AaronFiore/electrum
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lnwatcher: keep_watching should wait at least until closing_tx is deep

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Even if it decides there is nothing to sweep from the ctx/etc, it still needs to
keep watching until a reorg-safe depth.
This commit is contained in:
SomberNight
2025-06-27 11:37:23 +00:00
parent 6ce8eb12f7
commit a1a55db39c
2 changed files with 8 additions and 4 deletions
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7
electrum/lnwatcher.py
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@@ -99,6 +99,7 @@ class LNWatcher(Logger, EventListener):
if not self.adb.is_mine(address):
return
# inspect_tx_candidate might have added new addresses, in which case we return early
# note: maybe we should wait until adb.is_up_to_date... (?)
funding_txid = funding_outpoint.split(':')[0]
funding_height = self.adb.get_tx_height(funding_txid)
closing_txid = self.adb.get_spender(funding_outpoint)
@@ -159,7 +160,9 @@ class LNWatcher(Logger, EventListener):
return False
# detect who closed and get information about how to claim outputs
is_local_ctx, sweep_info_dict = chan.get_ctx_sweep_info(closing_tx)
keep_watching = False if sweep_info_dict else not self.adb.is_deeply_mined(closing_tx.txid())
# note: we need to keep watching *at least* until the closing tx is deeply mined,
# possibly longer if there are TXOs to sweep
keep_watching = not self.adb.is_deeply_mined(closing_tx.txid())
# create and broadcast transactions
for prevout, sweep_info in sweep_info_dict.items():
prev_txid, prev_index = prevout.split(':')
@@ -170,7 +173,7 @@ class LNWatcher(Logger, EventListener):
self.logger.info(f'prevout does not exist for {name}: {prevout}')
continue
was_added = self.maybe_redeem(sweep_info)
spender_txid = self.adb.get_spender(prevout)
spender_txid = self.adb.get_spender(prevout) # note: LOCAL spenders don't count
spender_tx = self.adb.get_transaction(spender_txid) if spender_txid else None
if spender_tx:
# the spender might be the remote, revoked or not

5
electrum/plugins/watchtower/watchtower.py
View File

@@ -202,9 +202,10 @@ class WatchTower(Logger, EventListener):
result.update(r)
return result
async def sweep_commitment_transaction(self, funding_outpoint, closing_tx):
async def sweep_commitment_transaction(self, funding_outpoint: str, closing_tx: Transaction) -> bool:
assert closing_tx
spenders = self.inspect_tx_candidate(funding_outpoint, 0)
keep_watching = False
keep_watching = not self.adb.is_deeply_mined(closing_tx.txid())
for prevout, spender in spenders.items():
if spender is not None:
keep_watching |= not self.adb.is_deeply_mined(spender)