_ 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.IOException;
  19 import java.lang.ref.WeakReference;
  20 import java.net.InetSocketAddress;
  21 import java.util.*;
  22 import java.util.function.IntConsumer;
  23
  24 class HumanObjectPeerTestInstance {
  25     private final boolean nice_close;
  26     private final boolean use_km_wrapper;
  27     private final boolean use_manual_watch;
  28     private final boolean reload_peers;
  29     private final boolean break_cross_peer_refs;
  30     private final boolean use_nio_peer_handler;
  31     private final boolean use_filter;
  32     private final boolean use_ignore_handler;
  33     private final boolean use_chan_manager_constructor;
  34     private final boolean use_invoice_payer;
  35     TxOut gossip_txout = null;
  36
  37     HumanObjectPeerTestInstance(boolean nice_close, boolean use_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) {
  38         this.nice_close = nice_close;
  39         this.use_km_wrapper = use_km_wrapper;
  40         this.use_manual_watch = use_manual_watch;
  41         this.reload_peers = reload_peers;
  42         this.break_cross_peer_refs = break_cross_peer_refs;
  43         this.use_nio_peer_handler = use_nio_peer_handler;
  44         this.use_filter = use_filter;
  45         this.use_ignore_handler = use_ignore_handler;
  46         this.use_chan_manager_constructor = use_chan_manager_constructor;
  47         this.use_invoice_payer = use_invoice_payer;
  48     }
  49
  50     class Peer {
  51         NodeSigner manual_node_signer(KeysManager underlying_km) {
  52             NodeSigner underlying_ns = underlying_km.as_NodeSigner();
  53             must_free_objs.add(new WeakReference<>(underlying_ns));
  54             return NodeSigner.new_impl(new NodeSigner.NodeSignerInterface() {
  55                 @Override public byte[] get_inbound_payment_key_material() { return underlying_ns.get_inbound_payment_key_material(); }
  56                 @Override public Result_PublicKeyNoneZ get_node_id(Recipient recipient) { return underlying_ns.get_node_id(recipient); }
  57                 @Override public Result_SharedSecretNoneZ ecdh(Recipient recipient, byte[] other_key, Option_ScalarZ tweak) {
  58                     return underlying_ns.ecdh(recipient, other_key, tweak);
  59                 }
  60                 @Override public Result_RecoverableSignatureNoneZ sign_invoice(byte[] hrp_bytes, UInt5[] invoice_data, Recipient recipient) {
  61                     return underlying_ns.sign_invoice(hrp_bytes, invoice_data, recipient);
  62                 }
  63                 @Override public Result_SignatureNoneZ sign_gossip_message(UnsignedGossipMessage msg) {
  64                     return underlying_ns.sign_gossip_message(msg);
  65                 }
  66             });
  67         }
  68         SignerProvider manual_signer_provider(KeysManager underlying_km) {
  69             SignerProvider underlying_sp = underlying_km.as_SignerProvider();
  70             must_free_objs.add(new WeakReference<>(underlying_sp));
  71             return SignerProvider.new_impl(new SignerProvider.SignerProviderInterface() {
  72                 @Override public byte[] get_destination_script() { return underlying_sp.get_destination_script(); }
  73                 @Override public ShutdownScript get_shutdown_scriptpubkey() { return underlying_sp.get_shutdown_scriptpubkey(); }
  74                 @Override public byte[] generate_channel_keys_id(boolean inbound, long channel_value_satoshis, UInt128 user_channel_id) {
  75                     return underlying_sp.generate_channel_keys_id(inbound, channel_value_satoshis, user_channel_id);
  76                 }
  77                 @Override
  78                 public WriteableEcdsaChannelSigner derive_channel_signer(long channel_value_satoshis, byte[] channel_keys_id) {
  79                     WriteableEcdsaChannelSigner underlying_wecs = underlying_sp.derive_channel_signer(channel_value_satoshis, channel_keys_id);
  80                     EcdsaChannelSigner underlying_ecs = underlying_wecs.get_ecdsa_channel_signer();
  81                     ChannelSigner underlying_cs = underlying_ecs.get_channel_signer();
  82                     ChannelSigner.ChannelSignerInterface csi = new ChannelSigner.ChannelSignerInterface() {
  83                         @Override public byte[] get_per_commitment_point(long idx) { return underlying_cs.get_per_commitment_point(idx); }
  84                         @Override public byte[] release_commitment_secret(long idx) { return underlying_cs.release_commitment_secret(idx); }
  85                         @Override public Result_NoneNoneZ validate_holder_commitment(HolderCommitmentTransaction holder_tx, byte[][] preimages) {
  86                             return underlying_cs.validate_holder_commitment(holder_tx, preimages);
  87                         }
  88                         @Override public byte[] channel_keys_id() { return underlying_cs.channel_keys_id(); }
  89                         @Override public void provide_channel_parameters(ChannelTransactionParameters channel_parameters) {
  90                             underlying_cs.provide_channel_parameters(channel_parameters);
  91                         }
  92                     };
  93                     EcdsaChannelSigner.EcdsaChannelSignerInterface ecsi = new EcdsaChannelSigner.EcdsaChannelSignerInterface() {
  94                         @Override public Result_C2Tuple_SignatureCVec_SignatureZZNoneZ sign_counterparty_commitment(CommitmentTransaction commitment_tx, byte[][] preimages) {
  95                             return underlying_ecs.sign_counterparty_commitment(commitment_tx, preimages);
  96                         }
  97                         @Override public Result_NoneNoneZ validate_counterparty_revocation(long idx, byte[] secret) {
  98                             return underlying_ecs.validate_counterparty_revocation(idx, secret);
  99                         }
 100                         @Override public Result_C2Tuple_SignatureCVec_SignatureZZNoneZ sign_holder_commitment_and_htlcs(HolderCommitmentTransaction commitment_tx) {
 101                             return underlying_ecs.sign_holder_commitment_and_htlcs(commitment_tx);
 102                         }
 103                         @Override public Result_SignatureNoneZ sign_justice_revoked_output(byte[] justice_tx, long input, long amount, byte[] per_commitment_key) {
 104                             return underlying_ecs.sign_justice_revoked_output(justice_tx, input, amount, per_commitment_key);
 105                         }
 106                         @Override public Result_SignatureNoneZ sign_justice_revoked_htlc(byte[] justice_tx, long input, long amount, byte[] per_commitment_key, HTLCOutputInCommitment htlc) {
 107                             return underlying_ecs.sign_justice_revoked_htlc(justice_tx, input, amount, per_commitment_key, htlc);
 108                         }
 109                         @Override public Result_SignatureNoneZ sign_counterparty_htlc_transaction(byte[] htlc_tx, long input, long amount, byte[] per_commitment_point, HTLCOutputInCommitment htlc) {
 110                             return underlying_ecs.sign_counterparty_htlc_transaction(htlc_tx, input, amount, per_commitment_point, htlc);
 111                         }
 112                         @Override public Result_SignatureNoneZ sign_closing_transaction(ClosingTransaction closing_tx) {
 113                             return underlying_ecs.sign_closing_transaction(closing_tx);
 114                         }
 115                         @Override public Result_SignatureNoneZ sign_holder_anchor_input(byte[] anchor_tx, long input) {
 116                             return underlying_ecs.sign_holder_anchor_input(anchor_tx, input);
 117                         }
 118                         @Override public Result_SignatureNoneZ sign_channel_announcement_with_funding_key(UnsignedChannelAnnouncement msg) {
 119                             return underlying_ecs.sign_channel_announcement_with_funding_key(msg);
 120                         }
 121                     };
 122                     WriteableEcdsaChannelSigner.WriteableEcdsaChannelSignerInterface wecsi = new WriteableEcdsaChannelSigner.WriteableEcdsaChannelSignerInterface() {
 123                         @Override public byte[] write() { return underlying_wecs.write(); }
 124                     };
 125                     WriteableEcdsaChannelSigner resp = WriteableEcdsaChannelSigner.new_impl(wecsi, ecsi, csi, underlying_cs.get_pubkeys());
 126                     must_free_objs.add(new WeakReference<>(wecsi));
 127                     must_free_objs.add(new WeakReference<>(ecsi));
 128                     must_free_objs.add(new WeakReference<>(csi));
 129                     must_free_objs.add(new WeakReference<>(resp));
 130                     must_free_objs.add(new WeakReference<>(underlying_wecs));
 131                     must_free_objs.add(new WeakReference<>(underlying_ecs));
 132                     must_free_objs.add(new WeakReference<>(underlying_cs));
 133                     return resp;
 134                 }
 135
 136                 @Override
 137                 public Result_WriteableEcdsaChannelSignerDecodeErrorZ read_chan_signer(byte[] reader) {
 138                     return underlying_sp.read_chan_signer(reader);
 139                 }
 140             });
 141         }
 142
 143         Watch get_manual_watch() {
 144             Watch.WatchInterface watch_impl = new Watch.WatchInterface() {
 145                 public ChannelMonitorUpdateStatus watch_channel(OutPoint funding_txo, ChannelMonitor monitor) {
 146                     synchronized (monitors) {
 147                         assert monitors.put(Arrays.toString(funding_txo.get_txid()), monitor) == null;
 148                     }
 149                     return ChannelMonitorUpdateStatus.LDKChannelMonitorUpdateStatus_Completed;
 150                 }
 151
 152                 public ChannelMonitorUpdateStatus update_channel(OutPoint funding_txo, ChannelMonitorUpdate update) {
 153                     synchronized (monitors) {
 154                         String txid = Arrays.toString(funding_txo.get_txid());
 155                         assert monitors.containsKey(txid);
 156                         Result_NoneNoneZ update_res = monitors.get(txid).update_monitor(update, tx_broadcaster, fee_estimator, logger);
 157                         assert update_res instanceof Result_NoneNoneZ.Result_NoneNoneZ_OK;
 158                     }
 159                     return ChannelMonitorUpdateStatus.LDKChannelMonitorUpdateStatus_Completed;
 160                 }
 161
 162                 @Override
 163                 public ThreeTuple_OutPointCVec_MonitorEventZPublicKeyZ[] release_pending_monitor_events() {
 164                     synchronized (monitors) {
 165                         assert monitors.size() <= 1;
 166                         for (ChannelMonitor mon : monitors.values()) {
 167                             ThreeTuple_OutPointCVec_MonitorEventZPublicKeyZ[] res = new ThreeTuple_OutPointCVec_MonitorEventZPublicKeyZ[1];
 168                             res[0] = ThreeTuple_OutPointCVec_MonitorEventZPublicKeyZ.of(mon.get_funding_txo().get_a(), mon.get_and_clear_pending_monitor_events(), mon.get_counterparty_node_id());
 169                             return res;
 170                         }
 171                     }
 172                     return new ThreeTuple_OutPointCVec_MonitorEventZPublicKeyZ[0];
 173                 }
 174             };
 175             Watch watch = Watch.new_impl(watch_impl);
 176             must_free_objs.add(new WeakReference<>(watch_impl));
 177             must_free_objs.add(new WeakReference<>(watch));
 178             return watch;
 179         }
 180
 181         UserConfig get_config() {
 182             ChannelHandshakeConfig channel_config = ChannelHandshakeConfig.with_default();
 183             channel_config.set_announced_channel(true);
 184             UserConfig config = UserConfig.with_default();
 185             config.set_channel_handshake_config(channel_config);
 186             return config;
 187         }
 188
 189         NioPeerHandler nio_peer_handler;
 190         short nio_port;
 191         final byte seed;
 192         final Logger logger;
 193         final FeeEstimator fee_estimator;
 194         final BroadcasterInterface tx_broadcaster;
 195         final KeysManager explicit_keys_manager;
 196         final NodeSigner node_signer;
 197         final SignerProvider signer_provider;
 198         final EntropySource entropy_source;
 199         final ChainMonitor chain_monitor;
 200         NetworkGraph net_graph;
 201         P2PGossipSync route_handler;
 202         final Watch chain_watch;
 203         final HashSet<String> filter_additions;
 204         Option_FilterZ filter;
 205         ChannelManager chan_manager;
 206         PeerManager peer_manager;
 207         final HashMap<String, ChannelMonitor> monitors; // Wow I forgot just how terrible Java is - we can't put a byte array here.
 208         byte[] node_id;
 209         byte[] connected_peer_node_id = null;
 210         final LinkedList<byte[]> broadcast_set = new LinkedList<>();
 211         final LinkedList<Event> pending_manager_events = new LinkedList<>();
 212         private final CustomMessageHandler custom_message_handler;
 213         final LinkedList<byte[]> received_custom_messages = new LinkedList<>();
 214         final LinkedList<byte[]> custom_messages_to_send = new LinkedList<>();
 215         ChannelManagerConstructor constructor = null;
 216         GcCheck obj = new GcCheck();
 217
 218         private ChannelMonitor test_mon_roundtrip(OutPoint expected_id, byte[] data) {
 219             // Because get_funding_txo() returns an OutPoint in a tuple that is a reference to an OutPoint inside the
 220             // ChannelMonitor, its a good test to ensure that the OutPoint isn't freed (or is cloned) before the
 221             // ChannelMonitor is. This used to be broken.
 222             Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ roundtrip_monitor = UtilMethods.C2Tuple_BlockHashChannelMonitorZ_read(data, this.entropy_source, this.signer_provider);
 223             assert roundtrip_monitor instanceof Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK;
 224             must_free_objs.add(new WeakReference<>(roundtrip_monitor));
 225             TwoTuple_OutPointScriptZ funding_txo = ((Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK) roundtrip_monitor).res.get_b().get_funding_txo();
 226             must_free_objs.add(new WeakReference<>(funding_txo));
 227             System.gc(); System.runFinalization(); // Give the GC a chance to run.
 228             assert Arrays.equals(funding_txo.get_a().get_txid(), expected_id.get_txid());
 229             assert funding_txo.get_a().get_index() == expected_id.get_index();
 230             Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ roundtrip_two = UtilMethods.C2Tuple_BlockHashChannelMonitorZ_read(data, this.entropy_source, this.signer_provider);
 231             assert roundtrip_two instanceof Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK;
 232             must_free_objs.add(new WeakReference<>(((Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK) roundtrip_two).res.get_b()));
 233             must_free_objs.add(new WeakReference<>(((Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK) roundtrip_two).res));
 234             must_free_objs.add(new WeakReference<>(roundtrip_two));
 235             return ((Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK) roundtrip_two).res.get_b();
 236         }
 237
 238         private Peer(Object _dummy, byte seed) {
 239             logger = Logger.new_impl((org.ldk.structs.Record arg)->{
 240                 if (arg.get_level() == Level.LDKLevel_Error)
 241                     System.err.println(seed + ": " + arg.get_module_path() + " - " + arg.get_args());
 242                 else
 243                     System.out.println(seed + ": " + arg.get_module_path() + " - " + arg.get_args());
 244             });
 245             fee_estimator = FeeEstimator.new_impl((confirmation_target -> 253));
 246             tx_broadcaster = BroadcasterInterface.new_impl(tx -> {
 247                 synchronized (broadcast_set) {
 248                     broadcast_set.add(tx);
 249                     broadcast_set.notifyAll();
 250                 }
 251             });
 252             monitors = new HashMap<>();
 253             this.seed = seed;
 254             Persist persister = Persist.new_impl(new Persist.PersistInterface() {
 255                 @Override
 256                 public ChannelMonitorUpdateStatus persist_new_channel(OutPoint id, ChannelMonitor data, MonitorUpdateId update_id) {
 257                     synchronized (monitors) {
 258                         String key = Arrays.toString(id.to_channel_id());
 259                         ChannelMonitor res = test_mon_roundtrip(id, data.write());
 260                         assert monitors.put(key, res) == null;
 261                     }
 262                     return ChannelMonitorUpdateStatus.LDKChannelMonitorUpdateStatus_Completed;
 263                 }
 264
 265                 @Override
 266                 public ChannelMonitorUpdateStatus update_persisted_channel(OutPoint id, ChannelMonitorUpdate update, ChannelMonitor data, MonitorUpdateId update_id) {
 267                     synchronized (monitors) {
 268                         String key = Arrays.toString(id.to_channel_id());
 269                         ChannelMonitor res = test_mon_roundtrip(id, data.write());
 270                         // Note that we use a serialization-roundtrip copy of data here, not the original, as this can
 271                         // expose the JVM JIT bug where it finalize()s things still being called.
 272                         assert monitors.put(key, res) != null;
 273                     }
 274                     return ChannelMonitorUpdateStatus.LDKChannelMonitorUpdateStatus_Completed;
 275                 }
 276             });
 277
 278             filter_additions = new HashSet<>();
 279             if (use_filter) {
 280                 this.filter = Option_FilterZ.some(Filter.new_impl(new Filter.FilterInterface() {
 281                     @Override public void register_tx(byte[] txid, byte[] script_pubkey) {
 282                         filter_additions.add(Arrays.toString(txid));
 283                     }
 284                     @Override public void register_output(WatchedOutput output) {
 285                         filter_additions.add(Arrays.toString(output.get_outpoint().get_txid()) + ":" + output.get_outpoint().get_index());
 286                     }
 287                 }));
 288             } else {
 289                 this.filter = Option_FilterZ.none();
 290             }
 291
 292             if (use_manual_watch) {
 293                 chain_watch = get_manual_watch();
 294                 chain_monitor = null;
 295             } else {
 296                 chain_monitor = ChainMonitor.of(filter, tx_broadcaster, logger, fee_estimator, persister);
 297                 chain_watch = chain_monitor.as_Watch();
 298             }
 299
 300             byte[] key_seed = new byte[32];
 301             for (byte i = 0; i < 32; i++) {
 302                 key_seed[i] = (byte) (i ^ seed);
 303             }
 304             KeysManager keys = KeysManager.of(key_seed, System.currentTimeMillis() / 1000, (int) (System.currentTimeMillis() * 1000));
 305             if (use_km_wrapper) {
 306                 this.signer_provider = manual_signer_provider(keys);
 307                 this.node_signer = manual_node_signer(keys);
 308                 this.entropy_source = EntropySource.new_impl(new EntropySource.EntropySourceInterface() {
 309                     @Override public byte[] get_secure_random_bytes() { return keys.as_EntropySource().get_secure_random_bytes(); }
 310                 });
 311                 this.explicit_keys_manager = null;
 312             } else {
 313                 this.signer_provider = keys.as_SignerProvider();
 314                 this.entropy_source = keys.as_EntropySource();
 315                 this.node_signer = keys.as_NodeSigner();
 316                 this.explicit_keys_manager = keys;
 317             }
 318
 319             this.custom_message_handler = CustomMessageHandler.new_impl(new CustomMessageHandler.CustomMessageHandlerInterface() {
 320                 @Override
 321                 public Result_NoneLightningErrorZ handle_custom_message(Type msg, byte[] sender_node_id) {
 322                     synchronized (received_custom_messages) {
 323                         received_custom_messages.add(msg.write());
 324                         received_custom_messages.notifyAll();
 325                     }
 326                     return Result_NoneLightningErrorZ.ok();
 327                 }
 328
 329                 @Override
 330                 public TwoTuple_PublicKeyTypeZ[] get_and_clear_pending_msg() {
 331                     byte[][] bytes;
 332                     synchronized (custom_messages_to_send) {
 333                         bytes = custom_messages_to_send.toArray(new byte[0][0]);
 334                         custom_messages_to_send.clear();
 335                     }
 336                     TwoTuple_PublicKeyTypeZ[] ret = new TwoTuple_PublicKeyTypeZ[bytes.length];
 337                     for (int i = 0; i < bytes.length; i++) {
 338                         final int msg_idx = i;
 339                         ret[i] = TwoTuple_PublicKeyTypeZ.of(connected_peer_node_id, Type.new_impl(new Type.TypeInterface() {
 340                             @Override public short type_id() { return 4096; }
 341                             @Override public String debug_str() { return "Custom Java Message"; }
 342                             @Override public byte[] write() { return bytes[msg_idx]; }
 343                         }));
 344                     }
 345                     return ret;
 346                 }
 347             }, (message_type, buffer) -> {
 348                 assert message_type == 4096;
 349                 return Result_COption_TypeZDecodeErrorZ.ok(Option_TypeZ.some(Type.new_impl(new Type.TypeInterface() {
 350                     @Override public short type_id() { return 4096; }
 351                     @Override public String debug_str() { return "Custom Java-Decoded Message"; }
 352                     @Override public byte[] write() { return buffer; }
 353                 })));
 354             });
 355         }
 356         private void bind_nio() {
 357             if (!use_nio_peer_handler) return;
 358             if (use_chan_manager_constructor) {
 359                 this.nio_peer_handler = this.constructor.nio_peer_handler;
 360             } else {
 361                 try { this.nio_peer_handler = new NioPeerHandler(peer_manager); } catch (IOException e) { assert false; }
 362             }
 363             for (short i = 10_000; true; i++) {
 364                 try {
 365                     nio_peer_handler.bind_listener(new InetSocketAddress("127.0.0.1", i));
 366                     nio_port = i;
 367                     break;
 368                 } catch (IOException e) { assert i < 10_500; }
 369             }
 370         }
 371         private void setup_route_handler() {
 372             this.route_handler = P2PGossipSync.of(this.net_graph,
 373                 Option_UtxoLookupZ.some(UtxoLookup.new_impl((genesis_hash, short_channel_id) -> UtxoResult.sync(Result_TxOutUtxoLookupErrorZ.ok(gossip_txout)))), this.logger);
 374         }
 375         Peer(byte seed) {
 376             this(null, seed);
 377             this.net_graph = NetworkGraph.of(Network.LDKNetwork_Bitcoin, this.logger);
 378             this.setup_route_handler();
 379
 380             if (use_chan_manager_constructor) {
 381                 this.constructor = new ChannelManagerConstructor(Network.LDKNetwork_Bitcoin, get_config(), new byte[32], 0,
 382                         this.explicit_keys_manager, this.fee_estimator, this.chain_monitor, this.net_graph,
 383                         ProbabilisticScoringParameters.with_default(), (ChannelManagerConstructor.RouterWrapper)
 384                             (payer_node_id, route_params, first_hops, inflight_htlcs, payment_hash, payment_id, default_router) -> {
 385                                 assert payment_hash != null && payment_id != null;
 386                                 Router r = default_router.as_Router();
 387                                 must_free_objs.add(new WeakReference<>(r));
 388                                 return r.find_route_with_id(payer_node_id, route_params, first_hops, inflight_htlcs, payment_hash, payment_id);
 389                             },
 390                         this.tx_broadcaster, this.logger);
 391                 constructor.chain_sync_completed(new ChannelManagerConstructor.EventHandler() {
 392                     @Override public void handle_event(Event event) {
 393                         synchronized (pending_manager_events) {
 394                             pending_manager_events.add(event);
 395                             pending_manager_events.notifyAll();
 396                         }
 397                     }
 398                     @Override public void persist_manager(byte[] channel_manager_bytes) { assert channel_manager_bytes.length > 1; }
 399                     @Override public void persist_network_graph(byte[] graph_bytes) { assert graph_bytes.length > 1; }
 400                     @Override public void persist_scorer(byte[] scorer_bytes) { assert scorer_bytes.length > 1; }
 401                 }, !use_ignore_handler);
 402                 this.chan_manager = constructor.channel_manager;
 403                 this.peer_manager = constructor.peer_manager;
 404                 must_free_objs.add(new WeakReference<>(this.chan_manager));
 405             } else {
 406                 Router router = Router.new_impl(new Router.RouterInterface() {
 407                     @Override
 408                     public Result_RouteLightningErrorZ find_route_with_id(byte[] payer, RouteParameters route_params, ChannelDetails[] first_hops, InFlightHtlcs inflight_htlcs, byte[] _payment_hash, byte[] _payment_id) {
 409                         return find_route(payer, route_params, first_hops, inflight_htlcs);
 410                     }
 411
 412                     @Override
 413                     public Result_RouteLightningErrorZ find_route(byte[] payer, RouteParameters params, ChannelDetails[] first_hops, InFlightHtlcs inflight_htlcs) {
 414                         while (true) {
 415                             try (ReadOnlyNetworkGraph graph = net_graph.read_only()) {
 416                                 assert graph.channel(424242) == null;
 417                                 long[] channels = graph.list_channels();
 418                                 if (channels.length != 1) {
 419                                     // If we're using a NioPeerHandler, the handling of announcement signatures and
 420                                     // channel broadcasting may be done async, so just wait until the channel shows up.
 421                                     assert use_nio_peer_handler;
 422                                     continue;
 423                                 }
 424                                 ChannelInfo chan = graph.channel(channels[0]);
 425                                 assert Arrays.equals(chan.get_node_one().as_slice(), chan.get_node_one().write());
 426                                 assert Arrays.equals(chan.get_node_one().as_slice(), chan_manager.get_our_node_id()) ||
 427                                         Arrays.equals(chan.get_node_two().as_slice(), chan_manager.get_our_node_id());
 428                                 break;
 429                             }
 430                         }
 431                         return UtilMethods.find_route(payer, params, net_graph, first_hops, logger, Score.new_impl(new Score.ScoreInterface() {
 432                             @Override public void payment_path_failed(Path path, long scid) {}
 433                             @Override public long channel_penalty_msat(long short_channel_id, NodeId source, NodeId target, ChannelUsage usage) { return 0; }
 434                             @Override public void payment_path_successful(Path path) {}
 435                             @Override public void probe_failed(Path path, long short_channel_id) { assert false; }
 436                             @Override public void probe_successful(Path path) { assert false; }
 437                             @Override public byte[] write() { assert false; return null; }
 438                         }), new byte[32]);
 439                     }
 440                 });
 441                 ChainParameters params = ChainParameters.of(Network.LDKNetwork_Bitcoin, BestBlock.of(new byte[32], 0));
 442                 this.chan_manager = ChannelManager.of(this.fee_estimator, chain_watch, tx_broadcaster, router, logger,
 443                     this.entropy_source, this.node_signer, this.signer_provider, get_config(), params);
 444                 this.peer_manager = PeerManager.of(chan_manager.as_ChannelMessageHandler(), route_handler.as_RoutingMessageHandler(),
 445                         IgnoringMessageHandler.of().as_OnionMessageHandler(), 0xdeadbeef,
 446                         this.entropy_source.get_secure_random_bytes(), logger, this.custom_message_handler, this.node_signer);
 447            }
 448
 449             this.node_id = chan_manager.get_our_node_id();
 450             this.filter = null;
 451             bind_nio();
 452             System.gc();
 453         }
 454
 455         Object ptr_to;
 456         Peer(Peer orig) {
 457             this(null, orig.seed);
 458             if (use_chan_manager_constructor) {
 459                 byte[][] monitors = {orig.monitors.values().stream().iterator().next().write()};
 460                 byte[] serialized = orig.chan_manager.write();
 461                 byte[] serialized_graph = orig.net_graph.write();
 462                 byte[] serialized_scorer = orig.constructor.scorer.write();
 463                 try {
 464                     Filter filter_nullable = null;
 465                     if (this.filter instanceof Option_FilterZ.Some) {
 466                         filter_nullable = ((Option_FilterZ.Some) this.filter).some;
 467                     }
 468                     this.constructor = new ChannelManagerConstructor(serialized, monitors, get_config(),
 469                             this.explicit_keys_manager, this.fee_estimator, this.chain_monitor, filter_nullable,
 470                             serialized_graph, ProbabilisticScoringParameters.with_default(), serialized_scorer, null,
 471                             this.tx_broadcaster, this.logger);
 472                     try {
 473                         // Test that ChannelManagerConstructor correctly rejects duplicate ChannelMonitors
 474                         byte[][] monitors_dupd = new byte[2][];
 475                         monitors_dupd[0] = monitors[0];
 476                         monitors_dupd[1] = monitors[0];
 477                         ChannelManagerConstructor constr = new ChannelManagerConstructor(serialized, monitors_dupd, get_config(),
 478                                 this.explicit_keys_manager, this.fee_estimator, this.chain_monitor, filter_nullable,
 479                                 serialized_graph, ProbabilisticScoringParameters.with_default(), serialized_scorer, null,
 480                                 this.tx_broadcaster, this.logger);
 481                         assert false;
 482                     } catch (ChannelManagerConstructor.InvalidSerializedDataException e) {}
 483                     this.net_graph = this.constructor.net_graph;
 484                     setup_route_handler();
 485                     constructor.chain_sync_completed(new ChannelManagerConstructor.EventHandler() {
 486                         @Override public void handle_event(Event event) {
 487                             synchronized (pending_manager_events) {
 488                                 pending_manager_events.add(event);
 489                                 pending_manager_events.notifyAll();
 490                             }
 491                         }
 492                         @Override public void persist_manager(byte[] channel_manager_bytes) { assert channel_manager_bytes.length > 1; }
 493                         @Override public void persist_network_graph(byte[] graph_bytes) { assert graph_bytes.length > 1; }
 494                         @Override public void persist_scorer(byte[] scorer_bytes) { assert scorer_bytes.length > 1; }
 495                     }, !use_ignore_handler);
 496                     this.chan_manager = constructor.channel_manager;
 497                     this.peer_manager = constructor.peer_manager;
 498                     must_free_objs.add(new WeakReference<>(this.chan_manager));
 499                     // If we are using a ChannelManagerConstructor, we may have pending events waiting on the old peer
 500                     // which have been removed from the ChannelManager but which we still need to handle.
 501                     this.pending_manager_events.addAll(orig.pending_manager_events);
 502                     if (!this.pending_manager_events.isEmpty()) {
 503                         // However, this implies cross_reload_ref_pollution
 504                         cross_reload_ref_pollution = true;
 505                     }
 506                 } catch (ChannelManagerConstructor.InvalidSerializedDataException e) {
 507                     assert false;
 508                 }
 509             } else {
 510                 this.net_graph = NetworkGraph.of(Network.LDKNetwork_Bitcoin, this.logger);
 511                 Router router = Router.new_impl(new Router.RouterInterface() {
 512                     @Override
 513                     public Result_RouteLightningErrorZ find_route_with_id(byte[] payer, RouteParameters route_params, ChannelDetails[] first_hops, InFlightHtlcs inflight_htlcs, byte[] _payment_hash, byte[] _payment_id) {
 514                         return find_route(payer, route_params, first_hops, inflight_htlcs);
 515                     }
 516
 517                     @Override
 518                     public Result_RouteLightningErrorZ find_route(byte[] payer, RouteParameters params, ChannelDetails[] first_hops, InFlightHtlcs inflight_htlcs) {
 519                         while (true) {
 520                             try (ReadOnlyNetworkGraph graph = net_graph.read_only()) {
 521                                 assert graph.channel(424242) == null;
 522                                 long[] channels = graph.list_channels();
 523                                 if (channels.length != 1) {
 524                                     // If we're using a NioPeerHandler, the handling of announcement signatures and
 525                                     // channel broadcasting may be done async, so just wait until the channel shows up.
 526                                     assert use_nio_peer_handler;
 527                                     continue;
 528                                 }
 529                                 ChannelInfo chan = graph.channel(channels[0]);
 530                                 assert Arrays.equals(chan.get_node_one().as_slice(), chan.get_node_one().write());
 531                                 assert Arrays.equals(chan.get_node_one().as_slice(), chan_manager.get_our_node_id()) ||
 532                                         Arrays.equals(chan.get_node_two().as_slice(), chan_manager.get_our_node_id());
 533                                 break;
 534                             }
 535                         }
 536                         return UtilMethods.find_route(payer, params, net_graph, first_hops, logger, Score.new_impl(new Score.ScoreInterface() {
 537                             @Override public void payment_path_failed(Path path, long scid) {}
 538                             @Override public long channel_penalty_msat(long short_channel_id, NodeId source, NodeId target, ChannelUsage usage) { return 0; }
 539                             @Override public void payment_path_successful(Path path) {}
 540                             @Override public void probe_failed(Path path, long short_channel_id) { assert false; }
 541                             @Override public void probe_successful(Path path) { assert false; }
 542                             @Override public byte[] write() { assert false; return null; }
 543                         }), new byte[32]);
 544                     }
 545                 });
 546                 this.setup_route_handler();
 547                 ChannelMonitor[] monitors = new ChannelMonitor[1];
 548                 assert orig.monitors.size() == 1;
 549                 if (!break_cross_peer_refs) {
 550                     monitors[0] = orig.monitors.values().stream().iterator().next();
 551                 } else {
 552                     byte[] serialized = orig.monitors.values().stream().iterator().next().write();
 553                     Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ res =
 554                             UtilMethods.C2Tuple_BlockHashChannelMonitorZ_read(serialized, this.entropy_source, this.signer_provider);
 555                     assert res instanceof Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK;
 556                     monitors[0] = ((Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK) res).res.get_b();
 557                 }
 558                 byte[] serialized = orig.chan_manager.write();
 559                 Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ read_res =
 560                         UtilMethods.C2Tuple_BlockHashChannelManagerZ_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);
 561                 assert read_res instanceof Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ.Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ_OK;
 562                 this.chan_manager = ((Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ.Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ_OK) read_res).res.get_b();
 563                 this.chain_watch.watch_channel(monitors[0].get_funding_txo().get_a(), monitors[0]);
 564                 this.peer_manager = PeerManager.of(chan_manager.as_ChannelMessageHandler(), route_handler.as_RoutingMessageHandler(),
 565                         IgnoringMessageHandler.of().as_OnionMessageHandler(), (int)(System.currentTimeMillis() / 1000),
 566                         this.entropy_source.get_secure_random_bytes(), logger, this.custom_message_handler, this.node_signer);
 567                 if (!break_cross_peer_refs && (use_manual_watch || use_km_wrapper)) {
 568                     // When we pass monitors[0] into chain_watch.watch_channel we create a reference from the new Peer to a
 569                     // field in the old peer, preventing freeing of the original Peer until the new Peer is freed. Thus, we
 570                     // shouldn't bother waiting for the original to be freed later on.
 571                     cross_reload_ref_pollution = true;
 572                 }
 573             }
 574             this.node_id = chan_manager.get_our_node_id();
 575             bind_nio();
 576
 577             if (cross_reload_ref_pollution) {
 578                 // This really, really needs to be handled at the bindings layer, but its rather complicated -
 579                 // ChannelSigners can be cloned and passed around without java being involved, resulting in them being
 580                 // owned by both one or more ChannelMonitors and a ChannelManager, with only one having proper pointers
 581                 // to the ChannelSigner. Ideally, the ChannelSigner would have a global reference to the Java
 582                 // implementation class, but that results in circular references. Instead, we need some ability to,
 583                 // while cloning ChannelSigners, add new references in the calling Java struct (ie ChannelMonitor) to
 584                 // the ChannelSigner.
 585                 this.ptr_to = orig.chan_manager;
 586             }
 587             this.filter = null;
 588         }
 589
 590         TwoTuple_TxidCVec_C2Tuple_u32TxOutZZZ[] connect_block(Block b, int height, long expected_monitor_update_len) {
 591             byte[] header = Arrays.copyOfRange(b.bitcoinSerialize(), 0, 80);
 592             TwoTuple_usizeTransactionZ[] txn;
 593             if (b.hasTransactions()) {
 594                 assert b.getTransactions().size() == 1;
 595                 TwoTuple_usizeTransactionZ txp = TwoTuple_usizeTransactionZ.of((long) 0, b.getTransactions().get(0).bitcoinSerialize());
 596                 txn = new TwoTuple_usizeTransactionZ[]{txp};
 597             } else
 598                 txn = new TwoTuple_usizeTransactionZ[0];
 599             if (chain_monitor != null) {
 600                 chan_manager.as_Listen().block_connected(b.bitcoinSerialize(), height);
 601                 chain_monitor.as_Listen().block_connected(b.bitcoinSerialize(), height);
 602             } else {
 603                 chan_manager.as_Confirm().transactions_confirmed(header, txn, height);
 604                 chan_manager.as_Confirm().best_block_updated(header, height);
 605                 // Connect manually if we aren't using a ChainMonitor and are implementing Watch ourselves
 606                 synchronized (monitors) {
 607                     assert monitors.size() == 1;
 608                     for (ChannelMonitor mon : monitors.values()) {
 609                         TwoTuple_TxidCVec_C2Tuple_u32TxOutZZZ[] ret = mon.block_connected(header, txn, height, tx_broadcaster, fee_estimator, logger);
 610                         assert ret.length == expected_monitor_update_len;
 611                         return ret;
 612                     }
 613                 }
 614             }
 615             return null;
 616         }
 617
 618         Event[] get_monitor_events(int expected_len) {
 619             if (use_chan_manager_constructor) {
 620                 while (true) {
 621                     synchronized (this.pending_manager_events) {
 622                         if (expected_len != 0 && this.pending_manager_events.size() == expected_len) {
 623                             break;
 624                         }
 625                     }
 626                     if (expected_len == 0) {
 627                         try { Thread.sleep(500); } catch (InterruptedException e) { assert false; }
 628                         break;
 629                     } else {
 630                         Thread.yield();
 631                     }
 632                 }
 633                 synchronized (this.pending_manager_events) {
 634                     Event[] res = this.pending_manager_events.toArray(new Event[0]);
 635                     this.pending_manager_events.clear();
 636                     assert res.length == expected_len;
 637                     return res;
 638                 }
 639             } else if (chain_monitor != null) {
 640                 ArrayList<Event> l = new ArrayList<Event>();
 641                 chain_monitor.as_EventsProvider().process_pending_events(EventHandler.new_impl(l::add));
 642                 assert l.size() == expected_len;
 643                 return l.toArray(new Event[0]);
 644             } else {
 645                 synchronized (monitors) {
 646                     assert monitors.size() == 1;
 647                     for (ChannelMonitor mon : monitors.values()) {
 648                         Event[] res = mon.get_and_clear_pending_events();
 649                         assert res.length == expected_len;
 650                         return res;
 651                     }
 652                     return null;
 653                 }
 654             }
 655         }
 656
 657         Event[] get_manager_events(int expected_len, Peer peer1, Peer peer2) {
 658             assert expected_len != 0;
 659             if (!use_nio_peer_handler) {
 660                 maybe_exchange_peer_messages(peer1, peer2);
 661             }
 662             Event[] res = new Event[0];
 663             if (use_chan_manager_constructor) {
 664                 while (res.length < expected_len) {
 665                     synchronized (this.pending_manager_events) {
 666                         if (this.pending_manager_events.size() >= expected_len) {
 667                             res = this.pending_manager_events.toArray(res);
 668                             assert res.length == expected_len;
 669                             this.pending_manager_events.clear();
 670                         }
 671                         if (res.length < expected_len) {
 672                             try { this.pending_manager_events.wait(); } catch (InterruptedException e) { assert false; }
 673                         }
 674                     }
 675                 }
 676             } else {
 677                 ArrayList<Event> l = new ArrayList<Event>();
 678                 while (l.size() < expected_len) {
 679                     Thread.yield();
 680                     if (use_nio_peer_handler) {
 681                         peer1.nio_peer_handler.check_events();
 682                         peer2.nio_peer_handler.check_events();
 683                     }
 684                     chan_manager.as_EventsProvider().process_pending_events(EventHandler.new_impl(l::add));
 685                 }
 686                 return l.toArray(new Event[0]);
 687             }
 688             assert res.length == expected_len;
 689             return res;
 690         }
 691     }
 692
 693     static class DescriptorHolder { SocketDescriptor val; }
 694
 695     boolean running = false;
 696     final LinkedList<Runnable> runqueue = new LinkedList();
 697     boolean ran = false;
 698     Thread t = new Thread(() -> {
 699             while (true) {
 700                 try {
 701                     Runnable r;
 702                     synchronized (runqueue) {
 703                         while (runqueue.isEmpty()) {
 704                             runqueue.wait();
 705                         }
 706                         running = true;
 707                         r = runqueue.pollFirst();
 708                     }
 709                     r.run();
 710                     synchronized (runqueue) {
 711                         running = false;
 712                         runqueue.notifyAll();
 713                     }
 714                 } catch (InterruptedException e) {
 715                     return;
 716                 }
 717             }
 718     });
 719
 720     void maybe_exchange_peer_messages(Peer peer1, Peer peer2) {
 721         if (!use_nio_peer_handler) {
 722             while (true) {
 723                 peer1.peer_manager.process_events();
 724                 peer2.peer_manager.process_events();
 725                 synchronized (runqueue) {
 726                     if (runqueue.isEmpty() && !running) {
 727                         if (ran) {
 728                             ran = false;
 729                             continue;
 730                         } else { break; }
 731                     }
 732                     try { runqueue.wait(); } catch (InterruptedException e) { assert false; }
 733                 }
 734             }
 735         } else if (!use_chan_manager_constructor) {
 736             peer1.nio_peer_handler.check_events();
 737             peer2.nio_peer_handler.check_events();
 738         }
 739     }
 740     void do_read_event(PeerManager pm, SocketDescriptor descriptor, byte[] data) {
 741         if (!t.isAlive()) t.start();
 742         synchronized (runqueue) {
 743             ran = true;
 744             runqueue.add(() -> {
 745                 Result_boolPeerHandleErrorZ res = pm.read_event(descriptor, data);
 746                 assert res instanceof Result_boolPeerHandleErrorZ.Result_boolPeerHandleErrorZ_OK;
 747             });
 748             runqueue.notifyAll();
 749         }
 750         must_free_objs.add(new WeakReference<>(data));
 751     }
 752
 753     void connect_peers(final Peer peer1, final Peer peer2) {
 754         peer2.connected_peer_node_id = peer1.node_id;
 755         peer1.connected_peer_node_id = peer2.node_id;
 756         if (use_nio_peer_handler) {
 757             try {
 758                 peer1.nio_peer_handler.connect(peer2.chan_manager.get_our_node_id(), new InetSocketAddress("127.0.0.1", peer2.nio_port), 100);
 759             } catch (IOException e) { assert false; }
 760             while (peer1.peer_manager.get_peer_node_ids().length == 0 || peer2.peer_manager.get_peer_node_ids().length == 0) {
 761                 Thread.yield();
 762             }
 763         } else {
 764             DescriptorHolder descriptor1 = new DescriptorHolder();
 765             DescriptorHolder descriptor1ref = descriptor1;
 766             SocketDescriptor descriptor2 = SocketDescriptor.new_impl(new SocketDescriptor.SocketDescriptorInterface() {
 767                 @Override
 768                 public long send_data(byte[] data, boolean resume_read) {
 769                     do_read_event(peer1.peer_manager, descriptor1ref.val, data);
 770                     return data.length;
 771                 }
 772
 773                 @Override public void disconnect_socket() { assert false; }
 774                 @Override public boolean eq(SocketDescriptor other_arg) { return other_arg.hash() == 2; }
 775                 @Override public long hash() { return 2; }
 776             });
 777
 778             descriptor1.val = SocketDescriptor.new_impl(new SocketDescriptor.SocketDescriptorInterface() {
 779                 @Override
 780                 public long send_data(byte[] data, boolean resume_read) {
 781                     do_read_event(peer2.peer_manager, descriptor2, data);
 782                     return data.length;
 783                 }
 784
 785                 @Override public void disconnect_socket() { assert false; }
 786                 @Override public boolean eq(SocketDescriptor other_arg) { return other_arg.hash() == 1; }
 787                 @Override public long hash() { return 1; }
 788             });
 789
 790             Result_CVec_u8ZPeerHandleErrorZ conn_res = peer1.peer_manager.new_outbound_connection(peer2.node_id, descriptor1.val, Option_NetAddressZ.none());
 791             assert conn_res instanceof Result_CVec_u8ZPeerHandleErrorZ.Result_CVec_u8ZPeerHandleErrorZ_OK;
 792
 793             Result_NonePeerHandleErrorZ inbound_conn_res = peer2.peer_manager.new_inbound_connection(descriptor2, Option_NetAddressZ.none());
 794             assert inbound_conn_res instanceof Result_NonePeerHandleErrorZ.Result_NonePeerHandleErrorZ_OK;
 795             do_read_event(peer2.peer_manager, descriptor2, ((Result_CVec_u8ZPeerHandleErrorZ.Result_CVec_u8ZPeerHandleErrorZ_OK) conn_res).res);
 796
 797             maybe_exchange_peer_messages(peer1, peer2);
 798         }
 799     }
 800
 801     TestState do_test_message_handler() throws InterruptedException {
 802         Peer peer1 = new Peer((byte) 1);
 803         Peer peer2 = new Peer((byte) 2);
 804
 805         connect_peers(peer1, peer2);
 806
 807         UInt128 user_id = new UInt128(new byte[] {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16});
 808
 809         Result__u832APIErrorZ cc_res = peer1.chan_manager.create_channel(peer2.node_id, 100000, 1000, user_id, null);
 810         assert cc_res instanceof Result__u832APIErrorZ.Result__u832APIErrorZ_OK;
 811
 812         // Previously, this was a SEGFAULT instead of get_funding_txo() returning null.
 813         ChannelDetails pre_funding_chan = peer1.chan_manager.list_channels()[0];
 814         assert pre_funding_chan.get_funding_txo() == null;
 815
 816         Event[] events = peer1.get_manager_events(1, peer1, peer2);
 817         assert events[0] instanceof Event.FundingGenerationReady;
 818         assert ((Event.FundingGenerationReady) events[0]).channel_value_satoshis == 100000;
 819         assert ((Event.FundingGenerationReady) events[0]).user_channel_id.equals(user_id);
 820         byte[] funding_spk = ((Event.FundingGenerationReady) events[0]).output_script;
 821         assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
 822         byte[] chan_id = ((Event.FundingGenerationReady) events[0]).temporary_channel_id;
 823
 824         BitcoinNetworkParams bitcoinj_net = BitcoinNetworkParams.of(BitcoinNetwork.MAINNET);
 825
 826         Transaction funding = new Transaction(bitcoinj_net);
 827         funding.addInput(new TransactionInput(bitcoinj_net, funding, new byte[0]));
 828         funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
 829         funding.getInput(0).getWitness().setPush(0, new byte[]{0x1});
 830         funding.addOutput(Coin.SATOSHI.multiply(100000), new Script(funding_spk));
 831         Result_NoneAPIErrorZ funding_res = peer1.chan_manager.funding_transaction_generated(chan_id, peer2.node_id, funding.bitcoinSerialize());
 832         assert funding_res instanceof Result_NoneAPIErrorZ.Result_NoneAPIErrorZ_OK;
 833
 834         gossip_txout = new TxOut(100000, funding_spk);
 835
 836         maybe_exchange_peer_messages(peer1, peer2);
 837         synchronized (peer1.broadcast_set) {
 838             while (peer1.broadcast_set.size() != 1) {
 839                 peer1.broadcast_set.wait();
 840             }
 841         }
 842
 843         events = peer1.get_manager_events(1, peer1, peer2);
 844         assert events[0] instanceof Event.ChannelPending;
 845
 846         events = peer2.get_manager_events(1, peer1, peer2);
 847         assert events[0] instanceof Event.ChannelPending;
 848
 849         assert peer1.broadcast_set.size() == 1;
 850         assert Arrays.equals(peer1.broadcast_set.get(0), funding.bitcoinSerialize());
 851         peer1.broadcast_set.clear();
 852
 853         Block b = new Block(bitcoinj_net, 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
 854         peer1.connect_block(b, 1, 0);
 855         peer2.connect_block(b, 1, 0);
 856
 857         for (int height = 2; height < 10; height++) {
 858             b = new Block(bitcoinj_net, 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[0]));
 859             peer1.connect_block(b, height, 0);
 860             peer2.connect_block(b, height, 0);
 861         }
 862
 863         maybe_exchange_peer_messages(peer1, peer2);
 864         while (peer1.chan_manager.list_usable_channels().length != 1 || peer2.chan_manager.list_usable_channels().length != 1) ;
 865
 866         events = peer1.get_manager_events(1, peer1, peer2);
 867         assert events[0] instanceof Event.ChannelReady;
 868
 869         events = peer2.get_manager_events(1, peer1, peer2);
 870         assert events[0] instanceof Event.ChannelReady;
 871
 872         ChannelDetails[] peer1_chans = peer1.chan_manager.list_usable_channels();
 873         ChannelDetails[] peer2_chans = peer2.chan_manager.list_usable_channels();
 874         assert peer1_chans.length == 1;
 875         assert peer2_chans.length == 1;
 876         assert peer1_chans[0].get_channel_value_satoshis() == 100000;
 877         assert peer1_chans[0].get_is_usable();
 878         Option_u64Z short_chan_id = peer1_chans[0].get_short_channel_id();
 879         assert short_chan_id instanceof Option_u64Z.Some;
 880         assert ((Option_u64Z.Some)short_chan_id).some == (1L << 40); // 0th output in the 0th transaction in the 1st block
 881         assert Arrays.equals(peer1_chans[0].get_channel_id(), funding.getTxId().getReversedBytes());
 882         assert Arrays.equals(peer2_chans[0].get_channel_id(), funding.getTxId().getReversedBytes());
 883
 884         Result_InvoiceSignOrCreationErrorZ 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());
 885         assert invoice instanceof Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK;
 886         System.out.println("Got invoice: " + ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.to_str());
 887
 888         Result_InvoiceParseOrSemanticErrorZ parsed_invoice = Invoice.from_str(((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.to_str());
 889         assert parsed_invoice instanceof Result_InvoiceParseOrSemanticErrorZ.Result_InvoiceParseOrSemanticErrorZ_OK;
 890         //assert ((Result_InvoiceParseOrSemanticErrorZ.Result_InvoiceParseOrSemanticErrorZ_OK) parsed_invoice).res.fallback_addresses().length == 0;
 891         assert Arrays.equals(((Result_InvoiceParseOrSemanticErrorZ.Result_InvoiceParseOrSemanticErrorZ_OK) parsed_invoice).res.payment_hash(), ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.payment_hash());
 892         SignedRawInvoice signed_raw = ((Result_InvoiceParseOrSemanticErrorZ.Result_InvoiceParseOrSemanticErrorZ_OK) parsed_invoice).res.into_signed_raw();
 893         RawInvoice raw_invoice = signed_raw.raw_invoice();
 894         byte[] desc_hash = raw_invoice.signable_hash();
 895         Description raw_invoice_description = raw_invoice.description();
 896         String description_string = raw_invoice_description.into_inner();
 897         assert description_string.equals("Invoice Description");
 898
 899         if (!use_invoice_payer) {
 900             byte[] payment_hash = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.payment_hash();
 901             byte[] payment_secret = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.payment_secret();
 902             byte[] dest_node_id = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.recover_payee_pub_key();
 903             assert Arrays.equals(dest_node_id, peer2.node_id);
 904             InvoiceFeatures invoice_features = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.features();
 905             RouteHint[] route_hints = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.route_hints();
 906
 907             PaymentParameters payee = PaymentParameters.of(peer2.node_id, invoice_features, Hints.clear(route_hints), Option_u64Z.none(), 6*24*14, (byte)1, (byte)2, new long[0], 42);
 908             RouteParameters route_params = RouteParameters.of(payee, 10000000);
 909             Result_RouteLightningErrorZ route_res = UtilMethods.find_route(
 910                     peer1.chan_manager.get_our_node_id(), route_params, peer1.net_graph,
 911                     peer1_chans, peer1.logger, ProbabilisticScorer.of(ProbabilisticScoringParameters.with_default(), peer1.net_graph, peer1.logger).as_Score(), new byte[32]);
 912             assert route_res instanceof Result_RouteLightningErrorZ.Result_RouteLightningErrorZ_OK;
 913             Route route = ((Result_RouteLightningErrorZ.Result_RouteLightningErrorZ_OK) route_res).res;
 914             assert route.get_paths().length == 1;
 915             assert route.get_paths()[0].get_hops().length == 1;
 916             assert route.get_paths()[0].final_value_msat() == 10000000;
 917
 918             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 };
 919             Result_NonePaymentSendFailureZ payment_res = peer1.chan_manager.send_payment_with_route(route, payment_hash, RecipientOnionFields.secret_only(payment_secret), payment_id);
 920             assert payment_res instanceof Result_NonePaymentSendFailureZ.Result_NonePaymentSendFailureZ_OK;
 921
 922             RouteHop[] hops = new RouteHop[1];
 923             byte[] hop_pubkey = new byte[33];
 924             hop_pubkey[0] = 3;
 925             hop_pubkey[1] = 42;
 926             NodeFeatures node_features = NodeFeatures.empty();
 927             ChannelFeatures channel_features = ChannelFeatures.empty();
 928             hops[0] = RouteHop.of(hop_pubkey, node_features, 42, channel_features, 100, 0);
 929             Path[] paths = new Path[1];
 930             paths[0] = Path.of(hops, null);
 931             Route r2 = Route.of(paths, payee);
 932             payment_res = peer1.chan_manager.send_payment_with_route(r2, payment_hash, RecipientOnionFields.secret_only(payment_secret), payment_id);
 933             assert payment_res instanceof Result_NonePaymentSendFailureZ.Result_NonePaymentSendFailureZ_Err;
 934         } else {
 935             Result_PaymentIdPaymentErrorZ send_res = UtilMethods.pay_invoice(((Result_InvoiceParseOrSemanticErrorZ.Result_InvoiceParseOrSemanticErrorZ_OK) parsed_invoice).res, Retry.attempts(0), peer1.chan_manager);
 936             assert send_res instanceof Result_PaymentIdPaymentErrorZ.Result_PaymentIdPaymentErrorZ_OK;
 937         }
 938
 939         if (reload_peers) {
 940             if (use_chan_manager_constructor) {
 941                 peer1.constructor.interrupt();
 942                 peer2.constructor.interrupt();
 943             } else if (use_nio_peer_handler) {
 944                 peer1.nio_peer_handler.interrupt();
 945                 peer2.nio_peer_handler.interrupt();
 946             }
 947             WeakReference<Peer> op1 = new WeakReference<Peer>(peer1);
 948             peer1 = new Peer(peer1);
 949             peer2 = new Peer(peer2);
 950             return new TestState(op1, peer1, peer2, b.getHash());
 951         }
 952         return new TestState(null, peer1, peer2, b.getHash());
 953     }
 954
 955     boolean cross_reload_ref_pollution = false;
 956     class TestState {
 957         private final WeakReference<Peer> ref_block;
 958         private final Peer peer1;
 959         private final Peer peer2;
 960         public Sha256Hash best_blockhash;
 961
 962         public TestState(WeakReference<Peer> ref_block, Peer peer1, Peer peer2, Sha256Hash best_blockhash) {
 963             this.ref_block = ref_block;
 964             this.peer1 = peer1;
 965             this.peer2 = peer2;
 966             this.best_blockhash = best_blockhash;
 967         }
 968     }
 969     void do_test_message_handler_b(TestState state) throws Exception {
 970         GcCheck obj = new GcCheck();
 971         if (state.ref_block != null) {
 972             // Ensure the original peers get freed before we move on. Note that we have to be in a different function
 973             // scope to do so as the (at least current OpenJDK) JRE won't release anything created in the same scope.
 974             while (!cross_reload_ref_pollution && state.ref_block.get() != null) {
 975                 System.gc();
 976                 System.runFinalization();
 977             }
 978             connect_peers(state.peer1, state.peer2);
 979         }
 980
 981         Event[] events = state.peer2.get_manager_events(1, state.peer1, state.peer2);
 982         assert events[0] instanceof Event.PendingHTLCsForwardable;
 983         state.peer2.chan_manager.process_pending_htlc_forwards();
 984
 985         events = state.peer2.get_manager_events(1, state.peer1, state.peer2);
 986         assert events[0] instanceof Event.PaymentClaimable;
 987         assert ((Event.PaymentClaimable)events[0]).purpose instanceof PaymentPurpose.InvoicePayment;
 988         byte[] payment_preimage = ((PaymentPurpose.InvoicePayment)((Event.PaymentClaimable)events[0]).purpose).payment_preimage;
 989         assert !Arrays.equals(payment_preimage, new byte[32]);
 990         state.peer2.chan_manager.claim_funds(payment_preimage);
 991
 992         events = state.peer2.get_manager_events(1, state.peer1, state.peer2);
 993         assert events[0] instanceof Event.PaymentClaimed;
 994         assert ((Event.PaymentClaimed)events[0]).purpose instanceof PaymentPurpose.InvoicePayment;
 995         payment_preimage = ((PaymentPurpose.InvoicePayment)((Event.PaymentClaimed)events[0]).purpose).payment_preimage;
 996         assert !Arrays.equals(payment_preimage, new byte[32]);
 997
 998         events = state.peer1.get_manager_events(2, state.peer1, state.peer2);
 999         assert events[0] instanceof Event.PaymentSent;
1000         assert Arrays.equals(((Event.PaymentSent) events[0]).payment_preimage, payment_preimage);
1001         assert events[1] instanceof Event.PaymentPathSuccessful;
1002         assert Arrays.equals(((Event.PaymentPathSuccessful) events[1]).payment_hash, ((Event.PaymentSent) events[0]).payment_hash);
1003
1004         if (use_nio_peer_handler) {
1005             // We receive PaymentSent immediately upon receipt of the payment preimage, but we expect to not have an
1006             // HTLC transaction to broadcast below, which requires a bit more time to fully complete the
1007             // commitment-transaction-update dance between both peers.
1008             Thread.sleep(100);
1009         }
1010
1011         if (state.peer1.chain_monitor != null) {
1012             Balance[] peer1_balances = state.peer1.chain_monitor.get_claimable_balances(state.peer1.chan_manager.list_channels());
1013             assert peer1_balances.length == 0;
1014             Balance[] peer2_balances = state.peer2.chain_monitor.get_claimable_balances(state.peer2.chan_manager.list_channels());
1015             assert peer2_balances.length == 0;
1016         }
1017
1018         ChannelDetails[] peer1_chans = state.peer1.chan_manager.list_channels();
1019
1020         if (nice_close) {
1021             Result_NoneAPIErrorZ close_res = state.peer1.chan_manager.close_channel(peer1_chans[0].get_channel_id(), state.peer2.node_id);
1022             assert close_res instanceof Result_NoneAPIErrorZ.Result_NoneAPIErrorZ_OK;
1023             maybe_exchange_peer_messages(state.peer1, state.peer2);
1024             synchronized (state.peer1.broadcast_set) {
1025                 while (state.peer1.broadcast_set.size() != 1) state.peer1.broadcast_set.wait();
1026             }
1027             synchronized (state.peer2.broadcast_set) {
1028                 while (state.peer2.broadcast_set.size() != 1) state.peer2.broadcast_set.wait();
1029             }
1030         } else {
1031             state.peer1.chan_manager.force_close_all_channels_broadcasting_latest_txn();
1032             maybe_exchange_peer_messages(state.peer1, state.peer2);
1033             synchronized (state.peer1.broadcast_set) {
1034                 while (state.peer1.broadcast_set.size() != 1) state.peer1.broadcast_set.wait();
1035             }
1036             synchronized (state.peer2.broadcast_set) {
1037                 while (state.peer2.broadcast_set.size() != 1) state.peer2.broadcast_set.wait();
1038             }
1039         }
1040
1041         assert state.peer1.broadcast_set.size() == 1;
1042         assert state.peer2.broadcast_set.size() == 1;
1043
1044         events = state.peer2.get_manager_events(1, state.peer1, state.peer2);
1045         assert events[0] instanceof Event.ChannelClosed;
1046         events = state.peer1.get_manager_events(1, state.peer1, state.peer2);
1047         assert events[0] instanceof Event.ChannelClosed;
1048
1049         if (state.peer1.chain_monitor != null) {
1050             Balance[] peer1_balances = state.peer1.chain_monitor.get_claimable_balances(state.peer1.chan_manager.list_channels());
1051             assert peer1_balances.length == 1;
1052             for (Balance bal : peer1_balances) {
1053                 assert bal instanceof Balance.ClaimableOnChannelClose;
1054                 long expected_tx_fee = 183;
1055                 assert ((Balance.ClaimableOnChannelClose) bal).claimable_amount_satoshis == 100000 - 1 - 10000 - expected_tx_fee;
1056             }
1057             Balance[] peer2_balances = state.peer2.chain_monitor.get_claimable_balances(state.peer2.chan_manager.list_channels());
1058             assert peer2_balances.length == 1;
1059             for (Balance bal : peer2_balances) {
1060                 assert bal instanceof Balance.ClaimableOnChannelClose;
1061                 assert ((Balance.ClaimableOnChannelClose) bal).claimable_amount_satoshis == 10000 + 1;
1062             }
1063         }
1064
1065         if (!nice_close) {
1066             BitcoinNetworkParams bitcoinj_net = BitcoinNetworkParams.of(BitcoinNetwork.MAINNET);
1067             Transaction tx = new Transaction(bitcoinj_net, state.peer1.broadcast_set.getFirst());
1068             Block b = new Block(bitcoinj_net, 2, state.best_blockhash, Sha256Hash.ZERO_HASH, 42, 0, 0,
1069                     Arrays.asList(new Transaction[]{tx}));
1070             TwoTuple_TxidCVec_C2Tuple_u32TxOutZZZ[] watch_outputs = state.peer2.connect_block(b, 10, 1);
1071             if (watch_outputs != null) { // We only process watch_outputs manually when we use a manually-build Watch impl
1072                 assert watch_outputs.length == 1;
1073                 assert Arrays.equals(watch_outputs[0].get_a(), tx.getTxId().getReversedBytes());
1074                 assert watch_outputs[0].get_b().length == 2;
1075                 assert watch_outputs[0].get_b()[0].get_a() == 0;
1076                 assert watch_outputs[0].get_b()[1].get_a() == 1;
1077             }
1078
1079             for (int i = 11; i < 21; i++) {
1080                 b = new Block(bitcoinj_net, 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, new ArrayList<>());
1081                 state.peer2.connect_block(b, i, 0);
1082             }
1083
1084             Event[] broadcastable_event = state.peer2.get_monitor_events(1);
1085             for (ChannelMonitor mon : state.peer2.monitors.values()) {
1086                 // This used to be buggy and double-free, so go ahead and fetch them!
1087                 byte[][] txn = mon.get_latest_holder_commitment_txn(state.peer2.logger);
1088             }
1089             assert broadcastable_event.length == 1;
1090             assert broadcastable_event[0] instanceof Event.SpendableOutputs;
1091             if (state.peer2.explicit_keys_manager != null) {
1092                 TxOut[] additional_outputs = new TxOut[]{new TxOut(420, new byte[]{0x42})};
1093                 Result_TransactionNoneZ tx_res = state.peer2.explicit_keys_manager.spend_spendable_outputs(((Event.SpendableOutputs) broadcastable_event[0]).outputs, additional_outputs, new byte[]{0x00}, 253);
1094                 assert tx_res instanceof Result_TransactionNoneZ.Result_TransactionNoneZ_OK;
1095                 Transaction built_tx = new Transaction(bitcoinj_net, ((Result_TransactionNoneZ.Result_TransactionNoneZ_OK) tx_res).res);
1096                 assert built_tx.getOutputs().size() == 2;
1097                 assert Arrays.equals(built_tx.getOutput(1).getScriptBytes(), new byte[]{0x00});
1098                 assert Arrays.equals(built_tx.getOutput(0).getScriptBytes(), new byte[]{0x42});
1099                 assert built_tx.getOutput(0).getValue().value == 420;
1100             }
1101         }
1102
1103         // Test exchanging a custom message (note that ChannelManagerConstructor) always loads an IgnorimgMessageHandler
1104         // so we cannot exchange custom messages with it
1105         if (!use_chan_manager_constructor) {
1106             byte[] custom_message_bytes = new byte[]{0x42, 0x44, 0x43, 0x00};
1107             synchronized(state.peer1.custom_messages_to_send) {
1108                 state.peer1.custom_messages_to_send.add(custom_message_bytes);
1109             }
1110             state.peer1.peer_manager.process_events();
1111             synchronized (state.peer2.received_custom_messages) {
1112                 while (true) {
1113                     if (state.peer2.received_custom_messages.isEmpty()) {
1114                         state.peer2.received_custom_messages.wait();
1115                         continue;
1116                     }
1117                     assert state.peer2.received_custom_messages.size() == 1;
1118                     assert Arrays.equals(state.peer2.received_custom_messages.get(0), custom_message_bytes);
1119                     break;
1120                 }
1121             }
1122         }
1123
1124         if (use_nio_peer_handler) {
1125             state.peer1.peer_manager.disconnect_by_node_id(state.peer2.chan_manager.get_our_node_id());
1126             while (state.peer1.peer_manager.get_peer_node_ids().length != 0) Thread.yield();
1127             while (state.peer2.peer_manager.get_peer_node_ids().length != 0) Thread.yield();
1128             state.peer1.nio_peer_handler.interrupt();
1129             state.peer2.nio_peer_handler.interrupt();
1130         }
1131
1132         state.peer1.get_monitor_events(0);
1133         state.peer2.get_monitor_events(0);
1134
1135         if (use_chan_manager_constructor) {
1136             state.peer1.constructor.interrupt();
1137             state.peer2.constructor.interrupt();
1138         }
1139
1140         t.interrupt();
1141
1142         if (state.peer1.net_graph != null)
1143             state.peer1.net_graph.write();
1144
1145         // Construct the only Option_Enum::Variant(OpaqueStruct) we have in the codebase as this used to cause double-frees:
1146         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};
1147         Result_ChannelUpdateDecodeErrorZ upd_msg = ChannelUpdate.read(serd);
1148         assert upd_msg instanceof Result_ChannelUpdateDecodeErrorZ.Result_ChannelUpdateDecodeErrorZ_OK;
1149         assert ((Result_ChannelUpdateDecodeErrorZ.Result_ChannelUpdateDecodeErrorZ_OK) upd_msg).res.get_contents().get_htlc_maximum_msat() == 0xdeadbeef42424242L;
1150         Option_NetworkUpdateZ upd = Option_NetworkUpdateZ.some(NetworkUpdate.channel_update_message(((Result_ChannelUpdateDecodeErrorZ.Result_ChannelUpdateDecodeErrorZ_OK) upd_msg).res));
1151
1152         if (use_chan_manager_constructor) {
1153             // Lock the scorer twice back-to-back to check that the try-with-resources AutoCloseable on the scorer works.
1154             try (ChannelManagerConstructor.ScorerWrapper score = state.peer1.constructor.get_locked_scorer()) {
1155                 score.prob_scorer.debug_log_liquidity_stats();
1156             }
1157             try (ChannelManagerConstructor.ScorerWrapper score = state.peer1.constructor.get_locked_scorer()) {
1158                 score.prob_scorer.clear_manual_penalties();
1159             }
1160         }
1161     }
1162
1163     java.util.LinkedList<WeakReference<Object>> must_free_objs = new java.util.LinkedList();
1164     int gc_count = 0;
1165     int gc_exp_count = 0;
1166     class GcCheck {
1167         GcCheck() { gc_exp_count += 1; }
1168         @Override
1169         protected void finalize() throws Throwable {
1170             gc_count += 1;
1171             super.finalize();
1172         }
1173     }
1174 }
1175 public class HumanObjectPeerTest {
1176     static HumanObjectPeerTestInstance do_test_run(boolean nice_close, boolean use_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 {
1177         HumanObjectPeerTestInstance instance = new HumanObjectPeerTestInstance(nice_close, use_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);
1178         HumanObjectPeerTestInstance.TestState state = instance.do_test_message_handler();
1179         instance.do_test_message_handler_b(state);
1180         return instance;
1181     }
1182     static void do_test(boolean nice_close, boolean use_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 {
1183         HumanObjectPeerTestInstance instance = do_test_run(nice_close, use_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);
1184         while (instance.gc_count != instance.gc_exp_count) {
1185             System.gc();
1186             System.runFinalization();
1187         }
1188         for (WeakReference<Object> o : instance.must_free_objs)
1189             assert o.get() == null;
1190     }
1191     public static final int TEST_ITERATIONS = (1 << 9);
1192     public static void do_test_message_handler(IntConsumer statusFunction) throws Exception {
1193         Thread gc_thread = new Thread(() -> {
1194             while (true) {
1195                 System.gc();
1196                 System.runFinalization();
1197                 try { Thread.sleep(0, 1); } catch (InterruptedException e) { break; }
1198             }
1199         }, "Test GC Thread");
1200         gc_thread.start();
1201         for (int i = 0; i < TEST_ITERATIONS; i++) {
1202             boolean nice_close =                   (i & (1 << 0)) != 0;
1203             boolean use_km_wrapper =               (i & (1 << 1)) != 0;
1204             boolean use_manual_watch =             (i & (1 << 2)) != 0;
1205             boolean reload_peers =                 (i & (1 << 3)) != 0;
1206             boolean break_cross_refs =             (i & (1 << 4)) != 0;
1207             boolean use_ignoring_routing_handler = (i & (1 << 5)) != 0;
1208             boolean use_chan_manager_constructor = (i & (1 << 6)) != 0;
1209             boolean use_invoice_payer =            (i & (1 << 7)) != 0;
1210             boolean nio_peer_handler =             (i & (1 << 8)) != 0;
1211             if (break_cross_refs && !reload_peers) {
1212                 // There are no cross refs to break without reloading peers.
1213                 continue;
1214             }
1215             if (use_chan_manager_constructor && (use_manual_watch || !nio_peer_handler)) {
1216                 // ChannelManagerConstructor requires a ChainMonitor as the Watch and creates a NioPeerHandler for us.
1217                 continue;
1218             }
1219             if (!use_chan_manager_constructor && (use_ignoring_routing_handler)) {
1220                 // We rely on the ChannelManagerConstructor to convert null into an IgnoringMessageHandler, so don't
1221                 // try to run with an IgnoringMessageHandler unless we're also using a ChannelManagerConstructor.
1222                 continue;
1223             }
1224             if (use_chan_manager_constructor && use_ignoring_routing_handler && use_invoice_payer) {
1225                 // As documented on ChannelManagerConstructor, if we provide a `null` NetworkGraph (because we want to
1226                 // use an IgnoringMessageHandler), no InvoicePayer will be constructored for us, thus we cannot use an
1227                 // InvoicePayer to send payments in this case.
1228                 continue;
1229             }
1230             if (use_chan_manager_constructor && use_km_wrapper) {
1231                 // ChannelManagerConstructor requires a full KeysManager, so using wrapped keys interfaces doesn't make
1232                 // any sense.
1233                 continue;
1234             }
1235             statusFunction.accept(i);
1236             do_test(nice_close, use_km_wrapper, use_manual_watch, reload_peers, break_cross_refs, nio_peer_handler, use_ignoring_routing_handler, use_chan_manager_constructor, use_invoice_payer);
1237         }
1238         gc_thread.interrupt();
1239         gc_thread.join();
1240     }
1241     @Test
1242     public void test_message_handler() throws Exception {
1243         do_test_message_handler(i -> System.err.println("Running test with flags " + i));
1244     }
1245
1246     // This is used in the test jar to test the built jar is runnable
1247     public static void main(String[] args) {
1248         try {
1249             do_test_message_handler(i -> System.err.println("Running test with flags " + i));
1250         } catch (Exception e) {
1251             System.err.println("Caught exception:");
1252             System.err.println(e);
1253             System.exit(1);
1254         }
1255     }
1256 }