def run_test(self):
with self.run_node_with_connections(
"Scenario 1",
0, [
'-banscore=100000', '-genesisactivationheight=110',
'-maxstdtxvalidationduration=100'
],
number_of_connections=1) as (conn, ):
coinbase1 = make_new_block(conn)
for _ in range(110):
make_new_block(conn)
tx_parent = create_transaction(coinbase1, 0, CScript(),
coinbase1.vout[0].nValue - 1000,
CScript([OP_TRUE]))
tx_parent.rehash()
tx_orphan = make_big_orphan(
tx_parent, DEFAULT_MAX_TX_SIZE_POLICY_AFTER_GENESIS)
assert_equal(len(tx_orphan.serialize()),
DEFAULT_MAX_TX_SIZE_POLICY_AFTER_GENESIS)
conn.send_message(msg_tx(tx_orphan))
# Making sure parent is not sent right away for bitcond to detect an orphan
time.sleep(1)
conn.send_message(msg_tx(tx_parent))
check_mempool_equals(conn.rpc, [tx_parent, tx_orphan])
def create_fund_txn(self,
conn,
noutput,
tx_fee,
locking_script,
pubkey=None):
# create a new block with coinbase
last_block_info = conn.rpc.getblock(conn.rpc.getbestblockhash())
coinbase = create_coinbase(height=last_block_info["height"] + 1,
pubkey=pubkey)
new_block = create_block(int(last_block_info["hash"], 16),
coinbase=coinbase,
nTime=last_block_info["time"] + 1)
new_block.nVersion = last_block_info["version"]
new_block.solve()
conn.send_message(msg_block(new_block))
wait_until(lambda: conn.rpc.getbestblockhash() == new_block.hash,
check_interval=0.3)
# mature the coinbase
conn.rpc.generate(100)
# create and send a funding txn
funding_tx = self.create_tx([(coinbase, 0)], 2, 1.5, locking_script)
conn.send_message(msg_tx(funding_tx))
check_mempool_equals(conn.rpc, [funding_tx])
conn.rpc.generate(1)
# create a new txn which pays the specified tx_fee
new_tx = self.create_tx([(funding_tx, 0)], noutput, tx_fee,
locking_script)
last_block_info = conn.rpc.getblock(conn.rpc.getbestblockhash())
new_block = create_block(
int(last_block_info["hash"], 16),
coinbase=create_coinbase(height=last_block_info["height"] + 1),
nTime=last_block_info["time"] + 1)
new_block.nVersion = last_block_info["version"]
new_block.vtx.append(new_tx)
new_block.hashMerkleRoot = new_block.calc_merkle_root()
new_block.calc_sha256()
new_block.solve()
conn.send_message(msg_block(new_block))
wait_until(lambda: conn.rpc.getbestblockhash() == new_block.hash,
check_interval=0.3)
return new_tx
def _prepare_node(self):
with self.run_node_with_connections(
"Prepare utxos", 0, [], number_of_connections=1) as (conn, ):
# create block with coinbase
coinbase = create_coinbase(height=1)
first_block = create_block(int(conn.rpc.getbestblockhash(), 16),
coinbase=coinbase)
first_block.solve()
conn.send_message(msg_block(first_block))
wait_until(lambda: conn.rpc.getbestblockhash() == first_block.hash,
check_interval=0.3)
# mature the coinbase
conn.rpc.generate(150)
funding_tx = self.create_tx([(coinbase, 0)], 4, 1.5)
conn.send_message(msg_tx(funding_tx))
check_mempool_equals(conn.rpc, [funding_tx])
conn.rpc.generate(1)
return funding_tx
def run_invalid_orphans_scenarios(self):
with self.run_node_with_connections("Scenario 1: Valid orphans",
0, [],
number_of_connections=1,
ip=get_lan_ip()) as (conn, ):
parent_tx1, parent_tx2, orphans, rejected_txs = self.prepare_parents_and_children(
conn, parent_invalidity=None, children_invalidity=None)
#sending orphans
for tx in orphans:
conn.send_message(msg_tx(tx))
assert conn.rpc.getmempoolinfo(
)["size"] == 0, "No transactions should be in the mempool!"
assert len(
rejected_txs) == 0, "No transactions should be rejected!"
# sending parents
conn.send_message(msg_tx(parent_tx1))
conn.send_message(msg_tx(parent_tx2))
# all transactions should be accepted to mempool
check_mempool_equals(conn.rpc, orphans + [parent_tx1, parent_tx2])
assert len(
rejected_txs) == 0, "No transactions should be rejected!"
with self.run_node_with_connections("Scenario 2: low fee orphans",
0, [],
number_of_connections=1,
ip=get_lan_ip()) as (conn, ):
parent_tx1, parent_tx2, orphans, rejected_txs = self.prepare_parents_and_children(
conn, parent_invalidity=None, children_invalidity="low_fee")
# sending orphans
for tx in orphans:
conn.send_message(msg_tx(tx))
sleep(1)
assert conn.rpc.getmempoolinfo(
)["size"] == 0, "No transactions should be in the mempool!"
assert len(
rejected_txs) == 0, "No transactions should be rejected yet!"
# sending first parent
conn.send_message(msg_tx(parent_tx1))
check_mempool_equals(conn.rpc, [parent_tx1])
assert len(
rejected_txs) == 0, "No transactions should be rejected yet!"
# sending second parent
conn.send_message(msg_tx(parent_tx2))
check_mempool_equals(conn.rpc, [parent_tx1, parent_tx2])
# check that all orphans are rejected, but we are not banned
self.check_rejected(rejected_txs, orphans)
assert conn.connected, "We should still be connected (not banned)."
with self.run_node_with_connections(
"Scenario 3: invalid signature orphans",
0, [],
number_of_connections=1,
ip=get_lan_ip()) as (conn, ):
parent_tx1, parent_tx2, orphans, rejected_txs = self.prepare_parents_and_children(
conn,
parent_invalidity=None,
children_invalidity="bad_signature")
# sending orphans
for tx in orphans:
conn.send_message(msg_tx(tx))
sleep(1)
assert conn.rpc.getmempoolinfo(
)["size"] == 0, "No transactions should be in the mempool!"
assert len(
rejected_txs) == 0, "No transactions should be rejected yet!"
conn.send_message(msg_tx(parent_tx1))
check_mempool_equals(
conn.rpc,
[parent_tx1]) # Only parent_tx1 should be in the mempool
assert len(
rejected_txs) == 0, "No transactions should be rejected yet!"
conn.send_message(msg_tx(parent_tx2))
check_mempool_equals(
conn.rpc,
[parent_tx1, parent_tx2
]) # Only parent_tx1 and parent_tx2 should be in the mempool
# we must be banned
conn.cb.wait_for_disconnect(timeout=20) # will be disconnected
assert len(conn.rpc.listbanned()) == 1 # and banned
conn.rpc.clearbanned()
# the banscore is set to 101 because rejection of the tx with invalid signature brings 100 points,
# we don't want to be banned as result of only one tx
with self.run_node_with_connections("Scenario 4: bad signature parent",
0, ['-banscore=101'],
number_of_connections=1,
ip=get_lan_ip()) as (conn, ):
valid_parent_tx, invalid_parent_tx, orphans, rejected_txs = self.prepare_parents_and_children(
conn,
parent_invalidity="bad_signature",
children_invalidity=None)
for tx in orphans:
conn.send_message(msg_tx(tx))
sleep(1)
assert conn.rpc.getmempoolinfo(
)["size"] == 0, "No transactions should be in the mempool!"
assert len(
rejected_txs) == 0, "No transactions should be rejected yet!"
conn.send_message(msg_tx(valid_parent_tx))
check_mempool_equals(
conn.rpc, [valid_parent_tx
]) # Only valid_parent_tx should be in the mempool
assert len(
rejected_txs) == 0, "No transactions should be rejected yet!"
conn.send_message(msg_tx(invalid_parent_tx))
check_mempool_equals(
conn.rpc,
[valid_parent_tx
]) # Still only valid_parent_tx should be in the mempool
self.check_rejected(
rejected_txs,
[invalid_parent_tx]) # And only invalid parent is rejected
sleep(1)
assert len(conn.rpc.listbanned()) == 0 # not banned
def run_test(self):
limitancestorcount = 20
limitcpfpgroupmemberscount = 10
with self.run_node_with_connections(
"Tests for ancestors count limit, for primary and secondary mempool",
0,
[
"-blockmintxfee=0.00001",
f"-limitancestorcount={limitancestorcount}",
f"-limitcpfpgroupmemberscount={limitcpfpgroupmemberscount}",
"-checkmempool=1",
],
number_of_connections=1) as (conn, ):
mining_fee = 1.01 # in satoshi per byte
relayfee = float(conn.rpc.getnetworkinfo()["relayfee"] * COIN /
1000) + 0.01 # in satoshi per byte
# create block with coinbase
coinbase = create_coinbase(height=1)
first_block = create_block(int(conn.rpc.getbestblockhash(), 16),
coinbase=coinbase)
first_block.solve()
conn.send_message(msg_block(first_block))
wait_until(lambda: conn.rpc.getbestblockhash() == first_block.hash,
check_interval=0.3)
#mature the coinbase
conn.rpc.generate(150)
funding_tx = self.create_tx([(coinbase, 0)], 2, 1.5)
conn.send_message(msg_tx(funding_tx))
check_mempool_equals(conn.rpc, [funding_tx])
conn.rpc.generate(1)
rejected_txs = []
def on_reject(conn, msg):
rejected_txs.append(msg)
conn.cb.on_reject = on_reject
# create oversized primary mempool chain, the last tx in the chain will be over the limit
last_outpoint = (funding_tx, 0)
primary_mempool_chain = []
for _ in range(limitancestorcount + 1):
tx = self.create_tx([last_outpoint], 1, mining_fee)
primary_mempool_chain.append(tx)
last_outpoint = (tx, 0)
# create oversized secondary mempool chain, the last tx in the chain will be over the limit
last_outpoint = (funding_tx, 1)
secondary_mempool_chain = []
for _ in range(limitcpfpgroupmemberscount + 1):
tx = self.create_tx([last_outpoint], 1, relayfee)
secondary_mempool_chain.append(tx)
last_outpoint = (tx, 0)
# send transactions to the node
for tx in primary_mempool_chain[:-1]:
conn.send_message(msg_tx(tx))
for tx in secondary_mempool_chain[:-1]:
conn.send_message(msg_tx(tx))
# all transactions that are sent should en up in the mempool, chains are at the limit
check_mempool_equals(
conn.rpc,
primary_mempool_chain[:-1] + secondary_mempool_chain[:-1])
# now send transactions that try to extend chain over the limit, should be rejected
for tx_to_reject in [
primary_mempool_chain[-1], secondary_mempool_chain[-1]
]:
conn.send_message(msg_tx(tx_to_reject))
wait_until(lambda: len(rejected_txs) == 1)
assert_equal(rejected_txs[0].data, tx_to_reject.sha256)
assert_equal(rejected_txs[0].reason, b'too-long-mempool-chain')
rejected_txs.clear()
# lets mine transactions from beggining of the chain, this will shorten the chains
last_block_info = conn.rpc.getblock(conn.rpc.getbestblockhash())
block = create_block(
int(last_block_info["hash"], 16),
coinbase=create_coinbase(height=last_block_info["height"] + 1),
nTime=last_block_info["time"] + 1)
block.vtx.append(primary_mempool_chain[0])
block.vtx.append(secondary_mempool_chain[0])
block.hashMerkleRoot = block.calc_merkle_root()
block.calc_sha256()
block.solve()
conn.send_message(msg_block(block))
wait_until(lambda: conn.rpc.getbestblockhash() == block.hash,
check_interval=0.3)
# try to send transactions again, now chains are shorter and transactions will be accepted
for tx_to_reject in [
primary_mempool_chain[-1], secondary_mempool_chain[-1]
]:
conn.send_message(msg_tx(tx_to_reject))
check_mempool_equals(
conn.rpc,
primary_mempool_chain[1:] + secondary_mempool_chain[1:])
# invalidate the block, this will force mined transactions back to mempool
# as we do not check chain lenght after reorg we will end up wit long chains in the mempool
conn.rpc.invalidateblock(block.hash)
check_mempool_equals(
conn.rpc, primary_mempool_chain + secondary_mempool_chain)
def run_test(self):
with self.run_node_with_connections(
"Preparation", 0, [], number_of_connections=1) as (conn, ):
self.start_node(1)
self.start_node(2)
connect_nodes_bi(self.nodes, 0, 1)
connect_nodes_bi(self.nodes, 0, 2)
# create block with coinbase
coinbase = create_coinbase(height=1)
first_block = create_block(int(conn.rpc.getbestblockhash(), 16),
coinbase=coinbase)
first_block.solve()
conn.send_message(msg_block(first_block))
wait_until(lambda: conn.rpc.getbestblockhash() == first_block.hash,
check_interval=0.3)
#mature the coinbase
conn.rpc.generate(101)
N_TX_IN_BLOCK = 30
funding_tx = self.create_tx([(coinbase, 0)], 3, 1000, 0)
funding_tx_1 = self.create_tx([(funding_tx, 0)], N_TX_IN_BLOCK,
1000, 0)
funding_tx_2 = self.create_tx([(funding_tx, 1)], N_TX_IN_BLOCK,
1000, 0)
funding_tx_3 = self.create_tx([(funding_tx, 2)], N_TX_IN_BLOCK,
1000, 0)
conn.send_message(msg_tx(funding_tx))
conn.send_message(msg_tx(funding_tx_1))
conn.send_message(msg_tx(funding_tx_2))
conn.send_message(msg_tx(funding_tx_3))
check_mempool_equals(
conn.rpc,
[funding_tx, funding_tx_1, funding_tx_2, funding_tx_3])
conn.rpc.generate(1)
check_mempool_equals(conn.rpc, [])
last_block_info = conn.rpc.getblock(conn.rpc.getbestblockhash())
wait_until(lambda: self.nodes[1].getbestblockhash() ==
last_block_info["hash"])
wait_until(lambda: self.nodes[2].getbestblockhash() ==
last_block_info["hash"])
self.stop_node(1)
self.stop_node(2)
block = self.create_block(funding_tx=funding_tx_1,
block_target_size=10 * ONE_MEGABYTE,
prev_hash=int(last_block_info["hash"], 16),
prev_height=last_block_info["height"],
prev_time=last_block_info["time"])
block_bytes = block.serialize()
block_size = len(block_bytes)
block_bytes = None
TARGET_SENDING_TIME_FAST = 50
TOTAL_BLOCK_DOWNLOAD_TIMEOUT = 60
TARGET_SENDING_TIME_SLOW = 70
target_send_rate_fast = block_size / TARGET_SENDING_TIME_FAST
cmd_total_timeout = 100 * TOTAL_BLOCK_DOWNLOAD_TIMEOUT // (
10 * 60) # 100% * (timeout) / 10min ,
target_send_rate_slow = block_size / TARGET_SENDING_TIME_SLOW
""" CASE 1 """
self.test_send_block_to_node(
label=
"Single connection, sending slowly, setting only base timeout, timeout occures",
node_index=0,
block=block,
send_rate=target_send_rate_slow,
expected_time_to_send=TARGET_SENDING_TIME_SLOW,
cmd_timeout_base=cmd_total_timeout,
cmd_timeout_base_ibd=
1000000, # we are not in IBD so this param is not relevant
cmd_timeout_per_peer=
1000000, # we are sending on only one connection so this param is not relevant
expect_timeout=True,
)
self.test_send_block_to_node(
label=
"Single connection, sending fast enough, setting only base timeout, timeout does not occure",
node_index=0,
block=block,
send_rate=target_send_rate_fast,
expected_time_to_send=TARGET_SENDING_TIME_FAST,
cmd_timeout_base=cmd_total_timeout,
cmd_timeout_base_ibd=
1, # we are not in IBD so this param is not relevant
cmd_timeout_per_peer=
1, # we are sending on only one connection so this param is not relevant
expect_timeout=False,
)
""" CASE 2 """
self.test_send_block_to_node(
label=
"Single connection, node in the initial block download, setting only base IBD timeout, sending slowly, timeout occures",
node_index=1,
block=block,
send_rate=target_send_rate_slow,
expected_time_to_send=TARGET_SENDING_TIME_SLOW,
cmd_timeout_base=
100000, # we are in IBD so this param is not relevant
cmd_timeout_base_ibd=cmd_total_timeout, # we are in IBD
cmd_timeout_per_peer=
100000, # we are sending on only one connection so this param is not relevant
mocktime=int(
time() + 48 * 60 *
60), # make node go 48 hours into future to put it in the IBD
expect_timeout=True,
)
self.test_send_block_to_node(
label=
"Single connection, node in the initial block download, setting only base IBD timeout, sending fast enough, timeout does not occure",
node_index=1,
block=block,
send_rate=target_send_rate_fast,
expected_time_to_send=TARGET_SENDING_TIME_FAST,
cmd_timeout_base=1, # we are in IBD so this param is not relevant
cmd_timeout_base_ibd=cmd_total_timeout, # we are in IBD
cmd_timeout_per_peer=
1, # we are sending on only one connection so this param is not relevant
mocktime=int(
time() + 48 * 60 *
60), # make node go 48 hours into future to put it in the IBD
expect_timeout=False,
)
""" CASE 3 """
block_2 = self.create_block(funding_tx=funding_tx_2,
block_target_size=10 * ONE_MEGABYTE,
prev_hash=int(last_block_info["hash"], 16),
prev_height=last_block_info["height"],
prev_time=last_block_info["time"])
block_3 = self.create_block(funding_tx=funding_tx_3,
block_target_size=10 * ONE_MEGABYTE,
prev_hash=int(block_2.hash, 16),
prev_height=last_block_info["height"] + 1,
prev_time=last_block_info["time"] + 1)
self.test_send_block_to_node(
label=
"Two connections, on both connections we are sending blocks, sending slowly, timeout occures",
node_index=2,
block=block,
send_rate=target_send_rate_slow,
expected_time_to_send=TARGET_SENDING_TIME_SLOW,
cmd_timeout_base=cmd_total_timeout //
2, # half of the timeout is contributed by the base
cmd_timeout_base_ibd=
100000, # we are not in IBD so this param is not relevant
cmd_timeout_per_peer=cmd_total_timeout //
2, # another half of the timeout is contributed by the additional (single) per peer
additional_conn_blocks=[
block_2, block_3
], # blocks to send on through additional connection
additional_conn_send_rate=target_send_rate_slow,
expect_timeout=True,
)
self.test_send_block_to_node(
label=
"Two connections, on both connections we are sending blocks, sending slowly, sending fast enough, timeout does not occure",
node_index=2,
block=block,
send_rate=target_send_rate_fast,
expected_time_to_send=TARGET_SENDING_TIME_FAST,
cmd_timeout_base=cmd_total_timeout //
2, # half of the timeout is contributed by the base
cmd_timeout_base_ibd=
1, # we are not in IBD so this param is not relevant
cmd_timeout_per_peer=cmd_total_timeout //
2, # another half of the timeout is contributed by the additional (single) per peer
additional_conn_blocks=[
block_2, block_3
], # blocks to send on through additional connection
additional_conn_send_rate=target_send_rate_slow,
expect_timeout=False,
)
def run_test(self):
with self.run_node_with_connections(
"Scenario 1: Low fee, non-whitelisted peer",
0, ["-blockmintxfee=0.00001"],
number_of_connections=1) as (conn, ):
mining_fee = 1.01 # in satoshi per byte
relayfee = float(conn.rpc.getnetworkinfo()["relayfee"] * COIN /
1000) + 0.01 # in satoshi per byte
# create block with coinbase
coinbase = create_coinbase(height=1)
first_block = create_block(int(conn.rpc.getbestblockhash(), 16),
coinbase=coinbase)
first_block.solve()
conn.send_message(msg_block(first_block))
wait_until(lambda: conn.rpc.getbestblockhash() == first_block.hash,
check_interval=0.3)
#mature the coinbase
conn.rpc.generate(150)
funding_tx = self.create_tx([(coinbase, 0)], 10, 1.5)
conn.send_message(msg_tx(funding_tx))
check_mempool_equals(conn.rpc, [funding_tx])
conn.rpc.generate(1)
last_block_info = conn.rpc.getblock(conn.rpc.getbestblockhash())
block = create_block(
int(last_block_info["hash"], 16),
coinbase=create_coinbase(height=last_block_info["height"] + 1),
nTime=last_block_info["time"] + 1)
low_fee_tx = self.create_tx([(funding_tx, 0)], 2, relayfee)
block.vtx.append(low_fee_tx)
block.hashMerkleRoot = block.calc_merkle_root()
block.calc_sha256()
block.solve()
conn.send_message(msg_block(block))
wait_until(lambda: conn.rpc.getbestblockhash() == block.hash,
check_interval=0.3)
tx_pays_relay1 = self.create_tx([(low_fee_tx, 0)], 2, relayfee)
tx_pays_relay2 = self.create_tx([(tx_pays_relay1, 0)], 1, relayfee)
tx_pays_enough_for_itself = self.create_tx([(tx_pays_relay1, 1)],
1, mining_fee)
tx_pays_for_ancestors = self.create_tx([(tx_pays_relay2, 0)], 1,
3.5 * mining_fee)
tx_pays_relay3 = self.create_tx([(tx_pays_for_ancestors, 0)], 1,
relayfee)
conn.send_message(msg_tx(tx_pays_relay1))
check_mempool_equals(conn.rpc, [tx_pays_relay1])
wait_until(lambda: conn.rpc.getminingcandidate()["num_tx"] == 1
) #"should be coinbase only"
conn.send_message(msg_tx(tx_pays_relay2))
check_mempool_equals(conn.rpc, [tx_pays_relay1, tx_pays_relay2])
wait_until(lambda: conn.rpc.getminingcandidate()["num_tx"] == 1
) #"should be coinbase only"
conn.send_message(msg_tx(tx_pays_enough_for_itself))
check_mempool_equals(
conn.rpc,
[tx_pays_relay1, tx_pays_relay2, tx_pays_enough_for_itself])
wait_until(lambda: conn.rpc.getminingcandidate()["num_tx"] == 1
) #"should be coinbase only"
#try to rebuild journal, mining candidate should stay the same
conn.rpc.rebuildjournal()
wait_until(lambda: conn.rpc.getminingcandidate()["num_tx"] == 1)
# this will trigger cpfp for two unpaying antcestors (tx_pays_relay1 and tx_pays_relay1) then
# after that tx_pays_enough_for_itself will be free of ancestor debt and it will be accepted also
conn.send_message(msg_tx(tx_pays_for_ancestors))
check_mempool_equals(conn.rpc, [
tx_pays_relay1, tx_pays_relay2, tx_pays_enough_for_itself,
tx_pays_for_ancestors
])
wait_until(lambda: conn.rpc.getminingcandidate()["num_tx"] == 5
), #"all tx plus coinbase"
# still, non paying child of the tx_pays_for_ancestors will not be accepted
conn.send_message(msg_tx(tx_pays_relay3))
check_mempool_equals(conn.rpc, [
tx_pays_relay1, tx_pays_relay2, tx_pays_enough_for_itself,
tx_pays_for_ancestors, tx_pays_relay3
])
wait_until(lambda: conn.rpc.getminingcandidate()["num_tx"] == 5
), #"all tx, except tx_pays_relay3 plus coinbase"
#try to rebuild journal, mining candidate should stay the same
conn.rpc.rebuildjournal()
wait_until(lambda: conn.rpc.getminingcandidate()["num_tx"] == 5)
# we will mine a new block, all transactions from the journal will end up in new block, mempool will contain
# only tx_pays_relay3
conn.rpc.generate(1)
check_mempool_equals(conn.rpc, [tx_pays_relay3])
# now we invalidate block two blocks, at this point tx_pays_for_ancestors does not pay enough for
# all non-paying children, nothing will end up in the journal.
# non paying children are: low_fee_tx, tx_pays_relay1, tx_pays_relay2
conn.rpc.invalidateblock(block.hash)
check_mempool_equals(conn.rpc, [
low_fee_tx, tx_pays_relay1, tx_pays_relay2,
tx_pays_enough_for_itself, tx_pays_for_ancestors,
tx_pays_relay3
])
wait_until(lambda: conn.rpc.getminingcandidate()["num_tx"] == 1
) #"should be coinbase only"
# when we reconsider invalidate block, everything should be the same
conn.rpc.reconsiderblock(block.hash)
check_mempool_equals(conn.rpc, [tx_pays_relay3])
wait_until(lambda: conn.rpc.getminingcandidate()["num_tx"] == 1
) #"should be coinbase only"
def run_test(self):
with self.run_node_with_connections(
"Preparation",
0, [
"-blockmintxfee=0.00001",
"-relayfee=0.000005",
"-checkmempool=0",
],
number_of_connections=1) as (conn, ):
mining_fee = 1.1
# create block with coinbase
coinbase = create_coinbase(pubkey=self.public_key, height=1)
first_block = create_block(int(conn.rpc.getbestblockhash(), 16),
coinbase=coinbase)
first_block.solve()
conn.send_message(msg_block(first_block))
wait_until(lambda: conn.rpc.getbestblockhash() == first_block.hash,
check_interval=0.3)
# mature the coinbase
conn.rpc.generate(150)
funding_tx = self.create_tx([(coinbase, 0)], 2006, mining_fee)
conn.send_message(msg_tx(funding_tx))
check_mempool_equals(conn.rpc, [funding_tx])
# generates a root block with our funding transaction
conn.rpc.generate(1)
# create 2000 standard p2pk transactions
a1_txs = []
for m in range(2000):
a1_txs.append(self.create_tx([(funding_tx, m)], 1, mining_fee))
a1_spends = []
for a1_tx in a1_txs:
a1_spends.append(self.create_tx([(a1_tx, 0)], 1, mining_fee))
# create 2000 standard p2pk transactions which are spending the same outputs as a1_txs
double_spend_txs = []
for m in range(2000):
double_spend_txs.append(
self.create_tx([(funding_tx, m)], 1, mining_fee))
TX_COUNT = 8
# create for pairs of long-evaluating transactions for blocks b1, b2, c1, and c2
long_eval_txs = []
for m in range(2000, 2006):
long_eval_txs.append(
self.create_tx([(funding_tx, m)],
1,
0.0001,
make_long_eval_script=True))
for _ in range(TX_COUNT - 1):
long_eval_txs.append(
self.create_tx([(long_eval_txs[-1], 0)],
1,
0.0001,
make_long_eval_script=True))
root_block_info = conn.rpc.getblock(conn.rpc.getbestblockhash())
root_hash = root_block_info["hash"]
root_height = root_block_info["height"]
root_time = root_block_info["time"]
# create all blocks needed for this test
block_a1 = self.make_block(a1_txs, root_hash, root_height,
root_time)
block_b1 = self.make_block(
long_eval_txs[0 * TX_COUNT:1 * TX_COUNT], root_hash,
root_height, root_time)
block_b2 = self.make_block(
long_eval_txs[1 * TX_COUNT:2 * TX_COUNT], block_b1.hash,
root_height + 1, root_time + 100)
block_c1 = self.make_block(
long_eval_txs[2 * TX_COUNT:3 * TX_COUNT], root_hash,
root_height, root_time)
block_c2 = self.make_block(
long_eval_txs[3 * TX_COUNT:4 * TX_COUNT], block_c1.hash,
root_height + 1, root_time + 101)
block_d1 = self.make_block(
long_eval_txs[4 * TX_COUNT:5 * TX_COUNT], root_hash,
root_height, root_time)
block_d2 = self.make_block(
long_eval_txs[5 * TX_COUNT:6 * TX_COUNT], block_d1.hash,
root_height + 1, root_time + 102)
conn.send_message(msg_block(block_a1))
wait_until(lambda: conn.rpc.getbestblockhash() == block_a1.hash,
check_interval=0.3)
with self.run_node_with_connections(
"1. Try sending the same transaction that are in the disconnected block during the reorg",
0, [
"-blockmintxfee=0.00001",
"-relayfee=0.000005",
"-maxtxsizepolicy=0",
"-maxstdtxnsperthreadratio=1",
"-maxnonstdtxnsperthreadratio=1",
'-maxnonstdtxvalidationduration=100000',
'-maxtxnvalidatorasynctasksrunduration=100001',
'-genesisactivationheight=1',
'-maxstackmemoryusageconsensus=2GB',
"-maxscriptsizepolicy=2GB",
"-acceptnonstdoutputs=1",
],
number_of_connections=1) as (conn, ):
# send all transactions form block a1 at once and flood the PTV
for tx in a1_txs:
conn.send_message(msg_tx(tx))
# announce blocks b1, and b2 and send them triggering the reorg
headers = msg_headers()
headers.headers.append(block_b1)
headers.headers.append(block_b2)
conn.send_message(headers)
conn.send_message(msg_block(block_b1))
conn.send_message(msg_block(block_b2))
# here we are having the PTV and PBV working at the same time, filling the mempool while
# the a1 is disconnected
# check if everything is as expected
wait_until(lambda: conn.rpc.getbestblockhash() == block_b2.hash,
timeout=60,
check_interval=1)
check_mempool_equals(conn.rpc, a1_txs)
# now prepare for next scenario
conn.rpc.invalidateblock(block_b1.hash)
wait_until(lambda: conn.rpc.getbestblockhash() == block_a1.hash,
check_interval=1)
# transactions from the disconnected blocks b1 and b2 will not be added to mempool because of
# the insufficient priority (zero fee)
check_mempool_equals(conn.rpc, [], timeout=60, check_interval=1)
with self.run_node_with_connections(
"2. Try sending transaction that are spending same inputs as transactions in the disconnected block during the reorg",
0, [
"-blockmintxfee=0.00001",
"-relayfee=0.000005",
"-maxtxsizepolicy=0",
"-maxstdtxnsperthreadratio=1",
"-maxnonstdtxnsperthreadratio=1",
'-maxnonstdtxvalidationduration=100000',
'-maxtxnvalidatorasynctasksrunduration=100001',
'-genesisactivationheight=1',
'-maxstackmemoryusageconsensus=2GB',
"-maxscriptsizepolicy=2GB",
"-acceptnonstdoutputs=1",
],
number_of_connections=1) as (conn, ):
# see if everything is still as expected
wait_until(lambda: conn.rpc.getbestblockhash() == block_a1.hash,
check_interval=1)
check_mempool_equals(conn.rpc, [], timeout=60, check_interval=1)
# send all transactions that are the double-spends of txs form block a1
for double_spend_tx in double_spend_txs:
conn.send_message(msg_tx(double_spend_tx))
# announce and send c1, and c2
headers = msg_headers()
headers.headers.append(block_c1)
headers.headers.append(block_c2)
conn.send_message(headers)
conn.send_message(msg_block(block_c1))
conn.send_message(msg_block(block_c2))
# here we are having the PTV and PBV working at the same time, filling the mempool with double-spends
# while the a1 is disconnected
# see if everything is as expected
wait_until(lambda: conn.rpc.getbestblockhash() == block_c2.hash,
timeout=60,
check_interval=1)
# in the mempool we want all transactions for blocks a1
# while no double_spend_txs should be present
check_mempool_equals(conn.rpc,
a1_txs,
timeout=60,
check_interval=1)
# now prepare for next scenario
conn.rpc.invalidateblock(block_c1.hash)
wait_until(lambda: conn.rpc.getbestblockhash() == block_a1.hash,
check_interval=1)
# transactions from the disconnected blocks c1 and c2 will not be added to mempool because of
# the insufficient priority (zero fee)
check_mempool_equals(conn.rpc, [], timeout=60, check_interval=1)
with self.run_node_with_connections(
"3. Submit transactions that are spending ouputs from disconnecting block and try to mine a block during the reorg",
0, [
"-blockmintxfee=0.00001",
"-relayfee=0.000005",
"-maxtxsizepolicy=0",
'-maxnonstdtxvalidationduration=100000',
'-maxtxnvalidatorasynctasksrunduration=100001',
'-genesisactivationheight=1',
'-maxstackmemoryusageconsensus=2GB',
"-maxscriptsizepolicy=2GB",
"-acceptnonstdoutputs=1",
],
number_of_connections=1) as (conn, ):
# see if everything is still as expected
wait_until(lambda: conn.rpc.getbestblockhash() == block_a1.hash,
check_interval=1)
check_mempool_equals(conn.rpc, [], timeout=60, check_interval=1)
for tx in a1_spends:
conn.send_message(msg_tx(tx))
# send transactions that are spending outputs from the soon-to-be-disconnected block (a1)
check_mempool_equals(conn.rpc, a1_spends, timeout=100)
# announce blocks d1, and d2 and send them triggering the reorg
headers = msg_headers()
headers.headers.append(block_d1)
headers.headers.append(block_d2)
conn.send_message(headers)
conn.send_message(msg_block(block_d1))
conn.send_message(msg_block(block_d2))
# lets give a chance for reorg to start
sleep(0.5)
# we are in the middle of the reorg, let try to mine a block
# if we are in inconsistent state this call would fail
conn.rpc.generate(1)
def _test_chain(self, outpoint1, outpoint2):
limitancestorcount = 20
limitcpfpgroupmemberscount = 10
with self.run_node_with_connections(
"Tests for ancestors count limit for primary and secondary mempool. "
"Transactions arranged in chain.",
0,
[
"-blockmintxfee=0.00001",
"-relayfee=0.000005",
f"-limitancestorcount={limitancestorcount}",
f"-limitcpfpgroupmemberscount={limitcpfpgroupmemberscount}",
"-checkmempool=1",
],
number_of_connections=1) as (conn, ):
mining_fee = 1.001 # in satoshi per byte
relayfee = 0.501 # in satoshi per byte
rejected_txs = []
def on_reject(conn, msg):
rejected_txs.append(msg)
conn.cb.on_reject = on_reject
# create oversized primary mempool chain, the last tx in the chain will be over the limit
last_outpoint = outpoint1
primary_mempool_chain = []
for _ in range(limitancestorcount + 1):
tx = self.create_tx([last_outpoint], 1, mining_fee)
primary_mempool_chain.append(tx)
last_outpoint = (tx, 0)
# create oversized secondary mempool chain, the last tx in the chain will be over the limit
last_outpoint = outpoint2
secondary_mempool_chain = []
for _ in range(limitcpfpgroupmemberscount + 1):
tx = self.create_tx([last_outpoint], 1, relayfee)
secondary_mempool_chain.append(tx)
last_outpoint = (tx, 0)
# send transactions to the node
for tx in primary_mempool_chain[:-1]:
conn.send_message(msg_tx(tx))
for tx in secondary_mempool_chain[:-1]:
conn.send_message(msg_tx(tx))
# all transactions that are sent should en up in the mempool, chains are at the limit
check_mempool_equals(
conn.rpc,
primary_mempool_chain[:-1] + secondary_mempool_chain[:-1])
# now send transactions that try to extend chain over the limit, should be rejected
for tx_to_reject in [
primary_mempool_chain[-1], secondary_mempool_chain[-1]
]:
conn.send_message(msg_tx(tx_to_reject))
wait_until(lambda: len(rejected_txs) == 1)
assert_equal(rejected_txs[0].data, tx_to_reject.sha256)
assert_equal(rejected_txs[0].reason, b'too-long-mempool-chain')
rejected_txs.clear()
# lets mine transactions from beggining of the chain, this will shorten the chains
block = self.mine_transactions(
conn, [primary_mempool_chain[0], secondary_mempool_chain[0]])
# try to send transactions again, now chains are shorter and transactions will be accepted
for tx_to_reject in [
primary_mempool_chain[-1], secondary_mempool_chain[-1]
]:
conn.send_message(msg_tx(tx_to_reject))
check_mempool_equals(
conn.rpc,
primary_mempool_chain[1:] + secondary_mempool_chain[1:])
# invalidate the block, this will force mined transactions back to mempool
# as we do not check chain length after reorg we will end up with long chains in the mempool
conn.rpc.invalidateblock(block.hash)
check_mempool_equals(
conn.rpc, primary_mempool_chain + secondary_mempool_chain)
# mine all txs from mempool to ensure empty mempool for the next test case
self.mine_transactions(
conn, primary_mempool_chain + secondary_mempool_chain)
def _test_graph(self, outpoint, mempool_type):
if mempool_type == "primary":
limitancestorcount = 3
limitcpfpgroupmemberscount = 1000
elif mempool_type == "secondary":
limitancestorcount = 1000
limitcpfpgroupmemberscount = 7
else:
raise Exception("Unsupported mempool type")
with self.run_node_with_connections(
f"Tests for ancestors count limit in {mempool_type} mempool."
"Transactions arranged in graph.",
0,
[
"-blockmintxfee=0.00001",
"-relayfee=0.000005",
f"-limitancestorcount={limitancestorcount}",
f"-limitcpfpgroupmemberscount={limitcpfpgroupmemberscount}",
"-checkmempool=1",
],
number_of_connections=1) as (conn, ):
# ensure that the mempool is empty
check_mempool_equals(conn.rpc, [])
rejected_txs = []
def on_reject(conn, msg):
rejected_txs.append(msg)
conn.cb.on_reject = on_reject
mining_fee = 1.001 # in satoshi per byte
relayfee = 0.501 # in satoshi per byte
# create trasactions
# <transaction_name> (<prim_count>, <sec_count>)
#
# prim_count is ancestors count in primary mempool, algorithm == max
# sec_count is ancestors count in secondary mempool, algorithm == sum
#
#
# tx1 (0, 0)
# +------------+ | +------------+
# | | |
# tx2 (1, 1) tx3 (1, 1) tx4 (1, 1)
# | | |
# +------------+ | +------------+
# tx5 (2, 6)
# |
# |
# tx6 (3, 7)
fee = mining_fee if mempool_type == "primary" else relayfee
tx1 = self.create_tx([outpoint], 3, fee)
tx2 = self.create_tx([(tx1, 0)], 1, fee)
tx3 = self.create_tx([(tx1, 1)], 1, fee)
tx4 = self.create_tx([(tx1, 2)], 1, fee)
tx5 = self.create_tx([(tx2, 0), (tx3, 0), (tx4, 0)], 1, fee)
tx6 = self.create_tx([(tx5, 0)], 1, fee)
conn.send_message(msg_tx(tx1))
conn.send_message(msg_tx(tx2))
conn.send_message(msg_tx(tx3))
conn.send_message(msg_tx(tx4))
conn.send_message(msg_tx(tx5))
# up to now all txs are accepted
check_mempool_equals(conn.rpc, [tx1, tx2, tx3, tx4, tx5])
# tx6 will be rejected because it is limit of ancestors count
conn.send_message(msg_tx(tx6))
wait_until(lambda: len(rejected_txs) == 1)
assert_equal(rejected_txs[0].data, tx6.sha256)
assert_equal(rejected_txs[0].reason, b'too-long-mempool-chain')
# now mine tx1 to shorten the chain
block = self.mine_transactions(conn, [tx1])
# now we can add tx6 to mempool
conn.send_message(msg_tx(tx6))
check_mempool_equals(conn.rpc, [tx2, tx3, tx4, tx5, tx6])
# invalidate the block, this will force mined transactions back to mempool
# as we do not check chain length after reorg we will end up with long chains in the mempool
conn.rpc.invalidateblock(block.hash)
check_mempool_equals(conn.rpc, [tx1, tx2, tx3, tx4, tx5, tx6])
# mine all txs from mempool to ensure empty mempool for the next test case
self.mine_transactions(conn, [tx1, tx2, tx3, tx4, tx5, tx6])
def run_test(self):
with self.run_node_with_connections(
"Eviction order test; fill the memppol over its size and see what txs will be evicted.",
0,
[
"-blockmintxfee=0.00001", # 1 satoshi/byte
"-minrelaytxfee=0",
"-maxmempool=300MB",
"-maxmempoolsizedisk=0",
"-genesisactivationheight=1",
'-maxstdtxvalidationduration=5000',
'-maxnonstdtxvalidationduration=5001',
'-maxstackmemoryusageconsensus=5MB',
'-maxstackmemoryusagepolicy=5MB',
'-maxscriptsizepolicy=5MB',
'-checkmempool=0',
],
number_of_connections=1) as (conn, ):
mining_fee = 1.01 # in satoshi per byte
# create block with coinbase
coinbase1 = create_coinbase(height=1)
first_block = create_block(int(conn.rpc.getbestblockhash(), 16),
coinbase=coinbase1)
first_block.solve()
conn.send_message(msg_block(first_block))
wait_until(lambda: conn.rpc.getbestblockhash() == first_block.hash,
check_interval=1)
coinbase2 = create_coinbase(height=2)
second_block = create_block(int(conn.rpc.getbestblockhash(), 16),
coinbase=coinbase2)
second_block.solve()
conn.send_message(msg_block(second_block))
wait_until(
lambda: conn.rpc.getbestblockhash() == second_block.hash,
check_interval=1)
#mature the coinbase
conn.rpc.generate(100)
funding_tx = self.create_tx([(coinbase1, 0), (coinbase2, 0)], 16,
mining_fee, 0)
conn.send_message(msg_tx(funding_tx))
check_mempool_equals(conn.rpc, [funding_tx])
conn.rpc.generate(1)
# (funding_tx, 0) (funding_tx, 1) (funding_tx, 2) (funding_tx, 3) (funding_tx, 4-14) (funding_tx, 15)
# ---------------------------------------------------------------------------------------------------------------------
# group1tx1 lowPaying3 tx1 tx3 (long chain of (chain of high
# | | | | high paying txs) paying txs used to
# group1tx2 lowPaying4 tx2 lowPaying5 to fill the mempool) push low paying txs
# / \ out of mempools)
# group1paying group2tx1
# | |
# lowPaying1 group2tx2
# |
# group2paying
# |
# lowPaying2
group1tx1 = self.create_tx([(funding_tx, 0)],
noutput=1,
feerate=0,
totalSize=ONE_MEGABYTE)
group1tx2 = self.create_tx([(group1tx1, 0)],
noutput=2,
feerate=0,
totalSize=ONE_MEGABYTE)
group1paying = self.create_tx(
[(group1tx2, 0)],
noutput=1,
feerate=1.4,
totalSize=ONE_MEGABYTE,
size_of_nonpayin_txs=self.tx_size(group1tx1) +
self.tx_size(group1tx2))
group2tx1 = self.create_tx([(group1tx2, 1)],
noutput=1,
feerate=0,
totalSize=ONE_MEGABYTE)
group2tx2 = self.create_tx([(group2tx1, 0)],
noutput=1,
feerate=0,
totalSize=ONE_MEGABYTE)
group2paying = self.create_tx(
[(group2tx2, 0)],
noutput=1,
feerate=1.6,
totalSize=ONE_MEGABYTE,
size_of_nonpayin_txs=self.tx_size(group2tx1) +
self.tx_size(group2tx2))
tx1 = self.create_tx([(funding_tx, 2)],
noutput=1,
feerate=1.1,
totalSize=ONE_MEGABYTE)
tx2 = self.create_tx([(tx1, 0)],
noutput=1,
feerate=1.8,
totalSize=ONE_MEGABYTE)
tx3 = self.create_tx([(funding_tx, 3)],
noutput=1,
feerate=1.1,
totalSize=ONE_MEGABYTE)
lowPaying1 = self.create_tx([(group1paying, 0)],
noutput=1,
feerate=0.1,
totalSize=ONE_MEGABYTE)
lowPaying2 = self.create_tx([(group2paying, 0)],
noutput=1,
feerate=0.2,
totalSize=ONE_MEGABYTE)
lowPaying3 = self.create_tx([(funding_tx, 1)],
noutput=1,
feerate=0.3,
totalSize=ONE_MEGABYTE)
lowPaying4 = self.create_tx([(lowPaying3, 0)],
noutput=1,
feerate=0.4,
totalSize=ONE_MEGABYTE)
lowPaying5 = self.create_tx([(tx3, 0)],
noutput=1,
feerate=0.5,
totalSize=ONE_MEGABYTE)
primaryMempoolTxs = [
group1tx1, group1tx2, group1paying, group2tx1, group2tx2,
group2paying, tx1, tx2, tx3
]
secondaryMempoolTxs = [
lowPaying1, lowPaying2, lowPaying3, lowPaying4, lowPaying5
]
for tx in primaryMempoolTxs + secondaryMempoolTxs:
conn.send_message(msg_tx(tx))
check_mempool_equals(conn.rpc,
primaryMempoolTxs + secondaryMempoolTxs)
wait_until(lambda: conn.rpc.getminingcandidate()["num_tx"] == len(
primaryMempoolTxs) + 1)
txs_in_mempool = set(primaryMempoolTxs + secondaryMempoolTxs)
outpoints_to_spend = [(funding_tx, n) for n in range(4, 15)]
while len(txs_in_mempool) < 299:
tx = self.create_tx([
outpoints_to_spend.pop(0),
],
noutput=2,
feerate=5,
totalSize=ONE_MEGABYTE)
outpoints_to_spend.append((tx, 0))
outpoints_to_spend.append((tx, 1))
conn.send_message(msg_tx(tx))
txs_in_mempool.add(tx)
check_mempool_equals(conn.rpc,
txs_in_mempool,
timeout=600,
check_interval=2)
eviction_order = [
lowPaying1, lowPaying2, lowPaying4, lowPaying3, lowPaying5,
tx3, group2paying, group2tx2, group2tx1, group1paying,
group1tx2, group1tx1, tx2, tx1
]
conn.rpc.log.info(f"lowPaying1 = {lowPaying1.hash}")
conn.rpc.log.info(f"lowPaying2 = {lowPaying2.hash}")
conn.rpc.log.info(f"lowPaying3 = {lowPaying3.hash}")
conn.rpc.log.info(f"lowPaying4 = {lowPaying4.hash}")
conn.rpc.log.info(f"lowPaying5 = {lowPaying5.hash}")
conn.rpc.log.info(f"tx1 = {tx1.hash}")
conn.rpc.log.info(f"tx2 = {tx2.hash}")
conn.rpc.log.info(f"tx3 = {tx3.hash}")
conn.rpc.log.info(f"group2paying = {group2paying.hash}")
conn.rpc.log.info(f"group2tx2 = {group2tx2.hash}")
conn.rpc.log.info(f"group2tx1 = {group2tx1.hash}")
conn.rpc.log.info(f"group1paying = {group1paying.hash}")
conn.rpc.log.info(f"group1tx2 = {group1tx2.hash}")
conn.rpc.log.info(f"group1tx1 = {group1tx1.hash}")
outpoint_to_spend = (funding_tx, 15)
for evicting in eviction_order:
tx = self.create_tx([
outpoint_to_spend,
],
noutput=1,
feerate=30,
totalSize=ONE_MEGABYTE)
outpoint_to_spend = (tx, 0)
conn.send_message(msg_tx(tx))
txs_in_mempool.add(tx)
txs_in_mempool.remove(evicting)
check_mempool_equals(conn.rpc,
txs_in_mempool,
check_interval=0.5,
timeout=60)
# when there are still some secondary mempool transaction in the mempool
if len(txs_in_mempool & set(secondaryMempoolTxs)) != 0:
# the mempoolminfee should not exceed blockmintxfee
assert conn.rpc.getmempoolinfo(
)['mempoolminfee'] <= conn.rpc.getsettings(
)['blockmintxfee']
with self.run_node_with_connections(
"Restart the node with using the disk for storing transactions.",
0,
[
"-blockmintxfee=0.00001", # 1 satoshi/byte
"-minrelaytxfee=0",
"-maxmempool=300MB",
"-maxmempoolsizedisk=10MB",
"-genesisactivationheight=1",
'-maxstdtxvalidationduration=5000',
'-maxnonstdtxvalidationduration=5001',
'-maxstackmemoryusageconsensus=5MB',
'-maxstackmemoryusagepolicy=5MB',
'-maxscriptsizepolicy=5MB',
'-checkmempool=0',
],
number_of_connections=1) as (conn, ):
# check that we have all txs in the mempool
check_mempool_equals(conn.rpc,
txs_in_mempool,
check_interval=1,
timeout=60)
# check that we are not using the tx database
assert conn.rpc.getmempoolinfo()['usagedisk'] == 0
#now we have room for some more txs
for _ in range(3):
tx = self.create_tx([
outpoint_to_spend,
],
noutput=1,
feerate=1,
totalSize=ONE_MEGABYTE)
outpoint_to_spend = (tx, 0)
conn.send_message(msg_tx(tx))
txs_in_mempool.add(tx)
check_mempool_equals(conn.rpc,
txs_in_mempool,
check_interval=0.5,
timeout=60)
# make sure that we are using the tx database now
assert conn.rpc.getmempoolinfo()['usagedisk'] != 0
with self.run_node_with_connections(
"Restart the node once again to see if transaction were stored in the db.",
0,
[
"-blockmintxfee=0.00001", # 1 satoshi/byte
"-minrelaytxfee=0",
"-maxmempool=300MB",
"-maxmempoolsizedisk=10MB",
"-genesisactivationheight=1",
'-maxstdtxvalidationduration=5000',
'-maxnonstdtxvalidationduration=5001',
'-maxstackmemoryusageconsensus=5MB',
'-maxstackmemoryusagepolicy=5MB',
'-maxscriptsizepolicy=5MB',
'-checkmempool=0',
],
number_of_connections=1) as (conn, ):
# check that we have all txs in the mempool
check_mempool_equals(conn.rpc,
txs_in_mempool,
check_interval=1,
timeout=60)
# make sure that we are using the tx database
assert conn.rpc.getmempoolinfo()['usagedisk'] != 0
def run_cpfp_scenario1(self,
conn,
txchains,
last_descendant_from_each_txchain,
chain_length,
num_of_chains,
mining_fee,
locking_script,
rpcsend=None,
timeout=240):
#
# Send low fee (paying relay_fee) txs to the node.
#
exp_mempool_size = conn.rpc.getmempoolinfo()['size'] + len(txchains)
elapsed1 = self.send_txs(rpcsend, conn, txchains, exp_mempool_size,
timeout)
# Check if mempool contains all low fee txs.
check_mempool_equals(conn.rpc, txchains, timeout)
#
# Check getminingcandidate result: There should be no cpfp txs in the block template, due to low fees.
#
wait_until(lambda: conn.rpc.getminingcandidate()["num_tx"] == 1
) # there should be coinbase tx only
#
# Create and send cpfp txs (paying mining_fee).
#
cpfp_txs_pay_for_ancestors = []
for tx in last_descendant_from_each_txchain:
cpfp_txs_pay_for_ancestors.append(
self.create_tx([(tx, 0)], 2, (chain_length + 1) * (mining_fee),
locking_script))
# Send cpfp txs.
exp_mempool_size = conn.rpc.getmempoolinfo()['size'] + len(
cpfp_txs_pay_for_ancestors)
elapsed2 = self.send_txs(rpcsend, conn, cpfp_txs_pay_for_ancestors,
exp_mempool_size, timeout)
# Check if there is a required number of txs in the mempool.
check_mempool_equals(conn.rpc, cpfp_txs_pay_for_ancestors + txchains,
timeout)
#
# Check getminingcandidate result: There should be all cpfp txs (+ ancestor txs) in the block template.
#
wait_until(lambda: conn.rpc.getminingcandidate()["num_tx"] == len(
cpfp_txs_pay_for_ancestors + txchains) + 1) # +1 a coinbase tx
#
# Collect stats.
#
interface_name = "p2p" if rpcsend is None else rpcsend._service_name
self.log.info(
"[%s]: Submit and process %d txchains of length %d (%d relay_fee std txs) [time duration: %.6f sec]",
interface_name, num_of_chains, chain_length,
num_of_chains * chain_length, elapsed1)
self.log.info(
"[%s]: Submit and process %d cpfp std txs (each pays mining_fee) [time duration: %.6f sec]",
interface_name, len(cpfp_txs_pay_for_ancestors), elapsed2)
self.log.info(
"[%s]: Total time to submit and process %d std txs took %.6f sec",
interface_name,
num_of_chains * chain_length + len(cpfp_txs_pay_for_ancestors),
elapsed1 + elapsed2)
return elapsed1 + elapsed2
def run_test(self):
with self.run_node_with_connections(
"Scenario 1: Create complex graph of txs, doublespend some fo them and check mempool after",
0, ["-minrelaytxfee=0"],
number_of_connections=1) as (conn, ):
# create block with coinbase
coinbase = create_coinbase(height=1)
first_block = create_block(int(conn.rpc.getbestblockhash(), 16),
coinbase=coinbase)
first_block.solve()
conn.send_message(msg_block(first_block))
wait_until(lambda: conn.rpc.getbestblockhash() == first_block.hash,
check_interval=0.3)
#mature the coinbase
conn.rpc.generate(150)
funding_tx = self.create_tx([(coinbase, 0)], 2)
conn.send_message(msg_tx(funding_tx))
check_mempool_equals(conn.rpc, [funding_tx])
conn.rpc.generate(1)
last_block_info = conn.rpc.getblock(conn.rpc.getbestblockhash())
block = create_block(
int(last_block_info["hash"], 16),
coinbase=create_coinbase(height=last_block_info["height"] + 1),
nTime=last_block_info["time"] + 1)
low_fee_tx = self.create_tx([(funding_tx, 0)], 2)
block.vtx.append(low_fee_tx)
block.hashMerkleRoot = block.calc_merkle_root()
block.calc_sha256()
block.solve()
conn.send_message(msg_block(block))
wait_until(lambda: conn.rpc.getbestblockhash() == block.hash,
check_interval=0.3)
# tx_double_spend_mempool tx_to_be_mined
# | | | |
# -------------------------------------------------------
# | | | |
# | +-------+ +--------+ |
# | | | |
# | tx_descedant_of_conflict_1 tx_stay_in_mempool_1
# | | | |
# | | | |
# | tx_descedant_of_conflict_2 | tx_stay_in_mempool_2
# | | | |
# | | | |
# | tx_descedant_of_conflict_3 |
# | |
# +---------+ +--------------------------------+
# | |
# tx_descedant_of_conflict_4
tx_double_spend_mempool = self.create_tx([(low_fee_tx, 0)], 2)
tx_double_spend_block = self.create_tx([(low_fee_tx, 0)], 1)
tx_to_be_mined = self.create_tx([(low_fee_tx, 1)], 2)
tx_descedant_of_conflict_1 = self.create_tx(
[(tx_double_spend_mempool, 0), (tx_to_be_mined, 0)], 1)
tx_descedant_of_conflict_2 = self.create_tx(
[(tx_descedant_of_conflict_1, 0)], 1)
tx_stay_in_mempool_1 = self.create_tx([(tx_to_be_mined, 1)], 2)
tx_descedant_of_conflict_3 = self.create_tx(
[(tx_descedant_of_conflict_2, 0),
(tx_stay_in_mempool_1, 0)], 2)
tx_stay_in_mempool_2 = self.create_tx([(tx_stay_in_mempool_1, 1)],
1)
tx_descedant_of_conflict_4 = self.create_tx(
[(tx_double_spend_mempool, 1), (tx_stay_in_mempool_2, 0)], 1)
conn.send_message(msg_tx(tx_double_spend_mempool))
conn.send_message(msg_tx(tx_to_be_mined))
conn.send_message(msg_tx(tx_descedant_of_conflict_1))
conn.send_message(msg_tx(tx_descedant_of_conflict_2))
conn.send_message(msg_tx(tx_stay_in_mempool_1))
conn.send_message(msg_tx(tx_descedant_of_conflict_3))
conn.send_message(msg_tx(tx_stay_in_mempool_2))
conn.send_message(msg_tx(tx_descedant_of_conflict_4))
check_mempool_equals(conn.rpc, [
tx_double_spend_mempool, tx_to_be_mined,
tx_descedant_of_conflict_1, tx_descedant_of_conflict_2,
tx_stay_in_mempool_1, tx_descedant_of_conflict_3,
tx_stay_in_mempool_2, tx_descedant_of_conflict_4
])
block2 = create_block(
block.sha256,
coinbase=create_coinbase(height=last_block_info["height"] + 2),
nTime=last_block_info["time"] + 2)
block2.vtx.append(tx_double_spend_block)
block2.vtx.append(tx_to_be_mined)
block2.hashMerkleRoot = block2.calc_merkle_root()
block2.calc_sha256()
block2.solve()
conn.send_message(msg_block(block2))
wait_until(lambda: conn.rpc.getbestblockhash() == block2.hash,
check_interval=0.3)
check_mempool_equals(conn.rpc,
[tx_stay_in_mempool_1, tx_stay_in_mempool_2])