Differential D13880 Diff 40272 test/functional/feature_block.py

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test/functional/feature_block.py

Show First 20 Lines • Show All 61 Lines • ▼ Show 20 Lines	def serialize(self):
r += tx.serialize()		r += tx.serialize()
return r		return r

def normal_serialize(self):		def normal_serialize(self):
return super().serialize()		return super().serialize()


# Valid for block at height 120		# Valid for block at height 120
DUPLICATE_COINBASE_SCRIPT_SIG = b'\x01\x78'		DUPLICATE_COINBASE_SCRIPT_SIG = b"\x01\x78"


class FullBlockTest(BitcoinTestFramework):		class FullBlockTest(BitcoinTestFramework):
def set_test_params(self):		def set_test_params(self):
self.num_nodes = 1		self.num_nodes = 1
self.setup_clean_chain = True		self.setup_clean_chain = True
# This is a consensus block test, we don't care about tx policy		# This is a consensus block test, we don't care about tx policy
self.extra_args = [['-noparkdeepreorg',		self.extra_args = [["-noparkdeepreorg", "-acceptnonstdtxn=1"]]
'-acceptnonstdtxn=1']]

def run_test(self):		def run_test(self):
node = self.nodes[0] # convenience reference to the node		node = self.nodes[0] # convenience reference to the node

self.bootstrap_p2p() # Add one p2p connection to the node		self.bootstrap_p2p() # Add one p2p connection to the node

self.block_heights = {}		self.block_heights = {}
self.coinbase_key = ECKey()		self.coinbase_key = ECKey()
self.coinbase_key.generate()		self.coinbase_key.generate()
self.coinbase_pubkey = self.coinbase_key.get_pubkey().get_bytes()		self.coinbase_pubkey = self.coinbase_key.get_pubkey().get_bytes()
self.tip = None		self.tip = None
self.blocks = {}		self.blocks = {}
self.genesis_hash = int(self.nodes[0].getbestblockhash(), 16)		self.genesis_hash = int(self.nodes[0].getbestblockhash(), 16)
self.block_heights[self.genesis_hash] = 0		self.block_heights[self.genesis_hash] = 0
self.spendable_outputs = []		self.spendable_outputs = []

# Create a new block		# Create a new block
b_dup_cb = self.next_block('dup_cb')		b_dup_cb = self.next_block("dup_cb")
b_dup_cb.vtx[0].vin[0].scriptSig = DUPLICATE_COINBASE_SCRIPT_SIG		b_dup_cb.vtx[0].vin[0].scriptSig = DUPLICATE_COINBASE_SCRIPT_SIG
b_dup_cb.vtx[0].rehash()		b_dup_cb.vtx[0].rehash()
duplicate_tx = b_dup_cb.vtx[0]		duplicate_tx = b_dup_cb.vtx[0]
b_dup_cb = self.update_block('dup_cb', [])		b_dup_cb = self.update_block("dup_cb", [])
self.send_blocks([b_dup_cb])		self.send_blocks([b_dup_cb])

b0 = self.next_block(0)		b0 = self.next_block(0)
self.save_spendable_output()		self.save_spendable_output()
self.send_blocks([b0])		self.send_blocks([b0])

# These constants chosen specifically to trigger an immature coinbase spend		# These constants chosen specifically to trigger an immature coinbase spend
# at a certain time below.		# at a certain time below.
Show All 31 Lines	def run_test(self):
# Submit blocks for rejection, each of which contains a single transaction		# Submit blocks for rejection, each of which contains a single transaction
# (aside from coinbase) which should be considered invalid.		# (aside from coinbase) which should be considered invalid.
for TxTemplate in invalid_txs.iter_all_templates():		for TxTemplate in invalid_txs.iter_all_templates():
template = TxTemplate(spend_tx=attempt_spend_tx)		template = TxTemplate(spend_tx=attempt_spend_tx)

if template.valid_in_block:		if template.valid_in_block:
continue		continue

self.log.info(		self.log.info("Reject block with invalid tx: %s", TxTemplate.__name__)
"Reject block with invalid tx: %s",
TxTemplate.__name__)
blockname = f"for_invalid.{TxTemplate.__name__}"		blockname = f"for_invalid.{TxTemplate.__name__}"
badblock = self.next_block(blockname)		badblock = self.next_block(blockname)
badtx = template.get_tx()		badtx = template.get_tx()
if TxTemplate != invalid_txs.InputMissing:		if TxTemplate != invalid_txs.InputMissing:
self.sign_tx(badtx, attempt_spend_tx)		self.sign_tx(badtx, attempt_spend_tx)
badtx.rehash()		badtx.rehash()
badblock = self.update_block(blockname, [badtx])		badblock = self.update_block(blockname, [badtx])
self.send_blocks(		self.send_blocks(
[badblock], success=False,		[badblock],
reject_reason=(		success=False,
template.block_reject_reason or template.reject_reason),		reject_reason=(template.block_reject_reason or template.reject_reason),
reconnect=True, timeout=2)		reconnect=True,
		timeout=2,
		)

self.move_tip(2)		self.move_tip(2)

# Fork like this:		# Fork like this:
#		#
# genesis -> b1 (0) -> b2 (1)		# genesis -> b1 (0) -> b2 (1)
# \-> b3 (1)		# \-> b3 (1)
#		#
Show All 24 Lines	def run_test(self):
self.log.info("Reorg back to the original chain")		self.log.info("Reorg back to the original chain")
b6 = self.next_block(6, spend=out[3])		b6 = self.next_block(6, spend=out[3])
self.send_blocks([b6], True)		self.send_blocks([b6], True)

# Try to create a fork that double-spends		# Try to create a fork that double-spends
# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)		# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
# \-> b7 (2) -> b8 (4)		# \-> b7 (2) -> b8 (4)
# \-> b3 (1) -> b4 (2)		# \-> b3 (1) -> b4 (2)
self.log.info(		self.log.info("Reject a chain with a double spend, even if it is longer")
"Reject a chain with a double spend, even if it is longer")
self.move_tip(5)		self.move_tip(5)
b7 = self.next_block(7, spend=out[2])		b7 = self.next_block(7, spend=out[2])
self.send_blocks([b7], False)		self.send_blocks([b7], False)

b8 = self.next_block(8, spend=out[4])		b8 = self.next_block(8, spend=out[4])
self.send_blocks([b8], False, reconnect=True)		self.send_blocks([b8], False, reconnect=True)

# Try to create a block that has too much fee		# Try to create a block that has too much fee
# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)		# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
# \-> b9 (4)		# \-> b9 (4)
# \-> b3 (1) -> b4 (2)		# \-> b3 (1) -> b4 (2)
self.log.info(		self.log.info("Reject a block where the miner creates too much coinbase reward")
"Reject a block where the miner creates too much coinbase reward")
self.move_tip(6)		self.move_tip(6)
b9 = self.next_block(9, spend=out[4], additional_coinbase_value=1)		b9 = self.next_block(9, spend=out[4], additional_coinbase_value=1)
self.send_blocks([b9], success=False,		self.send_blocks(
reject_reason='bad-cb-amount', reconnect=True)		[b9], success=False, reject_reason="bad-cb-amount", reconnect=True
		)

# Create a fork that ends in a block with too much fee (the one that causes the reorg)		# Create a fork that ends in a block with too much fee (the one that causes the reorg)
# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)		# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
# \-> b10 (3) -> b11 (4)		# \-> b10 (3) -> b11 (4)
# \-> b3 (1) -> b4 (2)		# \-> b3 (1) -> b4 (2)
self.log.info(		self.log.info(
"Reject a chain where the miner creates too much coinbase reward, even if the chain is longer")		"Reject a chain where the miner creates too much coinbase reward, even if"
		" the chain is longer"
		)
self.move_tip(5)		self.move_tip(5)
b10 = self.next_block(10, spend=out[3])		b10 = self.next_block(10, spend=out[3])
self.send_blocks([b10], False)		self.send_blocks([b10], False)

b11 = self.next_block(11, spend=out[4], additional_coinbase_value=1)		b11 = self.next_block(11, spend=out[4], additional_coinbase_value=1)
self.send_blocks([b11], success=False,		self.send_blocks(
reject_reason='bad-cb-amount', reconnect=True)		[b11], success=False, reject_reason="bad-cb-amount", reconnect=True
		)

# Try again, but with a valid fork first		# Try again, but with a valid fork first
# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)		# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
# \-> b12 (3) -> b13 (4) -> b14 (5)		# \-> b12 (3) -> b13 (4) -> b14 (5)
# \-> b3 (1) -> b4 (2)		# \-> b3 (1) -> b4 (2)
self.log.info(		self.log.info(
"Reject a chain where the miner creates too much coinbase reward, even if the chain is longer (on a forked chain)")		"Reject a chain where the miner creates too much coinbase reward, even if"
		" the chain is longer (on a forked chain)"
		)
self.move_tip(5)		self.move_tip(5)
b12 = self.next_block(12, spend=out[3])		b12 = self.next_block(12, spend=out[3])
self.save_spendable_output()		self.save_spendable_output()
b13 = self.next_block(13, spend=out[4])		b13 = self.next_block(13, spend=out[4])
self.save_spendable_output()		self.save_spendable_output()
b14 = self.next_block(14, spend=out[5], additional_coinbase_value=1)		b14 = self.next_block(14, spend=out[5], additional_coinbase_value=1)
self.send_blocks([b12, b13, b14], success=False,		self.send_blocks(
reject_reason='bad-cb-amount', reconnect=True)		[b12, b13, b14],
		success=False,
		reject_reason="bad-cb-amount",
		reconnect=True,
		)

# New tip should be b13.		# New tip should be b13.
assert_equal(node.getbestblockhash(), b13.hash)		assert_equal(node.getbestblockhash(), b13.hash)

self.move_tip(13)		self.move_tip(13)
b15 = self.next_block(15)		b15 = self.next_block(15)
self.save_spendable_output()		self.save_spendable_output()
self.send_blocks([b15], True)		self.send_blocks([b15], True)

# Attempt to spend a transaction created on a different fork		# Attempt to spend a transaction created on a different fork
# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)		# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
# \-> b12 (3) -> b13 (4) -> b15 (5) -> b17 (b3.vtx[1])		# \-> b12 (3) -> b13 (4) -> b15 (5) -> b17 (b3.vtx[1])
# \-> b3 (1) -> b4 (2)		# \-> b3 (1) -> b4 (2)
self.log.info("Reject a block with a spend from a re-org'ed out tx")		self.log.info("Reject a block with a spend from a re-org'ed out tx")
self.move_tip(15)		self.move_tip(15)
b17 = self.next_block(17, spend=txout_b3)		b17 = self.next_block(17, spend=txout_b3)
self.send_blocks([b17], success=False,		self.send_blocks(
reject_reason='bad-txns-inputs-missingorspent', reconnect=True)		[b17],
		success=False,
		reject_reason="bad-txns-inputs-missingorspent",
		reconnect=True,
		)

# Attempt to spend a transaction created on a different fork (on a fork this time)		# Attempt to spend a transaction created on a different fork (on a fork this time)
# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)		# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
# \-> b12 (3) -> b13 (4) -> b15 (5)		# \-> b12 (3) -> b13 (4) -> b15 (5)
# \-> b18 (b3.vtx[1]) -> b19 (6)		# \-> b18 (b3.vtx[1]) -> b19 (6)
# \-> b3 (1) -> b4 (2)		# \-> b3 (1) -> b4 (2)
self.log.info(		self.log.info(
"Reject a block with a spend from a re-org'ed out tx (on a forked chain)")		"Reject a block with a spend from a re-org'ed out tx (on a forked chain)"
		)
self.move_tip(13)		self.move_tip(13)
b18 = self.next_block(18, spend=txout_b3)		b18 = self.next_block(18, spend=txout_b3)
self.send_blocks([b18], False)		self.send_blocks([b18], False)

b19 = self.next_block(19, spend=out[6])		b19 = self.next_block(19, spend=out[6])
self.send_blocks([b19], success=False,		self.send_blocks(
reject_reason='bad-txns-inputs-missingorspent', reconnect=True)		[b19],
		success=False,
		reject_reason="bad-txns-inputs-missingorspent",
		reconnect=True,
		)

# Attempt to spend a coinbase at depth too low		# Attempt to spend a coinbase at depth too low
# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)		# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
# \-> b12 (3) -> b13 (4) -> b15 (5) -> b20 (7)		# \-> b12 (3) -> b13 (4) -> b15 (5) -> b20 (7)
# \-> b3 (1) -> b4 (2)		# \-> b3 (1) -> b4 (2)
self.log.info("Reject a block spending an immature coinbase.")		self.log.info("Reject a block spending an immature coinbase.")
self.move_tip(15)		self.move_tip(15)
b20 = self.next_block(20, spend=out[7])		b20 = self.next_block(20, spend=out[7])
self.send_blocks(		self.send_blocks(
[b20],		[b20],
success=False,		success=False,
reject_reason='bad-txns-premature-spend-of-coinbase',		reject_reason="bad-txns-premature-spend-of-coinbase",
reconnect=True)		reconnect=True,
		)

# Attempt to spend a coinbase at depth too low (on a fork this time)		# Attempt to spend a coinbase at depth too low (on a fork this time)
# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)		# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
# \-> b12 (3) -> b13 (4) -> b15 (5)		# \-> b12 (3) -> b13 (4) -> b15 (5)
# \-> b21 (6) -> b22 (5)		# \-> b21 (6) -> b22 (5)
# \-> b3 (1) -> b4 (2)		# \-> b3 (1) -> b4 (2)
self.log.info(		self.log.info(
"Reject a block spending an immature coinbase (on a forked chain)")		"Reject a block spending an immature coinbase (on a forked chain)"
		)
self.move_tip(13)		self.move_tip(13)
b21 = self.next_block(21, spend=out[6])		b21 = self.next_block(21, spend=out[6])
self.send_blocks([b21], False)		self.send_blocks([b21], False)

b22 = self.next_block(22, spend=out[5])		b22 = self.next_block(22, spend=out[5])
self.send_blocks(		self.send_blocks(
[b22],		[b22],
success=False,		success=False,
reject_reason='bad-txns-premature-spend-of-coinbase',		reject_reason="bad-txns-premature-spend-of-coinbase",
reconnect=True)		reconnect=True,
		)

# Create a block on either side of LEGACY_MAX_BLOCK_SIZE and make sure its accepted/rejected		# Create a block on either side of LEGACY_MAX_BLOCK_SIZE and make sure its accepted/rejected
# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)		# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
# \-> b12 (3) -> b13 (4) -> b15 (5) -> b23 (6)		# \-> b12 (3) -> b13 (4) -> b15 (5) -> b23 (6)
# \-> b24 (6) -> b25 (7)		# \-> b24 (6) -> b25 (7)
# \-> b3 (1) -> b4 (2)		# \-> b3 (1) -> b4 (2)
self.log.info("Accept a block of size LEGACY_MAX_BLOCK_SIZE")		self.log.info("Accept a block of size LEGACY_MAX_BLOCK_SIZE")
self.move_tip(15)		self.move_tip(15)
b23 = self.next_block(23, spend=out[6])		b23 = self.next_block(23, spend=out[6])
tx = CTransaction()		tx = CTransaction()
script_length = LEGACY_MAX_BLOCK_SIZE - len(b23.serialize()) - 69		script_length = LEGACY_MAX_BLOCK_SIZE - len(b23.serialize()) - 69
script_output = CScript([b'\x00' * script_length])		script_output = CScript([b"\x00" * script_length])
tx.vout.append(CTxOut(0, script_output))		tx.vout.append(CTxOut(0, script_output))
tx.vin.append(CTxIn(COutPoint(b23.vtx[1].sha256, 0)))		tx.vin.append(CTxIn(COutPoint(b23.vtx[1].sha256, 0)))
b23 = self.update_block(23, [tx])		b23 = self.update_block(23, [tx])
# Make sure the math above worked out to produce a max-sized block		# Make sure the math above worked out to produce a max-sized block
assert_equal(len(b23.serialize()), LEGACY_MAX_BLOCK_SIZE)		assert_equal(len(b23.serialize()), LEGACY_MAX_BLOCK_SIZE)
self.send_blocks([b23], True)		self.send_blocks([b23], True)
self.save_spendable_output()		self.save_spendable_output()

# Create blocks with a coinbase input script size out of range		# Create blocks with a coinbase input script size out of range
# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)		# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
# \-> b12 (3) -> b13 (4) -> b15 (5) -> b23 (6) -> b30 (7)		# \-> b12 (3) -> b13 (4) -> b15 (5) -> b23 (6) -> b30 (7)
# \-> ... (6) -> ... (7)		# \-> ... (6) -> ... (7)
# \-> b3 (1) -> b4 (2)		# \-> b3 (1) -> b4 (2)
self.log.info(		self.log.info("Reject a block with coinbase input script size out of range")
"Reject a block with coinbase input script size out of range")
self.move_tip(15)		self.move_tip(15)
b26 = self.next_block(26, spend=out[6])		b26 = self.next_block(26, spend=out[6])
b26.vtx[0].vin[0].scriptSig = b'\x00'		b26.vtx[0].vin[0].scriptSig = b"\x00"
b26.vtx[0].rehash()		b26.vtx[0].rehash()
# update_block causes the merkle root to get updated, even with no new		# update_block causes the merkle root to get updated, even with no new
# transactions, and updates the required state.		# transactions, and updates the required state.
b26 = self.update_block(26, [])		b26 = self.update_block(26, [])
self.send_blocks([b26], success=False,		self.send_blocks(
reject_reason='bad-cb-length', reconnect=True)		[b26], success=False, reject_reason="bad-cb-length", reconnect=True
		)

# Extend the b26 chain to make sure bitcoind isn't accepting b26		# Extend the b26 chain to make sure bitcoind isn't accepting b26
b27 = self.next_block(27, spend=out[7])		b27 = self.next_block(27, spend=out[7])
self.send_blocks([b27], False)		self.send_blocks([b27], False)

# Now try a too-large-coinbase script		# Now try a too-large-coinbase script
self.move_tip(15)		self.move_tip(15)
b28 = self.next_block(28, spend=out[6])		b28 = self.next_block(28, spend=out[6])
b28.vtx[0].vin[0].scriptSig = b'\x00' * 101		b28.vtx[0].vin[0].scriptSig = b"\x00" * 101
b28.vtx[0].rehash()		b28.vtx[0].rehash()
b28 = self.update_block(28, [])		b28 = self.update_block(28, [])
self.send_blocks([b28], success=False,		self.send_blocks(
reject_reason='bad-cb-length', reconnect=True)		[b28], success=False, reject_reason="bad-cb-length", reconnect=True
		)

# Extend the b28 chain to make sure bitcoind isn't accepting b28		# Extend the b28 chain to make sure bitcoind isn't accepting b28
b29 = self.next_block(29, spend=out[7])		b29 = self.next_block(29, spend=out[7])
self.send_blocks([b29], False)		self.send_blocks([b29], False)

# b30 has a max-sized coinbase scriptSig.		# b30 has a max-sized coinbase scriptSig.
self.move_tip(23)		self.move_tip(23)
b30 = self.next_block(30)		b30 = self.next_block(30)
b30.vtx[0].vin[0].scriptSig = b'\x00' * 100		b30.vtx[0].vin[0].scriptSig = b"\x00" * 100
b30.vtx[0].rehash()		b30.vtx[0].rehash()
b30 = self.update_block(30, [])		b30 = self.update_block(30, [])
self.send_blocks([b30], True)		self.send_blocks([b30], True)
self.save_spendable_output()		self.save_spendable_output()

b31 = self.next_block(31)		b31 = self.next_block(31)
self.save_spendable_output()		self.save_spendable_output()
b33 = self.next_block(33)		b33 = self.next_block(33)
self.save_spendable_output()		self.save_spendable_output()
b35 = self.next_block(35)		b35 = self.next_block(35)
self.save_spendable_output()		self.save_spendable_output()
self.send_blocks([b31, b33, b35], True)		self.send_blocks([b31, b33, b35], True)

# Check spending of a transaction in a block which failed to connect		# Check spending of a transaction in a block which failed to connect
#		#
# b6 (3)		# b6 (3)
# b12 (3) -> b13 (4) -> b15 (5) -> b23 (6) -> b30 (7) -> b31 (8) -> b33 (9) -> b35 (10)		# b12 (3) -> b13 (4) -> b15 (5) -> b23 (6) -> b30 (7) -> b31 (8) -> b33 (9) -> b35 (10)
# \-> b37 (11)		# \-> b37 (11)
# \-> b38 (11/37)		# \-> b38 (11/37)
#		#

# save 37's spendable output, but then double-spend out11 to invalidate		# save 37's spendable output, but then double-spend out11 to invalidate
# the block		# the block
self.log.info(		self.log.info(
"Reject a block spending transaction from a block which failed to connect")		"Reject a block spending transaction from a block which failed to connect"
		)
self.move_tip(35)		self.move_tip(35)
b37 = self.next_block(37, spend=out[11])		b37 = self.next_block(37, spend=out[11])
txout_b37 = b37.vtx[1]		txout_b37 = b37.vtx[1]
tx = self.create_and_sign_transaction(out[11], 0)		tx = self.create_and_sign_transaction(out[11], 0)
b37 = self.update_block(37, [tx])		b37 = self.update_block(37, [tx])
self.send_blocks([b37], success=False,		self.send_blocks(
reject_reason='bad-txns-inputs-missingorspent', reconnect=True)		[b37],
		success=False,
		reject_reason="bad-txns-inputs-missingorspent",
		reconnect=True,
		)

# attempt to spend b37's first non-coinbase tx, at which point b37 was		# attempt to spend b37's first non-coinbase tx, at which point b37 was
# still considered valid		# still considered valid
self.move_tip(35)		self.move_tip(35)
b38 = self.next_block(38, spend=txout_b37)		b38 = self.next_block(38, spend=txout_b37)
self.send_blocks([b38], success=False,		self.send_blocks(
reject_reason='bad-txns-inputs-missingorspent', reconnect=True)		[b38],
		success=False,
		reject_reason="bad-txns-inputs-missingorspent",
		reconnect=True,
		)

self.move_tip(35)		self.move_tip(35)
b39 = self.next_block(39)		b39 = self.next_block(39)
self.save_spendable_output()		self.save_spendable_output()
b41 = self.next_block(41)		b41 = self.next_block(41)
self.send_blocks([b39, b41], True)		self.send_blocks([b39, b41], True)

# Fork off of b39 to create a constant base again		# Fork off of b39 to create a constant base again
Show All 18 Lines	def run_test(self):
# the first transaction be non-coinbase, etc. The purpose of b44 is to		# the first transaction be non-coinbase, etc. The purpose of b44 is to
# make sure this works.		# make sure this works.
self.log.info("Build block 44 manually")		self.log.info("Build block 44 manually")
height = self.block_heights[self.tip.sha256] + 1		height = self.block_heights[self.tip.sha256] + 1
coinbase = create_coinbase(height, self.coinbase_pubkey)		coinbase = create_coinbase(height, self.coinbase_pubkey)
b44 = CBlock()		b44 = CBlock()
b44.nTime = self.tip.nTime + 1		b44.nTime = self.tip.nTime + 1
b44.hashPrevBlock = self.tip.sha256		b44.hashPrevBlock = self.tip.sha256
b44.nBits = 0x207fffff		b44.nBits = 0x207FFFFF
b44.vtx.append(coinbase)		b44.vtx.append(coinbase)
b44.hashMerkleRoot = b44.calc_merkle_root()		b44.hashMerkleRoot = b44.calc_merkle_root()
b44.solve()		b44.solve()
self.tip = b44		self.tip = b44
self.block_heights[b44.sha256] = height		self.block_heights[b44.sha256] = height
self.blocks[44] = b44		self.blocks[44] = b44
self.send_blocks([b44], True)		self.send_blocks([b44], True)

self.log.info("Reject a block with a non-coinbase as the first tx")		self.log.info("Reject a block with a non-coinbase as the first tx")
non_coinbase = self.create_tx(out[15], 0, 1)		non_coinbase = self.create_tx(out[15], 0, 1)
b45 = CBlock()		b45 = CBlock()
b45.nTime = self.tip.nTime + 1		b45.nTime = self.tip.nTime + 1
b45.hashPrevBlock = self.tip.sha256		b45.hashPrevBlock = self.tip.sha256
b45.nBits = 0x207fffff		b45.nBits = 0x207FFFFF
b45.vtx.append(non_coinbase)		b45.vtx.append(non_coinbase)
b45.hashMerkleRoot = b45.calc_merkle_root()		b45.hashMerkleRoot = b45.calc_merkle_root()
b45.calc_sha256()		b45.calc_sha256()
b45.solve()		b45.solve()
self.block_heights[b45.sha256] = self.block_heights[		self.block_heights[b45.sha256] = self.block_heights[self.tip.sha256] + 1
self.tip.sha256] + 1
self.tip = b45		self.tip = b45
self.blocks[45] = b45		self.blocks[45] = b45
self.send_blocks([b45], success=False,		self.send_blocks(
reject_reason='bad-cb-missing', reconnect=True)		[b45], success=False, reject_reason="bad-cb-missing", reconnect=True
		)

self.log.info("Reject a block with no transactions")		self.log.info("Reject a block with no transactions")
self.move_tip(44)		self.move_tip(44)
b46 = CBlock()		b46 = CBlock()
b46.nTime = b44.nTime + 1		b46.nTime = b44.nTime + 1
b46.hashPrevBlock = b44.sha256		b46.hashPrevBlock = b44.sha256
b46.nBits = 0x207fffff		b46.nBits = 0x207FFFFF
b46.vtx = []		b46.vtx = []
b46.hashMerkleRoot = 0		b46.hashMerkleRoot = 0
b46.solve()		b46.solve()
self.block_heights[b46.sha256] = self.block_heights[b44.sha256] + 1		self.block_heights[b46.sha256] = self.block_heights[b44.sha256] + 1
self.tip = b46		self.tip = b46
assert 46 not in self.blocks		assert 46 not in self.blocks
self.blocks[46] = b46		self.blocks[46] = b46
self.send_blocks([b46], success=False,		self.send_blocks(
reject_reason='bad-cb-missing', reconnect=True)		[b46], success=False, reject_reason="bad-cb-missing", reconnect=True
		)

self.log.info("Reject a block with invalid work")		self.log.info("Reject a block with invalid work")
self.move_tip(44)		self.move_tip(44)
b47 = self.next_block(47)		b47 = self.next_block(47)
target = uint256_from_compact(b47.nBits)		target = uint256_from_compact(b47.nBits)
while b47.sha256 <= target:		while b47.sha256 <= target:
# Rehash nonces until an invalid too-high-hash block is found.		# Rehash nonces until an invalid too-high-hash block is found.
b47.nNonce += 1		b47.nNonce += 1
b47.rehash()		b47.rehash()
self.send_blocks(		self.send_blocks(
[b47],		[b47], False, force_send=True, reject_reason="high-hash", reconnect=True
False,		)
force_send=True,
reject_reason='high-hash',
reconnect=True)

self.log.info("Reject a block with a timestamp >2 hours in the future")		self.log.info("Reject a block with a timestamp >2 hours in the future")
self.move_tip(44)		self.move_tip(44)
b48 = self.next_block(48)		b48 = self.next_block(48)
b48.nTime = int(time.time()) + 60 * 60 * 3		b48.nTime = int(time.time()) + 60 * 60 * 3
# Header timestamp has changed. Re-solve the block.		# Header timestamp has changed. Re-solve the block.
b48.solve()		b48.solve()
self.send_blocks([b48], False, force_send=True,		self.send_blocks([b48], False, force_send=True, reject_reason="time-too-new")
reject_reason='time-too-new')

self.log.info("Reject a block with invalid merkle hash")		self.log.info("Reject a block with invalid merkle hash")
self.move_tip(44)		self.move_tip(44)
b49 = self.next_block(49)		b49 = self.next_block(49)
b49.hashMerkleRoot += 1		b49.hashMerkleRoot += 1
b49.solve()		b49.solve()
self.send_blocks([b49], success=False,		self.send_blocks(
reject_reason='bad-txnmrklroot', reconnect=True)		[b49], success=False, reject_reason="bad-txnmrklroot", reconnect=True
		)

self.log.info("Reject a block with incorrect POW limit")		self.log.info("Reject a block with incorrect POW limit")
self.move_tip(44)		self.move_tip(44)
b50 = self.next_block(50)		b50 = self.next_block(50)
b50.nBits = b50.nBits - 1		b50.nBits = b50.nBits - 1
b50.solve()		b50.solve()
self.send_blocks(		self.send_blocks(
[b50],		[b50], False, force_send=True, reject_reason="bad-diffbits", reconnect=True
False,		)
force_send=True,
reject_reason='bad-diffbits',
reconnect=True)

self.log.info("Reject a block with two coinbase transactions")		self.log.info("Reject a block with two coinbase transactions")
self.move_tip(44)		self.move_tip(44)
b51 = self.next_block(51)		b51 = self.next_block(51)
cb2 = create_coinbase(51, self.coinbase_pubkey)		cb2 = create_coinbase(51, self.coinbase_pubkey)
b51 = self.update_block(51, [cb2])		b51 = self.update_block(51, [cb2])
self.send_blocks([b51], success=False,		self.send_blocks(
reject_reason='bad-tx-coinbase', reconnect=True)		[b51], success=False, reject_reason="bad-tx-coinbase", reconnect=True
		)

self.log.info("Reject a block with duplicate transactions")		self.log.info("Reject a block with duplicate transactions")
self.move_tip(44)		self.move_tip(44)
b52 = self.next_block(52, spend=out[15])		b52 = self.next_block(52, spend=out[15])
b52 = self.update_block(52, [b52.vtx[1]])		b52 = self.update_block(52, [b52.vtx[1]])
self.send_blocks([b52], success=False,		self.send_blocks(
reject_reason='tx-duplicate', reconnect=True)		[b52], success=False, reject_reason="tx-duplicate", reconnect=True
		)

# Test block timestamps		# Test block timestamps
# -> b31 (8) -> b33 (9) -> b35 (10) -> b39 (11) -> b42 (12) -> b43 (13) -> b53 (14) -> b55 (15)		# -> b31 (8) -> b33 (9) -> b35 (10) -> b39 (11) -> b42 (12) -> b43 (13) -> b53 (14) -> b55 (15)
# \-> b54 (15)		# \-> b54 (15)
#		#
self.move_tip(43)		self.move_tip(43)
b53 = self.next_block(53, spend=out[14])		b53 = self.next_block(53, spend=out[14])
self.send_blocks([b53], False)		self.send_blocks([b53], False)
self.save_spendable_output()		self.save_spendable_output()

self.log.info("Reject a block with timestamp before MedianTimePast")		self.log.info("Reject a block with timestamp before MedianTimePast")
b54 = self.next_block(54, spend=out[15])		b54 = self.next_block(54, spend=out[15])
b54.nTime = b35.nTime - 1		b54.nTime = b35.nTime - 1
b54.solve()		b54.solve()
self.send_blocks(		self.send_blocks(
[b54],		[b54], False, force_send=True, reject_reason="time-too-old", reconnect=True
False,		)
force_send=True,
reject_reason='time-too-old',
reconnect=True)

# valid timestamp		# valid timestamp
self.move_tip(53)		self.move_tip(53)
b55 = self.next_block(55, spend=out[15])		b55 = self.next_block(55, spend=out[15])
b55.nTime = b35.nTime		b55.nTime = b35.nTime
self.update_block(55, [])		self.update_block(55, [])
self.send_blocks([b55], True)		self.send_blocks([b55], True)
self.save_spendable_output()		self.save_spendable_output()
Show All 29 Lines	def run_test(self):
self.move_tip(55)		self.move_tip(55)
b57 = self.next_block(57)		b57 = self.next_block(57)
tx = self.create_and_sign_transaction(out[16], 1)		tx = self.create_and_sign_transaction(out[16], 1)
tx1 = self.create_tx(tx, 0, 1)		tx1 = self.create_tx(tx, 0, 1)
b57 = self.update_block(57, [tx, tx1])		b57 = self.update_block(57, [tx, tx1])

# b56 - copy b57, add a duplicate tx		# b56 - copy b57, add a duplicate tx
self.log.info(		self.log.info(
"Reject a block with a duplicate transaction in the Merkle Tree (but with a valid Merkle Root)")		"Reject a block with a duplicate transaction in the Merkle Tree (but with a"
		" valid Merkle Root)"
		)
self.move_tip(55)		self.move_tip(55)
b56 = copy.deepcopy(b57)		b56 = copy.deepcopy(b57)
self.blocks[56] = b56		self.blocks[56] = b56
assert_equal(len(b56.vtx), 3)		assert_equal(len(b56.vtx), 3)
b56 = self.update_block(56, [b57.vtx[2]])		b56 = self.update_block(56, [b57.vtx[2]])
assert_equal(b56.hash, b57.hash)		assert_equal(b56.hash, b57.hash)
self.send_blocks([b56], success=False,		self.send_blocks(
reject_reason='bad-txns-duplicate', reconnect=True)		[b56], success=False, reject_reason="bad-txns-duplicate", reconnect=True
		)

# b57p2 - a good block with 6 tx'es, don't submit until end		# b57p2 - a good block with 6 tx'es, don't submit until end
self.move_tip(55)		self.move_tip(55)
b57p2 = self.next_block("57p2")		b57p2 = self.next_block("57p2")
tx = self.create_and_sign_transaction(out[16], 1)		tx = self.create_and_sign_transaction(out[16], 1)
tx1 = self.create_tx(tx, 0, 1)		tx1 = self.create_tx(tx, 0, 1)
tx2 = self.create_tx(tx1, 0, 1)		tx2 = self.create_tx(tx1, 0, 1)
tx3 = self.create_tx(tx2, 0, 1)		tx3 = self.create_tx(tx2, 0, 1)
tx4 = self.create_tx(tx3, 0, 1)		tx4 = self.create_tx(tx3, 0, 1)
b57p2 = self.update_block("57p2", [tx, tx1, tx2, tx3, tx4])		b57p2 = self.update_block("57p2", [tx, tx1, tx2, tx3, tx4])

# b56p2 - copy b57p2, duplicate two non-consecutive tx's		# b56p2 - copy b57p2, duplicate two non-consecutive tx's
self.log.info(		self.log.info(
"Reject a block with two duplicate transactions in the Merkle Tree (but with a valid Merkle Root)")		"Reject a block with two duplicate transactions in the Merkle Tree (but"
		" with a valid Merkle Root)"
		)
self.move_tip(55)		self.move_tip(55)
b56p2 = copy.deepcopy(b57p2)		b56p2 = copy.deepcopy(b57p2)
self.blocks["b56p2"] = b56p2		self.blocks["b56p2"] = b56p2
assert_equal(len(b56p2.vtx), 6)		assert_equal(len(b56p2.vtx), 6)
b56p2 = self.update_block("b56p2", b56p2.vtx[4:6], reorder=False)		b56p2 = self.update_block("b56p2", b56p2.vtx[4:6], reorder=False)
assert_equal(b56p2.hash, b57p2.hash)		assert_equal(b56p2.hash, b57p2.hash)
self.send_blocks([b56p2], success=False,		self.send_blocks(
reject_reason='bad-txns-duplicate', reconnect=True)		[b56p2], success=False, reject_reason="bad-txns-duplicate", reconnect=True
		)

self.move_tip("57p2")		self.move_tip("57p2")
self.send_blocks([b57p2], True)		self.send_blocks([b57p2], True)

self.move_tip(57)		self.move_tip(57)
# The tip is not updated because 57p2 seen first		# The tip is not updated because 57p2 seen first
self.send_blocks([b57], False)		self.send_blocks([b57], False)
self.save_spendable_output()		self.save_spendable_output()

# Test a few invalid tx types		# Test a few invalid tx types
#		#
# -> b35 (10) -> b39 (11) -> b42 (12) -> b43 (13) -> b53 (14) -> b55 (15) -> b57 (16) -> b60 ()		# -> b35 (10) -> b39 (11) -> b42 (12) -> b43 (13) -> b53 (14) -> b55 (15) -> b57 (16) -> b60 ()
# \-> ??? (17)		# \-> ??? (17)
#		#

# tx with prevout.n out of range		# tx with prevout.n out of range
self.log.info(		self.log.info("Reject a block with a transaction with prevout.n out of range")
"Reject a block with a transaction with prevout.n out of range")
self.move_tip(57)		self.move_tip(57)
b58 = self.next_block(58, spend=out[17])		b58 = self.next_block(58, spend=out[17])
tx = CTransaction()		tx = CTransaction()
assert len(out[17].vout) < 42		assert len(out[17].vout) < 42
tx.vin.append(		tx.vin.append(
CTxIn(COutPoint(out[17].sha256, 42), CScript([OP_TRUE]), 0xffffffff))		CTxIn(COutPoint(out[17].sha256, 42), CScript([OP_TRUE]), 0xFFFFFFFF)
		)
tx.vout.append(CTxOut(0, b""))		tx.vout.append(CTxOut(0, b""))
pad_tx(tx)		pad_tx(tx)
tx.calc_sha256()		tx.calc_sha256()
b58 = self.update_block(58, [tx])		b58 = self.update_block(58, [tx])
self.send_blocks([b58], success=False,		self.send_blocks(
reject_reason='bad-txns-inputs-missingorspent', reconnect=True)		[b58],
		success=False,
		reject_reason="bad-txns-inputs-missingorspent",
		reconnect=True,
		)

# tx with output value > input value		# tx with output value > input value
self.log.info(		self.log.info("Reject a block with a transaction with outputs > inputs")
"Reject a block with a transaction with outputs > inputs")
self.move_tip(57)		self.move_tip(57)
b59 = self.next_block(59)		b59 = self.next_block(59)
tx = self.create_and_sign_transaction(out[17], 51 * COIN)		tx = self.create_and_sign_transaction(out[17], 51 * COIN)
b59 = self.update_block(59, [tx])		b59 = self.update_block(59, [tx])
self.send_blocks([b59], success=False,		self.send_blocks(
reject_reason='bad-txns-in-belowout', reconnect=True)		[b59], success=False, reject_reason="bad-txns-in-belowout", reconnect=True
		)

# reset to good chain		# reset to good chain
self.move_tip(57)		self.move_tip(57)
b60 = self.next_block(60)		b60 = self.next_block(60)
self.send_blocks([b60], True)		self.send_blocks([b60], True)
self.save_spendable_output()		self.save_spendable_output()

# Test BIP30 (reject duplicate)		# Test BIP30 (reject duplicate)
#		#
# -> b39 (11) -> b42 (12) -> b43 (13) -> b53 (14) -> b55 (15) -> b57 (16) -> b60 ()		# -> b39 (11) -> b42 (12) -> b43 (13) -> b53 (14) -> b55 (15) -> b57 (16) -> b60 ()
# \-> b61 ()		# \-> b61 ()
#		#
# Blocks are not allowed to contain a transaction whose id matches that of an earlier,		# Blocks are not allowed to contain a transaction whose id matches that of an earlier,
# not-fully-spent transaction in the same chain. To test, make identical coinbases;		# not-fully-spent transaction in the same chain. To test, make identical coinbases;
# the second one should be rejected. See also CVE-2012-1909.		# the second one should be rejected. See also CVE-2012-1909.
#		#
self.log.info(		self.log.info(
"Reject a block with a transaction with a duplicate hash of a previous transaction (BIP30)")		"Reject a block with a transaction with a duplicate hash of a previous"
		" transaction (BIP30)"
		)
self.move_tip(60)		self.move_tip(60)
b61 = self.next_block(61)		b61 = self.next_block(61)
b61.vtx[0].vin[0].scriptSig = DUPLICATE_COINBASE_SCRIPT_SIG		b61.vtx[0].vin[0].scriptSig = DUPLICATE_COINBASE_SCRIPT_SIG
b61.vtx[0].rehash()		b61.vtx[0].rehash()
b61 = self.update_block(61, [])		b61 = self.update_block(61, [])
assert_equal(duplicate_tx.serialize(), b61.vtx[0].serialize())		assert_equal(duplicate_tx.serialize(), b61.vtx[0].serialize())
self.send_blocks([b61], success=False,		self.send_blocks(
reject_reason='bad-txns-BIP30', reconnect=True)		[b61], success=False, reject_reason="bad-txns-BIP30", reconnect=True
		)

# Test BIP30 (allow duplicate if spent)		# Test BIP30 (allow duplicate if spent)
#		#
# -> b57 (16) -> b60 ()		# -> b57 (16) -> b60 ()
# \-> b_spend_dup_cb (b_dup_cb) -> b_dup_2 ()		# \-> b_spend_dup_cb (b_dup_cb) -> b_dup_2 ()
#		#
self.move_tip(57)		self.move_tip(57)
b_spend_dup_cb = self.next_block('spend_dup_cb')		b_spend_dup_cb = self.next_block("spend_dup_cb")
tx = CTransaction()		tx = CTransaction()
tx.vin.append(CTxIn(COutPoint(duplicate_tx.sha256, 0)))		tx.vin.append(CTxIn(COutPoint(duplicate_tx.sha256, 0)))
tx.vout.append(CTxOut(0, CScript([OP_TRUE])))		tx.vout.append(CTxOut(0, CScript([OP_TRUE])))
self.sign_tx(tx, duplicate_tx)		self.sign_tx(tx, duplicate_tx)
tx.rehash()		tx.rehash()
b_spend_dup_cb = self.update_block('spend_dup_cb', [tx])		b_spend_dup_cb = self.update_block("spend_dup_cb", [tx])

b_dup_2 = self.next_block('dup_2')		b_dup_2 = self.next_block("dup_2")
b_dup_2.vtx[0].vin[0].scriptSig = DUPLICATE_COINBASE_SCRIPT_SIG		b_dup_2.vtx[0].vin[0].scriptSig = DUPLICATE_COINBASE_SCRIPT_SIG
b_dup_2.vtx[0].rehash()		b_dup_2.vtx[0].rehash()
b_dup_2 = self.update_block('dup_2', [])		b_dup_2 = self.update_block("dup_2", [])
assert_equal(duplicate_tx.serialize(), b_dup_2.vtx[0].serialize())		assert_equal(duplicate_tx.serialize(), b_dup_2.vtx[0].serialize())
assert_equal(		assert_equal(
self.nodes[0].gettxout(		self.nodes[0].gettxout(txid=duplicate_tx.hash, n=0)["confirmations"], 119
txid=duplicate_tx.hash,		)
n=0)['confirmations'],
119)
self.send_blocks([b_spend_dup_cb, b_dup_2], success=True)		self.send_blocks([b_spend_dup_cb, b_dup_2], success=True)
# The duplicate has less confirmations		# The duplicate has less confirmations
assert_equal(		assert_equal(
self.nodes[0].gettxout(		self.nodes[0].gettxout(txid=duplicate_tx.hash, n=0)["confirmations"], 1
txid=duplicate_tx.hash,		)
n=0)['confirmations'],
1)

# Test tx.isFinal is properly rejected (not an exhaustive tx.isFinal test, that should be in data-driven transaction tests)		# Test tx.isFinal is properly rejected (not an exhaustive tx.isFinal test, that should be in data-driven transaction tests)
#		#
# -> b_spend_dup_cb (b_dup_cb) -> b_dup_2 ()		# -> b_spend_dup_cb (b_dup_cb) -> b_dup_2 ()
# \-> b62 (18)		# \-> b62 (18)
#		#
self.log.info(		self.log.info("Reject a block with a transaction with a nonfinal locktime")
"Reject a block with a transaction with a nonfinal locktime")		self.move_tip("dup_2")
self.move_tip('dup_2')
b62 = self.next_block(62)		b62 = self.next_block(62)
tx = CTransaction()		tx = CTransaction()
tx.nLockTime = 0xffffffff # this locktime is non-final		tx.nLockTime = 0xFFFFFFFF # this locktime is non-final
# don't set nSequence		# don't set nSequence
tx.vin.append(CTxIn(COutPoint(out[18].sha256, 0)))		tx.vin.append(CTxIn(COutPoint(out[18].sha256, 0)))
tx.vout.append(CTxOut(0, CScript([OP_TRUE])))		tx.vout.append(CTxOut(0, CScript([OP_TRUE])))
assert tx.vin[0].nSequence < 0xffffffff		assert tx.vin[0].nSequence < 0xFFFFFFFF
tx.calc_sha256()		tx.calc_sha256()
b62 = self.update_block(62, [tx])		b62 = self.update_block(62, [tx])
self.send_blocks(		self.send_blocks(
[b62],		[b62], success=False, reject_reason="bad-txns-nonfinal", reconnect=True
success=False,		)
reject_reason='bad-txns-nonfinal',
reconnect=True)

# Test a non-final coinbase is also rejected		# Test a non-final coinbase is also rejected
#		#
# -> b_spend_dup_cb (b_dup_cb) -> b_dup_2 ()		# -> b_spend_dup_cb (b_dup_cb) -> b_dup_2 ()
# \-> b63 (-)		# \-> b63 (-)
#		#
self.log.info(		self.log.info(
"Reject a block with a coinbase transaction with a nonfinal locktime")		"Reject a block with a coinbase transaction with a nonfinal locktime"
self.move_tip('dup_2')		)
		self.move_tip("dup_2")
b63 = self.next_block(63)		b63 = self.next_block(63)
b63.vtx[0].nLockTime = 0xffffffff		b63.vtx[0].nLockTime = 0xFFFFFFFF
b63.vtx[0].vin[0].nSequence = 0xDEADBEEF		b63.vtx[0].vin[0].nSequence = 0xDEADBEEF
b63.vtx[0].rehash()		b63.vtx[0].rehash()
b63 = self.update_block(63, [])		b63 = self.update_block(63, [])
self.send_blocks(		self.send_blocks(
[b63],		[b63], success=False, reject_reason="bad-txns-nonfinal", reconnect=True
success=False,		)
reject_reason='bad-txns-nonfinal',
reconnect=True)

# This checks that a block with a bloated VARINT between the block_header and the array of tx such that		# This checks that a block with a bloated VARINT between the block_header and the array of tx such that
# the block is > LEGACY_MAX_BLOCK_SIZE with the bloated varint, but <= LEGACY_MAX_BLOCK_SIZE without the bloated varint,		# the block is > LEGACY_MAX_BLOCK_SIZE with the bloated varint, but <= LEGACY_MAX_BLOCK_SIZE without the bloated varint,
# does not cause a subsequent, identical block with canonical encoding to be rejected. The test does not		# does not cause a subsequent, identical block with canonical encoding to be rejected. The test does not
# care whether the bloated block is accepted or rejected; it only cares that the second block is accepted.		# care whether the bloated block is accepted or rejected; it only cares that the second block is accepted.
#		#
# What matters is that the receiving node should not reject the bloated block, and then reject the canonical		# What matters is that the receiving node should not reject the bloated block, and then reject the canonical
# block on the basis that it's the same as an already-rejected block (which would be a consensus failure.)		# block on the basis that it's the same as an already-rejected block (which would be a consensus failure.)
#		#
# -> b_spend_dup_cb (b_dup_cb) -> b_dup_2 () -> b64 (18)		# -> b_spend_dup_cb (b_dup_cb) -> b_dup_2 () -> b64 (18)
# \		# \
# b64a (18)		# b64a (18)
# b64a is a bloated block (non-canonical varint)		# b64a is a bloated block (non-canonical varint)
# b64 is a good block (same as b64 but w/ canonical varint)		# b64 is a good block (same as b64 but w/ canonical varint)
#		#
self.log.info(		self.log.info(
"Accept a valid block even if a bloated version of the block has previously been sent")		"Accept a valid block even if a bloated version of the block has previously"
self.move_tip('dup_2')		" been sent"
		)
		self.move_tip("dup_2")
regular_block = self.next_block("64a", spend=out[18])		regular_block = self.next_block("64a", spend=out[18])

# make it a "broken_block," with non-canonical serialization		# make it a "broken_block," with non-canonical serialization
b64a = CBrokenBlock(regular_block)		b64a = CBrokenBlock(regular_block)
b64a.initialize(regular_block)		b64a.initialize(regular_block)
self.blocks["64a"] = b64a		self.blocks["64a"] = b64a
self.tip = b64a		self.tip = b64a
tx = CTransaction()		tx = CTransaction()

# use canonical serialization to calculate size		# use canonical serialization to calculate size
script_length = LEGACY_MAX_BLOCK_SIZE - \		script_length = LEGACY_MAX_BLOCK_SIZE - len(b64a.normal_serialize()) - 69
len(b64a.normal_serialize()) - 69		script_output = CScript([b"\x00" * script_length])
script_output = CScript([b'\x00' * script_length])
tx.vout.append(CTxOut(0, script_output))		tx.vout.append(CTxOut(0, script_output))
tx.vin.append(CTxIn(COutPoint(b64a.vtx[1].sha256, 0)))		tx.vin.append(CTxIn(COutPoint(b64a.vtx[1].sha256, 0)))
b64a = self.update_block("64a", [tx])		b64a = self.update_block("64a", [tx])
assert_equal(len(b64a.serialize()), LEGACY_MAX_BLOCK_SIZE + 8)		assert_equal(len(b64a.serialize()), LEGACY_MAX_BLOCK_SIZE + 8)
self.send_blocks([b64a], success=False,		self.send_blocks(
reject_reason='non-canonical ReadCompactSize()')		[b64a], success=False, reject_reason="non-canonical ReadCompactSize()"
		)

# bitcoind doesn't disconnect us for sending a bloated block, but if we subsequently		# bitcoind doesn't disconnect us for sending a bloated block, but if we subsequently
# resend the header message, it won't send us the getdata message again. Just		# resend the header message, it won't send us the getdata message again. Just
# disconnect and reconnect and then call send_blocks.		# disconnect and reconnect and then call send_blocks.
# TODO: improve this test to be less dependent on P2P DOS behaviour.		# TODO: improve this test to be less dependent on P2P DOS behaviour.
node.disconnect_p2ps()		node.disconnect_p2ps()
self.reconnect_p2p()		self.reconnect_p2p()

self.move_tip('dup_2')		self.move_tip("dup_2")
b64 = CBlock(b64a)		b64 = CBlock(b64a)
b64.vtx = copy.deepcopy(b64a.vtx)		b64.vtx = copy.deepcopy(b64a.vtx)
assert_equal(b64.hash, b64a.hash)		assert_equal(b64.hash, b64a.hash)
assert_equal(len(b64.serialize()), LEGACY_MAX_BLOCK_SIZE)		assert_equal(len(b64.serialize()), LEGACY_MAX_BLOCK_SIZE)
self.blocks[64] = b64		self.blocks[64] = b64
b64 = self.update_block(64, [])		b64 = self.update_block(64, [])
self.send_blocks([b64], True)		self.send_blocks([b64], True)
self.save_spendable_output()		self.save_spendable_output()

# Spend an output created in the block itself		# Spend an output created in the block itself
#		#
# -> b_dup_2 () -> b64 (18) -> b65 (19)		# -> b_dup_2 () -> b64 (18) -> b65 (19)
#		#
self.log.info(		self.log.info(
"Accept a block with a transaction spending an output created in the same block")		"Accept a block with a transaction spending an output created in the same"
		" block"
		)
self.move_tip(64)		self.move_tip(64)
b65 = self.next_block(65)		b65 = self.next_block(65)
tx1 = self.create_and_sign_transaction(out[19], out[19].vout[0].nValue)		tx1 = self.create_and_sign_transaction(out[19], out[19].vout[0].nValue)
tx2 = self.create_and_sign_transaction(tx1, 0)		tx2 = self.create_and_sign_transaction(tx1, 0)
b65 = self.update_block(65, [tx1, tx2])		b65 = self.update_block(65, [tx1, tx2])
self.send_blocks([b65], True)		self.send_blocks([b65], True)
self.save_spendable_output()		self.save_spendable_output()

# Attempt to double-spend a transaction created in a block		# Attempt to double-spend a transaction created in a block
#		#
# -> b64 (18) -> b65 (19)		# -> b64 (18) -> b65 (19)
# \-> b67 (20)		# \-> b67 (20)
#		#
#		#
self.log.info(		self.log.info(
"Reject a block with a transaction double spending a transaction created in the same block")		"Reject a block with a transaction double spending a transaction created in"
		" the same block"
		)
self.move_tip(65)		self.move_tip(65)
b67 = self.next_block(67)		b67 = self.next_block(67)
tx1 = self.create_and_sign_transaction(out[20], out[20].vout[0].nValue)		tx1 = self.create_and_sign_transaction(out[20], out[20].vout[0].nValue)
tx2 = self.create_and_sign_transaction(tx1, 1)		tx2 = self.create_and_sign_transaction(tx1, 1)
tx3 = self.create_and_sign_transaction(tx1, 2)		tx3 = self.create_and_sign_transaction(tx1, 2)
b67 = self.update_block(67, [tx1, tx2, tx3])		b67 = self.update_block(67, [tx1, tx2, tx3])
self.send_blocks([b67], success=False,		self.send_blocks(
reject_reason='bad-txns-inputs-missingorspent', reconnect=True)		[b67],
		success=False,
		reject_reason="bad-txns-inputs-missingorspent",
		reconnect=True,
		)

# More tests of block subsidy		# More tests of block subsidy
#		#
# -> b64 (18) -> b65 (19) -> b69 (20)		# -> b64 (18) -> b65 (19) -> b69 (20)
# \-> b68 (20)		# \-> b68 (20)
#		#
# b68 - coinbase with an extra 10 satoshis,		# b68 - coinbase with an extra 10 satoshis,
# creates a tx that has 9 satoshis from out[20] go to fees		# creates a tx that has 9 satoshis from out[20] go to fees
# this fails because the coinbase is trying to claim 1 satoshi too much in fees		# this fails because the coinbase is trying to claim 1 satoshi too much in fees
#		#
# b69 - coinbase with extra 10 satoshis, and a tx that gives a 10 satoshi fee		# b69 - coinbase with extra 10 satoshis, and a tx that gives a 10 satoshi fee
# this succeeds		# this succeeds
#		#
self.log.info(		self.log.info(
"Reject a block trying to claim too much subsidy in the coinbase transaction")		"Reject a block trying to claim too much subsidy in the coinbase"
		" transaction"
		)
self.move_tip(65)		self.move_tip(65)
b68 = self.next_block(68, additional_coinbase_value=10)		b68 = self.next_block(68, additional_coinbase_value=10)
tx = self.create_and_sign_transaction(		tx = self.create_and_sign_transaction(out[20], out[20].vout[0].nValue - 9)
out[20], out[20].vout[0].nValue - 9)
b68 = self.update_block(68, [tx])		b68 = self.update_block(68, [tx])
self.send_blocks([b68], success=False,		self.send_blocks(
reject_reason='bad-cb-amount', reconnect=True)		[b68], success=False, reject_reason="bad-cb-amount", reconnect=True
		)

self.log.info(		self.log.info(
"Accept a block claiming the correct subsidy in the coinbase transaction")		"Accept a block claiming the correct subsidy in the coinbase transaction"
		)
self.move_tip(65)		self.move_tip(65)
b69 = self.next_block(69, additional_coinbase_value=10)		b69 = self.next_block(69, additional_coinbase_value=10)
tx = self.create_and_sign_transaction(		tx = self.create_and_sign_transaction(out[20], out[20].vout[0].nValue - 10)
out[20], out[20].vout[0].nValue - 10)
self.update_block(69, [tx])		self.update_block(69, [tx])
self.send_blocks([b69], True)		self.send_blocks([b69], True)
self.save_spendable_output()		self.save_spendable_output()

# Test spending the outpoint of a non-existent transaction		# Test spending the outpoint of a non-existent transaction
#		#
# -> b65 (19) -> b69 (20)		# -> b65 (19) -> b69 (20)
# \-> b70 (21)		# \-> b70 (21)
#		#
self.log.info(		self.log.info(
"Reject a block containing a transaction spending from a non-existent input")		"Reject a block containing a transaction spending from a non-existent input"
		)
self.move_tip(69)		self.move_tip(69)
b70 = self.next_block(70, spend=out[21])		b70 = self.next_block(70, spend=out[21])
bogus_tx = CTransaction()		bogus_tx = CTransaction()
bogus_tx.sha256 = uint256_from_str(		bogus_tx.sha256 = uint256_from_str(
b"23c70ed7c0506e9178fc1a987f40a33946d4ad4c962b5ae3a52546da53af0c5c")		b"23c70ed7c0506e9178fc1a987f40a33946d4ad4c962b5ae3a52546da53af0c5c"
		)
tx = CTransaction()		tx = CTransaction()
tx.vin.append(CTxIn(COutPoint(bogus_tx.sha256, 0), b"", 0xffffffff))		tx.vin.append(CTxIn(COutPoint(bogus_tx.sha256, 0), b"", 0xFFFFFFFF))
tx.vout.append(CTxOut(1, b""))		tx.vout.append(CTxOut(1, b""))
pad_tx(tx)		pad_tx(tx)
b70 = self.update_block(70, [tx])		b70 = self.update_block(70, [tx])
self.send_blocks([b70], success=False,		self.send_blocks(
reject_reason='bad-txns-inputs-missingorspent', reconnect=True)		[b70],
		success=False,
		reject_reason="bad-txns-inputs-missingorspent",
		reconnect=True,
		)

# Test accepting an invalid block which has the same hash as a valid one (via merkle tree tricks)		# Test accepting an invalid block which has the same hash as a valid one (via merkle tree tricks)
#		#
# -> b65 (19) -> b69 (20) -> b72 (21)		# -> b65 (19) -> b69 (20) -> b72 (21)
# \-> b71 (21)		# \-> b71 (21)
#		#
# b72 is a good block.		# b72 is a good block.
# b71 is a copy of 72, but re-adds one of its transactions. However,		# b71 is a copy of 72, but re-adds one of its transactions. However,
# it has the same hash as b72.		# it has the same hash as b72.
self.log.info(		self.log.info(
"Reject a block containing a duplicate transaction but with the same Merkle root (Merkle tree malleability")		"Reject a block containing a duplicate transaction but with the same Merkle"
		" root (Merkle tree malleability"
		)
self.move_tip(69)		self.move_tip(69)
b72 = self.next_block(72)		b72 = self.next_block(72)
tx1 = self.create_and_sign_transaction(out[21], 2)		tx1 = self.create_and_sign_transaction(out[21], 2)
tx2 = self.create_and_sign_transaction(tx1, 1)		tx2 = self.create_and_sign_transaction(tx1, 1)
b72 = self.update_block(72, [tx1, tx2]) # now tip is 72		b72 = self.update_block(72, [tx1, tx2]) # now tip is 72
b71 = copy.deepcopy(b72)		b71 = copy.deepcopy(b72)
# add duplicate last transaction		# add duplicate last transaction
b71.vtx.append(b72.vtx[-1])		b71.vtx.append(b72.vtx[-1])
# b71 builds off b69		# b71 builds off b69
self.block_heights[b71.sha256] = self.block_heights[b69.sha256] + 1		self.block_heights[b71.sha256] = self.block_heights[b69.sha256] + 1
self.blocks[71] = b71		self.blocks[71] = b71

assert_equal(len(b71.vtx), 4)		assert_equal(len(b71.vtx), 4)
assert_equal(len(b72.vtx), 3)		assert_equal(len(b72.vtx), 3)
assert_equal(b72.sha256, b71.sha256)		assert_equal(b72.sha256, b71.sha256)

self.move_tip(71)		self.move_tip(71)
self.send_blocks([b71], success=False,		self.send_blocks(
reject_reason='bad-txns-duplicate', reconnect=True)		[b71], success=False, reject_reason="bad-txns-duplicate", reconnect=True
		)

self.move_tip(72)		self.move_tip(72)
self.send_blocks([b72], True)		self.send_blocks([b72], True)
self.save_spendable_output()		self.save_spendable_output()

b75 = self.next_block(75)		b75 = self.next_block(75)
self.save_spendable_output()		self.save_spendable_output()
b76 = self.next_block(76)		b76 = self.next_block(76)
▲ Show 20 Lines • Show All 59 Lines • ▼ Show 20 Lines	def run_test(self):
assert_equal(len(mempool), 2)		assert_equal(len(mempool), 2)
assert tx78.hash in mempool		assert tx78.hash in mempool
assert tx79.hash in mempool		assert tx79.hash in mempool

# Test invalid opcodes in dead execution paths.		# Test invalid opcodes in dead execution paths.
#		#
# -> b81 (26) -> b82 (27) -> b83 (28)		# -> b81 (26) -> b82 (27) -> b83 (28)
#		#
self.log.info(		self.log.info("Accept a block with invalid opcodes in dead execution paths")
"Accept a block with invalid opcodes in dead execution paths")
b83 = self.next_block(83)		b83 = self.next_block(83)
op_codes = [OP_IF, OP_INVALIDOPCODE, OP_ELSE, OP_TRUE, OP_ENDIF]		op_codes = [OP_IF, OP_INVALIDOPCODE, OP_ELSE, OP_TRUE, OP_ENDIF]
script = CScript(op_codes)		script = CScript(op_codes)
tx1 = self.create_and_sign_transaction(		tx1 = self.create_and_sign_transaction(out[28], out[28].vout[0].nValue, script)
out[28], out[28].vout[0].nValue, script)

tx2 = self.create_and_sign_transaction(tx1, 0, CScript([OP_TRUE]))		tx2 = self.create_and_sign_transaction(tx1, 0, CScript([OP_TRUE]))
tx2.vin[0].scriptSig = CScript([OP_FALSE])		tx2.vin[0].scriptSig = CScript([OP_FALSE])
tx2.rehash()		tx2.rehash()

b83 = self.update_block(83, [tx1, tx2])		b83 = self.update_block(83, [tx1, tx2])
self.send_blocks([b83], True)		self.send_blocks([b83], True)
self.save_spendable_output()		self.save_spendable_output()
▲ Show 20 Lines • Show All 41 Lines • ▼ Show 20 Lines
b88 = self.next_block(88, spend=out[31])		b88 = self.next_block(88, spend=out[31])
self.send_blocks([b88], True)		self.send_blocks([b88], True)
self.save_spendable_output()		self.save_spendable_output()

# trying to spend the OP_RETURN output is rejected		# trying to spend the OP_RETURN output is rejected
b89a = self.next_block("89a", spend=out[32])		b89a = self.next_block("89a", spend=out[32])
tx = self.create_tx(tx1, 0, 0, CScript([OP_TRUE]))		tx = self.create_tx(tx1, 0, 0, CScript([OP_TRUE]))
b89a = self.update_block("89a", [tx])		b89a = self.update_block("89a", [tx])
self.send_blocks([b89a], success=False,		self.send_blocks(
reject_reason='bad-txns-inputs-missingorspent', reconnect=True)		[b89a],
		success=False,
		reject_reason="bad-txns-inputs-missingorspent",
		reconnect=True,
		)

self.log.info(		self.log.info("Test a re-org of one week's worth of blocks (1088 blocks)")
"Test a re-org of one week's worth of blocks (1088 blocks)")

self.move_tip(88)		self.move_tip(88)
LARGE_REORG_SIZE = 1088		LARGE_REORG_SIZE = 1088
blocks = []		blocks = []
spend = out[32]		spend = out[32]
for i in range(89, LARGE_REORG_SIZE + 89):		for i in range(89, LARGE_REORG_SIZE + 89):
b = self.next_block(i, spend)		b = self.next_block(i, spend)
tx = CTransaction()		tx = CTransaction()
script_length = LEGACY_MAX_BLOCK_SIZE - len(b.serialize()) - 69		script_length = LEGACY_MAX_BLOCK_SIZE - len(b.serialize()) - 69
script_output = CScript([b'\x00' * script_length])		script_output = CScript([b"\x00" * script_length])
tx.vout.append(CTxOut(0, script_output))		tx.vout.append(CTxOut(0, script_output))
tx.vin.append(CTxIn(COutPoint(b.vtx[1].sha256, 0)))		tx.vin.append(CTxIn(COutPoint(b.vtx[1].sha256, 0)))
b = self.update_block(i, [tx])		b = self.update_block(i, [tx])
assert_equal(len(b.serialize()), LEGACY_MAX_BLOCK_SIZE)		assert_equal(len(b.serialize()), LEGACY_MAX_BLOCK_SIZE)
blocks.append(b)		blocks.append(b)
self.save_spendable_output()		self.save_spendable_output()
spend = self.get_spendable_output()		spend = self.get_spendable_output()

Show All 14 Lines
# ... and re-org back to the first chain		# ... and re-org back to the first chain
self.move_tip(chain1_tip)		self.move_tip(chain1_tip)
block = self.next_block(chain1_tip + 1)		block = self.next_block(chain1_tip + 1)
self.send_blocks([block], False, force_send=True)		self.send_blocks([block], False, force_send=True)
block = self.next_block(chain1_tip + 2)		block = self.next_block(chain1_tip + 2)
self.send_blocks([block], True, timeout=2440)		self.send_blocks([block], True, timeout=2440)

self.log.info("Reject a block with an invalid block header version")		self.log.info("Reject a block with an invalid block header version")
b_v1 = self.next_block('b_v1', version=1)		b_v1 = self.next_block("b_v1", version=1)
self.send_blocks(		self.send_blocks(
[b_v1],		[b_v1],
success=False,		success=False,
force_send=True,		force_send=True,
reject_reason='bad-version(0x00000001)',		reject_reason="bad-version(0x00000001)",
reconnect=True)		reconnect=True,
		)

self.move_tip(chain1_tip + 2)		self.move_tip(chain1_tip + 2)
b_cb34 = self.next_block('b_cb34')		b_cb34 = self.next_block("b_cb34")
b_cb34.vtx[0].vin[0].scriptSig = b_cb34.vtx[0].vin[0].scriptSig[:-1]		b_cb34.vtx[0].vin[0].scriptSig = b_cb34.vtx[0].vin[0].scriptSig[:-1]
b_cb34.vtx[0].rehash()		b_cb34.vtx[0].rehash()
b_cb34.hashMerkleRoot = b_cb34.calc_merkle_root()		b_cb34.hashMerkleRoot = b_cb34.calc_merkle_root()
b_cb34.solve()		b_cb34.solve()
self.send_blocks(		self.send_blocks(
[b_cb34],		[b_cb34], success=False, reject_reason="bad-cb-height", reconnect=True
success=False,		)
reject_reason='bad-cb-height',
reconnect=True)

# Helper methods		# Helper methods
################		################

def add_transactions_to_block(self, block, tx_list):		def add_transactions_to_block(self, block, tx_list):
[tx.rehash() for tx in tx_list]		[tx.rehash() for tx in tx_list]
block.vtx.extend(tx_list)		block.vtx.extend(tx_list)

# this is a little handier to use than the version in blocktools.py		# this is a little handier to use than the version in blocktools.py
def create_tx(self, spend_tx, n, value, script=CScript([OP_TRUE])):		def create_tx(self, spend_tx, n, value, script=CScript([OP_TRUE])):
return create_tx_with_script(		return create_tx_with_script(spend_tx, n, amount=value, script_pub_key=script)
spend_tx, n, amount=value, script_pub_key=script)

# sign a transaction, using the key we know about		# sign a transaction, using the key we know about
# this signs input 0 in tx, which is assumed to be spending output n in		# this signs input 0 in tx, which is assumed to be spending output n in
# spend_tx		# spend_tx
def sign_tx(self, tx, spend_tx):		def sign_tx(self, tx, spend_tx):
scriptPubKey = bytearray(spend_tx.vout[0].scriptPubKey)		scriptPubKey = bytearray(spend_tx.vout[0].scriptPubKey)
if (scriptPubKey[0] == OP_TRUE): # an anyone-can-spend		if scriptPubKey[0] == OP_TRUE: # an anyone-can-spend
tx.vin[0].scriptSig = CScript()		tx.vin[0].scriptSig = CScript()
return		return
sighash = SignatureHashForkId(		sighash = SignatureHashForkId(
spend_tx.vout[0].scriptPubKey, tx, 0, SIGHASH_ALL \| SIGHASH_FORKID, spend_tx.vout[0].nValue)		spend_tx.vout[0].scriptPubKey,
		tx,
		0,
		SIGHASH_ALL \| SIGHASH_FORKID,
		spend_tx.vout[0].nValue,
		)
tx.vin[0].scriptSig = CScript(		tx.vin[0].scriptSig = CScript(
[self.coinbase_key.sign_ecdsa(sighash) + bytes(bytearray([SIGHASH_ALL \| SIGHASH_FORKID]))])		[
		self.coinbase_key.sign_ecdsa(sighash)
		+ bytes(bytearray([SIGHASH_ALL \| SIGHASH_FORKID]))
		]
		)

def create_and_sign_transaction(		def create_and_sign_transaction(self, spend_tx, value, script=CScript([OP_TRUE])):
self, spend_tx, value, script=CScript([OP_TRUE])):
tx = self.create_tx(spend_tx, 0, value, script)		tx = self.create_tx(spend_tx, 0, value, script)
self.sign_tx(tx, spend_tx)		self.sign_tx(tx, spend_tx)
tx.rehash()		tx.rehash()
return tx		return tx

def next_block(self, number, spend=None, additional_coinbase_value=0,		def next_block(
script=CScript([OP_TRUE]), *, version=4):		self,
		number,
		spend=None,
		additional_coinbase_value=0,
		script=CScript([OP_TRUE]),
		*,
		version=4,
		):
if self.tip is None:		if self.tip is None:
base_block_hash = self.genesis_hash		base_block_hash = self.genesis_hash
block_time = int(time.time()) + 1		block_time = int(time.time()) + 1
else:		else:
base_block_hash = self.tip.sha256		base_block_hash = self.tip.sha256
block_time = self.tip.nTime + 1		block_time = self.tip.nTime + 1
# First create the coinbase		# First create the coinbase
height = self.block_heights[base_block_hash] + 1		height = self.block_heights[base_block_hash] + 1
coinbase = create_coinbase(height, self.coinbase_pubkey)		coinbase = create_coinbase(height, self.coinbase_pubkey)
coinbase.vout[0].nValue += additional_coinbase_value		coinbase.vout[0].nValue += additional_coinbase_value
coinbase.rehash()		coinbase.rehash()
if spend is None:		if spend is None:
block = create_block(		block = create_block(base_block_hash, coinbase, block_time, version=version)
base_block_hash,
coinbase,
block_time,
version=version)
else:		else:
# all but one satoshi to fees		# all but one satoshi to fees
coinbase.vout[0].nValue += spend.vout[0].nValue - 1		coinbase.vout[0].nValue += spend.vout[0].nValue - 1
coinbase.rehash()		coinbase.rehash()
block = create_block(		block = create_block(base_block_hash, coinbase, block_time, version=version)
base_block_hash,
coinbase,
block_time,
version=version)
# spend 1 satoshi		# spend 1 satoshi
tx = self.create_tx(spend, 0, 1, script)		tx = self.create_tx(spend, 0, 1, script)
self.sign_tx(tx, spend)		self.sign_tx(tx, spend)
self.add_transactions_to_block(block, [tx])		self.add_transactions_to_block(block, [tx])
block.hashMerkleRoot = block.calc_merkle_root()		block.hashMerkleRoot = block.calc_merkle_root()
# Block is created. Find a valid nonce.		# Block is created. Find a valid nonce.
block.solve()		block.solve()
self.tip = block		self.tip = block
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def reconnect_p2p(self, timeout=60):		def reconnect_p2p(self, timeout=60):
"""Tear down and bootstrap the P2P connection to the node.		"""Tear down and bootstrap the P2P connection to the node.

The node gets disconnected several times in this test. This helper		The node gets disconnected several times in this test. This helper
method reconnects the p2p and restarts the network thread."""		method reconnects the p2p and restarts the network thread."""
self.nodes[0].disconnect_p2ps()		self.nodes[0].disconnect_p2ps()
self.bootstrap_p2p(timeout=timeout)		self.bootstrap_p2p(timeout=timeout)

def send_blocks(self, blocks, success=True, reject_reason=None,		def send_blocks(
force_send=False, reconnect=False, timeout=60):		self,
		blocks,
		success=True,
		reject_reason=None,
		force_send=False,
		reconnect=False,
		timeout=60,
		):
"""Sends blocks to test node. Syncs and verifies that tip has advanced to most recent block.		"""Sends blocks to test node. Syncs and verifies that tip has advanced to most recent block.

Call with success = False if the tip shouldn't advance to the most recent block."""		Call with success = False if the tip shouldn't advance to the most recent block.
self.helper_peer.send_blocks_and_test(blocks, self.nodes[0], success=success,		"""
reject_reason=reject_reason, force_send=force_send, timeout=timeout, expect_disconnect=reconnect)		self.helper_peer.send_blocks_and_test(
		blocks,
		self.nodes[0],
		success=success,
		reject_reason=reject_reason,
		force_send=force_send,
		timeout=timeout,
		expect_disconnect=reconnect,
		)

if reconnect:		if reconnect:
self.reconnect_p2p(timeout=timeout)		self.reconnect_p2p(timeout=timeout)


if __name__ == '__main__':		if __name__ == "__main__":
FullBlockTest().main()		FullBlockTest().main()