2 pub mod bitcoind_client;
8 use crate::bitcoind_client::BitcoindClient;
9 use crate::disk::FilesystemLogger;
10 use bitcoin::blockdata::transaction::Transaction;
11 use bitcoin::consensus::encode;
12 use bitcoin::network::constants::Network;
13 use bitcoin::secp256k1::Secp256k1;
14 use bitcoin::BlockHash;
15 use bitcoin_bech32::WitnessProgram;
17 use lightning::chain::chaininterface::{BroadcasterInterface, ConfirmationTarget, FeeEstimator};
18 use lightning::chain::keysinterface::{EntropySource, InMemorySigner, KeysManager};
19 use lightning::chain::{chainmonitor, ChannelMonitorUpdateStatus};
20 use lightning::chain::{Filter, Watch};
21 use lightning::events::{Event, PaymentFailureReason, PaymentPurpose};
22 use lightning::ln::channelmanager;
23 use lightning::ln::channelmanager::{
24 ChainParameters, ChannelManagerReadArgs, SimpleArcChannelManager,
26 use lightning::ln::peer_handler::{IgnoringMessageHandler, MessageHandler, SimpleArcPeerManager};
27 use lightning::ln::{PaymentHash, PaymentPreimage, PaymentSecret};
28 use lightning::onion_message::SimpleArcOnionMessenger;
29 use lightning::routing::gossip;
30 use lightning::routing::gossip::{NodeId, P2PGossipSync};
31 use lightning::routing::router::DefaultRouter;
32 use lightning::util::config::UserConfig;
33 use lightning::util::ser::ReadableArgs;
34 use lightning_background_processor::{process_events_async, GossipSync};
35 use lightning_block_sync::init;
36 use lightning_block_sync::poll;
37 use lightning_block_sync::SpvClient;
38 use lightning_block_sync::UnboundedCache;
39 use lightning_net_tokio::SocketDescriptor;
40 use lightning_persister::FilesystemPersister;
41 use rand::{thread_rng, Rng};
42 use std::collections::hash_map::Entry;
43 use std::collections::HashMap;
44 use std::convert::TryInto;
51 use std::sync::atomic::{AtomicBool, Ordering};
52 use std::sync::{Arc, Mutex};
53 use std::time::{Duration, SystemTime};
55 pub(crate) enum HTLCStatus {
61 pub(crate) struct MillisatAmount(Option<u64>);
63 impl fmt::Display for MillisatAmount {
64 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
66 Some(amt) => write!(f, "{}", amt),
67 None => write!(f, "unknown"),
72 pub(crate) struct PaymentInfo {
73 preimage: Option<PaymentPreimage>,
74 secret: Option<PaymentSecret>,
76 amt_msat: MillisatAmount,
79 pub(crate) type PaymentInfoStorage = Arc<Mutex<HashMap<PaymentHash, PaymentInfo>>>;
81 type ChainMonitor = chainmonitor::ChainMonitor<
83 Arc<dyn Filter + Send + Sync>,
86 Arc<FilesystemLogger>,
87 Arc<FilesystemPersister>,
90 pub(crate) type PeerManager = SimpleArcPeerManager<
99 pub(crate) type ChannelManager =
100 SimpleArcChannelManager<ChainMonitor, BitcoindClient, BitcoindClient, FilesystemLogger>;
102 pub(crate) type NetworkGraph = gossip::NetworkGraph<Arc<FilesystemLogger>>;
104 type OnionMessenger = SimpleArcOnionMessenger<FilesystemLogger>;
106 async fn handle_ldk_events(
107 channel_manager: &Arc<ChannelManager>, bitcoind_client: &BitcoindClient,
108 network_graph: &NetworkGraph, keys_manager: &KeysManager,
109 inbound_payments: &PaymentInfoStorage, outbound_payments: &PaymentInfoStorage,
110 network: Network, event: Event,
113 Event::FundingGenerationReady {
114 temporary_channel_id,
115 counterparty_node_id,
116 channel_value_satoshis,
120 // Construct the raw transaction with one output, that is paid the amount of the
122 let addr = WitnessProgram::from_scriptpubkey(
125 Network::Bitcoin => bitcoin_bech32::constants::Network::Bitcoin,
126 Network::Testnet => bitcoin_bech32::constants::Network::Testnet,
127 Network::Regtest => bitcoin_bech32::constants::Network::Regtest,
128 Network::Signet => bitcoin_bech32::constants::Network::Signet,
131 .expect("Lightning funding tx should always be to a SegWit output")
133 let mut outputs = vec![HashMap::with_capacity(1)];
134 outputs[0].insert(addr, channel_value_satoshis as f64 / 100_000_000.0);
135 let raw_tx = bitcoind_client.create_raw_transaction(outputs).await;
137 // Have your wallet put the inputs into the transaction such that the output is
139 let funded_tx = bitcoind_client.fund_raw_transaction(raw_tx).await;
141 // Sign the final funding transaction and broadcast it.
142 let signed_tx = bitcoind_client.sign_raw_transaction_with_wallet(funded_tx.hex).await;
143 assert_eq!(signed_tx.complete, true);
144 let final_tx: Transaction =
145 encode::deserialize(&hex_utils::to_vec(&signed_tx.hex).unwrap()).unwrap();
146 // Give the funding transaction back to LDK for opening the channel.
148 .funding_transaction_generated(
149 &temporary_channel_id,
150 &counterparty_node_id,
156 "\nERROR: Channel went away before we could fund it. The peer disconnected or refused the channel.");
158 io::stdout().flush().unwrap();
161 Event::PaymentClaimable {
167 via_user_channel_id: _,
172 "\nEVENT: received payment from payment hash {} of {} millisatoshis",
173 hex_utils::hex_str(&payment_hash.0),
177 io::stdout().flush().unwrap();
178 let payment_preimage = match purpose {
179 PaymentPurpose::InvoicePayment { payment_preimage, .. } => payment_preimage,
180 PaymentPurpose::SpontaneousPayment(preimage) => Some(preimage),
182 channel_manager.claim_funds(payment_preimage.unwrap());
184 Event::PaymentClaimed { payment_hash, purpose, amount_msat, receiver_node_id: _ } => {
186 "\nEVENT: claimed payment from payment hash {} of {} millisatoshis",
187 hex_utils::hex_str(&payment_hash.0),
191 io::stdout().flush().unwrap();
192 let (payment_preimage, payment_secret) = match purpose {
193 PaymentPurpose::InvoicePayment { payment_preimage, payment_secret, .. } => {
194 (payment_preimage, Some(payment_secret))
196 PaymentPurpose::SpontaneousPayment(preimage) => (Some(preimage), None),
198 let mut payments = inbound_payments.lock().unwrap();
199 match payments.entry(payment_hash) {
200 Entry::Occupied(mut e) => {
201 let payment = e.get_mut();
202 payment.status = HTLCStatus::Succeeded;
203 payment.preimage = payment_preimage;
204 payment.secret = payment_secret;
206 Entry::Vacant(e) => {
207 e.insert(PaymentInfo {
208 preimage: payment_preimage,
209 secret: payment_secret,
210 status: HTLCStatus::Succeeded,
211 amt_msat: MillisatAmount(Some(amount_msat)),
216 Event::PaymentSent { payment_preimage, payment_hash, fee_paid_msat, .. } => {
217 let mut payments = outbound_payments.lock().unwrap();
218 for (hash, payment) in payments.iter_mut() {
219 if *hash == payment_hash {
220 payment.preimage = Some(payment_preimage);
221 payment.status = HTLCStatus::Succeeded;
223 "\nEVENT: successfully sent payment of {} millisatoshis{} from \
224 payment hash {:?} with preimage {:?}",
226 if let Some(fee) = fee_paid_msat {
227 format!(" (fee {} msat)", fee)
231 hex_utils::hex_str(&payment_hash.0),
232 hex_utils::hex_str(&payment_preimage.0)
235 io::stdout().flush().unwrap();
239 Event::OpenChannelRequest { .. } => {
240 // Unreachable, we don't set manually_accept_inbound_channels
242 Event::PaymentPathSuccessful { .. } => {}
243 Event::PaymentPathFailed { .. } => {}
244 Event::ProbeSuccessful { .. } => {}
245 Event::ProbeFailed { .. } => {}
246 Event::PaymentFailed { payment_hash, reason, .. } => {
248 "\nEVENT: Failed to send payment to payment hash {:?}: {:?}",
249 hex_utils::hex_str(&payment_hash.0),
250 if let Some(r) = reason { r } else { PaymentFailureReason::RetriesExhausted }
253 io::stdout().flush().unwrap();
255 let mut payments = outbound_payments.lock().unwrap();
256 if payments.contains_key(&payment_hash) {
257 let payment = payments.get_mut(&payment_hash).unwrap();
258 payment.status = HTLCStatus::Failed;
261 Event::PaymentForwarded {
265 claim_from_onchain_tx,
266 outbound_amount_forwarded_msat,
268 let read_only_network_graph = network_graph.read_only();
269 let nodes = read_only_network_graph.nodes();
270 let channels = channel_manager.list_channels();
272 let node_str = |channel_id: &Option<[u8; 32]>| match channel_id {
273 None => String::new(),
274 Some(channel_id) => match channels.iter().find(|c| c.channel_id == *channel_id) {
275 None => String::new(),
277 match nodes.get(&NodeId::from_pubkey(&channel.counterparty.node_id)) {
278 None => "private node".to_string(),
279 Some(node) => match &node.announcement_info {
280 None => "unnamed node".to_string(),
281 Some(announcement) => {
282 format!("node {}", announcement.alias)
289 let channel_str = |channel_id: &Option<[u8; 32]>| {
291 .map(|channel_id| format!(" with channel {}", hex_utils::hex_str(&channel_id)))
295 format!(" from {}{}", node_str(&prev_channel_id), channel_str(&prev_channel_id));
297 format!(" to {}{}", node_str(&next_channel_id), channel_str(&next_channel_id));
299 let from_onchain_str = if claim_from_onchain_tx {
300 "from onchain downstream claim"
302 "from HTLC fulfill message"
304 let amt_args = if let Some(v) = outbound_amount_forwarded_msat {
309 if let Some(fee_earned) = fee_earned_msat {
311 "\nEVENT: Forwarded payment for {} msat{}{}, earning {} msat {}",
312 amt_args, from_prev_str, to_next_str, fee_earned, from_onchain_str
316 "\nEVENT: Forwarded payment for {} msat{}{}, claiming onchain {}",
317 amt_args, from_prev_str, to_next_str, from_onchain_str
321 io::stdout().flush().unwrap();
323 Event::HTLCHandlingFailed { .. } => {}
324 Event::PendingHTLCsForwardable { time_forwardable } => {
325 let forwarding_channel_manager = channel_manager.clone();
326 let min = time_forwardable.as_millis() as u64;
327 tokio::spawn(async move {
328 let millis_to_sleep = thread_rng().gen_range(min, min * 5) as u64;
329 tokio::time::sleep(Duration::from_millis(millis_to_sleep)).await;
330 forwarding_channel_manager.process_pending_htlc_forwards();
333 Event::SpendableOutputs { outputs } => {
334 let destination_address = bitcoind_client.get_new_address().await;
335 let output_descriptors = &outputs.iter().map(|a| a).collect::<Vec<_>>();
337 bitcoind_client.get_est_sat_per_1000_weight(ConfirmationTarget::Normal);
338 let spending_tx = keys_manager
339 .spend_spendable_outputs(
342 destination_address.script_pubkey(),
347 bitcoind_client.broadcast_transaction(&spending_tx);
349 Event::ChannelPending { channel_id, counterparty_node_id, .. } => {
351 "\nEVENT: Channel {} with peer {} is pending awaiting funding lock-in!",
352 hex_utils::hex_str(&channel_id),
353 hex_utils::hex_str(&counterparty_node_id.serialize()),
356 io::stdout().flush().unwrap();
358 Event::ChannelReady {
361 ref counterparty_node_id,
365 "\nEVENT: Channel {} with peer {} is ready to be used!",
366 hex_utils::hex_str(channel_id),
367 hex_utils::hex_str(&counterparty_node_id.serialize()),
370 io::stdout().flush().unwrap();
372 Event::ChannelClosed { channel_id, reason, user_channel_id: _ } => {
374 "\nEVENT: Channel {} closed due to: {:?}",
375 hex_utils::hex_str(&channel_id),
379 io::stdout().flush().unwrap();
381 Event::DiscardFunding { .. } => {
382 // A "real" node should probably "lock" the UTXOs spent in funding transactions until
383 // the funding transaction either confirms, or this event is generated.
385 Event::HTLCIntercepted { .. } => {}
389 async fn start_ldk() {
390 let args = match args::parse_startup_args() {
391 Ok(user_args) => user_args,
395 // Initialize the LDK data directory if necessary.
396 let ldk_data_dir = format!("{}/.ldk", args.ldk_storage_dir_path);
397 fs::create_dir_all(ldk_data_dir.clone()).unwrap();
400 // Step 1: Initialize the Logger
401 let logger = Arc::new(FilesystemLogger::new(ldk_data_dir.clone()));
403 // Initialize our bitcoind client.
404 let bitcoind_client = match BitcoindClient::new(
405 args.bitcoind_rpc_host.clone(),
406 args.bitcoind_rpc_port,
407 args.bitcoind_rpc_username.clone(),
408 args.bitcoind_rpc_password.clone(),
409 tokio::runtime::Handle::current(),
414 Ok(client) => Arc::new(client),
416 println!("Failed to connect to bitcoind client: {}", e);
421 // Check that the bitcoind we've connected to is running the network we expect
422 let bitcoind_chain = bitcoind_client.get_blockchain_info().await.chain;
424 != match args.network {
425 bitcoin::Network::Bitcoin => "main",
426 bitcoin::Network::Testnet => "test",
427 bitcoin::Network::Regtest => "regtest",
428 bitcoin::Network::Signet => "signet",
431 "Chain argument ({}) didn't match bitcoind chain ({})",
432 args.network, bitcoind_chain
437 // Step 2: Initialize the FeeEstimator
439 // BitcoindClient implements the FeeEstimator trait, so it'll act as our fee estimator.
440 let fee_estimator = bitcoind_client.clone();
442 // Step 3: Initialize the BroadcasterInterface
444 // BitcoindClient implements the BroadcasterInterface trait, so it'll act as our transaction
446 let broadcaster = bitcoind_client.clone();
448 // Step 4: Initialize Persist
449 let persister = Arc::new(FilesystemPersister::new(ldk_data_dir.clone()));
451 // Step 5: Initialize the ChainMonitor
452 let chain_monitor: Arc<ChainMonitor> = Arc::new(chainmonitor::ChainMonitor::new(
456 fee_estimator.clone(),
460 // Step 6: Initialize the KeysManager
462 // The key seed that we use to derive the node privkey (that corresponds to the node pubkey) and
463 // other secret key material.
464 let keys_seed_path = format!("{}/keys_seed", ldk_data_dir.clone());
465 let keys_seed = if let Ok(seed) = fs::read(keys_seed_path.clone()) {
466 assert_eq!(seed.len(), 32);
467 let mut key = [0; 32];
468 key.copy_from_slice(&seed);
471 let mut key = [0; 32];
472 thread_rng().fill_bytes(&mut key);
473 match File::create(keys_seed_path.clone()) {
475 f.write_all(&key).expect("Failed to write node keys seed to disk");
476 f.sync_all().expect("Failed to sync node keys seed to disk");
479 println!("ERROR: Unable to create keys seed file {}: {}", keys_seed_path, e);
485 let cur = SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap();
486 let keys_manager = Arc::new(KeysManager::new(&keys_seed, cur.as_secs(), cur.subsec_nanos()));
488 // Step 7: Read ChannelMonitor state from disk
489 let mut channelmonitors =
490 persister.read_channelmonitors(keys_manager.clone(), keys_manager.clone()).unwrap();
492 // Step 8: Poll for the best chain tip, which may be used by the channel manager & spv client
493 let polled_chain_tip = init::validate_best_block_header(bitcoind_client.as_ref())
495 .expect("Failed to fetch best block header and best block");
497 // Step 9: Initialize routing ProbabilisticScorer
498 let network_graph_path = format!("{}/network_graph", ldk_data_dir.clone());
500 Arc::new(disk::read_network(Path::new(&network_graph_path), args.network, logger.clone()));
502 let scorer_path = format!("{}/scorer", ldk_data_dir.clone());
503 let scorer = Arc::new(Mutex::new(disk::read_scorer(
504 Path::new(&scorer_path),
505 Arc::clone(&network_graph),
509 // Step 10: Create Router
510 let router = Arc::new(DefaultRouter::new(
511 network_graph.clone(),
513 keys_manager.get_secure_random_bytes(),
517 // Step 11: Initialize the ChannelManager
518 let mut user_config = UserConfig::default();
519 user_config.channel_handshake_limits.force_announced_channel_preference = false;
520 let mut restarting_node = true;
521 let (channel_manager_blockhash, channel_manager) = {
522 if let Ok(mut f) = fs::File::open(format!("{}/manager", ldk_data_dir.clone())) {
523 let mut channel_monitor_mut_references = Vec::new();
524 for (_, channel_monitor) in channelmonitors.iter_mut() {
525 channel_monitor_mut_references.push(channel_monitor);
527 let read_args = ChannelManagerReadArgs::new(
528 keys_manager.clone(),
529 keys_manager.clone(),
530 keys_manager.clone(),
531 fee_estimator.clone(),
532 chain_monitor.clone(),
537 channel_monitor_mut_references,
539 <(BlockHash, ChannelManager)>::read(&mut f, read_args).unwrap()
541 // We're starting a fresh node.
542 restarting_node = false;
544 let polled_best_block = polled_chain_tip.to_best_block();
545 let polled_best_block_hash = polled_best_block.block_hash();
547 ChainParameters { network: args.network, best_block: polled_best_block };
548 let fresh_channel_manager = channelmanager::ChannelManager::new(
549 fee_estimator.clone(),
550 chain_monitor.clone(),
554 keys_manager.clone(),
555 keys_manager.clone(),
556 keys_manager.clone(),
560 (polled_best_block_hash, fresh_channel_manager)
564 // Step 12: Sync ChannelMonitors and ChannelManager to chain tip
565 let mut chain_listener_channel_monitors = Vec::new();
566 let mut cache = UnboundedCache::new();
567 let chain_tip = if restarting_node {
568 let mut chain_listeners = vec![(
569 channel_manager_blockhash,
570 &channel_manager as &(dyn chain::Listen + Send + Sync),
573 for (blockhash, channel_monitor) in channelmonitors.drain(..) {
574 let outpoint = channel_monitor.get_funding_txo().0;
575 chain_listener_channel_monitors.push((
577 (channel_monitor, broadcaster.clone(), fee_estimator.clone(), logger.clone()),
582 for monitor_listener_info in chain_listener_channel_monitors.iter_mut() {
583 chain_listeners.push((
584 monitor_listener_info.0,
585 &monitor_listener_info.1 as &(dyn chain::Listen + Send + Sync),
589 init::synchronize_listeners(
590 bitcoind_client.as_ref(),
601 // Step 13: Give ChannelMonitors to ChainMonitor
602 for item in chain_listener_channel_monitors.drain(..) {
603 let channel_monitor = item.1 .0;
604 let funding_outpoint = item.2;
606 chain_monitor.watch_channel(funding_outpoint, channel_monitor),
607 ChannelMonitorUpdateStatus::Completed
611 // Step 14: Optional: Initialize the P2PGossipSync
612 let gossip_sync = Arc::new(P2PGossipSync::new(
613 Arc::clone(&network_graph),
614 None::<Arc<BitcoindClient>>,
618 // Step 15: Initialize the PeerManager
619 let channel_manager: Arc<ChannelManager> = Arc::new(channel_manager);
620 let onion_messenger: Arc<OnionMessenger> = Arc::new(OnionMessenger::new(
621 Arc::clone(&keys_manager),
622 Arc::clone(&keys_manager),
624 IgnoringMessageHandler {},
626 let mut ephemeral_bytes = [0; 32];
627 let current_time = SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap().as_secs();
628 rand::thread_rng().fill_bytes(&mut ephemeral_bytes);
629 let lightning_msg_handler = MessageHandler {
630 chan_handler: channel_manager.clone(),
631 route_handler: gossip_sync.clone(),
632 onion_message_handler: onion_messenger.clone(),
634 let peer_manager: Arc<PeerManager> = Arc::new(PeerManager::new(
635 lightning_msg_handler,
636 current_time.try_into().unwrap(),
639 IgnoringMessageHandler {},
640 Arc::clone(&keys_manager),
644 // Step 16: Initialize networking
646 let peer_manager_connection_handler = peer_manager.clone();
647 let listening_port = args.ldk_peer_listening_port;
648 let stop_listen_connect = Arc::new(AtomicBool::new(false));
649 let stop_listen = Arc::clone(&stop_listen_connect);
650 tokio::spawn(async move {
651 let listener = tokio::net::TcpListener::bind(format!("[::]:{}", listening_port))
653 .expect("Failed to bind to listen port - is something else already listening on it?");
655 let peer_mgr = peer_manager_connection_handler.clone();
656 let tcp_stream = listener.accept().await.unwrap().0;
657 if stop_listen.load(Ordering::Acquire) {
660 tokio::spawn(async move {
661 lightning_net_tokio::setup_inbound(
663 tcp_stream.into_std().unwrap(),
670 // Step 17: Connect and Disconnect Blocks
671 let channel_manager_listener = channel_manager.clone();
672 let chain_monitor_listener = chain_monitor.clone();
673 let bitcoind_block_source = bitcoind_client.clone();
674 let network = args.network;
675 tokio::spawn(async move {
676 let chain_poller = poll::ChainPoller::new(bitcoind_block_source.as_ref(), network);
677 let chain_listener = (chain_monitor_listener, channel_manager_listener);
678 let mut spv_client = SpvClient::new(chain_tip, chain_poller, &mut cache, &chain_listener);
680 spv_client.poll_best_tip().await.unwrap();
681 tokio::time::sleep(Duration::from_secs(1)).await;
685 // TODO: persist payment info to disk
686 let inbound_payments: PaymentInfoStorage = Arc::new(Mutex::new(HashMap::new()));
687 let outbound_payments: PaymentInfoStorage = Arc::new(Mutex::new(HashMap::new()));
689 // Step 18: Handle LDK Events
690 let channel_manager_event_listener = Arc::clone(&channel_manager);
691 let bitcoind_client_event_listener = Arc::clone(&bitcoind_client);
692 let network_graph_event_listener = Arc::clone(&network_graph);
693 let keys_manager_event_listener = Arc::clone(&keys_manager);
694 let inbound_payments_event_listener = Arc::clone(&inbound_payments);
695 let outbound_payments_event_listener = Arc::clone(&outbound_payments);
696 let network = args.network;
697 let event_handler = move |event: Event| {
698 let channel_manager_event_listener = Arc::clone(&channel_manager_event_listener);
699 let bitcoind_client_event_listener = Arc::clone(&bitcoind_client_event_listener);
700 let network_graph_event_listener = Arc::clone(&network_graph_event_listener);
701 let keys_manager_event_listener = Arc::clone(&keys_manager_event_listener);
702 let inbound_payments_event_listener = Arc::clone(&inbound_payments_event_listener);
703 let outbound_payments_event_listener = Arc::clone(&outbound_payments_event_listener);
706 &channel_manager_event_listener,
707 &bitcoind_client_event_listener,
708 &network_graph_event_listener,
709 &keys_manager_event_listener,
710 &inbound_payments_event_listener,
711 &outbound_payments_event_listener,
719 // Step 19: Persist ChannelManager and NetworkGraph
720 let persister = Arc::new(FilesystemPersister::new(ldk_data_dir.clone()));
722 // Step 20: Background Processing
723 let (bp_exit, bp_exit_check) = tokio::sync::watch::channel(());
724 let background_processor = tokio::spawn(process_events_async(
727 chain_monitor.clone(),
728 channel_manager.clone(),
729 GossipSync::p2p(gossip_sync.clone()),
730 peer_manager.clone(),
732 Some(scorer.clone()),
734 let mut bp_exit_fut_check = bp_exit_check.clone();
735 Box::pin(async move {
737 _ = tokio::time::sleep(t) => false,
738 _ = bp_exit_fut_check.changed() => true,
745 // Regularly reconnect to channel peers.
746 let connect_cm = Arc::clone(&channel_manager);
747 let connect_pm = Arc::clone(&peer_manager);
748 let peer_data_path = format!("{}/channel_peer_data", ldk_data_dir.clone());
749 let stop_connect = Arc::clone(&stop_listen_connect);
750 tokio::spawn(async move {
751 let mut interval = tokio::time::interval(Duration::from_secs(1));
753 interval.tick().await;
754 match disk::read_channel_peer_data(Path::new(&peer_data_path)) {
756 let peers = connect_pm.get_peer_node_ids();
757 for node_id in connect_cm
760 .map(|chan| chan.counterparty.node_id)
761 .filter(|id| !peers.iter().any(|(pk, _)| id == pk))
763 if stop_connect.load(Ordering::Acquire) {
766 for (pubkey, peer_addr) in info.iter() {
767 if *pubkey == node_id {
768 let _ = cli::do_connect_peer(
771 Arc::clone(&connect_pm),
778 Err(e) => println!("ERROR: errored reading channel peer info from disk: {:?}", e),
783 // Regularly broadcast our node_announcement. This is only required (or possible) if we have
784 // some public channels, and is only useful if we have public listen address(es) to announce.
785 // In a production environment, this should occur only after the announcement of new channels
786 // to avoid churn in the global network graph.
787 let peer_man = Arc::clone(&peer_manager);
788 let network = args.network;
789 if !args.ldk_announced_listen_addr.is_empty() {
790 tokio::spawn(async move {
791 let mut interval = tokio::time::interval(Duration::from_secs(60));
793 interval.tick().await;
794 peer_man.broadcast_node_announcement(
796 args.ldk_announced_node_name,
797 args.ldk_announced_listen_addr.clone(),
804 cli::poll_for_user_input(
805 Arc::clone(&peer_manager),
806 Arc::clone(&channel_manager),
807 Arc::clone(&keys_manager),
808 Arc::clone(&network_graph),
809 Arc::clone(&onion_messenger),
812 ldk_data_dir.clone(),
818 // Disconnect our peers and stop accepting new connections. This ensures we don't continue
819 // updating our channel data after we've stopped the background processor.
820 stop_listen_connect.store(true, Ordering::Release);
821 peer_manager.disconnect_all_peers();
823 // Stop the background processor.
824 bp_exit.send(()).unwrap();
825 background_processor.await.unwrap().unwrap();
829 pub async fn main() {
830 #[cfg(not(target_os = "windows"))]
832 // Catch Ctrl-C with a dummy signal handler.
834 let mut new_action: libc::sigaction = core::mem::zeroed();
835 let mut old_action: libc::sigaction = core::mem::zeroed();
837 extern "C" fn dummy_handler(
838 _: libc::c_int, _: *const libc::siginfo_t, _: *const libc::c_void,
842 new_action.sa_sigaction = dummy_handler as libc::sighandler_t;
843 new_action.sa_flags = libc::SA_SIGINFO;
847 &new_action as *const libc::sigaction,
848 &mut old_action as *mut libc::sigaction,