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test_gossip.py
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test_gossip.py
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from collections import Counter
from ephemeral_port_reserve import reserve
from fixtures import * # noqa: F401,F403
from fixtures import TEST_NETWORK
from pyln.client import RpcError, Millisatoshi
from utils import (
DEVELOPER, wait_for, TIMEOUT, only_one, sync_blockheight,
expected_node_features,
mine_funding_to_announce, default_ln_port, CHANNEL_SIZE
)
import json
import logging
import math
import os
import pytest
import struct
import subprocess
import time
import unittest
import socket
with open('config.vars') as configfile:
config = dict([(line.rstrip().split('=', 1)) for line in configfile])
@pytest.mark.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,
'allow_bad_gossip': True})
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
l2.rpc.connect(l3.info['id'], 'localhost', l3.port)
scid1, _ = l1.fundchannel(l2, 10**6)
scid2, _ = l2.fundchannel(l3, 10**6)
mine_funding_to_announce(bitcoind, [l1, l2, l3])
# 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)
# Also check that it sends a redundant node_announcement.
ts1 = only_one(l2.rpc.listnodes(l1.info['id'])['nodes'])['last_timestamp']
wait_for(lambda: only_one(l2.rpc.listnodes(l1.info['id'])['nodes'])['last_timestamp'] != ts1)
assert only_one(l2.rpc.listnodes(l1.info['id'])['nodes'])['last_timestamp'] >= ts1 + 24
# 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']]
@pytest.mark.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.fundchannel(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)
@pytest.mark.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-dns': True,
'announce-addr':
['4acth47i6kxnvkewtm6q7ib2s3ufpo5sqbsnzjpbi7utijcltosqemad.onion',
'1.2.3.4:1234',
'example.com:1236',
'::'],
'log-level': 'io',
'dev-allow-localhost': None}
l1, l2 = node_factory.get_nodes(2, opts=[opts, {}])
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
scid, _ = l1.fundchannel(l2, 10**6)
bitcoind.generate_block(5)
l1.wait_channel_active(scid)
l2.wait_channel_active(scid)
# We should see it send node announce with all addresses (257 = 0x0101)
# Note: local ephemeral port is masked out.
# Note: Since we `disable-dns` it should not announce a resolved IPv4
# or IPv6 address for example.com
#
# Also expect the address descriptor types to be sorted!
# BOLT #7:
# - MUST place address descriptors in ascending order.
l1.daemon.wait_for_log(r"\[OUT\] 0101.*0056"
"010102030404d2" # IPv4 01 1.2.3.4:1234
"017f000001...." # IPv4 01 127.0.0.1:wxyz
"0200000000000000000000000000000000...." # IPv6 02 :::<any_port>
"04e00533f3e8f2aedaa8969b3d0fa03a96e857bbb28064dca5e147e934244b9ba5023003...." # TORv3 04
"050b6578616d706c652e636f6d04d4") # DNS 05 len example.com:1236
# Check other node can parse these (make sure it has digested msg)
wait_for(lambda: 'addresses' in l2.rpc.listnodes(l1.info['id'])['nodes'][0])
addresses = l2.rpc.listnodes(l1.info['id'])['nodes'][0]['addresses']
addresses_dns = [address for address in addresses if address['type'] == 'dns']
assert len(addresses) == 5
assert len(addresses_dns) == 1
assert addresses_dns[0]['address'] == 'example.com'
assert addresses_dns[0]['port'] == 1236
def test_announce_dns_suppressed(node_factory, bitcoind):
"""By default announce DNS names as IPs"""
opts = {'announce-addr': 'example.com:1236',
'start': False}
l1, l2 = node_factory.get_nodes(2, opts=[opts, {}])
# Remove unwanted disable-dns option!
del l1.daemon.opts['disable-dns']
l1.start()
# Need a channel so l1 will announce itself.
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
scid, _ = l1.fundchannel(l2, 10**6)
bitcoind.generate_block(5)
# Wait for l2 to see l1, with addresses.
wait_for(lambda: l2.rpc.listnodes(l1.info['id'])['nodes'] != [])
wait_for(lambda: 'addresses' in only_one(l2.rpc.listnodes(l1.info['id'])['nodes']))
addresses = only_one(l2.rpc.listnodes(l1.info['id'])['nodes'])['addresses']
assert len(addresses) == 1
assert addresses[0]['type'] in ['ipv4', 'ipv6']
assert addresses[0]['address'] != 'example.com'
assert addresses[0]['port'] == 1236
@pytest.mark.developer("gossip without DEVELOPER=1 is slow")
def test_announce_and_connect_via_dns(node_factory, bitcoind):
""" Test that DNS annoucements propagate and can be used when connecting.
- First node announces only a FQDN like 'localhost.localdomain'.
- Second node gets a channel with first node.
- Third node just connects to second node.
- Fourth node with DNS disabled also connects to second node.
- Wait for gossip so third and fourth node sees first node.
- Third node must be able to 'resolve' 'localhost.localdomain'
and connect to first node.
- Fourth node must not be able to connect because he has disabled DNS.
Notes:
- --disable-dns is needed so the first node does not announce 127.0.0.1 itself.
- 'dev-allow-localhost' must not be set, so it does not resolve localhost anyway.
"""
opts1 = {'disable-dns': None,
'announce-addr-dns': True,
'announce-addr': ['localhost.localdomain:12345'], # announce dns
'bind-addr': ['127.0.0.1:12345', '[::1]:12345']} # and bind local IPs
opts3 = {'may_reconnect': True}
opts4 = {'disable-dns': None}
l1, l2, l3, l4 = node_factory.get_nodes(4, opts=[opts1, {}, opts3, opts4])
# In order to enable DNS on a pyln testnode we need to delete the
# 'disable-dns' opt (which is added by pyln test utils) and restart it.
del l3.daemon.opts['disable-dns']
l3.restart()
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
l3.rpc.connect(l2.info['id'], 'localhost', l2.port)
l4.rpc.connect(l2.info['id'], 'localhost', l2.port)
scid, _ = l1.fundchannel(l2, 10**6)
mine_funding_to_announce(bitcoind, [l1, l2, l3])
# wait until l3 and l4 see l1 via gossip with announced addresses
wait_for(lambda: len(l3.rpc.listnodes(l1.info['id'])['nodes']) == 1)
wait_for(lambda: len(l4.rpc.listnodes(l1.info['id'])['nodes']) == 1)
wait_for(lambda: 'addresses' in l3.rpc.listnodes(l1.info['id'])['nodes'][0])
wait_for(lambda: 'addresses' in l4.rpc.listnodes(l1.info['id'])['nodes'][0])
addresses = l3.rpc.listnodes(l1.info['id'])['nodes'][0]['addresses']
assert(len(addresses) == 1) # no other addresses must be announced for this
assert(addresses[0]['type'] == 'dns')
assert(addresses[0]['address'] == 'localhost.localdomain')
assert(addresses[0]['port'] == 12345)
# now l3 must be able to use DNS to resolve and connect to l1
result = l3.rpc.connect(l1.info['id'])
assert result['id'] == l1.info['id']
assert result['direction'] == 'out'
assert result['address']['port'] == 12345
if result['address']['type'] == 'ipv4':
assert result['address']['address'] == '127.0.0.1'
elif result['address']['type'] == 'ipv6':
assert result['address']['address'] == '::1'
else:
assert False
# l4 however must not be able to connect because he used '--disable-dns'
# This raises RpcError code 401, currently with an empty error message.
with pytest.raises(RpcError, match=r"401.*dns disabled"):
l4.rpc.connect(l1.info['id'])
def test_only_announce_one_dns(node_factory, bitcoind):
# and test that we can't announce more than one DNS address
l1 = node_factory.get_node(expect_fail=True, start=False,
options={'announce-addr-dns': True,
'announce-addr': ['localhost.localdomain:12345', 'example.com:12345']})
l1.daemon.start(wait_for_initialized=False, stderr_redir=True)
wait_for(lambda: l1.daemon.is_in_stderr("Only one DNS can be announced"))
def test_announce_dns_without_port(node_factory, bitcoind):
""" Checks that the port of a DNS announcement is set to the corresponding
network port. In this case regtest 19846
"""
opts = {'announce-addr-dns': True, 'announce-addr': ['example.com']}
l1 = node_factory.get_node(options=opts)
# 'address': [{'type': 'dns', 'address': 'example.com', 'port': 0}]
info = l1.rpc.getinfo()
assert info['address'][0]['type'] == 'dns'
assert info['address'][0]['address'] == 'example.com'
if TEST_NETWORK == 'regtest':
default_port = 19846
else:
assert TEST_NETWORK == 'liquid-regtest'
default_port = 20735
assert info['address'][0]['port'] == default_port
@pytest.mark.developer("needs DEVELOPER=1")
def test_gossip_timestamp_filter(node_factory, bitcoind, chainparams):
# Updates get backdated 5 seconds with --dev-fast-gossip.
backdate = 5
l1, l2, l3, l4 = node_factory.line_graph(4, fundchannel=False, opts={'log-level': 'io'})
genesis_blockhash = chainparams['chain_hash']
before_anything = int(time.time())
# Make a public channel.
chan12, _ = l1.fundchannel(l2, 10**5)
mine_funding_to_announce(bitcoind, [l1, l2, l3, l4])
l3.wait_for_channel_updates([chan12])
after_12 = int(time.time())
# Make another one, different timestamp.
time.sleep(10)
before_23 = int(time.time())
chan23, _ = l2.fundchannel(l3, 10**5)
bitcoind.generate_block(5)
l1.wait_for_channel_updates([chan23])
after_23 = int(time.time()) + 1
# Make sure l4 has received all the gossip.
wait_for(lambda: ['alias' in node for node in l4.rpc.listnodes()['nodes']] == [True, True, True])
msgs = l4.query_gossip('gossip_timestamp_filter',
genesis_blockhash,
'0', '0xFFFFFFFF',
filters=['0109', '0107', '0012'])
# 0x0100 = channel_announcement
# 0x0102 = channel_update
# 0x0101 = node_announcement
# The order of node_announcements relative to others is undefined.
types = Counter([m[0:4] for m in msgs])
assert types == Counter(['0100'] * 2 + ['0102'] * 4 + ['0101'] * 3)
# Now timestamp which doesn't overlap (gives nothing).
msgs = l4.query_gossip('gossip_timestamp_filter',
genesis_blockhash,
'0', before_anything - backdate,
filters=['0109', '0107', '0012'])
assert msgs == []
# Now choose range which will only give first update.
msgs = l4.query_gossip('gossip_timestamp_filter',
genesis_blockhash,
before_anything - backdate,
after_12 - before_anything + 1,
filters=['0109', '0107', '0012'])
# 0x0100 = channel_announcement
# 0x0102 = channel_update
# (Node announcement may have any timestamp)
types = Counter([m[0:4] for m in msgs])
assert types['0100'] == 1
assert types['0102'] == 2
# Now choose range which will only give second update.
msgs = l4.query_gossip('gossip_timestamp_filter',
genesis_blockhash,
before_23 - backdate,
after_23 - before_23 + 1,
filters=['0109', '0107', '0012'])
# 0x0100 = channel_announcement
# 0x0102 = channel_update
# (Node announcement may have any timestamp)
types = Counter([m[0:4] for m in msgs])
assert types['0100'] == 1
assert types['0102'] == 2
@pytest.mark.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',
'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.fundchannel(l3, 10**6)
mine_funding_to_announce(bitcoind, [l1, l2, l3])
# 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.
ret = l1.rpc.connect(l3.info['id'])
assert ret['address'] == {'type': 'ipv4', 'address': '127.0.0.1', 'port': l3.port}
# Now give it *wrong* port (after we make sure l2 isn't listening), it should fall back.
l1.rpc.disconnect(l3.info['id'])
l2.stop()
ret = l1.rpc.connect(l3.info['id'], 'localhost', l2.port)
assert ret['address'] == {'type': 'ipv4', 'address': '127.0.0.1', 'port': l3.port}
@pytest.mark.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']
if l1.info['id'] > l2.info['id']:
assert only_one(channels1)['direction'] == 1
else:
assert only_one(channels1)['direction'] == 0
assert channels1 == channels2
# Test listchannels-by-destination
channels1 = l1.rpc.listchannels(destination=l1.info['id'])['channels']
channels2 = l2.rpc.listchannels(destination=l1.info['id'])['channels']
assert only_one(channels1)['destination'] == l1.info['id']
assert only_one(channels1)['source'] == l2.info['id']
if l2.info['id'] > l1.info['id']:
assert only_one(channels1)['direction'] == 1
else:
assert only_one(channels1)['direction'] == 0
assert channels1 == channels2
# Test only one of short_channel_id, source or destination can be supplied
with pytest.raises(RpcError, match=r"Can only specify one of.*"):
l1.rpc.listchannels(source=l1.info['id'], destination=l2.info['id'])
with pytest.raises(RpcError, match=r"Can only specify one of.*"):
l1.rpc.listchannels(short_channel_id="1x1x1", source=l2.info['id'])
# 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]
@pytest.mark.developer("Too slow without --dev-fast-gossip")
def test_gossip_badsig(node_factory, bitcoind):
"""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.fundchannel(l1, 10**6)
l2.fundchannel(l3, 10**6)
# Wait for route propagation.
mine_funding_to_announce(bitcoind, [l1, l2, l3])
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]
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('Handed peer, entering loop')
l2.fundchannel(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
@pytest.mark.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.fundchannel(l2, 10**6)
scid23, _ = l2.fundchannel(l3, 10**6)
# Make channels public, except for l3 -> l4, which is kept local-only
mine_funding_to_announce(bitcoind, [l1, l2, l3, l4])
scid34, _ = l3.fundchannel(l4, 10**6, announce_channel=False)
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'])
# We need to wait for the unilateral close to hit the mempool,
# and 12 blocks for nodes to actually forget it.
bitcoind.generate_block(13, wait_for_mempool=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])
@pytest.mark.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, l2, l3 = node_factory.get_nodes(3,
opts=[{'disconnect': disconnects,
'may_reconnect': True},
{'may_reconnect': True},
{}])
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
l1.openchannel(l2, CHANNEL_SIZE)
# Now open new channels and everybody should sync
l2.rpc.connect(l3.info['id'], 'localhost', l3.port)
l2.openchannel(l3, CHANNEL_SIZE)
# Settle the gossip
for n in [l1, l2, l3]:
wait_for(lambda: len(n.rpc.listchannels()['channels']) == 4)
@pytest.mark.developer("needs fast gossip, dev-no-reconnect")
def test_gossip_no_empty_announcements(node_factory, bitcoind, chainparams):
# Need full IO logging so we can see gossip
# l2 sends CHANNEL_ANNOUNCEMENT to l1, but not CHANNEL_UDPATE.
l1, l2, l3, l4 = node_factory.line_graph(4, opts=[{'log-level': 'io',
'dev-no-reconnect': None},
{'log-level': 'io',
'disconnect': ['+WIRE_CHANNEL_ANNOUNCEMENT'],
'may_reconnect': True},
{'may_reconnect': True},
{'may_reconnect': True}],
fundchannel=False)
l3.fundchannel(l4, 10**5)
mine_funding_to_announce(bitcoind, [l1, l2, l3, l4])
# l2 sends CHANNEL_ANNOUNCEMENT to l1, then disconnects/
l2.daemon.wait_for_log('dev_disconnect')
l1.daemon.wait_for_log(r'\[IN\] 0100')
wait_for(lambda: l1.rpc.listchannels()['channels'] == [])
# l1 won't relay it (make sure it has time to digest though)
time.sleep(2)
encoded = subprocess.run(['devtools/mkencoded', '--scids', '00'],
check=True,
timeout=TIMEOUT,
stdout=subprocess.PIPE).stdout.strip().decode()
assert l1.query_gossip('query_channel_range',
chainparams['chain_hash'],
0, 1000000,
filters=['0109', '0107', '0012']) == ['0108'
# blockhash
+ chainparams['chain_hash']
# first_blocknum, number_of_blocks, complete
+ format(0, '08x') + format(1000000, '08x') + '01'
# encoded_short_ids
+ format(len(encoded) // 2, '04x')
+ encoded]
# If we reconnect, gossip will now flow.
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
wait_for(lambda: len(l1.rpc.listchannels()['channels']) == 2)
@pytest.mark.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, CHANNEL_SIZE, confirm=False, wait_for_announce=False)
# openchannel calls fundwallet which mines a block; so first channel
# is 4 deep, last is unconfirmed.
# Allow announce messages.
mine_funding_to_announce(bitcoind, nodes, num_blocks=6, wait_for_mempool=1)
# 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))
@pytest.mark.developer("needs dev-set-max-scids-encode-size")
def test_gossip_query_channel_range(node_factory, bitcoind, chainparams):
l1, l2, l3, l4 = node_factory.line_graph(4, fundchannel=False)
genesis_blockhash = chainparams['chain_hash']
# Make public channels on consecutive blocks
l1.fundwallet(10**6)
l2.fundwallet(10**6)
num_tx = len(bitcoind.rpc.getrawmempool())
# We want these one block apart.
l1.rpc.fundchannel(l2.info['id'], 10**5)['tx']
bitcoind.generate_block(wait_for_mempool=num_tx + 1)
sync_blockheight(bitcoind, [l1, l2, l3, l4])
l2.rpc.fundchannel(l3.info['id'], 10**5)['tx']
# Get them both to gossip depth.
mine_funding_to_announce(bitcoind, [l1, l2, l3, l4],
num_blocks=6,
wait_for_mempool=1)
# Make sure l4 has received all the gossip.
l4.daemon.wait_for_logs(['Received node_announcement for node ' + n.info['id'] for n in (l1, l2, l3)])
scid12 = l1.rpc.listpeerchannels(l2.info['id'])['channels'][0]['short_channel_id']
scid23 = l3.rpc.listpeerchannels(l2.info['id'])['channels'][0]['short_channel_id']
block12 = int(scid12.split('x')[0])
block23 = int(scid23.split('x')[0])
assert block23 == block12 + 1
# Asks l4 for all channels, gets both.
msgs = l4.query_gossip('query_channel_range',
chainparams['chain_hash'],
0, 1000000,
filters=['0109', '0107', '0012'])
encoded = subprocess.run(['devtools/mkencoded', '--scids', '00', scid12, scid23],
check=True,
timeout=TIMEOUT,
stdout=subprocess.PIPE).stdout.strip().decode()
# reply_channel_range == 264
assert msgs == ['0108'
# blockhash
+ genesis_blockhash
# first_blocknum, number_of_blocks, complete
+ format(0, '08x') + format(1000000, '08x') + '01'
# encoded_short_ids
+ format(len(encoded) // 2, '04x')
+ encoded]
# Does not include scid12
msgs = l4.query_gossip('query_channel_range',
genesis_blockhash,
0, block12,
filters=['0109', '0107', '0012'])
# reply_channel_range == 264
assert msgs == ['0108'
# blockhash
+ genesis_blockhash
# first_blocknum, number_of_blocks, complete
+ format(0, '08x') + format(block12, '08x') + '01'
# encoded_short_ids
'000100']
# Does include scid12
msgs = l4.query_gossip('query_channel_range',
genesis_blockhash,
0, block12 + 1,
filters=['0109', '0107', '0012'])
encoded = subprocess.run(['devtools/mkencoded', '--scids', '00', scid12],
check=True,
timeout=TIMEOUT,
stdout=subprocess.PIPE).stdout.strip().decode()
# reply_channel_range == 264
assert msgs == ['0108'
# blockhash
+ genesis_blockhash
# first_blocknum, number_of_blocks, complete
+ format(0, '08x') + format(block12 + 1, '08x') + '01'
# encoded_short_ids
+ format(len(encoded) // 2, '04x')
+ encoded]
# Doesn't include scid23
msgs = l4.query_gossip('query_channel_range',
genesis_blockhash,
0, block23,
filters=['0109', '0107', '0012'])
encoded = subprocess.run(['devtools/mkencoded', '--scids', '00', scid12],
check=True,
timeout=TIMEOUT,
stdout=subprocess.PIPE).stdout.strip().decode()
# reply_channel_range == 264
assert msgs == ['0108'
# blockhash
+ genesis_blockhash
# first_blocknum, number_of_blocks, complete
+ format(0, '08x') + format(block23, '08x') + '01'
# encoded_short_ids
+ format(len(encoded) // 2, '04x')
+ encoded]
# Does include scid23
msgs = l4.query_gossip('query_channel_range',
genesis_blockhash,
block12, block23 - block12 + 1,
filters=['0109', '0107', '0012'])
encoded = subprocess.run(['devtools/mkencoded', '--scids', '00', scid12, scid23],
check=True,
timeout=TIMEOUT,
stdout=subprocess.PIPE).stdout.strip().decode()
# reply_channel_range == 264
assert msgs == ['0108'
# blockhash
+ genesis_blockhash
# first_blocknum, number_of_blocks, complete
+ format(block12, '08x') + format(block23 - block12 + 1, '08x') + '01'
# encoded_short_ids
+ format(len(encoded) // 2, '04x')
+ encoded]
# Only includes scid23
msgs = l4.query_gossip('query_channel_range',
genesis_blockhash,
block23, 1,
filters=['0109', '0107', '0012'])
encoded = subprocess.run(['devtools/mkencoded', '--scids', '00', scid23],
check=True,
timeout=TIMEOUT,
stdout=subprocess.PIPE).stdout.strip().decode()
# reply_channel_range == 264
assert msgs == ['0108'
# blockhash
+ genesis_blockhash
# first_blocknum, number_of_blocks, complete
+ format(block23, '08x') + format(1, '08x') + '01'
# encoded_short_ids
+ format(len(encoded) // 2, '04x')
+ encoded]
# Past both
msgs = l4.query_gossip('query_channel_range',
genesis_blockhash,
block23 + 1, 1000000,
filters=['0109', '0107', '0012'])
# reply_channel_range == 264
assert msgs == ['0108'
# blockhash
+ genesis_blockhash
# first_blocknum, number_of_blocks, complete
+ format(block23 + 1, '08x') + format(1000000, '08x') + '01'
# encoded_short_ids
+ '000100']
# Make l4 split reply into two (technically async)
l4.rpc.dev_set_max_scids_encode_size(max=9)
l4.daemon.wait_for_log('Set max_scids_encode_bytes to 9')
msgs = l4.query_gossip('query_channel_range',
genesis_blockhash,
0, 1000000,
filters=['0109', '0107', '0012'])
# It should definitely have split
l4.daemon.wait_for_log('reply_channel_range: splitting 0-1 of 2')
start = 0
scids = '00'
for m in msgs:
assert m.startswith('0108' + genesis_blockhash)
this_start = int(m[4 + 64:4 + 64 + 8], base=16)
num = int(m[4 + 64 + 8:4 + 64 + 8 + 8], base=16)
# Pull off end of packet, assume it's uncompressed, and no TLVs!
scids += m[4 + 64 + 8 + 8 + 2 + 4 + 2:]
assert this_start == start
start += num
encoded = subprocess.run(['devtools/mkencoded', '--scids', '00', scid12, scid23],
check=True,
timeout=TIMEOUT,
stdout=subprocess.PIPE).stdout.strip().decode()
assert scids == encoded
# Test overflow case doesn't split forever; should still only get 2 for this
msgs = l4.query_gossip('query_channel_range',
genesis_blockhash,
1, 429496000,
filters=['0109', '0107', '0012'])
assert len(msgs) == 2
# Long test involving 4 lightningd instances.
@pytest.mark.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.
# 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)
print("src={}, dst={}".format(src.daemon.lightning_dir,
dst.daemon.lightning_dir))
c, _ = src.fundchannel(dst, 10**6)
channels.append(c)
mine_funding_to_announce(bitcoind, [l1, l2, l3, l4])
for c in channels:
l1.wait_channel_active(c)
# Test
inv = l4.rpc.invoice(1234567, 'inv', 'for testing')['bolt11']
l1.rpc.pay(inv)
@pytest.mark.developer("needs fast gossip")
def test_query_short_channel_id(node_factory, bitcoind, chainparams):
l1, l2, l3, l4 = node_factory.get_nodes(4)
l1.rpc.connect(l2.info['id'], 'localhost', l2.port)
l2.rpc.connect(l3.info['id'], 'localhost', l3.port)
chain_hash = chainparams['chain_hash']
# Empty result tests.
encoded = subprocess.run(['devtools/mkencoded', '--scids', '00', '1x1x1', '2x2x2'],
check=True,
timeout=TIMEOUT,
stdout=subprocess.PIPE).stdout.strip().decode()
msgs = l1.query_gossip('query_short_channel_ids',
chain_hash,
encoded,
filters=['0109', '0107', '0012'])
# Should just get the WIRE_REPLY_SHORT_CHANNEL_IDS_END = 262
# (with chainhash and completeflag = 1)
assert len(msgs) == 1
assert msgs[0] == '0106{}01'.format(chain_hash)
# Make channels public.
scid12, _ = l1.fundchannel(l2, 10**5)
scid23, _ = l2.fundchannel(l3, 10**5)
mine_funding_to_announce(bitcoind, [l1, l2, l3])
# Attach node which won't spam us (since it's not their channel).
l4.rpc.connect(l1.info['id'], 'localhost', l1.port)
l4.rpc.connect(l2.info['id'], 'localhost', l2.port)
l4.rpc.connect(l3.info['id'], 'localhost', l3.port)
# Make sure it sees all channels, then node announcements.
wait_for(lambda: len(l4.rpc.listchannels()['channels']) == 4)
wait_for(lambda: all('alias' in n for n in l4.rpc.listnodes()['nodes']))