Use ChannelUpdate::TYPE const.

Author: tnull

lightning/src/ln/channelmanager.rs

@@ -48,6 +48,7 @@ use ln::msgs;
 use ln::msgs::NetAddress;
 use ln::onion_utils;
 use ln::msgs::{ChannelMessageHandler, DecodeError, LightningError, MAX_VALUE_MSAT, OptionalField};
+use ln::wire::Encode;
 use chain::keysinterface::{Sign, KeysInterface, KeysManager, InMemorySigner, Recipient};
 use util::config::UserConfig;
 use util::events::{EventHandler, EventsProvider, MessageSendEvent, MessageSendEventsProvider, ClosureReason};
@@ -3546,7 +3547,7 @@ impl<Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> ChannelMana
 				0u16.write(&mut enc).expect("Writes cannot fail");
 			}
 			(upd.serialized_length() as u16 + 2).write(&mut enc).expect("Writes cannot fail");
-			let chan_update_type = u16::from_be_bytes([0x01, 0x02]);
+			let chan_update_type = msgs::ChannelUpdate::TYPE;
 			chan_update_type.write(&mut enc).expect("Writes cannot fail");
 			upd.write(&mut enc).expect("Writes cannot fail");
 			(desired_err_code, enc.0)

lightning/src/ln/onion_utils.rs

@@ -10,6 +10,7 @@
 use ln::{PaymentHash, PaymentPreimage, PaymentSecret};
 use ln::channelmanager::HTLCSource;
 use ln::msgs;
+use ln::wire::Encode;
 use routing::network_graph::NetworkUpdate;
 use routing::router::RouteHop;
 use util::chacha20::{ChaCha20, ChaChaReader};
@@ -410,7 +411,7 @@ pub(super) fn process_onion_failure<T: secp256k1::Signing, L: Deref>(secp_ctx: &
 									// been updated to indicate that they *are* included, but many
 									// nodes still send messages without the type bytes, so we
 									// support both here.
-									if update_slice.len() > 2 && update_slice[0..2] == [0x01, 0x02] {
+									if update_slice.len() > 2 && update_slice[0..2] == msgs::ChannelUpdate::TYPE.to_be_bytes() {
 										update_slice = &update_slice[2..];
 									}
 									if let Ok(chan_update) = msgs::ChannelUpdate::read(&mut Cursor::new(&update_slice)) {