X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning%2Fsrc%2Fln%2Fmsgs.rs;h=747107c08221c41b04a5283a91804031d981325f;hb=62236c70d863bf9456e28a3a1ba784b2e4680a88;hp=ffc595ccedab5bbf547f0f33d1426e0214e4e6bc;hpb=12687d75d5a0eba4bc691998e51a5313c715e559;p=rust-lightning

diff --git a/lightning/src/ln/msgs.rs b/lightning/src/ln/msgs.rs
index ffc595cc..747107c0 100644
--- a/lightning/src/ln/msgs.rs
+++ b/lightning/src/ln/msgs.rs
@@ -40,7 +40,7 @@ use core::fmt::Debug;
 use io::{self, Read};
 use io_extras::read_to_end;
 
-use util::events::MessageSendEventsProvider;
+use util::events::{MessageSendEventsProvider, OnionMessageProvider};
 use util::logger;
 use util::ser::{BigSize, LengthReadable, Readable, ReadableArgs, Writeable, Writer, FixedLengthReader, HighZeroBytesDroppedBigSize, Hostname};
 
@@ -896,6 +896,19 @@ pub trait ChannelMessageHandler : MessageSendEventsProvider {
 	// Error:
 	/// Handle an incoming error message from the given peer.
 	fn handle_error(&self, their_node_id: &PublicKey, msg: &ErrorMessage);
+
+	// Handler information:
+	/// Gets the node feature flags which this handler itself supports. All available handlers are
+	/// queried similarly and their feature flags are OR'd together to form the [`NodeFeatures`]
+	/// which are broadcasted in our [`NodeAnnouncement`] message.
+	fn provided_node_features(&self) -> NodeFeatures;
+
+	/// Gets the init feature flags which should be sent to the given peer. All available handlers
+	/// are queried similarly and their feature flags are OR'd together to form the [`InitFeatures`]
+	/// which are sent in our [`Init`] message.
+	///
+	/// Note that this method is called before [`Self::peer_connected`].
+	fn provided_init_features(&self, their_node_id: &PublicKey) -> InitFeatures;
 }
 
 /// A trait to describe an object which can receive routing messages.
@@ -943,6 +956,43 @@ pub trait RoutingMessageHandler : MessageSendEventsProvider {
 	/// Handles when a peer asks us to send routing gossip messages for a
 	/// list of short_channel_ids.
 	fn handle_query_short_channel_ids(&self, their_node_id: &PublicKey, msg: QueryShortChannelIds) -> Result<(), LightningError>;
+
+	// Handler information:
+	/// Gets the node feature flags which this handler itself supports. All available handlers are
+	/// queried similarly and their feature flags are OR'd together to form the [`NodeFeatures`]
+	/// which are broadcasted in our [`NodeAnnouncement`] message.
+	fn provided_node_features(&self) -> NodeFeatures;
+	/// Gets the init feature flags which should be sent to the given peer. All available handlers
+	/// are queried similarly and their feature flags are OR'd together to form the [`InitFeatures`]
+	/// which are sent in our [`Init`] message.
+	///
+	/// Note that this method is called before [`Self::peer_connected`].
+	fn provided_init_features(&self, their_node_id: &PublicKey) -> InitFeatures;
+}
+
+/// A trait to describe an object that can receive onion messages.
+pub trait OnionMessageHandler : OnionMessageProvider {
+	/// Handle an incoming onion_message message from the given peer.
+	fn handle_onion_message(&self, peer_node_id: &PublicKey, msg: &OnionMessage);
+	/// Called when a connection is established with a peer. Can be used to track which peers
+	/// advertise onion message support and are online.
+	fn peer_connected(&self, their_node_id: &PublicKey, init: &Init);
+	/// Indicates a connection to the peer failed/an existing connection was lost. Allows handlers to
+	/// drop and refuse to forward onion messages to this peer.
+	fn peer_disconnected(&self, their_node_id: &PublicKey, no_connection_possible: bool);
+
+	// Handler information:
+	/// Gets the node feature flags which this handler itself supports. All available handlers are
+	/// queried similarly and their feature flags are OR'd together to form the [`NodeFeatures`]
+	/// which are broadcasted in our [`NodeAnnouncement`] message.
+	fn provided_node_features(&self) -> NodeFeatures;
+
+	/// Gets the init feature flags which should be sent to the given peer. All available handlers
+	/// are queried similarly and their feature flags are OR'd together to form the [`InitFeatures`]
+	/// which are sent in our [`Init`] message.
+	///
+	/// Note that this method is called before [`Self::peer_connected`].
+	fn provided_init_features(&self, their_node_id: &PublicKey) -> InitFeatures;
 }
 
 mod fuzzy_internal_msgs {