Send PaymentForwardedFailed if no forwardable HTLC

Author: jurvis

lightning/src/ln/channelmanager.rs

@@ -3982,7 +3982,7 @@ impl<Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> ChannelMana
 				pending_events.push(path_failure);
 				if let Some(ev) = full_failure_ev { pending_events.push(ev); }
 			},
-			HTLCSource::PreviousHopData(HTLCPreviousHopData { short_channel_id, htlc_id, incoming_packet_shared_secret, phantom_shared_secret, .. }) => {
+			HTLCSource::PreviousHopData(HTLCPreviousHopData { short_channel_id, htlc_id, incoming_packet_shared_secret, phantom_shared_secret, outpoint }) => {
 				let err_packet = match onion_error {
 					HTLCFailReason::Reason { failure_code, data } => {
 						log_trace!(self.logger, "Failing HTLC with payment_hash {} backwards from us with code {}", log_bytes!(payment_hash.0), failure_code);
@@ -4020,6 +4020,11 @@ impl<Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> ChannelMana
 						time_forwardable: time
 					});
 				}
+				
+				let mut pending_events = self.pending_events.lock().unwrap();
+				pending_events.push(events::Event::PaymentForwardedFailed {
+					source_channel_id: outpoint.to_channel_id() , sink_node_id: self.get_our_node_id()
+				});
 			},
 		}
 	}

lightning/src/util/events.rs

@@ -448,7 +448,7 @@ pub enum Event {
 	/// Indicates that a payment has failed to be forwarded through us
 	PaymentForwardedFailed {
 		/// The channel_id of the sender
-		source_channel_id: u64,
+		source_channel_id: [u8; 32],
 		/// The node_id of the receiver where forwarding has failed
 		sink_node_id: PublicKey
 	},