fixup! Start publishing PaymentForwarded events.

Author: G8XSU

bindings/ldk_node.udl

@@ -277,7 +277,7 @@ interface Event {
 	PaymentFailed(PaymentId? payment_id, PaymentHash? payment_hash, PaymentFailureReason? reason);
 	PaymentReceived(PaymentId? payment_id, PaymentHash payment_hash, u64 amount_msat);
 	PaymentClaimable(PaymentId payment_id, PaymentHash payment_hash, u64 claimable_amount_msat, u32? claim_deadline);
-	PaymentForwarded(ChannelId prev_channel_id, ChannelId next_channel_id, UserChannelId prev_user_channel_id, UserChannelId? next_user_channel_id, u64? total_fee_earned_msat, u64? skimmed_fee_msat, boolean claim_from_onchain_tx, u64? outbound_amount_forwarded_msat);
+	PaymentForwarded(ChannelId prev_channel_id, ChannelId next_channel_id, UserChannelId? prev_user_channel_id, UserChannelId? next_user_channel_id, u64? total_fee_earned_msat, u64? skimmed_fee_msat, boolean claim_from_onchain_tx, u64? outbound_amount_forwarded_msat);
 	ChannelPending(ChannelId channel_id, UserChannelId user_channel_id, ChannelId former_temporary_channel_id, PublicKey counterparty_node_id, OutPoint funding_txo);
 	ChannelReady(ChannelId channel_id, UserChannelId user_channel_id, PublicKey? counterparty_node_id);
 	ChannelClosed(ChannelId channel_id, UserChannelId user_channel_id, PublicKey? counterparty_node_id, ClosureReason? reason);

src/event.rs

@@ -112,7 +112,9 @@ pub enum Event {
 		next_channel_id: ChannelId,
 
 		/// The `user_channel_id` of the incoming channel between the previous node and us.
-		prev_user_channel_id: UserChannelId,
+		///
+		/// Will only be `None` for events serialized with LDK Node v0.3.0 or prior.
+		prev_user_channel_id: Option<UserChannelId>,
 
 		/// The `user_channel_id` of the outgoing channel between the next node and us.
 		///
@@ -1137,7 +1139,7 @@ where
 				let event = Event::PaymentForwarded {
 					prev_channel_id: prev_channel_id.expect("prev_channel_id expected for events generated by LDK versions greater than 0.0.107."),
 					next_channel_id: next_channel_id.expect("next_channel_id expected for events generated by LDK versions greater than 0.0.107."),
-					prev_user_channel_id: UserChannelId(prev_user_channel_id.expect("prev_user_channel_id expected for events generated by LDK versions greater than 0.0.122.")),
+					prev_user_channel_id: prev_user_channel_id.map(|u|UserChannelId(u)),
 					next_user_channel_id: next_user_channel_id.map(|u| UserChannelId(u)),
 					total_fee_earned_msat,
 					skimmed_fee_msat,