_ 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.AccessError;
   9 import org.ldk.enums.Currency;
  10 import org.ldk.enums.Network;
  11 import org.ldk.structs.*;
  12 import org.ldk.util.TwoTuple;
  13
  14 import java.io.IOException;
  15 import java.lang.ref.WeakReference;
  16 import java.net.InetSocketAddress;
  17 import java.util.*;
  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
  30     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) {
  31         this.nice_close = nice_close;
  32         this.use_km_wrapper = use_km_wrapper;
  33         this.use_manual_watch = use_manual_watch;
  34         this.reload_peers = reload_peers;
  35         this.break_cross_peer_refs = break_cross_peer_refs;
  36         this.use_nio_peer_handler = use_nio_peer_handler;
  37         this.use_filter = use_filter;
  38         this.use_ignore_handler = use_ignore_handler;
  39         this.use_chan_manager_constructor = use_chan_manager_constructor;
  40     }
  41
  42     class Peer {
  43         KeysInterface manual_keysif(KeysInterface underlying_if) {
  44             return KeysInterface.new_impl(new KeysInterface.KeysInterfaceInterface() {
  45                 @Override public byte[] get_node_secret() { return underlying_if.get_node_secret(); }
  46                 @Override public byte[] get_destination_script() { return underlying_if.get_destination_script(); }
  47                 @Override public ShutdownScript get_shutdown_scriptpubkey() { return underlying_if.get_shutdown_scriptpubkey(); }
  48
  49                 @Override
  50                 public Sign get_channel_signer(boolean inbound, long channel_value_satoshis) {
  51                     Sign underlying_ck = underlying_if.get_channel_signer(inbound, channel_value_satoshis);
  52                     BaseSign underlying_base = underlying_ck.get_base_sign();
  53                     BaseSign.BaseSignInterface bsi = new BaseSign.BaseSignInterface() {
  54                         @Override public byte[] get_per_commitment_point(long idx) {
  55                             return underlying_base.get_per_commitment_point(idx);
  56                         }
  57                         @Override public byte[] release_commitment_secret(long idx) {
  58                             return underlying_base.release_commitment_secret(idx);
  59                         }
  60                         @Override public Result_NoneNoneZ validate_holder_commitment(HolderCommitmentTransaction holder_tx) {
  61                             return underlying_base.validate_holder_commitment(holder_tx);
  62                         }
  63                         @Override public byte[] channel_keys_id() {
  64                             return new byte[32];
  65                         }
  66                         @Override public Result_C2Tuple_SignatureCVec_SignatureZZNoneZ sign_counterparty_commitment(CommitmentTransaction commitment_tx) {
  67                             return underlying_base.sign_counterparty_commitment(commitment_tx);
  68                         }
  69                         @Override public Result_NoneNoneZ validate_counterparty_revocation(long idx, byte[] secret) {
  70                             return underlying_base.validate_counterparty_revocation(idx, secret);
  71                         }
  72                         @Override public Result_C2Tuple_SignatureCVec_SignatureZZNoneZ sign_holder_commitment_and_htlcs(HolderCommitmentTransaction holder_commitment_tx) {
  73                             return underlying_base.sign_holder_commitment_and_htlcs(holder_commitment_tx);
  74                         }
  75                         @Override public Result_SignatureNoneZ sign_justice_revoked_output(byte[] justice_tx, long input, long amount, byte[] per_commitment_key) {
  76                             return underlying_base.sign_justice_revoked_output(justice_tx, input, amount, per_commitment_key);
  77                         }
  78                         @Override public Result_SignatureNoneZ sign_justice_revoked_htlc(byte[] justice_tx, long input, long amount, byte[] per_commitment_key, HTLCOutputInCommitment htlc) {
  79                             return underlying_base.sign_justice_revoked_htlc(justice_tx, input, amount, per_commitment_key, htlc);
  80                         }
  81                         @Override public Result_SignatureNoneZ sign_counterparty_htlc_transaction(byte[] htlc_tx, long input, long amount, byte[] per_commitment_point, HTLCOutputInCommitment htlc) {
  82                             return underlying_base.sign_counterparty_htlc_transaction(htlc_tx, input, amount, per_commitment_point, htlc);
  83                         }
  84                         @Override public Result_SignatureNoneZ sign_closing_transaction(ClosingTransaction closing_tx) {
  85                             return underlying_base.sign_closing_transaction(closing_tx);
  86                         }
  87                         @Override public Result_SignatureNoneZ sign_channel_announcement(UnsignedChannelAnnouncement msg) {
  88                             return underlying_base.sign_channel_announcement(msg);
  89                         }
  90                         @Override public void ready_channel(ChannelTransactionParameters params) {
  91                             underlying_base.ready_channel(params);
  92                         }
  93                     };
  94                     Sign.SignInterface si = new Sign.SignInterface() {
  95                         @Override
  96                         public byte[] write() {
  97                             return underlying_ck.write();
  98                         }
  99                     };
 100                     Sign resp = Sign.new_impl(si, bsi, underlying_base.get_pubkeys());
 101                     must_free_objs.add(new WeakReference<>(si));
 102                     must_free_objs.add(new WeakReference<>(bsi));
 103                     must_free_objs.add(new WeakReference<>(resp));
 104                     must_free_objs.add(new WeakReference<>(underlying_base));
 105                     must_free_objs.add(new WeakReference<>(underlying_ck));
 106                     return resp;
 107                 }
 108
 109                 @Override
 110                 public byte[] get_secure_random_bytes() {
 111                     return underlying_if.get_secure_random_bytes();
 112                 }
 113
 114                 @Override
 115                 public Result_SignDecodeErrorZ read_chan_signer(byte[] reader) {
 116                     return underlying_if.read_chan_signer(reader);
 117                 }
 118
 119                 @Override
 120                 public Result_RecoverableSignatureNoneZ sign_invoice(byte[] invoice_preimage) {
 121                     return underlying_if.sign_invoice(invoice_preimage);
 122                 }
 123             });
 124         }
 125
 126         Watch get_manual_watch() {
 127             Watch.WatchInterface watch_impl = new Watch.WatchInterface() {
 128                 public Result_NoneChannelMonitorUpdateErrZ watch_channel(OutPoint funding_txo, ChannelMonitor monitor) {
 129                     synchronized (monitors) {
 130                         assert monitors.put(Arrays.toString(funding_txo.get_txid()), monitor) == null;
 131                     }
 132                     return Result_NoneChannelMonitorUpdateErrZ.ok();
 133                 }
 134
 135                 public Result_NoneChannelMonitorUpdateErrZ update_channel(OutPoint funding_txo, ChannelMonitorUpdate update) {
 136                     synchronized (monitors) {
 137                         String txid = Arrays.toString(funding_txo.get_txid());
 138                         assert monitors.containsKey(txid);
 139                         Result_NoneMonitorUpdateErrorZ update_res = monitors.get(txid).update_monitor(update, tx_broadcaster, fee_estimator, logger);
 140                         assert update_res instanceof Result_NoneMonitorUpdateErrorZ.Result_NoneMonitorUpdateErrorZ_OK;
 141                     }
 142                     return Result_NoneChannelMonitorUpdateErrZ.ok();
 143                 }
 144
 145                 @Override
 146                 public MonitorEvent[] release_pending_monitor_events() {
 147                     synchronized (monitors) {
 148                         assert monitors.size() <= 1;
 149                         for (ChannelMonitor mon : monitors.values()) {
 150                             return mon.get_and_clear_pending_monitor_events();
 151                         }
 152                     }
 153                     return new MonitorEvent[0];
 154                 }
 155             };
 156             Watch watch = Watch.new_impl(watch_impl);
 157             must_free_objs.add(new WeakReference<>(watch_impl));
 158             must_free_objs.add(new WeakReference<>(watch));
 159             return watch;
 160         }
 161
 162         NioPeerHandler nio_peer_handler;
 163         short nio_port;
 164         final byte seed;
 165         final Logger logger;
 166         final FeeEstimator fee_estimator;
 167         final BroadcasterInterface tx_broadcaster;
 168         final KeysManager explicit_keys_manager;
 169         final KeysInterface keys_interface;
 170         final ChainMonitor chain_monitor;
 171         final NetGraphMsgHandler router;
 172         final Watch chain_watch;
 173         final HashSet<String> filter_additions;
 174         final Option_FilterZ filter;
 175         ChannelManager chan_manager;
 176         PeerManager peer_manager;
 177         final HashMap<String, ChannelMonitor> monitors; // Wow I forgot just how terrible Java is - we can't put a byte array here.
 178         byte[] node_id;
 179         final LinkedList<byte[]> broadcast_set = new LinkedList<>();
 180         final LinkedList<Event> pending_manager_events = new LinkedList<>();
 181         ChannelManagerConstructor constructor = null;
 182         GcCheck obj = new GcCheck();
 183
 184         private TwoTuple<OutPoint, byte[]> test_mon_roundtrip(ChannelMonitor mon) {
 185             // Because get_funding_txo() returns an OutPoint in a tuple that is a reference to an OutPoint inside the
 186             // ChannelMonitor, its a good test to ensure that the OutPoint isn't freed (or is cloned) before the
 187             // ChannelMonitor is. This used to be broken.
 188             Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ roundtrip_monitor = UtilMethods.BlockHashChannelMonitorZ_read(mon.write(), keys_interface);
 189             assert roundtrip_monitor instanceof Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK;
 190             TwoTuple<OutPoint, byte[]> funding_txo = ((Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK) roundtrip_monitor).res.b.get_funding_txo();
 191             System.gc(); System.runFinalization(); // Give the GC a chance to run.
 192             return funding_txo;
 193         }
 194
 195         private Peer(Object _dummy, byte seed) {
 196             logger = Logger.new_impl((String arg) -> System.out.println(seed + ": " + arg));
 197             fee_estimator = FeeEstimator.new_impl((confirmation_target -> 253));
 198             tx_broadcaster = BroadcasterInterface.new_impl(tx -> {
 199                 synchronized (broadcast_set) {
 200                     broadcast_set.add(tx);
 201                     broadcast_set.notifyAll();
 202                 }
 203             });
 204             monitors = new HashMap<>();
 205             this.seed = seed;
 206             Persist persister = Persist.new_impl(new Persist.PersistInterface() {
 207                 @Override
 208                 public Result_NoneChannelMonitorUpdateErrZ persist_new_channel(OutPoint id, ChannelMonitor data) {
 209                     synchronized (monitors) {
 210                         String key = Arrays.toString(id.to_channel_id());
 211                         assert monitors.put(key, data) == null;
 212                         TwoTuple<OutPoint, byte[]> res = test_mon_roundtrip(data);
 213                         assert Arrays.equals(res.a.get_txid(), id.get_txid());
 214                         assert res.a.get_index() == id.get_index();
 215                     }
 216                     return Result_NoneChannelMonitorUpdateErrZ.ok();
 217                 }
 218
 219                 @Override
 220                 public Result_NoneChannelMonitorUpdateErrZ update_persisted_channel(OutPoint id, ChannelMonitorUpdate update, ChannelMonitor data) {
 221                     synchronized (monitors) {
 222                         String key = Arrays.toString(id.to_channel_id());
 223                         assert monitors.put(key, data) != null;
 224                         TwoTuple<OutPoint, byte[]> res = test_mon_roundtrip(data);
 225                         assert Arrays.equals(res.a.get_txid(), id.get_txid());
 226                         assert res.a.get_index() == id.get_index();
 227                     }
 228                     return Result_NoneChannelMonitorUpdateErrZ.ok();
 229                 }
 230             });
 231
 232             filter_additions = new HashSet<>();
 233             if (use_filter) {
 234                 this.filter = Option_FilterZ.some(Filter.new_impl(new Filter.FilterInterface() {
 235                     @Override public void register_tx(byte[] txid, byte[] script_pubkey) {
 236                         filter_additions.add(Arrays.toString(txid));
 237                     }
 238                     @Override public Option_C2Tuple_usizeTransactionZZ register_output(WatchedOutput output) {
 239                         filter_additions.add(Arrays.toString(output.get_outpoint().get_txid()) + ":" + output.get_outpoint().get_index());
 240                         return Option_C2Tuple_usizeTransactionZZ.none();
 241                     }
 242                 }));
 243             } else {
 244                 this.filter = Option_FilterZ.none();
 245             }
 246
 247             if (use_manual_watch) {
 248                 chain_watch = get_manual_watch();
 249                 chain_monitor = null;
 250             } else {
 251                 chain_monitor = ChainMonitor.of(filter, tx_broadcaster, logger, fee_estimator, persister);
 252                 chain_watch = chain_monitor.as_Watch();
 253             }
 254
 255             byte[] key_seed = new byte[32];
 256             for (byte i = 0; i < 32; i++) {
 257                 key_seed[i] = (byte) (i ^ seed);
 258             }
 259             KeysManager keys = KeysManager.of(key_seed, System.currentTimeMillis() / 1000, (int) (System.currentTimeMillis() * 1000));
 260             if (use_km_wrapper) {
 261                 this.keys_interface = manual_keysif(keys.as_KeysInterface());
 262                 this.explicit_keys_manager = null;
 263             } else {
 264                 this.keys_interface = keys.as_KeysInterface();
 265                 this.explicit_keys_manager = keys;
 266             }
 267             this.router = NetGraphMsgHandler.of(new byte[32], Option_AccessZ.none(), logger);
 268         }
 269         private void bind_nio() {
 270             if (!use_nio_peer_handler) return;
 271             if (use_chan_manager_constructor) {
 272                 this.nio_peer_handler = this.constructor.nio_peer_handler;
 273             } else {
 274                 try { this.nio_peer_handler = new NioPeerHandler(peer_manager); } catch (IOException e) { assert false; }
 275             }
 276             for (short i = 10_000; true; i++) {
 277                 try {
 278                     nio_peer_handler.bind_listener(new InetSocketAddress("127.0.0.1", i));
 279                     nio_port = i;
 280                     break;
 281                 } catch (IOException e) { assert i < 10_500; }
 282             }
 283         }
 284         Peer(byte seed) {
 285             this(null, seed);
 286             if (use_chan_manager_constructor) {
 287                 NetGraphMsgHandler route_handler = null;
 288                 if (!use_ignore_handler) {
 289                     route_handler = router;
 290                 }
 291                 this.constructor = new ChannelManagerConstructor(Network.LDKNetwork_Bitcoin, UserConfig.with_default(), new byte[32], 0,
 292                         this.keys_interface, this.fee_estimator, this.chain_monitor, route_handler, this.tx_broadcaster, this.logger);
 293                 constructor.chain_sync_completed(new ChannelManagerConstructor.EventHandler() {
 294                     @Override public void handle_event(Event event) {
 295                         synchronized (pending_manager_events) {
 296                             pending_manager_events.add(event);
 297                             pending_manager_events.notifyAll();
 298                         }
 299                     }
 300                     @Override public void persist_manager(byte[] channel_manager_bytes) { assert channel_manager_bytes.length > 1; }
 301                 });
 302                 this.chan_manager = constructor.channel_manager;
 303                 this.peer_manager = constructor.peer_manager;
 304                 must_free_objs.add(new WeakReference<>(this.chan_manager));
 305             } else {
 306                 ChainParameters params = ChainParameters.of(Network.LDKNetwork_Bitcoin, BestBlock.of(new byte[32], 0));
 307                 this.chan_manager = ChannelManager.of(this.fee_estimator, chain_watch, tx_broadcaster, logger, this.keys_interface, UserConfig.with_default(), params);
 308                 byte[] random_data = keys_interface.get_secure_random_bytes();
 309                 this.peer_manager = PeerManager.of(chan_manager.as_ChannelMessageHandler(), router.as_RoutingMessageHandler(), keys_interface.get_node_secret(), random_data, logger, IgnoringMessageHandler.of().as_CustomMessageHandler());
 310             }
 311
 312             this.node_id = chan_manager.get_our_node_id();
 313             bind_nio();
 314             System.gc();
 315         }
 316
 317         Object ptr_to;
 318         Peer(Peer orig) {
 319             this(null, orig.seed);
 320             if (use_chan_manager_constructor) {
 321                 byte[][] monitors = {orig.monitors.values().stream().iterator().next().write()};
 322                 byte[] serialized = orig.chan_manager.write();
 323                 try {
 324                     Filter filter_nullable = null;
 325                     if (this.filter instanceof Option_FilterZ.Some) {
 326                         filter_nullable = ((Option_FilterZ.Some) this.filter).some;
 327                     }
 328                     this.constructor = new ChannelManagerConstructor(serialized, monitors, this.keys_interface,
 329                             this.fee_estimator, this.chain_monitor, filter_nullable, this.router, this.tx_broadcaster, this.logger);
 330                     constructor.chain_sync_completed(new ChannelManagerConstructor.EventHandler() {
 331                         @Override public void handle_event(Event event) {
 332                             synchronized (pending_manager_events) {
 333                                 pending_manager_events.add(event);
 334                                 pending_manager_events.notifyAll();
 335                             }
 336                         }
 337                         @Override public void persist_manager(byte[] channel_manager_bytes) { assert channel_manager_bytes.length > 1; }
 338                     });
 339                     this.chan_manager = constructor.channel_manager;
 340                     this.peer_manager = constructor.peer_manager;
 341                     must_free_objs.add(new WeakReference<>(this.chan_manager));
 342                     // If we are using a ChannelManagerConstructor, we may have pending events waiting on the old peer
 343                     // which have been removed from the ChannelManager but which we still need to handle.
 344                     this.pending_manager_events.addAll(orig.pending_manager_events);
 345                     if (!this.pending_manager_events.isEmpty()) {
 346                         // However, this implies cross_reload_ref_pollution
 347                         cross_reload_ref_pollution = true;
 348                     }
 349                 } catch (ChannelManagerConstructor.InvalidSerializedDataException e) {
 350                     assert false;
 351                 }
 352             } else {
 353                 ChannelMonitor[] monitors = new ChannelMonitor[1];
 354                 assert orig.monitors.size() == 1;
 355                 if (!break_cross_peer_refs) {
 356                     monitors[0] = orig.monitors.values().stream().iterator().next();
 357                 } else {
 358                     byte[] serialized = orig.monitors.values().stream().iterator().next().write();
 359                     Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ res =
 360                             UtilMethods.BlockHashChannelMonitorZ_read(serialized, this.keys_interface);
 361                     assert res instanceof Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK;
 362                     monitors[0] = ((Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK) res).res.b;
 363                 }
 364                 byte[] serialized = orig.chan_manager.write();
 365                 Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ read_res =
 366                         UtilMethods.BlockHashChannelManagerZ_read(serialized, this.keys_interface, this.fee_estimator, this.chain_watch, this.tx_broadcaster, this.logger, UserConfig.with_default(), monitors);
 367                 assert read_res instanceof Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ.Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ_OK;
 368                 this.chan_manager = ((Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ.Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ_OK) read_res).res.b;
 369                 this.chain_watch.watch_channel(monitors[0].get_funding_txo().a, monitors[0]);
 370                 byte[] random_data = keys_interface.get_secure_random_bytes();
 371                 this.peer_manager = PeerManager.of(chan_manager.as_ChannelMessageHandler(), router.as_RoutingMessageHandler(), keys_interface.get_node_secret(), random_data, logger, IgnoringMessageHandler.of().as_CustomMessageHandler());
 372                 if (!break_cross_peer_refs && (use_manual_watch || use_km_wrapper)) {
 373                     // When we pass monitors[0] into chain_watch.watch_channel we create a reference from the new Peer to a
 374                     // field in the old peer, preventing freeing of the original Peer until the new Peer is freed. Thus, we
 375                     // shouldn't bother waiting for the original to be freed later on.
 376                     cross_reload_ref_pollution = true;
 377                 }
 378             }
 379             this.node_id = chan_manager.get_our_node_id();
 380             bind_nio();
 381
 382             if (cross_reload_ref_pollution) {
 383                 // This really, really needs to be handled at the bindings layer, but its rather complicated -
 384                 // ChannelSigners can be cloned and passed around without java being involved, resulting in them being
 385                 // owned by both one or more ChannelMonitors and a ChannelManager, with only one having proper pointers
 386                 // to the ChannelSigner. Ideally, the ChannelSigner would have a global reference to the Java
 387                 // implementation class, but that results in circular references. Instead, we need some ability to,
 388                 // while cloning ChannelSigners, add new references in the calling Java struct (ie ChannelMonitor) to
 389                 // the ChannelSigner.
 390                 this.ptr_to = orig.chan_manager;
 391             }
 392         }
 393
 394         TwoTuple<byte[], TwoTuple<Integer, TxOut>[]>[] connect_block(Block b, int height, long expected_monitor_update_len) {
 395             byte[] header = Arrays.copyOfRange(b.bitcoinSerialize(), 0, 80);
 396             TwoTuple<Long, byte[]>[] txn;
 397             if (b.hasTransactions()) {
 398                 assert b.getTransactions().size() == 1;
 399                 TwoTuple<Long, byte[]> txp = new TwoTuple<>((long) 0, b.getTransactions().get(0).bitcoinSerialize());
 400                 txn = new TwoTuple[]{txp};
 401             } else
 402                 txn = new TwoTuple[0];
 403             if (chain_monitor != null) {
 404                 chan_manager.as_Listen().block_connected(b.bitcoinSerialize(), height);
 405                 chain_monitor.as_Listen().block_connected(b.bitcoinSerialize(), height);
 406             } else {
 407                 chan_manager.as_Confirm().transactions_confirmed(header, txn, height);
 408                 chan_manager.as_Confirm().best_block_updated(header, height);
 409                 // Connect manually if we aren't using a ChainMonitor and are implementing Watch ourselves
 410                 synchronized (monitors) {
 411                     assert monitors.size() == 1;
 412                     for (ChannelMonitor mon : monitors.values()) {
 413                         TwoTuple<byte[], TwoTuple<Integer, TxOut>[]>[] ret = mon.block_connected(header, txn, height, tx_broadcaster, fee_estimator, logger);
 414                         assert ret.length == expected_monitor_update_len;
 415                         return ret;
 416                     }
 417                 }
 418             }
 419             return null;
 420         }
 421
 422         Event[] get_monitor_events(int expected_len) {
 423             if (use_chan_manager_constructor) {
 424                 while (true) {
 425                     synchronized (this.pending_manager_events) {
 426                         if (expected_len != 0 && this.pending_manager_events.size() == expected_len) {
 427                             break;
 428                         }
 429                     }
 430                     if (expected_len == 0) {
 431                         try { Thread.sleep(500); } catch (InterruptedException e) { assert false; }
 432                         break;
 433                     } else {
 434                         Thread.yield();
 435                     }
 436                 }
 437                 synchronized (this.pending_manager_events) {
 438                     Event[] res = this.pending_manager_events.toArray(new Event[0]);
 439                     this.pending_manager_events.clear();
 440                     assert res.length == expected_len;
 441                     return res;
 442                 }
 443             } else if (chain_monitor != null) {
 444                 ArrayList<Event> l = new ArrayList<Event>();
 445                 chain_monitor.as_EventsProvider().process_pending_events(EventHandler.new_impl(l::add));
 446                 assert l.size() == expected_len;
 447                 return l.toArray(new Event[0]);
 448             } else {
 449                 synchronized (monitors) {
 450                     assert monitors.size() == 1;
 451                     for (ChannelMonitor mon : monitors.values()) {
 452                         Event[] res = mon.get_and_clear_pending_events();
 453                         assert res.length == expected_len;
 454                         return res;
 455                     }
 456                     return null;
 457                 }
 458             }
 459         }
 460
 461         Event[] get_manager_events(int expected_len, Peer peer1, Peer peer2) {
 462             assert expected_len != 0;
 463             if (!use_nio_peer_handler) {
 464                 maybe_exchange_peer_messages(peer1, peer2);
 465             }
 466             Event[] res = new Event[0];
 467             if (use_chan_manager_constructor) {
 468                 while (res.length < expected_len) {
 469                     synchronized (this.pending_manager_events) {
 470                         res = this.pending_manager_events.toArray(res);
 471                         assert res.length == expected_len || res.length == 0; // We don't handle partial results
 472                         this.pending_manager_events.clear();
 473                         if (res.length < expected_len) {
 474                             try { this.pending_manager_events.wait(); } catch (InterruptedException e) { assert false; }
 475                         }
 476                     }
 477                 }
 478             } else {
 479                 ArrayList<Event> l = new ArrayList<Event>();
 480                 while (l.size() < expected_len) {
 481                     Thread.yield();
 482                     if (use_nio_peer_handler) {
 483                         peer1.nio_peer_handler.check_events();
 484                         peer2.nio_peer_handler.check_events();
 485                     }
 486                     chan_manager.as_EventsProvider().process_pending_events(EventHandler.new_impl(l::add));
 487                     assert l.size() == expected_len || l.size() == 0; // We don't handle partial results
 488                 }
 489                 return l.toArray(new Event[0]);
 490             }
 491             assert res.length == expected_len;
 492             return res;
 493         }
 494     }
 495
 496     static class DescriptorHolder { SocketDescriptor val; }
 497
 498     boolean running = false;
 499     final LinkedList<Runnable> runqueue = new LinkedList();
 500     boolean ran = false;
 501     Thread t = new Thread(() -> {
 502             while (true) {
 503                 try {
 504                     Runnable r;
 505                     synchronized (runqueue) {
 506                         while (runqueue.isEmpty()) {
 507                             runqueue.wait();
 508                         }
 509                         running = true;
 510                         r = runqueue.pollFirst();
 511                     }
 512                     r.run();
 513                     synchronized (runqueue) {
 514                         running = false;
 515                         runqueue.notifyAll();
 516                     }
 517                 } catch (InterruptedException e) {
 518                     return;
 519                 }
 520             }
 521     });
 522
 523     void maybe_exchange_peer_messages(Peer peer1, Peer peer2) {
 524         if (!use_nio_peer_handler) {
 525             synchronized (runqueue) {
 526                 ran = false;
 527             }
 528             while (true) {
 529                 peer1.peer_manager.process_events();
 530                 peer2.peer_manager.process_events();
 531                 synchronized (runqueue) {
 532                     if (runqueue.isEmpty() && !running) {
 533                         if (ran) {
 534                             ran = false;
 535                             continue;
 536                         } else { break; }
 537                     }
 538                     try { runqueue.wait(); } catch (InterruptedException e) { assert false; }
 539                 }
 540             }
 541         } else if (!use_chan_manager_constructor) {
 542             peer1.nio_peer_handler.check_events();
 543             peer2.nio_peer_handler.check_events();
 544         }
 545     }
 546     void do_read_event(PeerManager pm, SocketDescriptor descriptor, byte[] data) {
 547         if (!t.isAlive()) t.start();
 548         synchronized (runqueue) {
 549             ran = true;
 550             runqueue.add(() -> {
 551                 Result_boolPeerHandleErrorZ res = pm.read_event(descriptor, data);
 552                 assert res instanceof Result_boolPeerHandleErrorZ.Result_boolPeerHandleErrorZ_OK;
 553             });
 554             runqueue.notifyAll();
 555         }
 556         must_free_objs.add(new WeakReference<>(data));
 557     }
 558
 559     void connect_peers(final Peer peer1, final Peer peer2) {
 560         if (use_nio_peer_handler) {
 561             try {
 562                 peer1.nio_peer_handler.connect(peer2.chan_manager.get_our_node_id(), new InetSocketAddress("127.0.0.1", peer2.nio_port), 100);
 563             } catch (IOException e) { assert false; }
 564             while (peer1.peer_manager.get_peer_node_ids().length == 0 || peer2.peer_manager.get_peer_node_ids().length == 0) {
 565                 Thread.yield();
 566             }
 567         } else {
 568             DescriptorHolder descriptor1 = new DescriptorHolder();
 569             DescriptorHolder descriptor1ref = descriptor1;
 570             SocketDescriptor descriptor2 = SocketDescriptor.new_impl(new SocketDescriptor.SocketDescriptorInterface() {
 571                 @Override
 572                 public long send_data(byte[] data, boolean resume_read) {
 573                     do_read_event(peer1.peer_manager, descriptor1ref.val, data);
 574                     return data.length;
 575                 }
 576
 577                 @Override public void disconnect_socket() { assert false; }
 578                 @Override public boolean eq(SocketDescriptor other_arg) { return other_arg.hash() == 2; }
 579                 @Override public long hash() { return 2; }
 580             });
 581
 582             descriptor1.val = SocketDescriptor.new_impl(new SocketDescriptor.SocketDescriptorInterface() {
 583                 @Override
 584                 public long send_data(byte[] data, boolean resume_read) {
 585                     do_read_event(peer2.peer_manager, descriptor2, data);
 586                     return data.length;
 587                 }
 588
 589                 @Override public void disconnect_socket() { assert false; }
 590                 @Override public boolean eq(SocketDescriptor other_arg) { return other_arg.hash() == 1; }
 591                 @Override public long hash() { return 1; }
 592             });
 593
 594             Result_CVec_u8ZPeerHandleErrorZ conn_res = peer1.peer_manager.new_outbound_connection(peer2.node_id, descriptor1.val);
 595             assert conn_res instanceof Result_CVec_u8ZPeerHandleErrorZ.Result_CVec_u8ZPeerHandleErrorZ_OK;
 596
 597             Result_NonePeerHandleErrorZ inbound_conn_res = peer2.peer_manager.new_inbound_connection(descriptor2);
 598             assert inbound_conn_res instanceof Result_NonePeerHandleErrorZ.Result_NonePeerHandleErrorZ_OK;
 599             do_read_event(peer2.peer_manager, descriptor2, ((Result_CVec_u8ZPeerHandleErrorZ.Result_CVec_u8ZPeerHandleErrorZ_OK) conn_res).res);
 600
 601             maybe_exchange_peer_messages(peer1, peer2);
 602         }
 603     }
 604
 605     TestState do_test_message_handler() throws InterruptedException {
 606         Peer peer1 = new Peer((byte) 1);
 607         Peer peer2 = new Peer((byte) 2);
 608
 609         connect_peers(peer1, peer2);
 610
 611         Result_NoneAPIErrorZ cc_res = peer1.chan_manager.create_channel(peer2.node_id, 100000, 1000, 42, null);
 612         assert cc_res instanceof Result_NoneAPIErrorZ.Result_NoneAPIErrorZ_OK;
 613
 614         // Previously, this was a SEGFAULT instead of get_funding_txo() returning null.
 615         ChannelDetails pre_funding_chan = peer1.chan_manager.list_channels()[0];
 616         assert pre_funding_chan.get_funding_txo() == null;
 617
 618         Event[] events = peer1.get_manager_events(1, peer1, peer2);
 619         assert events[0] instanceof Event.FundingGenerationReady;
 620         assert ((Event.FundingGenerationReady) events[0]).channel_value_satoshis == 100000;
 621         assert ((Event.FundingGenerationReady) events[0]).user_channel_id == 42;
 622         byte[] funding_spk = ((Event.FundingGenerationReady) events[0]).output_script;
 623         assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
 624         byte[] chan_id = ((Event.FundingGenerationReady) events[0]).temporary_channel_id;
 625
 626         NetworkParameters bitcoinj_net = NetworkParameters.fromID(NetworkParameters.ID_MAINNET);
 627
 628         Transaction funding = new Transaction(bitcoinj_net);
 629         funding.addInput(new TransactionInput(bitcoinj_net, funding, new byte[0]));
 630         funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
 631         funding.getInput(0).getWitness().setPush(0, new byte[]{0x1});
 632         funding.addOutput(Coin.SATOSHI.multiply(100000), new Script(funding_spk));
 633         Result_NoneAPIErrorZ funding_res = peer1.chan_manager.funding_transaction_generated(chan_id, funding.bitcoinSerialize());
 634         assert funding_res instanceof Result_NoneAPIErrorZ.Result_NoneAPIErrorZ_OK;
 635
 636         maybe_exchange_peer_messages(peer1, peer2);
 637         synchronized (peer1.broadcast_set) {
 638             while (peer1.broadcast_set.size() != 1) {
 639                 peer1.broadcast_set.wait();
 640             }
 641         }
 642
 643         assert peer1.broadcast_set.size() == 1;
 644         assert Arrays.equals(peer1.broadcast_set.get(0), funding.bitcoinSerialize());
 645         peer1.broadcast_set.clear();
 646
 647         Block b = new Block(bitcoinj_net, 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
 648         peer1.connect_block(b, 1, 0);
 649         peer2.connect_block(b, 1, 0);
 650
 651         for (int height = 2; height < 10; height++) {
 652             b = new Block(bitcoinj_net, 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[0]));
 653             peer1.connect_block(b, height, 0);
 654             peer2.connect_block(b, height, 0);
 655         }
 656
 657         maybe_exchange_peer_messages(peer1, peer2);
 658         while (peer1.chan_manager.list_usable_channels().length != 1 || peer2.chan_manager.list_usable_channels().length != 1)
 659
 660         peer1.chan_manager.list_channels();
 661         ChannelDetails[] peer1_chans = peer1.chan_manager.list_usable_channels();
 662         ChannelDetails[] peer2_chans = peer2.chan_manager.list_usable_channels();
 663         assert peer1_chans.length == 1;
 664         assert peer2_chans.length == 1;
 665         assert peer1_chans[0].get_channel_value_satoshis() == 100000;
 666         assert peer1_chans[0].get_is_usable();
 667         Option_u64Z short_chan_id = peer1_chans[0].get_short_channel_id();
 668         assert short_chan_id instanceof Option_u64Z.Some;
 669         assert ((Option_u64Z.Some)short_chan_id).some == (1L << 40); // 0th output in the 0th transaction in the 1st block
 670         assert Arrays.equals(peer1_chans[0].get_channel_id(), funding.getTxId().getReversedBytes());
 671         assert Arrays.equals(peer2_chans[0].get_channel_id(), funding.getTxId().getReversedBytes());
 672
 673         Result_InvoiceSignOrCreationErrorZ invoice = UtilMethods.create_invoice_from_channelmanager(peer2.chan_manager, peer2.keys_interface, Currency.LDKCurrency_Bitcoin, Option_u64Z.none(), "Invoice Description");
 674         assert invoice instanceof Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK;
 675         System.out.println("Got invoice: " + ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.to_str());
 676
 677         Result_InvoiceNoneZ parsed_invoice = Invoice.from_str(((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.to_str());
 678         assert parsed_invoice instanceof Result_InvoiceNoneZ.Result_InvoiceNoneZ_OK;
 679         assert Arrays.equals(((Result_InvoiceNoneZ.Result_InvoiceNoneZ_OK) parsed_invoice).res.payment_hash(), ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.payment_hash());
 680         SignedRawInvoice signed_raw = ((Result_InvoiceNoneZ.Result_InvoiceNoneZ_OK) parsed_invoice).res.into_signed_raw();
 681         RawInvoice raw_invoice = signed_raw.raw_invoice();
 682         byte[] desc_hash = raw_invoice.hash();
 683         Description raw_invoice_description = raw_invoice.description();
 684         String description_string = raw_invoice_description.into_inner();
 685         assert description_string.equals("Invoice Description");
 686         byte[] payment_hash = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.payment_hash();
 687         byte[] payment_secret = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.payment_secret();
 688         byte[] dest_node_id = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.recover_payee_pub_key();
 689         assert Arrays.equals(dest_node_id, peer2.node_id);
 690         InvoiceFeatures invoice_features = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.features();
 691         RouteHint[] route_hints = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.route_hints();
 692
 693         Result_RouteLightningErrorZ route_res = UtilMethods.get_route(peer1.chan_manager.get_our_node_id(), peer1.router.get_network_graph(), peer2.node_id, invoice_features, peer1_chans, route_hints, 10000000, 42, peer1.logger);
 694         assert route_res instanceof Result_RouteLightningErrorZ.Result_RouteLightningErrorZ_OK;
 695         Route route = ((Result_RouteLightningErrorZ.Result_RouteLightningErrorZ_OK) route_res).res;
 696
 697         Result_NonePaymentSendFailureZ payment_res = peer1.chan_manager.send_payment(route, payment_hash, payment_secret);
 698         assert payment_res instanceof Result_NonePaymentSendFailureZ.Result_NonePaymentSendFailureZ_OK;
 699
 700         RouteHop[][] hops = new RouteHop[1][1];
 701         byte[] hop_pubkey = new byte[33];
 702         hop_pubkey[0] = 3;
 703         hop_pubkey[1] = 42;
 704         hops[0][0] = RouteHop.of(hop_pubkey, NodeFeatures.known(), 42, ChannelFeatures.known(), 100, 0);
 705         Route r2 = Route.of(hops);
 706         payment_res = peer1.chan_manager.send_payment(r2, payment_hash, payment_secret);
 707         assert payment_res instanceof Result_NonePaymentSendFailureZ.Result_NonePaymentSendFailureZ_Err;
 708
 709         if (reload_peers) {
 710             if (use_chan_manager_constructor) {
 711                 peer1.constructor.interrupt();
 712                 peer2.constructor.interrupt();
 713             } else if (use_nio_peer_handler) {
 714                 peer1.nio_peer_handler.interrupt();
 715                 peer2.nio_peer_handler.interrupt();
 716             }
 717             WeakReference<Peer> op1 = new WeakReference<Peer>(peer1);
 718             peer1 = new Peer(peer1);
 719             peer2 = new Peer(peer2);
 720             return new TestState(op1, peer1, peer2, b.getHash());
 721         }
 722         return new TestState(null, peer1, peer2, b.getHash());
 723     }
 724
 725     boolean cross_reload_ref_pollution = false;
 726     class TestState {
 727         private final WeakReference<Peer> ref_block;
 728         private final Peer peer1;
 729         private final Peer peer2;
 730         public Sha256Hash best_blockhash;
 731
 732         public TestState(WeakReference<Peer> ref_block, Peer peer1, Peer peer2, Sha256Hash best_blockhash) {
 733             this.ref_block = ref_block;
 734             this.peer1 = peer1;
 735             this.peer2 = peer2;
 736             this.best_blockhash = best_blockhash;
 737         }
 738     }
 739     void do_test_message_handler_b(TestState state) throws InterruptedException {
 740         GcCheck obj = new GcCheck();
 741         if (state.ref_block != null) {
 742             // Ensure the original peers get freed before we move on. Note that we have to be in a different function
 743             // scope to do so as the (at least current OpenJDK) JRE won't release anything created in the same scope.
 744             while (!cross_reload_ref_pollution && state.ref_block.get() != null) {
 745                 System.gc();
 746                 System.runFinalization();
 747             }
 748             connect_peers(state.peer1, state.peer2);
 749         }
 750
 751         Event[] events = state.peer2.get_manager_events(1, state.peer1, state.peer2);
 752         assert events[0] instanceof Event.PendingHTLCsForwardable;
 753         state.peer2.chan_manager.process_pending_htlc_forwards();
 754
 755         events = state.peer2.get_manager_events(1, state.peer1, state.peer2);
 756         assert events[0] instanceof Event.PaymentReceived;
 757         assert ((Event.PaymentReceived)events[0]).purpose instanceof PaymentPurpose.InvoicePayment;
 758         byte[] payment_preimage = ((PaymentPurpose.InvoicePayment)((Event.PaymentReceived)events[0]).purpose).payment_preimage;
 759         assert !Arrays.equals(payment_preimage, new byte[32]);
 760         state.peer2.chan_manager.claim_funds(payment_preimage);
 761
 762         events = state.peer1.get_manager_events(1, state.peer1, state.peer2);
 763         assert events[0] instanceof Event.PaymentSent;
 764         assert Arrays.equals(((Event.PaymentSent) events[0]).payment_preimage, payment_preimage);
 765
 766         if (use_nio_peer_handler) {
 767             // We receive PaymentSent immediately upon receipt of the payment preimage, but we expect to not have an
 768             // HTLC transaction to broadcast below, which requires a bit more time to fully complete the
 769             // commitment-transaction-update dance between both peers.
 770             Thread.sleep(100);
 771         }
 772
 773         ChannelDetails[] peer1_chans = state.peer1.chan_manager.list_channels();
 774
 775         if (nice_close) {
 776             Result_NoneAPIErrorZ close_res = state.peer1.chan_manager.close_channel(peer1_chans[0].get_channel_id());
 777             assert close_res instanceof Result_NoneAPIErrorZ.Result_NoneAPIErrorZ_OK;
 778             maybe_exchange_peer_messages(state.peer1, state.peer2);
 779             synchronized (state.peer1.broadcast_set) {
 780                 while (state.peer1.broadcast_set.size() != 1) state.peer1.broadcast_set.wait();
 781             }
 782             synchronized (state.peer2.broadcast_set) {
 783                 while (state.peer2.broadcast_set.size() != 1) state.peer2.broadcast_set.wait();
 784             }
 785
 786             assert state.peer1.broadcast_set.size() == 1;
 787             assert state.peer2.broadcast_set.size() == 1;
 788         } else {
 789             state.peer1.chan_manager.force_close_all_channels();
 790             maybe_exchange_peer_messages(state.peer1, state.peer2);
 791             synchronized (state.peer1.broadcast_set) {
 792                 while (state.peer1.broadcast_set.size() != 1) state.peer1.broadcast_set.wait();
 793             }
 794             synchronized (state.peer2.broadcast_set) {
 795                 while (state.peer2.broadcast_set.size() != 1) state.peer2.broadcast_set.wait();
 796             }
 797
 798             assert state.peer1.broadcast_set.size() == 1;
 799             assert state.peer2.broadcast_set.size() == 1;
 800
 801             NetworkParameters bitcoinj_net = NetworkParameters.fromID(NetworkParameters.ID_MAINNET);
 802             Transaction tx = new Transaction(bitcoinj_net, state.peer1.broadcast_set.getFirst());
 803             Block b = new Block(bitcoinj_net, 2, state.best_blockhash, Sha256Hash.ZERO_HASH, 42, 0, 0,
 804                     Arrays.asList(new Transaction[]{tx}));
 805             TwoTuple<byte[], TwoTuple<Integer, TxOut>[]>[] watch_outputs = state.peer2.connect_block(b, 10, 1);
 806             if (watch_outputs != null) { // We only process watch_outputs manually when we use a manually-build Watch impl
 807                 assert watch_outputs.length == 1;
 808                 assert Arrays.equals(watch_outputs[0].a, tx.getTxId().getReversedBytes());
 809                 assert watch_outputs[0].b.length == 2;
 810                 assert watch_outputs[0].b[0].a == 0;
 811                 assert watch_outputs[0].b[1].a == 1;
 812             }
 813
 814             for (int i = 11; i < 21; i++) {
 815                 b = new Block(bitcoinj_net, 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, new ArrayList<>());
 816                 state.peer2.connect_block(b, i, 0);
 817             }
 818
 819             Event[] broadcastable_event = state.peer2.get_monitor_events(1);
 820             for (ChannelMonitor mon : state.peer2.monitors.values()) {
 821                 // This used to be buggy and double-free, so go ahead and fetch them!
 822                 byte[][] txn = mon.get_latest_holder_commitment_txn(state.peer2.logger);
 823             }
 824             assert broadcastable_event.length == 1;
 825             assert broadcastable_event[0] instanceof Event.SpendableOutputs;
 826             if (state.peer2.explicit_keys_manager != null) {
 827                 TxOut[] additional_outputs = new TxOut[] { new TxOut(420, new byte[] { 0x42 }) };
 828                 Result_TransactionNoneZ tx_res = state.peer2.explicit_keys_manager.spend_spendable_outputs(((Event.SpendableOutputs) broadcastable_event[0]).outputs, additional_outputs, new byte[] {0x00}, 253);
 829                 assert tx_res instanceof Result_TransactionNoneZ.Result_TransactionNoneZ_OK;
 830                 Transaction built_tx = new Transaction(bitcoinj_net, ((Result_TransactionNoneZ.Result_TransactionNoneZ_OK) tx_res).res);
 831                 assert built_tx.getOutputs().size() == 2;
 832                 assert Arrays.equals(built_tx.getOutput(1).getScriptBytes(), new byte[]{0x00});
 833                 assert Arrays.equals(built_tx.getOutput(0).getScriptBytes(), new byte[]{0x42});
 834                 assert built_tx.getOutput(0).getValue().value == 420;
 835             }
 836         }
 837
 838         if (use_nio_peer_handler) {
 839             state.peer1.peer_manager.disconnect_by_node_id(state.peer2.chan_manager.get_our_node_id(), false);
 840             while (state.peer1.peer_manager.get_peer_node_ids().length != 0) Thread.yield();
 841             while (state.peer2.peer_manager.get_peer_node_ids().length != 0) Thread.yield();
 842             state.peer1.nio_peer_handler.interrupt();
 843             state.peer2.nio_peer_handler.interrupt();
 844         }
 845
 846         state.peer1.get_monitor_events(0);
 847         state.peer2.get_monitor_events(0);
 848
 849         if (use_chan_manager_constructor) {
 850             state.peer1.constructor.interrupt();
 851             state.peer2.constructor.interrupt();
 852         }
 853
 854         t.interrupt();
 855     }
 856
 857     java.util.LinkedList<WeakReference<Object>> must_free_objs = new java.util.LinkedList();
 858     int gc_count = 0;
 859     int gc_exp_count = 0;
 860     class GcCheck {
 861         GcCheck() { gc_exp_count += 1; }
 862         @Override
 863         protected void finalize() throws Throwable {
 864             gc_count += 1;
 865             super.finalize();
 866         }
 867     }
 868 }
 869 public class HumanObjectPeerTest {
 870     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) throws InterruptedException {
 871         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);
 872         HumanObjectPeerTestInstance.TestState state = instance.do_test_message_handler();
 873         instance.do_test_message_handler_b(state);
 874         return instance;
 875     }
 876     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) throws InterruptedException {
 877         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);
 878         while (instance.gc_count != instance.gc_exp_count) {
 879             System.gc();
 880             System.runFinalization();
 881         }
 882         for (WeakReference<Object> o : instance.must_free_objs)
 883             assert o.get() == null;
 884     }
 885     @Test
 886     public void test_message_handler() throws InterruptedException {
 887         for (int i = 0; i < (1 << 7) - 1; i++) {
 888             boolean nice_close =                   (i & (1 << 0)) != 0;
 889             boolean use_km_wrapper =               (i & (1 << 1)) != 0;
 890             boolean use_manual_watch =             (i & (1 << 2)) != 0;
 891             boolean reload_peers =                 (i & (1 << 3)) != 0;
 892             boolean break_cross_refs =             (i & (1 << 4)) != 0;
 893             boolean nio_peer_handler =             (i & (1 << 5)) != 0;
 894             boolean use_ignoring_routing_handler = (i & (1 << 6)) != 0;
 895             boolean use_chan_manager_constructor = (i & (1 << 7)) != 0;
 896             if (break_cross_refs && !reload_peers) {
 897                 // There are no cross refs to break without reloading peers.
 898                 continue;
 899             }
 900             if (use_chan_manager_constructor && (use_manual_watch || !nio_peer_handler)) {
 901                 // ChannelManagerConstructor requires a ChainMonitor as the Watch and creates a NioPeerHandler for us.
 902                 continue;
 903             }
 904             if (!use_chan_manager_constructor && use_ignoring_routing_handler) {
 905                 // We rely on the ChannelManagerConstructor to convert null into an IgnoringMessageHandler, so don't
 906                 // try to run with an IgnoringMessageHandler unless we're also using a ChannelManagerConstructor.
 907                 continue;
 908             }
 909             System.err.println("Running test with flags " + i);
 910             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);
 911         }
 912     }
 913
 914     // This is used in the test jar to test the built jar is runnable
 915     public static void main(String[] args) {
 916         try {
 917             new HumanObjectPeerTest().test_message_handler();
 918         } catch (Exception e) {
 919             System.err.println("Caught exception:");
 920             System.err.println(e);
 921             System.exit(1);
 922         }
 923     }
 924 }