let mut new_events = Vec::new();
let mut failed_forwards = Vec::new();
let mut phantom_receives: Vec<(u64, OutPoint, u128, Vec<(PendingHTLCInfo, u64)>)> = Vec::new();
- let mut handle_errors = Vec::new();
{
let mut forward_htlcs = HashMap::new();
mem::swap(&mut forward_htlcs, &mut self.forward_htlcs.lock().unwrap());
continue;
},
hash_map::Entry::Occupied(mut chan) => {
- let mut add_htlc_msgs = Vec::new();
- let mut fail_htlc_msgs = Vec::new();
for forward_info in pending_forwards.drain(..) {
match forward_info {
HTLCForwardInfo::AddHTLC(PendingAddHTLCInfo {
// Phantom payments are only PendingHTLCRouting::Receive.
phantom_shared_secret: None,
});
- match chan.get_mut().send_htlc(outgoing_amt_msat, payment_hash, outgoing_cltv_value, htlc_source.clone(), onion_packet, &self.logger) {
- Err(e) => {
- if let ChannelError::Ignore(msg) = e {
- log_trace!(self.logger, "Failed to forward HTLC with payment_hash {}: {}", log_bytes!(payment_hash.0), msg);
- } else {
- panic!("Stated return value requirements in send_htlc() were not met");
- }
- let (failure_code, data) = self.get_htlc_temp_fail_err_and_data(0x1000|7, short_chan_id, chan.get());
- failed_forwards.push((htlc_source, payment_hash,
- HTLCFailReason::reason(failure_code, data),
- HTLCDestination::NextHopChannel { node_id: Some(chan.get().get_counterparty_node_id()), channel_id: forward_chan_id }
- ));
- continue;
- },
- Ok(update_add) => {
- match update_add {
- Some(msg) => { add_htlc_msgs.push(msg); },
- None => {
- // Nothing to do here...we're waiting on a remote
- // revoke_and_ack before we can add anymore HTLCs. The Channel
- // will automatically handle building the update_add_htlc and
- // commitment_signed messages when we can.
- // TODO: Do some kind of timer to set the channel as !is_live()
- // as we don't really want others relying on us relaying through
- // this channel currently :/.
- }
- }
+ if let Err(e) = chan.get_mut().queue_add_htlc(outgoing_amt_msat,
+ payment_hash, outgoing_cltv_value, htlc_source.clone(),
+ onion_packet, &self.logger)
+ {
+ if let ChannelError::Ignore(msg) = e {
+ log_trace!(self.logger, "Failed to forward HTLC with payment_hash {}: {}", log_bytes!(payment_hash.0), msg);
+ } else {
+ panic!("Stated return value requirements in send_htlc() were not met");
}
+ let (failure_code, data) = self.get_htlc_temp_fail_err_and_data(0x1000|7, short_chan_id, chan.get());
+ failed_forwards.push((htlc_source, payment_hash,
+ HTLCFailReason::reason(failure_code, data),
+ HTLCDestination::NextHopChannel { node_id: Some(chan.get().get_counterparty_node_id()), channel_id: forward_chan_id }
+ ));
+ continue;
}
},
HTLCForwardInfo::AddHTLC { .. } => {
},
HTLCForwardInfo::FailHTLC { htlc_id, err_packet } => {
log_trace!(self.logger, "Failing HTLC back to channel with short id {} (backward HTLC ID {}) after delay", short_chan_id, htlc_id);
- match chan.get_mut().get_update_fail_htlc(htlc_id, err_packet, &self.logger) {
- Err(e) => {
- if let ChannelError::Ignore(msg) = e {
- log_trace!(self.logger, "Failed to fail HTLC with ID {} backwards to short_id {}: {}", htlc_id, short_chan_id, msg);
- } else {
- panic!("Stated return value requirements in get_update_fail_htlc() were not met");
- }
- // fail-backs are best-effort, we probably already have one
- // pending, and if not that's OK, if not, the channel is on
- // the chain and sending the HTLC-Timeout is their problem.
- continue;
- },
- Ok(Some(msg)) => { fail_htlc_msgs.push(msg); },
- Ok(None) => {
- // Nothing to do here...we're waiting on a remote
- // revoke_and_ack before we can update the commitment
- // transaction. The Channel will automatically handle
- // building the update_fail_htlc and commitment_signed
- // messages when we can.
- // We don't need any kind of timer here as they should fail
- // the channel onto the chain if they can't get our
- // update_fail_htlc in time, it's not our problem.
+ if let Err(e) = chan.get_mut().queue_fail_htlc(
+ htlc_id, err_packet, &self.logger
+ ) {
+ if let ChannelError::Ignore(msg) = e {
+ log_trace!(self.logger, "Failed to fail HTLC with ID {} backwards to short_id {}: {}", htlc_id, short_chan_id, msg);
+ } else {
+ panic!("Stated return value requirements in queue_fail_htlc() were not met");
}
+ // fail-backs are best-effort, we probably already have one
+ // pending, and if not that's OK, if not, the channel is on
+ // the chain and sending the HTLC-Timeout is their problem.
+ continue;
}
},
}
}
-
- if !add_htlc_msgs.is_empty() || !fail_htlc_msgs.is_empty() {
- let (commitment_msg, monitor_update) = match chan.get_mut().send_commitment(&self.logger) {
- Ok(res) => res,
- Err(e) => {
- // We surely failed send_commitment due to bad keys, in that case
- // close channel and then send error message to peer.
- let counterparty_node_id = chan.get().get_counterparty_node_id();
- let err: Result<(), _> = match e {
- ChannelError::Ignore(_) | ChannelError::Warn(_) => {
- panic!("Stated return value requirements in send_commitment() were not met");
- }
- ChannelError::Close(msg) => {
- log_trace!(self.logger, "Closing channel {} due to Close-required error: {}", log_bytes!(chan.key()[..]), msg);
- let mut channel = remove_channel!(self, chan);
- // ChannelClosed event is generated by handle_error for us.
- Err(MsgHandleErrInternal::from_finish_shutdown(msg, channel.channel_id(), channel.get_user_id(), channel.force_shutdown(true), self.get_channel_update_for_broadcast(&channel).ok()))
- },
- };
- handle_errors.push((counterparty_node_id, err));
- continue;
- }
- };
- match self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), monitor_update) {
- ChannelMonitorUpdateStatus::Completed => {},
- e => {
- handle_errors.push((chan.get().get_counterparty_node_id(), handle_monitor_update_res!(self, e, chan, RAACommitmentOrder::CommitmentFirst, false, true)));
- continue;
- }
- }
- log_debug!(self.logger, "Forwarding HTLCs resulted in a commitment update with {} HTLCs added and {} HTLCs failed for channel {}",
- add_htlc_msgs.len(), fail_htlc_msgs.len(), log_bytes!(chan.get().channel_id()));
- channel_state.pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
- node_id: chan.get().get_counterparty_node_id(),
- updates: msgs::CommitmentUpdate {
- update_add_htlcs: add_htlc_msgs,
- update_fulfill_htlcs: Vec::new(),
- update_fail_htlcs: fail_htlc_msgs,
- update_fail_malformed_htlcs: Vec::new(),
- update_fee: None,
- commitment_signed: commitment_msg,
- },
- });
- }
}
}
} else {
}
self.forward_htlcs(&mut phantom_receives);
- for (counterparty_node_id, err) in handle_errors.drain(..) {
- let _ = handle_error!(self, err, counterparty_node_id);
- }
+ // Freeing the holding cell here is relatively redundant - in practice we'll do it when we
+ // next get a `get_and_clear_pending_msg_events` call, but some tests rely on it, and it's
+ // nice to do the work now if we can rather than while we're trying to get messages in the
+ // network stack.
+ self.check_free_holding_cells();
if new_events.is_empty() { return }
let mut events = self.pending_events.lock().unwrap();
self.process_background_events();
}
- fn update_channel_fee(&self, pending_msg_events: &mut Vec<events::MessageSendEvent>, chan_id: &[u8; 32], chan: &mut Channel<<K::Target as KeysInterface>::Signer>, new_feerate: u32) -> (bool, NotifyOption, Result<(), MsgHandleErrInternal>) {
- if !chan.is_outbound() { return (true, NotifyOption::SkipPersist, Ok(())); }
+ fn update_channel_fee(&self, chan_id: &[u8; 32], chan: &mut Channel<<K::Target as KeysInterface>::Signer>, new_feerate: u32) -> NotifyOption {
+ if !chan.is_outbound() { return NotifyOption::SkipPersist; }
// If the feerate has decreased by less than half, don't bother
if new_feerate <= chan.get_feerate() && new_feerate * 2 > chan.get_feerate() {
log_trace!(self.logger, "Channel {} does not qualify for a feerate change from {} to {}.",
log_bytes!(chan_id[..]), chan.get_feerate(), new_feerate);
- return (true, NotifyOption::SkipPersist, Ok(()));
+ return NotifyOption::SkipPersist;
}
if !chan.is_live() {
log_trace!(self.logger, "Channel {} does not qualify for a feerate change from {} to {} as it cannot currently be updated (probably the peer is disconnected).",
log_bytes!(chan_id[..]), chan.get_feerate(), new_feerate);
- return (true, NotifyOption::SkipPersist, Ok(()));
+ return NotifyOption::SkipPersist;
}
log_trace!(self.logger, "Channel {} qualifies for a feerate change from {} to {}.",
log_bytes!(chan_id[..]), chan.get_feerate(), new_feerate);
- let mut retain_channel = true;
- let res = match chan.send_update_fee_and_commit(new_feerate, &self.logger) {
- Ok(res) => Ok(res),
- Err(e) => {
- let (drop, res) = convert_chan_err!(self, e, chan, chan_id);
- if drop { retain_channel = false; }
- Err(res)
- }
- };
- let ret_err = match res {
- Ok(Some((update_fee, commitment_signed, monitor_update))) => {
- match self.chain_monitor.update_channel(chan.get_funding_txo().unwrap(), monitor_update) {
- ChannelMonitorUpdateStatus::Completed => {
- pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
- node_id: chan.get_counterparty_node_id(),
- updates: msgs::CommitmentUpdate {
- update_add_htlcs: Vec::new(),
- update_fulfill_htlcs: Vec::new(),
- update_fail_htlcs: Vec::new(),
- update_fail_malformed_htlcs: Vec::new(),
- update_fee: Some(update_fee),
- commitment_signed,
- },
- });
- Ok(())
- },
- e => {
- let (res, drop) = handle_monitor_update_res!(self, e, chan, RAACommitmentOrder::CommitmentFirst, chan_id, COMMITMENT_UPDATE_ONLY);
- if drop { retain_channel = false; }
- res
- }
- }
- },
- Ok(None) => Ok(()),
- Err(e) => Err(e),
- };
- (retain_channel, NotifyOption::DoPersist, ret_err)
+ chan.queue_update_fee(new_feerate, &self.logger);
+ NotifyOption::DoPersist
}
#[cfg(fuzzing)]
let new_feerate = self.fee_estimator.bounded_sat_per_1000_weight(ConfirmationTarget::Normal);
- let mut handle_errors = Vec::new();
- {
- let mut channel_state_lock = self.channel_state.lock().unwrap();
- let channel_state = &mut *channel_state_lock;
- let pending_msg_events = &mut channel_state.pending_msg_events;
- channel_state.by_id.retain(|chan_id, chan| {
- let (retain_channel, chan_needs_persist, err) = self.update_channel_fee(pending_msg_events, chan_id, chan, new_feerate);
- if chan_needs_persist == NotifyOption::DoPersist { should_persist = NotifyOption::DoPersist; }
- if err.is_err() {
- handle_errors.push(err);
- }
- retain_channel
- });
+ let mut channel_state = self.channel_state.lock().unwrap();
+ for (chan_id, chan) in channel_state.by_id.iter_mut() {
+ let chan_needs_persist = self.update_channel_fee(chan_id, chan, new_feerate);
+ if chan_needs_persist == NotifyOption::DoPersist { should_persist = NotifyOption::DoPersist; }
}
should_persist
let new_feerate = self.fee_estimator.bounded_sat_per_1000_weight(ConfirmationTarget::Normal);
- let mut handle_errors = Vec::new();
+ let mut handle_errors: Vec<(Result<(), _>, _)> = Vec::new();
let mut timed_out_mpp_htlcs = Vec::new();
{
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
let pending_msg_events = &mut channel_state.pending_msg_events;
channel_state.by_id.retain(|chan_id, chan| {
- let counterparty_node_id = chan.get_counterparty_node_id();
- let (retain_channel, chan_needs_persist, err) = self.update_channel_fee(pending_msg_events, chan_id, chan, new_feerate);
+ let chan_needs_persist = self.update_channel_fee(chan_id, chan, new_feerate);
if chan_needs_persist == NotifyOption::DoPersist { should_persist = NotifyOption::DoPersist; }
- if err.is_err() {
- handle_errors.push((err, counterparty_node_id));
- }
- if !retain_channel { return false; }
if let Err(e) = chan.timer_check_closing_negotiation_progress() {
let (needs_close, err) = convert_chan_err!(self, e, chan, chan_id);
self.remove_stale_resolved_payments();
+ // Technically we don't need to do this here, but if we have holding cell entries in a
+ // channel that need freeing, it's better to do that here and block a background task
+ // than block the message queueing pipeline.
+ if self.check_free_holding_cells() {
+ should_persist = NotifyOption::DoPersist;
+ }
+
should_persist
});
}
/// Check the holding cell in each channel and free any pending HTLCs in them if possible.
/// Returns whether there were any updates such as if pending HTLCs were freed or a monitor
/// update was applied.
- ///
- /// This should only apply to HTLCs which were added to the holding cell because we were
- /// waiting on a monitor update to finish. In that case, we don't want to free the holding cell
- /// directly in `channel_monitor_updated` as it may introduce deadlocks calling back into user
- /// code to inform them of a channel monitor update.
fn check_free_holding_cells(&self) -> bool {
let mut has_monitor_update = false;
let mut failed_htlcs = Vec::new();
projects / rust-lightning / blobdiff