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test_closing.py
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from fixtures import * # noqa: F401,F403
from pyln.client import RpcError, Millisatoshi
from shutil import copyfile
from pyln.testing.utils import SLOW_MACHINE
from utils import (
only_one, sync_blockheight, wait_for, TIMEOUT,
account_balance, first_channel_id, closing_fee, TEST_NETWORK,
scriptpubkey_addr, calc_lease_fee,
check_utxos_channel, check_coin_moves,
check_balance_snaps, mine_funding_to_announce, check_inspect_channel,
first_scid
)
import bitcoin
import os
import queue
import pytest
import re
import subprocess
import threading
import unittest
def test_closing_simple(node_factory, bitcoind, chainparams):
coin_mvt_plugin = os.path.join(os.getcwd(), 'tests/plugins/coin_movements.py')
l1, l2 = node_factory.line_graph(2, opts={'plugin': coin_mvt_plugin})
chan = l1.get_channel_scid(l2)
channel_id = first_channel_id(l1, l2)
fee = closing_fee(3750, 2) if not chainparams['elements'] else 4278
l1.pay(l2, 200000000)
assert bitcoind.rpc.getmempoolinfo()['size'] == 0
billboard = only_one(l1.rpc.listpeerchannels(l2.info['id'])['channels'])['status']
assert billboard == ['CHANNELD_NORMAL:Channel ready for use.']
billboard = only_one(l2.rpc.listpeerchannels(l1.info['id'])['channels'])['status']
assert billboard == ['CHANNELD_NORMAL:Channel ready for use.']
bitcoind.generate_block(5)
l1.wait_channel_active(chan)
l2.wait_channel_active(chan)
billboard = only_one(l1.rpc.listpeerchannels(l2.info['id'])['channels'])['status']
# This may either be from a local_update or an announce, so just
# check for the substring
assert 'CHANNELD_NORMAL:Channel ready for use.' in billboard[0]
# Make sure all HTLCs resolved before we close!
wait_for(lambda: only_one(l2.rpc.listpeerchannels()['channels'])['htlcs'] == [])
l1.rpc.close(chan)
l1.daemon.wait_for_log(' to CHANNELD_SHUTTING_DOWN')
l2.daemon.wait_for_log(' to CHANNELD_SHUTTING_DOWN')
l1.daemon.wait_for_log(' to CLOSINGD_SIGEXCHANGE')
l2.daemon.wait_for_log(' to CLOSINGD_SIGEXCHANGE')
# And should put closing into mempool.
l1.daemon.wait_for_log('sendrawtx exit 0')
l2.daemon.wait_for_log('sendrawtx exit 0')
# Both nodes should have disabled the channel in gossip
wait_for(lambda: not any([c['active'] for c in l1.rpc.listchannels()['channels']]))
wait_for(lambda: not any([c['active'] for c in l2.rpc.listchannels()['channels']]))
assert bitcoind.rpc.getmempoolinfo()['size'] == 1
# Now grab the close transaction
closetxid = only_one(bitcoind.rpc.getrawmempool(False))
billboard = only_one(l1.rpc.listpeerchannels(l2.info['id'])['channels'])['status']
assert billboard == [
'CLOSINGD_SIGEXCHANGE:We agreed on a closing fee of {} satoshi for tx:{}'.format(fee, closetxid),
]
bitcoind.generate_block(1)
l1.daemon.wait_for_log(r'Owning output.* \(SEGWIT\).* txid %s.* CONFIRMED' % closetxid)
l2.daemon.wait_for_log(r'Owning output.* \(SEGWIT\).* txid %s.* CONFIRMED' % closetxid)
# Make sure both nodes have grabbed their close tx funds
assert closetxid in set([o['txid'] for o in l1.rpc.listfunds()['outputs']])
assert closetxid in set([o['txid'] for o in l2.rpc.listfunds()['outputs']])
wait_for(lambda: only_one(l1.rpc.listpeerchannels(l2.info['id'])['channels'])['status'] == [
'CLOSINGD_SIGEXCHANGE:We agreed on a closing fee of {} satoshi for tx:{}'.format(fee, closetxid),
'ONCHAIN:Tracking mutual close transaction',
'ONCHAIN:All outputs resolved: waiting 99 more blocks before forgetting channel'
])
bitcoind.generate_block(9)
wait_for(lambda: only_one(l1.rpc.listpeerchannels(l2.info['id'])['channels'])['status'] == [
'CLOSINGD_SIGEXCHANGE:We agreed on a closing fee of {} satoshi for tx:{}'.format(fee, closetxid),
'ONCHAIN:Tracking mutual close transaction',
'ONCHAIN:All outputs resolved: waiting 90 more blocks before forgetting channel'
])
# Make sure both have forgotten about it
bitcoind.generate_block(90)
wait_for(lambda: len(l1.rpc.listchannels()['channels']) == 0)
wait_for(lambda: len(l2.rpc.listchannels()['channels']) == 0)
# The entry in the channels table should still be there
assert l1.db_query("SELECT count(*) as c FROM channels;")[0]['c'] == 1
assert l2.db_query("SELECT count(*) as c FROM channels;")[0]['c'] == 1
assert account_balance(l1, channel_id) == 0
assert account_balance(l2, channel_id) == 0
expected_1 = {
'0': [('wallet', ['deposit'], ['withdrawal'], 'A')],
'A': [('wallet', ['deposit'], None, None), ('cid1', ['channel_open', 'opener'], ['channel_close'], 'B')],
'B': [('wallet', ['deposit'], None, None), ('external', ['to_them'], None, None)],
}
expected_2 = {
'A': [('cid1', ['channel_open'], ['channel_close'], 'B')],
'B': [('wallet', ['deposit'], None, None), ('external', ['to_them'], None, None)],
}
tags = check_utxos_channel(l1, [channel_id], expected_1)
check_utxos_channel(l2, [channel_id], expected_2, tags)
def test_closing_while_disconnected(node_factory, bitcoind, executor):
l1, l2 = node_factory.line_graph(2, opts={'may_reconnect': True})
chan = l1.get_channel_scid(l2)
l1.pay(l2, 200000000)
l2.stop()
# The close should still be triggered afterwards.
fut = executor.submit(l1.rpc.close, chan, 0)
l1.daemon.wait_for_log(' to CHANNELD_SHUTTING_DOWN')
l2.start()
fut.result(TIMEOUT)
l1.daemon.wait_for_log(' to CLOSINGD_SIGEXCHANGE')
l2.daemon.wait_for_log(' to CLOSINGD_SIGEXCHANGE')
# And should put closing into mempool.
l1.daemon.wait_for_log('sendrawtx exit 0')
l2.daemon.wait_for_log('sendrawtx exit 0')
bitcoind.generate_block(101)
wait_for(lambda: len(l1.rpc.listchannels()['channels']) == 0)
wait_for(lambda: len(l2.rpc.listchannels()['channels']) == 0)
def test_closing_disconnected_notify(node_factory, bitcoind, executor):
l1, l2 = node_factory.line_graph(2)
l1.pay(l2, 200000000)
l2.stop()
# Wait until channeld is definitely gone.
wait_for(lambda: 'owner' not in only_one(l1.rpc.listpeerchannels()['channels']))
out = subprocess.check_output(['cli/lightning-cli',
'--network={}'.format(TEST_NETWORK),
'--lightning-dir={}'
.format(l1.daemon.lightning_dir),
'close',
l2.info['id'],
'5']).decode('utf-8').splitlines()
assert out[0] == '# peer is offline, will negotiate once they reconnect (5 seconds before unilateral close).'
assert out[1] == '# Timed out, forcing close.'
assert not any([line.startswith('#') for line in out[2:]])
def test_closing_id(node_factory):
"""Test closing using peer ID and full channel ID
"""
l1, l2 = node_factory.get_nodes(2)
# Close by full channel ID.
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
l1.fundchannel(l2, 10**6)
cid = l2.rpc.listpeerchannels()['channels'][0]['channel_id']
l2.rpc.close(cid)
# Technically, l2 disconnects before l1 finishes analyzing the final msg.
# Wait for them to both consider it closed!
wait_for(lambda: any([c['state'] == 'CLOSINGD_COMPLETE' for c in l1.rpc.listpeerchannels(l2.info['id'])['channels']]))
wait_for(lambda: any([c['state'] == 'CLOSINGD_COMPLETE' for c in l2.rpc.listpeerchannels(l1.info['id'])['channels']]))
# Close by peer ID.
l2.rpc.connect(l1.info['id'], 'localhost', l1.port)
l1.daemon.wait_for_log("Handed peer, entering loop")
l2.fundchannel(l1, 10**6)
pid = l1.info['id']
l2.rpc.close(pid)
wait_for(lambda: any([c['state'] == 'CLOSINGD_COMPLETE' for c in l1.rpc.listpeerchannels(l2.info['id'])['channels']]))
wait_for(lambda: any([c['state'] == 'CLOSINGD_COMPLETE' for c in l2.rpc.listpeerchannels(l1.info['id'])['channels']]))
@unittest.skipIf(TEST_NETWORK != 'regtest', 'FIXME: broken under elements')
@pytest.mark.slow_test
def test_closing_different_fees(node_factory, bitcoind, executor):
l1 = node_factory.get_node()
# Default feerate = 15000/11000/7500/1000
# It will start at the second number, accepting anything above the first.
feerates = [[20000, 11000, 15000, 7400], [8000, 6000, 1001, 100]]
balance = [False, True]
num_peers = len(feerates) * len(balance)
addr = l1.rpc.newaddr()['bech32']
bitcoind.rpc.sendtoaddress(addr, 1)
numfunds = len(l1.rpc.listfunds()['outputs'])
bitcoind.generate_block(1)
wait_for(lambda: len(l1.rpc.listfunds()['outputs']) > numfunds)
# Create them in a batch, for speed!
peers = []
for feerate in feerates:
for b in balance:
p = node_factory.get_node(feerates=feerate)
p.feerate = feerate
p.balance = b
l1.rpc.connect(p.info['id'], 'localhost', p.port)
peers.append(p)
for p in peers:
p.channel = l1.rpc.fundchannel(p.info['id'], 10**6, minconf=0)['channel_id']
# Technically, this is async to fundchannel returning.
l1.daemon.wait_for_log('sendrawtx exit 0')
mine_funding_to_announce(bitcoind, peers, num_blocks=6)
# Now wait for them all to hit normal state, do payments
l1.daemon.wait_for_logs(['update for channel .* now ACTIVE'] * num_peers
+ ['to CHANNELD_NORMAL'] * num_peers)
for p in peers:
if p.balance:
l1.pay(p, 100000000)
# Now close all channels (not unilaterally!)
closes = [executor.submit(l1.rpc.close, p.channel, 0) for p in peers]
for c in closes:
c.result(90)
# close does *not* wait for the sendrawtransaction, so do that!
# Note that since they disagree on the ideal fee, they may conflict
# (first one in will win), so we cannot look at logs, we need to
# wait for mempool.
wait_for(lambda: bitcoind.rpc.getmempoolinfo()['size'] == num_peers)
bitcoind.generate_block(1)
for p in peers:
p.daemon.wait_for_log(' to ONCHAIN')
wait_for(lambda: 'ONCHAIN:Tracking mutual close transaction' in only_one(p.rpc.listpeerchannels(l1.info['id'])['channels'])['status'])
l1.daemon.wait_for_logs([' to ONCHAIN'] * num_peers)
def test_closing_negotiation_reconnect(node_factory, bitcoind):
disconnects = ['-WIRE_CLOSING_SIGNED',
'+WIRE_CLOSING_SIGNED']
l1, l2 = node_factory.line_graph(2, opts=[{'disconnect': disconnects,
'may_reconnect': True},
{'may_reconnect': True}])
l1.pay(l2, 200000000)
assert bitcoind.rpc.getmempoolinfo()['size'] == 0
l1.rpc.close(l2.info['id'])
l1.daemon.wait_for_log(r'State changed from CHANNELD_NORMAL to CHANNELD_SHUTTING_DOWN')
l2.daemon.wait_for_log(r'State changed from CHANNELD_NORMAL to CHANNELD_SHUTTING_DOWN')
# Now verify that the closing tx is in the mempool.
bitcoind.generate_block(6, wait_for_mempool=1)
sync_blockheight(bitcoind, [l1, l2])
for n in [l1, l2]:
# Ensure we actually got a mutual close.
n.daemon.wait_for_log(r'Resolved FUNDING_TRANSACTION/FUNDING_OUTPUT by MUTUAL_CLOSE')
def test_closing_specified_destination(node_factory, bitcoind, chainparams):
l1, l2, l3, l4 = node_factory.get_nodes(4)
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
l1.rpc.connect(l3.info['id'], 'localhost', l3.port)
l1.rpc.connect(l4.info['id'], 'localhost', l4.port)
chan12, _ = l1.fundchannel(l2, 10**6)
chan13, _ = l1.fundchannel(l3, 10**6)
chan14, _ = l1.fundchannel(l4, 10**6)
l1.pay(l2, 100000000)
l1.pay(l3, 100000000)
l1.pay(l4, 100000000)
# Make sure HTLCs completely expired before we mine, so they don't
# unilaterally close!
for n in l1, l2, l3, l4:
wait_for(lambda: all(c['htlcs'] == [] for c in n.rpc.listpeerchannels()['channels']))
mine_funding_to_announce(bitcoind, [l1, l2, l3, l4])
# Make sure they all see all the gossip before close, otherwise they might
# get upset with "bad gossip!"
for n in [l1, l2, l3, l4]:
wait_for(lambda: len(n.rpc.listchannels()['channels']) == 6)
wait_for(lambda: ['alias' in node for node in n.rpc.listnodes()['nodes']] == [True] * 4)
# If we don't wait for gossip to propagate, then we can get bad gossip msgs if it
# propagates after close!
for n in l1, l2, l3, l4:
wait_for(lambda: len(n.rpc.listchannels()['channels']) == 6)
wait_for(lambda: ['alias' in node for node in n.rpc.listnodes()['nodes']] == [True] * 4)
addr = chainparams['example_addr']
l1.rpc.close(chan12, None, addr)
l1.rpc.call('close', {'id': chan13, 'destination': addr})
l1.rpc.call('close', [chan14, None, addr])
l1.daemon.wait_for_logs([' to CLOSINGD_SIGEXCHANGE'] * 3)
# Both nodes should have disabled the channel in gossip
wait_for(lambda: not any([c['active'] for c in l1.rpc.listchannels()['channels']]))
wait_for(lambda: not any([c['active'] for c in l2.rpc.listchannels()['channels']]))
wait_for(lambda: bitcoind.rpc.getmempoolinfo()['size'] == 3)
# Now grab the close transaction
closetxs = {}
for i, n in enumerate([l2, l3, l4]):
billboard = only_one(l1.rpc.listpeerchannels(n.info['id'])['channels'])['status'][0]
m = re.search(r'CLOSINGD_SIGEXCHANGE.* tx:([a-f0-9]{64})', billboard)
closetxs[n] = m.group(1)
bitcoind.generate_block(1)
sync_blockheight(bitcoind, [l1, l2, l3, l4])
# l1 can't spent the output to addr.
for txid in closetxs.values():
assert not l1.daemon.is_in_log(r'Owning output.* \(SEGWIT\).* txid {}.* CONFIRMED'.format(txid))
# Check the txid has at least 1 confirmation
for n, txid in closetxs.items():
n.daemon.wait_for_log(r'Owning output.* \(SEGWIT\).* txid {}.* CONFIRMED'.format(txid))
for n in [l2, l3, l4]:
# Make sure both nodes have grabbed their close tx funds
closetx = closetxs[n]
outputs = n.rpc.listfunds()['outputs']
assert closetx in set([o['txid'] for o in outputs])
output_num2 = [o for o in outputs if o['txid'] == closetx][0]['output']
output_num1 = 0 if output_num2 == 1 else 1
# Check the another address is addr
assert addr == scriptpubkey_addr(bitcoind.rpc.gettxout(closetx, output_num1)['scriptPubKey'])
assert 1 == bitcoind.rpc.gettxout(closetx, output_num1)['confirmations']
def closing_negotiation_step(node_factory, bitcoind, chainparams, opts):
def feerate_for(target, minimum=0, maximum=10000000):
"""Binary search to find feerate"""
assert minimum != maximum
mid = (minimum + maximum) // 2
mid_fee = closing_fee(mid, 1)
if mid_fee > target:
return feerate_for(target, minimum, mid)
elif mid_fee < target:
return feerate_for(target, mid, maximum)
else:
return mid
orate = feerate_for(21000) # closing fee negotiation starts at 21000
prate = feerate_for(20000) # closing fee negotiation starts at 20000
opener, peer = node_factory.line_graph(2, opts=[{'feerates': (orate, orate, orate, orate),
'dev-force-features': "-23"},
{'feerates': (prate, prate, prate, prate),
'dev-force-features': "-23"}])
opener_id = opener.info['id']
peer_id = peer.info['id']
assert bitcoind.rpc.getmempoolinfo()['size'] == 0
if opts['close_initiated_by'] == 'opener':
opener.rpc.close(peer_id=peer_id, fee_negotiation_step=opts['fee_negotiation_step'])
else:
assert opts['close_initiated_by'] == 'peer'
peer.rpc.close(peer_id=opener_id, fee_negotiation_step=opts['fee_negotiation_step'])
# Get the proclaimed closing fee from the two nodes' statuses
status_agreed_regex = re.compile("agreed on a closing fee of ([0-9]+) satoshi")
# [fee_from_opener_status, fee_from_peer_status]
fees_from_status = [None, None]
def get_fee_from_status(node, peer_id, i):
nonlocal fees_from_status
channel = only_one(node.rpc.listpeerchannels(peer_id)['channels'])
status = channel['status'][0]
m = status_agreed_regex.search(status)
if not m:
return False
fees_from_status[i] = int(m.group(1))
return True
wait_for(lambda: get_fee_from_status(opener, peer_id, 0))
wait_for(lambda: get_fee_from_status(peer, opener_id, 1))
assert opts['expected_close_fee'] == fees_from_status[0]
assert opts['expected_close_fee'] == fees_from_status[1]
# Get the closing transaction from the bitcoind mempool and get its fee
mempool = None
mempool_tx_ids = None
def get_mempool_when_size_1():
nonlocal mempool, mempool_tx_ids
mempool = bitcoind.rpc.getrawmempool(True)
mempool_tx_ids = list(mempool.keys())
return len(mempool_tx_ids) == 1
wait_for(get_mempool_when_size_1)
close_tx_id = mempool_tx_ids[0]
# v22.99.0-8fe6f5a6fbcd at least doesn't have 'fee', it has 'fees'.
if 'fees' in mempool[close_tx_id]:
fee_mempool = round(mempool[close_tx_id]['fees']['base'] * 10**8)
else:
fee_mempool = round(mempool[close_tx_id]['fee'] * 10**8)
assert opts['expected_close_fee'] == fee_mempool
@unittest.skipIf(TEST_NETWORK == 'liquid-regtest', "Different closing fees")
def test_closing_negotiation_step_30pct(node_factory, bitcoind, chainparams):
"""Test that the closing fee negotiation step works, 30%"""
opts = {}
opts['fee_negotiation_step'] = '30%'
opts['close_initiated_by'] = 'opener'
opts['expected_close_fee'] = 20537
closing_negotiation_step(node_factory, bitcoind, chainparams, opts)
opts['close_initiated_by'] = 'peer'
opts['expected_close_fee'] = 20233
closing_negotiation_step(node_factory, bitcoind, chainparams, opts)
@unittest.skipIf(TEST_NETWORK == 'liquid-regtest', "Different closing fees")
def test_closing_negotiation_step_100pct(node_factory, bitcoind, chainparams):
"""Test that the closing fee negotiation step works, 100%"""
opts = {}
opts['fee_negotiation_step'] = '100%'
opts['close_initiated_by'] = 'opener'
opts['expected_close_fee'] = 20001
closing_negotiation_step(node_factory, bitcoind, chainparams, opts)
# The close fee of 20499 looks strange in this case - one would expect
# to have a number close to 21000. This is because
# * the range is initially set to [20000 (peer), 21000 (opener)]
# * the opener is always first to propose, he uses 50% step, so he proposes 20500
# * the range is narrowed to [20001, 20499] and the peer proposes 20499
opts['close_initiated_by'] = 'peer'
opts['expected_close_fee'] = 20499
closing_negotiation_step(node_factory, bitcoind, chainparams, opts)
@unittest.skipIf(TEST_NETWORK == 'liquid-regtest', "Different closing fees")
def test_closing_negotiation_step_1sat(node_factory, bitcoind, chainparams):
"""Test that the closing fee negotiation step works, 1sat"""
opts = {}
opts['fee_negotiation_step'] = '1'
opts['close_initiated_by'] = 'opener'
opts['expected_close_fee'] = 20989
closing_negotiation_step(node_factory, bitcoind, chainparams, opts)
opts['close_initiated_by'] = 'peer'
opts['expected_close_fee'] = 20010
closing_negotiation_step(node_factory, bitcoind, chainparams, opts)
@unittest.skipIf(TEST_NETWORK == 'liquid-regtest', "Different closing fees")
def test_closing_negotiation_step_700sat(node_factory, bitcoind, chainparams):
"""Test that the closing fee negotiation step works, 700sat"""
opts = {}
opts['fee_negotiation_step'] = '700'
opts['close_initiated_by'] = 'opener'
opts['expected_close_fee'] = 20151
closing_negotiation_step(node_factory, bitcoind, chainparams, opts)
opts['close_initiated_by'] = 'peer'
opts['expected_close_fee'] = 20499
closing_negotiation_step(node_factory, bitcoind, chainparams, opts)
@pytest.mark.parametrize("anchors", [False, True])
def test_penalty_inhtlc(node_factory, bitcoind, executor, chainparams, anchors):
"""Test penalty transaction with an incoming HTLC"""
if chainparams['elements'] and anchors:
pytest.skip('elementsd anchors unsupported')
# We track channel balances, to verify that accounting is ok.
coin_mvt_plugin = os.path.join(os.getcwd(), 'tests/plugins/coin_movements.py')
# We suppress each one after first commit; HTLC gets added not fulfilled.
# Feerates identical so we don't get gratuitous commit to update them
opts = {'dev-disable-commit-after': 1,
'plugin': coin_mvt_plugin}
if anchors is False:
opts['dev-force-features'] = "-23"
# FIXME: | for dicts was added in Python 3.9 apparently.
l1, l2 = node_factory.line_graph(2, opts=[{**opts, **{'may_fail': True,
'feerates': (7500, 7500, 7500, 7500),
# We try to cheat!
'broken_log': r"onchaind-chan#[0-9]*: Could not find resolution for output .*: did \*we\* cheat\?"}},
opts])
channel_id = first_channel_id(l1, l2)
scid = first_scid(l1, l2)
# Now, this will get stuck due to l1 commit being disabled..
t = executor.submit(l1.pay, l2, 100000000)
assert l1.is_local_channel_active(scid)
assert l2.is_local_channel_active(scid)
# They should both have commitments blocked now.
l1.daemon.wait_for_log('dev-disable-commit-after: disabling')
l2.daemon.wait_for_log('dev-disable-commit-after: disabling')
# Make sure l1 got l2's commitment to the HTLC, and sent to master.
l1.daemon.wait_for_log('got commitsig')
# Take our snapshot.
tx = l1.rpc.dev_sign_last_tx(l2.info['id'])['tx']
# Let them continue
l1.rpc.dev_reenable_commit(l2.info['id'])
l2.rpc.dev_reenable_commit(l1.info['id'])
# Should fulfill.
l1.daemon.wait_for_log('peer_in WIRE_UPDATE_FULFILL_HTLC')
l1.daemon.wait_for_log('peer_out WIRE_REVOKE_AND_ACK')
l2.daemon.wait_for_log('peer_out WIRE_UPDATE_FULFILL_HTLC')
l1.daemon.wait_for_log('peer_in WIRE_REVOKE_AND_ACK')
# Payment should now complete.
t.result(timeout=10)
# Make sure both sides completely settled.
wait_for(lambda: all([only_one(n.rpc.listpeerchannels()['channels'])['htlcs'] == [] for n in (l1, l2)]))
# Now we really mess things up!
bitcoind.rpc.sendrawtransaction(tx)
bitcoind.generate_block(1)
l2.daemon.wait_for_log(' to ONCHAIN')
# FIXME: l1 should try to stumble along!
wait_for(lambda: l2.is_local_channel_active(scid) is False)
# l2 should spend all of the outputs (except to-us).
# Could happen in any order, depending on commitment tx.
((_, txid1, blocks1), (_, txid2, blocks2)) = \
l2.wait_for_onchaind_txs(('OUR_PENALTY_TX',
'THEIR_REVOKED_UNILATERAL/DELAYED_CHEAT_OUTPUT_TO_THEM'),
('OUR_PENALTY_TX',
'THEIR_REVOKED_UNILATERAL/THEIR_HTLC'))
assert blocks1 == 0
assert blocks2 == 0
# FIXME: test HTLC tx race!
bitcoind.generate_block(100, wait_for_mempool=[txid1, txid2])
sync_blockheight(bitcoind, [l1, l2])
wait_for(lambda: l2.rpc.listpeerchannels()['channels'] == [])
# Do one last pass over the logs to extract the reactions l2 sent
needles = [
# The first needle will match, but since we don't have a direct output
# for l2 it won't result in an output, hence the comment:
# r'Resolved FUNDING_TRANSACTION/FUNDING_OUTPUT by THEIR_REVOKED_UNILATERAL .([a-f0-9]{64}).',
r'Resolved THEIR_REVOKED_UNILATERAL/DELAYED_CHEAT_OUTPUT_TO_THEM by our proposal OUR_PENALTY_TX .([a-f0-9]{64}).',
r'Resolved THEIR_REVOKED_UNILATERAL/THEIR_HTLC by our proposal OUR_PENALTY_TX .([a-f0-9]{64}).',
]
matches = list(map(l2.daemon.is_in_log, needles))
# Now extract the txids for these responses
txids = set([re.search(r'\(([0-9a-f]{64})\)', m).group(1) for m in matches])
# We should have one confirmed output for each of the above reactions in
# the list of funds we own.
outputs = l2.rpc.listfunds()['outputs']
assert [o['status'] for o in outputs] == ['confirmed'] * 2
assert set([o['txid'] for o in outputs]) == txids
assert account_balance(l1, channel_id) == 0
assert account_balance(l2, channel_id) == 0
# l1 loses all of their channel balance to the peer, as penalties
expected_1 = {
'0': [('wallet', ['deposit'], ['withdrawal'], 'A')],
'A': [('wallet', ['deposit'], None, None), ('cid1', ['channel_open', 'opener'], ['channel_close'], 'B')],
'B': [('external', ['penalty'], None, None), ('external', ['penalty'], None, None)],
}
# l2 sweeps all of l1's closing outputs
expected_2 = {
'A': [('cid1', ['channel_open'], ['channel_close'], 'B')],
'B': [('cid1', ['penalty'], ['to_wallet'], 'C'), ('cid1', ['penalty'], ['to_wallet'], 'D')],
'C': [('wallet', ['deposit'], None, None)],
'D': [('wallet', ['deposit'], None, None)]
}
if anchors:
expected_1['B'].append(('external', ['anchor'], None, None))
expected_2['B'].append(('external', ['anchor'], None, None))
expected_1['B'].append(('wallet', ['anchor', 'ignored'], None, None))
expected_2['B'].append(('wallet', ['anchor', 'ignored'], None, None))
# We use a subset of tags in expected_2 that are used in expected_1
tags = check_utxos_channel(l1, [channel_id], expected_1)
check_utxos_channel(l2, [channel_id], expected_2, tags)
@pytest.mark.parametrize("anchors", [False, True])
def test_penalty_outhtlc(node_factory, bitcoind, executor, chainparams, anchors):
"""Test penalty transaction with an outgoing HTLC"""
if chainparams['elements'] and anchors:
pytest.skip('elementsd anchors unsupported')
# We track channel balances, to verify that accounting is ok.
coin_mvt_plugin = os.path.join(os.getcwd(), 'tests/plugins/coin_movements.py')
opts = {'dev-disable-commit-after': 3,
'plugin': coin_mvt_plugin}
if anchors is False:
opts['dev-force-features'] = "-23"
# First we need to get funds to l2, so suppress after second.
# Feerates identical so we don't get gratuitous commit to update them
l1, l2 = node_factory.line_graph(2,
opts=[{**opts, **{'may_fail': True,
'feerates': (7500, 7500, 7500, 7500),
# We try to cheat!
'broken_log': r"onchaind-chan#[0-9]*: Could not find resolution for output .*: did \*we\* cheat\?"}},
opts])
channel_id = first_channel_id(l1, l2)
# Move some across to l2.
l1.pay(l2, 200000000)
assert not l1.daemon.is_in_log('dev-disable-commit-after: disabling')
assert not l2.daemon.is_in_log('dev-disable-commit-after: disabling')
# Now, this will get stuck due to l1 commit being disabled..
t = executor.submit(l2.pay, l1, 100000000)
# Make sure we get signature from them.
l1.daemon.wait_for_log('peer_in WIRE_UPDATE_ADD_HTLC')
l1.daemon.wait_for_log('peer_in WIRE_COMMITMENT_SIGNED')
# They should both have commitments blocked now.
l1.daemon.wait_for_log('dev-disable-commit-after: disabling')
l2.daemon.wait_for_log('dev-disable-commit-after: disabling')
# Make sure both sides got revoke_and_ack for that commitment.
l1.daemon.wait_for_log('peer_in WIRE_REVOKE_AND_ACK')
l2.daemon.wait_for_log('peer_in WIRE_REVOKE_AND_ACK')
# Take our snapshot.
tx = l1.rpc.dev_sign_last_tx(l2.info['id'])['tx']
# Let them continue
l1.rpc.dev_reenable_commit(l2.info['id'])
l2.rpc.dev_reenable_commit(l1.info['id'])
# Thread should complete.
t.result(timeout=10)
# Make sure both sides got revoke_and_ack for final.
wait_for(lambda: all([only_one(n.rpc.listpeerchannels()['channels'])['htlcs'] == [] for n in (l1, l2)]))
# Now we really mess things up!
bitcoind.rpc.sendrawtransaction(tx)
bitcoind.generate_block(1)
l2.daemon.wait_for_log(' to ONCHAIN')
# FIXME: l1 should try to stumble along!
# l2 should spend all of the outputs (except to-us).
# Could happen in any order, depending on commitment tx.
needle = l2.daemon.logsearch_start
((_, txid1, blocks1), (_, txid2, blocks2)) = \
l2.wait_for_onchaind_txs(('OUR_PENALTY_TX',
'THEIR_REVOKED_UNILATERAL/DELAYED_CHEAT_OUTPUT_TO_THEM'),
('OUR_PENALTY_TX',
'THEIR_REVOKED_UNILATERAL/OUR_HTLC'))
assert blocks1 == 0
assert blocks2 == 0
l2.daemon.logsearch_start = needle
l2.daemon.wait_for_log('Ignoring output.*: THEIR_REVOKED_UNILATERAL/OUTPUT_TO_US')
# FIXME: test HTLC tx race!
# 100 blocks later, all resolved.
bitcoind.generate_block(100, wait_for_mempool=[txid1, txid2])
sync_blockheight(bitcoind, [l1, l2])
peer = only_one(l2.rpc.listpeers()["peers"])
wait_for(lambda: l2.rpc.listpeerchannels(peer["id"])['channels'] == [])
# Do one last pass over the logs to extract the reactions l2 sent
l2.daemon.logsearch_start = needle
needles = [
r'Resolved FUNDING_TRANSACTION/FUNDING_OUTPUT by THEIR_REVOKED_UNILATERAL .([a-f0-9]{64}).',
r'Resolved THEIR_REVOKED_UNILATERAL/DELAYED_CHEAT_OUTPUT_TO_THEM by our proposal OUR_PENALTY_TX .([a-f0-9]{64}).',
r'Resolved THEIR_REVOKED_UNILATERAL/OUR_HTLC by our proposal OUR_PENALTY_TX .([a-f0-9]{64}).',
]
matches = list(map(l2.daemon.is_in_log, needles))
# Now extract the txids for these responses
txids = set([re.search(r'\(([0-9a-f]{64})\)', m).group(1) for m in matches])
# We should have one confirmed output for each of the above reactions in
# the list of funds we own.
outputs = l2.rpc.listfunds()['outputs']
assert [o['status'] for o in outputs] == ['confirmed'] * 3
assert set([o['txid'] for o in outputs]) == txids
assert account_balance(l1, channel_id) == 0
assert account_balance(l2, channel_id) == 0
# l1 loses all of their channel balance to the peer, as penalties
expected_1 = {
'0': [('wallet', ['deposit'], ['withdrawal'], 'A')],
'A': [('wallet', ['deposit'], None, None), ('cid1', ['channel_open', 'opener'], ['channel_close'], 'B')],
'B': [('external', ['penalty'], None, None), ('external', ['penalty'], None, None), ('external', ['penalty'], None, None)],
}
# l2 sweeps all of l1's closing outputs
expected_2 = {
'A': [('cid1', ['channel_open'], ['channel_close'], 'B')],
'B': [('wallet', ['deposit'], None, None), ('cid1', ['penalty'], ['to_wallet'], 'C'), ('cid1', ['penalty'], ['to_wallet'], 'D')],
'C': [('wallet', ['deposit'], None, None)],
'D': [('wallet', ['deposit'], None, None)]
}
if anchors:
expected_1['B'].append(('external', ['anchor'], None, None))
expected_2['B'].append(('external', ['anchor'], None, None))
expected_1['B'].append(('wallet', ['anchor', 'ignored'], None, None))
expected_2['B'].append(('wallet', ['anchor', 'ignored'], None, None))
# We use a subset of tags in expected_2 that are used in expected_1
tags = check_utxos_channel(l1, [channel_id], expected_1)
check_utxos_channel(l2, [channel_id], expected_2, tags)
@unittest.skipIf(TEST_NETWORK != 'regtest', 'elementsd doesnt yet support PSBT features we need')
@pytest.mark.openchannel('v2')
@pytest.mark.slow_test
def test_channel_lease_falls_behind(node_factory, bitcoind):
'''
If our peer falls too far behind/doesn't send us an update for
their blockheight, the lessor fails the channel
'''
opts = [{'funder-policy': 'match', 'funder-policy-mod': 100,
'lease-fee-base-sat': '100sat', 'lease-fee-basis': 100},
{'funder-policy': 'match', 'funder-policy-mod': 100,
'lease-fee-base-sat': '100sat', 'lease-fee-basis': 100}]
l1, l2, = node_factory.get_nodes(2, opts=opts)
amount = 500000
feerate = 2000
l1.fundwallet(20000000)
l2.fundwallet(20000000)
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
rates = l1.rpc.dev_queryrates(l2.info['id'], amount, amount)
# l1 leases a channel from l2
l1.rpc.fundchannel(l2.info['id'], amount, request_amt=amount,
feerate='{}perkw'.format(feerate),
compact_lease=rates['compact_lease'])
# sink the funding transaction
bitcoind.generate_block(1, wait_for_mempool=1)
# stop l1
l1.stop()
# advance blockchain 1008 blocks, the lessor should drop to chain
bitcoind.generate_block(1008)
sync_blockheight(bitcoind, [l2])
l2.daemon.wait_for_log('Offline peer is too far behind, terminating')
@unittest.skipIf(TEST_NETWORK != 'regtest', 'elementsd doesnt yet support PSBT features we need')
@pytest.mark.openchannel('v2')
@pytest.mark.slow_test
def test_channel_lease_post_expiry(node_factory, bitcoind, chainparams):
coin_mvt_plugin = os.path.join(os.getcwd(), 'tests/plugins/coin_movements.py')
opts = {'funder-policy': 'match', 'funder-policy-mod': 100,
'lease-fee-base-sat': '100sat', 'lease-fee-basis': 100,
'may_reconnect': True, 'plugin': coin_mvt_plugin,
'dev-no-reconnect': None}
l1, l2, = node_factory.get_nodes(2, opts=opts)
feerate = 2000
amount = 500000
l1.fundwallet(20000000)
l2.fundwallet(20000000)
# l1 leases a channel from l2
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
rates = l1.rpc.dev_queryrates(l2.info['id'], amount, amount)
l1.rpc.fundchannel(l2.info['id'], amount, request_amt=amount,
feerate='{}perkw'.format(feerate),
compact_lease=rates['compact_lease'])
est_fees = calc_lease_fee(amount, feerate, rates)
# This should be the accepter's amount
peer = only_one(l1.rpc.listpeers()["peers"])
fundings = only_one(l1.rpc.listpeerchannels(peer["id"])['channels'])['funding']
assert Millisatoshi(amount * 1000) == fundings['remote_funds_msat']
assert Millisatoshi(est_fees + amount * 1000) == fundings['local_funds_msat']
assert Millisatoshi(est_fees) == fundings['fee_paid_msat']
bitcoind.generate_block(6)
l1.daemon.wait_for_log('to CHANNELD_NORMAL')
channel_id = first_channel_id(l1, l2)
wait_for(lambda: [c['active'] for c in l1.rpc.listchannels(l1.get_channel_scid(l2))['channels']] == [True, True])
# send some payments, mine a block or two
inv = l2.rpc.invoice(10**4, '1', 'no_1')
l1.rpc.pay(inv['bolt11'])
# make sure it's completely resolved before we generate blocks,
# otherwise it can close HTLC!
peer = only_one(l2.rpc.listpeers()["peers"])
wait_for(lambda: only_one(l2.rpc.listpeerchannels(peer["id"])['channels'])['htlcs'] == [])
# l2 attempts to close a channel that it leased, should fail
with pytest.raises(RpcError, match=r'Peer leased this channel from us'):
l2.rpc.close(l1.get_channel_scid(l2))
bitcoind.generate_block(6)
sync_blockheight(bitcoind, [l1, l2])
# make sure we're at the right place for the csv lock
l2.daemon.wait_for_log('Blockheight: SENT_ADD_ACK_COMMIT->RCVD_ADD_ACK_REVOCATION LOCAL now 115')
# We need to give l1-l2 time to update their blockheights
for i in range(0, 4000, 1000):
for _ in range(0, 1000, 200):
bitcoind.generate_block(200)
sync_blockheight(bitcoind, [l1, l2])
l1.daemon.wait_for_log('peer_out WIRE_UPDATE_BLOCKHEIGHT')
bitcoind.generate_block(32)
sync_blockheight(bitcoind, [l1, l2])
l1.daemon.wait_for_log('peer_out WIRE_UPDATE_BLOCKHEIGHT')
# l1<->l2 mutual close should work
chan = l1.get_channel_scid(l2)
l2.rpc.connect(l1.info['id'], 'localhost', l1.port)
l1.rpc.close(chan)
l2.daemon.wait_for_log('State changed from CLOSINGD_SIGEXCHANGE to CLOSINGD_COMPLETE')
bitcoind.generate_block(2, wait_for_mempool=1)
sync_blockheight(bitcoind, [l1, l2])
l1.daemon.wait_for_log('Resolved FUNDING_TRANSACTION/FUNDING_OUTPUT by MUTUAL_CLOSE')
l2.daemon.wait_for_log('Resolved FUNDING_TRANSACTION/FUNDING_OUTPUT by MUTUAL_CLOSE')
channel_mvts_1 = [
{'type': 'chain_mvt', 'credit_msat': 506432000, 'debit_msat': 0, 'tags': ['channel_open', 'opener', 'leased']},
{'type': 'channel_mvt', 'credit_msat': 0, 'debit_msat': 6432000, 'tags': ['lease_fee'], 'fees_msat': '0msat'},
{'type': 'channel_mvt', 'credit_msat': 0, 'debit_msat': 10000, 'tags': ['invoice'], 'fees_msat': '0msat'},
{'type': 'chain_mvt', 'credit_msat': 0, 'debit_msat': 499990000, 'tags': ['channel_close']},
]
channel_mvts_2 = [
{'type': 'chain_mvt', 'credit_msat': 500000000, 'debit_msat': 0, 'tags': ['channel_open', 'leased']},
{'type': 'channel_mvt', 'credit_msat': 6432000, 'debit_msat': 0, 'tags': ['lease_fee'], 'fees_msat': '0msat'},
{'type': 'channel_mvt', 'credit_msat': 10000, 'debit_msat': 0, 'tags': ['invoice'], 'fees_msat': '0msat'},
{'type': 'chain_mvt', 'credit_msat': 0, 'debit_msat': 506442000, 'tags': ['channel_close']},
]
check_coin_moves(l1, channel_id, channel_mvts_1, chainparams)
check_coin_moves(l2, channel_id, channel_mvts_2, chainparams)
assert account_balance(l1, channel_id) == 0
assert account_balance(l2, channel_id) == 0
@unittest.skipIf(TEST_NETWORK != 'regtest', 'elementsd doesnt yet support PSBT features we need')
@pytest.mark.openchannel('v2')
@pytest.mark.slow_test
def test_channel_lease_unilat_closes(node_factory, bitcoind):
'''
Check that channel leases work
l1-l2: l1 leases funds from l2; l1 goes to chain unilaterally
l2-l3: l2 leases funds from l3; l3 goes to chain unilaterally
'''
opts = {'funder-policy': 'match', 'funder-policy-mod': 100,
'lease-fee-base-sat': '100sat', 'lease-fee-basis': 100,
'funder-lease-requests-only': False}
l1, l2, l3 = node_factory.get_nodes(3, opts=opts)
# Allow l2 some warnings
l2.allow_warning = True
feerate = 2000
amount = 500000
l1.fundwallet(20000000)
l2.fundwallet(20000000)
l3.fundwallet(20000000)
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
rates = l1.rpc.dev_queryrates(l2.info['id'], amount, amount)
# l1 leases a channel from l2
l1.rpc.fundchannel(l2.info['id'], amount, request_amt=amount,
feerate='{}perkw'.format(feerate),
compact_lease=rates['compact_lease'])
# l2 leases a channel from l3
l2.rpc.connect(l3.info['id'], 'localhost', l3.port)
rates = l2.rpc.dev_queryrates(l3.info['id'], amount, amount)
l2.rpc.fundchannel(l3.info['id'], amount, request_amt=amount,
feerate='{}perkw'.format(feerate), minconf=0,
compact_lease=rates['compact_lease'])
est_fees = calc_lease_fee(amount, feerate, rates)
# This should be the accepter's amount
peer = only_one(l1.rpc.listpeers()["peers"])
fundings = only_one(l1.rpc.listpeerchannels(peer["id"])['channels'])['funding']
assert Millisatoshi(amount * 1000) == Millisatoshi(fundings['remote_funds_msat'])
assert Millisatoshi(est_fees + amount * 1000) == Millisatoshi(fundings['local_funds_msat'])
bitcoind.generate_block(6)
l1.daemon.wait_for_log('to CHANNELD_NORMAL')
l3.daemon.wait_for_log('to CHANNELD_NORMAL')
wait_for(lambda: [c['active'] for c in l1.rpc.listchannels(l1.get_channel_scid(l2))['channels']] == [True, True])
wait_for(lambda: [c['active'] for c in l3.rpc.listchannels(l3.get_channel_scid(l2))['channels']] == [True, True])
# send some payments, mine a block or two
inv = l2.rpc.invoice(10**4, '1', 'no_1')
l1.rpc.pay(inv['bolt11'])
inv = l2.rpc.invoice(10**4, '3', 'no_3')
l3.rpc.pay(inv['bolt11'])
bitcoind.generate_block(2)
sync_blockheight(bitcoind, [l1, l2, l3])
# make sure we're at the right place for the csv lock
l2.daemon.wait_for_log('Blockheight: SENT_ADD_ACK_COMMIT->RCVD_ADD_ACK_REVOCATION LOCAL now 110')
l2.stop()
# unilateral close channels l1<->l2 & l3<->l2
l1.rpc.close(l2.info['id'], 1)
l3.rpc.close(l2.info['id'], 1, force_lease_closed=True)
# Wait til to_self_delay expires, l1 should claim to_local back
bitcoind.generate_block(1, wait_for_mempool=2)
_, txid, blocks = l1.wait_for_onchaind_tx('OUR_DELAYED_RETURN_TO_WALLET',
'OUR_UNILATERAL/DELAYED_OUTPUT_TO_US')
assert blocks == 4
bitcoind.generate_block(blocks)
l1.mine_txid_or_rbf(txid, numblocks=1)
l1.daemon.wait_for_log('Resolved OUR_UNILATERAL/DELAYED_OUTPUT_TO_US by our proposal OUR_DELAYED_RETURN_TO_WALLET')
assert len(l1.rpc.listfunds()['outputs']) == 2
l2.start()
search_start = l2.daemon.logsearch_start
log = l2.daemon.wait_for_log('adding utxo to watch .* csv 40.*')
utxo1 = re.match('.* adding utxo to watch (.*), csv .*', log).group(1)
l2.daemon.logsearch_start = search_start
log = l2.daemon.wait_for_log('adding utxo to watch .* csv 1')
utxo3 = re.match('.* adding utxo to watch (.*), csv 1', log).group(1)
# we *shouldn't* be able to spend it, there's a lock on it
with pytest.raises(RpcError, match='UTXO .* is csv locked'):
l2.rpc.withdraw(l2.rpc.newaddr()['bech32'], "all", utxos=[utxo1])
# we *can* spend the 1csv lock one
l2.rpc.withdraw(l2.rpc.newaddr()['bech32'], "all", utxos=[utxo3])