None
}
}
+
+ /// Gets the latest commitment transaction and any dependent transactions for relay (forcing
+ /// shutdown of this channel - no more calls into this Channel may be made afterwards except
+ /// those explicitly stated to be allowed after shutdown completes, eg some simple getters).
+ /// Also returns the list of payment_hashes for channels which we can safely fail backwards
+ /// immediately (others we will have to allow to time out).
+ pub fn force_shutdown(&mut self, should_broadcast: bool) -> ShutdownResult {
+ // Note that we MUST only generate a monitor update that indicates force-closure - we're
+ // called during initialization prior to the chain_monitor in the encompassing ChannelManager
+ // being fully configured in some cases. Thus, its likely any monitor events we generate will
+ // be delayed in being processed! See the docs for `ChannelManagerReadArgs` for more.
+ assert!(self.channel_state != ChannelState::ShutdownComplete as u32);
+
+ // We go ahead and "free" any holding cell HTLCs or HTLCs we haven't yet committed to and
+ // return them to fail the payment.
+ let mut dropped_outbound_htlcs = Vec::with_capacity(self.holding_cell_htlc_updates.len());
+ let counterparty_node_id = self.get_counterparty_node_id();
+ for htlc_update in self.holding_cell_htlc_updates.drain(..) {
+ match htlc_update {
+ HTLCUpdateAwaitingACK::AddHTLC { source, payment_hash, .. } => {
+ dropped_outbound_htlcs.push((source, payment_hash, counterparty_node_id, self.channel_id));
+ },
+ _ => {}
+ }
+ }
+ let monitor_update = if let Some(funding_txo) = self.get_funding_txo() {
+ // If we haven't yet exchanged funding signatures (ie channel_state < FundingSent),
+ // returning a channel monitor update here would imply a channel monitor update before
+ // we even registered the channel monitor to begin with, which is invalid.
+ // Thus, if we aren't actually at a point where we could conceivably broadcast the
+ // funding transaction, don't return a funding txo (which prevents providing the
+ // monitor update to the user, even if we return one).
+ // See test_duplicate_chan_id and test_pre_lockin_no_chan_closed_update for more.
+ if self.channel_state & (ChannelState::FundingSent as u32 | ChannelState::ChannelReady as u32 | ChannelState::ShutdownComplete as u32) != 0 {
+ self.latest_monitor_update_id = CLOSED_CHANNEL_UPDATE_ID;
+ Some((self.get_counterparty_node_id(), funding_txo, ChannelMonitorUpdate {
+ update_id: self.latest_monitor_update_id,
+ updates: vec![ChannelMonitorUpdateStep::ChannelForceClosed { should_broadcast }],
+ }))
+ } else { None }
+ } else { None };
+
+ self.channel_state = ChannelState::ShutdownComplete as u32;
+ self.update_time_counter += 1;
+ (monitor_update, dropped_outbound_htlcs)
+ }
}
// Internal utility functions for channels
Ok((shutdown, monitor_update, dropped_outbound_htlcs))
}
- /// Gets the latest commitment transaction and any dependent transactions for relay (forcing
- /// shutdown of this channel - no more calls into this Channel may be made afterwards except
- /// those explicitly stated to be allowed after shutdown completes, eg some simple getters).
- /// Also returns the list of payment_hashes for channels which we can safely fail backwards
- /// immediately (others we will have to allow to time out).
- pub fn force_shutdown(&mut self, should_broadcast: bool) -> ShutdownResult {
- // Note that we MUST only generate a monitor update that indicates force-closure - we're
- // called during initialization prior to the chain_monitor in the encompassing ChannelManager
- // being fully configured in some cases. Thus, its likely any monitor events we generate will
- // be delayed in being processed! See the docs for `ChannelManagerReadArgs` for more.
- assert!(self.context.channel_state != ChannelState::ShutdownComplete as u32);
-
- // We go ahead and "free" any holding cell HTLCs or HTLCs we haven't yet committed to and
- // return them to fail the payment.
- let mut dropped_outbound_htlcs = Vec::with_capacity(self.context.holding_cell_htlc_updates.len());
- let counterparty_node_id = self.context.get_counterparty_node_id();
- for htlc_update in self.context.holding_cell_htlc_updates.drain(..) {
- match htlc_update {
- HTLCUpdateAwaitingACK::AddHTLC { source, payment_hash, .. } => {
- dropped_outbound_htlcs.push((source, payment_hash, counterparty_node_id, self.context.channel_id));
- },
- _ => {}
- }
- }
- let monitor_update = if let Some(funding_txo) = self.context.get_funding_txo() {
- // If we haven't yet exchanged funding signatures (ie channel_state < FundingSent),
- // returning a channel monitor update here would imply a channel monitor update before
- // we even registered the channel monitor to begin with, which is invalid.
- // Thus, if we aren't actually at a point where we could conceivably broadcast the
- // funding transaction, don't return a funding txo (which prevents providing the
- // monitor update to the user, even if we return one).
- // See test_duplicate_chan_id and test_pre_lockin_no_chan_closed_update for more.
- if self.context.channel_state & (ChannelState::FundingSent as u32 | ChannelState::ChannelReady as u32 | ChannelState::ShutdownComplete as u32) != 0 {
- self.context.latest_monitor_update_id = CLOSED_CHANNEL_UPDATE_ID;
- Some((self.context.get_counterparty_node_id(), funding_txo, ChannelMonitorUpdate {
- update_id: self.context.latest_monitor_update_id,
- updates: vec![ChannelMonitorUpdateStep::ChannelForceClosed { should_broadcast }],
- }))
- } else { None }
- } else { None };
-
- self.context.channel_state = ChannelState::ShutdownComplete as u32;
- self.context.update_time_counter += 1;
- (monitor_update, dropped_outbound_htlcs)
- }
-
pub fn inflight_htlc_sources(&self) -> impl Iterator<Item=(&HTLCSource, &PaymentHash)> {
self.context.holding_cell_htlc_updates.iter()
.flat_map(|htlc_update| {
projects / rust-lightning / blobdiff