From: Matt Corallo <git@bluematt.me>
Date: Tue, 12 May 2020 01:08:11 +0000 (-0400)
Subject: Add missing comment on why last_update_message is None
X-Git-Tag: v0.0.12~66^2~3
X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=commitdiff_plain;h=57ac2ec1b63ceab6d763eedcb65ec5983e509195;p=rust-lightning

Add missing comment on why last_update_message is None
---

diff --git a/lightning/src/routing/network_graph.rs b/lightning/src/routing/network_graph.rs
index dd6d7d7ed..b454216b4 100644
--- a/lightning/src/routing/network_graph.rs
+++ b/lightning/src/routing/network_graph.rs
@@ -217,6 +217,9 @@ pub struct DirectionalChannelInfo {
 	/// Fees charged when the channel is used for routing
 	pub fees: RoutingFees,
 	/// Most recent update for the channel received from the network
+	/// Mostly redundant with the data we store in fields explicitly.
+	/// Everything else is useful only for sending out for initial routing sync.
+	/// Not stored if contains excess data to prevent DoS.
 	pub last_update_message: Option<msgs::ChannelUpdate>,
 }