_ 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.ArrayList;
  18 import java.util.Arrays;
  19 import java.util.HashMap;
  20 import java.util.LinkedList;
  21
  22 class HumanObjectPeerTestInstance {
  23     private final boolean nice_close;
  24     private final boolean use_km_wrapper;
  25     private final boolean use_manual_watch;
  26     private final boolean reload_peers;
  27     private final boolean break_cross_peer_refs;
  28     private final boolean use_nio_peer_handler;
  29
  30     HumanObjectPeerTestInstance(boolean nice_close, boolean use_km_wrapper, boolean use_manual_watch, boolean reload_peers, boolean break_cross_peer_refs, boolean use_nio_peer_handler) {
  31         this.nice_close = nice_close;
  32         this.use_km_wrapper = use_km_wrapper;
  33         this.use_manual_watch = use_manual_watch;
  34         this.reload_peers = reload_peers;
  35         this.break_cross_peer_refs = break_cross_peer_refs;
  36         this.use_nio_peer_handler = use_nio_peer_handler;
  37     }
  38
  39     class Peer {
  40         KeysInterface manual_keysif(KeysInterface underlying_if) {
  41             return KeysInterface.new_impl(new KeysInterface.KeysInterfaceInterface() {
  42                 @Override public byte[] get_node_secret() { return underlying_if.get_node_secret(); }
  43                 @Override public byte[] get_destination_script() { return underlying_if.get_destination_script(); }
  44                 @Override public byte[] get_shutdown_pubkey() { return underlying_if.get_shutdown_pubkey(); }
  45
  46                 @Override
  47                 public Sign get_channel_signer(boolean inbound, long channel_value_satoshis) {
  48                     Sign underlying_ck = underlying_if.get_channel_signer(inbound, channel_value_satoshis);
  49                     Sign.SignInterface si = new Sign.SignInterface() {
  50                         @Override
  51                         public byte[] get_per_commitment_point(long idx) {
  52                             return underlying_ck.get_per_commitment_point(idx);
  53                         }
  54
  55                         @Override
  56                         public byte[] release_commitment_secret(long idx) {
  57                             return underlying_ck.release_commitment_secret(idx);
  58                         }
  59
  60                         @Override
  61                         public byte[] channel_keys_id() {
  62                             return new byte[32];
  63                         }
  64
  65                         @Override
  66                         public Result_C2Tuple_SignatureCVec_SignatureZZNoneZ sign_counterparty_commitment(CommitmentTransaction commitment_tx) {
  67                             return underlying_ck.sign_counterparty_commitment(commitment_tx);
  68                         }
  69
  70                         @Override
  71                         public Result_C2Tuple_SignatureCVec_SignatureZZNoneZ sign_holder_commitment_and_htlcs(HolderCommitmentTransaction holder_commitment_tx) {
  72                             return underlying_ck.sign_holder_commitment_and_htlcs(holder_commitment_tx);
  73                         }
  74
  75                         @Override
  76                         public Result_SignatureNoneZ sign_justice_transaction(byte[] justice_tx, long input, long amount, byte[] per_commitment_key, HTLCOutputInCommitment htlc) {
  77                             return underlying_ck.sign_justice_transaction(justice_tx, input, amount, per_commitment_key, htlc);
  78                         }
  79
  80                         @Override
  81                         public Result_SignatureNoneZ sign_counterparty_htlc_transaction(byte[] htlc_tx, long input, long amount, byte[] per_commitment_point, HTLCOutputInCommitment htlc) {
  82                             return underlying_ck.sign_counterparty_htlc_transaction(htlc_tx, input, amount, per_commitment_point, htlc);
  83                         }
  84
  85                         @Override
  86                         public Result_SignatureNoneZ sign_closing_transaction(byte[] closing_tx) {
  87                             return underlying_ck.sign_closing_transaction(closing_tx);
  88                         }
  89
  90                         @Override
  91                         public Result_SignatureNoneZ sign_channel_announcement(UnsignedChannelAnnouncement msg) {
  92                             return underlying_ck.sign_channel_announcement(msg);
  93                         }
  94
  95                         @Override
  96                         public void ready_channel(ChannelTransactionParameters params) {
  97                             underlying_ck.ready_channel(params);
  98                         }
  99
 100                         @Override
 101                         public byte[] write() {
 102                             return underlying_ck.write();
 103                         }
 104                     };
 105                     Sign resp = Sign.new_impl(si, underlying_ck.get_pubkeys());
 106                     must_free_objs.add(new WeakReference<>(si));
 107                     must_free_objs.add(new WeakReference<>(resp));
 108                     must_free_objs.add(new WeakReference<>(underlying_ck));
 109                     return resp;
 110                 }
 111
 112                 @Override
 113                 public byte[] get_secure_random_bytes() {
 114                     return underlying_if.get_secure_random_bytes();
 115                 }
 116
 117                 @Override
 118                 public Result_SignDecodeErrorZ read_chan_signer(byte[] reader) {
 119                     return underlying_if.read_chan_signer(reader);
 120                 }
 121             });
 122         }
 123
 124         Watch get_manual_watch() {
 125             Watch.WatchInterface watch_impl = new Watch.WatchInterface() {
 126                 public Result_NoneChannelMonitorUpdateErrZ watch_channel(OutPoint funding_txo, ChannelMonitor monitor) {
 127                     synchronized (monitors) {
 128                         assert monitors.put(Arrays.toString(funding_txo.get_txid()), monitor) == null;
 129                     }
 130                     return new Result_NoneChannelMonitorUpdateErrZ.Result_NoneChannelMonitorUpdateErrZ_OK();
 131                 }
 132
 133                 public Result_NoneChannelMonitorUpdateErrZ update_channel(OutPoint funding_txo, ChannelMonitorUpdate update) {
 134                     synchronized (monitors) {
 135                         String txid = Arrays.toString(funding_txo.get_txid());
 136                         assert monitors.containsKey(txid);
 137                         Result_NoneMonitorUpdateErrorZ update_res = monitors.get(txid).update_monitor(update, tx_broadcaster, fee_estimator, logger);
 138                         assert update_res instanceof Result_NoneMonitorUpdateErrorZ.Result_NoneMonitorUpdateErrorZ_OK;
 139                     }
 140                     return new Result_NoneChannelMonitorUpdateErrZ.Result_NoneChannelMonitorUpdateErrZ_OK();
 141                 }
 142
 143                 @Override
 144                 public MonitorEvent[] release_pending_monitor_events() {
 145                     synchronized (monitors) {
 146                         assert monitors.size() <= 1;
 147                         for (ChannelMonitor mon : monitors.values()) {
 148                             return mon.get_and_clear_pending_monitor_events();
 149                         }
 150                     }
 151                     return new MonitorEvent[0];
 152                 }
 153             };
 154             Watch watch = Watch.new_impl(watch_impl);
 155             must_free_objs.add(new WeakReference<>(watch_impl));
 156             must_free_objs.add(new WeakReference<>(watch));
 157             return watch;
 158         }
 159
 160         NioPeerHandler nio_peer_handler;
 161         short nio_port;
 162         final byte seed;
 163         final Logger logger;
 164         final FeeEstimator fee_estimator;
 165         final BroadcasterInterface tx_broadcaster;
 166         final KeysInterface keys_interface;
 167         final ChainMonitor chain_monitor;
 168         final NetGraphMsgHandler router;
 169         final Watch chain_watch;
 170         ChannelManager chan_manager;
 171         EventsProvider chan_manager_events;
 172         PeerManager peer_manager;
 173         final HashMap<String, ChannelMonitor> monitors; // Wow I forgot just how terrible Java is - we can't put a byte array here.
 174         byte[] node_id;
 175         final LinkedList<byte[]> broadcast_set = new LinkedList<>();
 176
 177         private TwoTuple<OutPoint, byte[]> test_mon_roundtrip(ChannelMonitor mon) {
 178             // Because get_funding_txo() returns an OutPoint in a tuple that is a reference to an OutPoint inside the
 179             // ChannelMonitor, its a good test to ensure that the OutPoint isn't freed (or is cloned) before the
 180             // ChannelMonitor is. This used to be broken.
 181             Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ roundtrip_monitor = UtilMethods.constructor_BlockHashChannelMonitorZ_read(mon.write(), keys_interface);
 182             assert roundtrip_monitor instanceof Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK;
 183             TwoTuple<OutPoint, byte[]> funding_txo = ((Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK) roundtrip_monitor).res.b.get_funding_txo();
 184             System.gc(); System.runFinalization(); // Give the GC a chance to run.
 185             return funding_txo;
 186         }
 187
 188         private Peer(Object _dummy, byte seed) {
 189             logger = Logger.new_impl((String arg) -> System.out.println(seed + ": " + arg));
 190             fee_estimator = FeeEstimator.new_impl((confirmation_target -> 253));
 191             tx_broadcaster = BroadcasterInterface.new_impl(tx -> {
 192                 broadcast_set.add(tx);
 193             });
 194             monitors = new HashMap<>();
 195             this.seed = seed;
 196             Persist persister = Persist.new_impl(new Persist.PersistInterface() {
 197                 @Override
 198                 public Result_NoneChannelMonitorUpdateErrZ persist_new_channel(OutPoint id, ChannelMonitor data) {
 199                     synchronized (monitors) {
 200                         String key = Arrays.toString(id.to_channel_id());
 201                         assert monitors.put(key, data) == null;
 202                         TwoTuple<OutPoint, byte[]> res = test_mon_roundtrip(data);
 203                         assert Arrays.equals(res.a.get_txid(), id.get_txid());
 204                         assert res.a.get_index() == id.get_index();
 205                     }
 206                     return new Result_NoneChannelMonitorUpdateErrZ.Result_NoneChannelMonitorUpdateErrZ_OK();
 207                 }
 208
 209                 @Override
 210                 public Result_NoneChannelMonitorUpdateErrZ update_persisted_channel(OutPoint id, ChannelMonitorUpdate update, ChannelMonitor data) {
 211                     synchronized (monitors) {
 212                         String key = Arrays.toString(id.to_channel_id());
 213                         assert monitors.put(key, data) != null;
 214                         TwoTuple<OutPoint, byte[]> res = test_mon_roundtrip(data);
 215                         assert Arrays.equals(res.a.get_txid(), id.get_txid());
 216                         assert res.a.get_index() == id.get_index();
 217                     }
 218                     return new Result_NoneChannelMonitorUpdateErrZ.Result_NoneChannelMonitorUpdateErrZ_OK();
 219                 }
 220             });
 221             if (use_manual_watch) {
 222                 chain_watch = get_manual_watch();
 223                 chain_monitor = null;
 224             } else {
 225                 chain_monitor = ChainMonitor.constructor_new(null, tx_broadcaster, logger, fee_estimator, persister);
 226                 chain_watch = chain_monitor.as_Watch();
 227             }
 228
 229             byte[] key_seed = new byte[32];
 230             for (byte i = 0; i < 32; i++) {
 231                 key_seed[i] = (byte) (i ^ seed);
 232             }
 233             KeysManager keys = KeysManager.constructor_new(key_seed, System.currentTimeMillis() / 1000, (int) (System.currentTimeMillis() * 1000));
 234             if (use_km_wrapper) {
 235                 this.keys_interface = manual_keysif(keys.as_KeysInterface());
 236             } else {
 237                 this.keys_interface = keys.as_KeysInterface();
 238             }
 239             this.router = NetGraphMsgHandler.constructor_new(new byte[32], null, logger);
 240         }
 241         private void bind_nio() {
 242             if (!use_nio_peer_handler) return;
 243             try { this.nio_peer_handler = new NioPeerHandler(peer_manager); } catch (IOException e) { assert false; }
 244             for (short i = 10_000; true; i++) {
 245                 try {
 246                     nio_peer_handler.bind_listener(new InetSocketAddress("127.0.0.1", i));
 247                     nio_port = i;
 248                     break;
 249                 } catch (IOException e) { assert i < 10_500; }
 250             }
 251         }
 252         Peer(byte seed) {
 253             this(null, seed);
 254             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], 1);
 255             this.node_id = chan_manager.get_our_node_id();
 256             this.chan_manager_events = chan_manager.as_EventsProvider();
 257
 258             byte[] random_data = new byte[32];
 259             for (byte i = 0; i < 32; i++) {
 260                 random_data[i] = (byte) ((i ^ seed) ^ 0xf0);
 261             }
 262             this.peer_manager = PeerManager.constructor_new(chan_manager.as_ChannelMessageHandler(), router.as_RoutingMessageHandler(), keys_interface.get_node_secret(), random_data, logger);
 263             bind_nio();
 264             System.gc();
 265         }
 266         Object ptr_to;
 267         Peer(Peer orig) {
 268             this(null, orig.seed);
 269             if (!break_cross_peer_refs) {
 270                 ChannelMonitor[] monitors = new ChannelMonitor[1];
 271                 synchronized (monitors) {
 272                     assert orig.monitors.size() == 1;
 273                     monitors[0] = orig.monitors.values().stream().iterator().next();
 274                 }
 275                 byte[] serialized = orig.chan_manager.write();
 276                 Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ read_res =
 277                         UtilMethods.constructor_BlockHashChannelManagerZ_read(serialized, this.keys_interface, this.fee_estimator, this.chain_watch, this.tx_broadcaster, this.logger, UserConfig.constructor_default(), monitors);
 278                 assert read_res instanceof Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ.Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ_OK;
 279                 this.chan_manager = ((Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ.Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ_OK) read_res).res.b;
 280                 this.chain_watch.watch_channel(monitors[0].get_funding_txo().a, monitors[0]);
 281             } else {
 282                 final ArrayList<byte[]> channel_monitors = new ArrayList();
 283                 synchronized (monitors) {
 284                     assert orig.monitors.size() == 1;
 285                     channel_monitors.add(orig.monitors.values().stream().iterator().next().write());
 286                 }
 287                 byte[] serialized = orig.chan_manager.write();
 288                 try {
 289                     ChannelManagerConstructor constructed = new ChannelManagerConstructor(serialized, channel_monitors.toArray(new byte[1][]), this.keys_interface, this.fee_estimator, this.chain_watch, this.tx_broadcaster, this.logger);
 290                     this.chan_manager = constructed.channel_manager;
 291                     constructed.chain_sync_completed();
 292                 } catch (ChannelManagerConstructor.InvalidSerializedDataException e) {
 293                     assert false;
 294                 }
 295             }
 296             if (!break_cross_peer_refs && (use_manual_watch || use_km_wrapper)) {
 297                 // When we pass monitors[0] into chain_watch.watch_channel we create a reference from the new Peer to a
 298                 // field in the old peer, preventing freeing of the original Peer until the new Peer is freed. Thus, we
 299                 // shouldn't bother waiting for the original to be freed later on.
 300                 cross_reload_ref_pollution = true;
 301             }
 302             this.node_id = chan_manager.get_our_node_id();
 303             this.chan_manager_events = chan_manager.as_EventsProvider();
 304
 305             if (cross_reload_ref_pollution) {
 306                 // This really, really needs to be handled at the bindings layer, but its rather complicated -
 307                 // ChannelSigners can be cloned and passed around without java being involved, resulting in them being
 308                 // owned by both one or more ChannelMonitors and a ChannelManager, with only one having proper pointers
 309                 // to the ChannelSigner. Ideally, the ChannelSigner would have a global reference to the Java
 310                 // implementation class, but that results in circular references. Instead, we need some ability to,
 311                 // while cloning ChannelSigners, add new references in the calling Java struct (ie ChannelMonitor) to
 312                 // the ChannelSigner.
 313                 this.ptr_to = orig.chan_manager;
 314             }
 315
 316             byte[] random_data = new byte[32];
 317             for (byte i = 0; i < 32; i++) {
 318                 random_data[i] = (byte) ((i ^ seed) ^ 0xf0);
 319             }
 320             this.peer_manager = PeerManager.constructor_new(chan_manager.as_ChannelMessageHandler(), router.as_RoutingMessageHandler(), keys_interface.get_node_secret(), random_data, logger);
 321             bind_nio();
 322         }
 323
 324         TwoTuple<byte[], TwoTuple<Integer, TxOut>[]>[] connect_block(Block b, int height, long expected_monitor_update_len) {
 325             byte[] header = Arrays.copyOfRange(b.bitcoinSerialize(), 0, 80);
 326             TwoTuple<Long, byte[]>[] txn;
 327             if (b.hasTransactions()) {
 328                 assert b.getTransactions().size() == 1;
 329                 TwoTuple<Long, byte[]> txp = new TwoTuple<>((long) 1, b.getTransactions().get(0).bitcoinSerialize());
 330                 txn = new TwoTuple[]{txp};
 331             } else
 332                 txn = new TwoTuple[0];
 333             chan_manager.block_connected(header, txn, height);
 334             if (chain_monitor != null) {
 335                 chain_monitor.block_connected(header, txn, height);
 336             } else {
 337                 synchronized (monitors) {
 338                     assert monitors.size() == 1;
 339                     for (ChannelMonitor mon : monitors.values()) {
 340                         TwoTuple<byte[], TwoTuple<Integer, TxOut>[]>[] ret = mon.block_connected(header, txn, height, tx_broadcaster, fee_estimator, logger);
 341                         assert ret.length == expected_monitor_update_len;
 342                         return ret;
 343                     }
 344                 }
 345             }
 346             return null;
 347         }
 348
 349         Event[] get_monitor_events() {
 350             if (chain_monitor != null) {
 351                 return chain_monitor.as_EventsProvider().get_and_clear_pending_events();
 352             } else {
 353                 synchronized (monitors) {
 354                     assert monitors.size() == 1;
 355                     for (ChannelMonitor mon : monitors.values()) {
 356                         return mon.get_and_clear_pending_events();
 357                     }
 358                     return null;
 359                 }
 360             }
 361         }
 362
 363         Route get_route(byte[] dest_node, ChannelDetails[] our_chans) {
 364             try (LockedNetworkGraph netgraph = this.router.read_locked_graph()) {
 365                 NetworkGraph graph = netgraph.graph();
 366                 long res = bindings.get_route(this.node_id, graph._test_only_get_ptr(), dest_node, new long[]{our_chans[0]._test_only_get_ptr()},
 367                         new long[0], 1000, 42, this.logger._test_only_get_ptr());
 368                 assert bindings.LDKCResult_RouteLightningErrorZ_result_ok(res);
 369                 byte[] serialized_route = bindings.Route_write(bindings.LDKCResult_RouteLightningErrorZ_get_ok(res));
 370                 must_free_objs.add(new WeakReference<>(serialized_route));
 371                 Result_RouteDecodeErrorZ copy = Route.constructor_read(serialized_route);
 372                 assert copy instanceof Result_RouteDecodeErrorZ.Result_RouteDecodeErrorZ_OK;
 373                 bindings.CResult_RouteLightningErrorZ_free(res);
 374                 return ((Result_RouteDecodeErrorZ.Result_RouteDecodeErrorZ_OK) copy).res;
 375             }
 376         }
 377     }
 378
 379     static class DescriptorHolder { SocketDescriptor val; }
 380
 381     boolean running = false;
 382     final LinkedList<Runnable> runqueue = new LinkedList();
 383     boolean ran = false;
 384     Thread t = new Thread(() -> {
 385             while (true) {
 386                 try {
 387                     Runnable r;
 388                     synchronized (runqueue) {
 389                         while (runqueue.isEmpty()) {
 390                             runqueue.wait();
 391                         }
 392                         running = true;
 393                         r = runqueue.pollFirst();
 394                     }
 395                     r.run();
 396                     synchronized (runqueue) {
 397                         running = false;
 398                         runqueue.notifyAll();
 399                     }
 400                 } catch (InterruptedException e) {
 401                     return;
 402                 }
 403             }
 404     });
 405     void wait_events_processed(Peer peer1, Peer peer2) {
 406         if (use_nio_peer_handler) {
 407             peer1.nio_peer_handler.check_events();
 408             peer2.nio_peer_handler.check_events();
 409             try { Thread.sleep(400); } catch (InterruptedException e) { assert false; }
 410         } else {
 411             synchronized (runqueue) {
 412                 ran = false;
 413             }
 414             while (true) {
 415                 peer1.peer_manager.process_events();
 416                 peer2.peer_manager.process_events();
 417                 synchronized (runqueue) {
 418                     if (runqueue.isEmpty() && !running) {
 419                         if (ran) {
 420                             ran = false;
 421                             continue;
 422                         } else { break; }
 423                     }
 424                     try { runqueue.wait(); } catch (InterruptedException e) { assert false; }
 425                 }
 426             }
 427         }
 428     }
 429     void do_read_event(PeerManager pm, SocketDescriptor descriptor, byte[] data) {
 430         if (!t.isAlive()) t.start();
 431         synchronized (runqueue) {
 432             ran = true;
 433             runqueue.add(() -> {
 434                 Result_boolPeerHandleErrorZ res = pm.read_event(descriptor, data);
 435                 assert res instanceof Result_boolPeerHandleErrorZ.Result_boolPeerHandleErrorZ_OK;
 436             });
 437             runqueue.notifyAll();
 438         }
 439         must_free_objs.add(new WeakReference<>(data));
 440     }
 441
 442     void connect_peers(final Peer peer1, final Peer peer2) {
 443         if (use_nio_peer_handler) {
 444             try {
 445                 peer1.nio_peer_handler.connect(peer2.chan_manager.get_our_node_id(), new InetSocketAddress("127.0.0.1", peer2.nio_port));
 446             } catch (IOException e) { assert false; }
 447         } else {
 448             DescriptorHolder descriptor1 = new DescriptorHolder();
 449             DescriptorHolder descriptor1ref = descriptor1;
 450             SocketDescriptor descriptor2 = SocketDescriptor.new_impl(new SocketDescriptor.SocketDescriptorInterface() {
 451                 @Override
 452                 public long send_data(byte[] data, boolean resume_read) {
 453                     do_read_event(peer1.peer_manager, descriptor1ref.val, data);
 454                     return data.length;
 455                 }
 456
 457                 @Override public void disconnect_socket() { assert false; }
 458                 @Override public boolean eq(SocketDescriptor other_arg) { return other_arg.hash() == 2; }
 459                 @Override public long hash() { return 2; }
 460             });
 461
 462             descriptor1.val = SocketDescriptor.new_impl(new SocketDescriptor.SocketDescriptorInterface() {
 463                 @Override
 464                 public long send_data(byte[] data, boolean resume_read) {
 465                     do_read_event(peer2.peer_manager, descriptor2, data);
 466                     return data.length;
 467                 }
 468
 469                 @Override public void disconnect_socket() { assert false; }
 470                 @Override public boolean eq(SocketDescriptor other_arg) { return other_arg.hash() == 1; }
 471                 @Override public long hash() { return 1; }
 472             });
 473
 474             Result_CVec_u8ZPeerHandleErrorZ conn_res = peer1.peer_manager.new_outbound_connection(peer2.node_id, descriptor1.val);
 475             assert conn_res instanceof Result_CVec_u8ZPeerHandleErrorZ.Result_CVec_u8ZPeerHandleErrorZ_OK;
 476
 477             Result_NonePeerHandleErrorZ inbound_conn_res = peer2.peer_manager.new_inbound_connection(descriptor2);
 478             assert inbound_conn_res instanceof Result_NonePeerHandleErrorZ.Result_NonePeerHandleErrorZ_OK;
 479             do_read_event(peer2.peer_manager, descriptor2, ((Result_CVec_u8ZPeerHandleErrorZ.Result_CVec_u8ZPeerHandleErrorZ_OK) conn_res).res);
 480         }
 481     }
 482
 483     TestState do_test_message_handler() throws InterruptedException {
 484         Peer peer1 = new Peer((byte) 1);
 485         Peer peer2 = new Peer((byte) 2);
 486
 487         connect_peers(peer1, peer2);
 488         wait_events_processed(peer1, peer2);
 489
 490         Result_NoneAPIErrorZ cc_res = peer1.chan_manager.create_channel(peer2.node_id, 10000, 1000, 42, null);
 491         assert cc_res instanceof Result_NoneAPIErrorZ.Result_NoneAPIErrorZ_OK;
 492         wait_events_processed(peer1, peer2);
 493
 494         Event[] events = peer1.chan_manager_events.get_and_clear_pending_events();
 495         assert events.length == 1;
 496         assert events[0] instanceof Event.FundingGenerationReady;
 497         assert ((Event.FundingGenerationReady) events[0]).channel_value_satoshis == 10000;
 498         assert ((Event.FundingGenerationReady) events[0]).user_channel_id == 42;
 499         byte[] funding_spk = ((Event.FundingGenerationReady) events[0]).output_script;
 500         assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
 501         byte[] chan_id = ((Event.FundingGenerationReady) events[0]).temporary_channel_id;
 502
 503         NetworkParameters bitcoinj_net = NetworkParameters.fromID(NetworkParameters.ID_MAINNET);
 504
 505         Transaction funding = new Transaction(bitcoinj_net);
 506         funding.addInput(new TransactionInput(bitcoinj_net, funding, new byte[0]));
 507         funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
 508         funding.getInput(0).getWitness().setPush(0, new byte[]{0x1});
 509         funding.addOutput(Coin.SATOSHI.multiply(10000), new Script(funding_spk));
 510         peer1.chan_manager.funding_transaction_generated(chan_id, OutPoint.constructor_new(funding.getTxId().getReversedBytes(), (short) 0));
 511         wait_events_processed(peer1, peer2);
 512
 513         events = peer1.chan_manager_events.get_and_clear_pending_events();
 514         assert events.length == 1;
 515         assert events[0] instanceof Event.FundingBroadcastSafe;
 516         assert ((Event.FundingBroadcastSafe) events[0]).user_channel_id == 42;
 517
 518         Block b = new Block(bitcoinj_net, 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
 519         peer1.connect_block(b, 1, 0);
 520         peer2.connect_block(b, 1, 0);
 521
 522         for (int height = 2; height < 10; height++) {
 523             b = new Block(bitcoinj_net, 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[0]));
 524             peer1.connect_block(b, height, 0);
 525             peer2.connect_block(b, height, 0);
 526         }
 527         wait_events_processed(peer1, peer2);
 528
 529         peer1.chan_manager.list_channels();
 530         ChannelDetails[] peer1_chans = peer1.chan_manager.list_channels();
 531         ChannelDetails[] peer2_chans = peer2.chan_manager.list_channels();
 532         assert peer1_chans.length == 1;
 533         assert peer2_chans.length == 1;
 534         assert peer1_chans[0].get_channel_value_satoshis() == 10000;
 535         assert peer1_chans[0].get_is_live();
 536         assert Arrays.equals(peer1_chans[0].get_channel_id(), funding.getTxId().getReversedBytes());
 537         assert Arrays.equals(peer2_chans[0].get_channel_id(), funding.getTxId().getReversedBytes());
 538
 539         byte[] payment_preimage = new byte[32];
 540         for (int i = 0; i < 32; i++) payment_preimage[i] = (byte) (i ^ 0x0f);
 541         byte[] payment_hash = Sha256Hash.hash(payment_preimage);
 542         Route route = peer1.get_route(peer2.node_id, peer1_chans);
 543         Result_NonePaymentSendFailureZ payment_res = peer1.chan_manager.send_payment(route, payment_hash, new byte[32]);
 544         assert payment_res instanceof Result_NonePaymentSendFailureZ.Result_NonePaymentSendFailureZ_OK;
 545         wait_events_processed(peer1, peer2);
 546
 547         RouteHop[][] hops = new RouteHop[1][1];
 548         byte[] hop_pubkey = new byte[33];
 549         hop_pubkey[0] = 3;
 550         hop_pubkey[1] = 42;
 551         hops[0][0] = RouteHop.constructor_new(hop_pubkey, NodeFeatures.constructor_known(), 42, ChannelFeatures.constructor_known(), 100, 0);
 552         Route r2 = Route.constructor_new(hops);
 553         payment_res = peer1.chan_manager.send_payment(r2, payment_hash, new byte[32]);
 554         assert payment_res instanceof Result_NonePaymentSendFailureZ.Result_NonePaymentSendFailureZ_Err;
 555
 556         assert peer1.get_monitor_events().length == 0;
 557         assert peer2.get_monitor_events().length == 0;
 558
 559         if (reload_peers) {
 560             if (use_nio_peer_handler) {
 561                 peer1.nio_peer_handler.interrupt();
 562                 peer2.nio_peer_handler.interrupt();
 563             }
 564             WeakReference<Peer> op1 = new WeakReference<Peer>(peer1);
 565             peer1 = new Peer(peer1);
 566             peer2 = new Peer(peer2);
 567             return new TestState(op1, peer1, peer2, payment_preimage, b.getHash());
 568         }
 569         return new TestState(null, peer1, peer2, payment_preimage, b.getHash());
 570     }
 571
 572     boolean cross_reload_ref_pollution = false;
 573     class TestState {
 574         private final WeakReference<Peer> ref_block;
 575         private final Peer peer1;
 576         private final Peer peer2;
 577         private final byte[] payment_preimage;
 578         public Sha256Hash best_blockhash;
 579
 580         public TestState(WeakReference<Peer> ref_block, Peer peer1, Peer peer2, byte[] payment_preimage, Sha256Hash best_blockhash) {
 581             this.ref_block = ref_block;
 582             this.peer1 = peer1;
 583             this.peer2 = peer2;
 584             this.payment_preimage = payment_preimage;
 585             this.best_blockhash = best_blockhash;
 586         }
 587     }
 588     void do_test_message_handler_b(TestState state) {
 589         GcCheck obj = new GcCheck();
 590         if (state.ref_block != null) {
 591             // Ensure the original peers get freed before we move on. Note that we have to be in a different function
 592             // scope to do so as the (at least current OpenJDK) JRE won't release anything created in the same scope.
 593             while (!cross_reload_ref_pollution && state.ref_block.get() != null) {
 594                 System.gc();
 595                 System.runFinalization();
 596             }
 597             connect_peers(state.peer1, state.peer2);
 598             wait_events_processed(state.peer1, state.peer2);
 599         }
 600
 601         Event[] events = state.peer2.chan_manager_events.get_and_clear_pending_events();
 602         assert events.length == 1;
 603         assert events[0] instanceof Event.PendingHTLCsForwardable;
 604         state.peer2.chan_manager.process_pending_htlc_forwards();
 605
 606         events = state.peer2.chan_manager_events.get_and_clear_pending_events();
 607         assert events.length == 1;
 608         assert events[0] instanceof Event.PaymentReceived;
 609         state.peer2.chan_manager.claim_funds(state.payment_preimage, new byte[32], ((Event.PaymentReceived) events[0]).amt);
 610         wait_events_processed(state.peer1, state.peer2);
 611
 612         events = state.peer1.chan_manager_events.get_and_clear_pending_events();
 613         assert events.length == 1;
 614         assert events[0] instanceof Event.PaymentSent;
 615         assert Arrays.equals(((Event.PaymentSent) events[0]).payment_preimage, state.payment_preimage);
 616         wait_events_processed(state.peer1, state.peer2);
 617
 618         ChannelDetails[] peer1_chans = state.peer1.chan_manager.list_channels();
 619
 620         if (nice_close) {
 621             Result_NoneAPIErrorZ close_res = state.peer1.chan_manager.close_channel(peer1_chans[0].get_channel_id());
 622             assert close_res instanceof Result_NoneAPIErrorZ.Result_NoneAPIErrorZ_OK;
 623             wait_events_processed(state.peer1, state.peer2);
 624
 625             assert state.peer1.broadcast_set.size() == 1;
 626             assert state.peer2.broadcast_set.size() == 1;
 627         } else {
 628             state.peer1.chan_manager.force_close_all_channels();
 629             wait_events_processed(state.peer1, state.peer2);
 630
 631             assert state.peer1.broadcast_set.size() == 1;
 632             assert state.peer2.broadcast_set.size() == 0;
 633
 634             NetworkParameters bitcoinj_net = NetworkParameters.fromID(NetworkParameters.ID_MAINNET);
 635             Transaction tx = new Transaction(bitcoinj_net, state.peer1.broadcast_set.getFirst());
 636             Block b = new Block(bitcoinj_net, 2, state.best_blockhash, Sha256Hash.ZERO_HASH, 42, 0, 0,
 637                     Arrays.asList(new Transaction[]{tx}));
 638             TwoTuple<byte[], TwoTuple<Integer, TxOut>[]>[] watch_outputs = state.peer2.connect_block(b, 1, 1);
 639             if (watch_outputs != null) { // We only process watch_outputs manually when we use a manually-build Watch impl
 640                 assert watch_outputs.length == 1;
 641                 assert Arrays.equals(watch_outputs[0].a, tx.getTxId().getReversedBytes());
 642                 assert watch_outputs[0].b.length == 1;
 643             }
 644
 645             // This used to be buggy and double-free, so go ahead and fetch them!
 646             for (ChannelMonitor mon : state.peer2.monitors.values()) {
 647                 byte[][] txn = mon.get_latest_holder_commitment_txn(state.peer2.logger);
 648             }
 649         }
 650
 651         if (use_nio_peer_handler) {
 652             state.peer1.peer_manager.disconnect_by_node_id(state.peer2.chan_manager.get_our_node_id(), false);
 653             wait_events_processed(state.peer1, state.peer2);
 654             assert state.peer1.peer_manager.get_peer_node_ids().length == 0;
 655             assert state.peer2.peer_manager.get_peer_node_ids().length == 0;
 656             state.peer1.nio_peer_handler.interrupt();
 657             state.peer2.nio_peer_handler.interrupt();
 658         }
 659
 660         assert state.peer1.get_monitor_events().length == 0;
 661         assert state.peer2.get_monitor_events().length == 0;
 662     }
 663
 664     java.util.LinkedList<WeakReference<Object>> must_free_objs = new java.util.LinkedList();
 665     boolean gc_ran = false;
 666     class GcCheck {
 667         @Override
 668         protected void finalize() throws Throwable {
 669             gc_ran = true;
 670             super.finalize();
 671         }
 672     }
 673 }
 674 public class HumanObjectPeerTest {
 675     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 {
 676         HumanObjectPeerTestInstance instance = new HumanObjectPeerTestInstance(nice_close, use_km_wrapper, use_manual_watch, reload_peers, break_cross_peer_refs, nio_peer_handler);
 677         HumanObjectPeerTestInstance.TestState state = instance.do_test_message_handler();
 678         instance.do_test_message_handler_b(state);
 679         return instance;
 680     }
 681     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 {
 682         HumanObjectPeerTestInstance instance = do_test_run(nice_close, use_km_wrapper, use_manual_watch, reload_peers, break_cross_peer_refs, nio_peer_handler);
 683         while (!instance.gc_ran) {
 684             System.gc();
 685             System.runFinalization();
 686         }
 687         for (WeakReference<Object> o : instance.must_free_objs)
 688             assert o.get() == null;
 689     }
 690     @Test
 691     public void test_message_handler() throws InterruptedException {
 692         for (int i = 0; i < (1 << 6) - 1; i++) {
 693             boolean nice_close =       (i & (1 << 0)) != 0;
 694             boolean use_km_wrapper =   (i & (1 << 1)) != 0;
 695             boolean use_manual_watch = (i & (1 << 2)) != 0;
 696             boolean reload_peers =     (i & (1 << 3)) != 0;
 697             boolean break_cross_refs = (i & (1 << 4)) != 0;
 698             boolean nio_peer_handler = (i & (1 << 5)) != 0;
 699             if (break_cross_refs && !reload_peers) {
 700                 // There are no cross refs to break without reloading peers.
 701                 continue;
 702             }
 703             System.err.println("Running test with flags " + i);
 704             do_test(nice_close, use_km_wrapper, use_manual_watch, reload_peers, break_cross_refs, nio_peer_handler);
 705         }
 706     }
 707 }