Merge pull request #2138 from swilliamson5/replace-our-max-htlcs-constant

[rust-lightning] / lightning / src / util / config.rs

diff --git a/lightning/src/util/config.rs b/lightning/src/util/config.rs
index ec34f5322890f2095fcc56f22d237dedc2b76a56..ba00158c635f5ef7fb85663b9bc8702b03695e28 100644 (file)
--- a/lightning/src/util/config.rs
+++ b/lightning/src/util/config.rs
@@ -170,6 +170,19 @@ pub struct ChannelHandshakeConfig {
        /// [`DecodeError::InvalidValue`]: crate::ln::msgs::DecodeError::InvalidValue
        /// [`SIGHASH_SINGLE + update_fee Considered Harmful`]: https://lists.linuxfoundation.org/pipermail/lightning-dev/2020-September/002796.html
        pub negotiate_anchors_zero_fee_htlc_tx: bool,
+
+       /// The maximum number of HTLCs in-flight from our counterparty towards us at the same time.
+       ///
+       /// Increasing the value can help improve liquidity and stability in
+       /// routing at the cost of higher long term disk / DB usage.
+       ///
+       /// Note: Versions of LDK earlier than v0.0.115 will fail to read channels with a configuration
+       /// other than the default value.
+       ///
+       /// Default value: 50
+       /// Maximum value: 483, any values larger will be treated as 483.
+       ///                     This is the BOLT #2 spec limit on `max_accepted_htlcs`.
+       pub our_max_accepted_htlcs: u16,
 }
 
 impl Default for ChannelHandshakeConfig {
@@ -185,6 +198,7 @@ impl Default for ChannelHandshakeConfig {
                        their_channel_reserve_proportional_millionths: 10_000,
                        #[cfg(anchors)]
                        negotiate_anchors_zero_fee_htlc_tx: false,
+                       our_max_accepted_htlcs: 50,
                }
        }
 }