f - changes for MessageRouter interface

Author: jkczyz

lightning/src/onion_message/messenger.rs

@@ -250,8 +250,8 @@ pub enum ResponseError {
 	GetNodeIdFailed,
 	/// No reply path in the onion message.
 	NoReplyPath,
-	/// Could not find a route to the destination.
-	RouteNotFound,
+	/// Could not find a path to the destination.
+	PathNotFound,
 	/// Failed to send the reply.
 	Sending(SendError),
 }
@@ -371,20 +371,20 @@ where
 			},
 		};
 
-		let intermediate_nodes = match self.message_router.find_route(&sender, &destination) {
-			Ok(intermediate_nodes) => intermediate_nodes,
+		let path = match self.message_router.find_path(&sender, destination) {
+			Ok(path) => path,
 			Err(()) => {
 				log_info!(
-					self.logger, "No route to respond to onion message with path_id {:02x?}",
+					self.logger, "No path to respond to onion message with path_id {:02x?}",
 					path_id
 				);
-				return error_handler.handle_response_error(ResponseError::RouteNotFound);
+				return error_handler.handle_response_error(ResponseError::PathNotFound);
 			},
 		};
 
 		log_info!(self.logger, "Responding to onion message with path_id {:02x?}", path_id);
 
-		if let Err(e) = self.send_onion_message(&intermediate_nodes, destination, response, None) {
+		if let Err(e) = self.send_onion_message(path, response, None) {
 			log_info!(
 				self.logger, "Failed responding to onion message with path_id {:02x?}: {:?}",
 				path_id, e