_ 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.Currency;
   9 import org.ldk.enums.Network;
  10 import org.ldk.structs.*;
  11 import org.ldk.util.TwoTuple;
  12
  13 import java.io.IOException;
  14 import java.lang.ref.WeakReference;
  15 import java.net.InetSocketAddress;
  16 import java.util.*;
  17
  18 class HumanObjectPeerTestInstance {
  19     private final boolean nice_close;
  20     private final boolean use_km_wrapper;
  21     private final boolean use_manual_watch;
  22     private final boolean reload_peers;
  23     private final boolean break_cross_peer_refs;
  24     private final boolean use_nio_peer_handler;
  25     private final boolean use_filter;
  26     private final boolean use_ignore_handler;
  27     private final boolean use_chan_manager_constructor;
  28
  29     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) {
  30         this.nice_close = nice_close;
  31         this.use_km_wrapper = use_km_wrapper;
  32         this.use_manual_watch = use_manual_watch;
  33         this.reload_peers = reload_peers;
  34         this.break_cross_peer_refs = break_cross_peer_refs;
  35         this.use_nio_peer_handler = use_nio_peer_handler;
  36         this.use_filter = use_filter;
  37         this.use_ignore_handler = use_ignore_handler;
  38         this.use_chan_manager_constructor = use_chan_manager_constructor;
  39     }
  40
  41     class Peer {
  42         KeysInterface manual_keysif(KeysInterface underlying_if) {
  43             return KeysInterface.new_impl(new KeysInterface.KeysInterfaceInterface() {
  44                 @Override public byte[] get_node_secret() { return underlying_if.get_node_secret(); }
  45                 @Override public byte[] get_destination_script() { return underlying_if.get_destination_script(); }
  46                 @Override public ShutdownScript get_shutdown_scriptpubkey() { return underlying_if.get_shutdown_scriptpubkey(); }
  47
  48                 @Override
  49                 public Sign get_channel_signer(boolean inbound, long channel_value_satoshis) {
  50                     Sign underlying_ck = underlying_if.get_channel_signer(inbound, channel_value_satoshis);
  51                     BaseSign underlying_base = underlying_ck.get_base_sign();
  52                     BaseSign.BaseSignInterface bsi = new BaseSign.BaseSignInterface() {
  53                         @Override
  54                         public byte[] get_per_commitment_point(long idx) {
  55                             return underlying_base.get_per_commitment_point(idx);
  56                         }
  57
  58                         @Override
  59                         public byte[] release_commitment_secret(long idx) {
  60                             return underlying_base.release_commitment_secret(idx);
  61                         }
  62
  63                         @Override
  64                         public byte[] channel_keys_id() {
  65                             return new byte[32];
  66                         }
  67
  68                         @Override
  69                         public Result_C2Tuple_SignatureCVec_SignatureZZNoneZ sign_counterparty_commitment(CommitmentTransaction commitment_tx) {
  70                             return underlying_base.sign_counterparty_commitment(commitment_tx);
  71                         }
  72
  73                         @Override
  74                         public Result_C2Tuple_SignatureCVec_SignatureZZNoneZ sign_holder_commitment_and_htlcs(HolderCommitmentTransaction holder_commitment_tx) {
  75                             return underlying_base.sign_holder_commitment_and_htlcs(holder_commitment_tx);
  76                         }
  77
  78                         @Override
  79                         public Result_SignatureNoneZ sign_justice_revoked_output(byte[] justice_tx, long input, long amount, byte[] per_commitment_key) {
  80                             return underlying_base.sign_justice_revoked_output(justice_tx, input, amount, per_commitment_key);
  81                         }
  82
  83                         @Override
  84                         public Result_SignatureNoneZ sign_justice_revoked_htlc(byte[] justice_tx, long input, long amount, byte[] per_commitment_key, HTLCOutputInCommitment htlc) {
  85                             return underlying_base.sign_justice_revoked_htlc(justice_tx, input, amount, per_commitment_key, htlc);
  86                         }
  87
  88                         @Override
  89                         public Result_SignatureNoneZ sign_counterparty_htlc_transaction(byte[] htlc_tx, long input, long amount, byte[] per_commitment_point, HTLCOutputInCommitment htlc) {
  90                             return underlying_base.sign_counterparty_htlc_transaction(htlc_tx, input, amount, per_commitment_point, htlc);
  91                         }
  92
  93                         @Override
  94                         public Result_SignatureNoneZ sign_closing_transaction(byte[] closing_tx) {
  95                             return underlying_base.sign_closing_transaction(closing_tx);
  96                         }
  97
  98                         @Override
  99                         public Result_SignatureNoneZ sign_channel_announcement(UnsignedChannelAnnouncement msg) {
 100                             return underlying_base.sign_channel_announcement(msg);
 101                         }
 102
 103                         @Override
 104                         public void ready_channel(ChannelTransactionParameters params) {
 105                             underlying_base.ready_channel(params);
 106                         }
 107                     };
 108                     Sign.SignInterface si = new Sign.SignInterface() {
 109                         @Override
 110                         public byte[] write() {
 111                             return underlying_ck.write();
 112                         }
 113                     };
 114                     Sign resp = Sign.new_impl(si, bsi, underlying_base.get_pubkeys());
 115                     must_free_objs.add(new WeakReference<>(si));
 116                     must_free_objs.add(new WeakReference<>(bsi));
 117                     must_free_objs.add(new WeakReference<>(resp));
 118                     must_free_objs.add(new WeakReference<>(underlying_base));
 119                     must_free_objs.add(new WeakReference<>(underlying_ck));
 120                     return resp;
 121                 }
 122
 123                 @Override
 124                 public byte[] get_secure_random_bytes() {
 125                     return underlying_if.get_secure_random_bytes();
 126                 }
 127
 128                 @Override
 129                 public Result_SignDecodeErrorZ read_chan_signer(byte[] reader) {
 130                     return underlying_if.read_chan_signer(reader);
 131                 }
 132
 133                 @Override
 134                 public Result_RecoverableSignatureNoneZ sign_invoice(byte[] invoice_preimage) {
 135                     return underlying_if.sign_invoice(invoice_preimage);
 136                 }
 137             });
 138         }
 139
 140         Watch get_manual_watch() {
 141             Watch.WatchInterface watch_impl = new Watch.WatchInterface() {
 142                 public Result_NoneChannelMonitorUpdateErrZ watch_channel(OutPoint funding_txo, ChannelMonitor monitor) {
 143                     synchronized (monitors) {
 144                         assert monitors.put(Arrays.toString(funding_txo.get_txid()), monitor) == null;
 145                     }
 146                     return Result_NoneChannelMonitorUpdateErrZ.ok();
 147                 }
 148
 149                 public Result_NoneChannelMonitorUpdateErrZ update_channel(OutPoint funding_txo, ChannelMonitorUpdate update) {
 150                     synchronized (monitors) {
 151                         String txid = Arrays.toString(funding_txo.get_txid());
 152                         assert monitors.containsKey(txid);
 153                         Result_NoneMonitorUpdateErrorZ update_res = monitors.get(txid).update_monitor(update, tx_broadcaster, fee_estimator, logger);
 154                         assert update_res instanceof Result_NoneMonitorUpdateErrorZ.Result_NoneMonitorUpdateErrorZ_OK;
 155                     }
 156                     return Result_NoneChannelMonitorUpdateErrZ.ok();
 157                 }
 158
 159                 @Override
 160                 public MonitorEvent[] release_pending_monitor_events() {
 161                     synchronized (monitors) {
 162                         assert monitors.size() <= 1;
 163                         for (ChannelMonitor mon : monitors.values()) {
 164                             return mon.get_and_clear_pending_monitor_events();
 165                         }
 166                     }
 167                     return new MonitorEvent[0];
 168                 }
 169             };
 170             Watch watch = Watch.new_impl(watch_impl);
 171             must_free_objs.add(new WeakReference<>(watch_impl));
 172             must_free_objs.add(new WeakReference<>(watch));
 173             return watch;
 174         }
 175
 176         NioPeerHandler nio_peer_handler;
 177         short nio_port;
 178         final byte seed;
 179         final Logger logger;
 180         final FeeEstimator fee_estimator;
 181         final BroadcasterInterface tx_broadcaster;
 182         final KeysManager explicit_keys_manager;
 183         final KeysInterface keys_interface;
 184         final ChainMonitor chain_monitor;
 185         final NetGraphMsgHandler router;
 186         final Watch chain_watch;
 187         final HashSet<String> filter_additions;
 188         final Filter filter;
 189         ChannelManager chan_manager;
 190         PeerManager peer_manager;
 191         final HashMap<String, ChannelMonitor> monitors; // Wow I forgot just how terrible Java is - we can't put a byte array here.
 192         byte[] node_id;
 193         final LinkedList<byte[]> broadcast_set = new LinkedList<>();
 194         final LinkedList<Event> pending_manager_events = new LinkedList<>();
 195         ChannelManagerConstructor constructor = null;
 196         GcCheck obj = new GcCheck();
 197
 198         private TwoTuple<OutPoint, byte[]> test_mon_roundtrip(ChannelMonitor mon) {
 199             // Because get_funding_txo() returns an OutPoint in a tuple that is a reference to an OutPoint inside the
 200             // ChannelMonitor, its a good test to ensure that the OutPoint isn't freed (or is cloned) before the
 201             // ChannelMonitor is. This used to be broken.
 202             Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ roundtrip_monitor = UtilMethods.BlockHashChannelMonitorZ_read(mon.write(), keys_interface);
 203             assert roundtrip_monitor instanceof Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK;
 204             TwoTuple<OutPoint, byte[]> funding_txo = ((Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK) roundtrip_monitor).res.b.get_funding_txo();
 205             System.gc(); System.runFinalization(); // Give the GC a chance to run.
 206             return funding_txo;
 207         }
 208
 209         private Peer(Object _dummy, byte seed) {
 210             logger = Logger.new_impl((String arg) -> System.out.println(seed + ": " + arg));
 211             fee_estimator = FeeEstimator.new_impl((confirmation_target -> 253));
 212             tx_broadcaster = BroadcasterInterface.new_impl(tx -> {
 213                 synchronized (broadcast_set) {
 214                     broadcast_set.add(tx);
 215                     broadcast_set.notifyAll();
 216                 }
 217             });
 218             monitors = new HashMap<>();
 219             this.seed = seed;
 220             Persist persister = Persist.new_impl(new Persist.PersistInterface() {
 221                 @Override
 222                 public Result_NoneChannelMonitorUpdateErrZ persist_new_channel(OutPoint id, ChannelMonitor data) {
 223                     synchronized (monitors) {
 224                         String key = Arrays.toString(id.to_channel_id());
 225                         assert monitors.put(key, data) == null;
 226                         TwoTuple<OutPoint, byte[]> res = test_mon_roundtrip(data);
 227                         assert Arrays.equals(res.a.get_txid(), id.get_txid());
 228                         assert res.a.get_index() == id.get_index();
 229                     }
 230                     return Result_NoneChannelMonitorUpdateErrZ.ok();
 231                 }
 232
 233                 @Override
 234                 public Result_NoneChannelMonitorUpdateErrZ update_persisted_channel(OutPoint id, ChannelMonitorUpdate update, ChannelMonitor data) {
 235                     synchronized (monitors) {
 236                         String key = Arrays.toString(id.to_channel_id());
 237                         assert monitors.put(key, data) != null;
 238                         TwoTuple<OutPoint, byte[]> res = test_mon_roundtrip(data);
 239                         assert Arrays.equals(res.a.get_txid(), id.get_txid());
 240                         assert res.a.get_index() == id.get_index();
 241                     }
 242                     return Result_NoneChannelMonitorUpdateErrZ.ok();
 243                 }
 244             });
 245
 246             filter_additions = new HashSet<>();
 247             if (use_filter) {
 248                 this.filter = Filter.new_impl(new Filter.FilterInterface() {
 249                     @Override public void register_tx(byte[] txid, byte[] script_pubkey) {
 250                         filter_additions.add(Arrays.toString(txid));
 251                     }
 252                     @Override public Option_C2Tuple_usizeTransactionZZ register_output(WatchedOutput output) {
 253                         filter_additions.add(Arrays.toString(output.get_outpoint().get_txid()) + ":" + output.get_outpoint().get_index());
 254                         return Option_C2Tuple_usizeTransactionZZ.none();
 255                     }
 256                 });
 257             } else {
 258                 this.filter = null;
 259             }
 260
 261             if (use_manual_watch) {
 262                 chain_watch = get_manual_watch();
 263                 chain_monitor = null;
 264             } else {
 265                 chain_monitor = ChainMonitor.of(filter, tx_broadcaster, logger, fee_estimator, persister);
 266                 chain_watch = chain_monitor.as_Watch();
 267             }
 268
 269             byte[] key_seed = new byte[32];
 270             for (byte i = 0; i < 32; i++) {
 271                 key_seed[i] = (byte) (i ^ seed);
 272             }
 273             KeysManager keys = KeysManager.of(key_seed, System.currentTimeMillis() / 1000, (int) (System.currentTimeMillis() * 1000));
 274             if (use_km_wrapper) {
 275                 this.keys_interface = manual_keysif(keys.as_KeysInterface());
 276                 this.explicit_keys_manager = null;
 277             } else {
 278                 this.keys_interface = keys.as_KeysInterface();
 279                 this.explicit_keys_manager = keys;
 280             }
 281             this.router = NetGraphMsgHandler.of(new byte[32], null, logger);
 282         }
 283         private void bind_nio() {
 284             if (!use_nio_peer_handler) return;
 285             if (use_chan_manager_constructor) {
 286                 this.nio_peer_handler = this.constructor.nio_peer_handler;
 287             } else {
 288                 try { this.nio_peer_handler = new NioPeerHandler(peer_manager); } catch (IOException e) { assert false; }
 289             }
 290             for (short i = 10_000; true; i++) {
 291                 try {
 292                     nio_peer_handler.bind_listener(new InetSocketAddress("127.0.0.1", i));
 293                     nio_port = i;
 294                     break;
 295                 } catch (IOException e) { assert i < 10_500; }
 296             }
 297         }
 298         Peer(byte seed) {
 299             this(null, seed);
 300             if (use_chan_manager_constructor) {
 301                 NetGraphMsgHandler route_handler = null;
 302                 if (!use_ignore_handler) {
 303                     route_handler = router;
 304                 }
 305                 this.constructor = new ChannelManagerConstructor(Network.LDKNetwork_Bitcoin, UserConfig.with_default(), new byte[32], 0,
 306                         this.keys_interface, this.fee_estimator, this.chain_monitor, route_handler, this.tx_broadcaster, this.logger);
 307                 constructor.chain_sync_completed(new ChannelManagerConstructor.EventHandler() {
 308                     @Override public void handle_event(Event event) {
 309                         synchronized (pending_manager_events) {
 310                             pending_manager_events.add(event);
 311                             pending_manager_events.notifyAll();
 312                         }
 313                     }
 314                     @Override public void persist_manager(byte[] channel_manager_bytes) { assert channel_manager_bytes.length > 1; }
 315                 });
 316                 this.chan_manager = constructor.channel_manager;
 317                 this.peer_manager = constructor.peer_manager;
 318                 must_free_objs.add(new WeakReference<>(this.chan_manager));
 319             } else {
 320                 ChainParameters params = ChainParameters.of(Network.LDKNetwork_Bitcoin, BestBlock.of(new byte[32], 0));
 321                 this.chan_manager = ChannelManager.of(this.fee_estimator, chain_watch, tx_broadcaster, logger, this.keys_interface, UserConfig.with_default(), params);
 322                 byte[] random_data = keys_interface.get_secure_random_bytes();
 323                 this.peer_manager = PeerManager.of(chan_manager.as_ChannelMessageHandler(), router.as_RoutingMessageHandler(), keys_interface.get_node_secret(), random_data, logger);
 324             }
 325
 326             this.node_id = chan_manager.get_our_node_id();
 327             bind_nio();
 328             System.gc();
 329         }
 330
 331         Object ptr_to;
 332         Peer(Peer orig) {
 333             this(null, orig.seed);
 334             if (use_chan_manager_constructor) {
 335                 byte[][] monitors = {orig.monitors.values().stream().iterator().next().write()};
 336                 byte[] serialized = orig.chan_manager.write();
 337                 try {
 338                     this.constructor = new ChannelManagerConstructor(serialized, monitors, this.keys_interface,
 339                             this.fee_estimator, this.chain_monitor, this.filter, this.router, this.tx_broadcaster, this.logger);
 340                     constructor.chain_sync_completed(new ChannelManagerConstructor.EventHandler() {
 341                         @Override public void handle_event(Event event) {
 342                             synchronized (pending_manager_events) {
 343                                 pending_manager_events.add(event);
 344                                 pending_manager_events.notifyAll();
 345                             }
 346                         }
 347                         @Override public void persist_manager(byte[] channel_manager_bytes) { assert channel_manager_bytes.length > 1; }
 348                     });
 349                     this.chan_manager = constructor.channel_manager;
 350                     this.peer_manager = constructor.peer_manager;
 351                     must_free_objs.add(new WeakReference<>(this.chan_manager));
 352                     // If we are using a ChannelManagerConstructor, we may have pending events waiting on the old peer
 353                     // which have been removed from the ChannelManager but which we still need to handle.
 354                     this.pending_manager_events.addAll(orig.pending_manager_events);
 355                     if (!this.pending_manager_events.isEmpty()) {
 356                         // However, this implies cross_reload_ref_pollution
 357                         cross_reload_ref_pollution = true;
 358                     }
 359                 } catch (ChannelManagerConstructor.InvalidSerializedDataException e) {
 360                     assert false;
 361                 }
 362             } else {
 363                 ChannelMonitor[] monitors = new ChannelMonitor[1];
 364                 assert orig.monitors.size() == 1;
 365                 if (!break_cross_peer_refs) {
 366                     monitors[0] = orig.monitors.values().stream().iterator().next();
 367                 } else {
 368                     byte[] serialized = orig.monitors.values().stream().iterator().next().write();
 369                     Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ res =
 370                             UtilMethods.BlockHashChannelMonitorZ_read(serialized, this.keys_interface);
 371                     assert res instanceof Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK;
 372                     monitors[0] = ((Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK) res).res.b;
 373                 }
 374                 byte[] serialized = orig.chan_manager.write();
 375                 Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ read_res =
 376                         UtilMethods.BlockHashChannelManagerZ_read(serialized, this.keys_interface, this.fee_estimator, this.chain_watch, this.tx_broadcaster, this.logger, UserConfig.with_default(), monitors);
 377                 assert read_res instanceof Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ.Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ_OK;
 378                 this.chan_manager = ((Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ.Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ_OK) read_res).res.b;
 379                 this.chain_watch.watch_channel(monitors[0].get_funding_txo().a, monitors[0]);
 380                 byte[] random_data = keys_interface.get_secure_random_bytes();
 381                 this.peer_manager = PeerManager.of(chan_manager.as_ChannelMessageHandler(), router.as_RoutingMessageHandler(), keys_interface.get_node_secret(), random_data, logger);
 382                 if (!break_cross_peer_refs && (use_manual_watch || use_km_wrapper)) {
 383                     // When we pass monitors[0] into chain_watch.watch_channel we create a reference from the new Peer to a
 384                     // field in the old peer, preventing freeing of the original Peer until the new Peer is freed. Thus, we
 385                     // shouldn't bother waiting for the original to be freed later on.
 386                     cross_reload_ref_pollution = true;
 387                 }
 388             }
 389             this.node_id = chan_manager.get_our_node_id();
 390             bind_nio();
 391
 392             if (cross_reload_ref_pollution) {
 393                 // This really, really needs to be handled at the bindings layer, but its rather complicated -
 394                 // ChannelSigners can be cloned and passed around without java being involved, resulting in them being
 395                 // owned by both one or more ChannelMonitors and a ChannelManager, with only one having proper pointers
 396                 // to the ChannelSigner. Ideally, the ChannelSigner would have a global reference to the Java
 397                 // implementation class, but that results in circular references. Instead, we need some ability to,
 398                 // while cloning ChannelSigners, add new references in the calling Java struct (ie ChannelMonitor) to
 399                 // the ChannelSigner.
 400                 this.ptr_to = orig.chan_manager;
 401             }
 402         }
 403
 404         TwoTuple<byte[], TwoTuple<Integer, TxOut>[]>[] connect_block(Block b, int height, long expected_monitor_update_len) {
 405             byte[] header = Arrays.copyOfRange(b.bitcoinSerialize(), 0, 80);
 406             TwoTuple<Long, byte[]>[] txn;
 407             if (b.hasTransactions()) {
 408                 assert b.getTransactions().size() == 1;
 409                 TwoTuple<Long, byte[]> txp = new TwoTuple<>((long) 0, b.getTransactions().get(0).bitcoinSerialize());
 410                 txn = new TwoTuple[]{txp};
 411             } else
 412                 txn = new TwoTuple[0];
 413             if (chain_monitor != null) {
 414                 chan_manager.as_Listen().block_connected(b.bitcoinSerialize(), height);
 415                 chain_monitor.as_Listen().block_connected(b.bitcoinSerialize(), height);
 416             } else {
 417                 chan_manager.as_Confirm().transactions_confirmed(header, txn, height);
 418                 chan_manager.as_Confirm().best_block_updated(header, height);
 419                 // Connect manually if we aren't using a ChainMonitor and are implementing Watch ourselves
 420                 synchronized (monitors) {
 421                     assert monitors.size() == 1;
 422                     for (ChannelMonitor mon : monitors.values()) {
 423                         TwoTuple<byte[], TwoTuple<Integer, TxOut>[]>[] ret = mon.block_connected(header, txn, height, tx_broadcaster, fee_estimator, logger);
 424                         assert ret.length == expected_monitor_update_len;
 425                         return ret;
 426                     }
 427                 }
 428             }
 429             return null;
 430         }
 431
 432         Event[] get_monitor_events(int expected_len) {
 433             if (use_chan_manager_constructor) {
 434                 while (true) {
 435                     synchronized (this.pending_manager_events) {
 436                         if (expected_len != 0 && this.pending_manager_events.size() == expected_len) {
 437                             break;
 438                         }
 439                     }
 440                     if (expected_len == 0) {
 441                         try { Thread.sleep(500); } catch (InterruptedException e) { assert false; }
 442                         break;
 443                     } else {
 444                         Thread.yield();
 445                     }
 446                 }
 447                 synchronized (this.pending_manager_events) {
 448                     Event[] res = this.pending_manager_events.toArray(new Event[0]);
 449                     this.pending_manager_events.clear();
 450                     assert res.length == expected_len;
 451                     return res;
 452                 }
 453             } else if (chain_monitor != null) {
 454                 ArrayList<Event> l = new ArrayList<Event>();
 455                 chain_monitor.as_EventsProvider().process_pending_events(EventHandler.new_impl(l::add));
 456                 assert l.size() == expected_len;
 457                 return l.toArray(new Event[0]);
 458             } else {
 459                 synchronized (monitors) {
 460                     assert monitors.size() == 1;
 461                     for (ChannelMonitor mon : monitors.values()) {
 462                         Event[] res = mon.get_and_clear_pending_events();
 463                         assert res.length == expected_len;
 464                         return res;
 465                     }
 466                     return null;
 467                 }
 468             }
 469         }
 470
 471         Event[] get_manager_events(int expected_len, Peer peer1, Peer peer2) {
 472             assert expected_len != 0;
 473             if (!use_nio_peer_handler) {
 474                 maybe_exchange_peer_messages(peer1, peer2);
 475             }
 476             Event[] res = new Event[0];
 477             if (use_chan_manager_constructor) {
 478                 while (res.length < expected_len) {
 479                     synchronized (this.pending_manager_events) {
 480                         res = this.pending_manager_events.toArray(res);
 481                         assert res.length == expected_len || res.length == 0; // We don't handle partial results
 482                         this.pending_manager_events.clear();
 483                         if (res.length < expected_len) {
 484                             try { this.pending_manager_events.wait(); } catch (InterruptedException e) { assert false; }
 485                         }
 486                     }
 487                 }
 488             } else {
 489                 ArrayList<Event> l = new ArrayList<Event>();
 490                 while (l.size() < expected_len) {
 491                     Thread.yield();
 492                     if (use_nio_peer_handler) {
 493                         peer1.nio_peer_handler.check_events();
 494                         peer2.nio_peer_handler.check_events();
 495                     }
 496                     chan_manager.as_EventsProvider().process_pending_events(EventHandler.new_impl(l::add));
 497                     assert l.size() == expected_len || l.size() == 0; // We don't handle partial results
 498                 }
 499                 return l.toArray(new Event[0]);
 500             }
 501             assert res.length == expected_len;
 502             return res;
 503         }
 504     }
 505
 506     static class DescriptorHolder { SocketDescriptor val; }
 507
 508     boolean running = false;
 509     final LinkedList<Runnable> runqueue = new LinkedList();
 510     boolean ran = false;
 511     Thread t = new Thread(() -> {
 512             while (true) {
 513                 try {
 514                     Runnable r;
 515                     synchronized (runqueue) {
 516                         while (runqueue.isEmpty()) {
 517                             runqueue.wait();
 518                         }
 519                         running = true;
 520                         r = runqueue.pollFirst();
 521                     }
 522                     r.run();
 523                     synchronized (runqueue) {
 524                         running = false;
 525                         runqueue.notifyAll();
 526                     }
 527                 } catch (InterruptedException e) {
 528                     return;
 529                 }
 530             }
 531     });
 532
 533     void maybe_exchange_peer_messages(Peer peer1, Peer peer2) {
 534         if (!use_nio_peer_handler) {
 535             synchronized (runqueue) {
 536                 ran = false;
 537             }
 538             while (true) {
 539                 peer1.peer_manager.process_events();
 540                 peer2.peer_manager.process_events();
 541                 synchronized (runqueue) {
 542                     if (runqueue.isEmpty() && !running) {
 543                         if (ran) {
 544                             ran = false;
 545                             continue;
 546                         } else { break; }
 547                     }
 548                     try { runqueue.wait(); } catch (InterruptedException e) { assert false; }
 549                 }
 550             }
 551         } else if (!use_chan_manager_constructor) {
 552             peer1.nio_peer_handler.check_events();
 553             peer2.nio_peer_handler.check_events();
 554         }
 555     }
 556     void do_read_event(PeerManager pm, SocketDescriptor descriptor, byte[] data) {
 557         if (!t.isAlive()) t.start();
 558         synchronized (runqueue) {
 559             ran = true;
 560             runqueue.add(() -> {
 561                 Result_boolPeerHandleErrorZ res = pm.read_event(descriptor, data);
 562                 assert res instanceof Result_boolPeerHandleErrorZ.Result_boolPeerHandleErrorZ_OK;
 563             });
 564             runqueue.notifyAll();
 565         }
 566         must_free_objs.add(new WeakReference<>(data));
 567     }
 568
 569     void connect_peers(final Peer peer1, final Peer peer2) {
 570         if (use_nio_peer_handler) {
 571             try {
 572                 peer1.nio_peer_handler.connect(peer2.chan_manager.get_our_node_id(), new InetSocketAddress("127.0.0.1", peer2.nio_port), 100);
 573             } catch (IOException e) { assert false; }
 574             while (peer1.peer_manager.get_peer_node_ids().length == 0 || peer2.peer_manager.get_peer_node_ids().length == 0) {
 575                 Thread.yield();
 576             }
 577         } else {
 578             DescriptorHolder descriptor1 = new DescriptorHolder();
 579             DescriptorHolder descriptor1ref = descriptor1;
 580             SocketDescriptor descriptor2 = SocketDescriptor.new_impl(new SocketDescriptor.SocketDescriptorInterface() {
 581                 @Override
 582                 public long send_data(byte[] data, boolean resume_read) {
 583                     do_read_event(peer1.peer_manager, descriptor1ref.val, data);
 584                     return data.length;
 585                 }
 586
 587                 @Override public void disconnect_socket() { assert false; }
 588                 @Override public boolean eq(SocketDescriptor other_arg) { return other_arg.hash() == 2; }
 589                 @Override public long hash() { return 2; }
 590             });
 591
 592             descriptor1.val = SocketDescriptor.new_impl(new SocketDescriptor.SocketDescriptorInterface() {
 593                 @Override
 594                 public long send_data(byte[] data, boolean resume_read) {
 595                     do_read_event(peer2.peer_manager, descriptor2, data);
 596                     return data.length;
 597                 }
 598
 599                 @Override public void disconnect_socket() { assert false; }
 600                 @Override public boolean eq(SocketDescriptor other_arg) { return other_arg.hash() == 1; }
 601                 @Override public long hash() { return 1; }
 602             });
 603
 604             Result_CVec_u8ZPeerHandleErrorZ conn_res = peer1.peer_manager.new_outbound_connection(peer2.node_id, descriptor1.val);
 605             assert conn_res instanceof Result_CVec_u8ZPeerHandleErrorZ.Result_CVec_u8ZPeerHandleErrorZ_OK;
 606
 607             Result_NonePeerHandleErrorZ inbound_conn_res = peer2.peer_manager.new_inbound_connection(descriptor2);
 608             assert inbound_conn_res instanceof Result_NonePeerHandleErrorZ.Result_NonePeerHandleErrorZ_OK;
 609             do_read_event(peer2.peer_manager, descriptor2, ((Result_CVec_u8ZPeerHandleErrorZ.Result_CVec_u8ZPeerHandleErrorZ_OK) conn_res).res);
 610
 611             maybe_exchange_peer_messages(peer1, peer2);
 612         }
 613     }
 614
 615     TestState do_test_message_handler() throws InterruptedException {
 616         Peer peer1 = new Peer((byte) 1);
 617         Peer peer2 = new Peer((byte) 2);
 618
 619         connect_peers(peer1, peer2);
 620
 621         Result_NoneAPIErrorZ cc_res = peer1.chan_manager.create_channel(peer2.node_id, 100000, 1000, 42, null);
 622         assert cc_res instanceof Result_NoneAPIErrorZ.Result_NoneAPIErrorZ_OK;
 623
 624         // Previously, this was a SEGFAULT instead of get_funding_txo() returning null.
 625         ChannelDetails pre_funding_chan = peer1.chan_manager.list_channels()[0];
 626         assert pre_funding_chan.get_funding_txo() == null;
 627
 628         Event[] events = peer1.get_manager_events(1, peer1, peer2);
 629         assert events[0] instanceof Event.FundingGenerationReady;
 630         assert ((Event.FundingGenerationReady) events[0]).channel_value_satoshis == 100000;
 631         assert ((Event.FundingGenerationReady) events[0]).user_channel_id == 42;
 632         byte[] funding_spk = ((Event.FundingGenerationReady) events[0]).output_script;
 633         assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
 634         byte[] chan_id = ((Event.FundingGenerationReady) events[0]).temporary_channel_id;
 635
 636         NetworkParameters bitcoinj_net = NetworkParameters.fromID(NetworkParameters.ID_MAINNET);
 637
 638         Transaction funding = new Transaction(bitcoinj_net);
 639         funding.addInput(new TransactionInput(bitcoinj_net, funding, new byte[0]));
 640         funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
 641         funding.getInput(0).getWitness().setPush(0, new byte[]{0x1});
 642         funding.addOutput(Coin.SATOSHI.multiply(100000), new Script(funding_spk));
 643         Result_NoneAPIErrorZ funding_res = peer1.chan_manager.funding_transaction_generated(chan_id, funding.bitcoinSerialize());
 644         assert funding_res instanceof Result_NoneAPIErrorZ.Result_NoneAPIErrorZ_OK;
 645
 646         maybe_exchange_peer_messages(peer1, peer2);
 647         synchronized (peer1.broadcast_set) {
 648             while (peer1.broadcast_set.size() != 1) {
 649                 peer1.broadcast_set.wait();
 650             }
 651         }
 652
 653         assert peer1.broadcast_set.size() == 1;
 654         assert Arrays.equals(peer1.broadcast_set.get(0), funding.bitcoinSerialize());
 655         peer1.broadcast_set.clear();
 656
 657         Block b = new Block(bitcoinj_net, 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
 658         peer1.connect_block(b, 1, 0);
 659         peer2.connect_block(b, 1, 0);
 660
 661         for (int height = 2; height < 10; height++) {
 662             b = new Block(bitcoinj_net, 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[0]));
 663             peer1.connect_block(b, height, 0);
 664             peer2.connect_block(b, height, 0);
 665         }
 666
 667         maybe_exchange_peer_messages(peer1, peer2);
 668         while (peer1.chan_manager.list_usable_channels().length != 1 || peer2.chan_manager.list_usable_channels().length != 1)
 669
 670         peer1.chan_manager.list_channels();
 671         ChannelDetails[] peer1_chans = peer1.chan_manager.list_usable_channels();
 672         ChannelDetails[] peer2_chans = peer2.chan_manager.list_usable_channels();
 673         assert peer1_chans.length == 1;
 674         assert peer2_chans.length == 1;
 675         assert peer1_chans[0].get_channel_value_satoshis() == 100000;
 676         assert peer1_chans[0].get_is_usable();
 677         Option_u64Z short_chan_id = peer1_chans[0].get_short_channel_id();
 678         assert short_chan_id instanceof Option_u64Z.Some;
 679         assert ((Option_u64Z.Some)short_chan_id).some == (1L << 40); // 0th output in the 0th transaction in the 1st block
 680         assert Arrays.equals(peer1_chans[0].get_channel_id(), funding.getTxId().getReversedBytes());
 681         assert Arrays.equals(peer2_chans[0].get_channel_id(), funding.getTxId().getReversedBytes());
 682
 683         Result_InvoiceSignOrCreationErrorZ invoice = UtilMethods.create_invoice_from_channelmanager(peer2.chan_manager, peer2.keys_interface, Currency.LDKCurrency_Bitcoin, Option_u64Z.none(), "Invoice Description");
 684         assert invoice instanceof Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK;
 685         System.out.println("Got invoice: " + ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.to_str());
 686
 687         Result_InvoiceNoneZ parsed_invoice = Invoice.from_str(((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.to_str());
 688         assert parsed_invoice instanceof Result_InvoiceNoneZ.Result_InvoiceNoneZ_OK;
 689         assert Arrays.equals(((Result_InvoiceNoneZ.Result_InvoiceNoneZ_OK) parsed_invoice).res.payment_hash(), ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.payment_hash());
 690         SignedRawInvoice signed_raw = ((Result_InvoiceNoneZ.Result_InvoiceNoneZ_OK) parsed_invoice).res.into_signed_raw();
 691         RawInvoice raw_invoice = signed_raw.raw_invoice();
 692         byte[] desc_hash = raw_invoice.hash();
 693         Description raw_invoice_description = raw_invoice.description();
 694         String description_string = raw_invoice_description.into_inner();
 695         assert description_string.equals("Invoice Description");
 696         byte[] payment_hash = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.payment_hash();
 697         byte[] payment_secret = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.payment_secret();
 698         byte[] dest_node_id = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.recover_payee_pub_key();
 699         assert Arrays.equals(dest_node_id, peer2.node_id);
 700         InvoiceFeatures invoice_features = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.features();
 701         RouteHint[] route_hints = ((Result_InvoiceSignOrCreationErrorZ.Result_InvoiceSignOrCreationErrorZ_OK) invoice).res.route_hints();
 702
 703         Route route;
 704         try (LockedNetworkGraph netgraph = peer1.router.read_locked_graph()) {
 705             NetworkGraph graph = netgraph.graph();
 706             Result_RouteLightningErrorZ route_res = UtilMethods.get_route(peer1.chan_manager.get_our_node_id(), graph, peer2.node_id, invoice_features, peer1_chans, route_hints, 10000000, 42, peer1.logger);
 707             assert route_res instanceof Result_RouteLightningErrorZ.Result_RouteLightningErrorZ_OK;
 708             route = ((Result_RouteLightningErrorZ.Result_RouteLightningErrorZ_OK) route_res).res;
 709         }
 710
 711         Result_NonePaymentSendFailureZ payment_res = peer1.chan_manager.send_payment(route, payment_hash, payment_secret);
 712         assert payment_res instanceof Result_NonePaymentSendFailureZ.Result_NonePaymentSendFailureZ_OK;
 713
 714         RouteHop[][] hops = new RouteHop[1][1];
 715         byte[] hop_pubkey = new byte[33];
 716         hop_pubkey[0] = 3;
 717         hop_pubkey[1] = 42;
 718         hops[0][0] = RouteHop.of(hop_pubkey, NodeFeatures.known(), 42, ChannelFeatures.known(), 100, 0);
 719         Route r2 = Route.of(hops);
 720         payment_res = peer1.chan_manager.send_payment(r2, payment_hash, payment_secret);
 721         assert payment_res instanceof Result_NonePaymentSendFailureZ.Result_NonePaymentSendFailureZ_Err;
 722
 723         if (reload_peers) {
 724             if (use_chan_manager_constructor) {
 725                 peer1.constructor.interrupt();
 726                 peer2.constructor.interrupt();
 727             } else if (use_nio_peer_handler) {
 728                 peer1.nio_peer_handler.interrupt();
 729                 peer2.nio_peer_handler.interrupt();
 730             }
 731             WeakReference<Peer> op1 = new WeakReference<Peer>(peer1);
 732             peer1 = new Peer(peer1);
 733             peer2 = new Peer(peer2);
 734             return new TestState(op1, peer1, peer2, b.getHash());
 735         }
 736         return new TestState(null, peer1, peer2, b.getHash());
 737     }
 738
 739     boolean cross_reload_ref_pollution = false;
 740     class TestState {
 741         private final WeakReference<Peer> ref_block;
 742         private final Peer peer1;
 743         private final Peer peer2;
 744         public Sha256Hash best_blockhash;
 745
 746         public TestState(WeakReference<Peer> ref_block, Peer peer1, Peer peer2, Sha256Hash best_blockhash) {
 747             this.ref_block = ref_block;
 748             this.peer1 = peer1;
 749             this.peer2 = peer2;
 750             this.best_blockhash = best_blockhash;
 751         }
 752     }
 753     void do_test_message_handler_b(TestState state) throws InterruptedException {
 754         GcCheck obj = new GcCheck();
 755         if (state.ref_block != null) {
 756             // Ensure the original peers get freed before we move on. Note that we have to be in a different function
 757             // scope to do so as the (at least current OpenJDK) JRE won't release anything created in the same scope.
 758             while (!cross_reload_ref_pollution && state.ref_block.get() != null) {
 759                 System.gc();
 760                 System.runFinalization();
 761             }
 762             connect_peers(state.peer1, state.peer2);
 763         }
 764
 765         Event[] events = state.peer2.get_manager_events(1, state.peer1, state.peer2);
 766         assert events[0] instanceof Event.PendingHTLCsForwardable;
 767         state.peer2.chan_manager.process_pending_htlc_forwards();
 768
 769         events = state.peer2.get_manager_events(1, state.peer1, state.peer2);
 770         assert events[0] instanceof Event.PaymentReceived;
 771         assert ((Event.PaymentReceived)events[0]).purpose instanceof PaymentPurpose.InvoicePayment;
 772         byte[] payment_preimage = ((PaymentPurpose.InvoicePayment)((Event.PaymentReceived)events[0]).purpose).payment_preimage;
 773         assert !Arrays.equals(payment_preimage, new byte[32]);
 774         state.peer2.chan_manager.claim_funds(payment_preimage);
 775
 776         events = state.peer1.get_manager_events(1, state.peer1, state.peer2);
 777         assert events[0] instanceof Event.PaymentSent;
 778         assert Arrays.equals(((Event.PaymentSent) events[0]).payment_preimage, payment_preimage);
 779
 780         if (use_nio_peer_handler) {
 781             // We receive PaymentSent immediately upon receipt of the payment preimage, but we expect to not have an
 782             // HTLC transaction to broadcast below, which requires a bit more time to fully complete the
 783             // commitment-transaction-update dance between both peers.
 784             Thread.sleep(100);
 785         }
 786
 787         ChannelDetails[] peer1_chans = state.peer1.chan_manager.list_channels();
 788
 789         if (nice_close) {
 790             Result_NoneAPIErrorZ close_res = state.peer1.chan_manager.close_channel(peer1_chans[0].get_channel_id());
 791             assert close_res instanceof Result_NoneAPIErrorZ.Result_NoneAPIErrorZ_OK;
 792             maybe_exchange_peer_messages(state.peer1, state.peer2);
 793             synchronized (state.peer1.broadcast_set) {
 794                 while (state.peer1.broadcast_set.size() != 1) state.peer1.broadcast_set.wait();
 795             }
 796             synchronized (state.peer2.broadcast_set) {
 797                 while (state.peer2.broadcast_set.size() != 1) state.peer2.broadcast_set.wait();
 798             }
 799
 800             assert state.peer1.broadcast_set.size() == 1;
 801             assert state.peer2.broadcast_set.size() == 1;
 802         } else {
 803             state.peer1.chan_manager.force_close_all_channels();
 804             maybe_exchange_peer_messages(state.peer1, state.peer2);
 805             synchronized (state.peer1.broadcast_set) {
 806                 while (state.peer1.broadcast_set.size() != 1) state.peer1.broadcast_set.wait();
 807             }
 808             synchronized (state.peer2.broadcast_set) {
 809                 while (state.peer2.broadcast_set.size() != 1) state.peer2.broadcast_set.wait();
 810             }
 811
 812             assert state.peer1.broadcast_set.size() == 1;
 813             assert state.peer2.broadcast_set.size() == 1;
 814
 815             NetworkParameters bitcoinj_net = NetworkParameters.fromID(NetworkParameters.ID_MAINNET);
 816             Transaction tx = new Transaction(bitcoinj_net, state.peer1.broadcast_set.getFirst());
 817             Block b = new Block(bitcoinj_net, 2, state.best_blockhash, Sha256Hash.ZERO_HASH, 42, 0, 0,
 818                     Arrays.asList(new Transaction[]{tx}));
 819             TwoTuple<byte[], TwoTuple<Integer, TxOut>[]>[] watch_outputs = state.peer2.connect_block(b, 10, 1);
 820             if (watch_outputs != null) { // We only process watch_outputs manually when we use a manually-build Watch impl
 821                 assert watch_outputs.length == 1;
 822                 assert Arrays.equals(watch_outputs[0].a, tx.getTxId().getReversedBytes());
 823                 assert watch_outputs[0].b.length == 2;
 824                 assert watch_outputs[0].b[0].a == 0;
 825                 assert watch_outputs[0].b[1].a == 1;
 826             }
 827
 828             for (int i = 11; i < 21; i++) {
 829                 b = new Block(bitcoinj_net, 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, new ArrayList<>());
 830                 state.peer2.connect_block(b, i, 0);
 831             }
 832
 833             Event[] broadcastable_event = state.peer2.get_monitor_events(1);
 834             for (ChannelMonitor mon : state.peer2.monitors.values()) {
 835                 // This used to be buggy and double-free, so go ahead and fetch them!
 836                 byte[][] txn = mon.get_latest_holder_commitment_txn(state.peer2.logger);
 837             }
 838             assert broadcastable_event.length == 1;
 839             assert broadcastable_event[0] instanceof Event.SpendableOutputs;
 840             if (state.peer2.explicit_keys_manager != null) {
 841                 TxOut[] additional_outputs = new TxOut[] { new TxOut(420, new byte[] { 0x42 }) };
 842                 Result_TransactionNoneZ tx_res = state.peer2.explicit_keys_manager.spend_spendable_outputs(((Event.SpendableOutputs) broadcastable_event[0]).outputs, additional_outputs, new byte[] {0x00}, 253);
 843                 assert tx_res instanceof Result_TransactionNoneZ.Result_TransactionNoneZ_OK;
 844                 Transaction built_tx = new Transaction(bitcoinj_net, ((Result_TransactionNoneZ.Result_TransactionNoneZ_OK) tx_res).res);
 845                 assert built_tx.getOutputs().size() == 2;
 846                 assert Arrays.equals(built_tx.getOutput(1).getScriptBytes(), new byte[]{0x00});
 847                 assert Arrays.equals(built_tx.getOutput(0).getScriptBytes(), new byte[]{0x42});
 848                 assert built_tx.getOutput(0).getValue().value == 420;
 849             }
 850         }
 851
 852         if (use_nio_peer_handler) {
 853             state.peer1.peer_manager.disconnect_by_node_id(state.peer2.chan_manager.get_our_node_id(), false);
 854             while (state.peer1.peer_manager.get_peer_node_ids().length != 0) Thread.yield();
 855             while (state.peer2.peer_manager.get_peer_node_ids().length != 0) Thread.yield();
 856             state.peer1.nio_peer_handler.interrupt();
 857             state.peer2.nio_peer_handler.interrupt();
 858         }
 859
 860         state.peer1.get_monitor_events(0);
 861         state.peer2.get_monitor_events(0);
 862
 863         if (use_chan_manager_constructor) {
 864             state.peer1.constructor.interrupt();
 865             state.peer2.constructor.interrupt();
 866         }
 867
 868         t.interrupt();
 869     }
 870
 871     java.util.LinkedList<WeakReference<Object>> must_free_objs = new java.util.LinkedList();
 872     int gc_count = 0;
 873     int gc_exp_count = 0;
 874     class GcCheck {
 875         GcCheck() { gc_exp_count += 1; }
 876         @Override
 877         protected void finalize() throws Throwable {
 878             gc_count += 1;
 879             super.finalize();
 880         }
 881     }
 882 }
 883 public class HumanObjectPeerTest {
 884     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 {
 885         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);
 886         HumanObjectPeerTestInstance.TestState state = instance.do_test_message_handler();
 887         instance.do_test_message_handler_b(state);
 888         return instance;
 889     }
 890     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 {
 891         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);
 892         while (instance.gc_count != instance.gc_exp_count) {
 893             System.gc();
 894             System.runFinalization();
 895         }
 896         for (WeakReference<Object> o : instance.must_free_objs)
 897             assert o.get() == null;
 898     }
 899     @Test
 900     public void test_message_handler() throws InterruptedException {
 901         for (int i = 0; i < (1 << 7) - 1; i++) {
 902             boolean nice_close =                   (i & (1 << 0)) != 0;
 903             boolean use_km_wrapper =               (i & (1 << 1)) != 0;
 904             boolean use_manual_watch =             (i & (1 << 2)) != 0;
 905             boolean reload_peers =                 (i & (1 << 3)) != 0;
 906             boolean break_cross_refs =             (i & (1 << 4)) != 0;
 907             boolean nio_peer_handler =             (i & (1 << 5)) != 0;
 908             boolean use_ignoring_routing_handler = (i & (1 << 6)) != 0;
 909             boolean use_chan_manager_constructor = (i & (1 << 7)) != 0;
 910             if (break_cross_refs && !reload_peers) {
 911                 // There are no cross refs to break without reloading peers.
 912                 continue;
 913             }
 914             if (use_chan_manager_constructor && (use_manual_watch || !nio_peer_handler)) {
 915                 // ChannelManagerConstructor requires a ChainMonitor as the Watch and creates a NioPeerHandler for us.
 916                 continue;
 917             }
 918             if (!use_chan_manager_constructor && use_ignoring_routing_handler) {
 919                 // We rely on the ChannelManagerConstructor to convert null into an IgnoringMessageHandler, so don't
 920                 // try to run with an IgnoringMessageHandler unless we're also using a ChannelManagerConstructor.
 921                 continue;
 922             }
 923             System.err.println("Running test with flags " + i);
 924             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);
 925         }
 926     }
 927
 928     // This is used in the test jar to test the built jar is runnable
 929     public static void main(String[] args) {
 930         try {
 931             new HumanObjectPeerTest().test_message_handler();
 932         } catch (Exception e) {
 933             System.err.println("Caught exception:");
 934             System.err.println(e);
 935             System.exit(1);
 936         }
 937     }
 938 }