Outbound payments: pass session privs by reference

We need to stop passing this Vec by value for the next commit so we can pass it
to a different method.

Author: valentinewallace

lightning/src/ln/outbound_payment.rs

@@ -811,7 +811,7 @@ impl OutboundPayments {
 	{
 		let onion_session_privs = self.add_new_pending_payment(payment_hash, recipient_onion.clone(), payment_id, None, route, None, None, entropy_source, best_block_height)?;
 		self.pay_route_internal(route, payment_hash, &recipient_onion, None, None, payment_id, None,
-			onion_session_privs, node_signer, best_block_height, &send_payment_along_path)
+			&onion_session_privs, node_signer, best_block_height, &send_payment_along_path)
 			.map_err(|e| { self.remove_outbound_if_all_failed(payment_id, &e); e })
 	}
 
@@ -991,7 +991,7 @@ impl OutboundPayments {
 
 		let result = self.pay_route_internal(
 			&route, payment_hash, &recipient_onion, keysend_preimage, invoice_request, payment_id,
-			Some(route_params.final_value_msat), onion_session_privs, node_signer, best_block_height,
+			Some(route_params.final_value_msat), &onion_session_privs, node_signer, best_block_height,
 			&send_payment_along_path
 		);
 		log_info!(
@@ -1276,7 +1276,7 @@ impl OutboundPayments {
 			})?;
 
 		let res = self.pay_route_internal(&route, payment_hash, &recipient_onion,
-			keysend_preimage, None, payment_id, None, onion_session_privs, node_signer,
+			keysend_preimage, None, payment_id, None, &onion_session_privs, node_signer,
 			best_block_height, &send_payment_along_path);
 		log_info!(logger, "Sending payment with id {} and hash {} returned {:?}",
 			payment_id, payment_hash, res);
@@ -1433,7 +1433,7 @@ impl OutboundPayments {
 			}
 		};
 		let res = self.pay_route_internal(&route, payment_hash, &recipient_onion, keysend_preimage,
-			invoice_request.as_ref(), payment_id, Some(total_msat), onion_session_privs, node_signer,
+			invoice_request.as_ref(), payment_id, Some(total_msat), &onion_session_privs, node_signer,
 			best_block_height, &send_payment_along_path);
 		log_info!(logger, "Result retrying payment id {}: {:?}", &payment_id, res);
 		if let Err(e) = res {
@@ -1549,7 +1549,7 @@ impl OutboundPayments {
 
 		let recipient_onion_fields = RecipientOnionFields::spontaneous_empty();
 		match self.pay_route_internal(&route, payment_hash, &recipient_onion_fields,
-			None, None, payment_id, None, onion_session_privs, node_signer, best_block_height,
+			None, None, payment_id, None, &onion_session_privs, node_signer, best_block_height,
 			&send_payment_along_path
 		) {
 			Ok(()) => Ok((payment_hash, payment_id)),
@@ -1740,7 +1740,7 @@ impl OutboundPayments {
 	fn pay_route_internal<NS: Deref, F>(
 		&self, route: &Route, payment_hash: PaymentHash, recipient_onion: &RecipientOnionFields,
 		keysend_preimage: Option<PaymentPreimage>, invoice_request: Option<&InvoiceRequest>,
-		payment_id: PaymentId, recv_value_msat: Option<u64>, onion_session_privs: Vec<[u8; 32]>,
+		payment_id: PaymentId, recv_value_msat: Option<u64>, onion_session_privs: &Vec<[u8; 32]>,
 		node_signer: &NS, best_block_height: u32, send_payment_along_path: &F
 	) -> Result<(), PaymentSendFailure>
 	where
@@ -1795,7 +1795,7 @@ impl OutboundPayments {
 			let mut path_res = send_payment_along_path(SendAlongPathArgs {
 				path: &path, payment_hash: &payment_hash, recipient_onion, total_value,
 				cur_height, payment_id, keysend_preimage: &keysend_preimage, invoice_request,
-				session_priv_bytes
+				session_priv_bytes: *session_priv_bytes
 			});
 			match path_res {
 				Ok(_) => {},
@@ -1879,7 +1879,7 @@ impl OutboundPayments {
 		F: Fn(SendAlongPathArgs) -> Result<(), APIError>,
 	{
 		self.pay_route_internal(route, payment_hash, &recipient_onion,
-			keysend_preimage, None, payment_id, recv_value_msat, onion_session_privs,
+			keysend_preimage, None, payment_id, recv_value_msat, &onion_session_privs,
 			node_signer, best_block_height, &send_payment_along_path)
 			.map_err(|e| { self.remove_outbound_if_all_failed(payment_id, &e); e })
 	}