_ 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.core.Transaction;
   5 import org.bitcoinj.script.Script;
   6 import org.junit.jupiter.api.Test;
   7 import org.ldk.batteries.ChannelManagerConstructor;
   8 import org.ldk.batteries.NioPeerHandler;
   9 import org.ldk.enums.LDKNetwork;
  10 import org.ldk.impl.bindings;
  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
  28     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) {
  29         this.nice_close = nice_close;
  30         this.use_km_wrapper = use_km_wrapper;
  31         this.use_manual_watch = use_manual_watch;
  32         this.reload_peers = reload_peers;
  33         this.break_cross_peer_refs = break_cross_peer_refs;
  34         this.use_nio_peer_handler = use_nio_peer_handler;
  35         this.use_filter = use_filter;
  36     }
  37
  38     class Peer {
  39         KeysInterface manual_keysif(KeysInterface underlying_if) {
  40             return KeysInterface.new_impl(new KeysInterface.KeysInterfaceInterface() {
  41                 @Override public byte[] get_node_secret() { return underlying_if.get_node_secret(); }
  42                 @Override public byte[] get_destination_script() { return underlying_if.get_destination_script(); }
  43                 @Override public byte[] get_shutdown_pubkey() { return underlying_if.get_shutdown_pubkey(); }
  44
  45                 @Override
  46                 public Sign get_channel_signer(boolean inbound, long channel_value_satoshis) {
  47                     Sign underlying_ck = underlying_if.get_channel_signer(inbound, channel_value_satoshis);
  48                     Sign.SignInterface si = new Sign.SignInterface() {
  49                         @Override
  50                         public byte[] get_per_commitment_point(long idx) {
  51                             return underlying_ck.get_per_commitment_point(idx);
  52                         }
  53
  54                         @Override
  55                         public byte[] release_commitment_secret(long idx) {
  56                             return underlying_ck.release_commitment_secret(idx);
  57                         }
  58
  59                         @Override
  60                         public byte[] channel_keys_id() {
  61                             return new byte[32];
  62                         }
  63
  64                         @Override
  65                         public Result_C2Tuple_SignatureCVec_SignatureZZNoneZ sign_counterparty_commitment(CommitmentTransaction commitment_tx) {
  66                             return underlying_ck.sign_counterparty_commitment(commitment_tx);
  67                         }
  68
  69                         @Override
  70                         public Result_C2Tuple_SignatureCVec_SignatureZZNoneZ sign_holder_commitment_and_htlcs(HolderCommitmentTransaction holder_commitment_tx) {
  71                             return underlying_ck.sign_holder_commitment_and_htlcs(holder_commitment_tx);
  72                         }
  73
  74                         @Override
  75                         public Result_SignatureNoneZ sign_justice_transaction(byte[] justice_tx, long input, long amount, byte[] per_commitment_key, HTLCOutputInCommitment htlc) {
  76                             return underlying_ck.sign_justice_transaction(justice_tx, input, amount, per_commitment_key, htlc);
  77                         }
  78
  79                         @Override
  80                         public Result_SignatureNoneZ sign_counterparty_htlc_transaction(byte[] htlc_tx, long input, long amount, byte[] per_commitment_point, HTLCOutputInCommitment htlc) {
  81                             return underlying_ck.sign_counterparty_htlc_transaction(htlc_tx, input, amount, per_commitment_point, htlc);
  82                         }
  83
  84                         @Override
  85                         public Result_SignatureNoneZ sign_closing_transaction(byte[] closing_tx) {
  86                             return underlying_ck.sign_closing_transaction(closing_tx);
  87                         }
  88
  89                         @Override
  90                         public Result_SignatureNoneZ sign_channel_announcement(UnsignedChannelAnnouncement msg) {
  91                             return underlying_ck.sign_channel_announcement(msg);
  92                         }
  93
  94                         @Override
  95                         public void ready_channel(ChannelTransactionParameters params) {
  96                             underlying_ck.ready_channel(params);
  97                         }
  98
  99                         @Override
 100                         public byte[] write() {
 101                             return underlying_ck.write();
 102                         }
 103                     };
 104                     Sign resp = Sign.new_impl(si, underlying_ck.get_pubkeys());
 105                     must_free_objs.add(new WeakReference<>(si));
 106                     must_free_objs.add(new WeakReference<>(resp));
 107                     must_free_objs.add(new WeakReference<>(underlying_ck));
 108                     return resp;
 109                 }
 110
 111                 @Override
 112                 public byte[] get_secure_random_bytes() {
 113                     return underlying_if.get_secure_random_bytes();
 114                 }
 115
 116                 @Override
 117                 public Result_SignDecodeErrorZ read_chan_signer(byte[] reader) {
 118                     return underlying_if.read_chan_signer(reader);
 119                 }
 120             });
 121         }
 122
 123         Watch get_manual_watch() {
 124             Watch.WatchInterface watch_impl = new Watch.WatchInterface() {
 125                 public Result_NoneChannelMonitorUpdateErrZ watch_channel(OutPoint funding_txo, ChannelMonitor monitor) {
 126                     synchronized (monitors) {
 127                         assert monitors.put(Arrays.toString(funding_txo.get_txid()), monitor) == null;
 128                     }
 129                     return new Result_NoneChannelMonitorUpdateErrZ.Result_NoneChannelMonitorUpdateErrZ_OK();
 130                 }
 131
 132                 public Result_NoneChannelMonitorUpdateErrZ update_channel(OutPoint funding_txo, ChannelMonitorUpdate update) {
 133                     synchronized (monitors) {
 134                         String txid = Arrays.toString(funding_txo.get_txid());
 135                         assert monitors.containsKey(txid);
 136                         Result_NoneMonitorUpdateErrorZ update_res = monitors.get(txid).update_monitor(update, tx_broadcaster, fee_estimator, logger);
 137                         assert update_res instanceof Result_NoneMonitorUpdateErrorZ.Result_NoneMonitorUpdateErrorZ_OK;
 138                     }
 139                     return new Result_NoneChannelMonitorUpdateErrZ.Result_NoneChannelMonitorUpdateErrZ_OK();
 140                 }
 141
 142                 @Override
 143                 public MonitorEvent[] release_pending_monitor_events() {
 144                     synchronized (monitors) {
 145                         assert monitors.size() <= 1;
 146                         for (ChannelMonitor mon : monitors.values()) {
 147                             return mon.get_and_clear_pending_monitor_events();
 148                         }
 149                     }
 150                     return new MonitorEvent[0];
 151                 }
 152             };
 153             Watch watch = Watch.new_impl(watch_impl);
 154             must_free_objs.add(new WeakReference<>(watch_impl));
 155             must_free_objs.add(new WeakReference<>(watch));
 156             return watch;
 157         }
 158
 159         NioPeerHandler nio_peer_handler;
 160         short nio_port;
 161         final byte seed;
 162         final Logger logger;
 163         final FeeEstimator fee_estimator;
 164         final BroadcasterInterface tx_broadcaster;
 165         final KeysInterface keys_interface;
 166         final ChainMonitor chain_monitor;
 167         final NetGraphMsgHandler router;
 168         final Watch chain_watch;
 169         final HashSet<String> filter_additions;
 170         final Filter filter;
 171         ChannelManager chan_manager;
 172         EventsProvider chan_manager_events;
 173         PeerManager peer_manager;
 174         final HashMap<String, ChannelMonitor> monitors; // Wow I forgot just how terrible Java is - we can't put a byte array here.
 175         byte[] node_id;
 176         final LinkedList<byte[]> broadcast_set = new LinkedList<>();
 177         GcCheck obj = new GcCheck();
 178
 179         private TwoTuple<OutPoint, byte[]> test_mon_roundtrip(ChannelMonitor mon) {
 180             // Because get_funding_txo() returns an OutPoint in a tuple that is a reference to an OutPoint inside the
 181             // ChannelMonitor, its a good test to ensure that the OutPoint isn't freed (or is cloned) before the
 182             // ChannelMonitor is. This used to be broken.
 183             Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ roundtrip_monitor = UtilMethods.constructor_BlockHashChannelMonitorZ_read(mon.write(), keys_interface);
 184             assert roundtrip_monitor instanceof Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK;
 185             TwoTuple<OutPoint, byte[]> funding_txo = ((Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK) roundtrip_monitor).res.b.get_funding_txo();
 186             System.gc(); System.runFinalization(); // Give the GC a chance to run.
 187             return funding_txo;
 188         }
 189
 190         private Peer(Object _dummy, byte seed) {
 191             logger = Logger.new_impl((String arg) -> System.out.println(seed + ": " + arg));
 192             fee_estimator = FeeEstimator.new_impl((confirmation_target -> 253));
 193             tx_broadcaster = BroadcasterInterface.new_impl(tx -> {
 194                 broadcast_set.add(tx);
 195             });
 196             monitors = new HashMap<>();
 197             this.seed = seed;
 198             Persist persister = Persist.new_impl(new Persist.PersistInterface() {
 199                 @Override
 200                 public Result_NoneChannelMonitorUpdateErrZ persist_new_channel(OutPoint id, ChannelMonitor data) {
 201                     synchronized (monitors) {
 202                         String key = Arrays.toString(id.to_channel_id());
 203                         assert monitors.put(key, data) == null;
 204                         TwoTuple<OutPoint, byte[]> res = test_mon_roundtrip(data);
 205                         assert Arrays.equals(res.a.get_txid(), id.get_txid());
 206                         assert res.a.get_index() == id.get_index();
 207                     }
 208                     return new Result_NoneChannelMonitorUpdateErrZ.Result_NoneChannelMonitorUpdateErrZ_OK();
 209                 }
 210
 211                 @Override
 212                 public Result_NoneChannelMonitorUpdateErrZ update_persisted_channel(OutPoint id, ChannelMonitorUpdate update, ChannelMonitor data) {
 213                     synchronized (monitors) {
 214                         String key = Arrays.toString(id.to_channel_id());
 215                         assert monitors.put(key, data) != null;
 216                         TwoTuple<OutPoint, byte[]> res = test_mon_roundtrip(data);
 217                         assert Arrays.equals(res.a.get_txid(), id.get_txid());
 218                         assert res.a.get_index() == id.get_index();
 219                     }
 220                     return new Result_NoneChannelMonitorUpdateErrZ.Result_NoneChannelMonitorUpdateErrZ_OK();
 221                 }
 222             });
 223
 224             filter_additions = new HashSet<>();
 225             if (use_filter) {
 226                 this.filter = Filter.new_impl(new Filter.FilterInterface() {
 227                     @Override public void register_tx(byte[] txid, byte[] script_pubkey) {
 228                         filter_additions.add(Arrays.toString(txid));
 229                     }
 230                     @Override public void register_output(OutPoint outpoint, byte[] script_pubkey) {
 231                         filter_additions.add(Arrays.toString(outpoint.get_txid()) + ":" + outpoint.get_index());
 232                     }
 233                 });
 234             } else {
 235                 this.filter = null;
 236             }
 237
 238             if (use_manual_watch) {
 239                 chain_watch = get_manual_watch();
 240                 chain_monitor = null;
 241             } else {
 242                 chain_monitor = ChainMonitor.constructor_new(filter, tx_broadcaster, logger, fee_estimator, persister);
 243                 chain_watch = chain_monitor.as_Watch();
 244             }
 245
 246             byte[] key_seed = new byte[32];
 247             for (byte i = 0; i < 32; i++) {
 248                 key_seed[i] = (byte) (i ^ seed);
 249             }
 250             KeysManager keys = KeysManager.constructor_new(key_seed, System.currentTimeMillis() / 1000, (int) (System.currentTimeMillis() * 1000));
 251             if (use_km_wrapper) {
 252                 this.keys_interface = manual_keysif(keys.as_KeysInterface());
 253             } else {
 254                 this.keys_interface = keys.as_KeysInterface();
 255             }
 256             this.router = NetGraphMsgHandler.constructor_new(new byte[32], null, logger);
 257         }
 258         private void bind_nio() {
 259             if (!use_nio_peer_handler) return;
 260             try { this.nio_peer_handler = new NioPeerHandler(peer_manager); } catch (IOException e) { assert false; }
 261             for (short i = 10_000; true; i++) {
 262                 try {
 263                     nio_peer_handler.bind_listener(new InetSocketAddress("127.0.0.1", i));
 264                     nio_port = i;
 265                     break;
 266                 } catch (IOException e) { assert i < 10_500; }
 267             }
 268         }
 269         Peer(byte seed) {
 270             this(null, seed);
 271             this.chan_manager = ChannelManager.constructor_new(FeeEstimator.new_impl(confirmation_target -> 0), chain_watch, tx_broadcaster, logger, this.keys_interface, UserConfig.constructor_default(), LDKNetwork.LDKNetwork_Bitcoin, new byte[32], 0);
 272             this.node_id = chan_manager.get_our_node_id();
 273             this.chan_manager_events = chan_manager.as_EventsProvider();
 274
 275             byte[] random_data = new byte[32];
 276             for (byte i = 0; i < 32; i++) {
 277                 random_data[i] = (byte) ((i ^ seed) ^ 0xf0);
 278             }
 279             this.peer_manager = PeerManager.constructor_new(chan_manager.as_ChannelMessageHandler(), router.as_RoutingMessageHandler(), keys_interface.get_node_secret(), random_data, logger);
 280             bind_nio();
 281             System.gc();
 282         }
 283         Object ptr_to;
 284         Peer(Peer orig) {
 285             this(null, orig.seed);
 286             if (!break_cross_peer_refs) {
 287                 ChannelMonitor[] monitors = new ChannelMonitor[1];
 288                 synchronized (monitors) {
 289                     assert orig.monitors.size() == 1;
 290                     monitors[0] = orig.monitors.values().stream().iterator().next();
 291                 }
 292                 byte[] serialized = orig.chan_manager.write();
 293                 Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ read_res =
 294                         UtilMethods.constructor_BlockHashChannelManagerZ_read(serialized, this.keys_interface, this.fee_estimator, this.chain_watch, this.tx_broadcaster, this.logger, UserConfig.constructor_default(), monitors);
 295                 assert read_res instanceof Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ.Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ_OK;
 296                 this.chan_manager = ((Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ.Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ_OK) read_res).res.b;
 297                 this.chain_watch.watch_channel(monitors[0].get_funding_txo().a, monitors[0]);
 298             } else {
 299                 final ArrayList<byte[]> channel_monitors = new ArrayList();
 300                 synchronized (monitors) {
 301                     assert orig.monitors.size() == 1;
 302                     channel_monitors.add(orig.monitors.values().stream().iterator().next().write());
 303                 }
 304                 byte[] serialized = orig.chan_manager.write();
 305                 try {
 306                     ChannelManagerConstructor constructed = new ChannelManagerConstructor(serialized, channel_monitors.toArray(new byte[1][]), this.keys_interface, this.fee_estimator, this.chain_watch, this.filter, this.tx_broadcaster, this.logger);
 307                     this.chan_manager = constructed.channel_manager;
 308                     constructed.chain_sync_completed();
 309                     if (use_filter && !use_manual_watch) {
 310                         // With a manual watch we don't actually use the filter object at all.
 311                         assert this.filter_additions.containsAll(orig.filter_additions) &&
 312                                 orig.filter_additions.containsAll(this.filter_additions);
 313                     }
 314                 } catch (ChannelManagerConstructor.InvalidSerializedDataException e) {
 315                     assert false;
 316                 }
 317             }
 318             if (!break_cross_peer_refs && (use_manual_watch || use_km_wrapper)) {
 319                 // When we pass monitors[0] into chain_watch.watch_channel we create a reference from the new Peer to a
 320                 // field in the old peer, preventing freeing of the original Peer until the new Peer is freed. Thus, we
 321                 // shouldn't bother waiting for the original to be freed later on.
 322                 cross_reload_ref_pollution = true;
 323             }
 324             this.node_id = chan_manager.get_our_node_id();
 325             this.chan_manager_events = chan_manager.as_EventsProvider();
 326
 327             if (cross_reload_ref_pollution) {
 328                 // This really, really needs to be handled at the bindings layer, but its rather complicated -
 329                 // ChannelSigners can be cloned and passed around without java being involved, resulting in them being
 330                 // owned by both one or more ChannelMonitors and a ChannelManager, with only one having proper pointers
 331                 // to the ChannelSigner. Ideally, the ChannelSigner would have a global reference to the Java
 332                 // implementation class, but that results in circular references. Instead, we need some ability to,
 333                 // while cloning ChannelSigners, add new references in the calling Java struct (ie ChannelMonitor) to
 334                 // the ChannelSigner.
 335                 this.ptr_to = orig.chan_manager;
 336             }
 337
 338             byte[] random_data = new byte[32];
 339             for (byte i = 0; i < 32; i++) {
 340                 random_data[i] = (byte) ((i ^ seed) ^ 0xf0);
 341             }
 342             this.peer_manager = PeerManager.constructor_new(chan_manager.as_ChannelMessageHandler(), router.as_RoutingMessageHandler(), keys_interface.get_node_secret(), random_data, logger);
 343             bind_nio();
 344         }
 345
 346         TwoTuple<byte[], TwoTuple<Integer, TxOut>[]>[] connect_block(Block b, int height, long expected_monitor_update_len) {
 347             byte[] header = Arrays.copyOfRange(b.bitcoinSerialize(), 0, 80);
 348             TwoTuple<Long, byte[]>[] txn;
 349             if (b.hasTransactions()) {
 350                 assert b.getTransactions().size() == 1;
 351                 TwoTuple<Long, byte[]> txp = new TwoTuple<>((long) 1, b.getTransactions().get(0).bitcoinSerialize());
 352                 txn = new TwoTuple[]{txp};
 353             } else
 354                 txn = new TwoTuple[0];
 355             chan_manager.as_Listen().block_connected(b.bitcoinSerialize(), height);
 356             if (chain_monitor != null) {
 357                 chain_monitor.block_connected(header, txn, height);
 358             } else {
 359                 synchronized (monitors) {
 360                     assert monitors.size() == 1;
 361                     for (ChannelMonitor mon : monitors.values()) {
 362                         TwoTuple<byte[], TwoTuple<Integer, TxOut>[]>[] ret = mon.block_connected(header, txn, height, tx_broadcaster, fee_estimator, logger);
 363                         assert ret.length == expected_monitor_update_len;
 364                         return ret;
 365                     }
 366                 }
 367             }
 368             return null;
 369         }
 370
 371         Event[] get_monitor_events() {
 372             if (chain_monitor != null) {
 373                 return chain_monitor.as_EventsProvider().get_and_clear_pending_events();
 374             } else {
 375                 synchronized (monitors) {
 376                     assert monitors.size() == 1;
 377                     for (ChannelMonitor mon : monitors.values()) {
 378                         return mon.get_and_clear_pending_events();
 379                     }
 380                     return null;
 381                 }
 382             }
 383         }
 384
 385         Route get_route(byte[] dest_node, ChannelDetails[] our_chans) {
 386             try (LockedNetworkGraph netgraph = this.router.read_locked_graph()) {
 387                 NetworkGraph graph = netgraph.graph();
 388                 long res = bindings.get_route(this.node_id, graph._test_only_get_ptr(), dest_node, 0L, new long[]{our_chans[0]._test_only_get_ptr()},
 389                         new long[0], 1000, 42, this.logger._test_only_get_ptr());
 390                 assert bindings.LDKCResult_RouteLightningErrorZ_result_ok(res);
 391                 byte[] serialized_route = bindings.Route_write(bindings.LDKCResult_RouteLightningErrorZ_get_ok(res));
 392                 must_free_objs.add(new WeakReference<>(serialized_route));
 393                 Result_RouteDecodeErrorZ copy = Route.constructor_read(serialized_route);
 394                 assert copy instanceof Result_RouteDecodeErrorZ.Result_RouteDecodeErrorZ_OK;
 395                 bindings.CResult_RouteLightningErrorZ_free(res);
 396                 return ((Result_RouteDecodeErrorZ.Result_RouteDecodeErrorZ_OK) copy).res;
 397             }
 398         }
 399     }
 400
 401     static class DescriptorHolder { SocketDescriptor val; }
 402
 403     boolean running = false;
 404     final LinkedList<Runnable> runqueue = new LinkedList();
 405     boolean ran = false;
 406     Thread t = new Thread(() -> {
 407             while (true) {
 408                 try {
 409                     Runnable r;
 410                     synchronized (runqueue) {
 411                         while (runqueue.isEmpty()) {
 412                             runqueue.wait();
 413                         }
 414                         running = true;
 415                         r = runqueue.pollFirst();
 416                     }
 417                     r.run();
 418                     synchronized (runqueue) {
 419                         running = false;
 420                         runqueue.notifyAll();
 421                     }
 422                 } catch (InterruptedException e) {
 423                     return;
 424                 }
 425             }
 426     });
 427     void wait_events_processed(Peer peer1, Peer peer2) {
 428         if (use_nio_peer_handler) {
 429             peer1.nio_peer_handler.check_events();
 430             peer2.nio_peer_handler.check_events();
 431             try { Thread.sleep(400); } catch (InterruptedException e) { assert false; }
 432         } else {
 433             synchronized (runqueue) {
 434                 ran = false;
 435             }
 436             while (true) {
 437                 peer1.peer_manager.process_events();
 438                 peer2.peer_manager.process_events();
 439                 synchronized (runqueue) {
 440                     if (runqueue.isEmpty() && !running) {
 441                         if (ran) {
 442                             ran = false;
 443                             continue;
 444                         } else { break; }
 445                     }
 446                     try { runqueue.wait(); } catch (InterruptedException e) { assert false; }
 447                 }
 448             }
 449         }
 450     }
 451     void do_read_event(PeerManager pm, SocketDescriptor descriptor, byte[] data) {
 452         if (!t.isAlive()) t.start();
 453         synchronized (runqueue) {
 454             ran = true;
 455             runqueue.add(() -> {
 456                 Result_boolPeerHandleErrorZ res = pm.read_event(descriptor, data);
 457                 assert res instanceof Result_boolPeerHandleErrorZ.Result_boolPeerHandleErrorZ_OK;
 458             });
 459             runqueue.notifyAll();
 460         }
 461         must_free_objs.add(new WeakReference<>(data));
 462     }
 463
 464     void connect_peers(final Peer peer1, final Peer peer2) {
 465         if (use_nio_peer_handler) {
 466             try {
 467                 peer1.nio_peer_handler.connect(peer2.chan_manager.get_our_node_id(), new InetSocketAddress("127.0.0.1", peer2.nio_port), 100);
 468             } catch (IOException e) { assert false; }
 469         } else {
 470             DescriptorHolder descriptor1 = new DescriptorHolder();
 471             DescriptorHolder descriptor1ref = descriptor1;
 472             SocketDescriptor descriptor2 = SocketDescriptor.new_impl(new SocketDescriptor.SocketDescriptorInterface() {
 473                 @Override
 474                 public long send_data(byte[] data, boolean resume_read) {
 475                     do_read_event(peer1.peer_manager, descriptor1ref.val, data);
 476                     return data.length;
 477                 }
 478
 479                 @Override public void disconnect_socket() { assert false; }
 480                 @Override public boolean eq(SocketDescriptor other_arg) { return other_arg.hash() == 2; }
 481                 @Override public long hash() { return 2; }
 482             });
 483
 484             descriptor1.val = SocketDescriptor.new_impl(new SocketDescriptor.SocketDescriptorInterface() {
 485                 @Override
 486                 public long send_data(byte[] data, boolean resume_read) {
 487                     do_read_event(peer2.peer_manager, descriptor2, data);
 488                     return data.length;
 489                 }
 490
 491                 @Override public void disconnect_socket() { assert false; }
 492                 @Override public boolean eq(SocketDescriptor other_arg) { return other_arg.hash() == 1; }
 493                 @Override public long hash() { return 1; }
 494             });
 495
 496             Result_CVec_u8ZPeerHandleErrorZ conn_res = peer1.peer_manager.new_outbound_connection(peer2.node_id, descriptor1.val);
 497             assert conn_res instanceof Result_CVec_u8ZPeerHandleErrorZ.Result_CVec_u8ZPeerHandleErrorZ_OK;
 498
 499             Result_NonePeerHandleErrorZ inbound_conn_res = peer2.peer_manager.new_inbound_connection(descriptor2);
 500             assert inbound_conn_res instanceof Result_NonePeerHandleErrorZ.Result_NonePeerHandleErrorZ_OK;
 501             do_read_event(peer2.peer_manager, descriptor2, ((Result_CVec_u8ZPeerHandleErrorZ.Result_CVec_u8ZPeerHandleErrorZ_OK) conn_res).res);
 502         }
 503     }
 504
 505     TestState do_test_message_handler() throws InterruptedException {
 506         Peer peer1 = new Peer((byte) 1);
 507         Peer peer2 = new Peer((byte) 2);
 508
 509         connect_peers(peer1, peer2);
 510         wait_events_processed(peer1, peer2);
 511
 512         Result_NoneAPIErrorZ cc_res = peer1.chan_manager.create_channel(peer2.node_id, 10000, 1000, 42, null);
 513         assert cc_res instanceof Result_NoneAPIErrorZ.Result_NoneAPIErrorZ_OK;
 514         wait_events_processed(peer1, peer2);
 515
 516         Event[] events = peer1.chan_manager_events.get_and_clear_pending_events();
 517         assert events.length == 1;
 518         assert events[0] instanceof Event.FundingGenerationReady;
 519         assert ((Event.FundingGenerationReady) events[0]).channel_value_satoshis == 10000;
 520         assert ((Event.FundingGenerationReady) events[0]).user_channel_id == 42;
 521         byte[] funding_spk = ((Event.FundingGenerationReady) events[0]).output_script;
 522         assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
 523         byte[] chan_id = ((Event.FundingGenerationReady) events[0]).temporary_channel_id;
 524
 525         NetworkParameters bitcoinj_net = NetworkParameters.fromID(NetworkParameters.ID_MAINNET);
 526
 527         Transaction funding = new Transaction(bitcoinj_net);
 528         funding.addInput(new TransactionInput(bitcoinj_net, funding, new byte[0]));
 529         funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
 530         funding.getInput(0).getWitness().setPush(0, new byte[]{0x1});
 531         funding.addOutput(Coin.SATOSHI.multiply(10000), new Script(funding_spk));
 532         peer1.chan_manager.funding_transaction_generated(chan_id, OutPoint.constructor_new(funding.getTxId().getReversedBytes(), (short) 0));
 533         wait_events_processed(peer1, peer2);
 534
 535         events = peer1.chan_manager_events.get_and_clear_pending_events();
 536         assert events.length == 1;
 537         assert events[0] instanceof Event.FundingBroadcastSafe;
 538         assert ((Event.FundingBroadcastSafe) events[0]).user_channel_id == 42;
 539
 540         Block b = new Block(bitcoinj_net, 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
 541         peer1.connect_block(b, 1, 0);
 542         peer2.connect_block(b, 1, 0);
 543
 544         for (int height = 2; height < 10; height++) {
 545             b = new Block(bitcoinj_net, 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[0]));
 546             peer1.connect_block(b, height, 0);
 547             peer2.connect_block(b, height, 0);
 548         }
 549         wait_events_processed(peer1, peer2);
 550
 551         peer1.chan_manager.list_channels();
 552         ChannelDetails[] peer1_chans = peer1.chan_manager.list_channels();
 553         ChannelDetails[] peer2_chans = peer2.chan_manager.list_channels();
 554         assert peer1_chans.length == 1;
 555         assert peer2_chans.length == 1;
 556         assert peer1_chans[0].get_channel_value_satoshis() == 10000;
 557         assert peer1_chans[0].get_is_live();
 558         assert Arrays.equals(peer1_chans[0].get_channel_id(), funding.getTxId().getReversedBytes());
 559         assert Arrays.equals(peer2_chans[0].get_channel_id(), funding.getTxId().getReversedBytes());
 560
 561         byte[] payment_preimage = new byte[32];
 562         for (int i = 0; i < 32; i++) payment_preimage[i] = (byte) (i ^ 0x0f);
 563         byte[] payment_hash = Sha256Hash.hash(payment_preimage);
 564         Route route = peer1.get_route(peer2.node_id, peer1_chans);
 565         Result_NonePaymentSendFailureZ payment_res = peer1.chan_manager.send_payment(route, payment_hash, new byte[32]);
 566         assert payment_res instanceof Result_NonePaymentSendFailureZ.Result_NonePaymentSendFailureZ_OK;
 567         wait_events_processed(peer1, peer2);
 568
 569         RouteHop[][] hops = new RouteHop[1][1];
 570         byte[] hop_pubkey = new byte[33];
 571         hop_pubkey[0] = 3;
 572         hop_pubkey[1] = 42;
 573         hops[0][0] = RouteHop.constructor_new(hop_pubkey, NodeFeatures.constructor_known(), 42, ChannelFeatures.constructor_known(), 100, 0);
 574         Route r2 = Route.constructor_new(hops);
 575         payment_res = peer1.chan_manager.send_payment(r2, payment_hash, new byte[32]);
 576         assert payment_res instanceof Result_NonePaymentSendFailureZ.Result_NonePaymentSendFailureZ_Err;
 577
 578         assert peer1.get_monitor_events().length == 0;
 579         assert peer2.get_monitor_events().length == 0;
 580
 581         if (reload_peers) {
 582             if (use_nio_peer_handler) {
 583                 peer1.nio_peer_handler.interrupt();
 584                 peer2.nio_peer_handler.interrupt();
 585             }
 586             WeakReference<Peer> op1 = new WeakReference<Peer>(peer1);
 587             peer1 = new Peer(peer1);
 588             peer2 = new Peer(peer2);
 589             return new TestState(op1, peer1, peer2, payment_preimage, b.getHash());
 590         }
 591         return new TestState(null, peer1, peer2, payment_preimage, b.getHash());
 592     }
 593
 594     boolean cross_reload_ref_pollution = false;
 595     class TestState {
 596         private final WeakReference<Peer> ref_block;
 597         private final Peer peer1;
 598         private final Peer peer2;
 599         private final byte[] payment_preimage;
 600         public Sha256Hash best_blockhash;
 601
 602         public TestState(WeakReference<Peer> ref_block, Peer peer1, Peer peer2, byte[] payment_preimage, Sha256Hash best_blockhash) {
 603             this.ref_block = ref_block;
 604             this.peer1 = peer1;
 605             this.peer2 = peer2;
 606             this.payment_preimage = payment_preimage;
 607             this.best_blockhash = best_blockhash;
 608         }
 609     }
 610     void do_test_message_handler_b(TestState state) {
 611         GcCheck obj = new GcCheck();
 612         if (state.ref_block != null) {
 613             // Ensure the original peers get freed before we move on. Note that we have to be in a different function
 614             // scope to do so as the (at least current OpenJDK) JRE won't release anything created in the same scope.
 615             while (!cross_reload_ref_pollution && state.ref_block.get() != null) {
 616                 System.gc();
 617                 System.runFinalization();
 618             }
 619             connect_peers(state.peer1, state.peer2);
 620         }
 621         wait_events_processed(state.peer1, state.peer2);
 622
 623         Event[] events = state.peer2.chan_manager_events.get_and_clear_pending_events();
 624         assert events.length == 1;
 625         assert events[0] instanceof Event.PendingHTLCsForwardable;
 626         state.peer2.chan_manager.process_pending_htlc_forwards();
 627
 628         events = state.peer2.chan_manager_events.get_and_clear_pending_events();
 629         assert events.length == 1;
 630         assert events[0] instanceof Event.PaymentReceived;
 631         state.peer2.chan_manager.claim_funds(state.payment_preimage, new byte[32], ((Event.PaymentReceived) events[0]).amt);
 632         wait_events_processed(state.peer1, state.peer2);
 633
 634         events = state.peer1.chan_manager_events.get_and_clear_pending_events();
 635         assert events.length == 1;
 636         assert events[0] instanceof Event.PaymentSent;
 637         assert Arrays.equals(((Event.PaymentSent) events[0]).payment_preimage, state.payment_preimage);
 638         wait_events_processed(state.peer1, state.peer2);
 639
 640         ChannelDetails[] peer1_chans = state.peer1.chan_manager.list_channels();
 641
 642         if (nice_close) {
 643             Result_NoneAPIErrorZ close_res = state.peer1.chan_manager.close_channel(peer1_chans[0].get_channel_id());
 644             assert close_res instanceof Result_NoneAPIErrorZ.Result_NoneAPIErrorZ_OK;
 645             wait_events_processed(state.peer1, state.peer2);
 646
 647             assert state.peer1.broadcast_set.size() == 1;
 648             assert state.peer2.broadcast_set.size() == 1;
 649         } else {
 650             state.peer1.chan_manager.force_close_all_channels();
 651             wait_events_processed(state.peer1, state.peer2);
 652
 653             assert state.peer1.broadcast_set.size() == 1;
 654             assert state.peer2.broadcast_set.size() == 0;
 655
 656             NetworkParameters bitcoinj_net = NetworkParameters.fromID(NetworkParameters.ID_MAINNET);
 657             Transaction tx = new Transaction(bitcoinj_net, state.peer1.broadcast_set.getFirst());
 658             Block b = new Block(bitcoinj_net, 2, state.best_blockhash, Sha256Hash.ZERO_HASH, 42, 0, 0,
 659                     Arrays.asList(new Transaction[]{tx}));
 660             TwoTuple<byte[], TwoTuple<Integer, TxOut>[]>[] watch_outputs = state.peer2.connect_block(b, 10, 1);
 661             if (watch_outputs != null) { // We only process watch_outputs manually when we use a manually-build Watch impl
 662                 assert watch_outputs.length == 1;
 663                 assert Arrays.equals(watch_outputs[0].a, tx.getTxId().getReversedBytes());
 664                 assert watch_outputs[0].b.length == 1;
 665             }
 666
 667             // This used to be buggy and double-free, so go ahead and fetch them!
 668             for (ChannelMonitor mon : state.peer2.monitors.values()) {
 669                 byte[][] txn = mon.get_latest_holder_commitment_txn(state.peer2.logger);
 670             }
 671         }
 672
 673         if (use_nio_peer_handler) {
 674             state.peer1.peer_manager.disconnect_by_node_id(state.peer2.chan_manager.get_our_node_id(), false);
 675             wait_events_processed(state.peer1, state.peer2);
 676             assert state.peer1.peer_manager.get_peer_node_ids().length == 0;
 677             assert state.peer2.peer_manager.get_peer_node_ids().length == 0;
 678             state.peer1.nio_peer_handler.interrupt();
 679             state.peer2.nio_peer_handler.interrupt();
 680         }
 681
 682         assert state.peer1.get_monitor_events().length == 0;
 683         assert state.peer2.get_monitor_events().length == 0;
 684     }
 685
 686     java.util.LinkedList<WeakReference<Object>> must_free_objs = new java.util.LinkedList();
 687     int gc_count = 0;
 688     int gc_exp_count = 0;
 689     class GcCheck {
 690         GcCheck() { gc_exp_count += 1; }
 691         @Override
 692         protected void finalize() throws Throwable {
 693             gc_count += 1;
 694             super.finalize();
 695         }
 696     }
 697 }
 698 public class HumanObjectPeerTest {
 699     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) throws InterruptedException {
 700         HumanObjectPeerTestInstance instance = new HumanObjectPeerTestInstance(nice_close, use_km_wrapper, use_manual_watch, reload_peers, break_cross_peer_refs, nio_peer_handler, !nio_peer_handler);
 701         HumanObjectPeerTestInstance.TestState state = instance.do_test_message_handler();
 702         instance.do_test_message_handler_b(state);
 703         return instance;
 704     }
 705     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) throws InterruptedException {
 706         HumanObjectPeerTestInstance instance = do_test_run(nice_close, use_km_wrapper, use_manual_watch, reload_peers, break_cross_peer_refs, nio_peer_handler);
 707         while (instance.gc_count != instance.gc_exp_count) {
 708             System.gc();
 709             System.runFinalization();
 710         }
 711         for (WeakReference<Object> o : instance.must_free_objs)
 712             assert o.get() == null;
 713     }
 714     @Test
 715     public void test_message_handler() throws InterruptedException {
 716         for (int i = 0; i < (1 << 6) - 1; i++) {
 717             boolean nice_close =       (i & (1 << 0)) != 0;
 718             boolean use_km_wrapper =   (i & (1 << 1)) != 0;
 719             boolean use_manual_watch = (i & (1 << 2)) != 0;
 720             boolean reload_peers =     (i & (1 << 3)) != 0;
 721             boolean break_cross_refs = (i & (1 << 4)) != 0;
 722             boolean nio_peer_handler = (i & (1 << 5)) != 0;
 723             if (break_cross_refs && !reload_peers) {
 724                 // There are no cross refs to break without reloading peers.
 725                 continue;
 726             }
 727             System.err.println("Running test with flags " + i);
 728             do_test(nice_close, use_km_wrapper, use_manual_watch, reload_peers, break_cross_refs, nio_peer_handler);
 729         }
 730     }
 731 }