X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning%2Fsrc%2Fln%2Fmsgs.rs;h=0c23d4425f8663ebe6fce310692b2dc11bc89e08;hb=c383f06538ac664fe3312daf765595ba106d5b98;hp=3dd4a6da70ccda8bde8a2e22f50db9c12e12d9cd;hpb=f09c37082c7afc4c083c33162b2c63c910028a6b;p=rust-lightning

diff --git a/lightning/src/ln/msgs.rs b/lightning/src/ln/msgs.rs
index 3dd4a6da..0c23d442 100644
--- a/lightning/src/ln/msgs.rs
+++ b/lightning/src/ln/msgs.rs
@@ -610,6 +610,11 @@ pub struct UpdateAddHTLC {
 	pub payment_hash: PaymentHash,
 	/// The expiry height of the HTLC
 	pub cltv_expiry: u32,
+	/// The extra fee skimmed by the sender of this message. See
+	/// [`ChannelConfig::accept_underpaying_htlcs`].
+	///
+	/// [`ChannelConfig::accept_underpaying_htlcs`]: crate::util::config::ChannelConfig::accept_underpaying_htlcs
+	pub skimmed_fee_msat: Option<u64>,
 	pub(crate) onion_routing_packet: OnionPacket,
 }
 
@@ -968,7 +973,11 @@ pub struct UnsignedChannelAnnouncement {
 	pub bitcoin_key_1: NodeId,
 	/// The funding key for the second node
 	pub bitcoin_key_2: NodeId,
-	pub(crate) excess_data: Vec<u8>,
+	/// Excess data which was signed as a part of the message which we do not (yet) understand how
+	/// to decode.
+	///
+	/// This is stored to ensure forward-compatibility as new fields are added to the lightning gossip protocol.
+	pub excess_data: Vec<u8>,
 }
 /// A [`channel_announcement`] message to be sent to or received from a peer.
 ///
@@ -1903,8 +1912,10 @@ impl_writeable_msg!(UpdateAddHTLC, {
 	amount_msat,
 	payment_hash,
 	cltv_expiry,
-	onion_routing_packet
-}, {});
+	onion_routing_packet,
+}, {
+	(65537, skimmed_fee_msat, option)
+});
 
 impl Readable for OnionMessage {
 	fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
@@ -3330,7 +3341,8 @@ mod tests {
 			amount_msat: 3608586615801332854,
 			payment_hash: PaymentHash([1; 32]),
 			cltv_expiry: 821716,
-			onion_routing_packet
+			onion_routing_packet,
+			skimmed_fee_msat: None,
 		};
 		let encoded_value = update_add_htlc.encode();
 		let target_value = hex::decode("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").unwrap();
@@ -3752,7 +3764,7 @@ mod tests {
 		let test_bytes = vec![42u8; 1000];
 		if let OnionHopDataFormat::NonFinalNode { short_channel_id } = payload.format {
 			_encode_varint_length_prefixed_tlv!(&mut encoded_payload, {
-				(1, test_bytes, vec_type),
+				(1, test_bytes, required_vec),
 				(2, HighZeroBytesDroppedBigSize(payload.amt_to_forward), required),
 				(4, HighZeroBytesDroppedBigSize(payload.outgoing_cltv_value), required),
 				(6, short_channel_id, required)