/// onion payload if we're the introduction node. Useful for calculating the next hop's
/// [`msgs::UpdateAddHTLC::blinding_point`].
pub inbound_blinding_point: PublicKey,
- // Another field will be added here when we support forwarding as a non-intro node.
+ /// If needed, this determines how this HTLC should be failed backwards, based on whether we are
+ /// the introduction node.
+ pub failure: BlindedFailure,
}
impl PendingHTLCRouting {
// Used to override the onion failure code and data if the HTLC is blinded.
fn blinded_failure(&self) -> Option<BlindedFailure> {
- // TODO: needs update when we support forwarding blinded HTLCs as non-intro node
match self {
- Self::Forward { blinded: Some(_), .. } => Some(BlindedFailure::FromIntroductionNode),
+ Self::Forward { blinded: Some(BlindedForward { failure, .. }), .. } => Some(*failure),
Self::Receive { requires_blinded_error: true, .. } => Some(BlindedFailure::FromBlindedNode),
_ => None,
}
},
}
-// Used for failing blinded HTLCs backwards correctly.
+/// Whether this blinded HTLC is being failed backwards by the introduction node or a blinded node,
+/// which determines the failure message that should be used.
#[derive(Clone, Copy, Debug, Hash, PartialEq, Eq)]
-enum BlindedFailure {
+pub enum BlindedFailure {
+ /// This HTLC is being failed backwards by the introduction node, and thus should be failed with
+ /// [`msgs::UpdateFailHTLC`] and error code `0x8000|0x4000|24`.
FromIntroductionNode,
+ /// This HTLC is being failed backwards by a blinded node within the path, and thus should be
+ /// failed with [`msgs::UpdateFailMalformedHTLC`] and error code `0x8000|0x4000|24`.
FromBlindedNode,
}
reason: shutdown_res.closure_reason,
counterparty_node_id: Some(shutdown_res.counterparty_node_id),
channel_capacity_sats: Some(shutdown_res.channel_capacity_satoshis),
+ channel_funding_txo: shutdown_res.channel_funding_txo,
}, None));
if let Some(transaction) = shutdown_res.unbroadcasted_funding_tx {
let is_intro_node_forward = match next_hop {
onion_utils::Hop::Forward {
- // TODO: update this when we support blinded forwarding as non-intro node
- next_hop_data: msgs::InboundOnionPayload::BlindedForward { .. }, ..
+ next_hop_data: msgs::InboundOnionPayload::BlindedForward {
+ intro_node_blinding_point: Some(_), ..
+ }, ..
} => true,
_ => false,
};
incoming_packet_shared_secret: incoming_shared_secret,
// Phantom payments are only PendingHTLCRouting::Receive.
phantom_shared_secret: None,
- blinded_failure: blinded.map(|_| BlindedFailure::FromIntroductionNode),
+ blinded_failure: blinded.map(|b| b.failure),
});
let next_blinding_point = blinded.and_then(|b| {
let encrypted_tlvs_ss = self.node_signer.ecdh(
features.set_channel_type_optional();
features.set_scid_privacy_optional();
features.set_zero_conf_optional();
+ features.set_route_blinding_optional();
if config.channel_handshake_config.negotiate_anchors_zero_fee_htlc_tx {
features.set_anchors_zero_fee_htlc_tx_optional();
}
impl_writeable_tlv_based!(BlindedForward, {
(0, inbound_blinding_point, required),
+ (1, failure, (default_value, BlindedFailure::FromIntroductionNode)),
});
impl_writeable_tlv_based_enum!(PendingHTLCRouting,
reason: ClosureReason::OutdatedChannelManager,
counterparty_node_id: Some(channel.context.get_counterparty_node_id()),
channel_capacity_sats: Some(channel.context.get_value_satoshis()),
+ channel_funding_txo: channel.context.get_funding_txo(),
}, None));
for (channel_htlc_source, payment_hash) in channel.inflight_htlc_sources() {
let mut found_htlc = false;
reason: ClosureReason::DisconnectedPeer,
counterparty_node_id: Some(channel.context.get_counterparty_node_id()),
channel_capacity_sats: Some(channel.context.get_value_satoshis()),
+ channel_funding_txo: channel.context.get_funding_txo(),
}, None));
} else {
log_error!(logger, "Missing ChannelMonitor for channel {} needed by ChannelManager.", &channel.context.channel_id());