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

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