// Note this is only exposed in cfg(test):
pub(super) struct ChannelHolder<Signer: Sign> {
pub(super) by_id: HashMap<[u8; 32], Channel<Signer>>,
- /// Map from payment hash to the payment data and any HTLCs which are to us and can be
- /// failed/claimed by the user.
- ///
- /// Note that while this is held in the same mutex as the channels themselves, no consistency
- /// guarantees are made about the channels given here actually existing anymore by the time you
- /// go to read them!
- claimable_htlcs: HashMap<PaymentHash, (events::PaymentPurpose, Vec<ClaimableHTLC>)>,
/// Messages to send to peers - pushed to in the same lock that they are generated in (except
/// for broadcast messages, where ordering isn't as strict).
pub(super) pending_msg_events: Vec<MessageSendEvent>,
// |
// |__`forward_htlcs`
// |
-// |__`channel_state`
-// | |
-// | |__`id_to_peer`
+// |__`pending_inbound_payments`
// | |
-// | |__`short_to_chan_info`
+// | |__`claimable_htlcs`
// | |
-// | |__`per_peer_state`
+// | |__`pending_outbound_payments`
// | |
-// | |__`outbound_scid_aliases`
-// | |
-// | |__`pending_inbound_payments`
+// | |__`channel_state`
+// | |
+// | |__`id_to_peer`
// | |
-// | |__`pending_outbound_payments`
+// | |__`short_to_chan_info`
+// | |
+// | |__`per_peer_state`
+// | |
+// | |__`outbound_scid_aliases`
// | |
// | |__`best_block`
// | |
#[cfg(not(test))]
forward_htlcs: Mutex<HashMap<u64, Vec<HTLCForwardInfo>>>,
+ /// Map from payment hash to the payment data and any HTLCs which are to us and can be
+ /// failed/claimed by the user.
+ ///
+ /// Note that, no consistency guarantees are made about the channels given here actually
+ /// existing anymore by the time you go to read them!
+ ///
+ /// See `ChannelManager` struct-level documentation for lock order requirements.
+ claimable_htlcs: Mutex<HashMap<PaymentHash, (events::PaymentPurpose, Vec<ClaimableHTLC>)>>,
+
/// The set of outbound SCID aliases across all our channels, including unconfirmed channels
/// and some closed channels which reached a usable state prior to being closed. This is used
/// only to avoid duplicates, and is not persisted explicitly to disk, but rebuilt from the
channel_state: Mutex::new(ChannelHolder{
by_id: HashMap::new(),
- claimable_htlcs: HashMap::new(),
pending_msg_events: Vec::new(),
}),
outbound_scid_aliases: Mutex::new(HashSet::new()),
pending_inbound_payments: Mutex::new(HashMap::new()),
pending_outbound_payments: Mutex::new(HashMap::new()),
forward_htlcs: Mutex::new(HashMap::new()),
+ claimable_htlcs: Mutex::new(HashMap::new()),
id_to_peer: Mutex::new(HashMap::new()),
short_to_chan_info: FairRwLock::new(HashMap::new()),
if *counterparty_node_id != chan_entry.get().get_counterparty_node_id(){
return Err(APIError::APIMisuseError { err: "The passed counterparty_node_id doesn't match the channel's counterparty node_id".to_owned() });
}
- let per_peer_state = self.per_peer_state.read().unwrap();
- let (shutdown_msg, monitor_update, htlcs) = match per_peer_state.get(&counterparty_node_id) {
- Some(peer_state) => {
- let peer_state = peer_state.lock().unwrap();
- let their_features = &peer_state.latest_features;
- chan_entry.get_mut().get_shutdown(&self.keys_manager, their_features, target_feerate_sats_per_1000_weight)?
- },
- None => return Err(APIError::ChannelUnavailable { err: format!("Not connected to node: {}", counterparty_node_id) }),
+ let (shutdown_msg, monitor_update, htlcs) = {
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ match per_peer_state.get(&counterparty_node_id) {
+ Some(peer_state) => {
+ let peer_state = peer_state.lock().unwrap();
+ let their_features = &peer_state.latest_features;
+ chan_entry.get_mut().get_shutdown(&self.keys_manager, their_features, target_feerate_sats_per_1000_weight)?
+ },
+ None => return Err(APIError::ChannelUnavailable { err: format!("Not connected to node: {}", counterparty_node_id) }),
+ }
};
failed_htlcs = htlcs;
Some((_cp_id, chan_id)) => Some(chan_id.clone()),
};
let chan_update_opt = if let Some(forwarding_id) = forwarding_id_opt {
- let chan = channel_state.by_id.get_mut(&forwarding_id).unwrap();
+ let chan = match channel_state.by_id.get_mut(&forwarding_id) {
+ None => {
+ // Channel was removed. The short_to_chan_info and by_id maps have
+ // no consistency guarantees.
+ break Some(("Don't have available channel for forwarding as requested.", 0x4000 | 10, None));
+ },
+ Some(chan) => chan
+ };
if !chan.should_announce() && !self.default_configuration.accept_forwards_to_priv_channels {
// Note that the behavior here should be identical to the above block - we
// should NOT reveal the existence or non-existence of a private channel if
},
None => { },
}
- } else { unreachable!(); }
+ } else {
+ // The channel was likely removed after we fetched the id from the
+ // `short_to_chan_info` map, but before we successfully locked the `by_id` map.
+ // This can occur as no consistency guarantees exists between the two maps.
+ return Err(APIError::ChannelUnavailable{err: "No channel available with first hop!".to_owned()});
+ }
return Ok(());
};
mem::swap(&mut forward_htlcs, &mut self.forward_htlcs.lock().unwrap());
for (short_chan_id, mut pending_forwards) in forward_htlcs {
- let mut channel_state_lock = self.channel_state.lock().unwrap();
- let channel_state = &mut *channel_state_lock;
if short_chan_id != 0 {
- let forward_chan_id = match self.short_to_chan_info.read().unwrap().get(&short_chan_id) {
- Some((_cp_id, chan_id)) => chan_id.clone(),
- None => {
+ macro_rules! forwarding_channel_not_found {
+ () => {
for forward_info in pending_forwards.drain(..) {
match forward_info {
HTLCForwardInfo::AddHTLC { prev_short_channel_id, prev_htlc_id, forward_info: PendingHTLCInfo {
}
}
}
+ }
+ }
+ let forward_chan_id = match self.short_to_chan_info.read().unwrap().get(&short_chan_id) {
+ Some((_cp_id, chan_id)) => chan_id.clone(),
+ None => {
+ forwarding_channel_not_found!();
continue;
}
};
- if let hash_map::Entry::Occupied(mut chan) = channel_state.by_id.entry(forward_chan_id) {
- 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 { prev_short_channel_id, prev_htlc_id, forward_info: PendingHTLCInfo {
- routing: PendingHTLCRouting::Forward {
- onion_packet, ..
- }, incoming_shared_secret, payment_hash, amt_to_forward, outgoing_cltv_value },
- prev_funding_outpoint } => {
- log_trace!(self.logger, "Adding HTLC from short id {} with payment_hash {} to channel with short id {} after delay", prev_short_channel_id, log_bytes!(payment_hash.0), short_chan_id);
- let htlc_source = HTLCSource::PreviousHopData(HTLCPreviousHopData {
- short_channel_id: prev_short_channel_id,
- outpoint: prev_funding_outpoint,
- htlc_id: prev_htlc_id,
- incoming_packet_shared_secret: incoming_shared_secret,
- // Phantom payments are only PendingHTLCRouting::Receive.
- phantom_shared_secret: None,
- });
- match chan.get_mut().send_htlc(amt_to_forward, 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 :/.
+ let mut channel_state_lock = self.channel_state.lock().unwrap();
+ let channel_state = &mut *channel_state_lock;
+ match channel_state.by_id.entry(forward_chan_id) {
+ hash_map::Entry::Vacant(_) => {
+ forwarding_channel_not_found!();
+ 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 { prev_short_channel_id, prev_htlc_id, forward_info: PendingHTLCInfo {
+ routing: PendingHTLCRouting::Forward {
+ onion_packet, ..
+ }, incoming_shared_secret, payment_hash, amt_to_forward, outgoing_cltv_value },
+ prev_funding_outpoint } => {
+ log_trace!(self.logger, "Adding HTLC from short id {} with payment_hash {} to channel with short id {} after delay", prev_short_channel_id, log_bytes!(payment_hash.0), short_chan_id);
+ let htlc_source = HTLCSource::PreviousHopData(HTLCPreviousHopData {
+ short_channel_id: prev_short_channel_id,
+ outpoint: prev_funding_outpoint,
+ htlc_id: prev_htlc_id,
+ incoming_packet_shared_secret: incoming_shared_secret,
+ // Phantom payments are only PendingHTLCRouting::Receive.
+ phantom_shared_secret: None,
+ });
+ match chan.get_mut().send_htlc(amt_to_forward, 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 :/.
+ }
}
}
}
- }
- },
- HTLCForwardInfo::AddHTLC { .. } => {
- panic!("short_channel_id != 0 should imply any pending_forward entries are of type Forward");
- },
- 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");
+ },
+ HTLCForwardInfo::AddHTLC { .. } => {
+ panic!("short_channel_id != 0 should imply any pending_forward entries are of type Forward");
+ },
+ 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.
}
- // 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 !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;
+ 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,
+ },
+ });
}
- 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 {
- unreachable!();
}
} else {
for forward_info in pending_forwards.drain(..) {
payment_secret: $payment_data.payment_secret,
}
};
- let (_, htlcs) = channel_state.claimable_htlcs.entry(payment_hash)
+ let mut claimable_htlcs = self.claimable_htlcs.lock().unwrap();
+ let (_, htlcs) = claimable_htlcs.entry(payment_hash)
.or_insert_with(|| (purpose(), Vec::new()));
if htlcs.len() == 1 {
if let OnionPayload::Spontaneous(_) = htlcs[0].onion_payload {
check_total_value!(payment_data, payment_preimage);
},
OnionPayload::Spontaneous(preimage) => {
- match channel_state.claimable_htlcs.entry(payment_hash) {
+ match self.claimable_htlcs.lock().unwrap().entry(payment_hash) {
hash_map::Entry::Vacant(e) => {
let purpose = events::PaymentPurpose::SpontaneousPayment(preimage);
e.insert((purpose.clone(), vec![claimable_htlc]));
true
});
+ }
- channel_state.claimable_htlcs.retain(|payment_hash, (_, htlcs)| {
- if htlcs.is_empty() {
- // This should be unreachable
- debug_assert!(false);
+ self.claimable_htlcs.lock().unwrap().retain(|payment_hash, (_, htlcs)| {
+ if htlcs.is_empty() {
+ // This should be unreachable
+ debug_assert!(false);
+ return false;
+ }
+ if let OnionPayload::Invoice { .. } = htlcs[0].onion_payload {
+ // Check if we've received all the parts we need for an MPP (the value of the parts adds to total_msat).
+ // In this case we're not going to handle any timeouts of the parts here.
+ if htlcs[0].total_msat == htlcs.iter().fold(0, |total, htlc| total + htlc.value) {
+ return true;
+ } else if htlcs.into_iter().any(|htlc| {
+ htlc.timer_ticks += 1;
+ return htlc.timer_ticks >= MPP_TIMEOUT_TICKS
+ }) {
+ timed_out_mpp_htlcs.extend(htlcs.into_iter().map(|htlc| (htlc.prev_hop.clone(), payment_hash.clone())));
return false;
}
- if let OnionPayload::Invoice { .. } = htlcs[0].onion_payload {
- // Check if we've received all the parts we need for an MPP (the value of the parts adds to total_msat).
- // In this case we're not going to handle any timeouts of the parts here.
- if htlcs[0].total_msat == htlcs.iter().fold(0, |total, htlc| total + htlc.value) {
- return true;
- } else if htlcs.into_iter().any(|htlc| {
- htlc.timer_ticks += 1;
- return htlc.timer_ticks >= MPP_TIMEOUT_TICKS
- }) {
- timed_out_mpp_htlcs.extend(htlcs.into_iter().map(|htlc| (htlc.prev_hop.clone(), payment_hash.clone())));
- return false;
- }
- }
- true
- });
- }
+ }
+ true
+ });
for htlc_source in timed_out_mpp_htlcs.drain(..) {
let receiver = HTLCDestination::FailedPayment { payment_hash: htlc_source.1 };
pub fn fail_htlc_backwards(&self, payment_hash: &PaymentHash) {
let _persistence_guard = PersistenceNotifierGuard::notify_on_drop(&self.total_consistency_lock, &self.persistence_notifier);
- let removed_source = {
- let mut channel_state = self.channel_state.lock().unwrap();
- channel_state.claimable_htlcs.remove(payment_hash)
- };
+ let removed_source = self.claimable_htlcs.lock().unwrap().remove(payment_hash);
if let Some((_, mut sources)) = removed_source {
for htlc in sources.drain(..) {
let mut htlc_msat_height_data = byte_utils::be64_to_array(htlc.value).to_vec();
let _persistence_guard = PersistenceNotifierGuard::notify_on_drop(&self.total_consistency_lock, &self.persistence_notifier);
- let removed_source = self.channel_state.lock().unwrap().claimable_htlcs.remove(&payment_hash);
+ let removed_source = self.claimable_htlcs.lock().unwrap().remove(&payment_hash);
if let Some((payment_purpose, mut sources)) = removed_source {
assert!(!sources.is_empty());
return ClaimFundsFromHop::MonitorUpdateFail(counterparty_node_id, res, None);
},
}
- } else { unreachable!(); }
+ } else { return ClaimFundsFromHop::PrevHopForceClosed }
}
fn finalize_claims(&self, mut sources: Vec<HTLCSource>) {
try_chan_entry!(self, chan.get_mut().channel_update(&msg), chan);
}
},
- hash_map::Entry::Vacant(_) => unreachable!()
+ hash_map::Entry::Vacant(_) => return Ok(NotifyOption::SkipPersist)
}
Ok(NotifyOption::DoPersist)
}
}
true
});
+ }
- if let Some(height) = height_opt {
- channel_state.claimable_htlcs.retain(|payment_hash, (_, htlcs)| {
- htlcs.retain(|htlc| {
- // If height is approaching the number of blocks we think it takes us to get
- // our commitment transaction confirmed before the HTLC expires, plus the
- // number of blocks we generally consider it to take to do a commitment update,
- // just give up on it and fail the HTLC.
- if height >= htlc.cltv_expiry - HTLC_FAIL_BACK_BUFFER {
- let mut htlc_msat_height_data = byte_utils::be64_to_array(htlc.value).to_vec();
- htlc_msat_height_data.extend_from_slice(&byte_utils::be32_to_array(height));
-
- timed_out_htlcs.push((HTLCSource::PreviousHopData(htlc.prev_hop.clone()), payment_hash.clone(), HTLCFailReason::Reason {
- failure_code: 0x4000 | 15,
- data: htlc_msat_height_data
- }, HTLCDestination::FailedPayment { payment_hash: payment_hash.clone() }));
- false
- } else { true }
- });
- !htlcs.is_empty() // Only retain this entry if htlcs has at least one entry.
+ if let Some(height) = height_opt {
+ self.claimable_htlcs.lock().unwrap().retain(|payment_hash, (_, htlcs)| {
+ htlcs.retain(|htlc| {
+ // If height is approaching the number of blocks we think it takes us to get
+ // our commitment transaction confirmed before the HTLC expires, plus the
+ // number of blocks we generally consider it to take to do a commitment update,
+ // just give up on it and fail the HTLC.
+ if height >= htlc.cltv_expiry - HTLC_FAIL_BACK_BUFFER {
+ let mut htlc_msat_height_data = byte_utils::be64_to_array(htlc.value).to_vec();
+ htlc_msat_height_data.extend_from_slice(&byte_utils::be32_to_array(height));
+
+ timed_out_htlcs.push((HTLCSource::PreviousHopData(htlc.prev_hop.clone()), payment_hash.clone(), HTLCFailReason::Reason {
+ failure_code: 0x4000 | 15,
+ data: htlc_msat_height_data
+ }, HTLCDestination::FailedPayment { payment_hash: payment_hash.clone() }));
+ false
+ } else { true }
});
- }
+ !htlcs.is_empty() // Only retain this entry if htlcs has at least one entry.
+ });
}
self.handle_init_event_channel_failures(failed_channels);
}
}
- let channel_state = self.channel_state.lock().unwrap();
+ let pending_inbound_payments = self.pending_inbound_payments.lock().unwrap();
+ let claimable_htlcs = self.claimable_htlcs.lock().unwrap();
+ let pending_outbound_payments = self.pending_outbound_payments.lock().unwrap();
+
let mut htlc_purposes: Vec<&events::PaymentPurpose> = Vec::new();
- (channel_state.claimable_htlcs.len() as u64).write(writer)?;
- for (payment_hash, (purpose, previous_hops)) in channel_state.claimable_htlcs.iter() {
+ (claimable_htlcs.len() as u64).write(writer)?;
+ for (payment_hash, (purpose, previous_hops)) in claimable_htlcs.iter() {
payment_hash.write(writer)?;
(previous_hops.len() as u64).write(writer)?;
for htlc in previous_hops.iter() {
peer_state.latest_features.write(writer)?;
}
- let pending_inbound_payments = self.pending_inbound_payments.lock().unwrap();
- let pending_outbound_payments = self.pending_outbound_payments.lock().unwrap();
let events = self.pending_events.lock().unwrap();
(events.len() as u64).write(writer)?;
for event in events.iter() {
channel_state: Mutex::new(ChannelHolder {
by_id,
- claimable_htlcs,
pending_msg_events: Vec::new(),
}),
inbound_payment_key: expanded_inbound_key,
pending_outbound_payments: Mutex::new(pending_outbound_payments.unwrap()),
forward_htlcs: Mutex::new(forward_htlcs),
+ claimable_htlcs: Mutex::new(claimable_htlcs),
outbound_scid_aliases: Mutex::new(outbound_scid_aliases),
id_to_peer: Mutex::new(id_to_peer),
short_to_chan_info: FairRwLock::new(short_to_chan_info),
projects / rust-lightning / blobdiff