1 use std::net::SocketAddr;
3 use std::time::{Duration, Instant};
5 use bitcoin::hashes::hex::ToHex;
6 use bitcoin::secp256k1::{PublicKey, SecretKey};
8 use lightning::ln::peer_handler::{
9 ErroringMessageHandler, IgnoringMessageHandler, MessageHandler, PeerManager,
11 use lightning::routing::gossip::NetworkGraph;
12 use rand::{Rng, thread_rng};
13 use tokio::sync::mpsc;
15 use crate::{config, TestLogger};
16 use crate::downloader::GossipRouter;
17 use crate::types::{GossipMessage, GossipPeerManager};
19 pub(crate) async fn download_gossip(persistence_sender: mpsc::Sender<GossipMessage>,
20 completion_sender: mpsc::Sender<()>,
21 network_graph: Arc<NetworkGraph<TestLogger>>) {
22 let mut key = [0; 32];
23 let mut random_data = [0; 32];
24 thread_rng().fill_bytes(&mut key);
25 thread_rng().fill_bytes(&mut random_data);
26 let our_node_secret = SecretKey::from_slice(&key).unwrap();
28 let router = Arc::new(GossipRouter::new(network_graph, persistence_sender.clone()));
30 let message_handler = MessageHandler {
31 chan_handler: ErroringMessageHandler::new(),
32 route_handler: Arc::clone(&router),
34 let peer_handler = Arc::new(PeerManager::new(
39 IgnoringMessageHandler {},
42 println!("Connecting to Lightning peers...");
43 let peers = config::ln_peers();
44 let mut connected_peer_count = 0;
46 for current_peer in peers {
47 let initial_connection_succeeded = connect_peer(current_peer, Arc::clone(&peer_handler)).await;
48 if initial_connection_succeeded {
49 connected_peer_count += 1;
53 if connected_peer_count < 1 {
54 panic!("Failed to connect to any peer.");
57 println!("Connected to {} Lightning peers!", connected_peer_count);
59 tokio::spawn(async move {
60 let mut previous_announcement_count = 0u64;
61 let mut previous_update_count = 0u64;
62 let mut is_caught_up_with_gossip = false;
65 let mut latest_new_gossip_time = Instant::now();
66 let mut needs_to_notify_persister = false;
69 i += 1; // count the background activity
70 let sleep = tokio::time::sleep(Duration::from_secs(5));
74 let counter = router.counter.read().unwrap();
75 let total_message_count = counter.channel_announcements + counter.channel_updates;
76 let new_message_count = total_message_count - previous_announcement_count - previous_update_count;
78 let was_previously_caught_up_with_gossip = is_caught_up_with_gossip;
79 // TODO: make new message threshold (20) adjust based on connected peer count
80 is_caught_up_with_gossip = new_message_count < 20 && previous_announcement_count > 0 && previous_update_count > 0;
81 if new_message_count > 0 {
82 latest_new_gossip_time = Instant::now();
85 // if we either aren't caught up, or just stopped/started being caught up
86 if !is_caught_up_with_gossip || (is_caught_up_with_gossip != was_previously_caught_up_with_gossip) {
88 "gossip count (iteration {}): {} (delta: {}):\n\tannouncements: {}\n\t\tmismatched scripts: {}\n\tupdates: {}\n\t\tno HTLC max: {}\n",
92 counter.channel_announcements,
93 counter.channel_announcements_with_mismatched_scripts,
94 counter.channel_updates,
95 counter.channel_updates_without_htlc_max_msats
98 println!("Monitoring for gossip…")
101 if is_caught_up_with_gossip && !was_previously_caught_up_with_gossip {
102 println!("caught up with gossip!");
103 needs_to_notify_persister = true;
104 } else if !is_caught_up_with_gossip && was_previously_caught_up_with_gossip {
105 println!("Received new messages since catching up with gossip!");
108 let continuous_caught_up_duration = latest_new_gossip_time.elapsed();
109 if continuous_caught_up_duration.as_secs() > 600 {
110 eprintln!("No new gossip messages in 10 minutes! Something's amiss!");
113 previous_announcement_count = counter.channel_announcements;
114 previous_update_count = counter.channel_updates;
117 if needs_to_notify_persister {
118 needs_to_notify_persister = false;
119 completion_sender.send(()).await.unwrap();
125 async fn connect_peer(current_peer: (PublicKey, SocketAddr), peer_manager: GossipPeerManager) -> bool {
126 eprintln!("Connecting to peer {}@{}...", current_peer.0.to_hex(), current_peer.1.to_string());
127 let connection = lightning_net_tokio::connect_outbound(
128 Arc::clone(&peer_manager),
132 if let Some(disconnection_future) = connection {
133 eprintln!("Connected to peer {}@{}!", current_peer.0.to_hex(), current_peer.1.to_string());
134 tokio::spawn(async move {
135 disconnection_future.await;
137 eprintln!("Reconnecting to peer {}@{}...", current_peer.0.to_hex(), current_peer.1.to_string());
138 if let Some(disconnection_future) = lightning_net_tokio::connect_outbound(
139 Arc::clone(&peer_manager),
143 disconnection_future.await;
145 tokio::time::sleep(Duration::from_secs(10)).await;
151 eprintln!("Failed to connect to peer {}@{}", current_peer.0.to_hex(), current_peer.1.to_string());