_ Git - ldk-java/blob - src/test/java/org/ldk/HumanObjectPeerTest.java

   1 package org.ldk;
   2
   3 import org.bitcoinj.base.BitcoinNetwork;
   4 import org.bitcoinj.base.Coin;
   5 import org.bitcoinj.base.Sha256Hash;
   6 import org.bitcoinj.core.*;
   7 import org.bitcoinj.params.BitcoinNetworkParams;
   8 import org.bitcoinj.script.Script;
   9 import org.junit.jupiter.api.Test;
  10 import org.ldk.batteries.ChannelManagerConstructor;
  11 import org.ldk.batteries.NioPeerHandler;
  12 import org.ldk.enums.*;
  13 import org.ldk.enums.Currency;
  14 import org.ldk.structs.*;
  15 import org.ldk.util.UInt128;
  16 import org.ldk.util.UInt5;
  17
  18 import java.io.FileReader;
  19 import java.io.IOException;
  20 import java.lang.ref.WeakReference;
  21 import java.net.InetSocketAddress;
  22 import java.util.*;
  23 import java.util.function.IntConsumer;
  24
  25 class HumanObjectPeerTestInstance {
  26     private final boolean nice_close;
  27     private final boolean use_km_wrapper;
  28     private final boolean use_full_km_wrapper;
  29     private final boolean use_manual_watch;
  30     private final boolean reload_peers;
  31     private final boolean break_cross_peer_refs;
  32     private final boolean use_nio_peer_handler;
  33     private final boolean use_filter;
  34     private final boolean use_ignore_handler;
  35     private final boolean use_chan_manager_constructor;
  36     private final boolean use_invoice_payer;
  37     TxOut gossip_txout = null;
  38
  39     HumanObjectPeerTestInstance(boolean nice_close, boolean use_km_wrapper, boolean use_full_km_wrapper, boolean use_manual_watch, boolean reload_peers, boolean break_cross_peer_refs, boolean use_nio_peer_handler, boolean use_filter, boolean use_ignore_handler, boolean use_chan_manager_constructor, boolean use_invoice_payer) {
  40         this.nice_close = nice_close;
  41         this.use_km_wrapper = use_km_wrapper;
  42         this.use_full_km_wrapper = use_full_km_wrapper;
  43         this.use_manual_watch = use_manual_watch;
  44         this.reload_peers = reload_peers;
  45         this.break_cross_peer_refs = break_cross_peer_refs;
  46         this.use_nio_peer_handler = use_nio_peer_handler;
  47         this.use_filter = use_filter;
  48         this.use_ignore_handler = use_ignore_handler;
  49         this.use_chan_manager_constructor = use_chan_manager_constructor;
  50         this.use_invoice_payer = use_invoice_payer;
  51     }
  52
  53     class Peer {
  54         NodeSigner manual_node_signer(KeysManager underlying_km) {
  55             NodeSigner underlying_ns = underlying_km.as_NodeSigner();
  56             must_free_objs.add(new WeakReference<>(underlying_ns));
  57             return NodeSigner.new_impl(new NodeSigner.NodeSignerInterface() {
  58                 @Override public byte[] get_inbound_payment_key_material() { return underlying_ns.get_inbound_payment_key_material(); }
  59                 @Override public Result_PublicKeyNoneZ get_node_id(Recipient recipient) { return underlying_ns.get_node_id(recipient); }
  60                 @Override public Result_ThirtyTwoBytesNoneZ ecdh(Recipient recipient, byte[] other_key, Option_BigEndianScalarZ tweak) {
  61                     return underlying_ns.ecdh(recipient, other_key, tweak);
  62                 }
  63                 @Override public Result_RecoverableSignatureNoneZ sign_invoice(byte[] hrp_bytes, UInt5[] invoice_data, Recipient recipient) {
  64                     return underlying_ns.sign_invoice(hrp_bytes, invoice_data, recipient);
  65                 }
  66                 @Override public Result_SchnorrSignatureNoneZ sign_bolt12_invoice_request(UnsignedInvoiceRequest invoice_request) {
  67                     return underlying_ns.sign_bolt12_invoice_request(invoice_request);
  68                 }
  69                 @Override public Result_SchnorrSignatureNoneZ sign_bolt12_invoice(UnsignedBolt12Invoice invoice) {
  70                     return underlying_ns.sign_bolt12_invoice(invoice);
  71                 }
  72                 @Override public Result_ECDSASignatureNoneZ sign_gossip_message(UnsignedGossipMessage msg) {
  73                     return underlying_ns.sign_gossip_message(msg);
  74                 }
  75             });
  76         }
  77         SignerProvider manual_signer_provider(KeysManager underlying_km) {
  78             SignerProvider underlying_sp = underlying_km.as_SignerProvider();
  79             must_free_objs.add(new WeakReference<>(underlying_sp));
  80             return SignerProvider.new_impl(new SignerProvider.SignerProviderInterface() {
  81                 @Override public Result_CVec_u8ZNoneZ get_destination_script(byte[] channel_keys_id) { return underlying_sp.get_destination_script(channel_keys_id); }
  82                 @Override public Result_ShutdownScriptNoneZ get_shutdown_scriptpubkey() { return underlying_sp.get_shutdown_scriptpubkey(); }
  83                 @Override public byte[] generate_channel_keys_id(boolean inbound, long channel_value_satoshis, UInt128 user_channel_id) {
  84                     return underlying_sp.generate_channel_keys_id(inbound, channel_value_satoshis, user_channel_id);
  85                 }
  86                 @Override
  87                 public WriteableEcdsaChannelSigner derive_channel_signer(long channel_value_satoshis, byte[] channel_keys_id) {
  88                     if (!use_full_km_wrapper) {
  89                         WriteableEcdsaChannelSigner underlying_signer = underlying_sp.derive_channel_signer(channel_value_satoshis, channel_keys_id);
  90                         must_free_objs.add(new WeakReference<>(underlying_signer));
  91                         return underlying_signer;
  92                     } else {
  93                         WriteableEcdsaChannelSigner underlying_wecs = underlying_sp.derive_channel_signer(channel_value_satoshis, channel_keys_id);
  94                         EcdsaChannelSigner underlying_ecs = underlying_wecs.get_ecdsa_channel_signer();
  95                         ChannelSigner underlying_cs = underlying_ecs.get_channel_signer();
  96                         ChannelSigner.ChannelSignerInterface csi = new ChannelSigner.ChannelSignerInterface() {
  97                             @Override public byte[] get_per_commitment_point(long idx) { return underlying_cs.get_per_commitment_point(idx); }
  98                             @Override public byte[] release_commitment_secret(long idx) { return underlying_cs.release_commitment_secret(idx); }
  99                             @Override public Result_NoneNoneZ validate_holder_commitment(HolderCommitmentTransaction holder_tx, byte[][] preimages) {
 100                                 return underlying_cs.validate_holder_commitment(holder_tx, preimages);
 101                             }
 102                             @Override public Result_NoneNoneZ validate_counterparty_revocation(long idx, byte[] secret) {
 103                                 return underlying_cs.validate_counterparty_revocation(idx, secret);
 104                             }
 105                             @Override public byte[] channel_keys_id() { return underlying_cs.channel_keys_id(); }
 106                             @Override public void provide_channel_parameters(ChannelTransactionParameters channel_parameters) {
 107                                 underlying_cs.provide_channel_parameters(channel_parameters);
 108                             }
 109                         };
 110                         EcdsaChannelSigner.EcdsaChannelSignerInterface ecsi = new EcdsaChannelSigner.EcdsaChannelSignerInterface() {
 111                             @Override public Result_C2Tuple_ECDSASignatureCVec_ECDSASignatureZZNoneZ sign_counterparty_commitment(CommitmentTransaction commitment_tx, byte[][] inbound_htlc_preimages, byte[][] outbound_htlc_preimages) {
 112                                 return underlying_ecs.sign_counterparty_commitment(commitment_tx, inbound_htlc_preimages, outbound_htlc_preimages);
 113                             }
 114                             @Override public Result_ECDSASignatureNoneZ sign_holder_commitment(HolderCommitmentTransaction commitment_tx) {
 115                                 return underlying_ecs.sign_holder_commitment(commitment_tx);
 116                             }
 117                             @Override public Result_ECDSASignatureNoneZ sign_justice_revoked_output(byte[] justice_tx, long input, long amount, byte[] per_commitment_key) {
 118                                 return underlying_ecs.sign_justice_revoked_output(justice_tx, input, amount, per_commitment_key);
 119                             }
 120                             @Override public Result_ECDSASignatureNoneZ sign_justice_revoked_htlc(byte[] justice_tx, long input, long amount, byte[] per_commitment_key, HTLCOutputInCommitment htlc) {
 121                                 return underlying_ecs.sign_justice_revoked_htlc(justice_tx, input, amount, per_commitment_key, htlc);
 122                             }
 123                             @Override public Result_ECDSASignatureNoneZ sign_holder_htlc_transaction(byte[] htlc_tx, long input, HTLCDescriptor htlc_descriptor) {
 124                                 return underlying_ecs.sign_holder_htlc_transaction(htlc_tx, input, htlc_descriptor);
 125                             }
 126                             @Override public Result_ECDSASignatureNoneZ sign_counterparty_htlc_transaction(byte[] htlc_tx, long input, long amount, byte[] per_commitment_point, HTLCOutputInCommitment htlc) {
 127                                 return underlying_ecs.sign_counterparty_htlc_transaction(htlc_tx, input, amount, per_commitment_point, htlc);
 128                             }
 129                             @Override public Result_ECDSASignatureNoneZ sign_closing_transaction(ClosingTransaction closing_tx) {
 130                                 return underlying_ecs.sign_closing_transaction(closing_tx);
 131                             }
 132                             @Override public Result_ECDSASignatureNoneZ sign_holder_anchor_input(byte[] anchor_tx, long input) {
 133                                 return underlying_ecs.sign_holder_anchor_input(anchor_tx, input);
 134                             }
 135                             @Override public Result_ECDSASignatureNoneZ sign_channel_announcement_with_funding_key(UnsignedChannelAnnouncement msg) {
 136                                 return underlying_ecs.sign_channel_announcement_with_funding_key(msg);
 137                             }
 138                         };
 139                         WriteableEcdsaChannelSigner.WriteableEcdsaChannelSignerInterface wecsi = new WriteableEcdsaChannelSigner.WriteableEcdsaChannelSignerInterface() {
 140                             @Override public byte[] write() { return underlying_wecs.write(); }
 141                         };
 142                         WriteableEcdsaChannelSigner resp = WriteableEcdsaChannelSigner.new_impl(wecsi, ecsi, csi, underlying_cs.get_pubkeys());
 143                         must_free_objs.add(new WeakReference<>(wecsi));
 144                         must_free_objs.add(new WeakReference<>(ecsi));
 145                         must_free_objs.add(new WeakReference<>(csi));
 146                         must_free_objs.add(new WeakReference<>(resp));
 147                         must_free_objs.add(new WeakReference<>(underlying_wecs));
 148                         must_free_objs.add(new WeakReference<>(underlying_ecs));
 149                         must_free_objs.add(new WeakReference<>(underlying_cs));
 150                         return resp;
 151                     }
 152                 }
 153
 154                 @Override
 155                 public Result_WriteableEcdsaChannelSignerDecodeErrorZ read_chan_signer(byte[] reader) {
 156                     return underlying_sp.read_chan_signer(reader);
 157                 }
 158             });
 159         }
 160
 161         Watch get_manual_watch() {
 162             Watch.WatchInterface watch_impl = new Watch.WatchInterface() {
 163                 public Result_ChannelMonitorUpdateStatusNoneZ watch_channel(OutPoint funding_txo, ChannelMonitor monitor) {
 164                     synchronized (monitors) {
 165                         assert monitors.put(Arrays.toString(funding_txo.get_txid()), monitor) == null;
 166                     }
 167                     return Result_ChannelMonitorUpdateStatusNoneZ.ok(ChannelMonitorUpdateStatus.LDKChannelMonitorUpdateStatus_Completed);
 168                 }
 169
 170                 public ChannelMonitorUpdateStatus update_channel(OutPoint funding_txo, ChannelMonitorUpdate update) {
 171                     synchronized (monitors) {
 172                         String txid = Arrays.toString(funding_txo.get_txid());
 173                         assert monitors.containsKey(txid);
 174                         Result_NoneNoneZ update_res = monitors.get(txid).update_monitor(update, tx_broadcaster, fee_estimator, logger);
 175                         assert update_res instanceof Result_NoneNoneZ.Result_NoneNoneZ_OK;
 176                     }
 177                     return ChannelMonitorUpdateStatus.LDKChannelMonitorUpdateStatus_Completed;
 178                 }
 179
 180                 @Override
 181                 public FourTuple_OutPointChannelIdCVec_MonitorEventZPublicKeyZ[] release_pending_monitor_events() {
 182                     synchronized (monitors) {
 183                         assert monitors.size() <= 1;
 184                         for (ChannelMonitor mon : monitors.values()) {
 185                             FourTuple_OutPointChannelIdCVec_MonitorEventZPublicKeyZ[] res = new FourTuple_OutPointChannelIdCVec_MonitorEventZPublicKeyZ[1];
 186                             res[0] = FourTuple_OutPointChannelIdCVec_MonitorEventZPublicKeyZ.of(mon.get_funding_txo().get_a(), ChannelId.of(new byte[32]), mon.get_and_clear_pending_monitor_events(), mon.get_counterparty_node_id());
 187                             return res;
 188                         }
 189                     }
 190                     return new FourTuple_OutPointChannelIdCVec_MonitorEventZPublicKeyZ[0];
 191                 }
 192             };
 193             Watch watch = Watch.new_impl(watch_impl);
 194             must_free_objs.add(new WeakReference<>(watch_impl));
 195             must_free_objs.add(new WeakReference<>(watch));
 196             return watch;
 197         }
 198
 199         UserConfig get_config() {
 200             ChannelHandshakeConfig channel_config = ChannelHandshakeConfig.with_default();
 201             channel_config.set_announced_channel(true);
 202             UserConfig config = UserConfig.with_default();
 203             config.set_channel_handshake_config(channel_config);
 204             return config;
 205         }
 206
 207         NioPeerHandler nio_peer_handler;
 208         short nio_port;
 209         final byte seed;
 210         final byte[] key_seed = new byte[32];
 211         final Logger logger;
 212         final FeeEstimator fee_estimator;
 213         final BroadcasterInterface tx_broadcaster;
 214         final KeysManager explicit_keys_manager;
 215         final NodeSigner node_signer;
 216         final SignerProvider signer_provider;
 217         final EntropySource entropy_source;
 218         final ChainMonitor chain_monitor;
 219         NetworkGraph net_graph;
 220         P2PGossipSync route_handler;
 221         final Watch chain_watch;
 222         final HashSet<String> filter_additions;
 223         Option_FilterZ filter;
 224         ChannelManager chan_manager;
 225         PeerManager peer_manager;
 226         final HashMap<String, ChannelMonitor> monitors; // Wow I forgot just how terrible Java is - we can't put a byte array here.
 227         byte[] node_id;
 228         byte[] connected_peer_node_id = null;
 229         final LinkedList<byte[]> broadcast_set = new LinkedList<>();
 230         final LinkedList<Event> pending_manager_events = new LinkedList<>();
 231         private final CustomMessageHandler custom_message_handler;
 232         final LinkedList<byte[]> received_custom_messages = new LinkedList<>();
 233         final LinkedList<byte[]> custom_messages_to_send = new LinkedList<>();
 234         ChannelManagerConstructor constructor = null;
 235         long network_graph_persists = 0;
 236         GcCheck obj = new GcCheck();
 237
 238         private ChannelMonitor test_mon_roundtrip(OutPoint expected_id, byte[] data) {
 239             // Because get_funding_txo() returns an OutPoint in a tuple that is a reference to an OutPoint inside the
 240             // ChannelMonitor, its a good test to ensure that the OutPoint isn't freed (or is cloned) before the
 241             // ChannelMonitor is. This used to be broken.
 242             Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ roundtrip_monitor = UtilMethods.C2Tuple_ThirtyTwoBytesChannelMonitorZ_read(data, this.entropy_source, this.signer_provider);
 243             assert roundtrip_monitor instanceof Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ.Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ_OK;
 244             must_free_objs.add(new WeakReference<>(roundtrip_monitor));
 245             TwoTuple_OutPointCVec_u8ZZ funding_txo = ((Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ.Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ_OK) roundtrip_monitor).res.get_b().get_funding_txo();
 246             must_free_objs.add(new WeakReference<>(funding_txo));
 247             System.gc(); System.runFinalization(); // Give the GC a chance to run.
 248             assert Arrays.equals(funding_txo.get_a().get_txid(), expected_id.get_txid());
 249             assert funding_txo.get_a().get_index() == expected_id.get_index();
 250             Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ roundtrip_two = UtilMethods.C2Tuple_ThirtyTwoBytesChannelMonitorZ_read(data, this.entropy_source, this.signer_provider);
 251             assert roundtrip_two instanceof Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ.Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ_OK;
 252             must_free_objs.add(new WeakReference<>(((Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ.Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ_OK) roundtrip_two).res.get_b()));
 253             must_free_objs.add(new WeakReference<>(((Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ.Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ_OK) roundtrip_two).res));
 254             must_free_objs.add(new WeakReference<>(roundtrip_two));
 255             return ((Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ.Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ_OK) roundtrip_two).res.get_b();
 256         }
 257
 258         private Peer(Object _dummy, byte seed) {
 259             logger = Logger.new_impl((org.ldk.structs.Record arg)->{
 260                 if (arg.get_level() == Level.LDKLevel_Error)
 261                     System.err.println(seed + ": " + arg.get_module_path() + " - " + arg.get_args());
 262                 else
 263                     System.out.println(seed + ": " + arg.get_module_path() + " - " + arg.get_args());
 264             });
 265             fee_estimator = FeeEstimator.new_impl((confirmation_target -> 253));
 266             tx_broadcaster = BroadcasterInterface.new_impl(txn -> {
 267                 synchronized (broadcast_set) {
 268                     for (byte[] tx : txn){
 269                         broadcast_set.add(tx);
 270                     }
 271                     broadcast_set.notifyAll();
 272                 }
 273             });
 274             monitors = new HashMap<>();
 275             this.seed = seed;
 276             Persist persister = Persist.new_impl(new Persist.PersistInterface() {
 277                 @Override
 278                 public ChannelMonitorUpdateStatus persist_new_channel(OutPoint id, ChannelMonitor data, MonitorUpdateId update_id) {
 279                     synchronized (monitors) {
 280                         String key = Arrays.toString(ChannelId.v1_from_funding_outpoint(id).get_a());
 281                         ChannelMonitor res = test_mon_roundtrip(id, data.write());
 282                         assert monitors.put(key, res) == null;
 283                     }
 284                     return ChannelMonitorUpdateStatus.LDKChannelMonitorUpdateStatus_Completed;
 285                 }
 286
 287                 @Override
 288                 public ChannelMonitorUpdateStatus update_persisted_channel(OutPoint id, ChannelMonitorUpdate update, ChannelMonitor data, MonitorUpdateId update_id) {
 289                     synchronized (monitors) {
 290                         String key = Arrays.toString(ChannelId.v1_from_funding_outpoint(id).get_a());
 291                         ChannelMonitor res = test_mon_roundtrip(id, data.write());
 292                         // Note that we use a serialization-roundtrip copy of data here, not the original, as this can
 293                         // expose the JVM JIT bug where it finalize()s things still being called.
 294                         assert monitors.put(key, res) != null;
 295                     }
 296                     return ChannelMonitorUpdateStatus.LDKChannelMonitorUpdateStatus_Completed;
 297                 }
 298
 299                 @Override
 300                 public void archive_persisted_channel(OutPoint channel_funding_outpoint) {
 301                     assert false;
 302                 }
 303             });
 304
 305             filter_additions = new HashSet<>();
 306             if (use_filter) {
 307                 this.filter = Option_FilterZ.some(Filter.new_impl(new Filter.FilterInterface() {
 308                     @Override public void register_tx(byte[] txid, byte[] script_pubkey) {
 309                         filter_additions.add(Arrays.toString(txid));
 310                     }
 311                     @Override public void register_output(WatchedOutput output) {
 312                         filter_additions.add(Arrays.toString(output.get_outpoint().get_txid()) + ":" + output.get_outpoint().get_index());
 313                     }
 314                 }));
 315             } else {
 316                 this.filter = Option_FilterZ.none();
 317             }
 318
 319             if (use_manual_watch) {
 320                 chain_watch = get_manual_watch();
 321                 chain_monitor = null;
 322             } else {
 323                 chain_monitor = ChainMonitor.of(filter, tx_broadcaster, logger, fee_estimator, persister);
 324                 chain_watch = chain_monitor.as_Watch();
 325             }
 326
 327             for (byte i = 0; i < 32; i++) {
 328                 key_seed[i] = (byte) (i ^ seed);
 329             }
 330             KeysManager keys = KeysManager.of(key_seed, System.currentTimeMillis() / 1000, (int) (System.currentTimeMillis() * 1000));
 331             if (use_km_wrapper) {
 332                 this.signer_provider = manual_signer_provider(keys);
 333                 this.node_signer = manual_node_signer(keys);
 334                 this.entropy_source = EntropySource.new_impl(new EntropySource.EntropySourceInterface() {
 335                     @Override public byte[] get_secure_random_bytes() { return keys.as_EntropySource().get_secure_random_bytes(); }
 336                 });
 337                 this.explicit_keys_manager = null;
 338             } else {
 339                 this.signer_provider = keys.as_SignerProvider();
 340                 this.entropy_source = keys.as_EntropySource();
 341                 this.node_signer = keys.as_NodeSigner();
 342                 this.explicit_keys_manager = keys;
 343             }
 344
 345             this.custom_message_handler = CustomMessageHandler.new_impl(new CustomMessageHandler.CustomMessageHandlerInterface() {
 346                 @Override
 347                 public Result_NoneLightningErrorZ handle_custom_message(Type msg, byte[] sender_node_id) {
 348                     synchronized (received_custom_messages) {
 349                         received_custom_messages.add(msg.write());
 350                         received_custom_messages.notifyAll();
 351                     }
 352                     return Result_NoneLightningErrorZ.ok();
 353                 }
 354
 355                 @Override
 356                 public TwoTuple_PublicKeyTypeZ[] get_and_clear_pending_msg() {
 357                     byte[][] bytes;
 358                     synchronized (custom_messages_to_send) {
 359                         bytes = custom_messages_to_send.toArray(new byte[0][0]);
 360                         custom_messages_to_send.clear();
 361                     }
 362                     TwoTuple_PublicKeyTypeZ[] ret = new TwoTuple_PublicKeyTypeZ[bytes.length];
 363                     for (int i = 0; i < bytes.length; i++) {
 364                         final int msg_idx = i;
 365                         ret[i] = TwoTuple_PublicKeyTypeZ.of(connected_peer_node_id, Type.new_impl(new Type.TypeInterface() {
 366                             @Override public short type_id() { return 4096; }
 367                             @Override public String debug_str() { return "Custom Java Message"; }
 368                             @Override public byte[] write() { return bytes[msg_idx]; }
 369                         }));
 370                     }
 371                     return ret;
 372                 }
 373                 @Override public NodeFeatures provided_node_features() {
 374                     return NodeFeatures.empty();
 375                 }
 376                 @Override public InitFeatures provided_init_features(byte[] their_node_id) {
 377                     return InitFeatures.empty();
 378                 }
 379             }, (message_type, buffer) -> {
 380                 assert message_type == 4096;
 381                 return Result_COption_TypeZDecodeErrorZ.ok(Option_TypeZ.some(Type.new_impl(new Type.TypeInterface() {
 382                     @Override public short type_id() { return 4096; }
 383                     @Override public String debug_str() { return "Custom Java-Decoded Message"; }
 384                     @Override public byte[] write() { return buffer; }
 385                 })));
 386             });
 387         }
 388         private void bind_nio() {
 389             if (!use_nio_peer_handler) return;
 390             if (use_chan_manager_constructor) {
 391                 this.nio_peer_handler = this.constructor.nio_peer_handler;
 392             } else {
 393                 try { this.nio_peer_handler = new NioPeerHandler(peer_manager); } catch (IOException e) { assert false; }
 394             }
 395             for (short i = 10_000; true; i++) {
 396                 try {
 397                     nio_peer_handler.bind_listener(new InetSocketAddress("127.0.0.1", i));
 398                     nio_port = i;
 399                     break;
 400                 } catch (IOException e) { assert i < 10_500; }
 401             }
 402         }
 403         private void setup_route_handler() {
 404             this.route_handler = P2PGossipSync.of(this.net_graph,
 405                 Option_UtxoLookupZ.some(UtxoLookup.new_impl((genesis_hash, short_channel_id) -> UtxoResult.sync(Result_TxOutUtxoLookupErrorZ.ok(gossip_txout)))), this.logger);
 406         }
 407         Peer(byte seed) {
 408             this(null, seed);
 409             this.net_graph = NetworkGraph.of(Network.LDKNetwork_Bitcoin, this.logger);
 410             this.setup_route_handler();
 411
 412             if (use_chan_manager_constructor) {
 413                 this.constructor = new ChannelManagerConstructor(Network.LDKNetwork_Bitcoin, get_config(), new byte[32], 0,
 414                         this.explicit_keys_manager.as_EntropySource(), this.explicit_keys_manager.as_NodeSigner(), this.explicit_keys_manager.as_SignerProvider(),
 415                         this.fee_estimator, this.chain_monitor, this.net_graph,
 416                         ProbabilisticScoringDecayParameters.with_default(), ProbabilisticScoringFeeParameters.with_default(),
 417                         (ChannelManagerConstructor.RouterWrapper)
 418                             (payer_node_id, route_params, first_hops, inflight_htlcs, payment_hash, payment_id, default_router) -> {
 419                                 assert payment_hash != null && payment_id != null;
 420                                 Router r = default_router.as_Router();
 421                                 must_free_objs.add(new WeakReference<>(r));
 422                                 return r.find_route_with_id(payer_node_id, route_params, first_hops, inflight_htlcs, payment_hash, payment_id);
 423                             },
 424                         this.tx_broadcaster, this.logger);
 425                 constructor.chain_sync_completed(new ChannelManagerConstructor.EventHandler() {
 426                     @Override public void handle_event(Event event) {
 427                         synchronized (pending_manager_events) {
 428                             pending_manager_events.add(event);
 429                             pending_manager_events.notifyAll();
 430                         }
 431                     }
 432                     @Override public void persist_manager(byte[] channel_manager_bytes) { assert channel_manager_bytes.length > 1; }
 433                     @Override public void persist_network_graph(byte[] graph_bytes) { assert graph_bytes.length > 1; network_graph_persists += 1; }
 434                     @Override public void persist_scorer(byte[] scorer_bytes) { assert scorer_bytes.length > 1; }
 435                 }, !use_ignore_handler);
 436                 this.chan_manager = constructor.channel_manager;
 437                 this.peer_manager = constructor.peer_manager;
 438                 must_free_objs.add(new WeakReference<>(this.chan_manager));
 439             } else {
 440                 Router router = Router.new_impl(new Router.RouterInterface() {
 441                     @Override
 442                     public Result_RouteLightningErrorZ find_route_with_id(byte[] payer, RouteParameters route_params, ChannelDetails[] first_hops, InFlightHtlcs inflight_htlcs, byte[] _payment_hash, byte[] _payment_id) {
 443                         return find_route(payer, route_params, first_hops, inflight_htlcs);
 444                     }
 445
 446                     @Override
 447                     public Result_CVec_C2Tuple_BlindedPayInfoBlindedPathZZNoneZ create_blinded_payment_paths(byte[] recipient, ChannelDetails[] first_hops, ReceiveTlvs tlvs, long amount_msats) {
 448                         return Result_CVec_C2Tuple_BlindedPayInfoBlindedPathZZNoneZ.err();
 449                     }
 450
 451                     @Override
 452                     public Result_RouteLightningErrorZ find_route(byte[] payer, RouteParameters params, ChannelDetails[] first_hops, InFlightHtlcs inflight_htlcs) {
 453                         while (true) {
 454                             try (ReadOnlyNetworkGraph graph = net_graph.read_only()) {
 455                                 assert graph.channel(424242) == null;
 456                                 long[] channels = graph.list_channels();
 457                                 if (channels.length != 1) {
 458                                     // If we're using a NioPeerHandler, the handling of announcement signatures and
 459                                     // channel broadcasting may be done async, so just wait until the channel shows up.
 460                                     assert use_nio_peer_handler;
 461                                     continue;
 462                                 }
 463                                 ChannelInfo chan = graph.channel(channels[0]);
 464                                 assert Arrays.equals(chan.get_node_one().as_slice(), chan.get_node_one().write());
 465                                 assert Arrays.equals(chan.get_node_one().as_slice(), chan_manager.get_our_node_id()) ||
 466                                         Arrays.equals(chan.get_node_two().as_slice(), chan_manager.get_our_node_id());
 467                                 break;
 468                             }
 469                         }
 470                         return UtilMethods.find_route(payer, params, net_graph, first_hops, logger,
 471                                 ScoreLookUp.new_impl((candidate, usage, params1) -> candidate.source().as_slice()[1]),
 472                                 ProbabilisticScoringFeeParameters.with_default(), new byte[32]);
 473                     }
 474                 }, new MessageRouter.MessageRouterInterface() {
 475                     @Override public Result_OnionMessagePathNoneZ find_path(byte[] sender, byte[][] peers, Destination destination) {
 476                         return Result_OnionMessagePathNoneZ.err();
 477                     }
 478                     @Override public Result_CVec_BlindedPathZNoneZ create_blinded_paths(byte[] recipient, byte[][] peers) {
 479                         return Result_CVec_BlindedPathZNoneZ.err();
 480                     }
 481                 });
 482                 ChainParameters params = ChainParameters.of(Network.LDKNetwork_Bitcoin, BestBlock.of(new byte[32], 0));
 483                 this.chan_manager = ChannelManager.of(this.fee_estimator, chain_watch, tx_broadcaster, router, logger,
 484                     this.entropy_source, this.node_signer, this.signer_provider, get_config(), params,
 485                         (int)(System.currentTimeMillis() / 1000));
 486                 this.peer_manager = PeerManager.of(chan_manager.as_ChannelMessageHandler(), route_handler.as_RoutingMessageHandler(),
 487                         IgnoringMessageHandler.of().as_OnionMessageHandler(), this.custom_message_handler, 0xdeadbeef,
 488                         this.entropy_source.get_secure_random_bytes(), logger, this.node_signer);
 489            }
 490
 491             this.node_id = chan_manager.get_our_node_id();
 492             this.filter = null;
 493             bind_nio();
 494             System.gc();
 495         }
 496
 497         Object ptr_to;
 498         Peer(Peer orig) {
 499             this(null, orig.seed);
 500             if (use_chan_manager_constructor) {
 501                 byte[][] monitors = {orig.monitors.values().stream().iterator().next().write()};
 502                 byte[] serialized = orig.chan_manager.write();
 503                 byte[] serialized_graph = orig.net_graph.write();
 504                 byte[] serialized_scorer = orig.constructor.scorer.write();
 505                 try {
 506                     Filter filter_nullable = null;
 507                     if (this.filter instanceof Option_FilterZ.Some) {
 508                         filter_nullable = ((Option_FilterZ.Some) this.filter).some;
 509                     }
 510                     this.constructor = new ChannelManagerConstructor(serialized, monitors, get_config(),
 511                         this.explicit_keys_manager.as_EntropySource(), this.explicit_keys_manager.as_NodeSigner(), this.explicit_keys_manager.as_SignerProvider(),
 512                         this.fee_estimator, this.chain_monitor, filter_nullable,
 513                             serialized_graph, ProbabilisticScoringDecayParameters.with_default(),
 514                             ProbabilisticScoringFeeParameters.with_default(), serialized_scorer, null,
 515                             this.tx_broadcaster, this.logger);
 516                     try {
 517                         // Test that ChannelManagerConstructor correctly rejects duplicate ChannelMonitors
 518                         byte[][] monitors_dupd = new byte[2][];
 519                         monitors_dupd[0] = monitors[0];
 520                         monitors_dupd[1] = monitors[0];
 521                         ChannelManagerConstructor constr = new ChannelManagerConstructor(serialized, monitors_dupd, get_config(),
 522                             this.explicit_keys_manager.as_EntropySource(), this.explicit_keys_manager.as_NodeSigner(), this.explicit_keys_manager.as_SignerProvider(),
 523                             this.fee_estimator, this.chain_monitor, filter_nullable,
 524                                 serialized_graph, ProbabilisticScoringDecayParameters.with_default(),
 525                                 ProbabilisticScoringFeeParameters.with_default(), serialized_scorer, null,
 526                                 this.tx_broadcaster, this.logger);
 527                         assert false;
 528                     } catch (ChannelManagerConstructor.InvalidSerializedDataException e) {}
 529                     this.net_graph = this.constructor.net_graph;
 530                     setup_route_handler();
 531                     constructor.chain_sync_completed(new ChannelManagerConstructor.EventHandler() {
 532                         @Override public void handle_event(Event event) {
 533                             synchronized (pending_manager_events) {
 534                                 pending_manager_events.add(event);
 535                                 pending_manager_events.notifyAll();
 536                             }
 537                         }
 538                         @Override public void persist_manager(byte[] channel_manager_bytes) { assert channel_manager_bytes.length > 1; }
 539                         @Override public void persist_network_graph(byte[] graph_bytes) { assert graph_bytes.length > 1; network_graph_persists += 1; }
 540                         @Override public void persist_scorer(byte[] scorer_bytes) { assert scorer_bytes.length > 1; }
 541                     }, !use_ignore_handler);
 542                     this.chan_manager = constructor.channel_manager;
 543                     this.peer_manager = constructor.peer_manager;
 544                     must_free_objs.add(new WeakReference<>(this.chan_manager));
 545                     // If we are using a ChannelManagerConstructor, we may have pending events waiting on the old peer
 546                     // which have been removed from the ChannelManager but which we still need to handle.
 547                     this.pending_manager_events.addAll(orig.pending_manager_events);
 548                     if (!this.pending_manager_events.isEmpty()) {
 549                         // However, this implies cross_reload_ref_pollution
 550                         cross_reload_ref_pollution = true;
 551                     }
 552                 } catch (ChannelManagerConstructor.InvalidSerializedDataException e) {
 553                     assert false;
 554                 }
 555             } else {
 556                 this.net_graph = NetworkGraph.of(Network.LDKNetwork_Bitcoin, this.logger);
 557                 Router router = Router.new_impl(new Router.RouterInterface() {
 558                     @Override
 559                     public Result_RouteLightningErrorZ find_route_with_id(byte[] payer, RouteParameters route_params, ChannelDetails[] first_hops, InFlightHtlcs inflight_htlcs, byte[] _payment_hash, byte[] _payment_id) {
 560                         return find_route(payer, route_params, first_hops, inflight_htlcs);
 561                     }
 562
 563                     @Override
 564                     public Result_CVec_C2Tuple_BlindedPayInfoBlindedPathZZNoneZ create_blinded_payment_paths(byte[] recipient, ChannelDetails[] first_hops, ReceiveTlvs tlvs, long amount_msats) {
 565                         return Result_CVec_C2Tuple_BlindedPayInfoBlindedPathZZNoneZ.err();
 566                     }
 567
 568                     @Override
 569                     public Result_RouteLightningErrorZ find_route(byte[] payer, RouteParameters params, ChannelDetails[] first_hops, InFlightHtlcs inflight_htlcs) {
 570                         while (true) {
 571                             try (ReadOnlyNetworkGraph graph = net_graph.read_only()) {
 572                                 assert graph.channel(424242) == null;
 573                                 long[] channels = graph.list_channels();
 574                                 if (channels.length != 1) {
 575                                     // If we're using a NioPeerHandler, the handling of announcement signatures and
 576                                     // channel broadcasting may be done async, so just wait until the channel shows up.
 577                                     assert use_nio_peer_handler;
 578                                     continue;
 579                                 }
 580                                 ChannelInfo chan = graph.channel(channels[0]);
 581                                 assert Arrays.equals(chan.get_node_one().as_slice(), chan.get_node_one().write());
 582                                 assert Arrays.equals(chan.get_node_one().as_slice(), chan_manager.get_our_node_id()) ||
 583                                         Arrays.equals(chan.get_node_two().as_slice(), chan_manager.get_our_node_id());
 584                                 break;
 585                             }
 586                         }
 587                         return UtilMethods.find_route(payer, params, net_graph, first_hops, logger,
 588                                 ScoreLookUp.new_impl((candidate, usage, params1) -> candidate.source().as_slice()[0]),
 589                                 ProbabilisticScoringFeeParameters.with_default(), new byte[32]);
 590                     }
 591                 }, new MessageRouter.MessageRouterInterface() {
 592                     @Override public Result_OnionMessagePathNoneZ find_path(byte[] sender, byte[][] peers, Destination destination) {
 593                         return Result_OnionMessagePathNoneZ.err();
 594                     }
 595                     @Override public Result_CVec_BlindedPathZNoneZ create_blinded_paths(byte[] recipient, byte[][] peers) {
 596                         return Result_CVec_BlindedPathZNoneZ.err();
 597                     }
 598                 });
 599                 this.setup_route_handler();
 600                 ChannelMonitor[] monitors = new ChannelMonitor[1];
 601                 assert orig.monitors.size() == 1;
 602                 if (!break_cross_peer_refs) {
 603                     monitors[0] = orig.monitors.values().stream().iterator().next();
 604                 } else {
 605                     byte[] serialized = orig.monitors.values().stream().iterator().next().write();
 606                     Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ res =
 607                             UtilMethods.C2Tuple_ThirtyTwoBytesChannelMonitorZ_read(serialized, this.entropy_source, this.signer_provider);
 608                     assert res instanceof Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ.Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ_OK;
 609                     monitors[0] = ((Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ.Result_C2Tuple_ThirtyTwoBytesChannelMonitorZDecodeErrorZ_OK) res).res.get_b();
 610                 }
 611                 byte[] serialized = orig.chan_manager.write();
 612                 Result_C2Tuple_ThirtyTwoBytesChannelManagerZDecodeErrorZ read_res =
 613                         UtilMethods.C2Tuple_ThirtyTwoBytesChannelManagerZ_read(serialized, this.entropy_source, this.node_signer, this.signer_provider, this.fee_estimator, this.chain_watch, this.tx_broadcaster, router, this.logger, get_config(), monitors);
 614                 assert read_res instanceof Result_C2Tuple_ThirtyTwoBytesChannelManagerZDecodeErrorZ.Result_C2Tuple_ThirtyTwoBytesChannelManagerZDecodeErrorZ_OK;
 615                 this.chan_manager = ((Result_C2Tuple_ThirtyTwoBytesChannelManagerZDecodeErrorZ.Result_C2Tuple_ThirtyTwoBytesChannelManagerZDecodeErrorZ_OK) read_res).res.get_b();
 616                 this.chain_watch.watch_channel(monitors[0].get_funding_txo().get_a(), monitors[0]);
 617                 this.peer_manager = PeerManager.of(chan_manager.as_ChannelMessageHandler(), route_handler.as_RoutingMessageHandler(),
 618                         IgnoringMessageHandler.of().as_OnionMessageHandler(), this.custom_message_handler,
 619                         (int)(System.currentTimeMillis() / 1000), this.entropy_source.get_secure_random_bytes(),
 620                         logger, this.node_signer);
 621                 if (!break_cross_peer_refs && (use_manual_watch || use_km_wrapper)) {
 622                     // When we pass monitors[0] into chain_watch.watch_channel we create a reference from the new Peer to a
 623                     // field in the old peer, preventing freeing of the original Peer until the new Peer is freed. Thus, we
 624                     // shouldn't bother waiting for the original to be freed later on.
 625                     cross_reload_ref_pollution = true;
 626                 }
 627             }
 628             this.node_id = chan_manager.get_our_node_id();
 629             bind_nio();
 630
 631             if (cross_reload_ref_pollution) {
 632                 // This really, really needs to be handled at the bindings layer, but its rather complicated -
 633                 // ChannelSigners can be cloned and passed around without java being involved, resulting in them being
 634                 // owned by both one or more ChannelMonitors and a ChannelManager, with only one having proper pointers
 635                 // to the ChannelSigner. Ideally, the ChannelSigner would have a global reference to the Java
 636                 // implementation class, but that results in circular references. Instead, we need some ability to,
 637                 // while cloning ChannelSigners, add new references in the calling Java struct (ie ChannelMonitor) to
 638                 // the ChannelSigner.
 639                 this.ptr_to = orig.chan_manager;
 640             }
 641             this.filter = null;
 642         }
 643
 644         TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[] connect_block(Block b, int height, long expected_monitor_update_len) {
 645             byte[] header = Arrays.copyOfRange(b.bitcoinSerialize(), 0, 80);
 646             TwoTuple_usizeTransactionZ[] txn;
 647             if (b.hasTransactions()) {
 648                 assert b.getTransactions().size() == 1;
 649                 TwoTuple_usizeTransactionZ txp = TwoTuple_usizeTransactionZ.of((long) 0, b.getTransactions().get(0).bitcoinSerialize());
 650                 txn = new TwoTuple_usizeTransactionZ[]{txp};
 651             } else
 652                 txn = new TwoTuple_usizeTransactionZ[0];
 653             if (chain_monitor != null) {
 654                 chan_manager.as_Listen().block_connected(b.bitcoinSerialize(), height);
 655                 chain_monitor.as_Listen().block_connected(b.bitcoinSerialize(), height);
 656             } else {
 657                 chan_manager.as_Confirm().transactions_confirmed(header, txn, height);
 658                 chan_manager.as_Confirm().best_block_updated(header, height);
 659                 // Connect manually if we aren't using a ChainMonitor and are implementing Watch ourselves
 660                 synchronized (monitors) {
 661                     assert monitors.size() == 1;
 662                     for (ChannelMonitor mon : monitors.values()) {
 663                         TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[] ret = mon.block_connected(header, txn, height, tx_broadcaster, fee_estimator, logger);
 664                         assert ret.length == expected_monitor_update_len;
 665                         return ret;
 666                     }
 667                 }
 668             }
 669             return null;
 670         }
 671
 672         Event[] get_monitor_events(int expected_len) {
 673             if (use_chan_manager_constructor) {
 674                 while (true) {
 675                     synchronized (this.pending_manager_events) {
 676                         if (expected_len != 0 && this.pending_manager_events.size() == expected_len) {
 677                             break;
 678                         }
 679                     }
 680                     if (expected_len == 0) {
 681                         try { Thread.sleep(500); } catch (InterruptedException e) { assert false; }
 682                         break;
 683                     } else {
 684                         Thread.yield();
 685                     }
 686                 }
 687                 synchronized (this.pending_manager_events) {
 688                     Event[] res = this.pending_manager_events.toArray(new Event[0]);
 689                     this.pending_manager_events.clear();
 690                     assert res.length == expected_len;
 691                     return res;
 692                 }
 693             } else if (chain_monitor != null) {
 694                 ArrayList<Event> l = new ArrayList<Event>();
 695                 chain_monitor.as_EventsProvider().process_pending_events(EventHandler.new_impl(l::add));
 696                 assert l.size() == expected_len;
 697                 return l.toArray(new Event[0]);
 698             } else {
 699                 synchronized (monitors) {
 700                     assert monitors.size() == 1;
 701                     for (ChannelMonitor mon : monitors.values()) {
 702                         ArrayList<Event> res = new ArrayList<Event>();
 703                         EventHandler handler = EventHandler.new_impl(new EventHandler.EventHandlerInterface() {
 704                             @Override public void handle_event(Event event) {
 705                                 res.add(event);
 706                             }
 707                         });
 708                         mon.process_pending_events(handler);
 709                         assert res.size() == expected_len;
 710                         return res.toArray(new Event[0]);
 711                     }
 712                     return null;
 713                 }
 714             }
 715         }
 716
 717         Event[] get_manager_events(int expected_len, Peer peer1, Peer peer2) {
 718             assert expected_len != 0;
 719             if (!use_nio_peer_handler) {
 720                 maybe_exchange_peer_messages(peer1, peer2);
 721             }
 722             Event[] res = new Event[0];
 723             if (use_chan_manager_constructor) {
 724                 while (res.length < expected_len) {
 725                     synchronized (this.pending_manager_events) {
 726                         if (this.pending_manager_events.size() >= expected_len) {
 727                             res = this.pending_manager_events.toArray(res);
 728                             assert res.length == expected_len;
 729                             this.pending_manager_events.clear();
 730                         }
 731                         if (res.length < expected_len) {
 732                             try { this.pending_manager_events.wait(); } catch (InterruptedException e) { assert false; }
 733                         }
 734                     }
 735                 }
 736             } else {
 737                 ArrayList<Event> l = new ArrayList<Event>();
 738                 while (l.size() < expected_len) {
 739                     Thread.yield();
 740                     if (use_nio_peer_handler) {
 741                         peer1.nio_peer_handler.check_events();
 742                         peer2.nio_peer_handler.check_events();
 743                     }
 744                     chan_manager.as_EventsProvider().process_pending_events(EventHandler.new_impl(l::add));
 745                 }
 746                 return l.toArray(new Event[0]);
 747             }
 748             assert res.length == expected_len;
 749             return res;
 750         }
 751     }
 752
 753     static class DescriptorHolder { SocketDescriptor val; }
 754
 755     boolean running = false;
 756     final LinkedList<Runnable> runqueue = new LinkedList();
 757     boolean ran = false;
 758     Thread t = new Thread(() -> {
 759             while (true) {
 760                 try {
 761                     Runnable r;
 762                     synchronized (runqueue) {
 763                         while (runqueue.isEmpty()) {
 764                             runqueue.wait();
 765                         }
 766                         running = true;
 767                         r = runqueue.pollFirst();
 768                     }
 769                     r.run();
 770                     synchronized (runqueue) {
 771                         running = false;
 772                         runqueue.notifyAll();
 773                     }
 774                 } catch (InterruptedException e) {
 775                     return;
 776                 }
 777             }
 778     });
 779
 780     void maybe_exchange_peer_messages(Peer peer1, Peer peer2) {
 781         if (!use_nio_peer_handler) {
 782             while (true) {
 783                 peer1.peer_manager.process_events();
 784                 peer2.peer_manager.process_events();
 785                 synchronized (runqueue) {
 786                     if (runqueue.isEmpty() && !running) {
 787                         if (ran) {
 788                             ran = false;
 789                             continue;
 790                         } else { break; }
 791                     }
 792                     try { runqueue.wait(); } catch (InterruptedException e) { assert false; }
 793                 }
 794             }
 795         } else if (!use_chan_manager_constructor) {
 796             peer1.nio_peer_handler.check_events();
 797             peer2.nio_peer_handler.check_events();
 798         }
 799     }
 800     void do_disconnect_event(PeerManager pm, SocketDescriptor descriptor) {
 801         if (!t.isAlive()) t.start();
 802         synchronized (runqueue) {
 803             ran = true;
 804             runqueue.add(() -> {
 805                 pm.socket_disconnected(descriptor);
 806             });
 807             runqueue.notifyAll();
 808         }
 809     }
 810     void do_read_event(PeerManager pm, SocketDescriptor descriptor, byte[] data) {
 811         if (!t.isAlive()) t.start();
 812         synchronized (runqueue) {
 813             ran = true;
 814             runqueue.add(() -> {
 815                 Result_boolPeerHandleErrorZ res = pm.read_event(descriptor, data);
 816                 assert res instanceof Result_boolPeerHandleErrorZ.Result_boolPeerHandleErrorZ_OK;
 817             });
 818             runqueue.notifyAll();
 819         }
 820         must_free_objs.add(new WeakReference<>(data));
 821     }
 822
 823     void connect_peers(final Peer peer1, final Peer peer2) {
 824         peer2.connected_peer_node_id = peer1.node_id;
 825         peer1.connected_peer_node_id = peer2.node_id;
 826         if (use_nio_peer_handler) {
 827             try {
 828                 peer1.nio_peer_handler.connect(peer2.chan_manager.get_our_node_id(), new InetSocketAddress("127.0.0.1", peer2.nio_port), 100);
 829             } catch (IOException e) { assert false; }
 830             while (peer1.peer_manager.list_peers().length == 0 || peer2.peer_manager.list_peers().length == 0) {
 831                 Thread.yield();
 832             }
 833         } else {
 834             DescriptorHolder descriptor1 = new DescriptorHolder();
 835             DescriptorHolder descriptor1ref = descriptor1;
 836             SocketDescriptor descriptor2 = SocketDescriptor.new_impl(new SocketDescriptor.SocketDescriptorInterface() {
 837                 @Override
 838                 public long send_data(byte[] data, boolean resume_read) {
 839                     do_read_event(peer1.peer_manager, descriptor1ref.val, data);
 840                     return data.length;
 841                 }
 842
 843                 @Override public void disconnect_socket() { do_disconnect_event(peer1.peer_manager, descriptor1ref.val); }
 844                 @Override public boolean eq(SocketDescriptor other_arg) { return other_arg.hash() == 2; }
 845                 @Override public long hash() { return 2; }
 846             });
 847
 848             descriptor1.val = SocketDescriptor.new_impl(new SocketDescriptor.SocketDescriptorInterface() {
 849                 @Override
 850                 public long send_data(byte[] data, boolean resume_read) {
 851                     do_read_event(peer2.peer_manager, descriptor2, data);
 852                     return data.length;
 853                 }
 854
 855                 @Override public void disconnect_socket() { do_disconnect_event(peer2.peer_manager, descriptor2); }
 856                 @Override public boolean eq(SocketDescriptor other_arg) { return other_arg.hash() == 1; }
 857                 @Override public long hash() { return 1; }
 858             });
 859
 860             Result_CVec_u8ZPeerHandleErrorZ conn_res = peer1.peer_manager.new_outbound_connection(peer2.node_id, descriptor1.val, Option_SocketAddressZ.none());
 861             assert conn_res instanceof Result_CVec_u8ZPeerHandleErrorZ.Result_CVec_u8ZPeerHandleErrorZ_OK;
 862
 863             Result_NonePeerHandleErrorZ inbound_conn_res = peer2.peer_manager.new_inbound_connection(descriptor2, Option_SocketAddressZ.none());
 864             assert inbound_conn_res instanceof Result_NonePeerHandleErrorZ.Result_NonePeerHandleErrorZ_OK;
 865             do_read_event(peer2.peer_manager, descriptor2, ((Result_CVec_u8ZPeerHandleErrorZ.Result_CVec_u8ZPeerHandleErrorZ_OK) conn_res).res);
 866
 867             maybe_exchange_peer_messages(peer1, peer2);
 868         }
 869     }
 870
 871     TestState do_test_message_handler() throws InterruptedException {
 872         Peer peer1 = new Peer((byte) 1);
 873         Peer peer2 = new Peer((byte) 2);
 874
 875         connect_peers(peer1, peer2);
 876
 877         UInt128 user_id = new UInt128(new byte[] {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16});
 878
 879         Result_ChannelIdAPIErrorZ cc_res = peer1.chan_manager.create_channel(peer2.node_id, 100000, 1000, user_id, null, null);
 880         assert cc_res instanceof Result_ChannelIdAPIErrorZ.Result_ChannelIdAPIErrorZ_OK;
 881
 882         // Previously, this was a SEGFAULT instead of get_funding_txo() returning null.
 883         ChannelDetails pre_funding_chan = peer1.chan_manager.list_channels()[0];
 884         assert pre_funding_chan.get_funding_txo() == null;
 885
 886         Event[] events = peer1.get_manager_events(1, peer1, peer2);
 887         assert events[0] instanceof Event.FundingGenerationReady;
 888         assert ((Event.FundingGenerationReady) events[0]).channel_value_satoshis == 100000;
 889         assert ((Event.FundingGenerationReady) events[0]).user_channel_id.equals(user_id);
 890         byte[] funding_spk = ((Event.FundingGenerationReady) events[0]).output_script;
 891         assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
 892         ChannelId chan_id = ((Event.FundingGenerationReady) events[0]).temporary_channel_id;
 893
 894         BitcoinNetworkParams bitcoinj_net = BitcoinNetworkParams.of(BitcoinNetwork.MAINNET);
 895
 896         Transaction funding_input = new Transaction(bitcoinj_net);
 897         funding_input.addOutput(Coin.SATOSHI.multiply(100000), new Script(funding_spk));
 898         Transaction funding = new Transaction(bitcoinj_net);
 899         funding.addInput(funding_input.getOutput(0));
 900         funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
 901         funding.getInput(0).getWitness().setPush(0, new byte[]{0x1});
 902         funding.addOutput(Coin.SATOSHI.multiply(100000), new Script(funding_spk));
 903         Result_NoneAPIErrorZ funding_res = peer1.chan_manager.funding_transaction_generated(chan_id, peer2.node_id, funding.bitcoinSerialize());
 904         assert funding_res instanceof Result_NoneAPIErrorZ.Result_NoneAPIErrorZ_OK;
 905
 906         gossip_txout = new TxOut(100000, funding_spk);
 907
 908         maybe_exchange_peer_messages(peer1, peer2);
 909         synchronized (peer1.broadcast_set) {
 910             while (peer1.broadcast_set.size() != 1) {
 911                 peer1.broadcast_set.wait();
 912             }
 913         }
 914
 915         events = peer1.get_manager_events(1, peer1, peer2);
 916         assert events[0] instanceof Event.ChannelPending;
 917
 918         events = peer2.get_manager_events(1, peer1, peer2);
 919         assert events[0] instanceof Event.ChannelPending;
 920
 921         assert peer1.broadcast_set.size() == 1;
 922         assert Arrays.equals(peer1.broadcast_set.get(0), funding.bitcoinSerialize());
 923         peer1.broadcast_set.clear();
 924
 925         Block b = new Block(bitcoinj_net, 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
 926         peer1.connect_block(b, 1, 0);
 927         peer2.connect_block(b, 1, 0);
 928
 929         for (int height = 2; height < 10; height++) {
 930             b = new Block(bitcoinj_net, 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[0]));
 931             peer1.connect_block(b, height, 0);
 932             peer2.connect_block(b, height, 0);
 933         }
 934
 935         maybe_exchange_peer_messages(peer1, peer2);
 936         while (peer1.chan_manager.list_usable_channels().length != 1 || peer2.chan_manager.list_usable_channels().length != 1) ;
 937
 938         events = peer1.get_manager_events(1, peer1, peer2);
 939         assert events[0] instanceof Event.ChannelReady;
 940
 941         events = peer2.get_manager_events(1, peer1, peer2);
 942         assert events[0] instanceof Event.ChannelReady;
 943
 944         ChannelDetails[] peer1_chans = peer1.chan_manager.list_usable_channels();
 945         ChannelDetails[] peer2_chans = peer2.chan_manager.list_usable_channels();
 946         assert peer1_chans.length == 1;
 947         assert peer2_chans.length == 1;
 948         assert peer1_chans[0].get_channel_value_satoshis() == 100000;
 949         assert peer1_chans[0].get_is_usable();
 950         Option_u64Z short_chan_id = peer1_chans[0].get_short_channel_id();
 951         assert short_chan_id instanceof Option_u64Z.Some;
 952         assert ((Option_u64Z.Some)short_chan_id).some == (1L << 40); // 0th output in the 0th transaction in the 1st block
 953         assert Arrays.equals(peer1_chans[0].get_channel_id().get_a(), funding.getTxId().getReversedBytes());
 954         assert Arrays.equals(peer2_chans[0].get_channel_id().get_a(), funding.getTxId().getReversedBytes());
 955
 956         // Generate a random invoice description to exercise the string conversion logic a good bit
 957         String invoice_description;
 958         char[] string_bytes = new char[16];
 959         try {
 960             new FileReader("/dev/urandom").read(string_bytes);
 961         } catch (Exception e) { assert false; }
 962         invoice_description = new String(string_bytes);
 963
 964         Result_Bolt11InvoiceSignOrCreationErrorZ invoice = UtilMethods.create_invoice_from_channelmanager(peer2.chan_manager, peer2.node_signer, peer2.logger, Currency.LDKCurrency_Bitcoin, Option_u64Z.some(10000000), invoice_description, 7200, Option_u16Z.none());
 965         assert invoice instanceof Result_Bolt11InvoiceSignOrCreationErrorZ.Result_Bolt11InvoiceSignOrCreationErrorZ_OK;
 966         System.out.println("Got invoice: " + ((Result_Bolt11InvoiceSignOrCreationErrorZ.Result_Bolt11InvoiceSignOrCreationErrorZ_OK) invoice).res.to_str());
 967
 968         String fuck = ((Result_Bolt11InvoiceSignOrCreationErrorZ.Result_Bolt11InvoiceSignOrCreationErrorZ_OK) invoice).res.to_str();
 969         Result_Bolt11InvoiceParseOrSemanticErrorZ parsed_invoice = Bolt11Invoice.from_str(fuck);
 970 if (parsed_invoice instanceof Result_Bolt11InvoiceParseOrSemanticErrorZ.Result_Bolt11InvoiceParseOrSemanticErrorZ_Err) {
 971     System.err.println(((Result_Bolt11InvoiceParseOrSemanticErrorZ.Result_Bolt11InvoiceParseOrSemanticErrorZ_Err) parsed_invoice).err.to_str());
 972 }
 973         assert parsed_invoice instanceof Result_Bolt11InvoiceParseOrSemanticErrorZ.Result_Bolt11InvoiceParseOrSemanticErrorZ_OK;
 974         assert ((Result_Bolt11InvoiceParseOrSemanticErrorZ.Result_Bolt11InvoiceParseOrSemanticErrorZ_OK) parsed_invoice).res.fallback_addresses().length == 0;
 975         assert Arrays.equals(((Result_Bolt11InvoiceParseOrSemanticErrorZ.Result_Bolt11InvoiceParseOrSemanticErrorZ_OK) parsed_invoice).res.payment_hash(), ((Result_Bolt11InvoiceSignOrCreationErrorZ.Result_Bolt11InvoiceSignOrCreationErrorZ_OK) invoice).res.payment_hash());
 976         SignedRawBolt11Invoice signed_raw = ((Result_Bolt11InvoiceParseOrSemanticErrorZ.Result_Bolt11InvoiceParseOrSemanticErrorZ_OK) parsed_invoice).res.into_signed_raw();
 977         RawBolt11Invoice raw_invoice = signed_raw.raw_invoice();
 978         byte[] desc_hash = raw_invoice.signable_hash();
 979         Description raw_invoice_description = raw_invoice.description();
 980         String description_string = raw_invoice_description.into_inner().get_a();
 981         boolean has_null = false;
 982         for (byte db : invoice_description.getBytes())
 983             if (db == 0)
 984                 has_null = true;
 985         if (!has_null) // Null codepoints are dropped, so may fail
 986             assert description_string.equals(invoice_description);
 987
 988         // Do a trivial test of constructing a phantom invoice
 989         Result_Bolt11InvoiceSignOrCreationErrorZ phantom_invoice = UtilMethods.create_phantom_invoice(
 990                 Option_u64Z.some(42000),
 991                 Option_ThirtyTwoBytesZ.none(),
 992                 "Phantom Invoice", 7200,
 993                 new PhantomRouteHints[]{ peer2.chan_manager.get_phantom_route_hints() },
 994                 peer2.entropy_source,
 995                 PhantomKeysManager.of(peer2.key_seed, 42, 42, new byte[32]).as_NodeSigner(),
 996                 peer2.logger, Currency.LDKCurrency_Bitcoin, Option_u16Z.none(),
 997                 System.currentTimeMillis() / 1000);
 998         assert phantom_invoice.is_ok();
 999         RouteHint[] hints = ((Result_Bolt11InvoiceSignOrCreationErrorZ.Result_Bolt11InvoiceSignOrCreationErrorZ_OK)phantom_invoice).res.route_hints();
1000         assert hints.length == 1;
1001         RouteHintHop[] val = hints[0].get_a();
1002         assert hints[0].get_a().length == 1; // Our one channel is public so we should just have a single-hop hint
1003
1004         if (!use_invoice_payer) {
1005             byte[] payment_hash = ((Result_Bolt11InvoiceSignOrCreationErrorZ.Result_Bolt11InvoiceSignOrCreationErrorZ_OK) invoice).res.payment_hash();
1006             byte[] payment_secret = ((Result_Bolt11InvoiceSignOrCreationErrorZ.Result_Bolt11InvoiceSignOrCreationErrorZ_OK) invoice).res.payment_secret();
1007             byte[] dest_node_id = ((Result_Bolt11InvoiceSignOrCreationErrorZ.Result_Bolt11InvoiceSignOrCreationErrorZ_OK) invoice).res.recover_payee_pub_key();
1008             assert Arrays.equals(dest_node_id, peer2.node_id);
1009             Bolt11InvoiceFeatures invoice_features = ((Result_Bolt11InvoiceSignOrCreationErrorZ.Result_Bolt11InvoiceSignOrCreationErrorZ_OK) invoice).res.features();
1010             RouteHint[] route_hints = ((Result_Bolt11InvoiceSignOrCreationErrorZ.Result_Bolt11InvoiceSignOrCreationErrorZ_OK) invoice).res.route_hints();
1011
1012             Payee payee = Payee.clear(peer2.node_id, route_hints, invoice_features, 42);
1013             PaymentParameters pay_params = PaymentParameters.of(payee, Option_u64Z.none(), 6*24*14, (byte)1, (byte)2, new long[0], new long[0]);
1014             RouteParameters route_params = RouteParameters.from_payment_params_and_value(pay_params, 10000000);
1015             Result_RouteLightningErrorZ route_res = UtilMethods.find_route(
1016                     peer1.chan_manager.get_our_node_id(), route_params, peer1.net_graph,
1017                     peer1_chans, peer1.logger,
1018                     ProbabilisticScorer.of(ProbabilisticScoringDecayParameters.with_default(), peer1.net_graph, peer1.logger).as_ScoreLookUp(),
1019                     ProbabilisticScoringFeeParameters.with_default(), new byte[32]);
1020             assert route_res instanceof Result_RouteLightningErrorZ.Result_RouteLightningErrorZ_OK;
1021             Route route = ((Result_RouteLightningErrorZ.Result_RouteLightningErrorZ_OK) route_res).res;
1022             assert route.get_paths().length == 1;
1023             assert route.get_paths()[0].get_hops().length == 1;
1024             assert route.get_paths()[0].final_value_msat() == 10000000;
1025
1026             byte[] payment_id = new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 };
1027             Result_NonePaymentSendFailureZ payment_res = peer1.chan_manager.send_payment_with_route(route, payment_hash, RecipientOnionFields.secret_only(payment_secret), payment_id);
1028             assert payment_res instanceof Result_NonePaymentSendFailureZ.Result_NonePaymentSendFailureZ_OK;
1029
1030             RouteHop[] hops = new RouteHop[1];
1031             byte[] hop_pubkey = new byte[33];
1032             hop_pubkey[0] = 3;
1033             hop_pubkey[1] = 42;
1034             NodeFeatures node_features = NodeFeatures.empty();
1035             ChannelFeatures channel_features = ChannelFeatures.empty();
1036             hops[0] = RouteHop.of(hop_pubkey, node_features, 42, channel_features, 100, 0, false);
1037             Path[] paths = new Path[1];
1038             paths[0] = Path.of(hops, null);
1039             Route r2 = Route.of(paths, RouteParameters.from_payment_params_and_value(pay_params, 100));
1040             payment_res = peer1.chan_manager.send_payment_with_route(r2, payment_hash, RecipientOnionFields.secret_only(payment_secret), payment_id);
1041             assert payment_res instanceof Result_NonePaymentSendFailureZ.Result_NonePaymentSendFailureZ_Err;
1042         } else {
1043             Result_C3Tuple_ThirtyTwoBytesRecipientOnionFieldsRouteParametersZNoneZ pay_params_res =
1044                 UtilMethods.payment_parameters_from_invoice(((Result_Bolt11InvoiceParseOrSemanticErrorZ.Result_Bolt11InvoiceParseOrSemanticErrorZ_OK) parsed_invoice).res);
1045             assert pay_params_res.is_ok();
1046             Result_C3Tuple_ThirtyTwoBytesRecipientOnionFieldsRouteParametersZNoneZ.Result_C3Tuple_ThirtyTwoBytesRecipientOnionFieldsRouteParametersZNoneZ_OK pay_params =
1047                 (Result_C3Tuple_ThirtyTwoBytesRecipientOnionFieldsRouteParametersZNoneZ.Result_C3Tuple_ThirtyTwoBytesRecipientOnionFieldsRouteParametersZNoneZ_OK)pay_params_res;
1048             Result_NoneRetryableSendFailureZ pay_res = peer1.chan_manager.send_payment(pay_params.res.get_a(), pay_params.res.get_b(), new byte[32], pay_params.res.get_c(), Retry.attempts(0));
1049             assert pay_res.is_ok();
1050         }
1051
1052         if (reload_peers) {
1053             assert peer1.network_graph_persists == 0;
1054             assert peer2.network_graph_persists == 0;
1055             if (use_chan_manager_constructor) {
1056                 peer1.constructor.interrupt();
1057                 peer2.constructor.interrupt();
1058                 if (!use_ignore_handler) {
1059                     assert peer1.network_graph_persists >= 1;
1060                     assert peer2.network_graph_persists >= 1;
1061                 } else {
1062                     assert peer1.network_graph_persists == 0;
1063                     assert peer2.network_graph_persists == 0;
1064                 }
1065             } else if (use_nio_peer_handler) {
1066                 peer1.nio_peer_handler.interrupt();
1067                 peer2.nio_peer_handler.interrupt();
1068             }
1069             WeakReference<Peer> op1 = new WeakReference<Peer>(peer1);
1070             peer1 = new Peer(peer1);
1071             peer2 = new Peer(peer2);
1072             return new TestState(op1, peer1, peer2, b.getHash());
1073         }
1074         return new TestState(null, peer1, peer2, b.getHash());
1075     }
1076
1077     boolean cross_reload_ref_pollution = false;
1078     class TestState {
1079         private final WeakReference<Peer> ref_block;
1080         private final Peer peer1;
1081         private final Peer peer2;
1082         public Sha256Hash best_blockhash;
1083
1084         public TestState(WeakReference<Peer> ref_block, Peer peer1, Peer peer2, Sha256Hash best_blockhash) {
1085             this.ref_block = ref_block;
1086             this.peer1 = peer1;
1087             this.peer2 = peer2;
1088             this.best_blockhash = best_blockhash;
1089         }
1090     }
1091     void do_test_message_handler_b(TestState state) throws Exception {
1092         GcCheck obj = new GcCheck();
1093         if (state.ref_block != null) {
1094             // Ensure the original peers get freed before we move on. Note that we have to be in a different function
1095             // scope to do so as the (at least current OpenJDK) JRE won't release anything created in the same scope.
1096             while (!cross_reload_ref_pollution && state.ref_block.get() != null) {
1097                 System.gc();
1098                 System.runFinalization();
1099             }
1100             connect_peers(state.peer1, state.peer2);
1101         }
1102
1103         Event[] events = state.peer2.get_manager_events(1, state.peer1, state.peer2);
1104         assert events[0] instanceof Event.PendingHTLCsForwardable;
1105         state.peer2.chan_manager.process_pending_htlc_forwards();
1106
1107         events = state.peer2.get_manager_events(1, state.peer1, state.peer2);
1108         assert events[0] instanceof Event.PaymentClaimable;
1109         assert ((Event.PaymentClaimable)events[0]).purpose instanceof PaymentPurpose.Bolt11InvoicePayment;
1110         assert ((PaymentPurpose.Bolt11InvoicePayment) ((Event.PaymentClaimable)events[0]).purpose).payment_preimage instanceof Option_ThirtyTwoBytesZ.Some;
1111         byte[] payment_preimage = ((Option_ThirtyTwoBytesZ.Some) ((PaymentPurpose.Bolt11InvoicePayment)((Event.PaymentClaimable)events[0]).purpose).payment_preimage).some;
1112         assert !Arrays.equals(payment_preimage, new byte[32]);
1113         state.peer2.chan_manager.claim_funds(payment_preimage);
1114
1115         events = state.peer2.get_manager_events(1, state.peer1, state.peer2);
1116         assert events[0] instanceof Event.PaymentClaimed;
1117         assert ((Event.PaymentClaimed)events[0]).purpose instanceof PaymentPurpose.Bolt11InvoicePayment;
1118         assert ((PaymentPurpose.Bolt11InvoicePayment) ((Event.PaymentClaimed)events[0]).purpose).payment_preimage instanceof  Option_ThirtyTwoBytesZ.Some;
1119         payment_preimage = ((Option_ThirtyTwoBytesZ.Some)((PaymentPurpose.Bolt11InvoicePayment)((Event.PaymentClaimed)events[0]).purpose).payment_preimage).some;
1120         assert !Arrays.equals(payment_preimage, new byte[32]);
1121
1122         events = state.peer1.get_manager_events(2, state.peer1, state.peer2);
1123         assert events[0] instanceof Event.PaymentSent;
1124         assert Arrays.equals(((Event.PaymentSent) events[0]).payment_preimage, payment_preimage);
1125         assert events[1] instanceof Event.PaymentPathSuccessful;
1126         assert ((Event.PaymentPathSuccessful) events[1]).payment_hash instanceof Option_ThirtyTwoBytesZ.Some;
1127         assert Arrays.equals(((Option_ThirtyTwoBytesZ.Some) ((Event.PaymentPathSuccessful) events[1]).payment_hash).some, ((Event.PaymentSent) events[0]).payment_hash);
1128
1129         if (use_nio_peer_handler) {
1130             // We receive PaymentSent immediately upon receipt of the payment preimage, but we expect to not have an
1131             // HTLC transaction to broadcast below, which requires a bit more time to fully complete the
1132             // commitment-transaction-update dance between both peers.
1133             Thread.sleep(100);
1134         }
1135
1136         if (state.peer1.chain_monitor != null) {
1137             Balance[] peer1_balances = state.peer1.chain_monitor.get_claimable_balances(state.peer1.chan_manager.list_channels());
1138             assert peer1_balances.length == 0;
1139             Balance[] peer2_balances = state.peer2.chain_monitor.get_claimable_balances(state.peer2.chan_manager.list_channels());
1140             assert peer2_balances.length == 0;
1141         }
1142
1143         ChannelDetails[] peer1_chans = state.peer1.chan_manager.list_channels();
1144
1145         if (nice_close) {
1146             Result_NoneAPIErrorZ close_res = state.peer1.chan_manager.close_channel(peer1_chans[0].get_channel_id(), state.peer2.node_id);
1147             assert close_res instanceof Result_NoneAPIErrorZ.Result_NoneAPIErrorZ_OK;
1148             maybe_exchange_peer_messages(state.peer1, state.peer2);
1149             synchronized (state.peer1.broadcast_set) {
1150                 while (state.peer1.broadcast_set.size() != 1) state.peer1.broadcast_set.wait();
1151             }
1152             synchronized (state.peer2.broadcast_set) {
1153                 while (state.peer2.broadcast_set.size() != 1) state.peer2.broadcast_set.wait();
1154             }
1155         } else {
1156             state.peer1.chan_manager.force_close_all_channels_broadcasting_latest_txn();
1157             maybe_exchange_peer_messages(state.peer1, state.peer2);
1158             synchronized (state.peer1.broadcast_set) {
1159                 while (state.peer1.broadcast_set.size() != 1) state.peer1.broadcast_set.wait();
1160             }
1161             synchronized (state.peer2.broadcast_set) {
1162                 while (state.peer2.broadcast_set.size() != 1) state.peer2.broadcast_set.wait();
1163             }
1164         }
1165
1166         assert state.peer1.broadcast_set.size() == 1;
1167         assert state.peer2.broadcast_set.size() == 1;
1168
1169         events = state.peer2.get_manager_events(1, state.peer1, state.peer2);
1170         assert events[0] instanceof Event.ChannelClosed;
1171         events = state.peer1.get_manager_events(1, state.peer1, state.peer2);
1172         assert events[0] instanceof Event.ChannelClosed;
1173
1174         if (state.peer1.chain_monitor != null) {
1175             Balance[] peer1_balances = state.peer1.chain_monitor.get_claimable_balances(state.peer1.chan_manager.list_channels());
1176             assert peer1_balances.length == 1;
1177             for (Balance bal : peer1_balances) {
1178                 assert bal instanceof Balance.ClaimableOnChannelClose;
1179                 long expected_tx_fee = 183;
1180                 assert ((Balance.ClaimableOnChannelClose) bal).amount_satoshis == 100000 - 1 - 10000 - expected_tx_fee;
1181             }
1182             Balance[] peer2_balances = state.peer2.chain_monitor.get_claimable_balances(state.peer2.chan_manager.list_channels());
1183             assert peer2_balances.length == 1;
1184             for (Balance bal : peer2_balances) {
1185                 assert bal instanceof Balance.ClaimableOnChannelClose;
1186                 assert ((Balance.ClaimableOnChannelClose) bal).amount_satoshis == 10000 + 1;
1187             }
1188         }
1189
1190         if (!nice_close) {
1191             BitcoinNetworkParams bitcoinj_net = BitcoinNetworkParams.of(BitcoinNetwork.MAINNET);
1192             Transaction tx = new Transaction(bitcoinj_net, state.peer1.broadcast_set.getFirst());
1193             Block b = new Block(bitcoinj_net, 2, state.best_blockhash, Sha256Hash.ZERO_HASH, 42, 0, 0,
1194                     Arrays.asList(new Transaction[]{tx}));
1195             TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[] watch_outputs = state.peer2.connect_block(b, 10, 1);
1196             if (watch_outputs != null) { // We only process watch_outputs manually when we use a manually-build Watch impl
1197                 assert watch_outputs.length == 1;
1198                 assert Arrays.equals(watch_outputs[0].get_a(), tx.getTxId().getReversedBytes());
1199                 assert watch_outputs[0].get_b().length == 2;
1200                 assert watch_outputs[0].get_b()[0].get_a() == 0;
1201                 assert watch_outputs[0].get_b()[1].get_a() == 1;
1202             }
1203
1204             for (int i = 11; i < 21; i++) {
1205                 b = new Block(bitcoinj_net, 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, new ArrayList<>());
1206                 state.peer2.connect_block(b, i, 0);
1207             }
1208
1209             Event[] broadcastable_event = state.peer2.get_monitor_events(1);
1210             assert broadcastable_event.length == 1;
1211             assert broadcastable_event[0] instanceof Event.SpendableOutputs;
1212             if (state.peer2.explicit_keys_manager != null) {
1213                 TxOut[] additional_outputs = new TxOut[]{new TxOut(420, new byte[]{0x42})};
1214                 Result_TransactionNoneZ tx_res = state.peer2.explicit_keys_manager.as_OutputSpender().spend_spendable_outputs(((Event.SpendableOutputs) broadcastable_event[0]).outputs, additional_outputs, new byte[]{0x00}, 253, Option_u32Z.none());
1215                 assert tx_res instanceof Result_TransactionNoneZ.Result_TransactionNoneZ_OK;
1216                 Transaction built_tx = new Transaction(bitcoinj_net, ((Result_TransactionNoneZ.Result_TransactionNoneZ_OK) tx_res).res);
1217                 assert built_tx.getOutputs().size() == 2;
1218                 assert Arrays.equals(built_tx.getOutput(1).getScriptBytes(), new byte[]{0x00});
1219                 assert Arrays.equals(built_tx.getOutput(0).getScriptBytes(), new byte[]{0x42});
1220                 assert built_tx.getOutput(0).getValue().value == 420;
1221             }
1222
1223             while (state.peer1.peer_manager.list_peers().length != 0 || state.peer2.peer_manager.list_peers().length != 0) {
1224                 // LDK disconnects peers before sending an error message, so wait for disconnection.
1225                 Thread.sleep(10);
1226             }
1227
1228             connect_peers(state.peer1, state.peer2);
1229         }
1230
1231         // Test exchanging a custom message (note that ChannelManagerConstructor) always loads an IgnorimgMessageHandler
1232         // so we cannot exchange custom messages with it
1233         if (!use_chan_manager_constructor) {
1234             byte[] custom_message_bytes = new byte[]{0x42, 0x44, 0x43, 0x00};
1235             synchronized(state.peer1.custom_messages_to_send) {
1236                 state.peer1.custom_messages_to_send.add(custom_message_bytes);
1237             }
1238             state.peer1.peer_manager.process_events();
1239             synchronized (state.peer2.received_custom_messages) {
1240                 while (true) {
1241                     if (state.peer2.received_custom_messages.isEmpty()) {
1242                         state.peer2.received_custom_messages.wait();
1243                         continue;
1244                     }
1245                     assert state.peer2.received_custom_messages.size() == 1;
1246                     assert Arrays.equals(state.peer2.received_custom_messages.get(0), custom_message_bytes);
1247                     break;
1248                 }
1249             }
1250         }
1251
1252         if (use_nio_peer_handler) {
1253             state.peer1.peer_manager.disconnect_by_node_id(state.peer2.chan_manager.get_our_node_id());
1254             while (state.peer1.peer_manager.list_peers().length != 0) Thread.yield();
1255             while (state.peer2.peer_manager.list_peers().length != 0) Thread.yield();
1256             state.peer1.nio_peer_handler.interrupt();
1257             state.peer2.nio_peer_handler.interrupt();
1258         }
1259
1260         state.peer1.get_monitor_events(0);
1261         state.peer2.get_monitor_events(0);
1262
1263         if (use_chan_manager_constructor) {
1264             assert state.peer1.network_graph_persists == 0;
1265             assert state.peer2.network_graph_persists == 0;
1266             state.peer1.constructor.interrupt();
1267             state.peer2.constructor.interrupt();
1268             if (!use_ignore_handler) {
1269                 assert state.peer1.network_graph_persists >= 1;
1270                 assert state.peer2.network_graph_persists >= 1;
1271             } else {
1272                 assert state.peer1.network_graph_persists == 0;
1273                 assert state.peer2.network_graph_persists == 0;
1274             }
1275         }
1276
1277         t.interrupt();
1278
1279         if (state.peer1.net_graph != null)
1280             state.peer1.net_graph.write();
1281
1282         // Construct the only Option_Enum::Variant(OpaqueStruct) we have in the codebase as this used to cause double-frees:
1283         byte[] serd = new byte[] {(byte)0xd9,(byte)0x77,(byte)0xcb,(byte)0x9b,(byte)0x53,(byte)0xd9,(byte)0x3a,(byte)0x6f,(byte)0xf6,(byte)0x4b,(byte)0xb5,(byte)0xf1,(byte)0xe1,(byte)0x58,(byte)0xb4,(byte)0x09,(byte)0x4b,(byte)0x66,(byte)0xe7,(byte)0x98,(byte)0xfb,(byte)0x12,(byte)0x91,(byte)0x11,(byte)0x68,(byte)0xa3,(byte)0xcc,(byte)0xdf,(byte)0x80,(byte)0xa8,(byte)0x30,(byte)0x96,(byte)0x34,(byte)0x0a,(byte)0x6a,(byte)0x95,(byte)0xda,(byte)0x0a,(byte)0xe8,(byte)0xd9,(byte)0xf7,(byte)0x76,(byte)0x52,(byte)0x8e,(byte)0xec,(byte)0xdb,(byte)0xb7,(byte)0x47,(byte)0xeb,(byte)0x6b,(byte)0x54,(byte)0x54,(byte)0x95,(byte)0xa4,(byte)0x31,(byte)0x9e,(byte)0xd5,(byte)0x37,(byte)0x8e,(byte)0x35,(byte)0xb2,(byte)0x1e,(byte)0x07,(byte)0x3a,(byte)0x00,(byte)0x00,(byte)0x00,(byte)0x00,(byte)0x01,(byte)0x19,(byte)0xd6,(byte)0x68,(byte)0x9c,(byte)0x08,(byte)0x5a,(byte)0xe1,(byte)0x65,(byte)0x83,(byte)0x1e,(byte)0x93,(byte)0x4f,(byte)0xf7,(byte)0x63,(byte)0xae,(byte)0x46,(byte)0xa2,(byte)0xa6,(byte)0xc1,(byte)0x72,(byte)0xb3,(byte)0xf1,(byte)0xb6,(byte)0x0a,(byte)0x8c,(byte)0xe2,(byte)0x6f,(byte)0x00,(byte)0x08,(byte)0x3a,(byte)0x84,(byte)0x00,(byte)0x00,(byte)0x03,(byte)0x4d,(byte)0x01,(byte)0x34,(byte)0x13,(byte)0xa7,(byte)0x00,(byte)0x00,(byte)0x00,(byte)0x90,(byte)0x00,(byte)0x00,(byte)0x00,(byte)0x00,(byte)0x00,(byte)0x0f,(byte)0x42,(byte)0x40,(byte)0x00,(byte)0x00,(byte)0x27,(byte)0x10,(byte)0x00,(byte)0x00,(byte)0x00,(byte)0x14,(byte)0xde,(byte)0xad,(byte)0xbe,(byte)0xef,(byte)0x42,(byte)0x42,(byte)0x42,(byte)0x42};
1284         Result_ChannelUpdateDecodeErrorZ upd_msg = ChannelUpdate.read(serd);
1285         assert upd_msg instanceof Result_ChannelUpdateDecodeErrorZ.Result_ChannelUpdateDecodeErrorZ_OK;
1286         assert ((Result_ChannelUpdateDecodeErrorZ.Result_ChannelUpdateDecodeErrorZ_OK) upd_msg).res.get_contents().get_htlc_maximum_msat() == 0xdeadbeef42424242L;
1287         Option_NetworkUpdateZ upd = Option_NetworkUpdateZ.some(NetworkUpdate.channel_update_message(((Result_ChannelUpdateDecodeErrorZ.Result_ChannelUpdateDecodeErrorZ_OK) upd_msg).res));
1288
1289         if (use_chan_manager_constructor) {
1290             // Lock the scorer twice back-to-back to check that the try-with-resources AutoCloseable on the scorer works.
1291             try (ChannelManagerConstructor.ScorerWrapper score = state.peer1.constructor.get_locked_scorer()) {
1292                 score.prob_scorer.debug_log_liquidity_stats();
1293             }
1294         }
1295     }
1296
1297     java.util.LinkedList<WeakReference<Object>> must_free_objs = new java.util.LinkedList();
1298     int gc_count = 0;
1299     int gc_exp_count = 0;
1300     class GcCheck {
1301         GcCheck() { gc_exp_count += 1; }
1302         @Override
1303         protected void finalize() throws Throwable {
1304             gc_count += 1;
1305             super.finalize();
1306         }
1307     }
1308 }
1309 public class HumanObjectPeerTest {
1310     static HumanObjectPeerTestInstance do_test_run(boolean nice_close, boolean use_km_wrapper, boolean use_full_km_wrapper, boolean use_manual_watch, boolean reload_peers, boolean break_cross_peer_refs, boolean nio_peer_handler, boolean use_ignoring_routing_handler, boolean use_chan_manager_constructor, boolean use_invoice_payer) throws Exception {
1311         HumanObjectPeerTestInstance instance = new HumanObjectPeerTestInstance(nice_close, use_km_wrapper, use_full_km_wrapper, use_manual_watch, reload_peers, break_cross_peer_refs, nio_peer_handler, !nio_peer_handler, use_ignoring_routing_handler, use_chan_manager_constructor, use_invoice_payer);
1312         HumanObjectPeerTestInstance.TestState state = instance.do_test_message_handler();
1313         instance.do_test_message_handler_b(state);
1314         return instance;
1315     }
1316     static void do_test(boolean nice_close, boolean use_km_wrapper, boolean use_full_km_wrapper, boolean use_manual_watch, boolean reload_peers, boolean break_cross_peer_refs, boolean nio_peer_handler, boolean use_ignoring_routing_handler, boolean use_chan_manager_constructor, boolean use_invoice_payer) throws Exception {
1317         HumanObjectPeerTestInstance instance = do_test_run(nice_close, use_km_wrapper, use_full_km_wrapper, use_manual_watch, reload_peers, break_cross_peer_refs, nio_peer_handler, use_ignoring_routing_handler, use_chan_manager_constructor, use_invoice_payer);
1318         while (instance.gc_count != instance.gc_exp_count) {
1319             System.gc();
1320             System.runFinalization();
1321         }
1322         for (WeakReference<Object> o : instance.must_free_objs)
1323             assert o.get() == null;
1324     }
1325     public static final int TEST_ITERATIONS = (1 << 10);
1326     public static void do_test_message_handler(IntConsumer statusFunction) throws Exception {
1327         Thread gc_thread = new Thread(() -> {
1328             while (true) {
1329                 System.gc();
1330                 System.runFinalization();
1331                 try { Thread.sleep(0, 1); } catch (InterruptedException e) { break; }
1332             }
1333         }, "Test GC Thread");
1334         gc_thread.start();
1335         for (int i = 0; i < TEST_ITERATIONS; i++) {
1336             boolean nice_close =                   (i & (1 << 0)) != 0;
1337             boolean use_km_wrapper =               (i & (1 << 1)) != 0;
1338             boolean use_full_km_wrapper =          (i & (1 << 2)) != 0;
1339             boolean use_manual_watch =             (i & (1 << 3)) != 0;
1340             boolean reload_peers =                 (i & (1 << 4)) != 0;
1341             boolean break_cross_refs =             (i & (1 << 5)) != 0;
1342             boolean use_ignoring_routing_handler = (i & (1 << 6)) != 0;
1343             boolean use_chan_manager_constructor = (i & (1 << 7)) != 0;
1344             boolean use_invoice_payer =            (i & (1 << 8)) != 0;
1345             boolean nio_peer_handler =             (i & (1 << 9)) != 0;
1346             if (break_cross_refs && !reload_peers) {
1347                 // There are no cross refs to break without reloading peers.
1348                 continue;
1349             }
1350             if (use_chan_manager_constructor && (use_manual_watch || !nio_peer_handler)) {
1351                 // ChannelManagerConstructor requires a ChainMonitor as the Watch and creates a NioPeerHandler for us.
1352                 continue;
1353             }
1354             if (!use_chan_manager_constructor && (use_ignoring_routing_handler)) {
1355                 // We rely on the ChannelManagerConstructor to convert null into an IgnoringMessageHandler, so don't
1356                 // try to run with an IgnoringMessageHandler unless we're also using a ChannelManagerConstructor.
1357                 continue;
1358             }
1359             if (use_chan_manager_constructor && use_ignoring_routing_handler && use_invoice_payer) {
1360                 // As documented on ChannelManagerConstructor, if we provide a `null` NetworkGraph (because we want to
1361                 // use an IgnoringMessageHandler), no InvoicePayer will be constructed for us, thus we cannot use an
1362                 // InvoicePayer to send payments in this case.
1363                 continue;
1364             }
1365             if (use_chan_manager_constructor && use_km_wrapper) {
1366                 // ChannelManagerConstructor requires a full KeysManager, so using wrapped keys interfaces doesn't make
1367                 // any sense.
1368                 continue;
1369             }
1370             if (use_full_km_wrapper && !use_km_wrapper) {
1371                 // Gotta use some KM wrapper if we're gonna use a full one.
1372                 continue;
1373             }
1374             statusFunction.accept(i);
1375             do_test(nice_close, use_km_wrapper, use_full_km_wrapper, use_manual_watch, reload_peers, break_cross_refs, nio_peer_handler, use_ignoring_routing_handler, use_chan_manager_constructor, use_invoice_payer);
1376         }
1377         gc_thread.interrupt();
1378         gc_thread.join();
1379     }
1380     @Test
1381     public void test_message_handler() throws Exception {
1382         do_test_message_handler(i -> System.err.println("Running test with flags " + i));
1383     }
1384
1385     // This is used in the test jar to test the built jar is runnable
1386     public static void main(String[] args) {
1387         try {
1388             do_test_message_handler(i -> System.err.println("Running test with flags " + i));
1389         } catch (Exception e) {
1390             System.err.println("Caught exception:");
1391             System.err.println(e);
1392             System.exit(1);
1393         }
1394     }
1395 }