channel backups: try fixing force-close-trigger

electrum/lnpeer.py

@@ -53,7 +53,7 @@ from .lnutil import ln_dummy_address
 from .json_db import StoredDict
 
 if TYPE_CHECKING:
-    from .lnworker import LNWorker, LNGossip, LNWallet
+    from .lnworker import LNWorker, LNGossip, LNWallet, LNBackups
     from .lnrouter import RouteEdge, LNPaymentRoute
     from .transaction import PartialTransaction
 
@@ -64,7 +64,12 @@ LN_P2P_NETWORK_TIMEOUT = 20
 class Peer(Logger):
     LOGGING_SHORTCUT = 'P'
 
-    def __init__(self, lnworker: Union['LNGossip', 'LNWallet'], pubkey:bytes, transport: LNTransportBase):
+    def __init__(
+            self,
+            lnworker: Union['LNGossip', 'LNWallet', 'LNBackups'],
+            pubkey: bytes,
+            transport: LNTransportBase
+    ):
         self._sent_init = False  # type: bool
         self._received_init = False  # type: bool
         self.initialized = asyncio.Future()
@@ -425,9 +430,6 @@ class Peer(Logger):
             first_blocknum=first_block,
             number_of_blocks=num_blocks)
 
-    def encode_short_ids(self, ids):
-        return chr(1) + zlib.compress(bfh(''.join(ids)))
-
     def decode_short_ids(self, encoded):
         if encoded[0] == 0:
             decoded = encoded[1:]
@@ -773,8 +775,8 @@ class Peer(Logger):
         self.send_message(
             "channel_reestablish",
             channel_id=channel_id,
-            next_local_commitment_number=0,
+            next_commitment_number=0,
-            next_remote_revocation_number=0,
+            next_revocation_number=0,
             your_last_per_commitment_secret=0,
             my_current_per_commitment_point=latest_point)
 

electrum/lnworker.py

@@ -20,7 +20,7 @@ from concurrent import futures
 
 import dns.resolver
 import dns.exception
-from aiorpcx import run_in_thread
+from aiorpcx import run_in_thread, TaskGroup
 
 from . import constants, util
 from . import keystore
@@ -1413,7 +1413,6 @@ class LNBackups(Logger):
         self.features = LnFeatures(0)
         self.features |= LnFeatures.OPTION_DATA_LOSS_PROTECT_OPT
         self.features |= LnFeatures.OPTION_STATIC_REMOTEKEY_OPT
-        self.taskgroup = SilentTaskGroup()
         self.lock = threading.RLock()
         self.wallet = wallet
         self.db = wallet.db
@@ -1443,6 +1442,12 @@ class LNBackups(Logger):
             if chan.funding_outpoint.to_str() == txo:
                 return chan
 
+    def on_peer_successfully_established(self, peer: Peer) -> None:
+        pass
+
+    def channels_for_peer(self, node_id):
+        return {}
+
     def start_network(self, network: 'Network'):
         assert network
         self.lnwatcher = LNWalletWatcher(self, network)
@@ -1483,10 +1488,12 @@ class LNBackups(Logger):
     @log_exceptions
     async def request_force_close(self, channel_id):
         cb = self.channel_backups[channel_id].cb
+        # TODO also try network addresses from gossip db (as it might have changed)
         peer_addr = LNPeerAddr(cb.host, cb.port, cb.node_id)
         transport = LNTransport(cb.privkey, peer_addr,
                                 proxy=self.network.proxy)
         peer = Peer(self, cb.node_id, transport)
-        await self.taskgroup.spawn(peer._message_loop())
+        async with TaskGroup() as group:
-        await peer.initialized
+            await group.spawn(peer._message_loop())
-        await self.taskgroup.spawn(peer.trigger_force_close(channel_id))
+            await group.spawn(peer.trigger_force_close(channel_id))
+            # TODO force-exit taskgroup, to clean-up