pub(super) enum PendingHTLCRouting {
Forward {
onion_packet: msgs::OnionPacket,
+ /// The SCID from the onion that we should forward to. This could be a "real" SCID, an
+ /// outbound SCID alias, or a phantom node SCID.
short_channel_id: u64, // This should be NonZero<u64> eventually when we bump MSRV
},
Receive {
// `process_pending_htlc_forwards()` for constructing the
// `HTLCSource::PreviousHopData` for failed and forwarded
// HTLCs.
+ //
+ // Note that this may be an outbound SCID alias for the associated channel.
prev_short_channel_id: u64,
prev_htlc_id: u64,
prev_funding_outpoint: OutPoint,
/// Tracks the inbound corresponding to an outbound HTLC
#[derive(Clone, Hash, PartialEq, Eq)]
pub(crate) struct HTLCPreviousHopData {
+ // Note that this may be an outbound SCID alias for the associated channel.
short_channel_id: u64,
htlc_id: u64,
incoming_packet_shared_secret: [u8; 32],
/// Note that if [`inbound_scid_alias`] is set, it must be used for invoices and inbound
/// payments instead of this. See [`get_inbound_payment_scid`].
///
+ /// For channels with [`confirmations_required`] set to `Some(0)`, [`outbound_scid_alias`] may
+ /// be used in place of this in outbound routes. See [`get_outbound_payment_scid`].
+ ///
/// [`inbound_scid_alias`]: Self::inbound_scid_alias
+ /// [`outbound_scid_alias`]: Self::outbound_scid_alias
/// [`get_inbound_payment_scid`]: Self::get_inbound_payment_scid
+ /// [`get_outbound_payment_scid`]: Self::get_outbound_payment_scid
+ /// [`confirmations_required`]: Self::confirmations_required
pub short_channel_id: Option<u64>,
+ /// An optional [`short_channel_id`] alias for this channel, randomly generated by us and
+ /// usable in place of [`short_channel_id`] to reference the channel in outbound routes when
+ /// the channel has not yet been confirmed (as long as [`confirmations_required`] is
+ /// `Some(0)`).
+ ///
+ /// This will be `None` as long as the channel is not available for routing outbound payments.
+ ///
+ /// [`short_channel_id`]: Self::short_channel_id
+ /// [`confirmations_required`]: Self::confirmations_required
+ pub outbound_scid_alias: Option<u64>,
/// An optional [`short_channel_id`] alias for this channel, randomly generated by our
/// counterparty and usable in place of [`short_channel_id`] in invoice route hints. Our
/// counterparty will recognize the alias provided here in place of the [`short_channel_id`]
pub fn get_inbound_payment_scid(&self) -> Option<u64> {
self.inbound_scid_alias.or(self.short_channel_id)
}
+
+ /// Gets the current SCID which should be used to identify this channel for outbound payments.
+ /// This should be used in [`Route`]s to describe the first hop or in other contexts where
+ /// we're sending or forwarding a payment outbound over this channel.
+ ///
+ /// This is either the [`ChannelDetails::short_channel_id`], if set, or the
+ /// [`ChannelDetails::outbound_scid_alias`]. See those for more information.
+ pub fn get_outbound_payment_scid(&self) -> Option<u64> {
+ self.short_channel_id.or(self.outbound_scid_alias)
+ }
}
/// If a payment fails to send, it can be in one of several states. This enum is returned as the
}
macro_rules! handle_monitor_err {
- ($self: ident, $err: expr, $short_to_id: expr, $chan: expr, $action_type: path, $resend_raa: expr, $resend_commitment: expr, $failed_forwards: expr, $failed_fails: expr, $failed_finalized_fulfills: expr, $chan_id: expr) => {
+ ($self: ident, $err: expr, $short_to_id: expr, $chan: expr, $action_type: path, $resend_raa: expr, $resend_commitment: expr, $resend_funding_locked: expr, $failed_forwards: expr, $failed_fails: expr, $failed_finalized_fulfills: expr, $chan_id: expr) => {
match $err {
ChannelMonitorUpdateErr::PermanentFailure => {
log_error!($self.logger, "Closing channel {} due to monitor update ChannelMonitorUpdateErr::PermanentFailure", log_bytes!($chan_id[..]));
if !$resend_raa {
debug_assert!($action_type == RAACommitmentOrder::CommitmentFirst || !$resend_commitment);
}
- $chan.monitor_update_failed($resend_raa, $resend_commitment, $failed_forwards, $failed_fails, $failed_finalized_fulfills);
+ $chan.monitor_update_failed($resend_raa, $resend_commitment, $resend_funding_locked, $failed_forwards, $failed_fails, $failed_finalized_fulfills);
(Err(MsgHandleErrInternal::from_chan_no_close(ChannelError::Ignore("Failed to update ChannelMonitor".to_owned()), *$chan_id)), false)
},
}
};
- ($self: ident, $err: expr, $channel_state: expr, $entry: expr, $action_type: path, $resend_raa: expr, $resend_commitment: expr, $failed_forwards: expr, $failed_fails: expr, $failed_finalized_fulfills: expr) => { {
- let (res, drop) = handle_monitor_err!($self, $err, $channel_state.short_to_id, $entry.get_mut(), $action_type, $resend_raa, $resend_commitment, $failed_forwards, $failed_fails, $failed_finalized_fulfills, $entry.key());
+ ($self: ident, $err: expr, $channel_state: expr, $entry: expr, $action_type: path, $resend_raa: expr, $resend_commitment: expr, $resend_funding_locked: expr, $failed_forwards: expr, $failed_fails: expr, $failed_finalized_fulfills: expr) => { {
+ let (res, drop) = handle_monitor_err!($self, $err, $channel_state.short_to_id, $entry.get_mut(), $action_type, $resend_raa, $resend_commitment, $resend_funding_locked, $failed_forwards, $failed_fails, $failed_finalized_fulfills, $entry.key());
if drop {
$entry.remove_entry();
}
} };
($self: ident, $err: expr, $channel_state: expr, $entry: expr, $action_type: path, $chan_id: expr, COMMITMENT_UPDATE_ONLY) => { {
debug_assert!($action_type == RAACommitmentOrder::CommitmentFirst);
- handle_monitor_err!($self, $err, $channel_state, $entry, $action_type, false, true, Vec::new(), Vec::new(), Vec::new(), $chan_id)
+ handle_monitor_err!($self, $err, $channel_state, $entry, $action_type, false, true, false, Vec::new(), Vec::new(), Vec::new(), $chan_id)
} };
($self: ident, $err: expr, $channel_state: expr, $entry: expr, $action_type: path, $chan_id: expr, NO_UPDATE) => {
- handle_monitor_err!($self, $err, $channel_state, $entry, $action_type, false, false, Vec::new(), Vec::new(), Vec::new(), $chan_id)
+ handle_monitor_err!($self, $err, $channel_state, $entry, $action_type, false, false, false, Vec::new(), Vec::new(), Vec::new(), $chan_id)
+ };
+ ($self: ident, $err: expr, $channel_state: expr, $entry: expr, $action_type: path, $resend_funding_locked: expr, OPTIONALLY_RESEND_FUNDING_LOCKED) => {
+ handle_monitor_err!($self, $err, $channel_state, $entry, $action_type, false, false, $resend_funding_locked, Vec::new(), Vec::new(), Vec::new())
};
($self: ident, $err: expr, $channel_state: expr, $entry: expr, $action_type: path, $resend_raa: expr, $resend_commitment: expr) => {
- handle_monitor_err!($self, $err, $channel_state, $entry, $action_type, $resend_raa, $resend_commitment, Vec::new(), Vec::new(), Vec::new())
+ handle_monitor_err!($self, $err, $channel_state, $entry, $action_type, $resend_raa, $resend_commitment, false, Vec::new(), Vec::new(), Vec::new())
};
($self: ident, $err: expr, $channel_state: expr, $entry: expr, $action_type: path, $resend_raa: expr, $resend_commitment: expr, $failed_forwards: expr, $failed_fails: expr) => {
- handle_monitor_err!($self, $err, $channel_state, $entry, $action_type, $resend_raa, $resend_commitment, $failed_forwards, $failed_fails, Vec::new())
+ handle_monitor_err!($self, $err, $channel_state, $entry, $action_type, $resend_raa, $resend_commitment, false, $failed_forwards, $failed_fails, Vec::new())
};
}
let res = loop {
let forwards: Vec<(PendingHTLCInfo, u64)> = $pending_forwards; // Force type-checking to resolve
if !forwards.is_empty() {
- htlc_forwards = Some(($channel_entry.get().get_short_channel_id().expect("We can't have pending forwards before funding confirmation"),
+ htlc_forwards = Some(($channel_entry.get().get_short_channel_id().unwrap_or($channel_entry.get().outbound_scid_alias()),
$channel_entry.get().get_funding_txo().unwrap(), forwards));
}
// `have_received_message` indicates that type negotiation has completed.
channel_type: if channel.have_received_message() { Some(channel.get_channel_type().clone()) } else { None },
short_channel_id: channel.get_short_channel_id(),
+ outbound_scid_alias: if channel.is_usable() { Some(channel.outbound_scid_alias()) } else { None },
inbound_scid_alias: channel.latest_inbound_scid_alias(),
channel_value_satoshis: channel.get_value_satoshis(),
unspendable_punishment_reserve: to_self_reserve_satoshis,
action: msgs::ErrorAction::IgnoreError
});
}
+ if chan.get_short_channel_id().is_none() {
+ return Err(LightningError{err: "Channel not yet established".to_owned(), action: msgs::ErrorAction::IgnoreError});
+ }
log_trace!(self.logger, "Attempting to generate broadcast channel update for channel {}", log_bytes!(chan.channel_id()));
self.get_channel_update_for_unicast(chan)
}
/// May be called with channel_state already locked!
fn get_channel_update_for_unicast(&self, chan: &Channel<Signer>) -> Result<msgs::ChannelUpdate, LightningError> {
log_trace!(self.logger, "Attempting to generate channel update for channel {}", log_bytes!(chan.channel_id()));
- let short_channel_id = match chan.get_short_channel_id() {
+ let short_channel_id = match chan.get_short_channel_id().or(chan.latest_inbound_scid_alias()) {
None => return Err(LightningError{err: "Channel not yet established".to_owned(), action: msgs::ErrorAction::IgnoreError}),
Some(id) => id,
};
/// Handles the generation of a funding transaction, optionally (for tests) with a function
/// which checks the correctness of the funding transaction given the associated channel.
- fn funding_transaction_generated_intern<FundingOutput: Fn(&Channel<Signer>, &Transaction) -> Result<OutPoint, APIError>>
- (&self, temporary_channel_id: &[u8; 32], funding_transaction: Transaction, find_funding_output: FundingOutput) -> Result<(), APIError> {
+ fn funding_transaction_generated_intern<FundingOutput: Fn(&Channel<Signer>, &Transaction) -> Result<OutPoint, APIError>>(
+ &self, temporary_channel_id: &[u8; 32], _counterparty_node_id: &PublicKey, funding_transaction: Transaction, find_funding_output: FundingOutput
+ ) -> Result<(), APIError> {
let (chan, msg) = {
let (res, chan) = match self.channel_state.lock().unwrap().by_id.remove(temporary_channel_id) {
Some(mut chan) => {
}
#[cfg(test)]
- pub(crate) fn funding_transaction_generated_unchecked(&self, temporary_channel_id: &[u8; 32], funding_transaction: Transaction, output_index: u16) -> Result<(), APIError> {
- self.funding_transaction_generated_intern(temporary_channel_id, funding_transaction, |_, tx| {
+ pub(crate) fn funding_transaction_generated_unchecked(&self, temporary_channel_id: &[u8; 32], counterparty_node_id: &PublicKey, funding_transaction: Transaction, output_index: u16) -> Result<(), APIError> {
+ self.funding_transaction_generated_intern(temporary_channel_id, counterparty_node_id, funding_transaction, |_, tx| {
Ok(OutPoint { txid: tx.txid(), index: output_index })
})
}
///
/// [`Event::FundingGenerationReady`]: crate::util::events::Event::FundingGenerationReady
/// [`Event::ChannelClosed`]: crate::util::events::Event::ChannelClosed
- pub fn funding_transaction_generated(&self, temporary_channel_id: &[u8; 32], funding_transaction: Transaction) -> Result<(), APIError> {
+ pub fn funding_transaction_generated(&self, temporary_channel_id: &[u8; 32], counterparty_node_id: &PublicKey, funding_transaction: Transaction) -> Result<(), APIError> {
let _persistence_guard = PersistenceNotifierGuard::notify_on_drop(&self.total_consistency_lock, &self.persistence_notifier);
for inp in funding_transaction.input.iter() {
});
}
}
- self.funding_transaction_generated_intern(temporary_channel_id, funding_transaction, |chan, tx| {
+ self.funding_transaction_generated_intern(temporary_channel_id, counterparty_node_id, funding_transaction, |chan, tx| {
let mut output_index = None;
let expected_spk = chan.get_funding_redeemscript().to_v0_p2wsh();
for (idx, outp) in tx.output.iter().enumerate() {
}
}
- fn claim_funds_internal(&self, mut channel_state_lock: MutexGuard<ChannelHolder<Signer>>, source: HTLCSource, payment_preimage: PaymentPreimage, forwarded_htlc_value_msat: Option<u64>, from_onchain: bool) {
+ fn claim_funds_internal(&self, mut channel_state_lock: MutexGuard<ChannelHolder<Signer>>, source: HTLCSource, payment_preimage: PaymentPreimage, forwarded_htlc_value_msat: Option<u64>, from_onchain: bool, next_channel_id: [u8; 32]) {
match source {
HTLCSource::OutboundRoute { session_priv, payment_id, path, .. } => {
mem::drop(channel_state_lock);
} else { None };
let mut pending_events = self.pending_events.lock().unwrap();
+ let prev_channel_id = Some(prev_outpoint.to_channel_id());
+ let next_channel_id = Some(next_channel_id);
- let source_channel_id = Some(prev_outpoint.to_channel_id());
pending_events.push(events::Event::PaymentForwarded {
- source_channel_id,
fee_earned_msat,
claim_from_onchain_tx: from_onchain,
+ prev_channel_id,
+ next_channel_id,
});
}
}
}
}
- /// Called to accept a request to open a channel after [`Event::OpenChannelRequest`] has been
- /// triggered.
+ /// Accepts a request to open a channel after a [`Event::OpenChannelRequest`].
+ ///
+ /// The `temporary_channel_id` parameter indicates which inbound channel should be accepted,
+ /// and the `counterparty_node_id` parameter is the id of the peer which has requested to open
+ /// the channel.
+ ///
+ /// The `user_channel_id` parameter will be provided back in
+ /// [`Event::ChannelClosed::user_channel_id`] to allow tracking of which events correspond
+ /// with which `accept_inbound_channel`/`accept_inbound_channel_from_trusted_peer_0conf` call.
///
- /// The `temporary_channel_id` parameter indicates which inbound channel should be accepted.
+ /// [`Event::OpenChannelRequest`]: events::Event::OpenChannelRequest
+ /// [`Event::ChannelClosed::user_channel_id`]: events::Event::ChannelClosed::user_channel_id
+ pub fn accept_inbound_channel(&self, temporary_channel_id: &[u8; 32], counterparty_node_id: &PublicKey, user_channel_id: u64) -> Result<(), APIError> {
+ self.do_accept_inbound_channel(temporary_channel_id, counterparty_node_id, false, user_channel_id)
+ }
+
+ /// Accepts a request to open a channel after a [`events::Event::OpenChannelRequest`], treating
+ /// it as confirmed immediately.
///
- /// For inbound channels, the `user_channel_id` parameter will be provided back in
+ /// The `user_channel_id` parameter will be provided back in
/// [`Event::ChannelClosed::user_channel_id`] to allow tracking of which events correspond
- /// with which `accept_inbound_channel` call.
+ /// with which `accept_inbound_channel`/`accept_inbound_channel_from_trusted_peer_0conf` call.
+ ///
+ /// Unlike [`ChannelManager::accept_inbound_channel`], this method accepts the incoming channel
+ /// and (if the counterparty agrees), enables forwarding of payments immediately.
+ ///
+ /// This fully trusts that the counterparty has honestly and correctly constructed the funding
+ /// transaction and blindly assumes that it will eventually confirm.
+ ///
+ /// If it does not confirm before we decide to close the channel, or if the funding transaction
+ /// does not pay to the correct script the correct amount, *you will lose funds*.
///
/// [`Event::OpenChannelRequest`]: events::Event::OpenChannelRequest
/// [`Event::ChannelClosed::user_channel_id`]: events::Event::ChannelClosed::user_channel_id
- pub fn accept_inbound_channel(&self, temporary_channel_id: &[u8; 32], user_channel_id: u64) -> Result<(), APIError> {
+ pub fn accept_inbound_channel_from_trusted_peer_0conf(&self, temporary_channel_id: &[u8; 32], counterparty_node_id: &PublicKey, user_channel_id: u64) -> Result<(), APIError> {
+ self.do_accept_inbound_channel(temporary_channel_id, counterparty_node_id, true, user_channel_id)
+ }
+
+ fn do_accept_inbound_channel(&self, temporary_channel_id: &[u8; 32], counterparty_node_id: &PublicKey, accept_0conf: bool, user_channel_id: u64) -> Result<(), APIError> {
let _persistence_guard = PersistenceNotifierGuard::notify_on_drop(&self.total_consistency_lock, &self.persistence_notifier);
let mut channel_state_lock = self.channel_state.lock().unwrap();
if !channel.get().inbound_is_awaiting_accept() {
return Err(APIError::APIMisuseError { err: "The channel isn't currently awaiting to be accepted.".to_owned() });
}
+ if *counterparty_node_id != channel.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() });
+ }
+ if accept_0conf { channel.get_mut().set_0conf(); }
channel_state.pending_msg_events.push(events::MessageSendEvent::SendAcceptChannel {
node_id: channel.get().get_counterparty_node_id(),
msg: channel.get_mut().accept_inbound_channel(user_channel_id),
}
fn internal_funding_created(&self, counterparty_node_id: &PublicKey, msg: &msgs::FundingCreated) -> Result<(), MsgHandleErrInternal> {
- let ((funding_msg, monitor), mut chan) = {
+ let ((funding_msg, monitor, mut funding_locked), mut chan) = {
let best_block = *self.best_block.read().unwrap();
let mut channel_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_lock;
// hasn't persisted to disk yet - we can't lose money on a transaction that we haven't
// accepted payment from yet. We do, however, need to wait to send our funding_locked
// until we have persisted our monitor.
- chan.monitor_update_failed(false, false, Vec::new(), Vec::new(), Vec::new());
+ chan.monitor_update_failed(false, false, funding_locked.is_some(), Vec::new(), Vec::new(), Vec::new());
+ funding_locked = None; // Don't send the funding_locked now
},
}
}
node_id: counterparty_node_id.clone(),
msg: funding_msg,
});
+ if let Some(msg) = funding_locked {
+ send_funding_locked!(channel_state.short_to_id, channel_state.pending_msg_events, chan, msg);
+ }
e.insert(chan);
}
}
if chan.get().get_counterparty_node_id() != *counterparty_node_id {
return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
}
- let (monitor, funding_tx) = match chan.get_mut().funding_signed(&msg, best_block, &self.logger) {
+ let (monitor, funding_tx, funding_locked) = match chan.get_mut().funding_signed(&msg, best_block, &self.logger) {
Ok(update) => update,
Err(e) => try_chan_entry!(self, Err(e), channel_state, chan),
};
if let Err(e) = self.chain_monitor.watch_channel(chan.get().get_funding_txo().unwrap(), monitor) {
- let mut res = handle_monitor_err!(self, e, channel_state, chan, RAACommitmentOrder::RevokeAndACKFirst, false, false);
+ let mut res = handle_monitor_err!(self, e, channel_state, chan, RAACommitmentOrder::RevokeAndACKFirst, funding_locked.is_some(), OPTIONALLY_RESEND_FUNDING_LOCKED);
if let Err(MsgHandleErrInternal { ref mut shutdown_finish, .. }) = res {
// We weren't able to watch the channel to begin with, so no updates should be made on
// it. Previously, full_stack_target found an (unreachable) panic when the
}
return res
}
+ if let Some(msg) = funding_locked {
+ send_funding_locked!(channel_state.short_to_id, channel_state.pending_msg_events, chan.get(), msg);
+ }
funding_tx
},
hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
}
};
- self.claim_funds_internal(channel_lock, htlc_source, msg.payment_preimage.clone(), Some(forwarded_htlc_value), false);
+ self.claim_funds_internal(channel_lock, htlc_source, msg.payment_preimage.clone(), Some(forwarded_htlc_value), false, msg.channel_id);
Ok(())
}
} else {
if let Err(e) = handle_monitor_err!(self, e, channel_state, chan,
RAACommitmentOrder::CommitmentFirst, false,
- raa_updates.commitment_update.is_some(),
+ raa_updates.commitment_update.is_some(), false,
raa_updates.accepted_htlcs, raa_updates.failed_htlcs,
raa_updates.finalized_claimed_htlcs) {
break Err(e);
break Ok((raa_updates.accepted_htlcs, raa_updates.failed_htlcs,
raa_updates.finalized_claimed_htlcs,
chan.get().get_short_channel_id()
- .expect("RAA should only work on a short-id-available channel"),
+ .unwrap_or(chan.get().outbound_scid_alias()),
chan.get().get_funding_txo().unwrap()))
},
hash_map::Entry::Vacant(_) => break Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
let mut failed_channels = Vec::new();
let mut pending_monitor_events = self.chain_monitor.release_pending_monitor_events();
let has_pending_monitor_events = !pending_monitor_events.is_empty();
- for monitor_event in pending_monitor_events.drain(..) {
- match monitor_event {
- MonitorEvent::HTLCEvent(htlc_update) => {
- if let Some(preimage) = htlc_update.payment_preimage {
- log_trace!(self.logger, "Claiming HTLC with preimage {} from our monitor", log_bytes!(preimage.0));
- self.claim_funds_internal(self.channel_state.lock().unwrap(), htlc_update.source, preimage, htlc_update.onchain_value_satoshis.map(|v| v * 1000), true);
- } else {
- log_trace!(self.logger, "Failing HTLC with hash {} from our monitor", log_bytes!(htlc_update.payment_hash.0));
- self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), htlc_update.source, &htlc_update.payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 8, data: Vec::new() });
- }
- },
- MonitorEvent::CommitmentTxConfirmed(funding_outpoint) |
- MonitorEvent::UpdateFailed(funding_outpoint) => {
- let mut channel_lock = self.channel_state.lock().unwrap();
- let channel_state = &mut *channel_lock;
- let by_id = &mut channel_state.by_id;
- let pending_msg_events = &mut channel_state.pending_msg_events;
- if let hash_map::Entry::Occupied(chan_entry) = by_id.entry(funding_outpoint.to_channel_id()) {
- let mut chan = remove_channel!(self, channel_state, chan_entry);
- failed_channels.push(chan.force_shutdown(false));
- if let Ok(update) = self.get_channel_update_for_broadcast(&chan) {
- pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
- msg: update
+ for (funding_outpoint, mut monitor_events) in pending_monitor_events.drain(..) {
+ for monitor_event in monitor_events.drain(..) {
+ match monitor_event {
+ MonitorEvent::HTLCEvent(htlc_update) => {
+ if let Some(preimage) = htlc_update.payment_preimage {
+ log_trace!(self.logger, "Claiming HTLC with preimage {} from our monitor", log_bytes!(preimage.0));
+ self.claim_funds_internal(self.channel_state.lock().unwrap(), htlc_update.source, preimage, htlc_update.onchain_value_satoshis.map(|v| v * 1000), true, funding_outpoint.to_channel_id());
+ } else {
+ log_trace!(self.logger, "Failing HTLC with hash {} from our monitor", log_bytes!(htlc_update.payment_hash.0));
+ self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), htlc_update.source, &htlc_update.payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 8, data: Vec::new() });
+ }
+ },
+ MonitorEvent::CommitmentTxConfirmed(funding_outpoint) |
+ MonitorEvent::UpdateFailed(funding_outpoint) => {
+ let mut channel_lock = self.channel_state.lock().unwrap();
+ let channel_state = &mut *channel_lock;
+ let by_id = &mut channel_state.by_id;
+ let pending_msg_events = &mut channel_state.pending_msg_events;
+ if let hash_map::Entry::Occupied(chan_entry) = by_id.entry(funding_outpoint.to_channel_id()) {
+ let mut chan = remove_channel!(self, channel_state, chan_entry);
+ failed_channels.push(chan.force_shutdown(false));
+ if let Ok(update) = self.get_channel_update_for_broadcast(&chan) {
+ pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
+ msg: update
+ });
+ }
+ let reason = if let MonitorEvent::UpdateFailed(_) = monitor_event {
+ ClosureReason::ProcessingError { err: "Failed to persist ChannelMonitor update during chain sync".to_string() }
+ } else {
+ ClosureReason::CommitmentTxConfirmed
+ };
+ self.issue_channel_close_events(&chan, reason);
+ pending_msg_events.push(events::MessageSendEvent::HandleError {
+ node_id: chan.get_counterparty_node_id(),
+ action: msgs::ErrorAction::SendErrorMessage {
+ msg: msgs::ErrorMessage { channel_id: chan.channel_id(), data: "Channel force-closed".to_owned() }
+ },
});
}
- let reason = if let MonitorEvent::UpdateFailed(_) = monitor_event {
- ClosureReason::ProcessingError { err: "Failed to persist ChannelMonitor update during chain sync".to_string() }
- } else {
- ClosureReason::CommitmentTxConfirmed
- };
- self.issue_channel_close_events(&chan, reason);
- pending_msg_events.push(events::MessageSendEvent::HandleError {
- node_id: chan.get_counterparty_node_id(),
- action: msgs::ErrorAction::SendErrorMessage {
- msg: msgs::ErrorMessage { channel_id: chan.channel_id(), data: "Channel force-closed".to_owned() }
- },
- });
- }
- },
- MonitorEvent::UpdateCompleted { funding_txo, monitor_update_id } => {
- self.channel_monitor_updated(&funding_txo, monitor_update_id);
- },
+ },
+ MonitorEvent::UpdateCompleted { funding_txo, monitor_update_id } => {
+ self.channel_monitor_updated(&funding_txo, monitor_update_id);
+ },
+ }
}
}
}
}
}
+ if channel.is_our_funding_locked() {
+ if let Some(real_scid) = channel.get_short_channel_id() {
+ // If we sent a 0conf funding_locked, and now have an SCID, we add it
+ // to the short_to_id map here. Note that we check whether we can relay
+ // using the real SCID at relay-time (i.e. enforce option_scid_alias
+ // then), and if the funding tx is ever un-confirmed we force-close the
+ // channel, ensuring short_to_id is always consistent.
+ let scid_insert = short_to_id.insert(real_scid, channel.channel_id());
+ assert!(scid_insert.is_none() || scid_insert.unwrap() == channel.channel_id(),
+ "SCIDs should never collide - ensure you weren't behind by a full {} blocks when creating channels",
+ fake_scid::MAX_SCID_BLOCKS_FROM_NOW);
+ }
+ }
} else if let Err(reason) = res {
update_maps_on_chan_removal!(self, short_to_id, channel);
// It looks like our counterparty went on-chain or funding transaction was
let channel_state = &mut *channel_state_lock;
let pending_msg_events = &mut channel_state.pending_msg_events;
let short_to_id = &mut channel_state.short_to_id;
- if no_connection_possible {
- log_debug!(self.logger, "Failing all channels with {} due to no_connection_possible", log_pubkey!(counterparty_node_id));
- channel_state.by_id.retain(|_, chan| {
- if chan.get_counterparty_node_id() == *counterparty_node_id {
+ log_debug!(self.logger, "Marking channels with {} disconnected and generating channel_updates. We believe we {} make future connections to this peer.",
+ log_pubkey!(counterparty_node_id), if no_connection_possible { "cannot" } else { "can" });
+ channel_state.by_id.retain(|_, chan| {
+ if chan.get_counterparty_node_id() == *counterparty_node_id {
+ chan.remove_uncommitted_htlcs_and_mark_paused(&self.logger);
+ if chan.is_shutdown() {
update_maps_on_chan_removal!(self, short_to_id, chan);
- failed_channels.push(chan.force_shutdown(true));
- if let Ok(update) = self.get_channel_update_for_broadcast(&chan) {
- pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
- msg: update
- });
- }
self.issue_channel_close_events(chan, ClosureReason::DisconnectedPeer);
- false
+ return false;
} else {
- true
+ no_channels_remain = false;
}
- });
- } else {
- log_debug!(self.logger, "Marking channels with {} disconnected and generating channel_updates", log_pubkey!(counterparty_node_id));
- channel_state.by_id.retain(|_, chan| {
- if chan.get_counterparty_node_id() == *counterparty_node_id {
- chan.remove_uncommitted_htlcs_and_mark_paused(&self.logger);
- if chan.is_shutdown() {
- update_maps_on_chan_removal!(self, short_to_id, chan);
- self.issue_channel_close_events(chan, ClosureReason::DisconnectedPeer);
- return false;
- } else {
- no_channels_remain = false;
- }
- }
- true
- })
- }
+ }
+ true
+ });
pending_msg_events.retain(|msg| {
match msg {
&events::MessageSendEvent::SendAcceptChannel { ref node_id, .. } => node_id != counterparty_node_id,
(2, channel_id, required),
(3, channel_type, option),
(4, counterparty, required),
+ (5, outbound_scid_alias, option),
(6, funding_txo, option),
(8, short_channel_id, option),
(10, channel_value_satoshis, required),
tx = Transaction { version: 2, lock_time: 0, input: Vec::new(), output: vec![TxOut {
value: 8_000_000, script_pubkey: output_script,
}]};
- node_a.funding_transaction_generated(&temporary_channel_id, tx.clone()).unwrap();
+ node_a.funding_transaction_generated(&temporary_channel_id, &node_b.get_our_node_id(), tx.clone()).unwrap();
} else { panic!(); }
node_b.handle_funding_created(&node_a.get_our_node_id(), &get_event_msg!(node_a_holder, MessageSendEvent::SendFundingCreated, node_b.get_our_node_id()));
projects / rust-lightning / blobdiff