Add RouteBlinding feature flag

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

diff --git a/lightning/src/ln/features.rs b/lightning/src/ln/features.rs
index 08df63e7033b03f92c88aeb8b133a47b6cb8ef2e..df5c0abf25f2a27f8d81589447435b61a15589ef 100644 (file)
--- a/lightning/src/ln/features.rs
+++ b/lightning/src/ln/features.rs
@@ -45,6 +45,8 @@
 //!     and HTLC transactions are pre-signed with zero fee (see
 //!     [BOLT-3](https://github.com/lightning/bolts/blob/master/03-transactions.md) for more
 //!     information).
+//! - `RouteBlinding` - requires/supports that a node can relay payments over blinded paths
+//!     (see [BOLT-4](https://github.com/lightning/bolts/blob/master/04-onion-routing.md#route-blinding) for more information).
 //! - `ShutdownAnySegwit` - requires/supports that future segwit versions are allowed in `shutdown`
 //!     (see [BOLT-2](https://github.com/lightning/bolts/blob/master/02-peer-protocol.md) for more information).
 //! - `OnionMessages` - requires/supports forwarding onion messages
@@ -143,7 +145,7 @@ mod sealed {
                // Byte 2
                BasicMPP | Wumbo | AnchorsNonzeroFeeHtlcTx | AnchorsZeroFeeHtlcTx,
                // Byte 3
-               ShutdownAnySegwit | Taproot,
+               RouteBlinding | ShutdownAnySegwit | Taproot,
                // Byte 4
                OnionMessages,
                // Byte 5
@@ -159,7 +161,7 @@ mod sealed {
                // Byte 2
                BasicMPP | Wumbo | AnchorsNonzeroFeeHtlcTx | AnchorsZeroFeeHtlcTx,
                // Byte 3
-               ShutdownAnySegwit | Taproot,
+               RouteBlinding | ShutdownAnySegwit | Taproot,
                // Byte 4
                OnionMessages,
                // Byte 5
@@ -391,6 +393,9 @@ mod sealed {
        define_feature!(23, AnchorsZeroFeeHtlcTx, [InitContext, NodeContext, ChannelTypeContext],
                "Feature flags for `option_anchors_zero_fee_htlc_tx`.", set_anchors_zero_fee_htlc_tx_optional,
                set_anchors_zero_fee_htlc_tx_required, supports_anchors_zero_fee_htlc_tx, requires_anchors_zero_fee_htlc_tx);
+       define_feature!(25, RouteBlinding, [InitContext, NodeContext],
+               "Feature flags for `option_route_blinding`.", set_route_blinding_optional,
+               set_route_blinding_required, supports_route_blinding, requires_route_blinding);
        define_feature!(27, ShutdownAnySegwit, [InitContext, NodeContext],
                "Feature flags for `opt_shutdown_anysegwit`.", set_shutdown_any_segwit_optional,
                set_shutdown_any_segwit_required, supports_shutdown_anysegwit, requires_shutdown_anysegwit);
@@ -1053,6 +1058,7 @@ mod tests {
                init_features.set_basic_mpp_optional();
                init_features.set_wumbo_optional();
                init_features.set_anchors_zero_fee_htlc_tx_optional();
+               init_features.set_route_blinding_optional();
                init_features.set_shutdown_any_segwit_optional();
                init_features.set_onion_messages_optional();
                init_features.set_channel_type_optional();
@@ -1069,7 +1075,7 @@ mod tests {
                        // - option_data_loss_protect (req)
                        // - var_onion_optin (req) | static_remote_key (req) | payment_secret(req)
                        // - basic_mpp | wumbo | option_anchors_zero_fee_htlc_tx
-                       // - opt_shutdown_anysegwit
+                       // - option_route_blinding | opt_shutdown_anysegwit
                        // - onion_messages
                        // - option_channel_type | option_scid_alias
                        // - option_zeroconf
@@ -1077,7 +1083,7 @@ mod tests {
                        assert_eq!(node_features.flags[0], 0b00000001);
                        assert_eq!(node_features.flags[1], 0b01010001);
                        assert_eq!(node_features.flags[2], 0b10001010);
-                       assert_eq!(node_features.flags[3], 0b00001000);
+                       assert_eq!(node_features.flags[3], 0b00001010);
                        assert_eq!(node_features.flags[4], 0b10000000);
                        assert_eq!(node_features.flags[5], 0b10100000);
                        assert_eq!(node_features.flags[6], 0b00001000);