should succeed if the tx is not in the mempool
node.sendrawtransaction(to_hex(tx))
return tx
test_nonzero_locks(tx2,
self.nodes[0],
self.relayfee,
use_height_lock=True)
test_nonzero_locks(tx2,
self.nodes[0],
self.relayfee,
use_height_lock=False)
# Now mine some blocks, but make sure tx2 doesn't get mined.
# Use prioritisetransaction to lower the effective feerate to 0
self.nodes[0].prioritisetransaction(txid=tx2.hash,
fee_delta=int(-self.relayfee *
COIN))
cur_time = int(time.time())
for _ in range(10):
self.nodes[0].setmocktime(cur_time + 600)
self.nodes[0].generate(1)
cur_time += 600
assert (tx2.hash in self.nodes[0].getrawmempool())
test_nonzero_locks(tx2,
self.nodes[0],
self.relayfee,
use_height_lock=True)
test_nonzero_locks(tx2,
self.nodes[0],
self.relayfee,
use_height_lock=False)
# Mine tx2, and then try again
self.nodes[0].prioritisetransaction(txid=tx2.hash,
fee_delta=int(self.relayfee *
COIN))
# Advance the time on the node so that we can test timelocks
self.nodes[0].setmocktime(cur_time + 600)
self.nodes[0].generate(1)
assert (tx2.hash not in self.nodes[0].getrawmempool())
# Now that tx2 is not in the mempool, a sequence locked spend should
# succeed
tx3 = test_nonzero_locks(tx2,
self.nodes[0],
self.relayfee,
use_height_lock=False)
assert (tx3.hash in self.nodes[0].getrawmempool())
self.nodes[0].generate(1)
assert (tx3.hash not in self.nodes[0].getrawmempool())
# One more test, this time using height locks
tx4 = test_nonzero_locks(tx3,
self.nodes[0],
self.relayfee,
use_height_lock=True)
assert (tx4.hash in self.nodes[0].getrawmempool())
# Now try combining confirmed and unconfirmed inputs
tx5 = test_nonzero_locks(tx4,
self.nodes[0],
self.relayfee,
use_height_lock=True)
assert (tx5.hash not in self.nodes[0].getrawmempool())
utxos = self.nodes[0].listunspent()
tx5.vin.append(
CTxIn(COutPoint(int(utxos[0]["txid"], 16), utxos[0]["vout"]),
n_sequence=1))
tx5.vout[0].nValue += int(utxos[0]["amount"] * COIN)
raw_tx5 = self.nodes[0].signrawtransaction(to_hex(tx5))["hex"]
assert_raises_rpc_error(-26, NOT_FINAL_ERROR,
self.nodes[0].sendrawtransaction, raw_tx5)
# Test mempool-BIP68 consistency after reorg
#
# State of the transactions in the last blocks:
# ... -> [ tx2 ] -> [ tx3 ]
# tip-1 tip
# And currently tx4 is in the mempool.
#
# If we invalidate the tip, tx3 should get added to the mempool, causing
# tx4 to be removed (fails sequence-lock).
self.nodes[0].invalidateblock(self.nodes[0].getbestblockhash())
assert (tx4.hash not in self.nodes[0].getrawmempool())
assert (tx3.hash in self.nodes[0].getrawmempool())
# Now mine 2 empty blocks to reorg out the current tip (labeled tip-1 in
# diagram above).
# This would cause tx2 to be added back to the mempool, which in turn causes
# tx3 to be removed.
tip = int(
self.nodes[0].getblockhash(self.nodes[0].getblockcount() - 1), 16)
height = self.nodes[0].getblockcount()
for _ in range(2):
block = create_block(tip, create_coinbase(height), cur_time)
block.nVersion = 3
block.rehash()
block.solve()
tip = block.x16r
height += 1
self.nodes[0].submitblock(to_hex(block))
cur_time += 1
mempool = self.nodes[0].getrawmempool()
assert (tx3.hash not in mempool)
assert (tx2.hash in mempool)
# Reset the chain and get rid of the mocktimed-blocks
self.nodes[0].setmocktime(0)
self.nodes[0].invalidateblock(self.nodes[0].getblockhash(cur_height +
1))
self.nodes[0].generate(10)
def test_p2p_schema(self):
"""
This test creates the following nodes:
1. serving_node - full node that has the the snapshot
2. syncing_p2p - mini node that downloads snapshot from serving_node and tests the protocol
3. syncing_node - the node which starts with fast sync
4. serving_p2p - mini node that sends snapshot to syncing_node and tests the protocol
"""
serving_node = self.nodes[0]
syncing_node = self.nodes[1]
self.start_node(serving_node.index)
self.start_node(syncing_node.index)
self.setup_stake_coins(serving_node)
# generate 2 epochs + 1 block to create the first finalized snapshot
serving_node.generatetoaddress(
5 + 5 + 1, serving_node.getnewaddress('', 'bech32'))
assert_equal(serving_node.getblockcount(), 11)
wait_until(lambda: has_valid_snapshot(serving_node, 4), timeout=10)
syncing_p2p = serving_node.add_p2p_connection(BaseNode())
serving_p2p = syncing_node.add_p2p_connection(
BaseNode(), services=SERVICE_FLAGS_WITH_SNAPSHOT)
# configure serving_p2p to have snapshot header and parent block
serving_p2p.update_snapshot_from(serving_node)
serving_p2p.update_headers_and_blocks_from(serving_node)
network_thread_start()
syncing_p2p.wait_for_verack()
# test snapshot downloading in chunks
syncing_p2p.send_message(msg_getsnaphead())
wait_until(lambda: syncing_p2p.snapshot_header.total_utxo_subsets > 0,
timeout=10)
chunks = math.ceil(syncing_p2p.snapshot_header.total_utxo_subsets / 2)
for i in range(1, chunks + 1):
getsnapshot = GetSnapshot(
syncing_p2p.snapshot_header.snapshot_hash,
len(syncing_p2p.snapshot_data), 2)
syncing_p2p.send_message(msg_getsnapshot(getsnapshot))
snapshot_size = min(i * 2,
syncing_p2p.snapshot_header.total_utxo_subsets)
wait_until(lambda: len(syncing_p2p.snapshot_data) == snapshot_size,
timeout=10)
assert_equal(len(syncing_p2p.snapshot_data),
syncing_p2p.snapshot_header.total_utxo_subsets)
self.log.info('Snapshot was downloaded successfully')
# validate the snapshot hash
utxos = []
for subset in syncing_p2p.snapshot_data:
for n in subset.outputs:
out = COutPoint(subset.tx_id, n)
utxo = UTXO(subset.height, subset.tx_type, out,
subset.outputs[n])
utxos.append(utxo)
inputs = bytes_to_hex_str(ser_vector([]))
outputs = bytes_to_hex_str(ser_vector(utxos))
stake_modifier = "%064x" % syncing_p2p.snapshot_header.stake_modifier
chain_work = bytes_to_hex_str(
ser_uint256(syncing_p2p.snapshot_header.chain_work))
res = self.nodes[0].calcsnapshothash(inputs, outputs, stake_modifier,
chain_work)
snapshot_hash = uint256_from_hex(res['hash'])
assert_equal(snapshot_hash, syncing_p2p.snapshot_header.snapshot_hash)
self.log.info('Snapshot was validated successfully')
# test snapshot serving
wait_until(lambda: serving_p2p.snapshot_requested, timeout=10)
snapshot = Snapshot(
snapshot_hash=serving_p2p.snapshot_header.snapshot_hash,
utxo_subset_index=0,
utxo_subsets=syncing_p2p.snapshot_data,
)
serving_p2p.send_message(msg_snapshot(snapshot))
wait_until(lambda: syncing_node.getblockcount() == 11, timeout=10)
assert_equal(serving_node.gettxoutsetinfo(),
syncing_node.gettxoutsetinfo())
self.log.info('Snapshot was sent successfully')
# clean up test
serving_node.disconnect_p2ps()
syncing_node.disconnect_p2ps()
network_thread_join()
self.stop_node(serving_node.index)
self.stop_node(syncing_node.index)
self.log.info('test_p2p_schema passed')