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lnmsg.decode_msg: dict values for numbers are int, instead of BE bytes 

Will be useful for TLVs where it makes sense to do the conversion in lnmsg,
as it might be more complicated than just int.from_bytes().
master
SomberNight 6 years ago
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5 changed files with 75 additions and 68 deletions
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  1. 20
      electrum/channel_db.py
  2. 12
      electrum/lnchannel.py
  3. 17
      electrum/lnmsg.py
  4. 57
      electrum/lnpeer.py
  5. 37
      electrum/tests/test_lnrouter.py

20
electrum/channel_db.py
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@ -102,14 +102,14 @@ class Policy(NamedTuple):
def from_msg(payload: dict) -> 'Policy':
return Policy(
key = payload['short_channel_id'] + payload['start_node'],
cltv_expiry_delta = int.from_bytes(payload['cltv_expiry_delta'], "big"),
htlc_minimum_msat = int.from_bytes(payload['htlc_minimum_msat'], "big"),
htlc_maximum_msat = int.from_bytes(payload['htlc_maximum_msat'], "big") if 'htlc_maximum_msat' in payload else None,
fee_base_msat = int.from_bytes(payload['fee_base_msat'], "big"),
fee_proportional_millionths = int.from_bytes(payload['fee_proportional_millionths'], "big"),
cltv_expiry_delta = payload['cltv_expiry_delta'],
htlc_minimum_msat = payload['htlc_minimum_msat'],
htlc_maximum_msat = payload.get('htlc_maximum_msat', None),
fee_base_msat = payload['fee_base_msat'],
fee_proportional_millionths = payload['fee_proportional_millionths'],
message_flags = int.from_bytes(payload['message_flags'], "big"),
channel_flags = int.from_bytes(payload['channel_flags'], "big"),
timestamp = int.from_bytes(payload['timestamp'], "big")
timestamp = payload['timestamp'],
)
@staticmethod
@ -154,7 +154,7 @@ class NodeInfo(NamedTuple):
alias = alias.decode('utf8')
except:
alias = ''
timestamp = int.from_bytes(payload['timestamp'], "big")
timestamp = payload['timestamp']
node_info = NodeInfo(node_id=node_id, features=features, timestamp=timestamp, alias=alias)
return node_info, peer_addrs
@ -393,7 +393,7 @@ class ChannelDB(SqlDB):
now = int(time.time())
for payload in payloads:
short_channel_id = ShortChannelID(payload['short_channel_id'])
timestamp = int.from_bytes(payload['timestamp'], "big")
timestamp = payload['timestamp']
if max_age and now - timestamp > max_age:
expired.append(payload)
continue
@ -408,7 +408,7 @@ class ChannelDB(SqlDB):
known.append(payload)
# compare updates to existing database entries
for payload in known:
timestamp = int.from_bytes(payload['timestamp'], "big")
timestamp = payload['timestamp']
start_node = payload['start_node']
short_channel_id = ShortChannelID(payload['short_channel_id'])
key = (start_node, short_channel_id)
@ -673,7 +673,7 @@ class ChannelDB(SqlDB):
return
now = int(time.time())
remote_update_decoded = decode_msg(remote_update_raw)[1]
remote_update_decoded['timestamp'] = now.to_bytes(4, byteorder="big")
remote_update_decoded['timestamp'] = now
remote_update_decoded['start_node'] = node_id
return Policy.from_msg(remote_update_decoded)
elif node_id == chan.get_local_pubkey(): # outgoing direction (from us)

12
electrum/lnchannel.py
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@ -218,13 +218,13 @@ class Channel(Logger):
short_channel_id=self.short_channel_id,
channel_flags=channel_flags,
message_flags=b'\x01',
cltv_expiry_delta=lnutil.NBLOCK_OUR_CLTV_EXPIRY_DELTA.to_bytes(2, byteorder="big"),
htlc_minimum_msat=self.config[REMOTE].htlc_minimum_msat.to_bytes(8, byteorder="big"),
htlc_maximum_msat=htlc_maximum_msat.to_bytes(8, byteorder="big"),
fee_base_msat=lnutil.OUR_FEE_BASE_MSAT.to_bytes(4, byteorder="big"),
fee_proportional_millionths=lnutil.OUR_FEE_PROPORTIONAL_MILLIONTHS.to_bytes(4, byteorder="big"),
cltv_expiry_delta=lnutil.NBLOCK_OUR_CLTV_EXPIRY_DELTA,
htlc_minimum_msat=self.config[REMOTE].htlc_minimum_msat,
htlc_maximum_msat=htlc_maximum_msat,
fee_base_msat=lnutil.OUR_FEE_BASE_MSAT,
fee_proportional_millionths=lnutil.OUR_FEE_PROPORTIONAL_MILLIONTHS,
chain_hash=constants.net.rev_genesis_bytes(),
timestamp=now.to_bytes(4, byteorder="big"),
timestamp=now,
)
sighash = sha256d(chan_upd[2 + 64:])
sig = ecc.ECPrivkey(self.lnworker.node_keypair.privkey).sign(sighash, ecc.sig_string_from_r_and_s)

17
electrum/lnmsg.py
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@ -1,7 +1,7 @@
import os
import csv
import io
from typing import Callable, Tuple, Any, Dict, List, Sequence, Union
from typing import Callable, Tuple, Any, Dict, List, Sequence, Union, Optional
class MalformedMsg(Exception):
@ -24,8 +24,7 @@ def _assert_can_read_at_least_n_bytes(fd: io.BytesIO, n: int) -> None:
raise UnexpectedEndOfStream(f"cur_pos={cur_pos}. end_pos={end_pos}. wants to read: {n}")
# TODO return int when it makes sense
def _read_field(*, fd: io.BytesIO, field_type: str, count: int) -> bytes:
def _read_field(*, fd: io.BytesIO, field_type: str, count: int) -> Union[bytes, int]:
if not fd: raise Exception()
assert isinstance(count, int) and count >= 0, f"{count!r} must be non-neg int"
if count == 0:
@ -35,10 +34,19 @@ def _read_field(*, fd: io.BytesIO, field_type: str, count: int) -> bytes:
type_len = 1
elif field_type == 'u16':
type_len = 2
assert count == 1, count
_assert_can_read_at_least_n_bytes(fd, type_len)
return int.from_bytes(fd.read(type_len), byteorder="big", signed=False)
elif field_type == 'u32':
type_len = 4
assert count == 1, count
_assert_can_read_at_least_n_bytes(fd, type_len)
return int.from_bytes(fd.read(type_len), byteorder="big", signed=False)
elif field_type == 'u64':
type_len = 8
assert count == 1, count
_assert_can_read_at_least_n_bytes(fd, type_len)
return int.from_bytes(fd.read(type_len), byteorder="big", signed=False)
# TODO tu16/tu32/tu64
elif field_type == 'chain_hash':
type_len = 32
@ -203,7 +211,8 @@ class LNSerializer:
try:
field_count = int(field_count_str)
except ValueError:
field_count = int.from_bytes(parsed[field_count_str], byteorder="big")
field_count = parsed[field_count_str]
assert isinstance(field_count, int)
#print(f">> count={field_count}. parsed={parsed}")
try:
parsed[field_name] = _read_field(fd=fd,

57
electrum/lnpeer.py
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@ -180,7 +180,7 @@ class Peer(Logger):
self.ordered_message_queues[chan_id].put_nowait((None, {'error':payload['data']}))
def on_ping(self, payload):
l = int.from_bytes(payload['num_pong_bytes'], 'big')
l = payload['num_pong_bytes']
self.send_message('pong', byteslen=l)
def on_pong(self, payload):
@ -417,8 +417,8 @@ class Peer(Logger):
return ids
def on_reply_channel_range(self, payload):
first = int.from_bytes(payload['first_blocknum'], 'big')
num = int.from_bytes(payload['number_of_blocks'], 'big')
first = payload['first_blocknum']
num = payload['number_of_blocks']
complete = bool(int.from_bytes(payload['complete'], 'big'))
encoded = payload['encoded_short_ids']
ids = self.decode_short_ids(encoded)
@ -541,27 +541,27 @@ class Peer(Logger):
)
payload = await self.wait_for_message('accept_channel', temp_channel_id)
remote_per_commitment_point = payload['first_per_commitment_point']
funding_txn_minimum_depth = int.from_bytes(payload['minimum_depth'], 'big')
funding_txn_minimum_depth = payload['minimum_depth']
if funding_txn_minimum_depth <= 0:
raise Exception(f"minimum depth too low, {funding_txn_minimum_depth}")
if funding_txn_minimum_depth > 30:
raise Exception(f"minimum depth too high, {funding_txn_minimum_depth}")
remote_dust_limit_sat = int.from_bytes(payload['dust_limit_satoshis'], byteorder='big')
remote_dust_limit_sat = payload['dust_limit_satoshis']
remote_reserve_sat = self.validate_remote_reserve(payload["channel_reserve_satoshis"], remote_dust_limit_sat, funding_sat)
if remote_dust_limit_sat > remote_reserve_sat:
raise Exception(f"Remote Lightning peer reports dust_limit_sat > reserve_sat which is a BOLT-02 protocol violation.")
htlc_min = int.from_bytes(payload['htlc_minimum_msat'], 'big')
htlc_min = payload['htlc_minimum_msat']
if htlc_min > MAXIMUM_HTLC_MINIMUM_MSAT_ACCEPTED:
raise Exception(f"Remote Lightning peer reports htlc_minimum_msat={htlc_min} mSAT," +
f" which is above Electrums required maximum limit of that parameter ({MAXIMUM_HTLC_MINIMUM_MSAT_ACCEPTED} mSAT).")
remote_max = int.from_bytes(payload['max_htlc_value_in_flight_msat'], 'big')
remote_max = payload['max_htlc_value_in_flight_msat']
if remote_max < MINIMUM_MAX_HTLC_VALUE_IN_FLIGHT_ACCEPTED:
raise Exception(f"Remote Lightning peer reports max_htlc_value_in_flight_msat at only {remote_max} mSAT" +
f" which is below Electrums required minimum ({MINIMUM_MAX_HTLC_VALUE_IN_FLIGHT_ACCEPTED} mSAT).")
max_accepted_htlcs = int.from_bytes(payload["max_accepted_htlcs"], 'big')
max_accepted_htlcs = payload["max_accepted_htlcs"]
if max_accepted_htlcs > 483:
raise Exception("Remote Lightning peer reports max_accepted_htlcs > 483, which is a BOLT-02 protocol violation.")
remote_to_self_delay = int.from_bytes(payload['to_self_delay'], byteorder='big')
remote_to_self_delay = payload['to_self_delay']
if remote_to_self_delay > MAXIMUM_REMOTE_TO_SELF_DELAY_ACCEPTED:
raise Exception(f"Remote Lightning peer reports to_self_delay={remote_to_self_delay}," +
f" which is above Electrums required maximum ({MAXIMUM_REMOTE_TO_SELF_DELAY_ACCEPTED})")
@ -647,9 +647,9 @@ class Peer(Logger):
# payload['channel_flags']
if payload['chain_hash'] != constants.net.rev_genesis_bytes():
raise Exception('wrong chain_hash')
funding_sat = int.from_bytes(payload['funding_satoshis'], 'big')
push_msat = int.from_bytes(payload['push_msat'], 'big')
feerate = int.from_bytes(payload['feerate_per_kw'], 'big')
funding_sat = payload['funding_satoshis']
push_msat = payload['push_msat']
feerate = payload['feerate_per_kw']
temp_chan_id = payload['temporary_channel_id']
local_config = self.make_local_config(funding_sat, push_msat, REMOTE)
# for the first commitment transaction
@ -674,11 +674,11 @@ class Peer(Logger):
first_per_commitment_point=per_commitment_point_first,
)
funding_created = await self.wait_for_message('funding_created', temp_chan_id)
funding_idx = int.from_bytes(funding_created['funding_output_index'], 'big')
funding_idx = funding_created['funding_output_index']
funding_txid = bh2u(funding_created['funding_txid'][::-1])
channel_id, funding_txid_bytes = channel_id_from_funding_tx(funding_txid, funding_idx)
remote_balance_sat = funding_sat * 1000 - push_msat
remote_dust_limit_sat = int.from_bytes(payload['dust_limit_satoshis'], byteorder='big') # TODO validate
remote_dust_limit_sat = payload['dust_limit_satoshis'] # TODO validate
remote_reserve_sat = self.validate_remote_reserve(payload['channel_reserve_satoshis'], remote_dust_limit_sat, funding_sat)
remote_config = RemoteConfig(
payment_basepoint=OnlyPubkeyKeypair(payload['payment_basepoint']),
@ -686,13 +686,13 @@ class Peer(Logger):
htlc_basepoint=OnlyPubkeyKeypair(payload['htlc_basepoint']),
delayed_basepoint=OnlyPubkeyKeypair(payload['delayed_payment_basepoint']),
revocation_basepoint=OnlyPubkeyKeypair(payload['revocation_basepoint']),
to_self_delay=int.from_bytes(payload['to_self_delay'], 'big'),
to_self_delay=payload['to_self_delay'],
dust_limit_sat=remote_dust_limit_sat,
max_htlc_value_in_flight_msat=int.from_bytes(payload['max_htlc_value_in_flight_msat'], 'big'), # TODO validate
max_accepted_htlcs=int.from_bytes(payload['max_accepted_htlcs'], 'big'), # TODO validate
max_htlc_value_in_flight_msat=payload['max_htlc_value_in_flight_msat'], # TODO validate
max_accepted_htlcs=payload['max_accepted_htlcs'], # TODO validate
initial_msat=remote_balance_sat,
reserve_sat = remote_reserve_sat,
htlc_minimum_msat=int.from_bytes(payload['htlc_minimum_msat'], 'big'), # TODO validate
htlc_minimum_msat=payload['htlc_minimum_msat'], # TODO validate
next_per_commitment_point=payload['first_per_commitment_point'],
current_per_commitment_point=None,
)
@ -718,8 +718,7 @@ class Peer(Logger):
chan.set_state(channel_states.OPENING)
self.lnworker.add_new_channel(chan)
def validate_remote_reserve(self, payload_field: bytes, dust_limit: int, funding_sat: int) -> int:
remote_reserve_sat = int.from_bytes(payload_field, 'big')
def validate_remote_reserve(self, remote_reserve_sat: int, dust_limit: int, funding_sat: int) -> int:
if remote_reserve_sat < dust_limit:
raise Exception('protocol violation: reserve < dust_limit')
if remote_reserve_sat > funding_sat/100:
@ -768,8 +767,8 @@ class Peer(Logger):
f'(next_local_ctn={next_local_ctn}, '
f'oldest_unrevoked_remote_ctn={oldest_unrevoked_remote_ctn})')
msg = await self.wait_for_message('channel_reestablish', chan_id)
their_next_local_ctn = int.from_bytes(msg["next_commitment_number"], 'big')
their_oldest_unrevoked_remote_ctn = int.from_bytes(msg["next_revocation_number"], 'big')
their_next_local_ctn = msg["next_commitment_number"]
their_oldest_unrevoked_remote_ctn = msg["next_revocation_number"]
their_local_pcp = msg.get("my_current_per_commitment_point")
their_claim_of_our_last_per_commitment_secret = msg.get("your_last_per_commitment_secret")
self.logger.info(f'channel_reestablish ({chan.get_id_for_log()}): received channel_reestablish with '
@ -1005,7 +1004,7 @@ class Peer(Logger):
return msg_hash, node_signature, bitcoin_signature
def on_update_fail_htlc(self, chan: Channel, payload):
htlc_id = int.from_bytes(payload["id"], "big")
htlc_id = payload["id"]
reason = payload["reason"]
self.logger.info(f"on_update_fail_htlc. chan {chan.short_channel_id}. htlc_id {htlc_id}")
chan.receive_fail_htlc(htlc_id, error_bytes=reason) # TODO handle exc and maybe fail channel (e.g. bad htlc_id)
@ -1083,7 +1082,7 @@ class Peer(Logger):
def on_update_fulfill_htlc(self, chan: Channel, payload):
preimage = payload["payment_preimage"]
payment_hash = sha256(preimage)
htlc_id = int.from_bytes(payload["id"], "big")
htlc_id = payload["id"]
self.logger.info(f"on_update_fulfill_htlc. chan {chan.short_channel_id}. htlc_id {htlc_id}")
chan.receive_htlc_settle(preimage, htlc_id) # TODO handle exc and maybe fail channel (e.g. bad htlc_id)
self.lnworker.save_preimage(payment_hash, preimage)
@ -1103,10 +1102,10 @@ class Peer(Logger):
def on_update_add_htlc(self, chan: Channel, payload):
payment_hash = payload["payment_hash"]
htlc_id = int.from_bytes(payload["id"], 'big')
htlc_id = payload["id"]
self.logger.info(f"on_update_add_htlc. chan {chan.short_channel_id}. htlc_id {htlc_id}")
cltv_expiry = int.from_bytes(payload["cltv_expiry"], 'big')
amount_msat_htlc = int.from_bytes(payload["amount_msat"], 'big')
cltv_expiry = payload["cltv_expiry"]
amount_msat_htlc = payload["amount_msat"]
onion_packet = payload["onion_routing_packet"]
if chan.get_state() != channel_states.OPEN:
raise RemoteMisbehaving(f"received update_add_htlc while chan.get_state() != OPEN. state was {chan.get_state()}")
@ -1258,7 +1257,7 @@ class Peer(Logger):
self.maybe_send_commitment(chan)
def on_update_fee(self, chan: Channel, payload):
feerate = int.from_bytes(payload["feerate_per_kw"], "big")
feerate = payload["feerate_per_kw"]
chan.update_fee(feerate, False)
async def maybe_update_fee(self, chan: Channel):
@ -1378,7 +1377,7 @@ class Peer(Logger):
while True:
# FIXME: the remote SHOULD send closing_signed, but some don't.
cs_payload = await self.wait_for_message('closing_signed', chan.channel_id)
their_fee = int.from_bytes(cs_payload['fee_satoshis'], 'big')
their_fee = cs_payload['fee_satoshis']
if their_fee > max_fee:
raise Exception(f'the proposed fee exceeds the base fee of the latest commitment transaction {is_local, their_fee, max_fee}')
their_sig = cs_payload['signature']

37
electrum/tests/test_lnrouter.py
Unescape View File

@ -57,46 +57,45 @@ class Test_LNRouter(TestCaseForTestnet):
'bitcoin_key_1': b'\x02bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb', 'bitcoin_key_2': b'\x02cccccccccccccccccccccccccccccccc',
'short_channel_id': bfh('0000000000000001'),
'chain_hash': BitcoinTestnet.rev_genesis_bytes(),
'len': b'\x00\x00', 'features': b''}, trusted=True)
'len': 0, 'features': b''}, trusted=True)
self.assertEqual(cdb.num_channels, 1)
cdb.add_channel_announcement({'node_id_1': b'\x02bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb', 'node_id_2': b'\x02eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee',
'bitcoin_key_1': b'\x02bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb', 'bitcoin_key_2': b'\x02eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee',
'short_channel_id': bfh('0000000000000002'),
'chain_hash': BitcoinTestnet.rev_genesis_bytes(),
'len': b'\x00\x00', 'features': b''}, trusted=True)
'len': 0, 'features': b''}, trusted=True)
cdb.add_channel_announcement({'node_id_1': b'\x02aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa', 'node_id_2': b'\x02bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
'bitcoin_key_1': b'\x02aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa', 'bitcoin_key_2': b'\x02bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb',
'short_channel_id': bfh('0000000000000003'),
'chain_hash': BitcoinTestnet.rev_genesis_bytes(),
'len': b'\x00\x00', 'features': b''}, trusted=True)
'len': 0, 'features': b''}, trusted=True)
cdb.add_channel_announcement({'node_id_1': b'\x02cccccccccccccccccccccccccccccccc', 'node_id_2': b'\x02dddddddddddddddddddddddddddddddd',
'bitcoin_key_1': b'\x02cccccccccccccccccccccccccccccccc', 'bitcoin_key_2': b'\x02dddddddddddddddddddddddddddddddd',
'short_channel_id': bfh('0000000000000004'),
'chain_hash': BitcoinTestnet.rev_genesis_bytes(),
'len': b'\x00\x00', 'features': b''}, trusted=True)
'len': 0, 'features': b''}, trusted=True)
cdb.add_channel_announcement({'node_id_1': b'\x02dddddddddddddddddddddddddddddddd', 'node_id_2': b'\x02eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee',
'bitcoin_key_1': b'\x02dddddddddddddddddddddddddddddddd', 'bitcoin_key_2': b'\x02eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee',
'short_channel_id': bfh('0000000000000005'),
'chain_hash': BitcoinTestnet.rev_genesis_bytes(),
'len': b'\x00\x00', 'features': b''}, trusted=True)
'len': 0, 'features': b''}, trusted=True)
cdb.add_channel_announcement({'node_id_1': b'\x02aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa', 'node_id_2': b'\x02dddddddddddddddddddddddddddddddd',
'bitcoin_key_1': b'\x02aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa', 'bitcoin_key_2': b'\x02dddddddddddddddddddddddddddddddd',
'short_channel_id': bfh('0000000000000006'),
'chain_hash': BitcoinTestnet.rev_genesis_bytes(),
'len': b'\x00\x00', 'features': b''}, trusted=True)
o = lambda i: i.to_bytes(8, "big")
cdb.add_channel_update({'short_channel_id': bfh('0000000000000001'), 'message_flags': b'\x00', 'channel_flags': b'\x00', 'cltv_expiry_delta': o(10), 'htlc_minimum_msat': o(250), 'fee_base_msat': o(100), 'fee_proportional_millionths': o(150), 'chain_hash': BitcoinTestnet.rev_genesis_bytes(), 'timestamp': b'\x00\x00\x00\x00'})
cdb.add_channel_update({'short_channel_id': bfh('0000000000000001'), 'message_flags': b'\x00', 'channel_flags': b'\x01', 'cltv_expiry_delta': o(10), 'htlc_minimum_msat': o(250), 'fee_base_msat': o(100), 'fee_proportional_millionths': o(150), 'chain_hash': BitcoinTestnet.rev_genesis_bytes(), 'timestamp': b'\x00\x00\x00\x00'})
cdb.add_channel_update({'short_channel_id': bfh('0000000000000002'), 'message_flags': b'\x00', 'channel_flags': b'\x00', 'cltv_expiry_delta': o(99), 'htlc_minimum_msat': o(250), 'fee_base_msat': o(100), 'fee_proportional_millionths': o(150), 'chain_hash': BitcoinTestnet.rev_genesis_bytes(), 'timestamp': b'\x00\x00\x00\x00'})
cdb.add_channel_update({'short_channel_id': bfh('0000000000000002'), 'message_flags': b'\x00', 'channel_flags': b'\x01', 'cltv_expiry_delta': o(10), 'htlc_minimum_msat': o(250), 'fee_base_msat': o(100), 'fee_proportional_millionths': o(150), 'chain_hash': BitcoinTestnet.rev_genesis_bytes(), 'timestamp': b'\x00\x00\x00\x00'})
cdb.add_channel_update({'short_channel_id': bfh('0000000000000003'), 'message_flags': b'\x00', 'channel_flags': b'\x01', 'cltv_expiry_delta': o(10), 'htlc_minimum_msat': o(250), 'fee_base_msat': o(100), 'fee_proportional_millionths': o(150), 'chain_hash': BitcoinTestnet.rev_genesis_bytes(), 'timestamp': b'\x00\x00\x00\x00'})
cdb.add_channel_update({'short_channel_id': bfh('0000000000000003'), 'message_flags': b'\x00', 'channel_flags': b'\x00', 'cltv_expiry_delta': o(10), 'htlc_minimum_msat': o(250), 'fee_base_msat': o(100), 'fee_proportional_millionths': o(150), 'chain_hash': BitcoinTestnet.rev_genesis_bytes(), 'timestamp': b'\x00\x00\x00\x00'})
cdb.add_channel_update({'short_channel_id': bfh('0000000000000004'), 'message_flags': b'\x00', 'channel_flags': b'\x01', 'cltv_expiry_delta': o(10), 'htlc_minimum_msat': o(250), 'fee_base_msat': o(100), 'fee_proportional_millionths': o(150), 'chain_hash': BitcoinTestnet.rev_genesis_bytes(), 'timestamp': b'\x00\x00\x00\x00'})
cdb.add_channel_update({'short_channel_id': bfh('0000000000000004'), 'message_flags': b'\x00', 'channel_flags': b'\x00', 'cltv_expiry_delta': o(10), 'htlc_minimum_msat': o(250), 'fee_base_msat': o(100), 'fee_proportional_millionths': o(150), 'chain_hash': BitcoinTestnet.rev_genesis_bytes(), 'timestamp': b'\x00\x00\x00\x00'})
cdb.add_channel_update({'short_channel_id': bfh('0000000000000005'), 'message_flags': b'\x00', 'channel_flags': b'\x01', 'cltv_expiry_delta': o(10), 'htlc_minimum_msat': o(250), 'fee_base_msat': o(100), 'fee_proportional_millionths': o(150), 'chain_hash': BitcoinTestnet.rev_genesis_bytes(), 'timestamp': b'\x00\x00\x00\x00'})
cdb.add_channel_update({'short_channel_id': bfh('0000000000000005'), 'message_flags': b'\x00', 'channel_flags': b'\x00', 'cltv_expiry_delta': o(10), 'htlc_minimum_msat': o(250), 'fee_base_msat': o(100), 'fee_proportional_millionths': o(999), 'chain_hash': BitcoinTestnet.rev_genesis_bytes(), 'timestamp': b'\x00\x00\x00\x00'})
cdb.add_channel_update({'short_channel_id': bfh('0000000000000006'), 'message_flags': b'\x00', 'channel_flags': b'\x00', 'cltv_expiry_delta': o(10), 'htlc_minimum_msat': o(250), 'fee_base_msat': o(100), 'fee_proportional_millionths': o(99999999), 'chain_hash': BitcoinTestnet.rev_genesis_bytes(), 'timestamp': b'\x00\x00\x00\x00'})
cdb.add_channel_update({'short_channel_id': bfh('0000000000000006'), 'message_flags': b'\x00', 'channel_flags': b'\x01', 'cltv_expiry_delta': o(10), 'htlc_minimum_msat': o(250), 'fee_base_msat': o(100), 'fee_proportional_millionths': o(150), 'chain_hash': BitcoinTestnet.rev_genesis_bytes(), 'timestamp': b'\x00\x00\x00\x00'})
'len': 0, 'features': b''}, trusted=True)
cdb.add_channel_update({'short_channel_id': bfh('0000000000000001'), 'message_flags': b'\x00', 'channel_flags': b'\x00', 'cltv_expiry_delta': 10, 'htlc_minimum_msat': 250, 'fee_base_msat': 100, 'fee_proportional_millionths': 150, 'chain_hash': BitcoinTestnet.rev_genesis_bytes(), 'timestamp': 0})
cdb.add_channel_update({'short_channel_id': bfh('0000000000000001'), 'message_flags': b'\x00', 'channel_flags': b'\x01', 'cltv_expiry_delta': 10, 'htlc_minimum_msat': 250, 'fee_base_msat': 100, 'fee_proportional_millionths': 150, 'chain_hash': BitcoinTestnet.rev_genesis_bytes(), 'timestamp': 0})
cdb.add_channel_update({'short_channel_id': bfh('0000000000000002'), 'message_flags': b'\x00', 'channel_flags': b'\x00', 'cltv_expiry_delta': 99, 'htlc_minimum_msat': 250, 'fee_base_msat': 100, 'fee_proportional_millionths': 150, 'chain_hash': BitcoinTestnet.rev_genesis_bytes(), 'timestamp': 0})
cdb.add_channel_update({'short_channel_id': bfh('0000000000000002'), 'message_flags': b'\x00', 'channel_flags': b'\x01', 'cltv_expiry_delta': 10, 'htlc_minimum_msat': 250, 'fee_base_msat': 100, 'fee_proportional_millionths': 150, 'chain_hash': BitcoinTestnet.rev_genesis_bytes(), 'timestamp': 0})
cdb.add_channel_update({'short_channel_id': bfh('0000000000000003'), 'message_flags': b'\x00', 'channel_flags': b'\x01', 'cltv_expiry_delta': 10, 'htlc_minimum_msat': 250, 'fee_base_msat': 100, 'fee_proportional_millionths': 150, 'chain_hash': BitcoinTestnet.rev_genesis_bytes(), 'timestamp': 0})
cdb.add_channel_update({'short_channel_id': bfh('0000000000000003'), 'message_flags': b'\x00', 'channel_flags': b'\x00', 'cltv_expiry_delta': 10, 'htlc_minimum_msat': 250, 'fee_base_msat': 100, 'fee_proportional_millionths': 150, 'chain_hash': BitcoinTestnet.rev_genesis_bytes(), 'timestamp': 0})
cdb.add_channel_update({'short_channel_id': bfh('0000000000000004'), 'message_flags': b'\x00', 'channel_flags': b'\x01', 'cltv_expiry_delta': 10, 'htlc_minimum_msat': 250, 'fee_base_msat': 100, 'fee_proportional_millionths': 150, 'chain_hash': BitcoinTestnet.rev_genesis_bytes(), 'timestamp': 0})
cdb.add_channel_update({'short_channel_id': bfh('0000000000000004'), 'message_flags': b'\x00', 'channel_flags': b'\x00', 'cltv_expiry_delta': 10, 'htlc_minimum_msat': 250, 'fee_base_msat': 100, 'fee_proportional_millionths': 150, 'chain_hash': BitcoinTestnet.rev_genesis_bytes(), 'timestamp': 0})
cdb.add_channel_update({'short_channel_id': bfh('0000000000000005'), 'message_flags': b'\x00', 'channel_flags': b'\x01', 'cltv_expiry_delta': 10, 'htlc_minimum_msat': 250, 'fee_base_msat': 100, 'fee_proportional_millionths': 150, 'chain_hash': BitcoinTestnet.rev_genesis_bytes(), 'timestamp': 0})
cdb.add_channel_update({'short_channel_id': bfh('0000000000000005'), 'message_flags': b'\x00', 'channel_flags': b'\x00', 'cltv_expiry_delta': 10, 'htlc_minimum_msat': 250, 'fee_base_msat': 100, 'fee_proportional_millionths': 999, 'chain_hash': BitcoinTestnet.rev_genesis_bytes(), 'timestamp': 0})
cdb.add_channel_update({'short_channel_id': bfh('0000000000000006'), 'message_flags': b'\x00', 'channel_flags': b'\x00', 'cltv_expiry_delta': 10, 'htlc_minimum_msat': 250, 'fee_base_msat': 100, 'fee_proportional_millionths': 99999999, 'chain_hash': BitcoinTestnet.rev_genesis_bytes(), 'timestamp': 0})
cdb.add_channel_update({'short_channel_id': bfh('0000000000000006'), 'message_flags': b'\x00', 'channel_flags': b'\x01', 'cltv_expiry_delta': 10, 'htlc_minimum_msat': 250, 'fee_base_msat': 100, 'fee_proportional_millionths': 150, 'chain_hash': BitcoinTestnet.rev_genesis_bytes(), 'timestamp': 0})
path = path_finder.find_path_for_payment(b'\x02aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa', b'\x02eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee', 100000)
self.assertEqual([(b'\x02bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb', b'\x00\x00\x00\x00\x00\x00\x00\x03'),
(b'\x02eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee', b'\x00\x00\x00\x00\x00\x00\x00\x02'),

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