use chain::transaction::OutPoint;
use ln::channel::{Channel, ChannelError};
use ln::channelmonitor::{ChannelMonitor, ChannelMonitorUpdateErr, ManyChannelMonitor, CLTV_CLAIM_BUFFER, LATENCY_GRACE_PERIOD_BLOCKS, ANTI_REORG_DELAY};
+use ln::features::{InitFeatures, NodeFeatures};
use ln::router::Route;
-use ln::features::InitFeatures;
use ln::msgs;
use ln::onion_utils;
use ln::msgs::{ChannelMessageHandler, DecodeError, LightningError};
channel_state: Mutex<ChannelHolder<ChanSigner>>,
our_network_key: SecretKey,
+ /// Used to track the last value sent in a node_announcement "timestamp" field. We just set
+ /// them to be monotonically increasing since we don't assume access to a time source.
+ last_node_announcement_serial: AtomicUsize,
+
/// The bulk of our storage will eventually be here (channels and message queues and the like).
/// If we are connected to a peer we always at least have an entry here, even if no channels
/// are currently open with that peer.
}),
our_network_key: keys_manager.get_node_secret(),
+ last_node_announcement_serial: AtomicUsize::new(0),
+
per_peer_state: RwLock::new(HashMap::new()),
pending_events: Mutex::new(Vec::new()),
})
}
+ /// Generates a signed node_announcement from the given arguments and creates a
+ /// BroadcastNodeAnnouncement event.
+ ///
+ /// RGB is a node "color" and alias ia a printable human-readable string to describe this node
+ /// to humans. They carry no in-protocol meaning.
+ ///
+ /// addresses represent the set (possibly empty) of socket addresses on which this node accepts
+ /// incoming connections. These will be broadcast to the network, publicly tying these
+ /// addresses together. If you wish to preserve user privacy, addresses should likely contain
+ /// only Tor Onion addresses.
+ pub fn broadcast_node_announcement(&self, rgb: [u8; 3], alias: [u8; 32], addresses: msgs::NetAddressSet) {
+ let _ = self.total_consistency_lock.read().unwrap();
+
+ let announcement = msgs::UnsignedNodeAnnouncement {
+ features: NodeFeatures::supported(),
+ timestamp: self.last_node_announcement_serial.fetch_add(1, Ordering::AcqRel) as u32,
+ node_id: self.get_our_node_id(),
+ rgb, alias,
+ addresses: addresses.into_vec(),
+ excess_address_data: Vec::new(),
+ excess_data: Vec::new(),
+ };
+ let msghash = hash_to_message!(&Sha256dHash::hash(&announcement.encode()[..])[..]);
+
+ let mut channel_state = self.channel_state.lock().unwrap();
+ channel_state.pending_msg_events.push(events::MessageSendEvent::BroadcastNodeAnnouncement {
+ msg: msgs::NodeAnnouncement {
+ signature: self.secp_ctx.sign(&msghash, &self.our_network_key),
+ contents: announcement
+ },
+ });
+ }
+
/// Processes HTLCs which are pending waiting on random forward delay.
///
/// Should only really ever be called in response to a PendingHTLCsForwardable event.
&events::MessageSendEvent::SendShutdown { ref node_id, .. } => node_id != their_node_id,
&events::MessageSendEvent::SendChannelReestablish { ref node_id, .. } => node_id != their_node_id,
&events::MessageSendEvent::BroadcastChannelAnnouncement { .. } => true,
+ &events::MessageSendEvent::BroadcastNodeAnnouncement { .. } => true,
&events::MessageSendEvent::BroadcastChannelUpdate { .. } => true,
&events::MessageSendEvent::HandleError { ref node_id, .. } => node_id != their_node_id,
&events::MessageSendEvent::PaymentFailureNetworkUpdate { .. } => true,
peer_state.latest_features.write(writer)?;
}
+ (self.last_node_announcement_serial.load(Ordering::Acquire) as u32).write(writer)?;
+
Ok(())
}
}
per_peer_state.insert(peer_pubkey, Mutex::new(peer_state));
}
+ let last_node_announcement_serial: u32 = Readable::read(reader)?;
+
let channel_manager = ChannelManager {
genesis_hash,
fee_estimator: args.fee_estimator,
}),
our_network_key: args.keys_manager.get_node_secret(),
+ last_node_announcement_serial: AtomicUsize::new(last_node_announcement_serial as usize),
+
per_peer_state: RwLock::new(per_peer_state),
pending_events: Mutex::new(Vec::new()),
pub fn create_announced_chan_between_nodes_with_value<'a, 'b, 'c, 'd>(nodes: &'a Vec<Node<'b, 'c, 'd>>, a: usize, b: usize, channel_value: u64, push_msat: u64, a_flags: InitFeatures, b_flags: InitFeatures) -> (msgs::ChannelUpdate, msgs::ChannelUpdate, [u8; 32], Transaction) {
let chan_announcement = create_chan_between_nodes_with_value(&nodes[a], &nodes[b], channel_value, push_msat, a_flags, b_flags);
+
+ nodes[a].node.broadcast_node_announcement([0, 0, 0], [0; 32], msgs::NetAddressSet::new());
+ let a_events = nodes[a].node.get_and_clear_pending_msg_events();
+ assert_eq!(a_events.len(), 1);
+ let a_node_announcement = match a_events[0] {
+ MessageSendEvent::BroadcastNodeAnnouncement { ref msg } => {
+ (*msg).clone()
+ },
+ _ => panic!("Unexpected event"),
+ };
+
+ nodes[b].node.broadcast_node_announcement([1, 1, 1], [1; 32], msgs::NetAddressSet::new());
+ let b_events = nodes[b].node.get_and_clear_pending_msg_events();
+ assert_eq!(b_events.len(), 1);
+ let b_node_announcement = match b_events[0] {
+ MessageSendEvent::BroadcastNodeAnnouncement { ref msg } => {
+ (*msg).clone()
+ },
+ _ => panic!("Unexpected event"),
+ };
+
for node in nodes {
assert!(node.router.handle_channel_announcement(&chan_announcement.0).unwrap());
node.router.handle_channel_update(&chan_announcement.1).unwrap();
node.router.handle_channel_update(&chan_announcement.2).unwrap();
+ node.router.handle_node_announcement(&a_node_announcement).unwrap();
+ node.router.handle_node_announcement(&b_node_announcement).unwrap();
}
(chan_announcement.1, chan_announcement.2, chan_announcement.3, chan_announcement.4)
}
InitSyncTracker::NodesSyncing(_) => true,
}
}
+
+ /// Similar to the above, but for node announcements indexed by node_id.
+ fn should_forward_node(&self, node_id: PublicKey) -> bool {
+ match self.sync_status {
+ InitSyncTracker::NoSyncRequested => true,
+ InitSyncTracker::ChannelsSyncing(_) => false,
+ InitSyncTracker::NodesSyncing(pk) => pk < node_id,
+ }
+ }
}
struct PeerHolder<Descriptor: SocketDescriptor> {
}
}
},
+ MessageSendEvent::BroadcastNodeAnnouncement { ref msg } => {
+ log_trace!(self, "Handling BroadcastNodeAnnouncement event in peer_handler");
+ if self.message_handler.route_handler.handle_node_announcement(msg).is_ok() {
+ let encoded_msg = encode_msg!(msg);
+
+ for (ref descriptor, ref mut peer) in peers.peers.iter_mut() {
+ if !peer.channel_encryptor.is_ready_for_encryption() || peer.their_features.is_none() ||
+ !peer.should_forward_node(msg.contents.node_id) {
+ continue
+ }
+ peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encoded_msg[..]));
+ self.do_attempt_write_data(&mut (*descriptor).clone(), peer);
+ }
+ }
+ },
MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
log_trace!(self, "Handling BroadcastChannelUpdate event in peer_handler for short channel id {}", msg.contents.short_channel_id);
if self.message_handler.route_handler.handle_channel_update(msg).is_ok() {
},
/// Used to indicate that a channel_announcement and channel_update should be broadcast to all
/// peers (except the peer with node_id either msg.contents.node_id_1 or msg.contents.node_id_2).
+ ///
+ /// Note that after doing so, you very likely (unless you did so very recently) want to call
+ /// ChannelManager::broadcast_node_announcement to trigger a BroadcastNodeAnnouncement event.
BroadcastChannelAnnouncement {
/// The channel_announcement which should be sent.
msg: msgs::ChannelAnnouncement,
/// The followup channel_update which should be sent.
update_msg: msgs::ChannelUpdate,
},
+ /// Used to indicate that a node_announcement should be broadcast to all peers.
+ BroadcastNodeAnnouncement {
+ /// The node_announcement which should be sent.
+ msg: msgs::NodeAnnouncement,
+ },
/// Used to indicate that a channel_update should be broadcast to all peers.
BroadcastChannelUpdate {
/// The channel_update which should be sent.
projects / rust-lightning / commitdiff