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lightning/tests/test_gossip.py

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from fixtures import * # noqa: F401,F403
from lightning import RpcError
from utils import wait_for, TIMEOUT, only_one, sync_blockheight
import json
import logging
import os
import pytest
import struct
import subprocess
import time
import unittest
with open('config.vars') as configfile:
config = dict([(line.rstrip().split('=', 1)) for line in configfile])
DEVELOPER = os.getenv("DEVELOPER", config['DEVELOPER']) == "1"
@unittest.skipIf(not DEVELOPER, "needs --dev-fast-gossip-prune")
def test_gossip_pruning(node_factory, bitcoind):
""" Create channel and see it being updated in time before pruning
"""
l1, l2, l3 = node_factory.get_nodes(3, opts={'dev-fast-gossip-prune': None})
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
l2.rpc.connect(l3.info['id'], 'localhost', l3.port)
scid1 = l1.fund_channel(l2, 10**6)
scid2 = l2.fund_channel(l3, 10**6)
bitcoind.generate_block(6)
# Channels should be activated locally
wait_for(lambda: [c['active'] for c in l1.rpc.listchannels()['channels']] == [True] * 4)
wait_for(lambda: [c['active'] for c in l2.rpc.listchannels()['channels']] == [True] * 4)
wait_for(lambda: [c['active'] for c in l3.rpc.listchannels()['channels']] == [True] * 4)
# All of them should send a keepalive message (after 30 seconds)
l1.daemon.wait_for_logs([
'Sending keepalive channel_update for {}'.format(scid1),
], timeout=50)
l2.daemon.wait_for_logs([
'Sending keepalive channel_update for {}'.format(scid1),
'Sending keepalive channel_update for {}'.format(scid2),
])
l3.daemon.wait_for_logs([
'Sending keepalive channel_update for {}'.format(scid2),
])
# Now kill l2, so that l1 and l3 will prune from their view after 60 seconds
l2.stop()
# We check every 60/4 seconds, and takes 60 seconds since last update.
l1.daemon.wait_for_log("Pruning channel {} from network view".format(scid2),
timeout=80)
l3.daemon.wait_for_log("Pruning channel {} from network view".format(scid1))
assert scid2 not in [c['short_channel_id'] for c in l1.rpc.listchannels()['channels']]
assert scid1 not in [c['short_channel_id'] for c in l3.rpc.listchannels()['channels']]
assert l3.info['id'] not in [n['nodeid'] for n in l1.rpc.listnodes()['nodes']]
assert l1.info['id'] not in [n['nodeid'] for n in l3.rpc.listnodes()['nodes']]
@unittest.skipIf(not DEVELOPER, "needs --dev-fast-gossip, --dev-no-reconnect")
def test_gossip_disable_channels(node_factory, bitcoind):
"""Simple test to check that channels get disabled correctly on disconnect and
reenabled upon reconnecting
"""
opts = {'dev-no-reconnect': None, 'may_reconnect': True}
l1, l2 = node_factory.get_nodes(2, opts=opts)
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
scid = l1.fund_channel(l2, 10**6)
bitcoind.generate_block(5)
def count_active(node):
chans = node.rpc.listchannels()['channels']
active = [c for c in chans if c['active']]
return len(active)
l1.wait_channel_active(scid)
l2.wait_channel_active(scid)
assert(count_active(l1) == 2)
assert(count_active(l2) == 2)
l2.restart()
wait_for(lambda: count_active(l1) == 0)
assert(count_active(l2) == 0)
# Now reconnect, they should re-enable the channels
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
wait_for(lambda: count_active(l1) == 2)
wait_for(lambda: count_active(l2) == 2)
@unittest.skipIf(not DEVELOPER, "needs --dev-allow-localhost")
def test_announce_address(node_factory, bitcoind):
"""Make sure our announcements are well formed."""
# We do not allow announcement of duplicates.
opts = {'announce-addr':
['4acth47i6kxnvkewtm6q7ib2s3ufpo5sqbsnzjpbi7utijcltosqemad.onion',
'silkroad6ownowfk.onion',
'1.2.3.4:1234',
'::'],
'log-level': 'io',
'dev-allow-localhost': None}
l1, l2 = node_factory.get_nodes(2, opts=[opts, {}])
# It should warn about the collision between --addr=127.0.0.1:<ephem>
# and --announce-addr=1.2.3.4:1234 (may happen before get_nodes returns).
wait_for(lambda: l1.daemon.is_in_log('Cannot announce address 127.0.0.1:[0-9]*, already announcing 1.2.3.4:1234'))
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
scid = l1.fund_channel(l2, 10**6)
bitcoind.generate_block(5)
# Activate IO logging for l1.
subprocess.run(['kill', '-USR1', l1.subd_pid('channeld')])
l1.wait_channel_active(scid)
l2.wait_channel_active(scid)
# We should see it send node announce (257 = 0x0101)
l1.daemon.wait_for_log(r"\[OUT\] 0101.*004d010102030404d202000000000000000000000000000000002607039216a8b803f3acd758aa260704e00533f3e8f2aedaa8969b3d0fa03a96e857bbb28064dca5e147e934244b9ba50230032607'")
@unittest.skipIf(not DEVELOPER, "needs DEVELOPER=1")
def test_gossip_timestamp_filter(node_factory, bitcoind):
# Need full IO logging so we can see gossip (from gossipd and channeld)
l1, l2, l3 = node_factory.line_graph(3, opts={'log-level': 'io'}, fundchannel=False)
# Full IO logging for connectds
subprocess.run(['kill', '-USR1', l1.subd_pid('connectd')])
subprocess.run(['kill', '-USR1', l2.subd_pid('connectd')])
# Updates get backdated 300 seconds.
before_anything = int(time.time() - 301.0)
# Make a public channel.
chan12 = l1.fund_channel(l2, 10**5)
bitcoind.generate_block(5)
l3.wait_for_channel_updates([chan12])
after_12 = int(time.time())
# Full IO logging for l1's channeld
subprocess.run(['kill', '-USR1', l1.subd_pid('channeld')])
# Make another one, different timestamp.
chan23 = l2.fund_channel(l3, 10**5)
bitcoind.generate_block(5)
l1.wait_for_channel_updates([chan23])
after_23 = int(time.time())
# Make sure l1 has received all the gossip.
wait_for(lambda: ['alias' in node for node in l1.rpc.listnodes()['nodes']] == [True, True, True])
# l1 sets broad timestamp, will receive info about both channels again.
l1.rpc.dev_send_timestamp_filter(id=l2.info['id'],
first=0,
range=0xFFFFFFFF)
before_sendfilter = l1.daemon.logsearch_start
# 0x0100 = channel_announcement
# 0x0102 = channel_update
# 0x0101 = node_announcement
# The order of node_announcements relative to others is undefined.
l1.daemon.wait_for_logs([r'\[IN\] 0102',
r'\[IN\] 0102',
r'\[IN\] 0100',
r'\[IN\] 0100',
r'\[IN\] 0102',
r'\[IN\] 0102',
r'\[IN\] 0101',
r'\[IN\] 0101',
r'\[IN\] 0101'])
# Now timestamp which doesn't overlap (gives nothing).
before_sendfilter = l1.daemon.logsearch_start
l1.rpc.dev_send_timestamp_filter(id=l2.info['id'],
first=0,
range=before_anything)
time.sleep(1)
assert not l1.daemon.is_in_log(r'\[IN\] 0100', before_sendfilter)
# Now choose range which will only give first update.
l1.rpc.dev_send_timestamp_filter(id=l2.info['id'],
first=before_anything,
range=after_12 - before_anything + 1)
# 0x0100 = channel_announcement
l1.daemon.wait_for_log(r'\[IN\] 0100')
# 0x0102 = channel_update
# (Node announcement may have any timestamp)
l1.daemon.wait_for_log(r'\[IN\] 0102')
l1.daemon.wait_for_log(r'\[IN\] 0102')
# Now choose range which will only give second update.
l1.rpc.dev_send_timestamp_filter(id=l2.info['id'],
first=after_12,
range=after_23 - after_12 + 1)
# 0x0100 = channel_announcement
l1.daemon.wait_for_log(r'\[IN\] 0100')
# 0x0102 = channel_update
# (Node announcement may have any timestamp)
l1.daemon.wait_for_log(r'\[IN\] 0102')
l1.daemon.wait_for_log(r'\[IN\] 0102')
@unittest.skipIf(not DEVELOPER, "needs --dev-allow-localhost")
def test_connect_by_gossip(node_factory, bitcoind):
"""Test connecting to an unknown peer using node gossip
"""
# l1 announces a bogus addresses.
l1, l2, l3 = node_factory.get_nodes(3,
opts=[{'announce-addr':
['127.0.0.1:2',
'[::]:2',
'3fyb44wdhnd2ghhl.onion',
'vww6ybal4bd7szmgncyruucpgfkqahzddi37ktceo3ah7ngmcopnpyyd.onion'],
'dev-allow-localhost': None},
{},
{'dev-allow-localhost': None,
'log-level': 'io'}])
l2.rpc.connect(l3.info['id'], 'localhost', l3.port)
# Nodes are gossiped only if they have channels
chanid = l2.fund_channel(l3, 10**6)
bitcoind.generate_block(5)
# Let channel reach announcement depth
l2.wait_channel_active(chanid)
# Make sure l3 has given node announcement to l2.
l2.daemon.wait_for_logs(['Received node_announcement for node {}'.format(l3.info['id'])])
# Let l1 learn of l3 by node gossip
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
l1.daemon.wait_for_logs(['Received node_announcement for node {}'.format(l3.info['id'])])
# Have l1 connect to l3 without explicit host and port.
l1.rpc.connect(l3.info['id'])
@unittest.skipIf(not DEVELOPER, "DEVELOPER=1 needed to speed up gossip propagation, would be too long otherwise")
def test_gossip_jsonrpc(node_factory):
l1, l2 = node_factory.line_graph(2, fundchannel=True, wait_for_announce=False)
# Shouldn't send announce signatures until 6 deep.
assert not l1.daemon.is_in_log('peer_out WIRE_ANNOUNCEMENT_SIGNATURES')
# Channels should be activated locally
wait_for(lambda: len(l1.rpc.listchannels()['channels']) == 2)
wait_for(lambda: len(l2.rpc.listchannels()['channels']) == 2)
# Make sure we can route through the channel, will raise on failure
l1.rpc.getroute(l2.info['id'], 100, 1)
# Outgoing should be active, but not public.
channels1 = l1.rpc.listchannels()['channels']
channels2 = l2.rpc.listchannels()['channels']
assert [c['active'] for c in channels1] == [True, True]
assert [c['active'] for c in channels2] == [True, True]
# The incoming direction will be considered public, hence check for out
# outgoing only
assert len([c for c in channels1 if not c['public']]) == 2
assert len([c for c in channels2 if not c['public']]) == 2
# Test listchannels-by-source
channels1 = l1.rpc.listchannels(source=l1.info['id'])['channels']
channels2 = l2.rpc.listchannels(source=l1.info['id'])['channels']
assert only_one(channels1)['source'] == l1.info['id']
assert only_one(channels1)['destination'] == l2.info['id']
assert channels1 == channels2
l2.rpc.listchannels()['channels']
# Now proceed to funding-depth and do a full gossip round
l1.bitcoin.generate_block(5)
# Could happen in either order.
l1.daemon.wait_for_logs(['peer_out WIRE_ANNOUNCEMENT_SIGNATURES',
'peer_in WIRE_ANNOUNCEMENT_SIGNATURES'])
# Just wait for the update to kick off and then check the effect
needle = "Received node_announcement for node"
l1.daemon.wait_for_log(needle)
l2.daemon.wait_for_log(needle)
# Need to increase timeout, intervals cannot be shortened with DEVELOPER=0
wait_for(lambda: len(l1.getactivechannels()) == 2, timeout=60)
wait_for(lambda: len(l2.getactivechannels()) == 2, timeout=60)
nodes = l1.rpc.listnodes()['nodes']
assert set([n['nodeid'] for n in nodes]) == set([l1.info['id'], l2.info['id']])
# Test listnodes with an arg, while we're here.
n1 = l1.rpc.listnodes(l1.info['id'])['nodes'][0]
n2 = l1.rpc.listnodes(l2.info['id'])['nodes'][0]
assert n1['nodeid'] == l1.info['id']
assert n2['nodeid'] == l2.info['id']
# Might not have seen other node-announce yet.
assert n1['alias'].startswith('JUNIORBEAM')
assert n1['color'] == '0266e4'
if 'alias' not in n2:
assert 'color' not in n2
assert 'addresses' not in n2
else:
assert n2['alias'].startswith('SILENTARTIST')
assert n2['color'] == '022d22'
assert [c['active'] for c in l1.rpc.listchannels()['channels']] == [True, True]
assert [c['public'] for c in l1.rpc.listchannels()['channels']] == [True, True]
assert [c['active'] for c in l2.rpc.listchannels()['channels']] == [True, True]
assert [c['public'] for c in l2.rpc.listchannels()['channels']] == [True, True]
@unittest.skipIf(not DEVELOPER, "Too slow without --dev-fast-gossip")
def test_gossip_badsig(node_factory):
"""Make sure node announcement signatures are ok.
This is a smoke test to see if signatures fail. This used to be the case
occasionally before PR #276 was merged: we'd be waiting for the HSM to reply
with a signature and would then regenerate the message, which might roll the
timestamp, invalidating the signature.
"""
l1, l2, l3 = node_factory.get_nodes(3)
# l2 connects to both, so l1 can't reconnect and thus l2 drops to chain
l2.rpc.connect(l1.info['id'], 'localhost', l1.port)
l2.rpc.connect(l3.info['id'], 'localhost', l3.port)
l2.fund_channel(l1, 10**6)
l2.fund_channel(l3, 10**6)
# Wait for route propagation.
l1.bitcoin.generate_block(5)
l1.daemon.wait_for_log('Received node_announcement for node {}'
.format(l3.info['id']))
assert not l1.daemon.is_in_log('signature verification failed')
assert not l2.daemon.is_in_log('signature verification failed')
assert not l3.daemon.is_in_log('signature verification failed')
def test_gossip_weirdalias(node_factory, bitcoind):
weird_name = '\t \n \" \n \r \n \\'
normal_name = 'Normal name'
opts = [
{'alias': weird_name},
{'alias': normal_name}
]
l1, l2 = node_factory.get_nodes(2, opts=opts)
weird_name_json = json.encoder.JSONEncoder().encode(weird_name)[1:-1].replace('\\', '\\\\')
aliasline = l1.daemon.is_in_log('Server started with public key .* alias')
assert weird_name_json in str(aliasline)
assert l2.daemon.is_in_log('Server started with public key .* alias {}'
.format(normal_name))
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
l2.daemon.wait_for_log('openingd-{} chan #1: Handed peer, entering loop'.format(l1.info['id']))
l2.fund_channel(l1, 10**6)
bitcoind.generate_block(6)
# They should gossip together.
l1.daemon.wait_for_log('Received node_announcement for node {}'
.format(l2.info['id']))
l2.daemon.wait_for_log('Received node_announcement for node {}'
.format(l1.info['id']))
node = l1.rpc.listnodes(l1.info['id'])['nodes'][0]
assert node['alias'] == weird_name
node = l2.rpc.listnodes(l1.info['id'])['nodes'][0]
assert node['alias'] == weird_name
@unittest.skipIf(not DEVELOPER, "needs DEVELOPER=1 for --dev-no-reconnect")
def test_gossip_persistence(node_factory, bitcoind):
"""Gossip for a while, restart and it should remember.
Also tests for funding outpoint spends, and they should be persisted
too.
"""
opts = {'dev-no-reconnect': None, 'may_reconnect': True}
l1, l2, l3, l4 = node_factory.get_nodes(4, opts=opts)
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
l2.rpc.connect(l3.info['id'], 'localhost', l3.port)
l3.rpc.connect(l4.info['id'], 'localhost', l4.port)
scid12 = l1.fund_channel(l2, 10**6)
scid23 = l2.fund_channel(l3, 10**6)
# Make channels public, except for l3 -> l4, which is kept local-only for now
bitcoind.generate_block(5)
scid34 = l3.fund_channel(l4, 10**6)
bitcoind.generate_block(1)
def active(node):
chans = node.rpc.listchannels()['channels']
return sorted([c['short_channel_id'] for c in chans if c['active']])
def non_public(node):
chans = node.rpc.listchannels()['channels']
return sorted([c['short_channel_id'] for c in chans if not c['public']])
# Channels should be activated
wait_for(lambda: active(l1) == [scid12, scid12, scid23, scid23])
wait_for(lambda: active(l2) == [scid12, scid12, scid23, scid23])
# This one sees its private channel
wait_for(lambda: active(l3) == [scid12, scid12, scid23, scid23, scid34, scid34])
# l1 restarts and doesn't connect, but loads from persisted store, all
# local channels should be disabled, leaving only the two l2 <-> l3
# directions
l1.restart()
wait_for(lambda: active(l1) == [scid23, scid23])
# Now reconnect, they should re-enable the two l1 <-> l2 directions
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
wait_for(lambda: active(l1) == [scid12, scid12, scid23, scid23])
# Now spend the funding tx, generate a block and see others deleting the
# channel from their network view
l1.rpc.dev_fail(l2.info['id'])
time.sleep(1)
bitcoind.generate_block(1)
wait_for(lambda: active(l1) == [scid23, scid23])
wait_for(lambda: active(l2) == [scid23, scid23])
wait_for(lambda: active(l3) == [scid23, scid23, scid34, scid34])
# The channel l3 -> l4 should be known only to them
assert non_public(l1) == []
assert non_public(l2) == []
wait_for(lambda: non_public(l3) == [scid34, scid34])
wait_for(lambda: non_public(l4) == [scid34, scid34])
# Finally, it should also remember the deletion after a restart
l3.restart()
l4.restart()
l2.rpc.connect(l3.info['id'], 'localhost', l3.port)
l3.rpc.connect(l4.info['id'], 'localhost', l4.port)
wait_for(lambda: active(l3) == [scid23, scid23, scid34, scid34])
# Both l3 and l4 should remember their local-only channel
wait_for(lambda: non_public(l3) == [scid34, scid34])
wait_for(lambda: non_public(l4) == [scid34, scid34])
@unittest.skipIf(not DEVELOPER, "needs DEVELOPER=1")
def test_routing_gossip_reconnect(node_factory):
# Connect two peers, reconnect and then see if we resume the
# gossip.
disconnects = ['-WIRE_CHANNEL_ANNOUNCEMENT']
l1 = node_factory.get_node(disconnect=disconnects,
may_reconnect=True)
l2 = node_factory.get_node(may_reconnect=True)
l3 = node_factory.get_node()
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
l1.openchannel(l2, 20000)
# Now open new channels and everybody should sync
l2.rpc.connect(l3.info['id'], 'localhost', l3.port)
l2.openchannel(l3, 20000)
# Settle the gossip
for n in [l1, l2, l3]:
wait_for(lambda: len(n.rpc.listchannels()['channels']) == 4)
@unittest.skipIf(not DEVELOPER, "needs DEVELOPER=1")
def test_gossip_no_empty_announcements(node_factory, bitcoind):
# Need full IO logging so we can see gossip
opts = {'log-level': 'io'}
l1, l2 = node_factory.get_nodes(2, opts=opts)
# l3 sends CHANNEL_ANNOUNCEMENT to l2, but not CHANNEL_UDPATE.
l3 = node_factory.get_node(disconnect=['+WIRE_CHANNEL_ANNOUNCEMENT'],
options={'dev-no-reconnect': None},
may_reconnect=True)
l4 = node_factory.get_node(may_reconnect=True)
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
l2.rpc.connect(l3.info['id'], 'localhost', l3.port)
l3.rpc.connect(l4.info['id'], 'localhost', l4.port)
# Turn on IO logging for openingd (make sure it's ready!)
l1.daemon.wait_for_log('openingd-.*: Handed peer, entering loop')
subprocess.run(['kill', '-USR1', l1.subd_pid('openingd')])
l2.daemon.wait_for_log('openingd-{}.*: Handed peer, entering loop'.format(l3.info['id']))
subprocess.run(['kill', '-USR1', l2.subd_pid('openingd-{}'.format(l3.info['id']))])
# Make an announced-but-not-updated channel.
l3.fund_channel(l4, 10**5)
bitcoind.generate_block(5)
# 0x0100 = channel_announcement, which goes to l2 before l3 dies.
l2.daemon.wait_for_log(r'\[IN\] 0100')
# But it never goes to l1, as there's no channel_update.
time.sleep(2)
assert not l1.daemon.is_in_log(r'\[IN\] 0100')
assert len(l1.rpc.listchannels()['channels']) == 0
# If we reconnect, gossip will now flow.
l3.rpc.connect(l2.info['id'], 'localhost', l2.port)
wait_for(lambda: len(l1.rpc.listchannels()['channels']) == 2)
@unittest.skipIf(not DEVELOPER, "Too slow without --dev-fast-gossip")
def test_routing_gossip(node_factory, bitcoind):
nodes = node_factory.get_nodes(5)
for i in range(len(nodes) - 1):
src, dst = nodes[i], nodes[i + 1]
src.rpc.connect(dst.info['id'], 'localhost', dst.port)
src.openchannel(dst, 20000)
# Allow announce messages.
bitcoind.generate_block(5)
# Deep check that all channels are in there
comb = []
for i in range(len(nodes) - 1):
comb.append((nodes[i].info['id'], nodes[i + 1].info['id']))
comb.append((nodes[i + 1].info['id'], nodes[i].info['id']))
def check_gossip(n):
seen = []
channels = n.rpc.listchannels()['channels']
for c in channels:
seen.append((c['source'], c['destination']))
missing = set(comb) - set(seen)
logging.debug("Node {id} is missing channels {chans}".format(
id=n.info['id'],
chans=missing)
)
return len(missing) == 0
for n in nodes:
wait_for(lambda: check_gossip(n))
@unittest.skipIf(not DEVELOPER, "needs DEVELOPER=1")
def test_gossip_query_channel_range(node_factory, bitcoind):
l1, l2, l3, l4 = node_factory.line_graph(4, opts={'log-level': 'io'},
fundchannel=False)
# Make public channels on consecutive blocks
l1.fundwallet(10**6)
l2.fundwallet(10**6)
num_tx = len(bitcoind.rpc.getrawmempool())
l1.rpc.fundchannel(l2.info['id'], 10**5)['tx']
wait_for(lambda: len(bitcoind.rpc.getrawmempool()) == num_tx + 1)
bitcoind.generate_block(1)
num_tx = len(bitcoind.rpc.getrawmempool())
l2.rpc.fundchannel(l3.info['id'], 10**5)['tx']
wait_for(lambda: len(bitcoind.rpc.getrawmempool()) == num_tx + 1)
bitcoind.generate_block(1)
# Get them both to gossip depth.
bitcoind.generate_block(5)
# Make sure l2 has received all the gossip.
l2.daemon.wait_for_logs(['Received node_announcement for node ' + l1.info['id'],
'Received node_announcement for node ' + l3.info['id']])
scid12 = only_one(l1.rpc.listpeers(l2.info['id'])['peers'])['channels'][0]['short_channel_id']
scid23 = only_one(l3.rpc.listpeers(l2.info['id'])['peers'])['channels'][0]['short_channel_id']
block12 = int(scid12.split('x')[0])
block23 = int(scid23.split('x')[0])
assert block23 == block12 + 1
# l1 asks for all channels, gets both.
ret = l1.rpc.dev_query_channel_range(id=l2.info['id'],
first=0,
num=1000000)
assert ret['final_first_block'] == 0
assert ret['final_num_blocks'] == 1000000
assert ret['final_complete']
assert len(ret['short_channel_ids']) == 2
assert ret['short_channel_ids'][0] == scid12
assert ret['short_channel_ids'][1] == scid23
# Does not include scid12
ret = l1.rpc.dev_query_channel_range(id=l2.info['id'],
first=0,
num=block12)
assert ret['final_first_block'] == 0
assert ret['final_num_blocks'] == block12
assert ret['final_complete']
assert len(ret['short_channel_ids']) == 0
# Does include scid12
ret = l1.rpc.dev_query_channel_range(id=l2.info['id'],
first=0,
num=block12 + 1)
assert ret['final_first_block'] == 0
assert ret['final_num_blocks'] == block12 + 1
assert ret['final_complete']
assert len(ret['short_channel_ids']) == 1
assert ret['short_channel_ids'][0] == scid12
# Doesn't include scid23
ret = l1.rpc.dev_query_channel_range(id=l2.info['id'],
first=0,
num=block23)
assert ret['final_first_block'] == 0
assert ret['final_num_blocks'] == block23
assert ret['final_complete']
assert len(ret['short_channel_ids']) == 1
assert ret['short_channel_ids'][0] == scid12
# Does include scid23
ret = l1.rpc.dev_query_channel_range(id=l2.info['id'],
first=block12,
num=block23 - block12 + 1)
assert ret['final_first_block'] == block12
assert ret['final_num_blocks'] == block23 - block12 + 1
assert ret['final_complete']
assert len(ret['short_channel_ids']) == 2
assert ret['short_channel_ids'][0] == scid12
assert ret['short_channel_ids'][1] == scid23
# Only includes scid23
ret = l1.rpc.dev_query_channel_range(id=l2.info['id'],
first=block23,
num=1)
assert ret['final_first_block'] == block23
assert ret['final_num_blocks'] == 1
assert ret['final_complete']
assert len(ret['short_channel_ids']) == 1
assert ret['short_channel_ids'][0] == scid23
# Past both
ret = l1.rpc.dev_query_channel_range(id=l2.info['id'],
first=block23 + 1,
num=1000000)
assert ret['final_first_block'] == block23 + 1
assert ret['final_num_blocks'] == 1000000
assert ret['final_complete']
assert len(ret['short_channel_ids']) == 0
# Turn on IO logging in l1 channeld.
subprocess.run(['kill', '-USR1', l1.subd_pid('channeld')])
# Make l2 split reply into two (technically async)
l2.rpc.dev_set_max_scids_encode_size(max=9)
l2.daemon.wait_for_log('Set max_scids_encode_bytes to 9')
ret = l1.rpc.dev_query_channel_range(id=l2.info['id'],
first=0,
num=1000000)
# Turns out it sends: 0+53, 53+26, 79+13, 92+7, 99+3, 102+2, 104+1, 105+999895
l1.daemon.wait_for_logs([r'\[IN\] 0108'] * 8)
# It should definitely have split
assert ret['final_first_block'] != 0 or ret['final_num_blocks'] != 1000000
assert ret['final_complete']
assert len(ret['short_channel_ids']) == 2
assert ret['short_channel_ids'][0] == scid12
assert ret['short_channel_ids'][1] == scid23
l2.daemon.wait_for_log('queue_channel_ranges full: splitting')
# Test overflow case doesn't split forever; should still only get 8 for this
ret = l1.rpc.dev_query_channel_range(id=l2.info['id'],
first=1,
num=429496000)
l1.daemon.wait_for_logs([r'\[IN\] 0108'] * 8)
# And no more!
time.sleep(1)
assert not l1.daemon.is_in_log(r'\[IN\] 0108', start=l1.daemon.logsearch_start)
# This should actually be large enough for zlib to kick in!
l3.fund_channel(l4, 10**5)
bitcoind.generate_block(5)
l2.daemon.wait_for_log('Received node_announcement for node ' + l4.info['id'])
# Restore infinite encode size.
l2.rpc.dev_set_max_scids_encode_size(max=(2**32 - 1))
l2.daemon.wait_for_log('Set max_scids_encode_bytes to {}'
.format(2**32 - 1))
ret = l1.rpc.dev_query_channel_range(id=l2.info['id'],
first=0,
num=65535)
l1.daemon.wait_for_log(
# WIRE_REPLY_CHANNEL_RANGE
r'\[IN\] 0108'
# chain_hash
+ '................................................................'
# first_blocknum
+ '00000000'
# number_of_blocks
+ '0000ffff'
# complete
+ '01'
# length
+ '....'
# encoding
+ '01'
)
# Long test involving 4 lightningd instances.
@unittest.skipIf(not DEVELOPER, "needs DEVELOPER=1")
def test_report_routing_failure(node_factory, bitcoind):
"""Test routing failure and retrying of routing.
"""
# The setup is as follows:
# l3-->l4
# ^ / |
# | / |
# | L v
# l2<--l1
#
# l1 wants to pay to l4.
# The shortest route is l1-l4, but l1 cannot
# afford to pay to l1 because l4 has all the
# funds.
# This is a local failure.
# The next shortest route is l1-l2-l4, but
# l2 cannot afford to pay l4 for same reason.
# This is a remote failure.
# Finally the only possible path is
# l1-l2-l3-l4.
def fund_from_to_payer(lsrc, ldst, lpayer):
lsrc.rpc.connect(ldst.info['id'], 'localhost', ldst.port)
c = lsrc.fund_channel(ldst, 10000000)
bitcoind.generate_block(5)
lpayer.wait_for_channel_updates([c])
# Setup
# Construct lightningd
l1, l2, l3, l4 = node_factory.get_nodes(4)
# Wire them up
# The ordering below matters!
# Particularly, l1 is payer and we will
# wait for l1 to receive gossip for the
# channel being made.
channels = []
for src, dst in [(l1, l2), (l2, l3), (l3, l4), (l4, l1), (l4, l2)]:
src.rpc.connect(dst.info['id'], 'localhost', dst.port)
channels.append(src.fund_channel(dst, 10**6))
bitcoind.generate_block(5)
for c in channels:
l1.wait_channel_active(c)
# Test
inv = l4.rpc.invoice(1234567, 'inv', 'for testing')['bolt11']
l1.rpc.pay(inv)
@unittest.skipIf(not DEVELOPER, "needs DEVELOPER=1")
def test_query_short_channel_id(node_factory, bitcoind):
l1 = node_factory.get_node(options={'log-level': 'io'})
l2 = node_factory.get_node()
l3 = node_factory.get_node()
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
l2.rpc.connect(l3.info['id'], 'localhost', l3.port)
# Need full IO logging so we can see gossip (from openingd and channeld)
l1.daemon.wait_for_log('openingd-.*: Handed peer, entering loop')
subprocess.run(['kill', '-USR1', l1.subd_pid('openingd')])
# Empty result tests.
reply = l1.rpc.dev_query_scids(l2.info['id'], ['1x1x1', '2x2x2'])
# 0x0105 = query_short_channel_ids
l1.daemon.wait_for_log(r'\[OUT\] 0105.*0000000100000100010000020000020002')
assert reply['complete']
# Make channels public.
scid12 = l1.fund_channel(l2, 10**5)
scid23 = l2.fund_channel(l3, 10**5)
bitcoind.generate_block(5)
# It will know about everything.
l1.daemon.wait_for_log('Received node_announcement for node {}'.format(l3.info['id']))
subprocess.run(['kill', '-USR1', l1.subd_pid('channeld')])
# This query should get channel announcements, channel updates, and node announcements.
reply = l1.rpc.dev_query_scids(l2.info['id'], [scid23])
# 0x0105 = query_short_channel_ids
l1.daemon.wait_for_log(r'\[OUT\] 0105')
assert reply['complete']
# 0x0100 = channel_announcement
l1.daemon.wait_for_log(r'\[IN\] 0100')
# 0x0102 = channel_update
l1.daemon.wait_for_log(r'\[IN\] 0102')
l1.daemon.wait_for_log(r'\[IN\] 0102')
# 0x0101 = node_announcement
l1.daemon.wait_for_log(r'\[IN\] 0101')
l1.daemon.wait_for_log(r'\[IN\] 0101')
reply = l1.rpc.dev_query_scids(l2.info['id'], [scid12, scid23])
assert reply['complete']
# Technically, this order could be different, but this matches code.
# 0x0100 = channel_announcement
l1.daemon.wait_for_log(r'\[IN\] 0100')
# 0x0102 = channel_update
l1.daemon.wait_for_log(r'\[IN\] 0102')
l1.daemon.wait_for_log(r'\[IN\] 0102')
# 0x0100 = channel_announcement
l1.daemon.wait_for_log(r'\[IN\] 0100')
# 0x0102 = channel_update
l1.daemon.wait_for_log(r'\[IN\] 0102')
l1.daemon.wait_for_log(r'\[IN\] 0102')
# 0x0101 = node_announcement
l1.daemon.wait_for_log(r'\[IN\] 0101')
l1.daemon.wait_for_log(r'\[IN\] 0101')
def test_gossip_addresses(node_factory, bitcoind):
l1 = node_factory.get_node(options={'announce-addr': [
'[::]:3',
'127.0.0.1:2',
'vww6ybal4bd7szmgncyruucpgfkqahzddi37ktceo3ah7ngmcopnpyyd.onion',
'3fyb44wdhnd2ghhl.onion:1234'
]})
l2 = node_factory.get_node()
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
l1.fund_channel(l2, 100000)
bitcoind.generate_block(6)
l2.daemon.wait_for_log('Received node_announcement for node {}'
.format(l1.info['id']))
nodes = l2.rpc.listnodes(l1.info['id'])['nodes']
assert len(nodes) == 1 and nodes[0]['addresses'] == [
{'type': 'ipv4', 'address': '127.0.0.1', 'port': 2},
{'type': 'ipv6', 'address': '::', 'port': 3},
{'type': 'torv2', 'address': '3fyb44wdhnd2ghhl.onion', 'port': 1234},
{'type': 'torv3', 'address': 'vww6ybal4bd7szmgncyruucpgfkqahzddi37ktceo3ah7ngmcopnpyyd.onion', 'port': 9735}
]
def test_gossip_store_load(node_factory):
"""Make sure we can read canned gossip store"""
l1 = node_factory.get_node(start=False)
with open(os.path.join(l1.daemon.lightning_dir, 'gossip_store'), 'wb') as f:
f.write(bytearray.fromhex("07" # GOSSIP_STORE_VERSION
"000001b0" # len
"fea676e8" # csum
"5b8d9b44" # timestamp
"0100" # WIRE_CHANNEL_ANNOUNCEMENT
"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"
"0000000a" # len
"99dc98b4" # csum
"00000000" # timestamp
"1005" # WIRE_GOSSIP_STORE_CHANNEL_AMOUNT
"0000000001000000"
"00000082" # len
"fd421aeb" # csum
"5b8d9b44" # timestamp
"0102" # WIRE_CHANNEL_UPDATE
"1ea7c2eadf8a29eb8690511a519b5656e29aa0a853771c4e38e65c5abf43d907295a915e69e451f4c7a0c3dc13dd943cfbe3ae88c0b96667cd7d58955dbfedcf43497fd7f826957108f4a30fd9cec3aeba79972084e90ead01ea33090000000013a63c0000b500015b8d9b440000009000000000000003e8000003e800000001"
"00000095" # len
"f036515e" # csum
"5aab817c" # timestamp
"0101" # WIRE_NODE_ANNOUNCEMENT
"cf5d870bc7ecabcb7cd16898ef66891e5f0c6c5851bd85b670f03d325bc44d7544d367cd852e18ec03f7f4ff369b06860a3b12b07b29f36fb318ca11348bf8ec00005aab817c03f113414ebdc6c1fb0f33c99cd5a1d09dd79e7fdf2468cf1fe1af6674361695d23974b250757a7a6c6549544300000000000000000000000000000000000000000000000007010566933e2607"))
l1.start()
# May preceed the Started msg waited for in 'start'.
wait_for(lambda: l1.daemon.is_in_log(r'gossip_store: Read 1/1/1/0 cannounce/cupdate/nannounce/cdelete from store \(0 deleted\) in 770 bytes'))
assert not l1.daemon.is_in_log('gossip_store.*truncating')
def test_gossip_store_load_announce_before_update(node_factory):
"""Make sure we can read canned gossip store with node_announce before update. This happens when a channel_update gets replaced, leaving node_announce before it"""
l1 = node_factory.get_node(start=False)
with open(os.path.join(l1.daemon.lightning_dir, 'gossip_store'), 'wb') as f:
f.write(bytearray.fromhex("07" # GOSSIP_STORE_VERSION
"000001b0" # len
"fea676e8" # csum
"5b8d9b44" # timestamp
"0100" # WIRE_CHANNEL_ANNOUNCEMENT
"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"
"0000000a" # len
"99dc98b4" # csum
"00000000" # timestamp
"1005" # WIRE_GOSSIP_STORE_CHANNEL_AMOUNT
"0000000001000000"
"80000082" # len (DELETED)
"fd421aeb" # csum
"5b8d9b44" # timestamp
"0102" # WIRE_CHANNEL_UPDATE
"1ea7c2eadf8a29eb8690511a519b5656e29aa0a853771c4e38e65c5abf43d907295a915e69e451f4c7a0c3dc13dd943cfbe3ae88c0b96667cd7d58955dbfedcf43497fd7f826957108f4a30fd9cec3aeba79972084e90ead01ea33090000000013a63c0000b500015b8d9b440000009000000000000003e8000003e800000001"
"00000095" # len
"f036515e" # csum
"5aab817c" # timestamp
"0101" # WIRE_NODE_ANNOUNCEMENT
"cf5d870bc7ecabcb7cd16898ef66891e5f0c6c5851bd85b670f03d325bc44d7544d367cd852e18ec03f7f4ff369b06860a3b12b07b29f36fb318ca11348bf8ec00005aab817c03f113414ebdc6c1fb0f33c99cd5a1d09dd79e7fdf2468cf1fe1af6674361695d23974b250757a7a6c6549544300000000000000000000000000000000000000000000000007010566933e2607"
"00000082" # len
"fd421aeb" # csum
"5b8d9b44" # timestamp
"0102" # WIRE_CHANNEL_UPDATE
"1ea7c2eadf8a29eb8690511a519b5656e29aa0a853771c4e38e65c5abf43d907295a915e69e451f4c7a0c3dc13dd943cfbe3ae88c0b96667cd7d58955dbfedcf43497fd7f826957108f4a30fd9cec3aeba79972084e90ead01ea33090000000013a63c0000b500015b8d9b440000009000000000000003e8000003e800000001"))
l1.start()
# May preceed the Started msg waited for in 'start'.
wait_for(lambda: l1.daemon.is_in_log(r'gossip_store: Read 1/1/1/0 cannounce/cupdate/nannounce/cdelete from store \(0 deleted\) in 770 bytes'))
assert not l1.daemon.is_in_log('gossip_store.*truncating')
# Extra sanity check if we can.
if DEVELOPER:
l1.rpc.call('dev-compact-gossip-store')
l1.restart()
l1.rpc.call('dev-compact-gossip-store')
def test_gossip_store_load_amount_truncated(node_factory):
"""Make sure we can read canned gossip store with truncated amount"""
l1 = node_factory.get_node(start=False, allow_broken_log=True)
with open(os.path.join(l1.daemon.lightning_dir, 'gossip_store'), 'wb') as f:
f.write(bytearray.fromhex("07" # GOSSIP_STORE_VERSION
"000001b0" # len
"fea676e8" # csum
"5b8d9b44" # timestamp
"0100" # WIRE_CHANNEL_ANNOUNCEMENT
"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"))
l1.start()
# May preceed the Started msg waited for in 'start'.
wait_for(lambda: l1.daemon.is_in_log(r'gossip_store: dangling channel_announcement. Moving to gossip_store.corrupt and truncating'))
wait_for(lambda: l1.daemon.is_in_log(r'gossip_store: Read 0/0/0/0 cannounce/cupdate/nannounce/cdelete from store \(0 deleted\) in 1 bytes'))
assert os.path.exists(os.path.join(l1.daemon.lightning_dir, 'gossip_store.corrupt'))
# Extra sanity check if we can.
if DEVELOPER:
l1.rpc.call('dev-compact-gossip-store')
l1.restart()
l1.rpc.call('dev-compact-gossip-store')
@unittest.skipIf(not DEVELOPER, "Needs fast gossip propagation")
def test_node_reannounce(node_factory, bitcoind):
"Test that we reannounce a node when parameters change"
l1, l2 = node_factory.line_graph(2, opts={'may_reconnect': True,
'log_all_io': True})
bitcoind.generate_block(5)
# Wait for node_announcement for l1.
l2.daemon.wait_for_log(r'\[IN\] 0101.*{}'.format(l1.info['id']))
# Wait for it to process it.
wait_for(lambda: l2.rpc.listnodes(l1.info['id'])['nodes'] != [])
wait_for(lambda: 'alias' in only_one(l2.rpc.listnodes(l1.info['id'])['nodes']))
assert only_one(l2.rpc.listnodes(l1.info['id'])['nodes'])['alias'].startswith('JUNIORBEAM')
l1.stop()
l1.daemon.opts['alias'] = 'SENIORBEAM'
# It won't update within 5 seconds, so sleep.
time.sleep(5)
l1.start()
# Wait for l1 to send us its own node_announcement.
nannouncement = l2.daemon.wait_for_log(r'{}.*\[IN\] 0101.*{}'.format(l1.info['id'], l1.info['id'])).split('[IN] ')[1]
wait_for(lambda: only_one(l2.rpc.listnodes(l1.info['id'])['nodes'])['alias'] == 'SENIORBEAM')
# Restart should re-xmit exact same update on reconnect, but make sure
# l2 doesn't send it first!
l1.stop()
l2.stop()
os.remove(os.path.join(l2.daemon.lightning_dir, 'gossip_store'))
l2.start()
l1.start()
# l1 should retransmit it exactly the same (no timestamp change!)
l2.daemon.wait_for_log(r'{}.*\[IN\] {}'.format(l1.info['id'], nannouncement))
# Won't have queued up another one, either.
assert not l1.daemon.is_in_log('node_announcement: delaying')
def test_gossipwith(node_factory):
l1, l2 = node_factory.line_graph(2, wait_for_announce=True)
out = subprocess.run(['devtools/gossipwith',
'--initial-sync',
'--max-messages=5',
'{}@localhost:{}'.format(l1.info['id'], l1.port)],
check=True,
timeout=TIMEOUT, stdout=subprocess.PIPE).stdout
num_msgs = 0
while len(out):
l, t = struct.unpack('>HH', out[0:4])
# channel_announcement node_announcement or channel_update
assert t == 256 or t == 257 or t == 258
out = out[2 + l:]
num_msgs += 1
# one channel announcement, two channel_updates, two node announcements.
assert num_msgs == 5
def test_gossip_notices_close(node_factory, bitcoind):
# We want IO logging so we can replay a channel_announce to l1.
l1 = node_factory.get_node(options={'log-level': 'io'})
l2, l3 = node_factory.line_graph(2)
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
# FIXME: sending SIGUSR1 immediately may kill it before handler installed.
l1.daemon.wait_for_log('Handed peer, entering loop')
subprocess.run(['kill', '-USR1', l1.subd_pid('openingd')])
bitcoind.generate_block(5)
# Make sure l1 learns about channel and nodes.
wait_for(lambda: len(l1.rpc.listchannels()['channels']) == 2)
wait_for(lambda: ['alias' in n for n in l1.rpc.listnodes()['nodes']] == [True, True])
l1.rpc.disconnect(l2.info['id'])
# Grab channel_announcement from io logs (ends in ')
channel_announcement = l1.daemon.is_in_log(r'\[IN\] 0100').split(' ')[-1][:-1]
channel_update = l1.daemon.is_in_log(r'\[IN\] 0102').split(' ')[-1][:-1]
node_announcement = l1.daemon.is_in_log(r'\[IN\] 0101').split(' ')[-1][:-1]
txid = l2.rpc.close(l3.info['id'])['txid']
wait_for(lambda: only_one(l2.rpc.listpeers(l3.info['id'])['peers'])['channels'][0]['state'] == 'CLOSINGD_COMPLETE')
bitcoind.generate_block(1, txid)
wait_for(lambda: l1.rpc.listchannels()['channels'] == [])
wait_for(lambda: l1.rpc.listnodes()['nodes'] == [])
# FIXME: This is a hack: we should have a framework for canned conversations
# This doesn't naturally terminate, so we give it 5 seconds.
try:
subprocess.run(['devtools/gossipwith',
'{}@localhost:{}'.format(l1.info['id'], l1.port),
channel_announcement,
channel_update,
node_announcement],
timeout=5, stdout=subprocess.PIPE)
except subprocess.TimeoutExpired:
pass
# l1 should reject it.
assert(l1.rpc.listchannels()['channels'] == [])
assert(l1.rpc.listnodes()['nodes'] == [])
l1.stop()
l1.start()
assert(l1.rpc.listchannels()['channels'] == [])
assert(l1.rpc.listnodes()['nodes'] == [])
def test_getroute_exclude_duplicate(node_factory):
"""Test that accidentally duplicating the same channel or same node
in the exclude list will not have permanent effects.
"""
l1, l2 = node_factory.line_graph(2, wait_for_announce=True)
# Starting route
route = l1.rpc.getroute(l2.info['id'], 1, 1)['route']
# l1 id is > l2 id, so 1 means l1->l2
chan_l1l2 = route[0]['channel'] + '/1'
# This should fail to find a route as the only viable channel
# is excluded, and worse, is excluded twice.
with pytest.raises(RpcError):
l1.rpc.getroute(l2.info['id'], 1, 1, exclude=[chan_l1l2, chan_l1l2])
# This should still succeed since nothing is excluded anymore
# and in particular should return the exact same route as
# earlier.
route2 = l1.rpc.getroute(l2.info['id'], 1, 1)['route']
assert route == route2
# This should also fail to find a route as the only viable channel
# is excluded, and worse, is excluded twice.
with pytest.raises(RpcError):
l1.rpc.getroute(l2.info['id'], 1, 1, exclude=[l2.info['id'], l2.info['id']])
# This should still succeed since nothing is excluded anymore
# and in particular should return the exact same route as
# earlier.
route3 = l1.rpc.getroute(l2.info['id'], 1, 1)['route']
assert route == route3
@unittest.skipIf(not DEVELOPER, "gossip propagation is slow without DEVELOPER=1")
def test_getroute_exclude(node_factory, bitcoind):
"""Test getroute's exclude argument"""
l1, l2, l3, l4 = node_factory.line_graph(4, wait_for_announce=True)
# This should work
route = l1.rpc.getroute(l4.info['id'], 1, 1)['route']
# l1 id is > l2 id, so 1 means l1->l2
chan_l1l2 = route[0]['channel'] + '/1'
chan_l2l1 = route[0]['channel'] + '/0'
# This should not
with pytest.raises(RpcError):
l1.rpc.getroute(l4.info['id'], 1, 1, exclude=[chan_l1l2])
# This should also not
with pytest.raises(RpcError):
l1.rpc.getroute(l4.info['id'], 1, 1, exclude=[l2.info['id']])
# Blocking the wrong way should be fine.
l1.rpc.getroute(l4.info['id'], 1, 1, exclude=[chan_l2l1])
# Now, create an alternate (better) route.
l2.rpc.connect(l4.info['id'], 'localhost', l4.port)
scid = l2.fund_channel(l4, 1000000, wait_for_active=False)
bitcoind.generate_block(5)
# We don't wait above, because we care about it hitting l1.
l1.daemon.wait_for_logs([r'update for channel {}/0 now ACTIVE'
.format(scid),
r'update for channel {}/1 now ACTIVE'
.format(scid)])
# l3 id is > l2 id, so 1 means l3->l2
# chan_l3l2 = route[1]['channel'] + '/1'
chan_l2l3 = route[1]['channel'] + '/0'
# l4 is > l2
# chan_l4l2 = scid + '/1'
chan_l2l4 = scid + '/0'
# This works
l1.rpc.getroute(l4.info['id'], 1, 1, exclude=[chan_l2l3])
# This works
l1.rpc.getroute(l4.info['id'], 1, 1, exclude=[chan_l2l4])
# This works
l1.rpc.getroute(l4.info['id'], 1, 1, exclude=[l3.info['id']])
# This doesn't
with pytest.raises(RpcError):
l1.rpc.getroute(l4.info['id'], 1, 1, exclude=[chan_l2l3, chan_l2l4])
# This doesn't
with pytest.raises(RpcError):
l1.rpc.getroute(l4.info['id'], 1, 1, exclude=[l3.info['id'], chan_l2l4])
l5 = node_factory.get_node()
l1.rpc.connect(l5.info['id'], 'localhost', l5.port)
scid15 = l1.fund_channel(l5, 1000000, wait_for_active=False)
l5.rpc.connect(l4.info['id'], 'localhost', l4.port)
scid54 = l5.fund_channel(l4, 1000000, wait_for_active=False)
bitcoind.generate_block(5)
# We don't wait above, because we care about it hitting l1.
l1.daemon.wait_for_logs([r'update for channel {}/0 now ACTIVE'
.format(scid15),
r'update for channel {}/1 now ACTIVE'
.format(scid15),
r'update for channel {}/0 now ACTIVE'
.format(scid54),
r'update for channel {}/1 now ACTIVE'
.format(scid54)])
# This works now
l1.rpc.getroute(l4.info['id'], 1, 1, exclude=[l3.info['id'], chan_l2l4])
# This works now
l1.rpc.getroute(l4.info['id'], 1, 1, exclude=[l3.info['id'], l5.info['id']])
# This doesn't work
with pytest.raises(RpcError):
l1.rpc.getroute(l4.info['id'], 1, 1, exclude=[l3.info['id'], l5.info['id'], chan_l2l4])
# This doesn't work
with pytest.raises(RpcError):
l1.rpc.getroute(l4.info['id'], 1, 1, exclude=[chan_l2l3, l5.info['id'], chan_l2l4])
@unittest.skipIf(not DEVELOPER, "need dev-compact-gossip-store")
def test_gossip_store_local_channels(node_factory, bitcoind):
l1, l2 = node_factory.line_graph(2, wait_for_announce=False)
# We see this channel, even though it's not announced, because it's local.
wait_for(lambda: len(l1.rpc.listchannels()['channels']) == 2)
l2.stop()
l1.restart()
# We should still see local channels!
time.sleep(3) # Make sure store is loaded
chans = l1.rpc.listchannels()['channels']
assert len(chans) == 2
# Now compact store
l1.rpc.call('dev-compact-gossip-store')
l1.restart()
time.sleep(3) # Make sure store is loaded
# We should still see local channels!
chans = l1.rpc.listchannels()['channels']
assert len(chans) == 2
@unittest.skipIf(not DEVELOPER, "need dev-compact-gossip-store")
def test_gossip_store_private_channels(node_factory, bitcoind):
l1, l2 = node_factory.line_graph(2, announce_channels=False)
# We see this channel, even though it's not announced, because it's local.
wait_for(lambda: len(l1.rpc.listchannels()['channels']) == 2)
l2.stop()
l1.restart()
# We should still see local channels!
time.sleep(3) # Make sure store is loaded
chans = l1.rpc.listchannels()['channels']
assert len(chans) == 2
# Now compact store
l1.rpc.call('dev-compact-gossip-store')
l1.restart()
time.sleep(3) # Make sure store is loaded
# We should still see local channels!
chans = l1.rpc.listchannels()['channels']
assert len(chans) == 2
def setup_gossip_store_test(node_factory, bitcoind):
l1, l2, l3 = node_factory.line_graph(3, fundchannel=False)
# Create channel.
scid23 = l2.fund_channel(l3, 10**6)
# Have that channel announced.
bitcoind.generate_block(5)
# Make sure we've got node_announcements
wait_for(lambda: ['alias' in n for n in l2.rpc.listnodes()['nodes']] == [True, True])
# Now, replace the one channel_update, so it's past the node announcements.
l2.rpc.setchannelfee(l3.info['id'], 20, 1000)
# Old base feerate is 1.
wait_for(lambda: sum([c['base_fee_millisatoshi'] for c in l2.rpc.listchannels()['channels']]) == 21)
# Create another channel, which will stay private.
scid12 = l1.fund_channel(l2, 10**6)
# Now insert channel_update for previous channel; now they're both past the
# node announcements.
l3.rpc.setchannelfee(l2.info['id'], 20, 1000)
wait_for(lambda: [c['base_fee_millisatoshi'] for c in l2.rpc.listchannels(scid23)['channels']] == [20, 20])
# Replace both (private) updates for scid12.
l1.rpc.setchannelfee(l2.info['id'], 20, 1000)
l2.rpc.setchannelfee(l1.info['id'], 20, 1000)
wait_for(lambda: [c['base_fee_millisatoshi'] for c in l2.rpc.listchannels(scid12)['channels']] == [20, 20])
# Records in store now looks (something) like:
# DELETED: local-add-channel (scid23)
# DELETED: private channel_update (scid23/0)
# DELETED: private channel_update (scid23/1)
# channel_announcement (scid23)
# channel_amount
# DELETED: channel_update (scid23/0)
# DELETED: channel_update (scid23/1)
# node_announcement
# node_announcement
# channel_update (scid23)
# local_add_channel (scid12)
# DELETED: private channel_update (scid12/0)
# DELETED: private channel_update (scid12/1)
# channel_update (scid23)
# private_channel_update (scid12)
# private_channel_update (scid12)
return l2
@unittest.skipIf(not DEVELOPER, "need dev-compact-gossip-store")
def test_gossip_store_compact_noappend(node_factory, bitcoind):
l2 = setup_gossip_store_test(node_factory, bitcoind)
# It should truncate this, not leave junk!
with open(os.path.join(l2.daemon.lightning_dir, 'gossip_store.tmp'), 'wb') as f:
f.write(bytearray.fromhex("07deadbeef"))
l2.rpc.call('dev-compact-gossip-store')
l2.restart()
wait_for(lambda: l2.daemon.is_in_log('gossip_store: Read '))
assert not l2.daemon.is_in_log('gossip_store:.*truncate')
@unittest.skipIf(not DEVELOPER, "updates are delayed without --dev-fast-gossip")
def test_gossip_store_load_complex(node_factory, bitcoind):
l2 = setup_gossip_store_test(node_factory, bitcoind)
l2.restart()
wait_for(lambda: l2.daemon.is_in_log('gossip_store: Read '))
@unittest.skipIf(not DEVELOPER, "need dev-compact-gossip-store")
def test_gossip_store_compact(node_factory, bitcoind):
l2 = setup_gossip_store_test(node_factory, bitcoind)
# Now compact store.
l2.rpc.call('dev-compact-gossip-store')
# Should still be connected.
time.sleep(1)
assert len(l2.rpc.listpeers()['peers']) == 2
# Should restart ok.
l2.restart()
wait_for(lambda: l2.daemon.is_in_log('gossip_store: Read '))
@unittest.skipIf(not DEVELOPER, "need dev-compact-gossip-store")
def test_gossip_store_compact_restart(node_factory, bitcoind):
l2 = setup_gossip_store_test(node_factory, bitcoind)
# Should restart ok.
l2.restart()
wait_for(lambda: l2.daemon.is_in_log('gossip_store: Read '))
# Now compact store.
l2.rpc.call('dev-compact-gossip-store')
@unittest.skipIf(not DEVELOPER, "need dev-compact-gossip-store")
def test_gossip_store_load_no_channel_update(node_factory):
"""Make sure we can read truncated gossip store with a channel_announcement and no channel_update"""
l1 = node_factory.get_node(start=False, allow_broken_log=True)
# A channel announcement with no channel_update.
with open(os.path.join(l1.daemon.lightning_dir, 'gossip_store'), 'wb') as f:
f.write(bytearray.fromhex("07" # GOSSIP_STORE_VERSION
"000001b0" # len
"fea676e8" # csum
"5b8d9b44" # timestamp
"0100" # WIRE_CHANNEL_ANNOUNCEMENT
"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"
"0000000a" # len
"99dc98b4" # csum
"00000000" # timestamp
"1005" # WIRE_GOSSIP_STORE_CHANNEL_AMOUNT
"0000000001000000"
"00000095" # len
"f036515e" # csum
"5aab817c" # timestamp
"0101" # WIRE_NODE_ANNOUNCEMENT
"cf5d870bc7ecabcb7cd16898ef66891e5f0c6c5851bd85b670f03d325bc44d7544d367cd852e18ec03f7f4ff369b06860a3b12b07b29f36fb318ca11348bf8ec00005aab817c03f113414ebdc6c1fb0f33c99cd5a1d09dd79e7fdf2468cf1fe1af6674361695d23974b250757a7a6c6549544300000000000000000000000000000000000000000000000007010566933e2607"))
l1.start()
# May preceed the Started msg waited for in 'start'.
wait_for(lambda: l1.daemon.is_in_log('gossip_store: Unupdated channel_announcement at 1. Moving to gossip_store.corrupt and truncating'))
assert os.path.exists(os.path.join(l1.daemon.lightning_dir, 'gossip_store.corrupt'))
# This should actually result in an empty store.
l1.rpc.call('dev-compact-gossip-store')
with open(os.path.join(l1.daemon.lightning_dir, 'gossip_store'), "rb") as f:
assert bytearray(f.read()) == bytearray.fromhex("07")
@unittest.skipIf(not DEVELOPER, "gossip without DEVELOPER=1 is slow")
def test_gossip_store_compact_on_load(node_factory, bitcoind):
l2 = setup_gossip_store_test(node_factory, bitcoind)
l2.restart()
wait_for(lambda: l2.daemon.is_in_log(r'gossip_store_compact_offline: [5-8] deleted, 9 copied'))
wait_for(lambda: l2.daemon.is_in_log(r'gossip_store: Read 1/4/2/0 cannounce/cupdate/nannounce/cdelete from store \(0 deleted\) in 1446 bytes'))
def test_gossip_announce_invalid_block(node_factory, bitcoind):
"""bitcoind lags and we might get an announcement for a block we don't have.
"""
# Need to slow down the poll interval so the announcement preceeds the
# blockchain catchup, otherwise we won't call `getfilteredblock`.
opts = {}
if DEVELOPER:
opts['dev-bitcoind-poll'] = TIMEOUT // 2
l1 = node_factory.get_node(options=opts)
bitcoind.generate_block(1)
assert bitcoind.rpc.getblockchaininfo()['blocks'] == 102
# Test gossip for an unknown block.
subprocess.run(['devtools/gossipwith',
'--max-messages=0',
'{}@localhost:{}'.format(l1.info['id'], l1.port),
# short_channel_id=103x1x1
'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'],
check=True, timeout=TIMEOUT)
# Make sure it's OK once it's caught up.
sync_blockheight(bitcoind, [l1])
def test_gossip_announce_unknown_block(node_factory, bitcoind):
"""Don't backfill the future!
If we get a channel_announcement that is for a block height that is above
our sync height we should not store the filteredblock in the blocks table,
otherwise we end up with a duplicate when we finally catch up with the
blockchain.
"""
# Need to slow down the poll interval so the announcement preceeds the
# blockchain catchup, otherwise we won't call `getfilteredblock`.
opts = {}
if DEVELOPER:
opts['dev-bitcoind-poll'] = TIMEOUT // 2
l1 = node_factory.get_node(options=opts)
bitcoind.generate_block(2)
assert bitcoind.rpc.getblockchaininfo()['blocks'] == 103
# Test gossip for unknown block.
subprocess.run(['devtools/gossipwith',
'--max-messages=0',
'{}@localhost:{}'.format(l1.info['id'], l1.port),
# short_channel_id=103x1x1
'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'],
check=True, timeout=TIMEOUT)
# Make sure it's OK once it's caught up.
sync_blockheight(bitcoind, [l1])
@unittest.skipIf(not DEVELOPER, "gossip without DEVELOPER=1 is slow")
def test_gossip_no_backtalk(node_factory):
l1, l2 = node_factory.line_graph(2, wait_for_announce=True)
# This connects, gets gossip, but should *not* play it back.
l3 = node_factory.get_node(log_all_io=True)
l3.rpc.connect(l2.info['id'], 'localhost', l2.port)
# Will get channel_announce, then two channel_update and two node_announcement
l3.daemon.wait_for_logs([r'\[IN\] 0100',
r'\[IN\] 0102', r'\[IN\] 0102',
r'\[IN\] 0101', r'\[IN\] 0101'])
# With DEVELOPER, this is long enough for gossip flush.
time.sleep(2)
assert not l3.daemon.is_in_log(r'\[OUT\] 0100')
@unittest.skipIf(not DEVELOPER, "Needs --dev-gossip")
def test_gossip_ratelimit(node_factory):
# These make the channel exist, but we use our own gossip.
l1, l2 = node_factory.line_graph(2, wait_for_announce=True)
# Here are some ones I generated earlier (by removing gossip
# ratelimiting)
l3 = node_factory.get_node(options={'dev-gossip-time': 1568096251})
subprocess.run(['devtools/gossipwith',
'--max-messages=0',
'{}@localhost:{}'.format(l3.info['id'], l3.port),
# announcement
'0100987b271fc95a37dbed78e6159e0ab792cda64603780454ce80832b4e31f63a6760abc8fdc53be35bb7cfccd125ee3d15b4fbdfb42165098970c19c7822bb413f46390e0c043c777226927eacd2186a03f064e4bdc30f891cb6e4990af49967d34b338755e99d728987e3d49227815e17f3ab40092434a59e33548e870071176db7d44d8c8f4c4cac27ae6554eb9350e97d47617e3a1355296c78e8234446fa2f138ad1b03439f18520227fb9e9eb92689b3a0ed36e6764f5a41777e9a2a4ce1026d19a4e4d8f7715c13ac2d6bf3238608a1ccf9afd91f774d84d170d9edddebf7460c54d49bd6cd81410bc3eeeba2b7278b1b5f7e748d77d793f31086847d582000006226e46111a0b59caaf126043eb5bbf28c34f3a5e332a1fc7b2b73cf188910f0000670000010001022d223620a359a47ff7f7ac447c85c46c923da53389221a0054c11c1e3ca31d590266e4598d1d3c415f572a8488830b60f7e744ed9235eb0b1ba93283b315c0351802e3bd38009866c9da8ec4aa99cc4ea9c6c0dd46df15c61ef0ce1f271291714e5702324266de8403b3ab157a09f1f784d587af61831c998c151bcc21bb74c2b2314b',
# first update is free
'010225bfd9c5e2c5660188a14deb4002cd645ee67f00ad3b82146e46711ec460cb0c6819fdd1c680cb6d24e3906679ef071f13243a04a123e4b83310ebf0518ffd4206226e46111a0b59caaf126043eb5bbf28c34f3a5e332a1fc7b2b73cf188910f00006700000100015d773ffb010100060000000000000000000000010000000a000000003b023380'],
check=True, timeout=TIMEOUT)
# Wait for it to process channel.
wait_for(lambda: [c['fee_per_millionth'] for c in l3.rpc.listchannels()['channels']] == [10])
subprocess.run(['devtools/gossipwith',
'--max-messages=0',
'{}@localhost:{}'.format(l3.info['id'], l3.port),
# next 4 are let through...
'01023a892ad9c9953a54ad3b8e2e03a93d1c973241b62f9a5cd1f17d5cdf08de0e8b4fcd24aa8bd45a48b788fe9dab3d416f28dfa390bc900ec0176ec5bd1afd435706226e46111a0b59caaf126043eb5bbf28c34f3a5e332a1fc7b2b73cf188910f00006700000100015d77400001010006000000000000000000000014000003e9000000003b023380',
'010245966763623ebc16796165263d4b21711ef04ebf3929491e695ff89ed2b8ccc0668ceb9e35e0ff5b8901d95732a119c1ed84ac99861daa2de462118f7b70049f06226e46111a0b59caaf126043eb5bbf28c34f3a5e332a1fc7b2b73cf188910f00006700000100015d77400101010006000000000000000000000014000003ea000000003b023380',
'0102c479b7684b9db496b844f6925f4ffd8a27c5840a020d1b537623c1545dcd8e195776381bbf51213e541a853a4a49a0faf84316e7ccca5e7074901a96bbabe04e06226e46111a0b59caaf126043eb5bbf28c34f3a5e332a1fc7b2b73cf188910f00006700000100015d77400201010006000000000000000000000014000003eb000000003b023380',
# timestamp=1568096259, fee_proportional_millionths=1004
'01024b866012d995d3d7aec7b7218a283de2d03492dbfa21e71dd546ec2e36c3d4200453420aa02f476f99c73fe1e223ea192f5fa544b70a8319f2a216f1513d503d06226e46111a0b59caaf126043eb5bbf28c34f3a5e332a1fc7b2b73cf188910f00006700000100015d77400301010006000000000000000000000014000003ec000000003b023380',
# update 5 marks you as a nasty spammer!
'01025b5b5a0daed874ab02bd3356d38190ff46bbaf5f10db5067da70f3ca203480ca78059e6621c6143f3da4e454d0adda6d01a9980ed48e71ccd0c613af73570a7106226e46111a0b59caaf126043eb5bbf28c34f3a5e332a1fc7b2b73cf188910f00006700000100015d77400401010006000000000000000000000014000003ed000000003b023380'],
check=True, timeout=TIMEOUT)
wait_for(lambda: [c['fee_per_millionth'] for c in l3.rpc.listchannels()['channels']] == [1004])
# 24 seconds later, it will accept another.
l3.rpc.call('dev-gossip-set-time', [1568096251 + 24])
subprocess.run(['devtools/gossipwith',
'--max-messages=0',
'{}@localhost:{}'.format(l3.info['id'], l3.port),
# update 6: timestamp=1568096284 fee_proportional_millionths=1006
'010282d24bcd984956bd9b891848404ee59d89643923b21641d2c2c0770a51b8f5da00cef82458add970f0b654aa4c8d54f68a9a1cc6470a35810303b09437f1f73d06226e46111a0b59caaf126043eb5bbf28c34f3a5e332a1fc7b2b73cf188910f00006700000100015d77401c01010006000000000000000000000014000003ee000000003b023380'],
check=True, timeout=TIMEOUT)
wait_for(lambda: [c['fee_per_millionth'] for c in l3.rpc.listchannels()['channels']] == [1006])