_ Git - ldk-sample/blob - src/main.rs

   1 mod bitcoind_client;
   2 mod cli;
   3 mod convert;
   4 mod disk;
   5 mod hex_utils;
   6
   7 use crate::bitcoind_client::BitcoindClient;
   8 use crate::disk::FilesystemLogger;
   9 use bitcoin::blockdata::constants::genesis_block;
  10 use bitcoin::blockdata::transaction::Transaction;
  11 use bitcoin::consensus::encode;
  12 use bitcoin::hashes::sha256::Hash as Sha256;
  13 use bitcoin::hashes::Hash;
  14 use bitcoin::network::constants::Network;
  15 use bitcoin::secp256k1::Secp256k1;
  16 use bitcoin::BlockHash;
  17 use bitcoin_bech32::WitnessProgram;
  18 use lightning::chain;
  19 use lightning::chain::chaininterface::{BroadcasterInterface, ConfirmationTarget, FeeEstimator};
  20 use lightning::chain::chainmonitor::ChainMonitor;
  21 use lightning::chain::keysinterface::{InMemorySigner, KeysInterface, KeysManager};
  22 use lightning::chain::transaction::OutPoint;
  23 use lightning::chain::Filter;
  24 use lightning::chain::Watch;
  25 use lightning::ln::channelmanager;
  26 use lightning::ln::channelmanager::{
  27         ChainParameters, ChannelManagerReadArgs, PaymentHash, PaymentPreimage, SimpleArcChannelManager,
  28 };
  29 use lightning::ln::peer_handler::{MessageHandler, SimpleArcPeerManager};
  30 use lightning::routing::network_graph::NetGraphMsgHandler;
  31 use lightning::util::config::UserConfig;
  32 use lightning::util::events::{Event, EventsProvider};
  33 use lightning::util::ser::ReadableArgs;
  34 use lightning_background_processor::BackgroundProcessor;
  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::HashMap;
  43 use std::fmt;
  44 use std::fs;
  45 use std::fs::File;
  46 use std::io;
  47 use std::io::Write;
  48 use std::path::Path;
  49 use std::sync::{Arc, Mutex};
  50 use std::thread;
  51 use std::time::{Duration, SystemTime};
  52 use tokio::runtime::Runtime;
  53 use tokio::sync::mpsc;
  54
  55 #[derive(PartialEq)]
  56 pub(crate) enum HTLCDirection {
  57         Inbound,
  58         Outbound,
  59 }
  60
  61 pub(crate) enum HTLCStatus {
  62         Pending,
  63         Succeeded,
  64         Failed,
  65 }
  66
  67 pub(crate) struct SatoshiAmount(Option<u64>);
  68
  69 impl fmt::Display for SatoshiAmount {
  70         fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
  71                 match self.0 {
  72                         Some(amt) => write!(f, "{}", amt),
  73                         None => write!(f, "unknown"),
  74                 }
  75         }
  76 }
  77
  78 pub(crate) type PaymentInfoStorage = Arc<
  79         Mutex<
  80                 HashMap<PaymentHash, (Option<PaymentPreimage>, HTLCDirection, HTLCStatus, SatoshiAmount)>,
  81         >,
  82 >;
  83
  84 type ArcChainMonitor = ChainMonitor<
  85         InMemorySigner,
  86         Arc<dyn Filter>,
  87         Arc<BitcoindClient>,
  88         Arc<BitcoindClient>,
  89         Arc<FilesystemLogger>,
  90         Arc<FilesystemPersister>,
  91 >;
  92
  93 pub(crate) type PeerManager = SimpleArcPeerManager<
  94         SocketDescriptor,
  95         ArcChainMonitor,
  96         BitcoindClient,
  97         BitcoindClient,
  98         dyn chain::Access,
  99         FilesystemLogger,
 100 >;
 101
 102 pub(crate) type ChannelManager =
 103         SimpleArcChannelManager<ArcChainMonitor, BitcoindClient, BitcoindClient, FilesystemLogger>;
 104
 105 fn handle_ldk_events(
 106         peer_manager: Arc<PeerManager>, channel_manager: Arc<ChannelManager>,
 107         chain_monitor: Arc<ArcChainMonitor>, bitcoind_client: Arc<BitcoindClient>,
 108         keys_manager: Arc<KeysManager>, payment_storage: PaymentInfoStorage, network: Network,
 109 ) {
 110         let mut pending_txs: HashMap<OutPoint, Transaction> = HashMap::new();
 111         loop {
 112                 peer_manager.process_events();
 113                 let loop_channel_manager = channel_manager.clone();
 114                 let mut events = channel_manager.get_and_clear_pending_events();
 115                 events.append(&mut chain_monitor.get_and_clear_pending_events());
 116                 for event in events {
 117                         match event {
 118                                 Event::FundingGenerationReady {
 119                                         temporary_channel_id,
 120                                         channel_value_satoshis,
 121                                         output_script,
 122                                         ..
 123                                 } => {
 124                                         // Construct the raw transaction with one output, that is paid the amount of the
 125                                         // channel.
 126                                         let addr = WitnessProgram::from_scriptpubkey(
 127                                                 &output_script[..],
 128                                                 match network {
 129                                                         Network::Bitcoin => bitcoin_bech32::constants::Network::Bitcoin,
 130                                                         Network::Testnet => bitcoin_bech32::constants::Network::Testnet,
 131                                                         Network::Regtest => bitcoin_bech32::constants::Network::Regtest,
 132                                                         Network::Signet => panic!("Signet unsupported"),
 133                                                 },
 134                                         )
 135                                         .expect("Lightning funding tx should always be to a SegWit output")
 136                                         .to_address();
 137                                         let mut outputs = vec![HashMap::with_capacity(1)];
 138                                         outputs[0].insert(addr, channel_value_satoshis as f64 / 100_000_000.0);
 139                                         let raw_tx = bitcoind_client.create_raw_transaction(outputs);
 140
 141                                         // Have your wallet put the inputs into the transaction such that the output is
 142                                         // satisfied.
 143                                         let funded_tx = bitcoind_client.fund_raw_transaction(raw_tx);
 144                                         let change_output_position = funded_tx.changepos;
 145                                         assert!(change_output_position == 0 || change_output_position == 1);
 146
 147                                         // Sign the final funding transaction and broadcast it.
 148                                         let signed_tx = bitcoind_client.sign_raw_transaction_with_wallet(funded_tx.hex);
 149                                         assert_eq!(signed_tx.complete, true);
 150                                         let final_tx: Transaction =
 151                                                 encode::deserialize(&hex_utils::to_vec(&signed_tx.hex).unwrap()).unwrap();
 152                                         let outpoint = OutPoint {
 153                                                 txid: final_tx.txid(),
 154                                                 index: if change_output_position == 0 { 1 } else { 0 },
 155                                         };
 156                                         // Give the funding transaction back to LDK for opening the channel.
 157                                         loop_channel_manager
 158                                                 .funding_transaction_generated(&temporary_channel_id, outpoint);
 159                                         pending_txs.insert(outpoint, final_tx);
 160                                 }
 161                                 Event::FundingBroadcastSafe { funding_txo, .. } => {
 162                                         let funding_tx = pending_txs.remove(&funding_txo).unwrap();
 163                                         bitcoind_client.broadcast_transaction(&funding_tx);
 164                                         println!("\nEVENT: broadcasted funding transaction");
 165                                         print!("> ");
 166                                         io::stdout().flush().unwrap();
 167                                 }
 168                                 Event::PaymentReceived { payment_hash, payment_secret, amt: amt_msat } => {
 169                                         let mut payments = payment_storage.lock().unwrap();
 170                                         if let Some((Some(preimage), _, _, _)) = payments.get(&payment_hash) {
 171                                                 assert!(loop_channel_manager.claim_funds(
 172                                                         preimage.clone(),
 173                                                         &payment_secret,
 174                                                         amt_msat
 175                                                 ));
 176                                                 println!(
 177                                                         "\nEVENT: received payment from payment_hash {} of {} satoshis",
 178                                                         hex_utils::hex_str(&payment_hash.0),
 179                                                         amt_msat / 1000
 180                                                 );
 181                                                 print!("> ");
 182                                                 io::stdout().flush().unwrap();
 183                                                 let (_, _, ref mut status, _) = payments.get_mut(&payment_hash).unwrap();
 184                                                 *status = HTLCStatus::Succeeded;
 185                                         } else {
 186                                                 println!("\nERROR: we received a payment but didn't know the preimage");
 187                                                 print!("> ");
 188                                                 io::stdout().flush().unwrap();
 189                                                 loop_channel_manager.fail_htlc_backwards(&payment_hash, &payment_secret);
 190                                                 payments.insert(
 191                                                         payment_hash,
 192                                                         (None, HTLCDirection::Inbound, HTLCStatus::Failed, SatoshiAmount(None)),
 193                                                 );
 194                                         }
 195                                 }
 196                                 Event::PaymentSent { payment_preimage } => {
 197                                         let hashed = PaymentHash(Sha256::hash(&payment_preimage.0).into_inner());
 198                                         let mut payments = payment_storage.lock().unwrap();
 199                                         for (payment_hash, (preimage_option, _, status, amt_sat)) in payments.iter_mut()
 200                                         {
 201                                                 if *payment_hash == hashed {
 202                                                         *preimage_option = Some(payment_preimage);
 203                                                         *status = HTLCStatus::Succeeded;
 204                                                         println!(
 205                                                                 "\nEVENT: successfully sent payment of {} satoshis from \
 206                                          payment hash {:?} with preimage {:?}",
 207                                                                 amt_sat,
 208                                                                 hex_utils::hex_str(&payment_hash.0),
 209                                                                 hex_utils::hex_str(&payment_preimage.0)
 210                                                         );
 211                                                         print!("> ");
 212                                                         io::stdout().flush().unwrap();
 213                                                 }
 214                                         }
 215                                 }
 216                                 Event::PaymentFailed { payment_hash, rejected_by_dest } => {
 217                                         print!(
 218                                                 "\nEVENT: Failed to send payment to payment hash {:?}: ",
 219                                                 hex_utils::hex_str(&payment_hash.0)
 220                                         );
 221                                         if rejected_by_dest {
 222                                                 println!("rejected by destination node");
 223                                         } else {
 224                                                 println!("route failed");
 225                                         }
 226                                         print!("> ");
 227                                         io::stdout().flush().unwrap();
 228
 229                                         let mut payments = payment_storage.lock().unwrap();
 230                                         if payments.contains_key(&payment_hash) {
 231                                                 let (_, _, ref mut status, _) = payments.get_mut(&payment_hash).unwrap();
 232                                                 *status = HTLCStatus::Failed;
 233                                         }
 234                                 }
 235                                 Event::PendingHTLCsForwardable { time_forwardable } => {
 236                                         let forwarding_channel_manager = loop_channel_manager.clone();
 237                                         thread::spawn(move || {
 238                                                 let min = time_forwardable.as_secs();
 239                                                 let seconds_to_sleep = thread_rng().gen_range(min, min * 5);
 240                                                 thread::sleep(Duration::new(seconds_to_sleep, 0));
 241                                                 forwarding_channel_manager.process_pending_htlc_forwards();
 242                                         });
 243                                 }
 244                                 Event::SpendableOutputs { outputs } => {
 245                                         let destination_address = bitcoind_client.get_new_address();
 246                                         let output_descriptors = &outputs.iter().map(|a| a).collect::<Vec<_>>();
 247                                         let tx_feerate =
 248                                                 bitcoind_client.get_est_sat_per_1000_weight(ConfirmationTarget::Normal);
 249                                         let spending_tx = keys_manager
 250                                                 .spend_spendable_outputs(
 251                                                         output_descriptors,
 252                                                         Vec::new(),
 253                                                         destination_address.script_pubkey(),
 254                                                         tx_feerate,
 255                                                         &Secp256k1::new(),
 256                                                 )
 257                                                 .unwrap();
 258                                         bitcoind_client.broadcast_transaction(&spending_tx);
 259                                         // XXX maybe need to rescan and blah?
 260                                 }
 261                         }
 262                 }
 263                 thread::sleep(Duration::new(1, 0));
 264         }
 265 }
 266
 267 fn main() {
 268         let args = match cli::parse_startup_args() {
 269                 Ok(user_args) => user_args,
 270                 Err(()) => return,
 271         };
 272
 273         // Initialize the LDK data directory if necessary.
 274         let ldk_data_dir = format!("{}/.ldk", args.ldk_storage_dir_path);
 275         fs::create_dir_all(ldk_data_dir.clone()).unwrap();
 276
 277         // Initialize our bitcoind client.
 278         let bitcoind_client = match BitcoindClient::new(
 279                 args.bitcoind_rpc_host.clone(),
 280                 args.bitcoind_rpc_port,
 281                 args.bitcoind_rpc_username.clone(),
 282                 args.bitcoind_rpc_password.clone(),
 283         ) {
 284                 Ok(client) => Arc::new(client),
 285                 Err(e) => {
 286                         println!("Failed to connect to bitcoind client: {}", e);
 287                         return;
 288                 }
 289         };
 290         let mut bitcoind_rpc_client = bitcoind_client.get_new_rpc_client().unwrap();
 291
 292         // ## Setup
 293         // Step 1: Initialize the FeeEstimator
 294
 295         // BitcoindClient implements the FeeEstimator trait, so it'll act as our fee estimator.
 296         let fee_estimator = bitcoind_client.clone();
 297
 298         // Step 2: Initialize the Logger
 299         let logger = Arc::new(FilesystemLogger::new(ldk_data_dir.clone()));
 300
 301         // Step 3: Initialize the BroadcasterInterface
 302
 303         // BitcoindClient implements the BroadcasterInterface trait, so it'll act as our transaction
 304         // broadcaster.
 305         let broadcaster = bitcoind_client.clone();
 306
 307         // Step 4: Initialize Persist
 308         let persister = Arc::new(FilesystemPersister::new(ldk_data_dir.clone()));
 309
 310         // Step 5: Initialize the ChainMonitor
 311         let chain_monitor: Arc<ArcChainMonitor> = Arc::new(ChainMonitor::new(
 312                 None,
 313                 broadcaster.clone(),
 314                 logger.clone(),
 315                 fee_estimator.clone(),
 316                 persister.clone(),
 317         ));
 318
 319         // Step 6: Initialize the KeysManager
 320
 321         // The key seed that we use to derive the node privkey (that corresponds to the node pubkey) and
 322         // other secret key material.
 323         let keys_seed_path = format!("{}/keys_seed", ldk_data_dir.clone());
 324         let keys_seed = if let Ok(seed) = fs::read(keys_seed_path.clone()) {
 325                 assert_eq!(seed.len(), 32);
 326                 let mut key = [0; 32];
 327                 key.copy_from_slice(&seed);
 328                 key
 329         } else {
 330                 let mut key = [0; 32];
 331                 thread_rng().fill_bytes(&mut key);
 332                 let mut f = File::create(keys_seed_path).unwrap();
 333                 f.write_all(&key).expect("Failed to write node keys seed to disk");
 334                 f.sync_all().expect("Failed to sync node keys seed to disk");
 335                 key
 336         };
 337         let cur = SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap();
 338         let keys_manager = Arc::new(KeysManager::new(&keys_seed, cur.as_secs(), cur.subsec_nanos()));
 339
 340         // Step 7: Read ChannelMonitor state from disk
 341         let monitors_path = format!("{}/monitors", ldk_data_dir.clone());
 342         let mut outpoint_to_channelmonitor =
 343                 disk::read_channelmonitors(monitors_path.to_string(), keys_manager.clone()).unwrap();
 344
 345         // Step 9: Initialize the ChannelManager
 346         let user_config = UserConfig::default();
 347         let runtime = Runtime::new().unwrap();
 348         let mut restarting_node = true;
 349         let (channel_manager_blockhash, mut channel_manager) = {
 350                 if let Ok(mut f) = fs::File::open(format!("{}/manager", ldk_data_dir.clone())) {
 351                         let mut channel_monitor_mut_references = Vec::new();
 352                         for (_, channel_monitor) in outpoint_to_channelmonitor.iter_mut() {
 353                                 channel_monitor_mut_references.push(&mut channel_monitor.1);
 354                         }
 355                         let read_args = ChannelManagerReadArgs::new(
 356                                 keys_manager.clone(),
 357                                 fee_estimator.clone(),
 358                                 chain_monitor.clone(),
 359                                 broadcaster.clone(),
 360                                 logger.clone(),
 361                                 user_config,
 362                                 channel_monitor_mut_references,
 363                         );
 364                         <(BlockHash, ChannelManager)>::read(&mut f, read_args).unwrap()
 365                 } else {
 366                         // We're starting a fresh node.
 367                         restarting_node = false;
 368                         let getinfo_resp = bitcoind_client.get_blockchain_info();
 369                         let chain_params = ChainParameters {
 370                                 network: args.network,
 371                                 latest_hash: getinfo_resp.latest_blockhash,
 372                                 latest_height: getinfo_resp.latest_height,
 373                         };
 374                         let fresh_channel_manager = channelmanager::ChannelManager::new(
 375                                 fee_estimator.clone(),
 376                                 chain_monitor.clone(),
 377                                 broadcaster.clone(),
 378                                 logger.clone(),
 379                                 keys_manager.clone(),
 380                                 user_config,
 381                                 chain_params,
 382                         );
 383                         (getinfo_resp.latest_blockhash, fresh_channel_manager)
 384                 }
 385         };
 386
 387         // Step 10: Sync ChannelMonitors and ChannelManager to chain tip
 388         let mut chain_listener_channel_monitors = Vec::new();
 389         let mut cache = UnboundedCache::new();
 390         let mut chain_tip: Option<poll::ValidatedBlockHeader> = None;
 391         if restarting_node {
 392                 let mut chain_listeners =
 393                         vec![(channel_manager_blockhash, &mut channel_manager as &mut dyn chain::Listen)];
 394
 395                 for (outpoint, blockhash_and_monitor) in outpoint_to_channelmonitor.drain() {
 396                         let blockhash = blockhash_and_monitor.0;
 397                         let channel_monitor = blockhash_and_monitor.1;
 398                         chain_listener_channel_monitors.push((
 399                                 blockhash,
 400                                 (channel_monitor, broadcaster.clone(), fee_estimator.clone(), logger.clone()),
 401                                 outpoint,
 402                         ));
 403                 }
 404
 405                 for monitor_listener_info in chain_listener_channel_monitors.iter_mut() {
 406                         chain_listeners.push((
 407                                 monitor_listener_info.0,
 408                                 &mut monitor_listener_info.1 as &mut dyn chain::Listen,
 409                         ));
 410                 }
 411                 chain_tip = Some(
 412                         runtime
 413                                 .block_on(init::synchronize_listeners(
 414                                         &mut bitcoind_rpc_client,
 415                                         args.network,
 416                                         &mut cache,
 417                                         chain_listeners,
 418                                 ))
 419                                 .unwrap(),
 420                 );
 421         }
 422
 423         // Step 11: Give ChannelMonitors to ChainMonitor
 424         for item in chain_listener_channel_monitors.drain(..) {
 425                 let channel_monitor = item.1 .0;
 426                 let funding_outpoint = item.2;
 427                 chain_monitor.watch_channel(funding_outpoint, channel_monitor).unwrap();
 428         }
 429
 430         // Step 13: Optional: Initialize the NetGraphMsgHandler
 431         // XXX persist routing data
 432         let genesis = genesis_block(args.network).header.block_hash();
 433         let router =
 434                 Arc::new(NetGraphMsgHandler::new(genesis, None::<Arc<dyn chain::Access>>, logger.clone()));
 435
 436         // Step 14: Initialize the PeerManager
 437         let channel_manager: Arc<ChannelManager> = Arc::new(channel_manager);
 438         let mut ephemeral_bytes = [0; 32];
 439         rand::thread_rng().fill_bytes(&mut ephemeral_bytes);
 440         let lightning_msg_handler =
 441                 MessageHandler { chan_handler: channel_manager.clone(), route_handler: router.clone() };
 442         let peer_manager: Arc<PeerManager> = Arc::new(PeerManager::new(
 443                 lightning_msg_handler,
 444                 keys_manager.get_node_secret(),
 445                 &ephemeral_bytes,
 446                 logger.clone(),
 447         ));
 448
 449         // ## Running LDK
 450         // Step 16: Initialize Peer Connection Handling
 451
 452         // We poll for events in handle_ldk_events(..) rather than waiting for them over the
 453         // mpsc::channel, so we can leave the event receiver as unused.
 454         let (event_ntfn_sender, mut _event_ntfn_receiver) = mpsc::channel(2);
 455         let peer_manager_connection_handler = peer_manager.clone();
 456         let event_notifier = event_ntfn_sender.clone();
 457         let listening_port = args.ldk_peer_listening_port;
 458         runtime.spawn(async move {
 459                 let listener = std::net::TcpListener::bind(format!("0.0.0.0:{}", listening_port)).unwrap();
 460                 loop {
 461                         let tcp_stream = listener.accept().unwrap().0;
 462                         lightning_net_tokio::setup_inbound(
 463                                 peer_manager_connection_handler.clone(),
 464                                 event_notifier.clone(),
 465                                 tcp_stream,
 466                         )
 467                         .await;
 468                 }
 469         });
 470
 471         // Step 17: Connect and Disconnect Blocks
 472         if chain_tip.is_none() {
 473                 chain_tip = Some(
 474                         runtime.block_on(init::validate_best_block_header(&mut bitcoind_rpc_client)).unwrap(),
 475                 );
 476         }
 477         let channel_manager_listener = channel_manager.clone();
 478         let chain_monitor_listener = chain_monitor.clone();
 479         let network = args.network;
 480         runtime.spawn(async move {
 481                 let chain_poller = poll::ChainPoller::new(&mut bitcoind_rpc_client, network);
 482                 let chain_listener = (chain_monitor_listener, channel_manager_listener);
 483                 let mut spv_client =
 484                         SpvClient::new(chain_tip.unwrap(), chain_poller, &mut cache, &chain_listener);
 485                 loop {
 486                         spv_client.poll_best_tip().await.unwrap();
 487                         thread::sleep(Duration::new(1, 0));
 488                 }
 489         });
 490
 491         // Step 17 & 18: Initialize ChannelManager persistence & Once Per Minute: ChannelManager's
 492         // timer_chan_freshness_every_min() and PeerManager's timer_tick_occurred
 493         let runtime_handle = runtime.handle();
 494         let data_dir = ldk_data_dir.clone();
 495         let persist_channel_manager_callback =
 496                 move |node: &ChannelManager| FilesystemPersister::persist_manager(data_dir.clone(), &*node);
 497         BackgroundProcessor::start(
 498                 persist_channel_manager_callback,
 499                 channel_manager.clone(),
 500                 logger.clone(),
 501         );
 502
 503         let peer_manager_processor = peer_manager.clone();
 504         runtime_handle.spawn(async move {
 505                 loop {
 506                         peer_manager_processor.timer_tick_occurred();
 507                         thread::sleep(Duration::new(60, 0));
 508                 }
 509         });
 510
 511         // Step 15: Initialize LDK Event Handling
 512         let peer_manager_event_listener = peer_manager.clone();
 513         let channel_manager_event_listener = channel_manager.clone();
 514         let chain_monitor_event_listener = chain_monitor.clone();
 515         let keys_manager_listener = keys_manager.clone();
 516         let payment_info: PaymentInfoStorage = Arc::new(Mutex::new(HashMap::new()));
 517         let payment_info_for_events = payment_info.clone();
 518         let handle = runtime_handle.clone();
 519         let network = args.network;
 520         thread::spawn(move || {
 521                 handle_ldk_events(
 522                         peer_manager_event_listener,
 523                         channel_manager_event_listener,
 524                         chain_monitor_event_listener,
 525                         bitcoind_client.clone(),
 526                         keys_manager_listener,
 527                         payment_info_for_events,
 528                         network,
 529                 );
 530         });
 531
 532         // Reconnect to channel peers if possible.
 533         let peer_data_path = format!("{}/channel_peer_data", ldk_data_dir.clone());
 534         match disk::read_channel_peer_data(Path::new(&peer_data_path)) {
 535                 Ok(mut info) => {
 536                         for (pubkey, peer_addr) in info.drain() {
 537                                 let _ = cli::connect_peer_if_necessary(
 538                                         pubkey,
 539                                         peer_addr,
 540                                         peer_manager.clone(),
 541                                         event_ntfn_sender.clone(),
 542                                         handle.clone(),
 543                                 );
 544                         }
 545                 }
 546                 Err(e) => println!("ERROR: errored reading channel peer info from disk: {:?}", e),
 547         }
 548
 549         // Start the CLI.
 550         cli::poll_for_user_input(
 551                 peer_manager.clone(),
 552                 channel_manager.clone(),
 553                 router.clone(),
 554                 payment_info,
 555                 keys_manager.get_node_secret(),
 556                 event_ntfn_sender,
 557                 ldk_data_dir.clone(),
 558                 logger.clone(),
 559                 handle,
 560                 args.network,
 561         );
 562 }