_ 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.UInt5;
  12
  13 import java.io.IOException;
  14 import java.lang.ref.WeakReference;
  15 import java.net.InetSocketAddress;
  16 import java.util.*;
  17 import java.util.function.IntConsumer;
  18
  19 class HumanObjectPeerTestInstance {
  20     private final boolean nice_close;
  21     private final boolean use_km_wrapper;
  22     private final boolean use_manual_watch;
  23     private final boolean reload_peers;
  24     private final boolean break_cross_peer_refs;
  25     private final boolean use_nio_peer_handler;
  26     private final boolean use_filter;
  27     private final boolean use_ignore_handler;
  28     private final boolean use_chan_manager_constructor;
  29     private final boolean use_invoice_payer;
  30     TxOut gossip_txout = null;
  31
  32     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) {
  33         this.nice_close = nice_close;
  34         this.use_km_wrapper = use_km_wrapper;
  35         this.use_manual_watch = use_manual_watch;
  36         this.reload_peers = reload_peers;
  37         this.break_cross_peer_refs = break_cross_peer_refs;
  38         this.use_nio_peer_handler = use_nio_peer_handler;
  39         this.use_filter = use_filter;
  40         this.use_ignore_handler = use_ignore_handler;
  41         this.use_chan_manager_constructor = use_chan_manager_constructor;
  42         this.use_invoice_payer = use_invoice_payer;
  43     }
  44
  45     class Peer {
  46         KeysInterface manual_keysif(KeysInterface underlying_if) {
  47             return KeysInterface.new_impl(new KeysInterface.KeysInterfaceInterface() {
  48                 @Override public Result_SecretKeyNoneZ get_node_secret(Recipient recipient) { return underlying_if.get_node_secret(recipient); }
  49
  50                 @Override public Result_SharedSecretNoneZ ecdh(Recipient recipient, byte[] other_key, Option_ScalarZ tweak) { return underlying_if.ecdh(recipient, other_key, tweak); }
  51                 @Override public byte[] get_destination_script() { return underlying_if.get_destination_script(); }
  52                 @Override public ShutdownScript get_shutdown_scriptpubkey() { return underlying_if.get_shutdown_scriptpubkey(); }
  53
  54                 @Override
  55                 public Sign get_channel_signer(boolean inbound, long channel_value_satoshis) {
  56                     Sign underlying_ck = underlying_if.get_channel_signer(inbound, channel_value_satoshis);
  57                     BaseSign underlying_base = underlying_ck.get_base_sign();
  58                     BaseSign.BaseSignInterface bsi = new BaseSign.BaseSignInterface() {
  59                         @Override public byte[] get_per_commitment_point(long idx) {
  60                             return underlying_base.get_per_commitment_point(idx);
  61                         }
  62                         @Override public byte[] release_commitment_secret(long idx) {
  63                             return underlying_base.release_commitment_secret(idx);
  64                         }
  65                         @Override public Result_NoneNoneZ validate_holder_commitment(HolderCommitmentTransaction holder_tx, byte[][] preimages) {
  66                             return underlying_base.validate_holder_commitment(holder_tx, preimages);
  67                         }
  68                         @Override public byte[] channel_keys_id() {
  69                             return new byte[32];
  70                         }
  71                         @Override public Result_C2Tuple_SignatureCVec_SignatureZZNoneZ sign_counterparty_commitment(CommitmentTransaction commitment_tx, byte[][] preimages) {
  72                             return underlying_base.sign_counterparty_commitment(commitment_tx, preimages);
  73                         }
  74                         @Override public Result_NoneNoneZ validate_counterparty_revocation(long idx, byte[] secret) {
  75                             return underlying_base.validate_counterparty_revocation(idx, secret);
  76                         }
  77                         @Override public Result_C2Tuple_SignatureCVec_SignatureZZNoneZ sign_holder_commitment_and_htlcs(HolderCommitmentTransaction holder_commitment_tx) {
  78                             return underlying_base.sign_holder_commitment_and_htlcs(holder_commitment_tx);
  79                         }
  80                         @Override public Result_SignatureNoneZ sign_justice_revoked_output(byte[] justice_tx, long input, long amount, byte[] per_commitment_key) {
  81                             return underlying_base.sign_justice_revoked_output(justice_tx, input, amount, per_commitment_key);
  82                         }
  83                         @Override public Result_SignatureNoneZ sign_justice_revoked_htlc(byte[] justice_tx, long input, long amount, byte[] per_commitment_key, HTLCOutputInCommitment htlc) {
  84                             return underlying_base.sign_justice_revoked_htlc(justice_tx, input, amount, per_commitment_key, htlc);
  85                         }
  86                         @Override public Result_SignatureNoneZ sign_counterparty_htlc_transaction(byte[] htlc_tx, long input, long amount, byte[] per_commitment_point, HTLCOutputInCommitment htlc) {
  87                             return underlying_base.sign_counterparty_htlc_transaction(htlc_tx, input, amount, per_commitment_point, htlc);
  88                         }
  89                         @Override public Result_SignatureNoneZ sign_closing_transaction(ClosingTransaction closing_tx) {
  90                             return underlying_base.sign_closing_transaction(closing_tx);
  91                         }
  92                         @Override public Result_C2Tuple_SignatureSignatureZNoneZ sign_channel_announcement(UnsignedChannelAnnouncement msg) {
  93                             return underlying_base.sign_channel_announcement(msg);
  94                         }
  95                         @Override public void ready_channel(ChannelTransactionParameters params) {
  96                             underlying_base.ready_channel(params);
  97                         }
  98                     };
  99                     Sign.SignInterface si = new Sign.SignInterface() {
 100                         @Override
 101                         public byte[] write() {
 102                             return underlying_ck.write();
 103                         }
 104                     };
 105                     Sign resp = Sign.new_impl(si, bsi, underlying_base.get_pubkeys());
 106                     must_free_objs.add(new WeakReference<>(si));
 107                     must_free_objs.add(new WeakReference<>(bsi));
 108                     must_free_objs.add(new WeakReference<>(resp));
 109                     must_free_objs.add(new WeakReference<>(underlying_base));
 110                     must_free_objs.add(new WeakReference<>(underlying_ck));
 111                     return resp;
 112                 }
 113
 114                 @Override
 115                 public byte[] get_secure_random_bytes() {
 116                     return underlying_if.get_secure_random_bytes();
 117                 }
 118
 119                 @Override
 120                 public Result_SignDecodeErrorZ read_chan_signer(byte[] reader) {
 121                     return underlying_if.read_chan_signer(reader);
 122                 }
 123
 124                 @Override
 125                 public Result_RecoverableSignatureNoneZ sign_invoice(byte[] hrp_bytes, UInt5[] invoice_data, Recipient receipient) {
 126                     return underlying_if.sign_invoice(hrp_bytes, invoice_data, receipient);
 127                 }
 128
 129                 @Override
 130                 public byte[] get_inbound_payment_key_material() {
 131                     return underlying_if.get_inbound_payment_key_material();
 132                 }
 133             });
 134         }
 135
 136         Watch get_manual_watch() {
 137             Watch.WatchInterface watch_impl = new Watch.WatchInterface() {
 138                 public Result_NoneChannelMonitorUpdateErrZ watch_channel(OutPoint funding_txo, ChannelMonitor monitor) {
 139                     synchronized (monitors) {
 140                         assert monitors.put(Arrays.toString(funding_txo.get_txid()), monitor) == null;
 141                     }
 142                     return Result_NoneChannelMonitorUpdateErrZ.ok();
 143                 }
 144
 145                 public Result_NoneChannelMonitorUpdateErrZ update_channel(OutPoint funding_txo, ChannelMonitorUpdate update) {
 146                     synchronized (monitors) {
 147                         String txid = Arrays.toString(funding_txo.get_txid());
 148                         assert monitors.containsKey(txid);
 149                         Result_NoneNoneZ update_res = monitors.get(txid).update_monitor(update, tx_broadcaster, fee_estimator, logger);
 150                         assert update_res instanceof Result_NoneNoneZ.Result_NoneNoneZ_OK;
 151                     }
 152                     return Result_NoneChannelMonitorUpdateErrZ.ok();
 153                 }
 154
 155                 @Override
 156                 public ThreeTuple_OutPointCVec_MonitorEventZPublicKeyZ[] release_pending_monitor_events() {
 157                     synchronized (monitors) {
 158                         assert monitors.size() <= 1;
 159                         for (ChannelMonitor mon : monitors.values()) {
 160                             ThreeTuple_OutPointCVec_MonitorEventZPublicKeyZ[] res = new ThreeTuple_OutPointCVec_MonitorEventZPublicKeyZ[1];
 161                             res[0] = ThreeTuple_OutPointCVec_MonitorEventZPublicKeyZ.of(mon.get_funding_txo().get_a(), mon.get_and_clear_pending_monitor_events(), mon.get_counterparty_node_id());
 162                             return res;
 163                         }
 164                     }
 165                     return new ThreeTuple_OutPointCVec_MonitorEventZPublicKeyZ[0];
 166                 }
 167             };
 168             Watch watch = Watch.new_impl(watch_impl);
 169             must_free_objs.add(new WeakReference<>(watch_impl));
 170             must_free_objs.add(new WeakReference<>(watch));
 171             return watch;
 172         }
 173
 174         UserConfig get_config() {
 175             ChannelHandshakeConfig channel_config = ChannelHandshakeConfig.with_default();
 176             channel_config.set_announced_channel(true);
 177             UserConfig config = UserConfig.with_default();
 178             config.set_channel_handshake_config(channel_config);
 179             return config;
 180         }
 181
 182         NioPeerHandler nio_peer_handler;
 183         short nio_port;
 184         final byte seed;
 185         final Logger logger;
 186         final FeeEstimator fee_estimator;
 187         final BroadcasterInterface tx_broadcaster;
 188         final KeysManager explicit_keys_manager;
 189         final KeysInterface keys_interface;
 190         final ChainMonitor chain_monitor;
 191         NetworkGraph router;
 192         P2PGossipSync route_handler;
 193         final Watch chain_watch;
 194         final HashSet<String> filter_additions;
 195         Option_FilterZ filter;
 196         ChannelManager chan_manager;
 197         PeerManager peer_manager;
 198         final HashMap<String, ChannelMonitor> monitors; // Wow I forgot just how terrible Java is - we can't put a byte array here.
 199         byte[] node_id;
 200         byte[] connected_peer_node_id = null;
 201         final LinkedList<byte[]> broadcast_set = new LinkedList<>();
 202         final LinkedList<Event> pending_manager_events = new LinkedList<>();
 203         private final CustomMessageHandler custom_message_handler;
 204         final LinkedList<byte[]> received_custom_messages = new LinkedList<>();
 205         final LinkedList<byte[]> custom_messages_to_send = new LinkedList<>();
 206         ChannelManagerConstructor constructor = null;
 207         InvoicePayer payer = null;
 208         GcCheck obj = new GcCheck();
 209
 210         private ChannelMonitor test_mon_roundtrip(OutPoint expected_id, byte[] data) {
 211             // Because get_funding_txo() returns an OutPoint in a tuple that is a reference to an OutPoint inside the
 212             // ChannelMonitor, its a good test to ensure that the OutPoint isn't freed (or is cloned) before the
 213             // ChannelMonitor is. This used to be broken.
 214             Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ roundtrip_monitor = UtilMethods.C2Tuple_BlockHashChannelMonitorZ_read(data, keys_interface);
 215             assert roundtrip_monitor instanceof Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK;
 216             must_free_objs.add(new WeakReference<>(roundtrip_monitor));
 217             TwoTuple_OutPointScriptZ funding_txo = ((Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK) roundtrip_monitor).res.get_b().get_funding_txo();
 218             must_free_objs.add(new WeakReference<>(funding_txo));
 219             System.gc(); System.runFinalization(); // Give the GC a chance to run.
 220             assert Arrays.equals(funding_txo.get_a().get_txid(), expected_id.get_txid());
 221             assert funding_txo.get_a().get_index() == expected_id.get_index();
 222             Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ roundtrip_two = UtilMethods.C2Tuple_BlockHashChannelMonitorZ_read(data, keys_interface);
 223             assert roundtrip_two instanceof Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK;
 224             must_free_objs.add(new WeakReference<>(((Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK) roundtrip_two).res.get_b()));
 225             must_free_objs.add(new WeakReference<>(((Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK) roundtrip_two).res));
 226             must_free_objs.add(new WeakReference<>(roundtrip_two));
 227             return ((Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK) roundtrip_two).res.get_b();
 228         }
 229
 230         private Peer(Object _dummy, byte seed) {
 231             logger = Logger.new_impl((org.ldk.structs.Record arg)->{
 232                 if (arg.get_level() == Level.LDKLevel_Error)
 233                     System.err.println(seed + ": " + arg.get_module_path() + " - " + arg.get_args());
 234                 else
 235                     System.out.println(seed + ": " + arg.get_module_path() + " - " + arg.get_args());
 236             });
 237             fee_estimator = FeeEstimator.new_impl((confirmation_target -> 253));
 238             tx_broadcaster = BroadcasterInterface.new_impl(tx -> {
 239                 synchronized (broadcast_set) {
 240                     broadcast_set.add(tx);
 241                     broadcast_set.notifyAll();
 242                 }
 243             });
 244             monitors = new HashMap<>();
 245             this.seed = seed;
 246             Persist persister = Persist.new_impl(new Persist.PersistInterface() {
 247                 @Override
 248                 public Result_NoneChannelMonitorUpdateErrZ persist_new_channel(OutPoint id, ChannelMonitor data, MonitorUpdateId update_id) {
 249                     synchronized (monitors) {
 250                         String key = Arrays.toString(id.to_channel_id());
 251                         ChannelMonitor res = test_mon_roundtrip(id, data.write());
 252                         assert monitors.put(key, res) == null;
 253                     }
 254                     return Result_NoneChannelMonitorUpdateErrZ.ok();
 255                 }
 256
 257                 @Override
 258                 public Result_NoneChannelMonitorUpdateErrZ update_persisted_channel(OutPoint id, ChannelMonitorUpdate update, ChannelMonitor data, MonitorUpdateId update_id) {
 259                     synchronized (monitors) {
 260                         String key = Arrays.toString(id.to_channel_id());
 261                         ChannelMonitor res = test_mon_roundtrip(id, data.write());
 262                         // Note that we use a serialization-roundtrip copy of data here, not the original, as this can
 263                         // expose the JVM JIT bug where it finalize()s things still being called.
 264                         assert monitors.put(key, res) != null;
 265                     }
 266                     return Result_NoneChannelMonitorUpdateErrZ.ok();
 267                 }
 268             });
 269
 270             filter_additions = new HashSet<>();
 271             if (use_filter) {
 272                 this.filter = Option_FilterZ.some(Filter.new_impl(new Filter.FilterInterface() {
 273                     @Override public void register_tx(byte[] txid, byte[] script_pubkey) {
 274                         filter_additions.add(Arrays.toString(txid));
 275                     }
 276                     @Override public void register_output(WatchedOutput output) {
 277                         filter_additions.add(Arrays.toString(output.get_outpoint().get_txid()) + ":" + output.get_outpoint().get_index());
 278                     }
 279                 }));
 280             } else {
 281                 this.filter = Option_FilterZ.none();
 282             }
 283
 284             if (use_manual_watch) {
 285                 chain_watch = get_manual_watch();
 286                 chain_monitor = null;
 287             } else {
 288                 chain_monitor = ChainMonitor.of(filter, tx_broadcaster, logger, fee_estimator, persister);
 289                 chain_watch = chain_monitor.as_Watch();
 290             }
 291
 292             byte[] key_seed = new byte[32];
 293             for (byte i = 0; i < 32; i++) {
 294                 key_seed[i] = (byte) (i ^ seed);
 295             }
 296             KeysManager keys = KeysManager.of(key_seed, System.currentTimeMillis() / 1000, (int) (System.currentTimeMillis() * 1000));
 297             if (use_km_wrapper) {
 298                 this.keys_interface = manual_keysif(keys.as_KeysInterface());
 299                 this.explicit_keys_manager = null;
 300             } else {
 301                 this.keys_interface = keys.as_KeysInterface();
 302                 this.explicit_keys_manager = keys;
 303             }
 304
 305             this.custom_message_handler = CustomMessageHandler.new_impl(new CustomMessageHandler.CustomMessageHandlerInterface() {
 306                 @Override
 307                 public Result_NoneLightningErrorZ handle_custom_message(Type msg, byte[] sender_node_id) {
 308                     synchronized (received_custom_messages) {
 309                         received_custom_messages.add(msg.write());
 310                         received_custom_messages.notifyAll();
 311                     }
 312                     return Result_NoneLightningErrorZ.ok();
 313                 }
 314
 315                 @Override
 316                 public TwoTuple_PublicKeyTypeZ[] get_and_clear_pending_msg() {
 317                     byte[][] bytes;
 318                     synchronized (custom_messages_to_send) {
 319                         bytes = custom_messages_to_send.toArray(new byte[0][0]);
 320                         custom_messages_to_send.clear();
 321                     }
 322                     TwoTuple_PublicKeyTypeZ[] ret = new TwoTuple_PublicKeyTypeZ[bytes.length];
 323                     for (int i = 0; i < bytes.length; i++) {
 324                         final int msg_idx = i;
 325                         ret[i] = TwoTuple_PublicKeyTypeZ.of(connected_peer_node_id, Type.new_impl(new Type.TypeInterface() {
 326                             @Override public short type_id() { return 4096; }
 327                             @Override public String debug_str() { return "Custom Java Message"; }
 328                             @Override public byte[] write() { return bytes[msg_idx]; }
 329                         }));
 330                     }
 331                     return ret;
 332                 }
 333             }, (message_type, buffer) -> {
 334                 assert message_type == 4096;
 335                 return Result_COption_TypeZDecodeErrorZ.ok(Option_TypeZ.some(Type.new_impl(new Type.TypeInterface() {
 336                     @Override public short type_id() { return 4096; }
 337                     @Override public String debug_str() { return "Custom Java-Decoded Message"; }
 338                     @Override public byte[] write() { return buffer; }
 339                 })));
 340             });
 341         }
 342         private void bind_nio() {
 343             if (!use_nio_peer_handler) return;
 344             if (use_chan_manager_constructor) {
 345                 this.nio_peer_handler = this.constructor.nio_peer_handler;
 346             } else {
 347                 try { this.nio_peer_handler = new NioPeerHandler(peer_manager); } catch (IOException e) { assert false; }
 348             }
 349             for (short i = 10_000; true; i++) {
 350                 try {
 351                     nio_peer_handler.bind_listener(new InetSocketAddress("127.0.0.1", i));
 352                     nio_port = i;
 353                     break;
 354                 } catch (IOException e) { assert i < 10_500; }
 355             }
 356         }
 357         private void setup_route_handler() {
 358             this.route_handler = P2PGossipSync.of(this.router,
 359                 Option_AccessZ.some(Access.new_impl((genesis_hash, short_channel_id) -> Result_TxOutAccessErrorZ.ok(gossip_txout))), this.logger);
 360         }
 361         Peer(byte seed) {
 362             this(null, seed);
 363             this.router = NetworkGraph.of(new byte[32], this.logger);
 364             this.setup_route_handler();
 365
 366             if (use_chan_manager_constructor) {
 367                 if (use_ignore_handler) {
 368                     this.constructor = new ChannelManagerConstructor(Network.LDKNetwork_Bitcoin, get_config(), new byte[32], 0,
 369                                                         this.keys_interface, this.fee_estimator, this.chain_monitor, null, this.tx_broadcaster, this.logger);
 370                 } else {
 371                     this.constructor = new ChannelManagerConstructor(Network.LDKNetwork_Bitcoin, get_config(), new byte[32], 0,
 372                                                         this.keys_interface, this.fee_estimator, this.chain_monitor, this.router, this.tx_broadcaster, this.logger);
 373                 }
 374                 ProbabilisticScoringParameters params = ProbabilisticScoringParameters.with_default();
 375                 ProbabilisticScorer default_scorer = ProbabilisticScorer.of(params, this.router, this.logger);
 376                 Result_ProbabilisticScorerDecodeErrorZ score_res = ProbabilisticScorer.read(default_scorer.write(), params, this.router, this.logger);
 377                 assert score_res.is_ok();
 378                 Score score = ((Result_ProbabilisticScorerDecodeErrorZ.Result_ProbabilisticScorerDecodeErrorZ_OK) score_res).res.as_Score();
 379                 MultiThreadedLockableScore scorer = null;
 380                 if (use_invoice_payer) { scorer = MultiThreadedLockableScore.of(score); }
 381                 constructor.chain_sync_completed(new ChannelManagerConstructor.EventHandler() {
 382                     @Override public void handle_event(Event event) {
 383                         synchronized (pending_manager_events) {
 384                             pending_manager_events.add(event);
 385                             pending_manager_events.notifyAll();
 386                         }
 387                     }
 388                     @Override public void persist_manager(byte[] channel_manager_bytes) { assert channel_manager_bytes.length > 1; }
 389                     @Override public void persist_network_graph(byte[] graph_bytes) { assert graph_bytes.length > 1; }
 390                     @Override public void persist_scorer(byte[] scorer_bytes) { assert scorer_bytes.length > 1; }
 391                 }, scorer);
 392                 this.chan_manager = constructor.channel_manager;
 393                 this.peer_manager = constructor.peer_manager;
 394                 this.payer = constructor.payer;
 395                 must_free_objs.add(new WeakReference<>(this.chan_manager));
 396             } else {
 397                 ChainParameters params = ChainParameters.of(Network.LDKNetwork_Bitcoin, BestBlock.of(new byte[32], 0));
 398                 this.chan_manager = ChannelManager.of(this.fee_estimator, chain_watch, tx_broadcaster, logger, this.keys_interface, get_config(), params);
 399                 byte[] random_data = keys_interface.get_secure_random_bytes();
 400                 Result_SecretKeyNoneZ node_secret = keys_interface.get_node_secret(Recipient.LDKRecipient_Node);
 401                 assert node_secret.is_ok();
 402                 this.peer_manager = PeerManager.of(chan_manager.as_ChannelMessageHandler(), route_handler.as_RoutingMessageHandler(),
 403                         IgnoringMessageHandler.of().as_OnionMessageHandler(),
 404                         ((Result_SecretKeyNoneZ.Result_SecretKeyNoneZ_OK)node_secret).res, System.currentTimeMillis() / 1000,
 405                         random_data, logger, this.custom_message_handler);
 406                 if (use_invoice_payer) {
 407                     this.payer = InvoicePayer.of(this.chan_manager.as_Payer(), Router.new_impl(new Router.RouterInterface() {
 408                         @Override public void notify_payment_path_failed(RouteHop[] path, long short_channel_id) {}
 409                         @Override public void notify_payment_path_successful(RouteHop[] path) {}
 410                         @Override public void notify_payment_probe_successful(RouteHop[] path) {}
 411                         @Override public void notify_payment_probe_failed(RouteHop[] path, long short_channel_id) {}
 412
 413                         @Override
 414                         public Result_RouteLightningErrorZ find_route(byte[] payer, RouteParameters params, byte[] payment_hash, ChannelDetails[] first_hops, InFlightHtlcs inflight_htlcs) {
 415                             while (true) {
 416                                 try (ReadOnlyNetworkGraph graph = router.read_only()) {
 417                                     assert graph.channel(424242) == null;
 418                                     long[] channels = graph.list_channels();
 419                                     if (channels.length != 1) {
 420                                         // If we're using a NioPeerHandler, the handling of announcement signatures and
 421                                         // channel broadcasting may be done async, so just wait until the channel shows up.
 422                                         assert use_nio_peer_handler;
 423                                         continue;
 424                                     }
 425                                     ChannelInfo chan = graph.channel(channels[0]);
 426                                     assert Arrays.equals(chan.get_node_one().as_slice(), chan.get_node_one().write());
 427                                     assert Arrays.equals(chan.get_node_one().as_slice(), chan_manager.get_our_node_id()) ||
 428                                             Arrays.equals(chan.get_node_two().as_slice(), chan_manager.get_our_node_id());
 429                                     break;
 430                                 }
 431                             }
 432                             return UtilMethods.find_route(payer, params, router, first_hops, logger, Score.new_impl(new Score.ScoreInterface() {
 433                                 @Override public void payment_path_failed(RouteHop[] path, long scid) {}
 434                                 @Override public long channel_penalty_msat(long short_channel_id, NodeId source, NodeId target, ChannelUsage usage) { return 0; }
 435                                 @Override public void payment_path_successful(RouteHop[] path) {}
 436                                 @Override public void probe_failed(RouteHop[] path, long short_channel_id) { assert false; }
 437                                 @Override public void probe_successful(RouteHop[] path) { assert false; }
 438                                 @Override public byte[] write() { assert false; return null; }
 439                             }), new byte[32]);
 440                         }
 441                     }), logger, EventHandler.new_impl(new EventHandler.EventHandlerInterface() {
 442                         @Override public void handle_event(Event event) {
 443                             synchronized (pending_manager_events) {
 444                                 pending_manager_events.add(event);
 445                                 pending_manager_events.notifyAll();
 446                             }
 447                         }
 448                     }), Retry.attempts(0));
 449                 }
 450             }
 451
 452             this.node_id = chan_manager.get_our_node_id();
 453             this.filter = null;
 454             bind_nio();
 455             System.gc();
 456         }
 457
 458         Object ptr_to;
 459         Peer(Peer orig) {
 460             this(null, orig.seed);
 461             if (use_chan_manager_constructor) {
 462                 byte[][] monitors = {orig.monitors.values().stream().iterator().next().write()};
 463                 byte[] serialized = orig.chan_manager.write();
 464                 byte[] serialized_router = orig.router.write();
 465                 try {
 466                     Filter filter_nullable = null;
 467                     if (this.filter instanceof Option_FilterZ.Some) {
 468                         filter_nullable = ((Option_FilterZ.Some) this.filter).some;
 469                     }
 470                     if (use_ignore_handler) {
 471                         this.constructor = new ChannelManagerConstructor(serialized, monitors, get_config(),
 472                                 this.keys_interface, this.fee_estimator, this.chain_monitor, filter_nullable,
 473                                 null, this.tx_broadcaster, this.logger);
 474                     } else {
 475                         this.constructor = new ChannelManagerConstructor(serialized, monitors, get_config(),
 476                                 this.keys_interface, this.fee_estimator, this.chain_monitor, filter_nullable,
 477                                 serialized_router, this.tx_broadcaster, this.logger);
 478                         try {
 479                             // Test that ChannelManagerConstructor correctly rejects duplicate ChannelMonitors
 480                             byte[][] monitors_dupd = new byte[2][];
 481                             monitors_dupd[0] = monitors[0];
 482                             monitors_dupd[1] = monitors[0];
 483                             ChannelManagerConstructor constr = this.constructor = new ChannelManagerConstructor(serialized, monitors_dupd, get_config(),
 484                                     this.keys_interface, this.fee_estimator, this.chain_monitor, filter_nullable,
 485                                     null, this.tx_broadcaster, this.logger);
 486                             assert false;
 487                         } catch (ChannelManagerConstructor.InvalidSerializedDataException e) {}
 488                     }
 489                     this.router = this.constructor.net_graph;
 490                     setup_route_handler();
 491                     MultiThreadedLockableScore scorer = null;
 492                     if (use_invoice_payer) { scorer = MultiThreadedLockableScore.of(ProbabilisticScorer.of(ProbabilisticScoringParameters.with_default(), this.router, this.logger).as_Score()); }
 493                     constructor.chain_sync_completed(new ChannelManagerConstructor.EventHandler() {
 494                         @Override public void handle_event(Event event) {
 495                             synchronized (pending_manager_events) {
 496                                 pending_manager_events.add(event);
 497                                 pending_manager_events.notifyAll();
 498                             }
 499                         }
 500                         @Override public void persist_manager(byte[] channel_manager_bytes) { assert channel_manager_bytes.length > 1; }
 501                         @Override public void persist_network_graph(byte[] graph_bytes) { assert graph_bytes.length > 1; }
 502                         @Override public void persist_scorer(byte[] scorer_bytes) { assert scorer_bytes.length > 1; }
 503                     }, scorer);
 504                     this.chan_manager = constructor.channel_manager;
 505                     this.payer = constructor.payer;
 506                     this.peer_manager = constructor.peer_manager;
 507                     must_free_objs.add(new WeakReference<>(this.chan_manager));
 508                     // If we are using a ChannelManagerConstructor, we may have pending events waiting on the old peer
 509                     // which have been removed from the ChannelManager but which we still need to handle.
 510                     this.pending_manager_events.addAll(orig.pending_manager_events);
 511                     if (!this.pending_manager_events.isEmpty()) {
 512                         // However, this implies cross_reload_ref_pollution
 513                         cross_reload_ref_pollution = true;
 514                     }
 515                 } catch (ChannelManagerConstructor.InvalidSerializedDataException e) {
 516                     assert false;
 517                 }
 518             } else {
 519                 this.router = NetworkGraph.of(new byte[32], this.logger);
 520                 this.setup_route_handler();
 521                 ChannelMonitor[] monitors = new ChannelMonitor[1];
 522                 assert orig.monitors.size() == 1;
 523                 if (!break_cross_peer_refs) {
 524                     monitors[0] = orig.monitors.values().stream().iterator().next();
 525                 } else {
 526                     byte[] serialized = orig.monitors.values().stream().iterator().next().write();
 527                     Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ res =
 528                             UtilMethods.C2Tuple_BlockHashChannelMonitorZ_read(serialized, this.keys_interface);
 529                     assert res instanceof Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK;
 530                     monitors[0] = ((Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK) res).res.get_b();
 531                 }
 532                 byte[] serialized = orig.chan_manager.write();
 533                 Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ read_res =
 534                         UtilMethods.C2Tuple_BlockHashChannelManagerZ_read(serialized, this.keys_interface, this.fee_estimator, this.chain_watch, this.tx_broadcaster, this.logger, get_config(), monitors);
 535                 assert read_res instanceof Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ.Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ_OK;
 536                 this.chan_manager = ((Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ.Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ_OK) read_res).res.get_b();
 537                 this.chain_watch.watch_channel(monitors[0].get_funding_txo().get_a(), monitors[0]);
 538                 byte[] random_data = keys_interface.get_secure_random_bytes();
 539                 Result_SecretKeyNoneZ node_secret = keys_interface.get_node_secret(Recipient.LDKRecipient_Node);
 540                 assert node_secret.is_ok();
 541                 this.peer_manager = PeerManager.of(chan_manager.as_ChannelMessageHandler(), route_handler.as_RoutingMessageHandler(),
 542                         IgnoringMessageHandler.of().as_OnionMessageHandler(),
 543                         ((Result_SecretKeyNoneZ.Result_SecretKeyNoneZ_OK)node_secret).res, System.currentTimeMillis() / 1000,
 544                         random_data, logger, this.custom_message_handler);
 545                 if (!break_cross_peer_refs && (use_manual_watch || use_km_wrapper)) {
 546                     // When we pass monitors[0] into chain_watch.watch_channel we create a reference from the new Peer to a
 547                     // field in the old peer, preventing freeing of the original Peer until the new Peer is freed. Thus, we
 548                     // shouldn't bother waiting for the original to be freed later on.
 549                     cross_reload_ref_pollution = true;
 550                 }
 551                 if (use_invoice_payer) {
 552                     this.payer = InvoicePayer.of(this.chan_manager.as_Payer(), Router.new_impl(new Router.RouterInterface() {
 553                         @Override public void notify_payment_path_failed(RouteHop[] path, long short_channel_id) {}
 554                         @Override public void notify_payment_path_successful(RouteHop[] path) {}
 555                         @Override public void notify_payment_probe_successful(RouteHop[] path) {}
 556                         @Override public void notify_payment_probe_failed(RouteHop[] path, long short_channel_id) {}
 557
 558                         @Override
 559                         public Result_RouteLightningErrorZ find_route(byte[] payer, RouteParameters route_params, byte[] payment_hash, ChannelDetails[] first_hops, InFlightHtlcs inflight_htlcs) {
 560                             return UtilMethods.find_route(payer, route_params, router, first_hops, logger, Score.new_impl(new Score.ScoreInterface() {
 561                                 @Override public long channel_penalty_msat(long short_channel_id, NodeId source, NodeId target, ChannelUsage usage) { return 0; }
 562                                 @Override public void payment_path_failed(RouteHop[] path, long scid) {}
 563                                 @Override public void payment_path_successful(RouteHop[] path) {}
 564                                 @Override public void probe_failed(RouteHop[] path, long short_channel_id) { assert false; }
 565                                 @Override public void probe_successful(RouteHop[] path) { assert false; }
 566                                 @Override public byte[] write() { assert false; return null; }
 567                             }), new byte[32]);
 568                         }
 569                     }), logger, EventHandler.new_impl(new EventHandler.EventHandlerInterface() {
 570                         @Override public void handle_event(Event event) {
 571                             synchronized (pending_manager_events) {
 572                                 pending_manager_events.add(event);
 573                                 pending_manager_events.notifyAll();
 574                             }
 575                         }
 576                     }), Retry.attempts(0));
 577                 }
 578             }
 579             this.node_id = chan_manager.get_our_node_id();
 580             bind_nio();
 581
 582             if (cross_reload_ref_pollution) {
 583                 // This really, really needs to be handled at the bindings layer, but its rather complicated -
 584                 // ChannelSigners can be cloned and passed around without java being involved, resulting in them being
 585                 // owned by both one or more ChannelMonitors and a ChannelManager, with only one having proper pointers
 586                 // to the ChannelSigner. Ideally, the ChannelSigner would have a global reference to the Java
 587                 // implementation class, but that results in circular references. Instead, we need some ability to,
 588                 // while cloning ChannelSigners, add new references in the calling Java struct (ie ChannelMonitor) to
 589                 // the ChannelSigner.
 590                 this.ptr_to = orig.chan_manager;
 591             }
 592             this.filter = null;
 593         }
 594
 595         TwoTuple_TxidCVec_C2Tuple_u32TxOutZZZ[] connect_block(Block b, int height, long expected_monitor_update_len) {
 596             byte[] header = Arrays.copyOfRange(b.bitcoinSerialize(), 0, 80);
 597             TwoTuple_usizeTransactionZ[] txn;
 598             if (b.hasTransactions()) {
 599                 assert b.getTransactions().size() == 1;
 600                 TwoTuple_usizeTransactionZ txp = TwoTuple_usizeTransactionZ.of((long) 0, b.getTransactions().get(0).bitcoinSerialize());
 601                 txn = new TwoTuple_usizeTransactionZ[]{txp};
 602             } else
 603                 txn = new TwoTuple_usizeTransactionZ[0];
 604             if (chain_monitor != null) {
 605                 chan_manager.as_Listen().block_connected(b.bitcoinSerialize(), height);
 606                 chain_monitor.as_Listen().block_connected(b.bitcoinSerialize(), height);
 607             } else {
 608                 chan_manager.as_Confirm().transactions_confirmed(header, txn, height);
 609                 chan_manager.as_Confirm().best_block_updated(header, height);
 610                 // Connect manually if we aren't using a ChainMonitor and are implementing Watch ourselves
 611                 synchronized (monitors) {
 612                     assert monitors.size() == 1;
 613                     for (ChannelMonitor mon : monitors.values()) {
 614                         TwoTuple_TxidCVec_C2Tuple_u32TxOutZZZ[] ret = mon.block_connected(header, txn, height, tx_broadcaster, fee_estimator, logger);
 615                         assert ret.length == expected_monitor_update_len;
 616                         return ret;
 617                     }
 618                 }
 619             }
 620             return null;
 621         }
 622
 623         Event[] get_monitor_events(int expected_len) {
 624             if (use_chan_manager_constructor) {
 625                 while (true) {
 626                     synchronized (this.pending_manager_events) {
 627                         if (expected_len != 0 && this.pending_manager_events.size() == expected_len) {
 628                             break;
 629                         }
 630                     }
 631                     if (expected_len == 0) {
 632                         try { Thread.sleep(500); } catch (InterruptedException e) { assert false; }
 633                         break;
 634                     } else {
 635                         Thread.yield();
 636                     }
 637                 }
 638                 synchronized (this.pending_manager_events) {
 639                     Event[] res = this.pending_manager_events.toArray(new Event[0]);
 640                     this.pending_manager_events.clear();
 641                     assert res.length == expected_len;
 642                     return res;
 643                 }
 644             } else if (chain_monitor != null) {
 645                 ArrayList<Event> l = new ArrayList<Event>();
 646                 chain_monitor.as_EventsProvider().process_pending_events(EventHandler.new_impl(l::add));
 647                 assert l.size() == expected_len;
 648                 return l.toArray(new Event[0]);
 649             } else {
 650                 synchronized (monitors) {
 651                     assert monitors.size() == 1;
 652                     for (ChannelMonitor mon : monitors.values()) {
 653                         Event[] res = mon.get_and_clear_pending_events();
 654                         assert res.length == expected_len;
 655                         return res;
 656                     }
 657                     return null;
 658                 }
 659             }
 660         }
 661
 662         Event[] get_manager_events(int expected_len, Peer peer1, Peer peer2) {
 663             assert expected_len != 0;
 664             if (!use_nio_peer_handler) {
 665                 maybe_exchange_peer_messages(peer1, peer2);
 666             }
 667             Event[] res = new Event[0];
 668             if (use_chan_manager_constructor) {
 669                 while (res.length < expected_len) {
 670                     synchronized (this.pending_manager_events) {
 671                         if (this.pending_manager_events.size() >= expected_len) {
 672                             res = this.pending_manager_events.toArray(res);
 673                             assert res.length == expected_len;
 674                             this.pending_manager_events.clear();
 675                         }
 676                         if (res.length < expected_len) {
 677                             try { this.pending_manager_events.wait(); } catch (InterruptedException e) { assert false; }
 678                         }
 679                     }
 680                 }
 681             } else {
 682                 ArrayList<Event> l = new ArrayList<Event>();
 683                 while (l.size() < expected_len) {
 684                     Thread.yield();
 685                     if (use_nio_peer_handler) {
 686                         peer1.nio_peer_handler.check_events();
 687                         peer2.nio_peer_handler.check_events();
 688                     }
 689                     chan_manager.as_EventsProvider().process_pending_events(EventHandler.new_impl(l::add));
 690                 }
 691                 return l.toArray(new Event[0]);
 692             }
 693             assert res.length == expected_len;
 694             return res;
 695         }
 696     }
 697
 698     static class DescriptorHolder { SocketDescriptor val; }
 699
 700     boolean running = false;
 701     final LinkedList<Runnable> runqueue = new LinkedList();
 702     boolean ran = false;
 703     Thread t = new Thread(() -> {
 704             while (true) {
 705                 try {
 706                     Runnable r;
 707                     synchronized (runqueue) {
 708                         while (runqueue.isEmpty()) {
 709                             runqueue.wait();
 710                         }
 711                         running = true;
 712                         r = runqueue.pollFirst();
 713                     }
 714                     r.run();
 715                     synchronized (runqueue) {
 716                         running = false;
 717                         runqueue.notifyAll();
 718                     }
 719                 } catch (InterruptedException e) {
 720                     return;
 721                 }
 722             }
 723     });
 724
 725     void maybe_exchange_peer_messages(Peer peer1, Peer peer2) {
 726         if (!use_nio_peer_handler) {
 727             while (true) {
 728                 peer1.peer_manager.process_events();
 729                 peer2.peer_manager.process_events();
 730                 synchronized (runqueue) {
 731                     if (runqueue.isEmpty() && !running) {
 732                         if (ran) {
 733                             ran = false;
 734                             continue;
 735                         } else { break; }
 736                     }
 737                     try { runqueue.wait(); } catch (InterruptedException e) { assert false; }
 738                 }
 739             }
 740         } else if (!use_chan_manager_constructor) {
 741             peer1.nio_peer_handler.check_events();
 742             peer2.nio_peer_handler.check_events();
 743         }
 744     }
 745     void do_read_event(PeerManager pm, SocketDescriptor descriptor, byte[] data) {
 746         if (!t.isAlive()) t.start();
 747         synchronized (runqueue) {
 748             ran = true;
 749             runqueue.add(() -> {
 750                 Result_boolPeerHandleErrorZ res = pm.read_event(descriptor, data);
 751                 assert res instanceof Result_boolPeerHandleErrorZ.Result_boolPeerHandleErrorZ_OK;
 752             });
 753             runqueue.notifyAll();
 754         }
 755         must_free_objs.add(new WeakReference<>(data));
 756     }
 757
 758     void connect_peers(final Peer peer1, final Peer peer2) {
 759         peer2.connected_peer_node_id = peer1.node_id;
 760         peer1.connected_peer_node_id = peer2.node_id;
 761         if (use_nio_peer_handler) {
 762             try {
 763                 peer1.nio_peer_handler.connect(peer2.chan_manager.get_our_node_id(), new InetSocketAddress("127.0.0.1", peer2.nio_port), 100);
 764             } catch (IOException e) { assert false; }
 765             while (peer1.peer_manager.get_peer_node_ids().length == 0 || peer2.peer_manager.get_peer_node_ids().length == 0) {
 766                 Thread.yield();
 767             }
 768         } else {
 769             DescriptorHolder descriptor1 = new DescriptorHolder();
 770             DescriptorHolder descriptor1ref = descriptor1;
 771             SocketDescriptor descriptor2 = SocketDescriptor.new_impl(new SocketDescriptor.SocketDescriptorInterface() {
 772                 @Override
 773                 public long send_data(byte[] data, boolean resume_read) {
 774                     do_read_event(peer1.peer_manager, descriptor1ref.val, data);
 775                     return data.length;
 776                 }
 777
 778                 @Override public void disconnect_socket() { assert false; }
 779                 @Override public boolean eq(SocketDescriptor other_arg) { return other_arg.hash() == 2; }
 780                 @Override public long hash() { return 2; }
 781             });
 782
 783             descriptor1.val = SocketDescriptor.new_impl(new SocketDescriptor.SocketDescriptorInterface() {
 784                 @Override
 785                 public long send_data(byte[] data, boolean resume_read) {
 786                     do_read_event(peer2.peer_manager, descriptor2, data);
 787                     return data.length;
 788                 }
 789
 790                 @Override public void disconnect_socket() { assert false; }
 791                 @Override public boolean eq(SocketDescriptor other_arg) { return other_arg.hash() == 1; }
 792                 @Override public long hash() { return 1; }
 793             });
 794
 795             Result_CVec_u8ZPeerHandleErrorZ conn_res = peer1.peer_manager.new_outbound_connection(peer2.node_id, descriptor1.val, Option_NetAddressZ.none());
 796             assert conn_res instanceof Result_CVec_u8ZPeerHandleErrorZ.Result_CVec_u8ZPeerHandleErrorZ_OK;
 797
 798             Result_NonePeerHandleErrorZ inbound_conn_res = peer2.peer_manager.new_inbound_connection(descriptor2, Option_NetAddressZ.none());
 799             assert inbound_conn_res instanceof Result_NonePeerHandleErrorZ.Result_NonePeerHandleErrorZ_OK;
 800             do_read_event(peer2.peer_manager, descriptor2, ((Result_CVec_u8ZPeerHandleErrorZ.Result_CVec_u8ZPeerHandleErrorZ_OK) conn_res).res);
 801
 802             maybe_exchange_peer_messages(peer1, peer2);
 803         }
 804     }
 805
 806     TestState do_test_message_handler() throws InterruptedException {
 807         Peer peer1 = new Peer((byte) 1);
 808         Peer peer2 = new Peer((byte) 2);
 809
 810         connect_peers(peer1, peer2);
 811
 812         Result__u832APIErrorZ cc_res = peer1.chan_manager.create_channel(peer2.node_id, 100000, 1000, 42, null);
 813         assert cc_res instanceof Result__u832APIErrorZ.Result__u832APIErrorZ_OK;
 814
 815         // Previously, this was a SEGFAULT instead of get_funding_txo() returning null.
 816         ChannelDetails pre_funding_chan = peer1.chan_manager.list_channels()[0];
 817         assert pre_funding_chan.get_funding_txo() == null;
 818
 819         Event[] events = peer1.get_manager_events(1, peer1, peer2);
 820         assert events[0] instanceof Event.FundingGenerationReady;
 821         assert ((Event.FundingGenerationReady) events[0]).channel_value_satoshis == 100000;
 822         assert ((Event.FundingGenerationReady) events[0]).user_channel_id == 42;
 823         byte[] funding_spk = ((Event.FundingGenerationReady) events[0]).output_script;
 824         assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
 825         byte[] chan_id = ((Event.FundingGenerationReady) events[0]).temporary_channel_id;
 826
 827         NetworkParameters bitcoinj_net = NetworkParameters.fromID(NetworkParameters.ID_MAINNET);
 828
 829         Transaction funding = new Transaction(bitcoinj_net);
 830         funding.addInput(new TransactionInput(bitcoinj_net, funding, new byte[0]));
 831         funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
 832         funding.getInput(0).getWitness().setPush(0, new byte[]{0x1});
 833         funding.addOutput(Coin.SATOSHI.multiply(100000), new Script(funding_spk));
 834         Result_NoneAPIErrorZ funding_res = peer1.chan_manager.funding_transaction_generated(chan_id, peer2.node_id, funding.bitcoinSerialize());
 835         assert funding_res instanceof Result_NoneAPIErrorZ.Result_NoneAPIErrorZ_OK;
 836
 837         gossip_txout = new TxOut(100000, funding_spk);
 838
 839         maybe_exchange_peer_messages(peer1, peer2);
 840         synchronized (peer1.broadcast_set) {
 841             while (peer1.broadcast_set.size() != 1) {
 842                 peer1.broadcast_set.wait();
 843             }
 844         }
 845
 846         assert peer1.broadcast_set.size() == 1;
 847         assert Arrays.equals(peer1.broadcast_set.get(0), funding.bitcoinSerialize());
 848         peer1.broadcast_set.clear();
 849
 850         Block b = new Block(bitcoinj_net, 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
 851         peer1.connect_block(b, 1, 0);
 852         peer2.connect_block(b, 1, 0);
 853
 854         for (int height = 2; height < 10; height++) {
 855             b = new Block(bitcoinj_net, 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[0]));
 856             peer1.connect_block(b, height, 0);
 857             peer2.connect_block(b, height, 0);
 858         }
 859
 860         maybe_exchange_peer_messages(peer1, peer2);
 861         while (peer1.chan_manager.list_usable_channels().length != 1 || peer2.chan_manager.list_usable_channels().length != 1)
 862
 863         peer1.chan_manager.list_channels();
 864         ChannelDetails[] peer1_chans = peer1.chan_manager.list_usable_channels();
 865         ChannelDetails[] peer2_chans = peer2.chan_manager.list_usable_channels();
 866         assert peer1_chans.length == 1;
 867         assert peer2_chans.length == 1;
 868         assert peer1_chans[0].get_channel_value_satoshis() == 100000;
 869         assert peer1_chans[0].get_is_usable();
 870         Option_u64Z short_chan_id = peer1_chans[0].get_short_channel_id();
 871         assert short_chan_id instanceof Option_u64Z.Some;
 872         assert ((Option_u64Z.Some)short_chan_id).some == (1L << 40); // 0th output in the 0th transaction in the 1st block
 873         assert Arrays.equals(peer1_chans[0].get_channel_id(), funding.getTxId().getReversedBytes());
 874         assert Arrays.equals(peer2_chans[0].get_channel_id(), funding.getTxId().getReversedBytes());
 875
 876         Result_InvoiceSignOrCreationErrorZ invoice = UtilMethods.create_invoice_from_channelmanager(peer2.chan_manager, peer2.keys_interface, Currency.LDKCurrency_Bitcoin, Option_u64Z.some(10000000), "Invoice Description", 7200);
 877         assert invoice instanceof Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK;
 878         System.out.println("Got invoice: " + ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.to_str());
 879
 880         Result_InvoiceParseOrSemanticErrorZ parsed_invoice = Invoice.from_str(((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.to_str());
 881         assert parsed_invoice instanceof Result_InvoiceParseOrSemanticErrorZ.Result_InvoiceParseOrSemanticErrorZ_OK;
 882         assert Arrays.equals(((Result_InvoiceParseOrSemanticErrorZ.Result_InvoiceParseOrSemanticErrorZ_OK) parsed_invoice).res.payment_hash(), ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.payment_hash());
 883         SignedRawInvoice signed_raw = ((Result_InvoiceParseOrSemanticErrorZ.Result_InvoiceParseOrSemanticErrorZ_OK) parsed_invoice).res.into_signed_raw();
 884         RawInvoice raw_invoice = signed_raw.raw_invoice();
 885         byte[] desc_hash = raw_invoice.signable_hash();
 886         Description raw_invoice_description = raw_invoice.description();
 887         String description_string = raw_invoice_description.into_inner();
 888         assert description_string.equals("Invoice Description");
 889
 890         if (!use_invoice_payer) {
 891             byte[] payment_hash = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.payment_hash();
 892             byte[] payment_secret = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.payment_secret();
 893             byte[] dest_node_id = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.recover_payee_pub_key();
 894             assert Arrays.equals(dest_node_id, peer2.node_id);
 895             InvoiceFeatures invoice_features = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.features();
 896             RouteHint[] route_hints = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.route_hints();
 897
 898             PaymentParameters payee = PaymentParameters.of(peer2.node_id, invoice_features, route_hints, Option_u64Z.none(), 6*24*14, (byte)1, (byte)2, new long[0]);
 899             RouteParameters route_params = RouteParameters.of(payee, 10000000, 42);
 900             Result_RouteLightningErrorZ route_res = UtilMethods.find_route(
 901                     peer1.chan_manager.get_our_node_id(), route_params, peer1.router,
 902                     peer1_chans, peer1.logger, ProbabilisticScorer.of(ProbabilisticScoringParameters.with_default(), peer1.router, peer1.logger).as_Score(), new byte[32]);
 903             assert route_res instanceof Result_RouteLightningErrorZ.Result_RouteLightningErrorZ_OK;
 904             Route route = ((Result_RouteLightningErrorZ.Result_RouteLightningErrorZ_OK) route_res).res;
 905             assert route.get_paths().length == 1;
 906             assert route.get_paths()[0].length == 1;
 907             assert route.get_paths()[0][0].get_fee_msat() == 10000000;
 908
 909             Result_PaymentIdPaymentSendFailureZ payment_res = peer1.chan_manager.send_payment(route, payment_hash, payment_secret);
 910             assert payment_res instanceof Result_PaymentIdPaymentSendFailureZ.Result_PaymentIdPaymentSendFailureZ_OK;
 911
 912             RouteHop[][] hops = new RouteHop[1][1];
 913             byte[] hop_pubkey = new byte[33];
 914             hop_pubkey[0] = 3;
 915             hop_pubkey[1] = 42;
 916             hops[0][0] = RouteHop.of(hop_pubkey, NodeFeatures.known(), 42, ChannelFeatures.known(), 100, 0);
 917             Route r2 = Route.of(hops, payee);
 918             payment_res = peer1.chan_manager.send_payment(r2, payment_hash, payment_secret);
 919             assert payment_res instanceof Result_PaymentIdPaymentSendFailureZ.Result_PaymentIdPaymentSendFailureZ_Err;
 920         } else {
 921             Result_PaymentIdPaymentErrorZ send_res = peer1.payer.pay_invoice(((Result_InvoiceParseOrSemanticErrorZ.Result_InvoiceParseOrSemanticErrorZ_OK) parsed_invoice).res);
 922             assert send_res instanceof Result_PaymentIdPaymentErrorZ.Result_PaymentIdPaymentErrorZ_OK;
 923         }
 924
 925         if (reload_peers) {
 926             if (use_chan_manager_constructor) {
 927                 peer1.constructor.interrupt();
 928                 peer2.constructor.interrupt();
 929             } else if (use_nio_peer_handler) {
 930                 peer1.nio_peer_handler.interrupt();
 931                 peer2.nio_peer_handler.interrupt();
 932             }
 933             WeakReference<Peer> op1 = new WeakReference<Peer>(peer1);
 934             peer1 = new Peer(peer1);
 935             peer2 = new Peer(peer2);
 936             return new TestState(op1, peer1, peer2, b.getHash());
 937         }
 938         return new TestState(null, peer1, peer2, b.getHash());
 939     }
 940
 941     boolean cross_reload_ref_pollution = false;
 942     class TestState {
 943         private final WeakReference<Peer> ref_block;
 944         private final Peer peer1;
 945         private final Peer peer2;
 946         public Sha256Hash best_blockhash;
 947
 948         public TestState(WeakReference<Peer> ref_block, Peer peer1, Peer peer2, Sha256Hash best_blockhash) {
 949             this.ref_block = ref_block;
 950             this.peer1 = peer1;
 951             this.peer2 = peer2;
 952             this.best_blockhash = best_blockhash;
 953         }
 954     }
 955     void do_test_message_handler_b(TestState state) throws InterruptedException {
 956         GcCheck obj = new GcCheck();
 957         if (state.ref_block != null) {
 958             // Ensure the original peers get freed before we move on. Note that we have to be in a different function
 959             // scope to do so as the (at least current OpenJDK) JRE won't release anything created in the same scope.
 960             while (!cross_reload_ref_pollution && state.ref_block.get() != null) {
 961                 System.gc();
 962                 System.runFinalization();
 963             }
 964             connect_peers(state.peer1, state.peer2);
 965         }
 966
 967         Event[] events = state.peer2.get_manager_events(1, state.peer1, state.peer2);
 968         assert events[0] instanceof Event.PendingHTLCsForwardable;
 969         state.peer2.chan_manager.process_pending_htlc_forwards();
 970
 971         events = state.peer2.get_manager_events(1, state.peer1, state.peer2);
 972         assert events[0] instanceof Event.PaymentReceived;
 973         assert ((Event.PaymentReceived)events[0]).purpose instanceof PaymentPurpose.InvoicePayment;
 974         byte[] payment_preimage = ((PaymentPurpose.InvoicePayment)((Event.PaymentReceived)events[0]).purpose).payment_preimage;
 975         assert !Arrays.equals(payment_preimage, new byte[32]);
 976         state.peer2.chan_manager.claim_funds(payment_preimage);
 977
 978         events = state.peer2.get_manager_events(1, state.peer1, state.peer2);
 979         assert events[0] instanceof Event.PaymentClaimed;
 980         assert ((Event.PaymentClaimed)events[0]).purpose instanceof PaymentPurpose.InvoicePayment;
 981         payment_preimage = ((PaymentPurpose.InvoicePayment)((Event.PaymentClaimed)events[0]).purpose).payment_preimage;
 982         assert !Arrays.equals(payment_preimage, new byte[32]);
 983
 984         events = state.peer1.get_manager_events(2, state.peer1, state.peer2);
 985         assert events[0] instanceof Event.PaymentSent;
 986         assert Arrays.equals(((Event.PaymentSent) events[0]).payment_preimage, payment_preimage);
 987         assert events[1] instanceof Event.PaymentPathSuccessful;
 988         assert Arrays.equals(((Event.PaymentPathSuccessful) events[1]).payment_hash, ((Event.PaymentSent) events[0]).payment_hash);
 989
 990         if (use_nio_peer_handler) {
 991             // We receive PaymentSent immediately upon receipt of the payment preimage, but we expect to not have an
 992             // HTLC transaction to broadcast below, which requires a bit more time to fully complete the
 993             // commitment-transaction-update dance between both peers.
 994             Thread.sleep(100);
 995         }
 996
 997         if (state.peer1.chain_monitor != null) {
 998             Balance[] peer1_balances = state.peer1.chain_monitor.get_claimable_balances(state.peer1.chan_manager.list_channels());
 999             assert peer1_balances.length == 0;
1000             Balance[] peer2_balances = state.peer2.chain_monitor.get_claimable_balances(state.peer2.chan_manager.list_channels());
1001             assert peer2_balances.length == 0;
1002         }
1003
1004         ChannelDetails[] peer1_chans = state.peer1.chan_manager.list_channels();
1005
1006         if (nice_close) {
1007             Result_NoneAPIErrorZ close_res = state.peer1.chan_manager.close_channel(peer1_chans[0].get_channel_id(), state.peer2.node_id);
1008             assert close_res instanceof Result_NoneAPIErrorZ.Result_NoneAPIErrorZ_OK;
1009             maybe_exchange_peer_messages(state.peer1, state.peer2);
1010             synchronized (state.peer1.broadcast_set) {
1011                 while (state.peer1.broadcast_set.size() != 1) state.peer1.broadcast_set.wait();
1012             }
1013             synchronized (state.peer2.broadcast_set) {
1014                 while (state.peer2.broadcast_set.size() != 1) state.peer2.broadcast_set.wait();
1015             }
1016         } else {
1017             state.peer1.chan_manager.force_close_all_channels_broadcasting_latest_txn();
1018             maybe_exchange_peer_messages(state.peer1, state.peer2);
1019             synchronized (state.peer1.broadcast_set) {
1020                 while (state.peer1.broadcast_set.size() != 1) state.peer1.broadcast_set.wait();
1021             }
1022             synchronized (state.peer2.broadcast_set) {
1023                 while (state.peer2.broadcast_set.size() != 1) state.peer2.broadcast_set.wait();
1024             }
1025         }
1026
1027         assert state.peer1.broadcast_set.size() == 1;
1028         assert state.peer2.broadcast_set.size() == 1;
1029
1030         events = state.peer2.get_manager_events(1, state.peer1, state.peer2);
1031         assert events[0] instanceof Event.ChannelClosed;
1032         events = state.peer1.get_manager_events(1, state.peer1, state.peer2);
1033         assert events[0] instanceof Event.ChannelClosed;
1034
1035         if (state.peer1.chain_monitor != null) {
1036             Balance[] peer1_balances = state.peer1.chain_monitor.get_claimable_balances(state.peer1.chan_manager.list_channels());
1037             assert peer1_balances.length == 1;
1038             for (Balance bal : peer1_balances) {
1039                 assert bal instanceof Balance.ClaimableOnChannelClose;
1040                 long expected_tx_fee = 183;
1041                 assert ((Balance.ClaimableOnChannelClose) bal).claimable_amount_satoshis == 100000 - 1 - 10000 - expected_tx_fee;
1042             }
1043             Balance[] peer2_balances = state.peer2.chain_monitor.get_claimable_balances(state.peer2.chan_manager.list_channels());
1044             assert peer2_balances.length == 1;
1045             for (Balance bal : peer2_balances) {
1046                 assert bal instanceof Balance.ClaimableOnChannelClose;
1047                 assert ((Balance.ClaimableOnChannelClose) bal).claimable_amount_satoshis == 10000 + 1;
1048             }
1049         }
1050
1051         if (!nice_close) {
1052             NetworkParameters bitcoinj_net = NetworkParameters.fromID(NetworkParameters.ID_MAINNET);
1053             Transaction tx = new Transaction(bitcoinj_net, state.peer1.broadcast_set.getFirst());
1054             Block b = new Block(bitcoinj_net, 2, state.best_blockhash, Sha256Hash.ZERO_HASH, 42, 0, 0,
1055                     Arrays.asList(new Transaction[]{tx}));
1056             TwoTuple_TxidCVec_C2Tuple_u32TxOutZZZ[] watch_outputs = state.peer2.connect_block(b, 10, 1);
1057             if (watch_outputs != null) { // We only process watch_outputs manually when we use a manually-build Watch impl
1058                 assert watch_outputs.length == 1;
1059                 assert Arrays.equals(watch_outputs[0].get_a(), tx.getTxId().getReversedBytes());
1060                 assert watch_outputs[0].get_b().length == 2;
1061                 assert watch_outputs[0].get_b()[0].get_a() == 0;
1062                 assert watch_outputs[0].get_b()[1].get_a() == 1;
1063             }
1064
1065             for (int i = 11; i < 21; i++) {
1066                 b = new Block(bitcoinj_net, 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, new ArrayList<>());
1067                 state.peer2.connect_block(b, i, 0);
1068             }
1069
1070             Event[] broadcastable_event = state.peer2.get_monitor_events(1);
1071             for (ChannelMonitor mon : state.peer2.monitors.values()) {
1072                 // This used to be buggy and double-free, so go ahead and fetch them!
1073                 byte[][] txn = mon.get_latest_holder_commitment_txn(state.peer2.logger);
1074             }
1075             assert broadcastable_event.length == 1;
1076             assert broadcastable_event[0] instanceof Event.SpendableOutputs;
1077             if (state.peer2.explicit_keys_manager != null) {
1078                 TxOut[] additional_outputs = new TxOut[]{new TxOut(420, new byte[]{0x42})};
1079                 Result_TransactionNoneZ tx_res = state.peer2.explicit_keys_manager.spend_spendable_outputs(((Event.SpendableOutputs) broadcastable_event[0]).outputs, additional_outputs, new byte[]{0x00}, 253);
1080                 assert tx_res instanceof Result_TransactionNoneZ.Result_TransactionNoneZ_OK;
1081                 Transaction built_tx = new Transaction(bitcoinj_net, ((Result_TransactionNoneZ.Result_TransactionNoneZ_OK) tx_res).res);
1082                 assert built_tx.getOutputs().size() == 2;
1083                 assert Arrays.equals(built_tx.getOutput(1).getScriptBytes(), new byte[]{0x00});
1084                 assert Arrays.equals(built_tx.getOutput(0).getScriptBytes(), new byte[]{0x42});
1085                 assert built_tx.getOutput(0).getValue().value == 420;
1086             }
1087         }
1088
1089         // Test exchanging a custom message (note that ChannelManagerConstructor) always loads an IgnorimgMessageHandler
1090         // so we cannot exchange custom messages with it
1091         if (!use_chan_manager_constructor) {
1092             byte[] custom_message_bytes = new byte[]{0x42, 0x44, 0x43, 0x00};
1093             synchronized(state.peer1.custom_messages_to_send) {
1094                 state.peer1.custom_messages_to_send.add(custom_message_bytes);
1095             }
1096             state.peer1.peer_manager.process_events();
1097             synchronized (state.peer2.received_custom_messages) {
1098                 while (true) {
1099                     if (state.peer2.received_custom_messages.isEmpty()) {
1100                         state.peer2.received_custom_messages.wait();
1101                         continue;
1102                     }
1103                     assert state.peer2.received_custom_messages.size() == 1;
1104                     assert Arrays.equals(state.peer2.received_custom_messages.get(0), custom_message_bytes);
1105                     break;
1106                 }
1107             }
1108         }
1109
1110         if (use_nio_peer_handler) {
1111             state.peer1.peer_manager.disconnect_by_node_id(state.peer2.chan_manager.get_our_node_id(), false);
1112             while (state.peer1.peer_manager.get_peer_node_ids().length != 0) Thread.yield();
1113             while (state.peer2.peer_manager.get_peer_node_ids().length != 0) Thread.yield();
1114             state.peer1.nio_peer_handler.interrupt();
1115             state.peer2.nio_peer_handler.interrupt();
1116         }
1117
1118         state.peer1.get_monitor_events(0);
1119         state.peer2.get_monitor_events(0);
1120
1121         if (use_chan_manager_constructor) {
1122             state.peer1.constructor.interrupt();
1123             state.peer2.constructor.interrupt();
1124         }
1125
1126         t.interrupt();
1127
1128         if (state.peer1.router != null)
1129             state.peer1.router.write();
1130
1131         // Construct the only Option_Enum::Variant(OpaqueStruct) we have in the codebase as this used to cause double-frees:
1132         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};
1133         Result_ChannelUpdateDecodeErrorZ upd_msg = ChannelUpdate.read(serd);
1134         assert upd_msg instanceof Result_ChannelUpdateDecodeErrorZ.Result_ChannelUpdateDecodeErrorZ_OK;
1135         assert ((Result_ChannelUpdateDecodeErrorZ.Result_ChannelUpdateDecodeErrorZ_OK) upd_msg).res.get_contents().get_htlc_maximum_msat() == 0xdeadbeef42424242L;
1136         Option_NetworkUpdateZ upd = Option_NetworkUpdateZ.some(NetworkUpdate.channel_update_message(((Result_ChannelUpdateDecodeErrorZ.Result_ChannelUpdateDecodeErrorZ_OK) upd_msg).res));
1137     }
1138
1139     java.util.LinkedList<WeakReference<Object>> must_free_objs = new java.util.LinkedList();
1140     int gc_count = 0;
1141     int gc_exp_count = 0;
1142     class GcCheck {
1143         GcCheck() { gc_exp_count += 1; }
1144         @Override
1145         protected void finalize() throws Throwable {
1146             gc_count += 1;
1147             super.finalize();
1148         }
1149     }
1150 }
1151 public class HumanObjectPeerTest {
1152     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 {
1153         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);
1154         HumanObjectPeerTestInstance.TestState state = instance.do_test_message_handler();
1155         instance.do_test_message_handler_b(state);
1156         return instance;
1157     }
1158     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 {
1159         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);
1160         while (instance.gc_count != instance.gc_exp_count) {
1161             System.gc();
1162             System.runFinalization();
1163         }
1164         for (WeakReference<Object> o : instance.must_free_objs)
1165             assert o.get() == null;
1166     }
1167     public static final int TEST_ITERATIONS = (1 << 9);
1168     public static void do_test_message_handler(IntConsumer statusFunction) throws InterruptedException {
1169         Thread gc_thread = new Thread(() -> {
1170             while (true) {
1171                 System.gc();
1172                 System.runFinalization();
1173                 try { Thread.sleep(0, 1); } catch (InterruptedException e) { break; }
1174             }
1175         }, "Test GC Thread");
1176         gc_thread.start();
1177         for (int i = 0; i < TEST_ITERATIONS; i++) {
1178             boolean nice_close =                   (i & (1 << 0)) != 0;
1179             boolean use_km_wrapper =               (i & (1 << 1)) != 0;
1180             boolean use_manual_watch =             (i & (1 << 2)) != 0;
1181             boolean reload_peers =                 (i & (1 << 3)) != 0;
1182             boolean break_cross_refs =             (i & (1 << 4)) != 0;
1183             boolean use_ignoring_routing_handler = (i & (1 << 5)) != 0;
1184             boolean use_chan_manager_constructor = (i & (1 << 6)) != 0;
1185             boolean use_invoice_payer =            (i & (1 << 7)) != 0;
1186             boolean nio_peer_handler =             (i & (1 << 8)) != 0;
1187             if (break_cross_refs && !reload_peers) {
1188                 // There are no cross refs to break without reloading peers.
1189                 continue;
1190             }
1191             if (use_chan_manager_constructor && (use_manual_watch || !nio_peer_handler)) {
1192                 // ChannelManagerConstructor requires a ChainMonitor as the Watch and creates a NioPeerHandler for us.
1193                 continue;
1194             }
1195             if (!use_chan_manager_constructor && (use_ignoring_routing_handler)) {
1196                 // We rely on the ChannelManagerConstructor to convert null into an IgnoringMessageHandler, so don't
1197                 // try to run with an IgnoringMessageHandler unless we're also using a ChannelManagerConstructor.
1198                 continue;
1199             }
1200             if (use_chan_manager_constructor && use_ignoring_routing_handler && use_invoice_payer) {
1201                 // As documented on ChannelManagerConstructor, if we provide a `null` NetworkGraph (because we want to
1202                 // use an IgnoringMessageHandler), no InvoicePayer will be constructored for us, thus we cannot use an
1203                 // InvoicePayer to send payments in this case.
1204                 continue;
1205             }
1206             statusFunction.accept(i);
1207             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);
1208         }
1209         gc_thread.interrupt();
1210         gc_thread.join();
1211     }
1212     @Test
1213     public void test_message_handler() throws InterruptedException {
1214         do_test_message_handler(i -> System.err.println("Running test with flags " + i));
1215     }
1216
1217     // This is used in the test jar to test the built jar is runnable
1218     public static void main(String[] args) {
1219         try {
1220             do_test_message_handler(i -> System.err.println("Running test with flags " + i));
1221         } catch (Exception e) {
1222             System.err.println("Caught exception:");
1223             System.err.println(e);
1224             System.exit(1);
1225         }
1226     }
1227 }