From ffb0d8329824d5ee86107307d1cac37ea9b57290 Mon Sep 17 00:00:00 2001 From: Jeffrey Czyz Date: Thu, 2 Mar 2023 14:57:07 -0600 Subject: [PATCH] Add RouteBlinding feature flag The RouteBlinding feature flag is signals support for relaying payments over blinded paths. It is used for paying BOLT 12 invoices, which are required to included at least one blinded path. --- lightning/src/ln/features.rs | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/lightning/src/ln/features.rs b/lightning/src/ln/features.rs index 08df63e7..df5c0abf 100644 --- 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); -- 2.30.2