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Track funding tx channelmonitor #4109

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Track funding tx channelmonitor #4109

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8376197
Prefactor: drop #[rustfmt::skip] on broadcast_latest_holder_commitmen…
martinsaposnic Sep 26, 2025
cdc4ebf
Add manual-funding broadcast tracking to ChannelMonitor
martinsaposnic Sep 26, 2025
b725130
Set funding_seen_onchain=true in filter_block
martinsaposnic Sep 26, 2025
c665c95
Gate holder broadcast queueing on funding confirmation
martinsaposnic Sep 26, 2025
1f9ee40
Defer claimable tracking until funding tx confirms
martinsaposnic Sep 26, 2025
ef38903
Queue holder commit once funding tx confirms
martinsaposnic Sep 26, 2025
400730f
Test manual broadcast tracking and holder commit flow
martinsaposnic Sep 26, 2025
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25 changes: 16 additions & 9 deletions lightning/src/chain/channelmonitor.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -5497,8 +5497,10 @@ impl<Signer: EcdsaChannelSigner> ChannelMonitorImpl<Signer> {
if should_broadcast_commitment {
let (mut claimables, mut outputs) =
self.generate_claimable_outpoints_and_watch_outputs(None);
claimable_outpoints.append(&mut claimables);
watch_outputs.append(&mut outputs);
if !self.is_manual_broadcast || self.funding_seen_onchain {
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Can we just check this inside generate_claimable_outpoints_and_watch_outputs instead?

claimable_outpoints.append(&mut claimables);
watch_outputs.append(&mut outputs);
}
}

self.block_confirmed(height, block_hash, txn_matched, watch_outputs, claimable_outpoints, &broadcaster, &fee_estimator, logger)
Expand Down Expand Up @@ -5532,13 +5534,18 @@ impl<Signer: EcdsaChannelSigner> ChannelMonitorImpl<Signer> {
log_trace!(logger, "Processing {} matched transactions for block at height {}.", txn_matched.len(), conf_height);
debug_assert!(self.best_block.height >= conf_height);

let should_broadcast = self.should_broadcast_holder_commitment_txn(logger);
if let Some(payment_hash) = should_broadcast {
let reason = ClosureReason::HTLCsTimedOut { payment_hash: Some(payment_hash) };
let (mut new_outpoints, mut new_outputs) =
self.generate_claimable_outpoints_and_watch_outputs(Some(reason));
claimable_outpoints.append(&mut new_outpoints);
watch_outputs.append(&mut new_outputs);
// Only generate claims if we haven't already done so (e.g., in transactions_confirmed).
if claimable_outpoints.is_empty() {
let should_broadcast = self.should_broadcast_holder_commitment_txn(logger);
if let Some(payment_hash) = should_broadcast {
let reason = ClosureReason::HTLCsTimedOut { payment_hash: Some(payment_hash) };
let (mut new_outpoints, mut new_outputs) =
self.generate_claimable_outpoints_and_watch_outputs(Some(reason));
if !self.is_manual_broadcast || self.funding_seen_onchain {
claimable_outpoints.append(&mut new_outpoints);
watch_outputs.append(&mut new_outputs);
}
}
}

// Find which on-chain events have reached their confirmation threshold.
Expand Down