log_trace!(logger, "Updating ChannelMonitor: channel force closed, should broadcast: {}", should_broadcast);
self.lockdown_from_offchain = true;
if *should_broadcast {
+ // There's no need to broadcast our commitment transaction if we've seen one
+ // confirmed (even with 1 confirmation) as it'll be rejected as
+ // duplicate/conflicting.
+ let detected_funding_spend = self.funding_spend_confirmed.is_some() ||
+ self.onchain_events_awaiting_threshold_conf.iter().find(|event| match event.event {
+ OnchainEvent::FundingSpendConfirmation { .. } => true,
+ _ => false,
+ }).is_some();
+ if detected_funding_spend {
+ continue;
+ }
self.broadcast_latest_holder_commitment_txn(broadcaster, logger);
// If the channel supports anchor outputs, we'll need to emit an external
// event to be consumed such that a child transaction is broadcast with a
if let Some(new_outputs) = new_outputs_option {
watch_outputs.push(new_outputs);
}
- // Since there may be multiple HTLCs (all from the same commitment) being
- // claimed by the counterparty within the same transaction, and
- // `check_spend_counterparty_htlc` already checks for all of them, we can
- // safely break from our loop.
+ // Since there may be multiple HTLCs for this channel (all spending the
+ // same commitment tx) being claimed by the counterparty within the same
+ // transaction, and `check_spend_counterparty_htlc` already checks all the
+ // ones relevant to this channel, we can safely break from our loop.
break;
}
}