Implement Flat Features
[rust-lightning] / lightning / src / ln / peer_handler.rs
index 73d9939c15b358d39de41c884cc6815c3c8b3910..ff00c350e732dbf17b64e8f6deae0ed3028dda45 100644 (file)
@@ -103,8 +103,7 @@ struct Peer {
        channel_encryptor: PeerChannelEncryptor,
        outbound: bool,
        their_node_id: Option<PublicKey>,
-       their_global_features: Option<msgs::GlobalFeatures>,
-       their_local_features: Option<msgs::LocalFeatures>,
+       their_features: Option<msgs::InitFeatures>,
 
        pending_outbound_buffer: LinkedList<Vec<u8>>,
        pending_outbound_buffer_first_msg_offset: usize,
@@ -238,7 +237,7 @@ impl<Descriptor: SocketDescriptor> PeerManager<Descriptor> {
        pub fn get_peer_node_ids(&self) -> Vec<PublicKey> {
                let peers = self.peers.lock().unwrap();
                peers.peers.values().filter_map(|p| {
-                       if !p.channel_encryptor.is_ready_for_encryption() || p.their_global_features.is_none() {
+                       if !p.channel_encryptor.is_ready_for_encryption() || p.their_features.is_none() {
                                return None;
                        }
                        p.their_node_id
@@ -276,8 +275,7 @@ impl<Descriptor: SocketDescriptor> PeerManager<Descriptor> {
                        channel_encryptor: peer_encryptor,
                        outbound: true,
                        their_node_id: None,
-                       their_global_features: None,
-                       their_local_features: None,
+                       their_features: None,
 
                        pending_outbound_buffer: LinkedList::new(),
                        pending_outbound_buffer_first_msg_offset: 0,
@@ -314,8 +312,7 @@ impl<Descriptor: SocketDescriptor> PeerManager<Descriptor> {
                        channel_encryptor: peer_encryptor,
                        outbound: false,
                        their_node_id: None,
-                       their_global_features: None,
-                       their_local_features: None,
+                       their_features: None,
 
                        pending_outbound_buffer: LinkedList::new(),
                        pending_outbound_buffer_first_msg_offset: 0,
@@ -570,14 +567,13 @@ impl<Descriptor: SocketDescriptor> PeerManager<Descriptor> {
 
                                                                        peer.their_node_id = Some(their_node_id);
                                                                        insert_node_id!();
-                                                                       let mut local_features = msgs::LocalFeatures::new();
+                                                                       let mut features = msgs::InitFeatures::new();
                                                                        if self.initial_syncs_sent.load(Ordering::Acquire) < INITIAL_SYNCS_TO_SEND {
                                                                                self.initial_syncs_sent.fetch_add(1, Ordering::AcqRel);
-                                                                               local_features.set_initial_routing_sync();
+                                                                               features.set_initial_routing_sync();
                                                                        }
                                                                        encode_and_send_msg!(msgs::Init {
-                                                                               global_features: msgs::GlobalFeatures::new(),
-                                                                               local_features,
+                                                                               features,
                                                                        }, 16);
                                                                },
                                                                NextNoiseStep::ActThree => {
@@ -606,7 +602,7 @@ impl<Descriptor: SocketDescriptor> PeerManager<Descriptor> {
 
                                                                                let msg_type = byte_utils::slice_to_be16(&msg_data[0..2]);
                                                                                log_trace!(self, "Received message of type {} from {}", msg_type, log_pubkey!(peer.their_node_id.unwrap()));
-                                                                               if msg_type != 16 && peer.their_global_features.is_none() {
+                                                                               if msg_type != 16 && peer.their_features.is_none() {
                                                                                        // Need an init message as first message
                                                                                        log_trace!(self, "Peer {} sent non-Init first message", log_pubkey!(peer.their_node_id.unwrap()));
                                                                                        return Err(PeerHandleError{ no_connection_possible: false });
@@ -616,42 +612,40 @@ impl<Descriptor: SocketDescriptor> PeerManager<Descriptor> {
                                                                                        // Connection control:
                                                                                        16 => {
                                                                                                let msg = try_potential_decodeerror!(msgs::Init::read(&mut reader));
-                                                                                               if msg.global_features.requires_unknown_bits() {
+                                                                                               if msg.features.requires_unknown_bits() {
                                                                                                        log_info!(self, "Peer global features required unknown version bits");
                                                                                                        return Err(PeerHandleError{ no_connection_possible: true });
                                                                                                }
-                                                                                               if msg.local_features.requires_unknown_bits() {
+                                                                                               if msg.features.requires_unknown_bits() {
                                                                                                        log_info!(self, "Peer local features required unknown version bits");
                                                                                                        return Err(PeerHandleError{ no_connection_possible: true });
                                                                                                }
-                                                                                               if peer.their_global_features.is_some() {
+                                                                                               if peer.their_features.is_some() {
                                                                                                        return Err(PeerHandleError{ no_connection_possible: false });
                                                                                                }
 
                                                                                                log_info!(self, "Received peer Init message: data_loss_protect: {}, initial_routing_sync: {}, upfront_shutdown_script: {}, unkown local flags: {}, unknown global flags: {}",
-                                                                                                       if msg.local_features.supports_data_loss_protect() { "supported" } else { "not supported"},
-                                                                                                       if msg.local_features.initial_routing_sync() { "requested" } else { "not requested" },
-                                                                                                       if msg.local_features.supports_upfront_shutdown_script() { "supported" } else { "not supported"},
-                                                                                                       if msg.local_features.supports_unknown_bits() { "present" } else { "none" },
-                                                                                                       if msg.global_features.supports_unknown_bits() { "present" } else { "none" });
+                                                                                                       if msg.features.supports_data_loss_protect() { "supported" } else { "not supported"},
+                                                                                                       if msg.features.initial_routing_sync() { "requested" } else { "not requested" },
+                                                                                                       if msg.features.supports_upfront_shutdown_script() { "supported" } else { "not supported"},
+                                                                                                       if msg.features.supports_unknown_bits() { "present" } else { "none" },
+                                                                                                       if msg.features.supports_unknown_bits() { "present" } else { "none" });
 
-                                                                                               if msg.local_features.initial_routing_sync() {
+                                                                                               if msg.features.initial_routing_sync() {
                                                                                                        peer.sync_status = InitSyncTracker::ChannelsSyncing(0);
                                                                                                        peers.peers_needing_send.insert(peer_descriptor.clone());
                                                                                                }
-                                                                                               peer.their_global_features = Some(msg.global_features);
-                                                                                               peer.their_local_features = Some(msg.local_features);
+                                                                                               peer.their_features = Some(msg.features);
 
                                                                                                if !peer.outbound {
-                                                                                                       let mut local_features = msgs::LocalFeatures::new();
+                                                                                                       let mut features = msgs::InitFeatures::new();
                                                                                                        if self.initial_syncs_sent.load(Ordering::Acquire) < INITIAL_SYNCS_TO_SEND {
                                                                                                                self.initial_syncs_sent.fetch_add(1, Ordering::AcqRel);
-                                                                                                               local_features.set_initial_routing_sync();
+                                                                                                               features.set_initial_routing_sync();
                                                                                                        }
 
                                                                                                        encode_and_send_msg!(msgs::Init {
-                                                                                                               global_features: msgs::GlobalFeatures::new(),
-                                                                                                               local_features,
+                                                                                                               features,
                                                                                                        }, 16);
                                                                                                }
 
@@ -692,11 +686,11 @@ impl<Descriptor: SocketDescriptor> PeerManager<Descriptor> {
                                                                                        // Channel control:
                                                                                        32 => {
                                                                                                let msg = try_potential_decodeerror!(msgs::OpenChannel::read(&mut reader));
-                                                                                               self.message_handler.chan_handler.handle_open_channel(&peer.their_node_id.unwrap(), peer.their_local_features.clone().unwrap(), &msg);
+                                                                                               self.message_handler.chan_handler.handle_open_channel(&peer.their_node_id.unwrap(), peer.their_features.clone().unwrap(), &msg);
                                                                                        },
                                                                                        33 => {
                                                                                                let msg = try_potential_decodeerror!(msgs::AcceptChannel::read(&mut reader));
-                                                                                               self.message_handler.chan_handler.handle_accept_channel(&peer.their_node_id.unwrap(), peer.their_local_features.clone().unwrap(), &msg);
+                                                                                               self.message_handler.chan_handler.handle_accept_channel(&peer.their_node_id.unwrap(), peer.their_features.clone().unwrap(), &msg);
                                                                                        },
 
                                                                                        34 => {
@@ -833,7 +827,7 @@ impl<Descriptor: SocketDescriptor> PeerManager<Descriptor> {
                                                        };
                                                        match peers.peers.get_mut(&descriptor) {
                                                                Some(peer) => {
-                                                                       if peer.their_global_features.is_none() {
+                                                                       if peer.their_features.is_none() {
                                                                                $handle_no_such_peer;
                                                                                continue;
                                                                        }
@@ -984,7 +978,7 @@ impl<Descriptor: SocketDescriptor> PeerManager<Descriptor> {
                                                        let encoded_update_msg = encode_msg!(update_msg, 258);
 
                                                        for (ref descriptor, ref mut peer) in peers.peers.iter_mut() {
-                                                               if !peer.channel_encryptor.is_ready_for_encryption() || peer.their_global_features.is_none() ||
+                                                               if !peer.channel_encryptor.is_ready_for_encryption() || peer.their_features.is_none() ||
                                                                                !peer.should_forward_channel(msg.contents.short_channel_id) {
                                                                        continue
                                                                }
@@ -1008,7 +1002,7 @@ impl<Descriptor: SocketDescriptor> PeerManager<Descriptor> {
                                                        let encoded_msg = encode_msg!(msg, 258);
 
                                                        for (ref descriptor, ref mut peer) in peers.peers.iter_mut() {
-                                                               if !peer.channel_encryptor.is_ready_for_encryption() || peer.their_global_features.is_none() ||
+                                                               if !peer.channel_encryptor.is_ready_for_encryption() || peer.their_features.is_none() ||
                                                                                !peer.should_forward_channel(msg.contents.short_channel_id)  {
                                                                        continue
                                                                }