Track previous ChannelConfig and expire after enough ticks

[rust-lightning] / lightning / src / ln / channelmanager.rs

diff --git a/lightning/src/ln/channelmanager.rs b/lightning/src/ln/channelmanager.rs
index 58d84eb0dbb078ae5f0ab0d1b11393c7601a7508..fcd53b502f24946b2d8dee96bb636075834b2e6d 100644 (file)
--- a/lightning/src/ln/channelmanager.rs
+++ b/lightning/src/ln/channelmanager.rs
@@ -3511,6 +3511,8 @@ impl<Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> ChannelMana
        ///  * Broadcasting `ChannelUpdate` messages if we've been disconnected from our peer for more
        ///    than a minute, informing the network that they should no longer attempt to route over
        ///    the channel.
+       ///  * Expiring a channel's previous `ChannelConfig` if necessary to only allow forwarding HTLCs
+       ///    with the current `ChannelConfig`.
        ///
        /// Note that this may cause reentrancy through `chain::Watch::update_channel` calls or feerate
        /// estimate fetches.
@@ -3569,6 +3571,8 @@ impl<Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> ChannelMana
                                                _ => {},
                                        }
 
+                                       chan.maybe_expire_prev_config();
+
                                        true
                                });