_ Git - ldk-java/blob - src/test/java/org/ldk/HumanObjectPeerTest.java

   1 package org.ldk;
   2
   3 import org.bitcoinj.base.BitcoinNetwork;
   4 import org.bitcoinj.base.Coin;
   5 import org.bitcoinj.base.Sha256Hash;
   6 import org.bitcoinj.core.*;
   7 import org.bitcoinj.params.BitcoinNetworkParams;
   8 import org.bitcoinj.script.Script;
   9 import org.junit.jupiter.api.Test;
  10 import org.ldk.batteries.ChannelManagerConstructor;
  11 import org.ldk.batteries.NioPeerHandler;
  12 import org.ldk.enums.*;
  13 import org.ldk.enums.Currency;
  14 import org.ldk.structs.*;
  15 import org.ldk.util.UInt128;
  16 import org.ldk.util.UInt5;
  17
  18 import java.io.FileReader;
  19 import java.io.IOException;
  20 import java.lang.ref.WeakReference;
  21 import java.net.InetSocketAddress;
  22 import java.util.*;
  23 import java.util.function.IntConsumer;
  24
  25 class HumanObjectPeerTestInstance {
  26     private final boolean nice_close;
  27     private final boolean use_km_wrapper;
  28     private final boolean use_full_km_wrapper;
  29     private final boolean use_manual_watch;
  30     private final boolean reload_peers;
  31     private final boolean break_cross_peer_refs;
  32     private final boolean use_nio_peer_handler;
  33     private final boolean use_filter;
  34     private final boolean use_ignore_handler;
  35     private final boolean use_chan_manager_constructor;
  36     private final boolean use_invoice_payer;
  37     TxOut gossip_txout = null;
  38
  39     HumanObjectPeerTestInstance(boolean nice_close, boolean use_km_wrapper, boolean use_full_km_wrapper, boolean use_manual_watch, boolean reload_peers, boolean break_cross_peer_refs, boolean use_nio_peer_handler, boolean use_filter, boolean use_ignore_handler, boolean use_chan_manager_constructor, boolean use_invoice_payer) {
  40         this.nice_close = nice_close;
  41         this.use_km_wrapper = use_km_wrapper;
  42         this.use_full_km_wrapper = use_full_km_wrapper;
  43         this.use_manual_watch = use_manual_watch;
  44         this.reload_peers = reload_peers;
  45         this.break_cross_peer_refs = break_cross_peer_refs;
  46         this.use_nio_peer_handler = use_nio_peer_handler;
  47         this.use_filter = use_filter;
  48         this.use_ignore_handler = use_ignore_handler;
  49         this.use_chan_manager_constructor = use_chan_manager_constructor;
  50         this.use_invoice_payer = use_invoice_payer;
  51     }
  52
  53     class Peer {
  54         NodeSigner manual_node_signer(KeysManager underlying_km) {
  55             NodeSigner underlying_ns = underlying_km.as_NodeSigner();
  56             must_free_objs.add(new WeakReference<>(underlying_ns));
  57             return NodeSigner.new_impl(new NodeSigner.NodeSignerInterface() {
  58                 @Override public byte[] get_inbound_payment_key_material() { return underlying_ns.get_inbound_payment_key_material(); }
  59                 @Override public Result_PublicKeyNoneZ get_node_id(Recipient recipient) { return underlying_ns.get_node_id(recipient); }
  60                 @Override public Result_ThirtyTwoBytesNoneZ ecdh(Recipient recipient, byte[] other_key, Option_BigEndianScalarZ tweak) {
  61                     return underlying_ns.ecdh(recipient, other_key, tweak);
  62                 }
  63                 @Override public Result_RecoverableSignatureNoneZ sign_invoice(byte[] hrp_bytes, UInt5[] invoice_data, Recipient recipient) {
  64                     return underlying_ns.sign_invoice(hrp_bytes, invoice_data, recipient);
  65                 }
  66                 @Override public Result_SchnorrSignatureNoneZ sign_bolt12_invoice_request(UnsignedInvoiceRequest invoice_request) {
  67                     return underlying_ns.sign_bolt12_invoice_request(invoice_request);
  68                 }
  69                 @Override public Result_SchnorrSignatureNoneZ sign_bolt12_invoice(UnsignedBolt12Invoice invoice) {
  70                     return underlying_ns.sign_bolt12_invoice(invoice);
  71                 }
  72                 @Override public Result_ECDSASignatureNoneZ sign_gossip_message(UnsignedGossipMessage msg) {
  73                     return underlying_ns.sign_gossip_message(msg);
  74                 }
  75             });
  76         }
  77         SignerProvider manual_signer_provider(KeysManager underlying_km) {
  78             SignerProvider underlying_sp = underlying_km.as_SignerProvider();
  79             must_free_objs.add(new WeakReference<>(underlying_sp));
  80             return SignerProvider.new_impl(new SignerProvider.SignerProviderInterface() {
  81                 @Override public Result_CVec_u8ZNoneZ get_destination_script(byte[] channel_keys_id) { return underlying_sp.get_destination_script(channel_keys_id); }
  82                 @Override public Result_ShutdownScriptNoneZ get_shutdown_scriptpubkey() { return underlying_sp.get_shutdown_scriptpubkey(); }
  83                 @Override public byte[] generate_channel_keys_id(boolean inbound, long channel_value_satoshis, UInt128 user_channel_id) {
  84                     return underlying_sp.generate_channel_keys_id(inbound, channel_value_satoshis, user_channel_id);
  85                 }
  86                 @Override
  87                 public WriteableEcdsaChannelSigner derive_channel_signer(long channel_value_satoshis, byte[] channel_keys_id) {
  88                     if (!use_full_km_wrapper) {
  89                         WriteableEcdsaChannelSigner underlying_signer = underlying_sp.derive_channel_signer(channel_value_satoshis, channel_keys_id);
  90                         must_free_objs.add(new WeakReference<>(underlying_signer));
  91                         return underlying_signer;
  92                     } else {
  93                         WriteableEcdsaChannelSigner underlying_wecs = underlying_sp.derive_channel_signer(channel_value_satoshis, channel_keys_id);
  94                         EcdsaChannelSigner underlying_ecs = underlying_wecs.get_ecdsa_channel_signer();
  95                         ChannelSigner underlying_cs = underlying_ecs.get_channel_signer();
  96                         ChannelSigner.ChannelSignerInterface csi = new ChannelSigner.ChannelSignerInterface() {
  97                             @Override public byte[] get_per_commitment_point(long idx) { return underlying_cs.get_per_commitment_point(idx); }
  98                             @Override public byte[] release_commitment_secret(long idx) { return underlying_cs.release_commitment_secret(idx); }
  99                             @Override public Result_NoneNoneZ validate_holder_commitment(HolderCommitmentTransaction holder_tx, byte[][] preimages) {
 100                                 return underlying_cs.validate_holder_commitment(holder_tx, preimages);
 101                             }
 102                             @Override public Result_NoneNoneZ validate_counterparty_revocation(long idx, byte[] secret) {
 103                                 return underlying_cs.validate_counterparty_revocation(idx, secret);
 104                             }
 105                             @Override public byte[] channel_keys_id() { return underlying_cs.channel_keys_id(); }
 106                             @Override public void provide_channel_parameters(ChannelTransactionParameters channel_parameters) {
 107                                 underlying_cs.provide_channel_parameters(channel_parameters);
 108                             }
 109                         };
 110                         EcdsaChannelSigner.EcdsaChannelSignerInterface ecsi = new EcdsaChannelSigner.EcdsaChannelSignerInterface() {
 111                             @Override public Result_C2Tuple_ECDSASignatureCVec_ECDSASignatureZZNoneZ sign_counterparty_commitment(CommitmentTransaction commitment_tx, byte[][] inbound_htlc_preimages, byte[][] outbound_htlc_preimages) {
 112                                 return underlying_ecs.sign_counterparty_commitment(commitment_tx, inbound_htlc_preimages, outbound_htlc_preimages);
 113                             }
 114                             @Override public Result_ECDSASignatureNoneZ sign_holder_commitment(HolderCommitmentTransaction commitment_tx) {
 115                                 return underlying_ecs.sign_holder_commitment(commitment_tx);
 116                             }
 117                             @Override public Result_ECDSASignatureNoneZ sign_justice_revoked_output(byte[] justice_tx, long input, long amount, byte[] per_commitment_key) {
 118                                 return underlying_ecs.sign_justice_revoked_output(justice_tx, input, amount, per_commitment_key);
 119                             }
 120                             @Override public Result_ECDSASignatureNoneZ sign_justice_revoked_htlc(byte[] justice_tx, long input, long amount, byte[] per_commitment_key, HTLCOutputInCommitment htlc) {
 121                                 return underlying_ecs.sign_justice_revoked_htlc(justice_tx, input, amount, per_commitment_key, htlc);
 122                             }
 123                             @Override public Result_ECDSASignatureNoneZ sign_holder_htlc_transaction(byte[] htlc_tx, long input, HTLCDescriptor htlc_descriptor) {
 124                                 return underlying_ecs.sign_holder_htlc_transaction(htlc_tx, input, htlc_descriptor);
 125                             }
 126                             @Override public Result_ECDSASignatureNoneZ sign_counterparty_htlc_transaction(byte[] htlc_tx, long input, long amount, byte[] per_commitment_point, HTLCOutputInCommitment htlc) {
 127                                 return underlying_ecs.sign_counterparty_htlc_transaction(htlc_tx, input, amount, per_commitment_point, htlc);
 128                             }
 129                             @Override public Result_ECDSASignatureNoneZ sign_closing_transaction(ClosingTransaction closing_tx) {
 130                                 return underlying_ecs.sign_closing_transaction(closing_tx);
 131                             }
 132                             @Override public Result_ECDSASignatureNoneZ sign_holder_anchor_input(byte[] anchor_tx, long input) {
 133                                 return underlying_ecs.sign_holder_anchor_input(anchor_tx, input);
 134                             }
 135                             @Override public Result_ECDSASignatureNoneZ sign_channel_announcement_with_funding_key(UnsignedChannelAnnouncement msg) {
 136                                 return underlying_ecs.sign_channel_announcement_with_funding_key(msg);
 137                             }
 138                         };
 139                         WriteableEcdsaChannelSigner.WriteableEcdsaChannelSignerInterface wecsi = new WriteableEcdsaChannelSigner.WriteableEcdsaChannelSignerInterface() {
 140                             @Override public byte[] write() { return underlying_wecs.write(); }
 141                         };
 142                         WriteableEcdsaChannelSigner resp = WriteableEcdsaChannelSigner.new_impl(wecsi, ecsi, csi, underlying_cs.get_pubkeys());
 143                         must_free_objs.add(new WeakReference<>(wecsi));
 144                         must_free_objs.add(new WeakReference<>(ecsi));
 145                         must_free_objs.add(new WeakReference<>(csi));
 146                         must_free_objs.add(new WeakReference<>(resp));
 147                         must_free_objs.add(new WeakReference<>(underlying_wecs));
 148                         must_free_objs.add(new WeakReference<>(underlying_ecs));
 149                         must_free_objs.add(new WeakReference<>(underlying_cs));
 150                         return resp;
 151                     }
 152                 }
 153
 154                 @Override
 155                 public Result_WriteableEcdsaChannelSignerDecodeErrorZ read_chan_signer(byte[] reader) {
 156                     return underlying_sp.read_chan_signer(reader);
 157                 }
 158             });
 159         }
 160
 161         Watch get_manual_watch() {
 162             Watch.WatchInterface watch_impl = new Watch.WatchInterface() {
 163                 public Result_ChannelMonitorUpdateStatusNoneZ watch_channel(OutPoint funding_txo, ChannelMonitor monitor) {
 164                     synchronized (monitors) {
 165                         assert monitors.put(Arrays.toString(funding_txo.get_txid()), monitor) == null;
 166                     }
 167                     return Result_ChannelMonitorUpdateStatusNoneZ.ok(ChannelMonitorUpdateStatus.LDKChannelMonitorUpdateStatus_Completed);
 168                 }
 169
 170                 public ChannelMonitorUpdateStatus update_channel(OutPoint funding_txo, ChannelMonitorUpdate update) {
 171                     synchronized (monitors) {
 172                         String txid = Arrays.toString(funding_txo.get_txid());
 173                         assert monitors.containsKey(txid);
 174                         Result_NoneNoneZ update_res = monitors.get(txid).update_monitor(update, tx_broadcaster, fee_estimator, logger);
 175                         assert update_res instanceof Result_NoneNoneZ.Result_NoneNoneZ_OK;
 176                     }
 177                     return ChannelMonitorUpdateStatus.LDKChannelMonitorUpdateStatus_Completed;
 178                 }
 179
 180                 @Override
 181                 public ThreeTuple_OutPointCVec_MonitorEventZPublicKeyZ[] release_pending_monitor_events() {
 182                     synchronized (monitors) {
 183                         assert monitors.size() <= 1;
 184                         for (ChannelMonitor mon : monitors.values()) {
 185                             ThreeTuple_OutPointCVec_MonitorEventZPublicKeyZ[] res = new ThreeTuple_OutPointCVec_MonitorEventZPublicKeyZ[1];
 186                             res[0] = ThreeTuple_OutPointCVec_MonitorEventZPublicKeyZ.of(mon.get_funding_txo().get_a(), mon.get_and_clear_pending_monitor_events(), mon.get_counterparty_node_id());
 187                             return res;
 188                         }
 189                     }
 190                     return new ThreeTuple_OutPointCVec_MonitorEventZPublicKeyZ[0];
 191                 }
 192             };
 193             Watch watch = Watch.new_impl(watch_impl);
 194             must_free_objs.add(new WeakReference<>(watch_impl));
 195             must_free_objs.add(new WeakReference<>(watch));
 196             return watch;
 197         }
 198
 199         UserConfig get_config() {
 200             ChannelHandshakeConfig channel_config = ChannelHandshakeConfig.with_default();
 201             channel_config.set_announced_channel(true);
 202             UserConfig config = UserConfig.with_default();
 203             config.set_channel_handshake_config(channel_config);
 204             return config;
 205         }
 206
 207         NioPeerHandler nio_peer_handler;
 208         short nio_port;
 209         final byte seed;
 210         final byte[] key_seed = new byte[32];
 211         final Logger logger;
 212         final FeeEstimator fee_estimator;
 213         final BroadcasterInterface tx_broadcaster;
 214         final KeysManager explicit_keys_manager;
 215         final NodeSigner node_signer;
 216         final SignerProvider signer_provider;
 217         final EntropySource entropy_source;
 218         final ChainMonitor chain_monitor;
 219         NetworkGraph net_graph;
 220         P2PGossipSync route_handler;
 221         final Watch chain_watch;
 222         final HashSet<String> filter_additions;
 223         Option_FilterZ filter;
 224         ChannelManager chan_manager;
 225         PeerManager peer_manager;
 226         final HashMap<String, ChannelMonitor> monitors; // Wow I forgot just how terrible Java is - we can't put a byte array here.
 227         byte[] node_id;
 228         byte[] connected_peer_node_id = null;
 229         final LinkedList<byte[]> broadcast_set = new LinkedList<>();
 230         final LinkedList<Event> pending_manager_events = new LinkedList<>();
 231         private final CustomMessageHandler custom_message_handler;
 232         final LinkedList<byte[]> received_custom_messages = new LinkedList<>();
 233         final LinkedList<byte[]> custom_messages_to_send = new LinkedList<>();
 234         ChannelManagerConstructor constructor = null;
 235         long network_graph_persists = 0;
 236         GcCheck obj = new GcCheck();
 237
 238         private ChannelMonitor test_mon_roundtrip(OutPoint expected_id, byte[] data) {
 239             // Because get_funding_txo() returns an OutPoint in a tuple that is a reference to an OutPoint inside the
 240             // ChannelMonitor, its a good test to ensure that the OutPoint isn't freed (or is cloned) before the
 241             // ChannelMonitor is. This used to be broken.
 242             Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ roundtrip_monitor = UtilMethods.C2Tuple_ThirtyTwoBytesChannelMonitorZ_read(data, this.entropy_source, this.signer_provider);
 243             assert roundtrip_monitor instanceof Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ.Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ_OK;
 244             must_free_objs.add(new WeakReference<>(roundtrip_monitor));
 245             TwoTuple_OutPointCVec_u8ZZ funding_txo = ((Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ.Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ_OK) roundtrip_monitor).res.get_b().get_funding_txo();
 246             must_free_objs.add(new WeakReference<>(funding_txo));
 247             System.gc(); System.runFinalization(); // Give the GC a chance to run.
 248             assert Arrays.equals(funding_txo.get_a().get_txid(), expected_id.get_txid());
 249             assert funding_txo.get_a().get_index() == expected_id.get_index();
 250             Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ roundtrip_two = UtilMethods.C2Tuple_ThirtyTwoBytesChannelMonitorZ_read(data, this.entropy_source, this.signer_provider);
 251             assert roundtrip_two instanceof Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ.Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ_OK;
 252             must_free_objs.add(new WeakReference<>(((Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ.Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ_OK) roundtrip_two).res.get_b()));
 253             must_free_objs.add(new WeakReference<>(((Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ.Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ_OK) roundtrip_two).res));
 254             must_free_objs.add(new WeakReference<>(roundtrip_two));
 255             return ((Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ.Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ_OK) roundtrip_two).res.get_b();
 256         }
 257
 258         private Peer(Object _dummy, byte seed) {
 259             logger = Logger.new_impl((org.ldk.structs.Record arg)->{
 260                 if (arg.get_level() == Level.LDKLevel_Error)
 261                     System.err.println(seed + ": " + arg.get_module_path() + " - " + arg.get_args());
 262                 else
 263                     System.out.println(seed + ": " + arg.get_module_path() + " - " + arg.get_args());
 264             });
 265             fee_estimator = FeeEstimator.new_impl((confirmation_target -> 253));
 266             tx_broadcaster = BroadcasterInterface.new_impl(txn -> {
 267                 synchronized (broadcast_set) {
 268                     for (byte[] tx : txn){
 269                         broadcast_set.add(tx);
 270                     }
 271                     broadcast_set.notifyAll();
 272                 }
 273             });
 274             monitors = new HashMap<>();
 275             this.seed = seed;
 276             Persist persister = Persist.new_impl(new Persist.PersistInterface() {
 277                 @Override
 278                 public ChannelMonitorUpdateStatus persist_new_channel(OutPoint id, ChannelMonitor data, MonitorUpdateId update_id) {
 279                     synchronized (monitors) {
 280                         String key = Arrays.toString(id.to_channel_id());
 281                         ChannelMonitor res = test_mon_roundtrip(id, data.write());
 282                         assert monitors.put(key, res) == null;
 283                     }
 284                     return ChannelMonitorUpdateStatus.LDKChannelMonitorUpdateStatus_Completed;
 285                 }
 286
 287                 @Override
 288                 public ChannelMonitorUpdateStatus update_persisted_channel(OutPoint id, ChannelMonitorUpdate update, ChannelMonitor data, MonitorUpdateId update_id) {
 289                     synchronized (monitors) {
 290                         String key = Arrays.toString(id.to_channel_id());
 291                         ChannelMonitor res = test_mon_roundtrip(id, data.write());
 292                         // Note that we use a serialization-roundtrip copy of data here, not the original, as this can
 293                         // expose the JVM JIT bug where it finalize()s things still being called.
 294                         assert monitors.put(key, res) != null;
 295                     }
 296                     return ChannelMonitorUpdateStatus.LDKChannelMonitorUpdateStatus_Completed;
 297                 }
 298             });
 299
 300             filter_additions = new HashSet<>();
 301             if (use_filter) {
 302                 this.filter = Option_FilterZ.some(Filter.new_impl(new Filter.FilterInterface() {
 303                     @Override public void register_tx(byte[] txid, byte[] script_pubkey) {
 304                         filter_additions.add(Arrays.toString(txid));
 305                     }
 306                     @Override public void register_output(WatchedOutput output) {
 307                         filter_additions.add(Arrays.toString(output.get_outpoint().get_txid()) + ":" + output.get_outpoint().get_index());
 308                     }
 309                 }));
 310             } else {
 311                 this.filter = Option_FilterZ.none();
 312             }
 313
 314             if (use_manual_watch) {
 315                 chain_watch = get_manual_watch();
 316                 chain_monitor = null;
 317             } else {
 318                 chain_monitor = ChainMonitor.of(filter, tx_broadcaster, logger, fee_estimator, persister);
 319                 chain_watch = chain_monitor.as_Watch();
 320             }
 321
 322             for (byte i = 0; i < 32; i++) {
 323                 key_seed[i] = (byte) (i ^ seed);
 324             }
 325             KeysManager keys = KeysManager.of(key_seed, System.currentTimeMillis() / 1000, (int) (System.currentTimeMillis() * 1000));
 326             if (use_km_wrapper) {
 327                 this.signer_provider = manual_signer_provider(keys);
 328                 this.node_signer = manual_node_signer(keys);
 329                 this.entropy_source = EntropySource.new_impl(new EntropySource.EntropySourceInterface() {
 330                     @Override public byte[] get_secure_random_bytes() { return keys.as_EntropySource().get_secure_random_bytes(); }
 331                 });
 332                 this.explicit_keys_manager = null;
 333             } else {
 334                 this.signer_provider = keys.as_SignerProvider();
 335                 this.entropy_source = keys.as_EntropySource();
 336                 this.node_signer = keys.as_NodeSigner();
 337                 this.explicit_keys_manager = keys;
 338             }
 339
 340             this.custom_message_handler = CustomMessageHandler.new_impl(new CustomMessageHandler.CustomMessageHandlerInterface() {
 341                 @Override
 342                 public Result_NoneLightningErrorZ handle_custom_message(Type msg, byte[] sender_node_id) {
 343                     synchronized (received_custom_messages) {
 344                         received_custom_messages.add(msg.write());
 345                         received_custom_messages.notifyAll();
 346                     }
 347                     return Result_NoneLightningErrorZ.ok();
 348                 }
 349
 350                 @Override
 351                 public TwoTuple_PublicKeyTypeZ[] get_and_clear_pending_msg() {
 352                     byte[][] bytes;
 353                     synchronized (custom_messages_to_send) {
 354                         bytes = custom_messages_to_send.toArray(new byte[0][0]);
 355                         custom_messages_to_send.clear();
 356                     }
 357                     TwoTuple_PublicKeyTypeZ[] ret = new TwoTuple_PublicKeyTypeZ[bytes.length];
 358                     for (int i = 0; i < bytes.length; i++) {
 359                         final int msg_idx = i;
 360                         ret[i] = TwoTuple_PublicKeyTypeZ.of(connected_peer_node_id, Type.new_impl(new Type.TypeInterface() {
 361                             @Override public short type_id() { return 4096; }
 362                             @Override public String debug_str() { return "Custom Java Message"; }
 363                             @Override public byte[] write() { return bytes[msg_idx]; }
 364                         }));
 365                     }
 366                     return ret;
 367                 }
 368                 @Override public NodeFeatures provided_node_features() {
 369                     return NodeFeatures.empty();
 370                 }
 371                 @Override public InitFeatures provided_init_features(byte[] their_node_id) {
 372                     return InitFeatures.empty();
 373                 }
 374             }, (message_type, buffer) -> {
 375                 assert message_type == 4096;
 376                 return Result_COption_TypeZDecodeErrorZ.ok(Option_TypeZ.some(Type.new_impl(new Type.TypeInterface() {
 377                     @Override public short type_id() { return 4096; }
 378                     @Override public String debug_str() { return "Custom Java-Decoded Message"; }
 379                     @Override public byte[] write() { return buffer; }
 380                 })));
 381             });
 382         }
 383         private void bind_nio() {
 384             if (!use_nio_peer_handler) return;
 385             if (use_chan_manager_constructor) {
 386                 this.nio_peer_handler = this.constructor.nio_peer_handler;
 387             } else {
 388                 try { this.nio_peer_handler = new NioPeerHandler(peer_manager); } catch (IOException e) { assert false; }
 389             }
 390             for (short i = 10_000; true; i++) {
 391                 try {
 392                     nio_peer_handler.bind_listener(new InetSocketAddress("127.0.0.1", i));
 393                     nio_port = i;
 394                     break;
 395                 } catch (IOException e) { assert i < 10_500; }
 396             }
 397         }
 398         private void setup_route_handler() {
 399             this.route_handler = P2PGossipSync.of(this.net_graph,
 400                 Option_UtxoLookupZ.some(UtxoLookup.new_impl((genesis_hash, short_channel_id) -> UtxoResult.sync(Result_TxOutUtxoLookupErrorZ.ok(gossip_txout)))), this.logger);
 401         }
 402         Peer(byte seed) {
 403             this(null, seed);
 404             this.net_graph = NetworkGraph.of(Network.LDKNetwork_Bitcoin, this.logger);
 405             this.setup_route_handler();
 406
 407             if (use_chan_manager_constructor) {
 408                 this.constructor = new ChannelManagerConstructor(Network.LDKNetwork_Bitcoin, get_config(), new byte[32], 0,
 409                         this.explicit_keys_manager.as_EntropySource(), this.explicit_keys_manager.as_NodeSigner(), this.explicit_keys_manager.as_SignerProvider(),
 410                         this.fee_estimator, this.chain_monitor, this.net_graph,
 411                         ProbabilisticScoringDecayParameters.with_default(), ProbabilisticScoringFeeParameters.with_default(),
 412                         (ChannelManagerConstructor.RouterWrapper)
 413                             (payer_node_id, route_params, first_hops, inflight_htlcs, payment_hash, payment_id, default_router) -> {
 414                                 assert payment_hash != null && payment_id != null;
 415                                 Router r = default_router.as_Router();
 416                                 must_free_objs.add(new WeakReference<>(r));
 417                                 return r.find_route_with_id(payer_node_id, route_params, first_hops, inflight_htlcs, payment_hash, payment_id);
 418                             },
 419                         this.tx_broadcaster, this.logger);
 420                 constructor.chain_sync_completed(new ChannelManagerConstructor.EventHandler() {
 421                     @Override public void handle_event(Event event) {
 422                         synchronized (pending_manager_events) {
 423                             pending_manager_events.add(event);
 424                             pending_manager_events.notifyAll();
 425                         }
 426                     }
 427                     @Override public void persist_manager(byte[] channel_manager_bytes) { assert channel_manager_bytes.length > 1; }
 428                     @Override public void persist_network_graph(byte[] graph_bytes) { assert graph_bytes.length > 1; network_graph_persists += 1; }
 429                     @Override public void persist_scorer(byte[] scorer_bytes) { assert scorer_bytes.length > 1; }
 430                 }, !use_ignore_handler);
 431                 this.chan_manager = constructor.channel_manager;
 432                 this.peer_manager = constructor.peer_manager;
 433                 must_free_objs.add(new WeakReference<>(this.chan_manager));
 434             } else {
 435                 Router router = Router.new_impl(new Router.RouterInterface() {
 436                     @Override
 437                     public Result_RouteLightningErrorZ find_route_with_id(byte[] payer, RouteParameters route_params, ChannelDetails[] first_hops, InFlightHtlcs inflight_htlcs, byte[] _payment_hash, byte[] _payment_id) {
 438                         return find_route(payer, route_params, first_hops, inflight_htlcs);
 439                     }
 440
 441                     @Override
 442                     public Result_CVec_C2Tuple_BlindedPayInfoBlindedPathZZNoneZ create_blinded_payment_paths(byte[] recipient, ChannelDetails[] first_hops, ReceiveTlvs tlvs, long amount_msats) {
 443                         return Result_CVec_C2Tuple_BlindedPayInfoBlindedPathZZNoneZ.err();
 444                     }
 445
 446                     @Override
 447                     public Result_RouteLightningErrorZ find_route(byte[] payer, RouteParameters params, ChannelDetails[] first_hops, InFlightHtlcs inflight_htlcs) {
 448                         while (true) {
 449                             try (ReadOnlyNetworkGraph graph = net_graph.read_only()) {
 450                                 assert graph.channel(424242) == null;
 451                                 long[] channels = graph.list_channels();
 452                                 if (channels.length != 1) {
 453                                     // If we're using a NioPeerHandler, the handling of announcement signatures and
 454                                     // channel broadcasting may be done async, so just wait until the channel shows up.
 455                                     assert use_nio_peer_handler;
 456                                     continue;
 457                                 }
 458                                 ChannelInfo chan = graph.channel(channels[0]);
 459                                 assert Arrays.equals(chan.get_node_one().as_slice(), chan.get_node_one().write());
 460                                 assert Arrays.equals(chan.get_node_one().as_slice(), chan_manager.get_our_node_id()) ||
 461                                         Arrays.equals(chan.get_node_two().as_slice(), chan_manager.get_our_node_id());
 462                                 break;
 463                             }
 464                         }
 465                         return UtilMethods.find_route(payer, params, net_graph, first_hops, logger,
 466                                 ScoreLookUp.new_impl((candidate, usage, params1) -> candidate.source().as_slice()[1]),
 467                                 ProbabilisticScoringFeeParameters.with_default(), new byte[32]);
 468                     }
 469                 }, new MessageRouter.MessageRouterInterface() {
 470                     @Override public Result_OnionMessagePathNoneZ find_path(byte[] sender, byte[][] peers, Destination destination) {
 471                         return Result_OnionMessagePathNoneZ.err();
 472                     }
 473                     @Override public Result_CVec_BlindedPathZNoneZ create_blinded_paths(byte[] recipient, byte[][] peers) {
 474                         return Result_CVec_BlindedPathZNoneZ.err();
 475                     }
 476                 });
 477                 ChainParameters params = ChainParameters.of(Network.LDKNetwork_Bitcoin, BestBlock.of(new byte[32], 0));
 478                 this.chan_manager = ChannelManager.of(this.fee_estimator, chain_watch, tx_broadcaster, router, logger,
 479                     this.entropy_source, this.node_signer, this.signer_provider, get_config(), params,
 480                         (int)(System.currentTimeMillis() / 1000));
 481                 this.peer_manager = PeerManager.of(chan_manager.as_ChannelMessageHandler(), route_handler.as_RoutingMessageHandler(),
 482                         IgnoringMessageHandler.of().as_OnionMessageHandler(), this.custom_message_handler, 0xdeadbeef,
 483                         this.entropy_source.get_secure_random_bytes(), logger, this.node_signer);
 484            }
 485
 486             this.node_id = chan_manager.get_our_node_id();
 487             this.filter = null;
 488             bind_nio();
 489             System.gc();
 490         }
 491
 492         Object ptr_to;
 493         Peer(Peer orig) {
 494             this(null, orig.seed);
 495             if (use_chan_manager_constructor) {
 496                 byte[][] monitors = {orig.monitors.values().stream().iterator().next().write()};
 497                 byte[] serialized = orig.chan_manager.write();
 498                 byte[] serialized_graph = orig.net_graph.write();
 499                 byte[] serialized_scorer = orig.constructor.scorer.write();
 500                 try {
 501                     Filter filter_nullable = null;
 502                     if (this.filter instanceof Option_FilterZ.Some) {
 503                         filter_nullable = ((Option_FilterZ.Some) this.filter).some;
 504                     }
 505                     this.constructor = new ChannelManagerConstructor(serialized, monitors, get_config(),
 506                         this.explicit_keys_manager.as_EntropySource(), this.explicit_keys_manager.as_NodeSigner(), this.explicit_keys_manager.as_SignerProvider(),
 507                         this.fee_estimator, this.chain_monitor, filter_nullable,
 508                             serialized_graph, ProbabilisticScoringDecayParameters.with_default(),
 509                             ProbabilisticScoringFeeParameters.with_default(), serialized_scorer, null,
 510                             this.tx_broadcaster, this.logger);
 511                     try {
 512                         // Test that ChannelManagerConstructor correctly rejects duplicate ChannelMonitors
 513                         byte[][] monitors_dupd = new byte[2][];
 514                         monitors_dupd[0] = monitors[0];
 515                         monitors_dupd[1] = monitors[0];
 516                         ChannelManagerConstructor constr = new ChannelManagerConstructor(serialized, monitors_dupd, get_config(),
 517                             this.explicit_keys_manager.as_EntropySource(), this.explicit_keys_manager.as_NodeSigner(), this.explicit_keys_manager.as_SignerProvider(),
 518                             this.fee_estimator, this.chain_monitor, filter_nullable,
 519                                 serialized_graph, ProbabilisticScoringDecayParameters.with_default(),
 520                                 ProbabilisticScoringFeeParameters.with_default(), serialized_scorer, null,
 521                                 this.tx_broadcaster, this.logger);
 522                         assert false;
 523                     } catch (ChannelManagerConstructor.InvalidSerializedDataException e) {}
 524                     this.net_graph = this.constructor.net_graph;
 525                     setup_route_handler();
 526                     constructor.chain_sync_completed(new ChannelManagerConstructor.EventHandler() {
 527                         @Override public void handle_event(Event event) {
 528                             synchronized (pending_manager_events) {
 529                                 pending_manager_events.add(event);
 530                                 pending_manager_events.notifyAll();
 531                             }
 532                         }
 533                         @Override public void persist_manager(byte[] channel_manager_bytes) { assert channel_manager_bytes.length > 1; }
 534                         @Override public void persist_network_graph(byte[] graph_bytes) { assert graph_bytes.length > 1; network_graph_persists += 1; }
 535                         @Override public void persist_scorer(byte[] scorer_bytes) { assert scorer_bytes.length > 1; }
 536                     }, !use_ignore_handler);
 537                     this.chan_manager = constructor.channel_manager;
 538                     this.peer_manager = constructor.peer_manager;
 539                     must_free_objs.add(new WeakReference<>(this.chan_manager));
 540                     // If we are using a ChannelManagerConstructor, we may have pending events waiting on the old peer
 541                     // which have been removed from the ChannelManager but which we still need to handle.
 542                     this.pending_manager_events.addAll(orig.pending_manager_events);
 543                     if (!this.pending_manager_events.isEmpty()) {
 544                         // However, this implies cross_reload_ref_pollution
 545                         cross_reload_ref_pollution = true;
 546                     }
 547                 } catch (ChannelManagerConstructor.InvalidSerializedDataException e) {
 548                     assert false;
 549                 }
 550             } else {
 551                 this.net_graph = NetworkGraph.of(Network.LDKNetwork_Bitcoin, this.logger);
 552                 Router router = Router.new_impl(new Router.RouterInterface() {
 553                     @Override
 554                     public Result_RouteLightningErrorZ find_route_with_id(byte[] payer, RouteParameters route_params, ChannelDetails[] first_hops, InFlightHtlcs inflight_htlcs, byte[] _payment_hash, byte[] _payment_id) {
 555                         return find_route(payer, route_params, first_hops, inflight_htlcs);
 556                     }
 557
 558                     @Override
 559                     public Result_CVec_C2Tuple_BlindedPayInfoBlindedPathZZNoneZ create_blinded_payment_paths(byte[] recipient, ChannelDetails[] first_hops, ReceiveTlvs tlvs, long amount_msats) {
 560                         return Result_CVec_C2Tuple_BlindedPayInfoBlindedPathZZNoneZ.err();
 561                     }
 562
 563                     @Override
 564                     public Result_RouteLightningErrorZ find_route(byte[] payer, RouteParameters params, ChannelDetails[] first_hops, InFlightHtlcs inflight_htlcs) {
 565                         while (true) {
 566                             try (ReadOnlyNetworkGraph graph = net_graph.read_only()) {
 567                                 assert graph.channel(424242) == null;
 568                                 long[] channels = graph.list_channels();
 569                                 if (channels.length != 1) {
 570                                     // If we're using a NioPeerHandler, the handling of announcement signatures and
 571                                     // channel broadcasting may be done async, so just wait until the channel shows up.
 572                                     assert use_nio_peer_handler;
 573                                     continue;
 574                                 }
 575                                 ChannelInfo chan = graph.channel(channels[0]);
 576                                 assert Arrays.equals(chan.get_node_one().as_slice(), chan.get_node_one().write());
 577                                 assert Arrays.equals(chan.get_node_one().as_slice(), chan_manager.get_our_node_id()) ||
 578                                         Arrays.equals(chan.get_node_two().as_slice(), chan_manager.get_our_node_id());
 579                                 break;
 580                             }
 581                         }
 582                         return UtilMethods.find_route(payer, params, net_graph, first_hops, logger,
 583                                 ScoreLookUp.new_impl((candidate, usage, params1) -> candidate.source().as_slice()[0]),
 584                                 ProbabilisticScoringFeeParameters.with_default(), new byte[32]);
 585                     }
 586                 }, new MessageRouter.MessageRouterInterface() {
 587                     @Override public Result_OnionMessagePathNoneZ find_path(byte[] sender, byte[][] peers, Destination destination) {
 588                         return Result_OnionMessagePathNoneZ.err();
 589                     }
 590                     @Override public Result_CVec_BlindedPathZNoneZ create_blinded_paths(byte[] recipient, byte[][] peers) {
 591                         return Result_CVec_BlindedPathZNoneZ.err();
 592                     }
 593                 });
 594                 this.setup_route_handler();
 595                 ChannelMonitor[] monitors = new ChannelMonitor[1];
 596                 assert orig.monitors.size() == 1;
 597                 if (!break_cross_peer_refs) {
 598                     monitors[0] = orig.monitors.values().stream().iterator().next();
 599                 } else {
 600                     byte[] serialized = orig.monitors.values().stream().iterator().next().write();
 601                     Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ res =
 602                             UtilMethods.C2Tuple_ThirtyTwoBytesChannelMonitorZ_read(serialized, this.entropy_source, this.signer_provider);
 603                     assert res instanceof Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ.Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ_OK;
 604                     monitors[0] = ((Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ.Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ_OK) res).res.get_b();
 605                 }
 606                 byte[] serialized = orig.chan_manager.write();
 607                 Result_C2Tuple_ThirtyTwoBytesChannelManagerZDecodeErrorZ read_res =
 608                         UtilMethods.C2Tuple_ThirtyTwoBytesChannelManagerZ_read(serialized, this.entropy_source, this.node_signer, this.signer_provider, this.fee_estimator, this.chain_watch, this.tx_broadcaster, router, this.logger, get_config(), monitors);
 609                 assert read_res instanceof Result_C2Tuple_ThirtyTwoBytesChannelManagerZDecodeErrorZ.Result_C2Tuple_ThirtyTwoBytesChannelManagerZDecodeErrorZ_OK;
 610                 this.chan_manager = ((Result_C2Tuple_ThirtyTwoBytesChannelManagerZDecodeErrorZ.Result_C2Tuple_ThirtyTwoBytesChannelManagerZDecodeErrorZ_OK) read_res).res.get_b();
 611                 this.chain_watch.watch_channel(monitors[0].get_funding_txo().get_a(), monitors[0]);
 612                 this.peer_manager = PeerManager.of(chan_manager.as_ChannelMessageHandler(), route_handler.as_RoutingMessageHandler(),
 613                         IgnoringMessageHandler.of().as_OnionMessageHandler(), this.custom_message_handler,
 614                         (int)(System.currentTimeMillis() / 1000), this.entropy_source.get_secure_random_bytes(),
 615                         logger, this.node_signer);
 616                 if (!break_cross_peer_refs && (use_manual_watch || use_km_wrapper)) {
 617                     // When we pass monitors[0] into chain_watch.watch_channel we create a reference from the new Peer to a
 618                     // field in the old peer, preventing freeing of the original Peer until the new Peer is freed. Thus, we
 619                     // shouldn't bother waiting for the original to be freed later on.
 620                     cross_reload_ref_pollution = true;
 621                 }
 622             }
 623             this.node_id = chan_manager.get_our_node_id();
 624             bind_nio();
 625
 626             if (cross_reload_ref_pollution) {
 627                 // This really, really needs to be handled at the bindings layer, but its rather complicated -
 628                 // ChannelSigners can be cloned and passed around without java being involved, resulting in them being
 629                 // owned by both one or more ChannelMonitors and a ChannelManager, with only one having proper pointers
 630                 // to the ChannelSigner. Ideally, the ChannelSigner would have a global reference to the Java
 631                 // implementation class, but that results in circular references. Instead, we need some ability to,
 632                 // while cloning ChannelSigners, add new references in the calling Java struct (ie ChannelMonitor) to
 633                 // the ChannelSigner.
 634                 this.ptr_to = orig.chan_manager;
 635             }
 636             this.filter = null;
 637         }
 638
 639         TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[] connect_block(Block b, int height, long expected_monitor_update_len) {
 640             byte[] header = Arrays.copyOfRange(b.bitcoinSerialize(), 0, 80);
 641             TwoTuple_usizeTransactionZ[] txn;
 642             if (b.hasTransactions()) {
 643                 assert b.getTransactions().size() == 1;
 644                 TwoTuple_usizeTransactionZ txp = TwoTuple_usizeTransactionZ.of((long) 0, b.getTransactions().get(0).bitcoinSerialize());
 645                 txn = new TwoTuple_usizeTransactionZ[]{txp};
 646             } else
 647                 txn = new TwoTuple_usizeTransactionZ[0];
 648             if (chain_monitor != null) {
 649                 chan_manager.as_Listen().block_connected(b.bitcoinSerialize(), height);
 650                 chain_monitor.as_Listen().block_connected(b.bitcoinSerialize(), height);
 651             } else {
 652                 chan_manager.as_Confirm().transactions_confirmed(header, txn, height);
 653                 chan_manager.as_Confirm().best_block_updated(header, height);
 654                 // Connect manually if we aren't using a ChainMonitor and are implementing Watch ourselves
 655                 synchronized (monitors) {
 656                     assert monitors.size() == 1;
 657                     for (ChannelMonitor mon : monitors.values()) {
 658                         TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[] ret = mon.block_connected(header, txn, height, tx_broadcaster, fee_estimator, logger);
 659                         assert ret.length == expected_monitor_update_len;
 660                         return ret;
 661                     }
 662                 }
 663             }
 664             return null;
 665         }
 666
 667         Event[] get_monitor_events(int expected_len) {
 668             if (use_chan_manager_constructor) {
 669                 while (true) {
 670                     synchronized (this.pending_manager_events) {
 671                         if (expected_len != 0 && this.pending_manager_events.size() == expected_len) {
 672                             break;
 673                         }
 674                     }
 675                     if (expected_len == 0) {
 676                         try { Thread.sleep(500); } catch (InterruptedException e) { assert false; }
 677                         break;
 678                     } else {
 679                         Thread.yield();
 680                     }
 681                 }
 682                 synchronized (this.pending_manager_events) {
 683                     Event[] res = this.pending_manager_events.toArray(new Event[0]);
 684                     this.pending_manager_events.clear();
 685                     assert res.length == expected_len;
 686                     return res;
 687                 }
 688             } else if (chain_monitor != null) {
 689                 ArrayList<Event> l = new ArrayList<Event>();
 690                 chain_monitor.as_EventsProvider().process_pending_events(EventHandler.new_impl(l::add));
 691                 assert l.size() == expected_len;
 692                 return l.toArray(new Event[0]);
 693             } else {
 694                 synchronized (monitors) {
 695                     assert monitors.size() == 1;
 696                     for (ChannelMonitor mon : monitors.values()) {
 697                         ArrayList<Event> res = new ArrayList<Event>();
 698                         EventHandler handler = EventHandler.new_impl(new EventHandler.EventHandlerInterface() {
 699                             @Override public void handle_event(Event event) {
 700                                 res.add(event);
 701                             }
 702                         });
 703                         mon.process_pending_events(handler);
 704                         assert res.size() == expected_len;
 705                         return res.toArray(new Event[0]);
 706                     }
 707                     return null;
 708                 }
 709             }
 710         }
 711
 712         Event[] get_manager_events(int expected_len, Peer peer1, Peer peer2) {
 713             assert expected_len != 0;
 714             if (!use_nio_peer_handler) {
 715                 maybe_exchange_peer_messages(peer1, peer2);
 716             }
 717             Event[] res = new Event[0];
 718             if (use_chan_manager_constructor) {
 719                 while (res.length < expected_len) {
 720                     synchronized (this.pending_manager_events) {
 721                         if (this.pending_manager_events.size() >= expected_len) {
 722                             res = this.pending_manager_events.toArray(res);
 723                             assert res.length == expected_len;
 724                             this.pending_manager_events.clear();
 725                         }
 726                         if (res.length < expected_len) {
 727                             try { this.pending_manager_events.wait(); } catch (InterruptedException e) { assert false; }
 728                         }
 729                     }
 730                 }
 731             } else {
 732                 ArrayList<Event> l = new ArrayList<Event>();
 733                 while (l.size() < expected_len) {
 734                     Thread.yield();
 735                     if (use_nio_peer_handler) {
 736                         peer1.nio_peer_handler.check_events();
 737                         peer2.nio_peer_handler.check_events();
 738                     }
 739                     chan_manager.as_EventsProvider().process_pending_events(EventHandler.new_impl(l::add));
 740                 }
 741                 return l.toArray(new Event[0]);
 742             }
 743             assert res.length == expected_len;
 744             return res;
 745         }
 746     }
 747
 748     static class DescriptorHolder { SocketDescriptor val; }
 749
 750     boolean running = false;
 751     final LinkedList<Runnable> runqueue = new LinkedList();
 752     boolean ran = false;
 753     Thread t = new Thread(() -> {
 754             while (true) {
 755                 try {
 756                     Runnable r;
 757                     synchronized (runqueue) {
 758                         while (runqueue.isEmpty()) {
 759                             runqueue.wait();
 760                         }
 761                         running = true;
 762                         r = runqueue.pollFirst();
 763                     }
 764                     r.run();
 765                     synchronized (runqueue) {
 766                         running = false;
 767                         runqueue.notifyAll();
 768                     }
 769                 } catch (InterruptedException e) {
 770                     return;
 771                 }
 772             }
 773     });
 774
 775     void maybe_exchange_peer_messages(Peer peer1, Peer peer2) {
 776         if (!use_nio_peer_handler) {
 777             while (true) {
 778                 peer1.peer_manager.process_events();
 779                 peer2.peer_manager.process_events();
 780                 synchronized (runqueue) {
 781                     if (runqueue.isEmpty() && !running) {
 782                         if (ran) {
 783                             ran = false;
 784                             continue;
 785                         } else { break; }
 786                     }
 787                     try { runqueue.wait(); } catch (InterruptedException e) { assert false; }
 788                 }
 789             }
 790         } else if (!use_chan_manager_constructor) {
 791             peer1.nio_peer_handler.check_events();
 792             peer2.nio_peer_handler.check_events();
 793         }
 794     }
 795     void do_disconnect_event(PeerManager pm, SocketDescriptor descriptor) {
 796         if (!t.isAlive()) t.start();
 797         synchronized (runqueue) {
 798             ran = true;
 799             runqueue.add(() -> {
 800                 pm.socket_disconnected(descriptor);
 801             });
 802             runqueue.notifyAll();
 803         }
 804     }
 805     void do_read_event(PeerManager pm, SocketDescriptor descriptor, byte[] data) {
 806         if (!t.isAlive()) t.start();
 807         synchronized (runqueue) {
 808             ran = true;
 809             runqueue.add(() -> {
 810                 Result_boolPeerHandleErrorZ res = pm.read_event(descriptor, data);
 811                 assert res instanceof Result_boolPeerHandleErrorZ.Result_boolPeerHandleErrorZ_OK;
 812             });
 813             runqueue.notifyAll();
 814         }
 815         must_free_objs.add(new WeakReference<>(data));
 816     }
 817
 818     void connect_peers(final Peer peer1, final Peer peer2) {
 819         peer2.connected_peer_node_id = peer1.node_id;
 820         peer1.connected_peer_node_id = peer2.node_id;
 821         if (use_nio_peer_handler) {
 822             try {
 823                 peer1.nio_peer_handler.connect(peer2.chan_manager.get_our_node_id(), new InetSocketAddress("127.0.0.1", peer2.nio_port), 100);
 824             } catch (IOException e) { assert false; }
 825             while (peer1.peer_manager.get_peer_node_ids().length == 0 || peer2.peer_manager.get_peer_node_ids().length == 0) {
 826                 Thread.yield();
 827             }
 828         } else {
 829             DescriptorHolder descriptor1 = new DescriptorHolder();
 830             DescriptorHolder descriptor1ref = descriptor1;
 831             SocketDescriptor descriptor2 = SocketDescriptor.new_impl(new SocketDescriptor.SocketDescriptorInterface() {
 832                 @Override
 833                 public long send_data(byte[] data, boolean resume_read) {
 834                     do_read_event(peer1.peer_manager, descriptor1ref.val, data);
 835                     return data.length;
 836                 }
 837
 838                 @Override public void disconnect_socket() { do_disconnect_event(peer1.peer_manager, descriptor1ref.val); }
 839                 @Override public boolean eq(SocketDescriptor other_arg) { return other_arg.hash() == 2; }
 840                 @Override public long hash() { return 2; }
 841             });
 842
 843             descriptor1.val = SocketDescriptor.new_impl(new SocketDescriptor.SocketDescriptorInterface() {
 844                 @Override
 845                 public long send_data(byte[] data, boolean resume_read) {
 846                     do_read_event(peer2.peer_manager, descriptor2, data);
 847                     return data.length;
 848                 }
 849
 850                 @Override public void disconnect_socket() { do_disconnect_event(peer2.peer_manager, descriptor2); }
 851                 @Override public boolean eq(SocketDescriptor other_arg) { return other_arg.hash() == 1; }
 852                 @Override public long hash() { return 1; }
 853             });
 854
 855             Result_CVec_u8ZPeerHandleErrorZ conn_res = peer1.peer_manager.new_outbound_connection(peer2.node_id, descriptor1.val, Option_SocketAddressZ.none());
 856             assert conn_res instanceof Result_CVec_u8ZPeerHandleErrorZ.Result_CVec_u8ZPeerHandleErrorZ_OK;
 857
 858             Result_NonePeerHandleErrorZ inbound_conn_res = peer2.peer_manager.new_inbound_connection(descriptor2, Option_SocketAddressZ.none());
 859             assert inbound_conn_res instanceof Result_NonePeerHandleErrorZ.Result_NonePeerHandleErrorZ_OK;
 860             do_read_event(peer2.peer_manager, descriptor2, ((Result_CVec_u8ZPeerHandleErrorZ.Result_CVec_u8ZPeerHandleErrorZ_OK) conn_res).res);
 861
 862             maybe_exchange_peer_messages(peer1, peer2);
 863         }
 864     }
 865
 866     TestState do_test_message_handler() throws InterruptedException {
 867         Peer peer1 = new Peer((byte) 1);
 868         Peer peer2 = new Peer((byte) 2);
 869
 870         connect_peers(peer1, peer2);
 871
 872         UInt128 user_id = new UInt128(new byte[] {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16});
 873
 874         Result_ThirtyTwoBytesAPIErrorZ cc_res = peer1.chan_manager.create_channel(peer2.node_id, 100000, 1000, user_id, Option_ThirtyTwoBytesZ.none(), null);
 875         assert cc_res instanceof Result_ThirtyTwoBytesAPIErrorZ.Result_ThirtyTwoBytesAPIErrorZ_OK;
 876
 877         // Previously, this was a SEGFAULT instead of get_funding_txo() returning null.
 878         ChannelDetails pre_funding_chan = peer1.chan_manager.list_channels()[0];
 879         assert pre_funding_chan.get_funding_txo() == null;
 880
 881         Event[] events = peer1.get_manager_events(1, peer1, peer2);
 882         assert events[0] instanceof Event.FundingGenerationReady;
 883         assert ((Event.FundingGenerationReady) events[0]).channel_value_satoshis == 100000;
 884         assert ((Event.FundingGenerationReady) events[0]).user_channel_id.equals(user_id);
 885         byte[] funding_spk = ((Event.FundingGenerationReady) events[0]).output_script;
 886         assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
 887         byte[] chan_id = ((Event.FundingGenerationReady) events[0]).temporary_channel_id;
 888
 889         BitcoinNetworkParams bitcoinj_net = BitcoinNetworkParams.of(BitcoinNetwork.MAINNET);
 890
 891         Transaction funding_input = new Transaction(bitcoinj_net);
 892         funding_input.addOutput(Coin.SATOSHI.multiply(100000), new Script(funding_spk));
 893         Transaction funding = new Transaction(bitcoinj_net);
 894         funding.addInput(funding_input.getOutput(0));
 895         funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
 896         funding.getInput(0).getWitness().setPush(0, new byte[]{0x1});
 897         funding.addOutput(Coin.SATOSHI.multiply(100000), new Script(funding_spk));
 898         Result_NoneAPIErrorZ funding_res = peer1.chan_manager.funding_transaction_generated(chan_id, peer2.node_id, funding.bitcoinSerialize());
 899         assert funding_res instanceof Result_NoneAPIErrorZ.Result_NoneAPIErrorZ_OK;
 900
 901         gossip_txout = new TxOut(100000, funding_spk);
 902
 903         maybe_exchange_peer_messages(peer1, peer2);
 904         synchronized (peer1.broadcast_set) {
 905             while (peer1.broadcast_set.size() != 1) {
 906                 peer1.broadcast_set.wait();
 907             }
 908         }
 909
 910         events = peer1.get_manager_events(1, peer1, peer2);
 911         assert events[0] instanceof Event.ChannelPending;
 912
 913         events = peer2.get_manager_events(1, peer1, peer2);
 914         assert events[0] instanceof Event.ChannelPending;
 915
 916         assert peer1.broadcast_set.size() == 1;
 917         assert Arrays.equals(peer1.broadcast_set.get(0), funding.bitcoinSerialize());
 918         peer1.broadcast_set.clear();
 919
 920         Block b = new Block(bitcoinj_net, 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
 921         peer1.connect_block(b, 1, 0);
 922         peer2.connect_block(b, 1, 0);
 923
 924         for (int height = 2; height < 10; height++) {
 925             b = new Block(bitcoinj_net, 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[0]));
 926             peer1.connect_block(b, height, 0);
 927             peer2.connect_block(b, height, 0);
 928         }
 929
 930         maybe_exchange_peer_messages(peer1, peer2);
 931         while (peer1.chan_manager.list_usable_channels().length != 1 || peer2.chan_manager.list_usable_channels().length != 1) ;
 932
 933         events = peer1.get_manager_events(1, peer1, peer2);
 934         assert events[0] instanceof Event.ChannelReady;
 935
 936         events = peer2.get_manager_events(1, peer1, peer2);
 937         assert events[0] instanceof Event.ChannelReady;
 938
 939         ChannelDetails[] peer1_chans = peer1.chan_manager.list_usable_channels();
 940         ChannelDetails[] peer2_chans = peer2.chan_manager.list_usable_channels();
 941         assert peer1_chans.length == 1;
 942         assert peer2_chans.length == 1;
 943         assert peer1_chans[0].get_channel_value_satoshis() == 100000;
 944         assert peer1_chans[0].get_is_usable();
 945         Option_u64Z short_chan_id = peer1_chans[0].get_short_channel_id();
 946         assert short_chan_id instanceof Option_u64Z.Some;
 947         assert ((Option_u64Z.Some)short_chan_id).some == (1L << 40); // 0th output in the 0th transaction in the 1st block
 948         assert Arrays.equals(peer1_chans[0].get_channel_id(), funding.getTxId().getReversedBytes());
 949         assert Arrays.equals(peer2_chans[0].get_channel_id(), funding.getTxId().getReversedBytes());
 950
 951         // Generate a random invoice description to exercise the string conversion logic a good bit
 952         String invoice_description;
 953         char[] string_bytes = new char[16];
 954         try {
 955             new FileReader("/dev/urandom").read(string_bytes);
 956         } catch (Exception e) { assert false; }
 957         invoice_description = new String(string_bytes);
 958
 959         Result_Bolt11InvoiceSignOrCreationErrorZ invoice = UtilMethods.create_invoice_from_channelmanager(peer2.chan_manager, peer2.node_signer, peer2.logger, Currency.LDKCurrency_Bitcoin, Option_u64Z.some(10000000), invoice_description, 7200, Option_u16Z.none());
 960         assert invoice instanceof Result_Bolt11InvoiceSignOrCreationErrorZ.Result_Bolt11InvoiceSignOrCreationErrorZ_OK;
 961         System.out.println("Got invoice: " + ((Result_Bolt11InvoiceSignOrCreationErrorZ.Result_Bolt11InvoiceSignOrCreationErrorZ_OK) invoice).res.to_str());
 962
 963         String fuck = ((Result_Bolt11InvoiceSignOrCreationErrorZ.Result_Bolt11InvoiceSignOrCreationErrorZ_OK) invoice).res.to_str();
 964         Result_Bolt11InvoiceParseOrSemanticErrorZ parsed_invoice = Bolt11Invoice.from_str(fuck);
 965 if (parsed_invoice instanceof Result_Bolt11InvoiceParseOrSemanticErrorZ.Result_Bolt11InvoiceParseOrSemanticErrorZ_Err) {
 966     System.err.println(((Result_Bolt11InvoiceParseOrSemanticErrorZ.Result_Bolt11InvoiceParseOrSemanticErrorZ_Err) parsed_invoice).err.to_str());
 967 }
 968         assert parsed_invoice instanceof Result_Bolt11InvoiceParseOrSemanticErrorZ.Result_Bolt11InvoiceParseOrSemanticErrorZ_OK;
 969         assert ((Result_Bolt11InvoiceParseOrSemanticErrorZ.Result_Bolt11InvoiceParseOrSemanticErrorZ_OK) parsed_invoice).res.fallback_addresses().length == 0;
 970         assert Arrays.equals(((Result_Bolt11InvoiceParseOrSemanticErrorZ.Result_Bolt11InvoiceParseOrSemanticErrorZ_OK) parsed_invoice).res.payment_hash(), ((Result_Bolt11InvoiceSignOrCreationErrorZ.Result_Bolt11InvoiceSignOrCreationErrorZ_OK) invoice).res.payment_hash());
 971         SignedRawBolt11Invoice signed_raw = ((Result_Bolt11InvoiceParseOrSemanticErrorZ.Result_Bolt11InvoiceParseOrSemanticErrorZ_OK) parsed_invoice).res.into_signed_raw();
 972         RawBolt11Invoice raw_invoice = signed_raw.raw_invoice();
 973         byte[] desc_hash = raw_invoice.signable_hash();
 974         Description raw_invoice_description = raw_invoice.description();
 975         String description_string = raw_invoice_description.into_inner().get_a();
 976         boolean has_null = false;
 977         for (byte db : invoice_description.getBytes())
 978             if (db == 0)
 979                 has_null = true;
 980         if (!has_null) // Null codepoints are dropped, so may fail
 981             assert description_string.equals(invoice_description);
 982
 983         // Do a trivial test of constructing a phantom invoice
 984         Result_Bolt11InvoiceSignOrCreationErrorZ phantom_invoice = UtilMethods.create_phantom_invoice(
 985                 Option_u64Z.some(42000),
 986                 Option_ThirtyTwoBytesZ.none(),
 987                 "Phantom Invoice", 7200,
 988                 new PhantomRouteHints[]{ peer2.chan_manager.get_phantom_route_hints() },
 989                 peer2.entropy_source,
 990                 PhantomKeysManager.of(peer2.key_seed, 42, 42, new byte[32]).as_NodeSigner(),
 991                 peer2.logger, Currency.LDKCurrency_Bitcoin, Option_u16Z.none(),
 992                 System.currentTimeMillis() / 1000);
 993         assert phantom_invoice.is_ok();
 994         RouteHint[] hints = ((Result_Bolt11InvoiceSignOrCreationErrorZ.Result_Bolt11InvoiceSignOrCreationErrorZ_OK)phantom_invoice).res.route_hints();
 995         assert hints.length == 1;
 996         RouteHintHop[] val = hints[0].get_a();
 997         assert hints[0].get_a().length == 1; // Our one channel is public so we should just have a single-hop hint
 998
 999         if (!use_invoice_payer) {
1000             byte[] payment_hash = ((Result_Bolt11InvoiceSignOrCreationErrorZ.Result_Bolt11InvoiceSignOrCreationErrorZ_OK) invoice).res.payment_hash();
1001             byte[] payment_secret = ((Result_Bolt11InvoiceSignOrCreationErrorZ.Result_Bolt11InvoiceSignOrCreationErrorZ_OK) invoice).res.payment_secret();
1002             byte[] dest_node_id = ((Result_Bolt11InvoiceSignOrCreationErrorZ.Result_Bolt11InvoiceSignOrCreationErrorZ_OK) invoice).res.recover_payee_pub_key();
1003             assert Arrays.equals(dest_node_id, peer2.node_id);
1004             Bolt11InvoiceFeatures invoice_features = ((Result_Bolt11InvoiceSignOrCreationErrorZ.Result_Bolt11InvoiceSignOrCreationErrorZ_OK) invoice).res.features();
1005             RouteHint[] route_hints = ((Result_Bolt11InvoiceSignOrCreationErrorZ.Result_Bolt11InvoiceSignOrCreationErrorZ_OK) invoice).res.route_hints();
1006
1007             Payee payee = Payee.clear(peer2.node_id, route_hints, invoice_features, 42);
1008             PaymentParameters pay_params = PaymentParameters.of(payee, Option_u64Z.none(), 6*24*14, (byte)1, (byte)2, new long[0], new long[0]);
1009             RouteParameters route_params = RouteParameters.from_payment_params_and_value(pay_params, 10000000);
1010             Result_RouteLightningErrorZ route_res = UtilMethods.find_route(
1011                     peer1.chan_manager.get_our_node_id(), route_params, peer1.net_graph,
1012                     peer1_chans, peer1.logger,
1013                     ProbabilisticScorer.of(ProbabilisticScoringDecayParameters.with_default(), peer1.net_graph, peer1.logger).as_ScoreLookUp(),
1014                     ProbabilisticScoringFeeParameters.with_default(), new byte[32]);
1015             assert route_res instanceof Result_RouteLightningErrorZ.Result_RouteLightningErrorZ_OK;
1016             Route route = ((Result_RouteLightningErrorZ.Result_RouteLightningErrorZ_OK) route_res).res;
1017             assert route.get_paths().length == 1;
1018             assert route.get_paths()[0].get_hops().length == 1;
1019             assert route.get_paths()[0].final_value_msat() == 10000000;
1020
1021             byte[] payment_id = new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 };
1022             Result_NonePaymentSendFailureZ payment_res = peer1.chan_manager.send_payment_with_route(route, payment_hash, RecipientOnionFields.secret_only(payment_secret), payment_id);
1023             assert payment_res instanceof Result_NonePaymentSendFailureZ.Result_NonePaymentSendFailureZ_OK;
1024
1025             RouteHop[] hops = new RouteHop[1];
1026             byte[] hop_pubkey = new byte[33];
1027             hop_pubkey[0] = 3;
1028             hop_pubkey[1] = 42;
1029             NodeFeatures node_features = NodeFeatures.empty();
1030             ChannelFeatures channel_features = ChannelFeatures.empty();
1031             hops[0] = RouteHop.of(hop_pubkey, node_features, 42, channel_features, 100, 0, false);
1032             Path[] paths = new Path[1];
1033             paths[0] = Path.of(hops, null);
1034             Route r2 = Route.of(paths, RouteParameters.from_payment_params_and_value(pay_params, 100));
1035             payment_res = peer1.chan_manager.send_payment_with_route(r2, payment_hash, RecipientOnionFields.secret_only(payment_secret), payment_id);
1036             assert payment_res instanceof Result_NonePaymentSendFailureZ.Result_NonePaymentSendFailureZ_Err;
1037         } else {
1038             Result_C3Tuple_ThirtyTwoBytesRecipientOnionFieldsRouteParametersZNoneZ pay_params_res =
1039                 UtilMethods.payment_parameters_from_invoice(((Result_Bolt11InvoiceParseOrSemanticErrorZ.Result_Bolt11InvoiceParseOrSemanticErrorZ_OK) parsed_invoice).res);
1040             assert pay_params_res.is_ok();
1041             Result_C3Tuple_ThirtyTwoBytesRecipientOnionFieldsRouteParametersZNoneZ.Result_C3Tuple_ThirtyTwoBytesRecipientOnionFieldsRouteParametersZNoneZ_OK pay_params =
1042                 (Result_C3Tuple_ThirtyTwoBytesRecipientOnionFieldsRouteParametersZNoneZ.Result_C3Tuple_ThirtyTwoBytesRecipientOnionFieldsRouteParametersZNoneZ_OK)pay_params_res;
1043             Result_NoneRetryableSendFailureZ pay_res = peer1.chan_manager.send_payment(pay_params.res.get_a(), pay_params.res.get_b(), new byte[32], pay_params.res.get_c(), Retry.attempts(0));
1044             assert pay_res.is_ok();
1045         }
1046
1047         if (reload_peers) {
1048             assert peer1.network_graph_persists == 0;
1049             assert peer2.network_graph_persists == 0;
1050             if (use_chan_manager_constructor) {
1051                 peer1.constructor.interrupt();
1052                 peer2.constructor.interrupt();
1053                 if (!use_ignore_handler) {
1054                     assert peer1.network_graph_persists >= 1;
1055                     assert peer2.network_graph_persists >= 1;
1056                 } else {
1057                     assert peer1.network_graph_persists == 0;
1058                     assert peer2.network_graph_persists == 0;
1059                 }
1060             } else if (use_nio_peer_handler) {
1061                 peer1.nio_peer_handler.interrupt();
1062                 peer2.nio_peer_handler.interrupt();
1063             }
1064             WeakReference<Peer> op1 = new WeakReference<Peer>(peer1);
1065             peer1 = new Peer(peer1);
1066             peer2 = new Peer(peer2);
1067             return new TestState(op1, peer1, peer2, b.getHash());
1068         }
1069         return new TestState(null, peer1, peer2, b.getHash());
1070     }
1071
1072     boolean cross_reload_ref_pollution = false;
1073     class TestState {
1074         private final WeakReference<Peer> ref_block;
1075         private final Peer peer1;
1076         private final Peer peer2;
1077         public Sha256Hash best_blockhash;
1078
1079         public TestState(WeakReference<Peer> ref_block, Peer peer1, Peer peer2, Sha256Hash best_blockhash) {
1080             this.ref_block = ref_block;
1081             this.peer1 = peer1;
1082             this.peer2 = peer2;
1083             this.best_blockhash = best_blockhash;
1084         }
1085     }
1086     void do_test_message_handler_b(TestState state) throws Exception {
1087         GcCheck obj = new GcCheck();
1088         if (state.ref_block != null) {
1089             // Ensure the original peers get freed before we move on. Note that we have to be in a different function
1090             // scope to do so as the (at least current OpenJDK) JRE won't release anything created in the same scope.
1091             while (!cross_reload_ref_pollution && state.ref_block.get() != null) {
1092                 System.gc();
1093                 System.runFinalization();
1094             }
1095             connect_peers(state.peer1, state.peer2);
1096         }
1097
1098         Event[] events = state.peer2.get_manager_events(1, state.peer1, state.peer2);
1099         assert events[0] instanceof Event.PendingHTLCsForwardable;
1100         state.peer2.chan_manager.process_pending_htlc_forwards();
1101
1102         events = state.peer2.get_manager_events(1, state.peer1, state.peer2);
1103         assert events[0] instanceof Event.PaymentClaimable;
1104         assert ((Event.PaymentClaimable)events[0]).purpose instanceof PaymentPurpose.InvoicePayment;
1105         assert ((PaymentPurpose.InvoicePayment) ((Event.PaymentClaimable)events[0]).purpose).payment_preimage instanceof Option_ThirtyTwoBytesZ.Some;
1106         byte[] payment_preimage = ((Option_ThirtyTwoBytesZ.Some) ((PaymentPurpose.InvoicePayment)((Event.PaymentClaimable)events[0]).purpose).payment_preimage).some;
1107         assert !Arrays.equals(payment_preimage, new byte[32]);
1108         state.peer2.chan_manager.claim_funds(payment_preimage);
1109
1110         events = state.peer2.get_manager_events(1, state.peer1, state.peer2);
1111         assert events[0] instanceof Event.PaymentClaimed;
1112         assert ((Event.PaymentClaimed)events[0]).purpose instanceof PaymentPurpose.InvoicePayment;
1113         assert ((PaymentPurpose.InvoicePayment) ((Event.PaymentClaimed)events[0]).purpose).payment_preimage instanceof  Option_ThirtyTwoBytesZ.Some;
1114         payment_preimage = ((Option_ThirtyTwoBytesZ.Some)((PaymentPurpose.InvoicePayment)((Event.PaymentClaimed)events[0]).purpose).payment_preimage).some;
1115         assert !Arrays.equals(payment_preimage, new byte[32]);
1116
1117         events = state.peer1.get_manager_events(2, state.peer1, state.peer2);
1118         assert events[0] instanceof Event.PaymentSent;
1119         assert Arrays.equals(((Event.PaymentSent) events[0]).payment_preimage, payment_preimage);
1120         assert events[1] instanceof Event.PaymentPathSuccessful;
1121         assert ((Event.PaymentPathSuccessful) events[1]).payment_hash instanceof Option_ThirtyTwoBytesZ.Some;
1122         assert Arrays.equals(((Option_ThirtyTwoBytesZ.Some) ((Event.PaymentPathSuccessful) events[1]).payment_hash).some, ((Event.PaymentSent) events[0]).payment_hash);
1123
1124         if (use_nio_peer_handler) {
1125             // We receive PaymentSent immediately upon receipt of the payment preimage, but we expect to not have an
1126             // HTLC transaction to broadcast below, which requires a bit more time to fully complete the
1127             // commitment-transaction-update dance between both peers.
1128             Thread.sleep(100);
1129         }
1130
1131         if (state.peer1.chain_monitor != null) {
1132             Balance[] peer1_balances = state.peer1.chain_monitor.get_claimable_balances(state.peer1.chan_manager.list_channels());
1133             assert peer1_balances.length == 0;
1134             Balance[] peer2_balances = state.peer2.chain_monitor.get_claimable_balances(state.peer2.chan_manager.list_channels());
1135             assert peer2_balances.length == 0;
1136         }
1137
1138         ChannelDetails[] peer1_chans = state.peer1.chan_manager.list_channels();
1139
1140         if (nice_close) {
1141             Result_NoneAPIErrorZ close_res = state.peer1.chan_manager.close_channel(peer1_chans[0].get_channel_id(), state.peer2.node_id);
1142             assert close_res instanceof Result_NoneAPIErrorZ.Result_NoneAPIErrorZ_OK;
1143             maybe_exchange_peer_messages(state.peer1, state.peer2);
1144             synchronized (state.peer1.broadcast_set) {
1145                 while (state.peer1.broadcast_set.size() != 1) state.peer1.broadcast_set.wait();
1146             }
1147             synchronized (state.peer2.broadcast_set) {
1148                 while (state.peer2.broadcast_set.size() != 1) state.peer2.broadcast_set.wait();
1149             }
1150         } else {
1151             state.peer1.chan_manager.force_close_all_channels_broadcasting_latest_txn();
1152             maybe_exchange_peer_messages(state.peer1, state.peer2);
1153             synchronized (state.peer1.broadcast_set) {
1154                 while (state.peer1.broadcast_set.size() != 1) state.peer1.broadcast_set.wait();
1155             }
1156             synchronized (state.peer2.broadcast_set) {
1157                 while (state.peer2.broadcast_set.size() != 1) state.peer2.broadcast_set.wait();
1158             }
1159         }
1160
1161         assert state.peer1.broadcast_set.size() == 1;
1162         assert state.peer2.broadcast_set.size() == 1;
1163
1164         events = state.peer2.get_manager_events(1, state.peer1, state.peer2);
1165         assert events[0] instanceof Event.ChannelClosed;
1166         events = state.peer1.get_manager_events(1, state.peer1, state.peer2);
1167         assert events[0] instanceof Event.ChannelClosed;
1168
1169         if (state.peer1.chain_monitor != null) {
1170             Balance[] peer1_balances = state.peer1.chain_monitor.get_claimable_balances(state.peer1.chan_manager.list_channels());
1171             assert peer1_balances.length == 1;
1172             for (Balance bal : peer1_balances) {
1173                 assert bal instanceof Balance.ClaimableOnChannelClose;
1174                 long expected_tx_fee = 183;
1175                 assert ((Balance.ClaimableOnChannelClose) bal).amount_satoshis == 100000 - 1 - 10000 - expected_tx_fee;
1176             }
1177             Balance[] peer2_balances = state.peer2.chain_monitor.get_claimable_balances(state.peer2.chan_manager.list_channels());
1178             assert peer2_balances.length == 1;
1179             for (Balance bal : peer2_balances) {
1180                 assert bal instanceof Balance.ClaimableOnChannelClose;
1181                 assert ((Balance.ClaimableOnChannelClose) bal).amount_satoshis == 10000 + 1;
1182             }
1183         }
1184
1185         if (!nice_close) {
1186             BitcoinNetworkParams bitcoinj_net = BitcoinNetworkParams.of(BitcoinNetwork.MAINNET);
1187             Transaction tx = new Transaction(bitcoinj_net, state.peer1.broadcast_set.getFirst());
1188             Block b = new Block(bitcoinj_net, 2, state.best_blockhash, Sha256Hash.ZERO_HASH, 42, 0, 0,
1189                     Arrays.asList(new Transaction[]{tx}));
1190             TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[] watch_outputs = state.peer2.connect_block(b, 10, 1);
1191             if (watch_outputs != null) { // We only process watch_outputs manually when we use a manually-build Watch impl
1192                 assert watch_outputs.length == 1;
1193                 assert Arrays.equals(watch_outputs[0].get_a(), tx.getTxId().getReversedBytes());
1194                 assert watch_outputs[0].get_b().length == 2;
1195                 assert watch_outputs[0].get_b()[0].get_a() == 0;
1196                 assert watch_outputs[0].get_b()[1].get_a() == 1;
1197             }
1198
1199             for (int i = 11; i < 21; i++) {
1200                 b = new Block(bitcoinj_net, 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, new ArrayList<>());
1201                 state.peer2.connect_block(b, i, 0);
1202             }
1203
1204             Event[] broadcastable_event = state.peer2.get_monitor_events(1);
1205             for (ChannelMonitor mon : state.peer2.monitors.values()) {
1206                 // This used to be buggy and double-free, so go ahead and fetch them!
1207                 byte[][] txn = mon.get_latest_holder_commitment_txn(state.peer2.logger);
1208             }
1209             assert broadcastable_event.length == 1;
1210             assert broadcastable_event[0] instanceof Event.SpendableOutputs;
1211             if (state.peer2.explicit_keys_manager != null) {
1212                 TxOut[] additional_outputs = new TxOut[]{new TxOut(420, new byte[]{0x42})};
1213                 Result_TransactionNoneZ tx_res = state.peer2.explicit_keys_manager.spend_spendable_outputs(((Event.SpendableOutputs) broadcastable_event[0]).outputs, additional_outputs, new byte[]{0x00}, 253, Option_u32Z.none());
1214                 assert tx_res instanceof Result_TransactionNoneZ.Result_TransactionNoneZ_OK;
1215                 Transaction built_tx = new Transaction(bitcoinj_net, ((Result_TransactionNoneZ.Result_TransactionNoneZ_OK) tx_res).res);
1216                 assert built_tx.getOutputs().size() == 2;
1217                 assert Arrays.equals(built_tx.getOutput(1).getScriptBytes(), new byte[]{0x00});
1218                 assert Arrays.equals(built_tx.getOutput(0).getScriptBytes(), new byte[]{0x42});
1219                 assert built_tx.getOutput(0).getValue().value == 420;
1220             }
1221
1222             while (state.peer1.peer_manager.get_peer_node_ids().length != 0 || state.peer2.peer_manager.get_peer_node_ids().length != 0) {
1223                 // LDK disconnects peers before sending an error message, so wait for disconnection.
1224                 Thread.sleep(10);
1225             }
1226
1227             connect_peers(state.peer1, state.peer2);
1228         }
1229
1230         // Test exchanging a custom message (note that ChannelManagerConstructor) always loads an IgnorimgMessageHandler
1231         // so we cannot exchange custom messages with it
1232         if (!use_chan_manager_constructor) {
1233             byte[] custom_message_bytes = new byte[]{0x42, 0x44, 0x43, 0x00};
1234             synchronized(state.peer1.custom_messages_to_send) {
1235                 state.peer1.custom_messages_to_send.add(custom_message_bytes);
1236             }
1237             state.peer1.peer_manager.process_events();
1238             synchronized (state.peer2.received_custom_messages) {
1239                 while (true) {
1240                     if (state.peer2.received_custom_messages.isEmpty()) {
1241                         state.peer2.received_custom_messages.wait();
1242                         continue;
1243                     }
1244                     assert state.peer2.received_custom_messages.size() == 1;
1245                     assert Arrays.equals(state.peer2.received_custom_messages.get(0), custom_message_bytes);
1246                     break;
1247                 }
1248             }
1249         }
1250
1251         if (use_nio_peer_handler) {
1252             state.peer1.peer_manager.disconnect_by_node_id(state.peer2.chan_manager.get_our_node_id());
1253             while (state.peer1.peer_manager.get_peer_node_ids().length != 0) Thread.yield();
1254             while (state.peer2.peer_manager.get_peer_node_ids().length != 0) Thread.yield();
1255             state.peer1.nio_peer_handler.interrupt();
1256             state.peer2.nio_peer_handler.interrupt();
1257         }
1258
1259         state.peer1.get_monitor_events(0);
1260         state.peer2.get_monitor_events(0);
1261
1262         if (use_chan_manager_constructor) {
1263             assert state.peer1.network_graph_persists == 0;
1264             assert state.peer2.network_graph_persists == 0;
1265             state.peer1.constructor.interrupt();
1266             state.peer2.constructor.interrupt();
1267             if (!use_ignore_handler) {
1268                 assert state.peer1.network_graph_persists >= 1;
1269                 assert state.peer2.network_graph_persists >= 1;
1270             } else {
1271                 assert state.peer1.network_graph_persists == 0;
1272                 assert state.peer2.network_graph_persists == 0;
1273             }
1274         }
1275
1276         t.interrupt();
1277
1278         if (state.peer1.net_graph != null)
1279             state.peer1.net_graph.write();
1280
1281         // Construct the only Option_Enum::Variant(OpaqueStruct) we have in the codebase as this used to cause double-frees:
1282         byte[] serd = new byte[] {(byte)0xd9,(byte)0x77,(byte)0xcb,(byte)0x9b,(byte)0x53,(byte)0xd9,(byte)0x3a,(byte)0x6f,(byte)0xf6,(byte)0x4b,(byte)0xb5,(byte)0xf1,(byte)0xe1,(byte)0x58,(byte)0xb4,(byte)0x09,(byte)0x4b,(byte)0x66,(byte)0xe7,(byte)0x98,(byte)0xfb,(byte)0x12,(byte)0x91,(byte)0x11,(byte)0x68,(byte)0xa3,(byte)0xcc,(byte)0xdf,(byte)0x80,(byte)0xa8,(byte)0x30,(byte)0x96,(byte)0x34,(byte)0x0a,(byte)0x6a,(byte)0x95,(byte)0xda,(byte)0x0a,(byte)0xe8,(byte)0xd9,(byte)0xf7,(byte)0x76,(byte)0x52,(byte)0x8e,(byte)0xec,(byte)0xdb,(byte)0xb7,(byte)0x47,(byte)0xeb,(byte)0x6b,(byte)0x54,(byte)0x54,(byte)0x95,(byte)0xa4,(byte)0x31,(byte)0x9e,(byte)0xd5,(byte)0x37,(byte)0x8e,(byte)0x35,(byte)0xb2,(byte)0x1e,(byte)0x07,(byte)0x3a,(byte)0x00,(byte)0x00,(byte)0x00,(byte)0x00,(byte)0x01,(byte)0x19,(byte)0xd6,(byte)0x68,(byte)0x9c,(byte)0x08,(byte)0x5a,(byte)0xe1,(byte)0x65,(byte)0x83,(byte)0x1e,(byte)0x93,(byte)0x4f,(byte)0xf7,(byte)0x63,(byte)0xae,(byte)0x46,(byte)0xa2,(byte)0xa6,(byte)0xc1,(byte)0x72,(byte)0xb3,(byte)0xf1,(byte)0xb6,(byte)0x0a,(byte)0x8c,(byte)0xe2,(byte)0x6f,(byte)0x00,(byte)0x08,(byte)0x3a,(byte)0x84,(byte)0x00,(byte)0x00,(byte)0x03,(byte)0x4d,(byte)0x01,(byte)0x34,(byte)0x13,(byte)0xa7,(byte)0x00,(byte)0x00,(byte)0x00,(byte)0x90,(byte)0x00,(byte)0x00,(byte)0x00,(byte)0x00,(byte)0x00,(byte)0x0f,(byte)0x42,(byte)0x40,(byte)0x00,(byte)0x00,(byte)0x27,(byte)0x10,(byte)0x00,(byte)0x00,(byte)0x00,(byte)0x14,(byte)0xde,(byte)0xad,(byte)0xbe,(byte)0xef,(byte)0x42,(byte)0x42,(byte)0x42,(byte)0x42};
1283         Result_ChannelUpdateDecodeErrorZ upd_msg = ChannelUpdate.read(serd);
1284         assert upd_msg instanceof Result_ChannelUpdateDecodeErrorZ.Result_ChannelUpdateDecodeErrorZ_OK;
1285         assert ((Result_ChannelUpdateDecodeErrorZ.Result_ChannelUpdateDecodeErrorZ_OK) upd_msg).res.get_contents().get_htlc_maximum_msat() == 0xdeadbeef42424242L;
1286         Option_NetworkUpdateZ upd = Option_NetworkUpdateZ.some(NetworkUpdate.channel_update_message(((Result_ChannelUpdateDecodeErrorZ.Result_ChannelUpdateDecodeErrorZ_OK) upd_msg).res));
1287
1288         if (use_chan_manager_constructor) {
1289             // Lock the scorer twice back-to-back to check that the try-with-resources AutoCloseable on the scorer works.
1290             try (ChannelManagerConstructor.ScorerWrapper score = state.peer1.constructor.get_locked_scorer()) {
1291                 score.prob_scorer.debug_log_liquidity_stats();
1292             }
1293         }
1294     }
1295
1296     java.util.LinkedList<WeakReference<Object>> must_free_objs = new java.util.LinkedList();
1297     int gc_count = 0;
1298     int gc_exp_count = 0;
1299     class GcCheck {
1300         GcCheck() { gc_exp_count += 1; }
1301         @Override
1302         protected void finalize() throws Throwable {
1303             gc_count += 1;
1304             super.finalize();
1305         }
1306     }
1307 }
1308 public class HumanObjectPeerTest {
1309     static HumanObjectPeerTestInstance do_test_run(boolean nice_close, boolean use_km_wrapper, boolean use_full_km_wrapper, boolean use_manual_watch, boolean reload_peers, boolean break_cross_peer_refs, boolean nio_peer_handler, boolean use_ignoring_routing_handler, boolean use_chan_manager_constructor, boolean use_invoice_payer) throws Exception {
1310         HumanObjectPeerTestInstance instance = new HumanObjectPeerTestInstance(nice_close, use_km_wrapper, use_full_km_wrapper, use_manual_watch, reload_peers, break_cross_peer_refs, nio_peer_handler, !nio_peer_handler, use_ignoring_routing_handler, use_chan_manager_constructor, use_invoice_payer);
1311         HumanObjectPeerTestInstance.TestState state = instance.do_test_message_handler();
1312         instance.do_test_message_handler_b(state);
1313         return instance;
1314     }
1315     static void do_test(boolean nice_close, boolean use_km_wrapper, boolean use_full_km_wrapper, boolean use_manual_watch, boolean reload_peers, boolean break_cross_peer_refs, boolean nio_peer_handler, boolean use_ignoring_routing_handler, boolean use_chan_manager_constructor, boolean use_invoice_payer) throws Exception {
1316         HumanObjectPeerTestInstance instance = do_test_run(nice_close, use_km_wrapper, use_full_km_wrapper, use_manual_watch, reload_peers, break_cross_peer_refs, nio_peer_handler, use_ignoring_routing_handler, use_chan_manager_constructor, use_invoice_payer);
1317         while (instance.gc_count != instance.gc_exp_count) {
1318             System.gc();
1319             System.runFinalization();
1320         }
1321         for (WeakReference<Object> o : instance.must_free_objs)
1322             assert o.get() == null;
1323     }
1324     public static final int TEST_ITERATIONS = (1 << 10);
1325     public static void do_test_message_handler(IntConsumer statusFunction) throws Exception {
1326         Thread gc_thread = new Thread(() -> {
1327             while (true) {
1328                 System.gc();
1329                 System.runFinalization();
1330                 try { Thread.sleep(0, 1); } catch (InterruptedException e) { break; }
1331             }
1332         }, "Test GC Thread");
1333         gc_thread.start();
1334         for (int i = 0; i < TEST_ITERATIONS; i++) {
1335             boolean nice_close =                   (i & (1 << 0)) != 0;
1336             boolean use_km_wrapper =               (i & (1 << 1)) != 0;
1337             boolean use_full_km_wrapper =          (i & (1 << 2)) != 0;
1338             boolean use_manual_watch =             (i & (1 << 3)) != 0;
1339             boolean reload_peers =                 (i & (1 << 4)) != 0;
1340             boolean break_cross_refs =             (i & (1 << 5)) != 0;
1341             boolean use_ignoring_routing_handler = (i & (1 << 6)) != 0;
1342             boolean use_chan_manager_constructor = (i & (1 << 7)) != 0;
1343             boolean use_invoice_payer =            (i & (1 << 8)) != 0;
1344             boolean nio_peer_handler =             (i & (1 << 9)) != 0;
1345             if (break_cross_refs && !reload_peers) {
1346                 // There are no cross refs to break without reloading peers.
1347                 continue;
1348             }
1349             if (use_chan_manager_constructor && (use_manual_watch || !nio_peer_handler)) {
1350                 // ChannelManagerConstructor requires a ChainMonitor as the Watch and creates a NioPeerHandler for us.
1351                 continue;
1352             }
1353             if (!use_chan_manager_constructor && (use_ignoring_routing_handler)) {
1354                 // We rely on the ChannelManagerConstructor to convert null into an IgnoringMessageHandler, so don't
1355                 // try to run with an IgnoringMessageHandler unless we're also using a ChannelManagerConstructor.
1356                 continue;
1357             }
1358             if (use_chan_manager_constructor && use_ignoring_routing_handler && use_invoice_payer) {
1359                 // As documented on ChannelManagerConstructor, if we provide a `null` NetworkGraph (because we want to
1360                 // use an IgnoringMessageHandler), no InvoicePayer will be constructed for us, thus we cannot use an
1361                 // InvoicePayer to send payments in this case.
1362                 continue;
1363             }
1364             if (use_chan_manager_constructor && use_km_wrapper) {
1365                 // ChannelManagerConstructor requires a full KeysManager, so using wrapped keys interfaces doesn't make
1366                 // any sense.
1367                 continue;
1368             }
1369             if (use_full_km_wrapper && !use_km_wrapper) {
1370                 // Gotta use some KM wrapper if we're gonna use a full one.
1371                 continue;
1372             }
1373             statusFunction.accept(i);
1374             do_test(nice_close, use_km_wrapper, use_full_km_wrapper, use_manual_watch, reload_peers, break_cross_refs, nio_peer_handler, use_ignoring_routing_handler, use_chan_manager_constructor, use_invoice_payer);
1375         }
1376         gc_thread.interrupt();
1377         gc_thread.join();
1378     }
1379     @Test
1380     public void test_message_handler() throws Exception {
1381         do_test_message_handler(i -> System.err.println("Running test with flags " + i));
1382     }
1383
1384     // This is used in the test jar to test the built jar is runnable
1385     public static void main(String[] args) {
1386         try {
1387             do_test_message_handler(i -> System.err.println("Running test with flags " + i));
1388         } catch (Exception e) {
1389             System.err.println("Caught exception:");
1390             System.err.println(e);
1391             System.exit(1);
1392         }
1393     }
1394 }