electrum

Electrum Bitcoin wallet
git clone https://git.parazyd.org/electrum
Log | Files | Refs | Submodules

commit 730be17aba20e0c799b1aaf6c577761a6105ea5b
parent 12743bda93179e34f9da31f26c631780c324a091
Author: ThomasV <thomasv@electrum.org>
Date:   Fri, 26 Apr 2019 12:48:02 +0200

Use separate lightning nodes for gossip and channel operations.

Diffstat:
Melectrum/lnpeer.py | 5+----
Melectrum/lnworker.py | 361++++++++++++++++++++++++++++++++++++++++++-------------------------------------
Melectrum/network.py | 4++++
Melectrum/tests/test_lnpeer.py | 27++++++++++++++-------------
Melectrum/wallet.py | 4++--
5 files changed, 215 insertions(+), 186 deletions(-)

diff --git a/electrum/lnpeer.py b/electrum/lnpeer.py @@ -63,6 +63,7 @@ class Peer(PrintError): self.pubkey = pubkey self.lnworker = lnworker self.privkey = lnworker.node_keypair.privkey + self.localfeatures = self.lnworker.localfeatures self.node_ids = [self.pubkey, privkey_to_pubkey(self.privkey)] self.network = lnworker.network self.lnwatcher = lnworker.network.lnwatcher @@ -76,10 +77,6 @@ class Peer(PrintError): self.announcement_signatures = defaultdict(asyncio.Queue) self.closing_signed = defaultdict(asyncio.Queue) self.payment_preimages = defaultdict(asyncio.Queue) - self.localfeatures = LnLocalFeatures(0) - self.localfeatures |= LnLocalFeatures.GOSSIP_QUERIES_REQ - #self.localfeatures |= LnLocalFeatures.OPTION_DATA_LOSS_PROTECT_REQ - #self.localfeatures |= LnLocalFeatures.OPTION_DATA_LOSS_PROTECT_OPT self.attempted_route = {} self.orphan_channel_updates = OrderedDict() self.sent_commitment_for_ctn_last = defaultdict(lambda: None) # type: Dict[Channel, Optional[int]] diff --git a/electrum/lnworker.py b/electrum/lnworker.py @@ -39,7 +39,7 @@ from .lnutil import (Outpoint, calc_short_channel_id, LNPeerAddr, generate_keypair, LnKeyFamily, LOCAL, REMOTE, UnknownPaymentHash, MIN_FINAL_CLTV_EXPIRY_FOR_INVOICE, NUM_MAX_EDGES_IN_PAYMENT_PATH, SENT, RECEIVED, HTLCOwner, - UpdateAddHtlc, Direction) + UpdateAddHtlc, Direction, LnLocalFeatures) from .i18n import _ from .lnrouter import RouteEdge, is_route_sane_to_use from .address_synchronizer import TX_HEIGHT_LOCAL @@ -74,16 +74,178 @@ encoder = ChannelJsonEncoder() class LNWorker(PrintError): + def __init__(self, xprv): + self.node_keypair = generate_keypair(keystore.from_xprv(xprv), LnKeyFamily.NODE_KEY, 0) + self.peers = {} # type: Dict[bytes, Peer] # pubkey -> Peer + self.localfeatures = LnLocalFeatures(0) + + async def maybe_listen(self): + listen_addr = self.config.get('lightning_listen') + if listen_addr: + addr, port = listen_addr.rsplit(':', 2) + if addr[0] == '[': + # ipv6 + addr = addr[1:-1] + async def cb(reader, writer): + transport = LNResponderTransport(self.node_keypair.privkey, reader, writer) + try: + node_id = await transport.handshake() + except: + self.print_error('handshake failure from incoming connection') + return + peer = Peer(self, node_id, transport) + self.peers[node_id] = peer + await self.network.main_taskgroup.spawn(peer.main_loop()) + self.network.trigger_callback('ln_status') + await asyncio.start_server(cb, addr, int(port)) + + async def main_loop(self): + while True: + await asyncio.sleep(1) + now = time.time() + if len(self.peers) >= NUM_PEERS_TARGET: + continue + peers = self._get_next_peers_to_try() + for peer in peers: + last_tried = self._last_tried_peer.get(peer, 0) + if last_tried + PEER_RETRY_INTERVAL < now: + await self.add_peer(peer.host, peer.port, peer.pubkey) + + async def add_peer(self, host, port, node_id): + if node_id in self.peers: + return self.peers[node_id] + port = int(port) + peer_addr = LNPeerAddr(host, port, node_id) + transport = LNTransport(self.node_keypair.privkey, peer_addr) + self._last_tried_peer[peer_addr] = time.time() + self.print_error("adding peer", peer_addr) + peer = Peer(self, node_id, transport) + await self.network.main_taskgroup.spawn(peer.main_loop()) + self.peers[node_id] = peer + self.network.trigger_callback('ln_status') + return peer + + def start_network(self, network: 'Network'): + self.network = network + self.config = network.config + self.channel_db = self.network.channel_db + self._last_tried_peer = {} # LNPeerAddr -> unix timestamp + self._add_peers_from_config() + # wait until we see confirmations + asyncio.run_coroutine_threadsafe(self.network.main_taskgroup.spawn(self.main_loop()), self.network.asyncio_loop) + self.first_timestamp_requested = None + + def _add_peers_from_config(self): + peer_list = self.config.get('lightning_peers', []) + for host, port, pubkey in peer_list: + asyncio.run_coroutine_threadsafe( + self.add_peer(host, int(port), bfh(pubkey)), + self.network.asyncio_loop) + + def _get_next_peers_to_try(self) -> Sequence[LNPeerAddr]: + now = time.time() + recent_peers = self.channel_db.get_recent_peers() + # maintenance for last tried times + # due to this, below we can just test membership in _last_tried_peer + for peer in list(self._last_tried_peer): + if now >= self._last_tried_peer[peer] + PEER_RETRY_INTERVAL: + del self._last_tried_peer[peer] + # first try from recent peers + for peer in recent_peers: + if peer.pubkey in self.peers: continue + if peer in self._last_tried_peer: continue + return [peer] + # try random peer from graph + unconnected_nodes = self.channel_db.get_200_randomly_sorted_nodes_not_in(self.peers.keys()) + if unconnected_nodes: + for node in unconnected_nodes: + addrs = self.channel_db.get_node_addresses(node) + if not addrs: + continue + host, port = self.choose_preferred_address(addrs) + peer = LNPeerAddr(host, port, bytes.fromhex(node.node_id)) + if peer in self._last_tried_peer: continue + self.print_error('taking random ln peer from our channel db') + return [peer] + + # TODO remove this. For some reason the dns seeds seem to ignore the realm byte + # and only return mainnet nodes. so for the time being dns seeding is disabled: + if constants.net in (constants.BitcoinTestnet, ): + return [random.choice(FALLBACK_NODE_LIST_TESTNET)] + elif constants.net in (constants.BitcoinMainnet, ): + return [random.choice(FALLBACK_NODE_LIST_MAINNET)] + else: + return [] + + # try peers from dns seed. + # return several peers to reduce the number of dns queries. + if not constants.net.LN_DNS_SEEDS: + return [] + dns_seed = random.choice(constants.net.LN_DNS_SEEDS) + self.print_error('asking dns seed "{}" for ln peers'.format(dns_seed)) + try: + # note: this might block for several seconds + # this will include bech32-encoded-pubkeys and ports + srv_answers = resolve_dns_srv('r{}.{}'.format( + constants.net.LN_REALM_BYTE, dns_seed)) + except dns.exception.DNSException as e: + return [] + random.shuffle(srv_answers) + num_peers = 2 * NUM_PEERS_TARGET + srv_answers = srv_answers[:num_peers] + # we now have pubkeys and ports but host is still needed + peers = [] + for srv_ans in srv_answers: + try: + # note: this might block for several seconds + answers = dns.resolver.query(srv_ans['host']) + except dns.exception.DNSException: + continue + try: + ln_host = str(answers[0]) + port = int(srv_ans['port']) + bech32_pubkey = srv_ans['host'].split('.')[0] + pubkey = get_compressed_pubkey_from_bech32(bech32_pubkey) + peers.append(LNPeerAddr(ln_host, port, pubkey)) + except Exception as e: + self.print_error('error with parsing peer from dns seed: {}'.format(e)) + continue + self.print_error('got {} ln peers from dns seed'.format(len(peers))) + return peers + + + +class LNGossip(LNWorker): + + def __init__(self, network): + seed = os.urandom(32) + node = BIP32Node.from_rootseed(seed, xtype='standard') + xprv = node.to_xprv() + super().__init__(xprv) + self.localfeatures |= LnLocalFeatures.GOSSIP_QUERIES_REQ + + +class LNWallet(LNWorker): + def __init__(self, wallet: 'Abstract_Wallet'): self.wallet = wallet self.storage = wallet.storage + xprv = self.storage.get('lightning_privkey2') + if xprv is None: + # TODO derive this deterministically from wallet.keystore at keystore generation time + # probably along a hardened path ( lnd-equivalent would be m/1017'/coinType'/ ) + seed = os.urandom(32) + node = BIP32Node.from_rootseed(seed, xtype='standard') + xprv = node.to_xprv() + self.storage.put('lightning_privkey2', xprv) + super().__init__(xprv) + self.ln_keystore = keystore.from_xprv(xprv) + #self.localfeatures |= LnLocalFeatures.OPTION_DATA_LOSS_PROTECT_REQ + #self.localfeatures |= LnLocalFeatures.OPTION_DATA_LOSS_PROTECT_OPT self.invoices = self.storage.get('lightning_invoices', {}) # RHASH -> (invoice, direction, is_paid) self.preimages = self.storage.get('lightning_preimages', {}) # RHASH -> preimage self.sweep_address = wallet.get_receiving_address() self.lock = threading.RLock() - self.ln_keystore = self._read_ln_keystore() - self.node_keypair = generate_keypair(self.ln_keystore, LnKeyFamily.NODE_KEY, 0) - self.peers = {} # type: Dict[bytes, Peer] # pubkey -> Peer self.channels = {} # type: Dict[bytes, Channel] for x in wallet.storage.get("channels", []): c = Channel(x, sweep_address=self.sweep_address, lnworker=self) @@ -95,19 +257,20 @@ class LNWorker(PrintError): def start_network(self, network: 'Network'): self.network = network - self.config = network.config - self.channel_db = self.network.channel_db - for chan_id, chan in self.channels.items(): - self.network.lnwatcher.add_channel(chan.funding_outpoint.to_str(), chan.get_funding_address()) - chan.lnwatcher = network.lnwatcher - self._last_tried_peer = {} # LNPeerAddr -> unix timestamp - self._add_peers_from_config() - # wait until we see confirmations self.network.register_callback(self.on_network_update, ['wallet_updated', 'network_updated', 'verified', 'fee']) # thread safe self.network.register_callback(self.on_channel_open, ['channel_open']) self.network.register_callback(self.on_channel_closed, ['channel_closed']) - asyncio.run_coroutine_threadsafe(self.network.main_taskgroup.spawn(self.main_loop()), self.network.asyncio_loop) - self.first_timestamp_requested = None + for chan_id, chan in self.channels.items(): + self.network.lnwatcher.add_channel(chan.funding_outpoint.to_str(), chan.get_funding_address()) + chan.lnwatcher = network.lnwatcher + super().start_network(network) + for coro in [ + self.maybe_listen(), + self.on_network_update('network_updated'), # shortcut (don't block) if funding tx locked and verified + self.network.lnwatcher.on_network_update('network_updated'), # ping watcher to check our channels + self.reestablish_peers_and_channels() + ]: + asyncio.run_coroutine_threadsafe(self.network.main_taskgroup.spawn(coro), self.network.asyncio_loop) def payment_completed(self, chan: Channel, direction: Direction, htlc: UpdateAddHtlc): @@ -193,17 +356,6 @@ class LNWorker(PrintError): item['balance_msat'] = balance_msat return out - def _read_ln_keystore(self) -> BIP32_KeyStore: - xprv = self.storage.get('lightning_privkey2') - if xprv is None: - # TODO derive this deterministically from wallet.keystore at keystore generation time - # probably along a hardened path ( lnd-equivalent would be m/1017'/coinType'/ ) - seed = os.urandom(32) - node = BIP32Node.from_rootseed(seed, xtype='standard') - xprv = node.to_xprv() - self.storage.put('lightning_privkey2', xprv) - return keystore.from_xprv(xprv) - def get_and_inc_counter_for_channel_keys(self): with self.lock: ctr = self.storage.get('lightning_channel_key_der_ctr', -1) @@ -212,14 +364,6 @@ class LNWorker(PrintError): self.storage.write() return ctr - def _add_peers_from_config(self): - peer_list = self.config.get('lightning_peers', []) - for host, port, pubkey in peer_list: - asyncio.run_coroutine_threadsafe( - self.add_peer(host, int(port), bfh(pubkey)), - self.network.asyncio_loop) - - def suggest_peer(self): for node_id, peer in self.peers.items(): if not peer.initialized.is_set(): @@ -233,20 +377,6 @@ class LNWorker(PrintError): with self.lock: return {x: y for (x, y) in self.channels.items() if y.node_id == node_id} - async def add_peer(self, host, port, node_id): - if node_id in self.peers: - return self.peers[node_id] - port = int(port) - peer_addr = LNPeerAddr(host, port, node_id) - transport = LNTransport(self.node_keypair.privkey, peer_addr) - self._last_tried_peer[peer_addr] = time.time() - self.print_error("adding peer", peer_addr) - peer = Peer(self, node_id, transport) - await self.network.main_taskgroup.spawn(peer.main_loop()) - self.peers[node_id] = peer - self.network.trigger_callback('ln_status') - return peer - def save_channel(self, openchannel): assert type(openchannel) is Channel if openchannel.config[REMOTE].next_per_commitment_point == openchannel.config[REMOTE].current_per_commitment_point: @@ -692,77 +822,6 @@ class LNWorker(PrintError): await self.network.broadcast_transaction(tx) return tx.txid() - def _get_next_peers_to_try(self) -> Sequence[LNPeerAddr]: - now = time.time() - recent_peers = self.channel_db.get_recent_peers() - # maintenance for last tried times - # due to this, below we can just test membership in _last_tried_peer - for peer in list(self._last_tried_peer): - if now >= self._last_tried_peer[peer] + PEER_RETRY_INTERVAL: - del self._last_tried_peer[peer] - # first try from recent peers - for peer in recent_peers: - if peer.pubkey in self.peers: continue - if peer in self._last_tried_peer: continue - return [peer] - # try random peer from graph - unconnected_nodes = self.channel_db.get_200_randomly_sorted_nodes_not_in(self.peers.keys()) - if unconnected_nodes: - for node in unconnected_nodes: - addrs = self.channel_db.get_node_addresses(node) - if not addrs: - continue - host, port = self.choose_preferred_address(addrs) - peer = LNPeerAddr(host, port, bytes.fromhex(node.node_id)) - if peer in self._last_tried_peer: continue - self.print_error('taking random ln peer from our channel db') - return [peer] - - # TODO remove this. For some reason the dns seeds seem to ignore the realm byte - # and only return mainnet nodes. so for the time being dns seeding is disabled: - if constants.net in (constants.BitcoinTestnet, ): - return [random.choice(FALLBACK_NODE_LIST_TESTNET)] - elif constants.net in (constants.BitcoinMainnet, ): - return [random.choice(FALLBACK_NODE_LIST_MAINNET)] - else: - return [] - - # try peers from dns seed. - # return several peers to reduce the number of dns queries. - if not constants.net.LN_DNS_SEEDS: - return [] - dns_seed = random.choice(constants.net.LN_DNS_SEEDS) - self.print_error('asking dns seed "{}" for ln peers'.format(dns_seed)) - try: - # note: this might block for several seconds - # this will include bech32-encoded-pubkeys and ports - srv_answers = resolve_dns_srv('r{}.{}'.format( - constants.net.LN_REALM_BYTE, dns_seed)) - except dns.exception.DNSException as e: - return [] - random.shuffle(srv_answers) - num_peers = 2 * NUM_PEERS_TARGET - srv_answers = srv_answers[:num_peers] - # we now have pubkeys and ports but host is still needed - peers = [] - for srv_ans in srv_answers: - try: - # note: this might block for several seconds - answers = dns.resolver.query(srv_ans['host']) - except dns.exception.DNSException: - continue - try: - ln_host = str(answers[0]) - port = int(srv_ans['port']) - bech32_pubkey = srv_ans['host'].split('.')[0] - pubkey = get_compressed_pubkey_from_bech32(bech32_pubkey) - peers.append(LNPeerAddr(ln_host, port, pubkey)) - except Exception as e: - self.print_error('error with parsing peer from dns seed: {}'.format(e)) - continue - self.print_error('got {} ln peers from dns seed'.format(len(peers))) - return peers - async def reestablish_peers_and_channels(self): async def reestablish_peer_for_given_channel(): # try last good address first @@ -784,21 +843,23 @@ class LNWorker(PrintError): if last_tried + PEER_RETRY_INTERVAL_FOR_CHANNELS < now: await self.add_peer(host, port, chan.node_id) - with self.lock: - channels = list(self.channels.values()) - now = time.time() - for chan in channels: - if chan.is_closed(): - continue - if constants.net is not constants.BitcoinRegtest: - ratio = chan.constraints.feerate / self.current_feerate_per_kw() - if ratio < 0.5: - self.print_error(f"WARNING: fee level for channel {bh2u(chan.channel_id)} is {chan.constraints.feerate} sat/kiloweight, current recommended feerate is {self.current_feerate_per_kw()} sat/kiloweight, consider force closing!") - if not chan.should_try_to_reestablish_peer(): - continue - peer = self.peers.get(chan.node_id, None) - coro = peer.reestablish_channel(chan) if peer else reestablish_peer_for_given_channel() - await self.network.main_taskgroup.spawn(coro) + while True: + await asyncio.sleep(1) + with self.lock: + channels = list(self.channels.values()) + now = time.time() + for chan in channels: + if chan.is_closed(): + continue + if constants.net is not constants.BitcoinRegtest: + ratio = chan.constraints.feerate / self.current_feerate_per_kw() + if ratio < 0.5: + self.print_error(f"WARNING: fee level for channel {bh2u(chan.channel_id)} is {chan.constraints.feerate} sat/kiloweight, current recommended feerate is {self.current_feerate_per_kw()} sat/kiloweight, consider force closing!") + if not chan.should_try_to_reestablish_peer(): + continue + peer = self.peers.get(chan.node_id, None) + coro = peer.reestablish_channel(chan) if peer else reestablish_peer_for_given_channel() + await self.network.main_taskgroup.spawn(coro) def current_feerate_per_kw(self): from .simple_config import FEE_LN_ETA_TARGET, FEERATE_FALLBACK_STATIC_FEE, FEERATE_REGTEST_HARDCODED @@ -808,37 +869,3 @@ class LNWorker(PrintError): if feerate_per_kvbyte is None: feerate_per_kvbyte = FEERATE_FALLBACK_STATIC_FEE return max(253, feerate_per_kvbyte // 4) - - async def main_loop(self): - await self.on_network_update('network_updated') # shortcut (don't block) if funding tx locked and verified - await self.network.lnwatcher.on_network_update('network_updated') # ping watcher to check our channels - listen_addr = self.config.get('lightning_listen') - if listen_addr: - addr, port = listen_addr.rsplit(':', 2) - if addr[0] == '[': - # ipv6 - addr = addr[1:-1] - async def cb(reader, writer): - transport = LNResponderTransport(self.node_keypair.privkey, reader, writer) - try: - node_id = await transport.handshake() - except: - self.print_error('handshake failure from incoming connection') - return - peer = Peer(self, node_id, transport) - self.peers[node_id] = peer - await self.network.main_taskgroup.spawn(peer.main_loop()) - self.network.trigger_callback('ln_status') - - await asyncio.start_server(cb, addr, int(port)) - while True: - await asyncio.sleep(1) - now = time.time() - await self.reestablish_peers_and_channels() - if len(self.peers) >= NUM_PEERS_TARGET: - continue - peers = self._get_next_peers_to_try() - for peer in peers: - last_tried = self._last_tried_peer.get(peer, 0) - if last_tried + PEER_RETRY_INTERVAL < now: - await self.add_peer(peer.host, peer.port, peer.pubkey) diff --git a/electrum/network.py b/electrum/network.py @@ -298,10 +298,12 @@ class Network(Logger): # lightning network from . import lnwatcher + from . import lnworker from . import lnrouter self.channel_db = lnrouter.ChannelDB(self) self.path_finder = lnrouter.LNPathFinder(self.channel_db) self.lnwatcher = lnwatcher.LNWatcher(self) + self.lngossip = lnworker.LNGossip(self) def run_from_another_thread(self, coro): assert self._loop_thread != threading.current_thread(), 'must not be called from network thread' @@ -1158,6 +1160,8 @@ class Network(Logger): asyncio.run_coroutine_threadsafe(main(), self.asyncio_loop) self.trigger_callback('network_updated') + # + self.lngossip.start_network(self) def start(self, jobs: List=None): self._jobs = jobs or [] diff --git a/electrum/tests/test_lnpeer.py b/electrum/tests/test_lnpeer.py @@ -14,9 +14,9 @@ from electrum.util import bh2u, set_verbosity, create_and_start_event_loop from electrum.lnpeer import Peer from electrum.lnutil import LNPeerAddr, Keypair, privkey_to_pubkey from electrum.lnutil import LightningPeerConnectionClosed, RemoteMisbehaving -from electrum.lnutil import PaymentFailure +from electrum.lnutil import PaymentFailure, LnLocalFeatures from electrum.lnrouter import ChannelDB, LNPathFinder -from electrum.lnworker import LNWorker +from electrum.lnworker import LNWallet from electrum.lnmsg import encode_msg, decode_msg from .test_lnchannel import create_test_channels @@ -74,7 +74,7 @@ class MockStorage: class MockWallet: storage = MockStorage() -class MockLNWorker: +class MockLNWallet: def __init__(self, remote_keypair, local_keypair, chan, tx_queue): self.chan = chan self.remote_keypair = remote_keypair @@ -85,6 +85,7 @@ class MockLNWorker: self.preimages = {} self.inflight = {} self.wallet = MockWallet() + self.localfeatures = LnLocalFeatures(0) @property def lock(self): @@ -112,12 +113,12 @@ class MockLNWorker: def save_invoice(*args, is_paid=False): pass - get_invoice = LNWorker.get_invoice - get_preimage = LNWorker.get_preimage - _create_route_from_invoice = LNWorker._create_route_from_invoice - _check_invoice = staticmethod(LNWorker._check_invoice) - _pay_to_route = LNWorker._pay_to_route - force_close_channel = LNWorker.force_close_channel + get_invoice = LNWallet.get_invoice + get_preimage = LNWallet.get_preimage + _create_route_from_invoice = LNWallet._create_route_from_invoice + _check_invoice = staticmethod(LNWallet._check_invoice) + _pay_to_route = LNWallet._pay_to_route + force_close_channel = LNWallet.force_close_channel get_first_timestamp = lambda self: 0 class MockTransport: @@ -179,8 +180,8 @@ class TestPeer(SequentialTestCase): k1, k2 = keypair(), keypair() t1, t2 = transport_pair(self.alice_channel.name, self.bob_channel.name) q1, q2 = asyncio.Queue(), asyncio.Queue() - w1 = MockLNWorker(k1, k2, self.alice_channel, tx_queue=q1) - w2 = MockLNWorker(k2, k1, self.bob_channel, tx_queue=q2) + w1 = MockLNWallet(k1, k2, self.alice_channel, tx_queue=q1) + w2 = MockLNWallet(k2, k1, self.bob_channel, tx_queue=q2) p1 = Peer(w1, k1.pubkey, t1) p2 = Peer(w2, k2.pubkey, t2) w1.peer = p1 @@ -215,7 +216,7 @@ class TestPeer(SequentialTestCase): def prepare_ln_message_future(w2 # receiver ): fut = asyncio.Future() - def evt_set(event, _lnworker, msg, _htlc_id): + def evt_set(event, _lnwallet, msg, _htlc_id): fut.set_result(msg) w2.network.register_callback(evt_set, ['ln_message']) return fut @@ -226,7 +227,7 @@ class TestPeer(SequentialTestCase): fut = self.prepare_ln_message_future(w2) async def pay(): - addr, peer, coro = await LNWorker._pay(w1, pay_req, same_thread=True) + addr, peer, coro = await LNWallet._pay(w1, pay_req, same_thread=True) await coro print("HTLC ADDED") self.assertEqual(await fut, 'Payment received') diff --git a/electrum/wallet.py b/electrum/wallet.py @@ -64,7 +64,7 @@ from .interface import NetworkException from .ecc_fast import is_using_fast_ecc from .mnemonic import Mnemonic from .logging import get_logger -from .lnworker import LNWorker +from .lnworker import LNWallet if TYPE_CHECKING: from .network import Network @@ -230,7 +230,7 @@ class Abstract_Wallet(AddressSynchronizer): self.storage.put('wallet_type', self.wallet_type) # lightning - self.lnworker = LNWorker(self) + self.lnworker = LNWallet(self) # invoices and contacts self.invoices = InvoiceStore(self.storage) self.contacts = Contacts(self.storage)