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