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

   1 package org.ldk;
   2
   3 import org.bitcoinj.core.*;
   4 import org.bitcoinj.script.Script;
   5 import org.junit.jupiter.api.Test;
   6 import org.ldk.enums.Network;
   7 import org.ldk.enums.Recipient;
   8 import org.ldk.impl.bindings;
   9
  10 import java.lang.ref.Reference;
  11 import java.util.ArrayList;
  12 import java.util.Arrays;
  13 import java.util.HashMap;
  14 import java.util.LinkedList;
  15 import java.util.concurrent.ConcurrentHashMap;
  16 import java.util.concurrent.ConcurrentLinkedQueue;
  17
  18 public class PeerTest {
  19     class Peer {
  20         final long logger;
  21         final long fee_estimator;
  22         final long tx_broadcaster;
  23         final long chain_monitor;
  24         final long keys;
  25         final long keys_interface;
  26         final long config;
  27         final long chan_manager;
  28         final long chan_manager_events;
  29         final long chan_handler;
  30         final long router;
  31         final long router_wrapper;
  32         final long route_handler;
  33         final long message_handler;
  34         final long ignoring_message_handler;
  35         final long custom_message_handler;
  36         final long onion_message_handler;
  37         final long peer_manager;
  38         HashMap<String, Long> monitors; // Wow I forgot just how terrible Java is - we can't put a byte array here.
  39         byte[] node_id;
  40         bindings.LDKFeeEstimator fee_est;
  41         bindings.LDKBroadcasterInterface broad_trait;
  42         bindings.LDKLogger log_trait;
  43         bindings.LDKWatch watcher;
  44
  45         Peer(byte seed) {
  46             this.log_trait = (long arg) -> {
  47                 System.out.println(seed + ": " + bindings.Record_get_args(arg));
  48                 bindings.Record_free(arg);
  49             };
  50             logger = bindings.LDKLogger_new(this.log_trait);
  51             this.fee_est = confirmation_target -> 0;
  52             this.fee_estimator = bindings.LDKFeeEstimator_new(this.fee_est);
  53             this.broad_trait = tx -> {
  54                 // We should broadcast
  55             };
  56             this.tx_broadcaster = bindings.LDKBroadcasterInterface_new(this.broad_trait);
  57             this.monitors = new HashMap<>();
  58             this.watcher = new bindings.LDKWatch() {
  59                 @Override
  60                 public long watch_channel(long funding_txo, long monitor) {
  61                     synchronized (monitors) {
  62                         assert monitors.put(Arrays.toString(bindings.OutPoint_get_txid(funding_txo)), monitor) == null;
  63                     }
  64                     bindings.OutPoint_free(funding_txo);
  65                     return bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
  66                 }
  67
  68                 @Override
  69                 public long update_channel(long funding_txo, long update) {
  70                     synchronized (monitors) {
  71                         String txid = Arrays.toString(bindings.OutPoint_get_txid(funding_txo));
  72                         assert monitors.containsKey(txid);
  73                         long update_res = bindings.ChannelMonitor_update_monitor(monitors.get(txid), update, tx_broadcaster, fee_estimator, logger);
  74                         assert bindings.CResult_NoneNoneZ_is_ok(update_res);
  75                         bindings.CResult_NoneNoneZ_free(update_res);
  76                     }
  77                     bindings.OutPoint_free(funding_txo);
  78                     bindings.ChannelMonitorUpdate_free(update);
  79                     return bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
  80                 }
  81
  82                 @Override
  83                 public long[] release_pending_monitor_events() {
  84                     synchronized (monitors) {
  85                         assert monitors.size() <= 1;
  86                         for (Long mon : monitors.values()) {
  87                             long funding_info = bindings.ChannelMonitor_get_funding_txo(mon);
  88                             long funding_txo = bindings.C2Tuple_OutPointScriptZ_get_a(funding_info);
  89                             long[] mon_events = bindings.ChannelMonitor_get_and_clear_pending_monitor_events(mon);
  90                             byte[] counterparty_pk = bindings.ChannelMonitor_get_counterparty_node_id(mon);
  91                             long funding_mon_tuple = bindings.C3Tuple_OutPointCVec_MonitorEventZPublicKeyZ_new(funding_txo, mon_events, counterparty_pk);
  92                             bindings.C2Tuple_OutPointScriptZ_free(funding_info);
  93                             return new long[] {funding_mon_tuple};
  94                         }
  95                     }
  96                     return new long[0];
  97                 }
  98             };
  99             this.chain_monitor = bindings.LDKWatch_new(this.watcher);
 100
 101             byte[] key_seed = new byte[32];
 102             for (byte i = 0; i < 32; i++) { key_seed[i] = (byte) (i ^ seed); }
 103             this.keys = bindings.KeysManager_new(key_seed, System.currentTimeMillis() / 1000, (int)(System.currentTimeMillis() * 1000) & 0xffffffff);
 104             this.keys_interface = bindings.KeysManager_as_KeysInterface(keys);
 105             this.config = bindings.UserConfig_default();
 106             long params = bindings.ChainParameters_new(Network.LDKNetwork_Bitcoin, bindings.BestBlock_new(new byte[32], 0));
 107             this.chan_manager = bindings.ChannelManager_new(fee_estimator, chain_monitor, tx_broadcaster, logger, keys_interface, config, params);
 108             this.node_id = bindings.ChannelManager_get_our_node_id(chan_manager);
 109             this.chan_manager_events = bindings.ChannelManager_as_EventsProvider(chan_manager);
 110
 111             this.chan_handler = bindings.ChannelManager_as_ChannelMessageHandler(chan_manager);
 112             this.router = bindings.NetworkGraph_new(new byte[32], logger);
 113             this.router_wrapper = bindings.P2PGossipSync_new(router, bindings.COption_AccessZ_none(), logger);
 114             this.route_handler = bindings.P2PGossipSync_as_RoutingMessageHandler(router_wrapper);
 115             this.ignoring_message_handler = bindings.IgnoringMessageHandler_new();
 116             this.custom_message_handler = bindings.IgnoringMessageHandler_as_CustomMessageHandler(this.ignoring_message_handler);
 117             this.onion_message_handler = bindings.IgnoringMessageHandler_as_OnionMessageHandler(this.ignoring_message_handler);
 118             this.message_handler = bindings.MessageHandler_new(chan_handler, route_handler, this.onion_message_handler);
 119
 120             byte[] random_data = new byte[32];
 121             for (byte i = 0; i < 32; i++) { random_data[i] = (byte) ((i ^ seed) ^ 0xf0); }
 122
 123             long node_id_result = bindings.KeysInterface_get_node_secret(keys_interface, Recipient.LDKRecipient_Node);
 124             assert bindings.CResult_SecretKeyNoneZ_is_ok(node_id_result);
 125             this.peer_manager = bindings.PeerManager_new(message_handler, bindings.CResult_SecretKeyNoneZ_get_ok(node_id_result),
 126                     System.currentTimeMillis() / 1000, random_data, logger, this.custom_message_handler);
 127             bindings.CResult_SecretKeyNoneZ_free(node_id_result);
 128         }
 129
 130         void connect_block(Block b, Transaction t, int height) {
 131             long listen = bindings.ChannelManager_as_Listen(chan_manager);
 132             bindings.Listen_block_connected(listen, b.bitcoinSerialize(), height);
 133             bindings.Listen_free(listen);
 134             synchronized (monitors) {
 135                 for (Long mon : monitors.values()) {
 136                     long[] txn;
 137                     if (t != null)
 138                         txn = new long[]{bindings.C2Tuple_usizeTransactionZ_new(1, t.bitcoinSerialize())};
 139                     else
 140                         txn = new long[0];
 141                     byte[] header = Arrays.copyOfRange(b.bitcoinSerialize(), 0, 80);
 142                     long[] ret = bindings.ChannelMonitor_block_connected(mon, header, txn, height, tx_broadcaster, fee_estimator, logger);
 143                     for (long r : ret) {
 144                         bindings.C2Tuple_TxidCVec_C2Tuple_u32TxOutZZZ_free(r);
 145                     }
 146                 }
 147             }
 148         }
 149
 150         void free() {
 151             // Note that we can't rely on finalizer order, so don't bother trying to rely on it here
 152             bindings.Logger_free(logger);
 153             bindings.FeeEstimator_free(fee_estimator);
 154             bindings.BroadcasterInterface_free(tx_broadcaster);
 155             bindings.Watch_free(chain_monitor);
 156             bindings.KeysManager_free(keys);
 157             bindings.KeysInterface_free(keys_interface);
 158             bindings.UserConfig_free(config);
 159             bindings.ChannelManager_free(chan_manager);
 160             bindings.EventsProvider_free(chan_manager_events);
 161             bindings.ChannelMessageHandler_free(chan_handler);
 162             bindings.NetworkGraph_free(router);
 163             bindings.P2PGossipSync_free(router_wrapper);
 164             bindings.RoutingMessageHandler_free(route_handler);
 165             bindings.CustomMessageHandler_free(custom_message_handler);
 166             bindings.OnionMessageHandler_free(onion_message_handler);
 167             //MessageHandler was actually moved into the route_handler!: bindings.MessageHandler_free(message_handler);
 168             bindings.PeerManager_free(peer_manager);
 169             synchronized (monitors) {
 170                 for (Long mon : monitors.values()) {
 171                     bindings.ChannelMonitor_free(mon);
 172                 }
 173             }
 174         }
 175     }
 176
 177     class LongHolder { long val; }
 178     class PendingWrite {
 179         long pm;
 180         long descriptor;
 181         byte[] array;
 182         PendingWrite(long pm, long descriptor, byte[] array) { this.pm = pm; this.descriptor = descriptor; this.array = array; }
 183         void process() {
 184             long res = bindings.PeerManager_read_event(pm, descriptor, array);
 185             assert bindings.CResult_boolPeerHandleErrorZ_is_ok(res);
 186             assert !bindings.CResult_boolPeerHandleErrorZ_get_ok(res);
 187             bindings.CResult_boolPeerHandleErrorZ_free(res);
 188         }
 189     }
 190     ConcurrentLinkedQueue<PendingWrite> pending_writes = new ConcurrentLinkedQueue<>();
 191
 192     void do_read_event(ConcurrentLinkedQueue<Thread> list, long pm, long descriptor, byte[] arr) {
 193         pending_writes.add(new PendingWrite(pm, descriptor, arr));
 194         Thread thread = new Thread(() -> {
 195             synchronized (pending_writes) {
 196                 while (true) {
 197                     PendingWrite write = pending_writes.poll();
 198                     if (write == null) break;
 199                     write.process();
 200                 }
 201             }
 202         });
 203         thread.start();
 204         list.add(thread);
 205     }
 206
 207     void deliver_peer_messages(ConcurrentLinkedQueue<Thread> list, long peer1, long peer2) throws InterruptedException {
 208         bindings.PeerManager_process_events(peer1);
 209         bindings.PeerManager_process_events(peer2);
 210         while (!list.isEmpty()) {
 211             list.poll().join();
 212             bindings.PeerManager_process_events(peer1);
 213             bindings.PeerManager_process_events(peer2);
 214         }
 215     }
 216
 217     @Test
 218     void test_message_handler() throws InterruptedException {
 219         Peer peer1 = new Peer((byte) 1);
 220         Peer peer2 = new Peer((byte) 2);
 221
 222         ConcurrentLinkedQueue<Thread> list = new ConcurrentLinkedQueue<Thread>();
 223         LongHolder descriptor1 = new LongHolder();
 224         LongHolder descriptor1ref = descriptor1;
 225         bindings.LDKSocketDescriptor sock1 = new bindings.LDKSocketDescriptor() {
 226             @Override
 227             public long send_data(byte[] data, boolean resume_read) {
 228                 do_read_event(list, peer1.peer_manager, descriptor1ref.val, data);
 229                 return data.length;
 230             }
 231
 232             @Override public void disconnect_socket() { assert false; }
 233             @Override public boolean eq(long other_arg) { boolean ret = bindings.SocketDescriptor_hash(other_arg) == 2; bindings.SocketDescriptor_free(other_arg); return ret; }
 234             @Override public long hash() { return 2; }
 235         };
 236         long descriptor2 = bindings.LDKSocketDescriptor_new(sock1);
 237
 238         bindings.LDKSocketDescriptor sock2 = new bindings.LDKSocketDescriptor() {
 239             @Override
 240             public long send_data(byte[] data, boolean resume_read) {
 241                 do_read_event(list, peer2.peer_manager, descriptor2, data);
 242                 return data.length;
 243             }
 244
 245             @Override public void disconnect_socket() { assert false; }
 246             @Override public boolean eq(long other_arg) { boolean ret = bindings.SocketDescriptor_hash(other_arg) == 1; bindings.SocketDescriptor_free(other_arg); return ret; }
 247             @Override public long hash() { return 1; }
 248         };
 249         descriptor1.val = bindings.LDKSocketDescriptor_new(sock2);
 250
 251         long no_netaddr = bindings.COption_NetAddressZ_none();
 252         long init_vec = bindings.PeerManager_new_outbound_connection(peer1.peer_manager, peer2.node_id, descriptor1.val, no_netaddr);
 253         assert(bindings.CResult_CVec_u8ZPeerHandleErrorZ_is_ok(init_vec));
 254
 255         long con_res = bindings.PeerManager_new_inbound_connection(peer2.peer_manager, descriptor2, no_netaddr);
 256         assert(bindings.CResult_NonePeerHandleErrorZ_is_ok(con_res));
 257         bindings.CResult_NonePeerHandleErrorZ_free(con_res);
 258         do_read_event(list, peer2.peer_manager, descriptor2, bindings.CResult_CVec_u8ZPeerHandleErrorZ_get_ok(init_vec));
 259         bindings.CResult_CVec_u8ZPeerHandleErrorZ_free(init_vec);
 260         bindings.COption_NetAddressZ_free(no_netaddr);
 261
 262         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 263
 264         long cc_res = bindings.ChannelManager_create_channel(peer1.chan_manager, peer2.node_id, 10000, 1000, 42, 0);
 265         assert bindings.CResult_NoneAPIErrorZ_is_ok(cc_res);
 266         bindings.CResult_NoneAPIErrorZ_free(cc_res);
 267
 268         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 269
 270         ArrayList<Long> events = new ArrayList();
 271         bindings.LDKEventHandler events_adder = events::add;
 272         long handler = bindings.LDKEventHandler_new(events_adder);
 273
 274         bindings.EventsProvider_process_pending_events(peer1.chan_manager_events, handler);
 275         assert events.size() == 1;
 276         bindings.LDKEvent event = bindings.LDKEvent_ref_from_ptr(events.get(0));
 277         assert event instanceof bindings.LDKEvent.FundingGenerationReady;
 278         assert ((bindings.LDKEvent.FundingGenerationReady)event).channel_value_satoshis == 10000;
 279         assert ((bindings.LDKEvent.FundingGenerationReady)event).user_channel_id == 42;
 280         byte[] funding_spk = ((bindings.LDKEvent.FundingGenerationReady)event).output_script;
 281         assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
 282         byte[] chan_id = ((bindings.LDKEvent.FundingGenerationReady)event).temporary_channel_id;
 283         bindings.Event_free(events.remove(0));
 284
 285         Transaction funding = new Transaction(NetworkParameters.fromID(NetworkParameters.ID_MAINNET));
 286         funding.addInput(new TransactionInput(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), funding, new byte[0]));
 287         funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
 288         funding.getInput(0).getWitness().setPush(0, new byte[] {0x1});
 289         funding.addOutput(Coin.SATOSHI.multiply(10000), new Script(funding_spk));
 290         bindings.ChannelManager_funding_transaction_generated(peer1.chan_manager, chan_id, peer2.node_id, funding.bitcoinSerialize());
 291
 292         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 293
 294         Block b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
 295         peer1.connect_block(b, funding, 1);
 296         peer2.connect_block(b, funding, 1);
 297
 298         for (int height = 2; height < 10; height++) {
 299             b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[0]));
 300             peer1.connect_block(b, null, height);
 301             peer2.connect_block(b, null, height);
 302         }
 303
 304         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 305
 306         long[] peer1_chans = bindings.ChannelManager_list_channels(peer1.chan_manager);
 307         long[] peer2_chans = bindings.ChannelManager_list_channels(peer2.chan_manager);
 308         assert peer1_chans.length == 1;
 309         assert peer2_chans.length == 1;
 310         assert bindings.ChannelDetails_get_channel_value_satoshis(peer1_chans[0]) == 10000;
 311         assert bindings.ChannelDetails_get_is_usable(peer1_chans[0]);
 312         assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer1_chans[0]), funding.getTxId().getReversedBytes());
 313         assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer2_chans[0]), funding.getTxId().getReversedBytes());
 314         for (long chan : peer2_chans) bindings.ChannelDetails_free(chan);
 315
 316         long no_min_val = bindings.COption_u64Z_none();
 317         long inbound_payment = bindings.ChannelManager_create_inbound_payment(peer2.chan_manager, no_min_val, 7200);
 318         assert bindings.CResult_C2Tuple_PaymentHashPaymentSecretZNoneZ_is_ok(inbound_payment);
 319         long payment_tuple = bindings.CResult_C2Tuple_PaymentHashPaymentSecretZNoneZ_get_ok(inbound_payment);
 320         bindings.COption_u64Z_free(no_min_val);
 321
 322         long scorer = bindings.ProbabilisticScorer_new(bindings.ProbabilisticScoringParameters_default(), peer1.router, peer1.logger);
 323         long scorer_interface = bindings.ProbabilisticScorer_as_Score(scorer);
 324
 325         long no_u64 = bindings.COption_u64Z_none();
 326         long invoice_features = bindings.InvoiceFeatures_known();
 327         long payee = bindings.PaymentParameters_new(peer2.node_id, invoice_features, new long[0], no_u64, 6*24*14, (byte)1, (byte)1, new long[0]);
 328         bindings.InvoiceFeatures_free(invoice_features);
 329         bindings.COption_u64Z_free(no_u64);
 330         long route_params = bindings.RouteParameters_new(payee, 1000, 42);
 331         long route = bindings.find_route(peer1.node_id, route_params, peer1.router, peer1_chans, peer1.logger,
 332                 scorer_interface, new byte[32]);
 333         bindings.RouteParameters_free(route_params);
 334         bindings.PaymentParameters_free(payee);
 335         bindings.Score_free(scorer_interface);
 336         bindings.ProbabilisticScorer_free(scorer);
 337
 338         for (long chan : peer1_chans) bindings.ChannelDetails_free(chan);
 339         assert bindings.CResult_RouteLightningErrorZ_is_ok(route);
 340         long payment_res = bindings.ChannelManager_send_payment(peer1.chan_manager, bindings.CResult_RouteLightningErrorZ_get_ok(route),
 341                 bindings.C2Tuple_PaymentHashPaymentSecretZ_get_a(payment_tuple), bindings.C2Tuple_PaymentHashPaymentSecretZ_get_b(payment_tuple));
 342         bindings.CResult_RouteLightningErrorZ_free(route);
 343         bindings.CResult_C2Tuple_PaymentHashPaymentSecretZNoneZ_is_ok(inbound_payment);
 344         assert bindings.CResult_NonePaymentSendFailureZ_is_ok(payment_res);
 345         bindings.CResult_NonePaymentSendFailureZ_free(payment_res);
 346
 347         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 348
 349         bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
 350         assert events.size() == 1;
 351         bindings.LDKEvent forwardable = bindings.LDKEvent_ref_from_ptr(events.get(0));
 352         assert forwardable instanceof bindings.LDKEvent.PendingHTLCsForwardable;
 353         bindings.Event_free(events.remove(0));
 354         bindings.ChannelManager_process_pending_htlc_forwards(peer2.chan_manager);
 355
 356         bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
 357         assert events.size() == 1;
 358         bindings.LDKEvent payment_recvd = bindings.LDKEvent_ref_from_ptr(events.get(0));
 359         assert payment_recvd instanceof bindings.LDKEvent.PaymentReceived;
 360         bindings.LDKPaymentPurpose purpose = bindings.LDKPaymentPurpose_ref_from_ptr(((bindings.LDKEvent.PaymentReceived) payment_recvd).purpose);
 361         assert purpose instanceof bindings.LDKPaymentPurpose.InvoicePayment;
 362         bindings.ChannelManager_claim_funds(peer2.chan_manager, ((bindings.LDKPaymentPurpose.InvoicePayment) purpose).payment_preimage);
 363         bindings.Event_free(events.remove(0));
 364
 365         bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
 366         assert events.size() == 1;
 367         bindings.LDKEvent payment_claimed = bindings.LDKEvent_ref_from_ptr(events.get(0));
 368         assert payment_claimed instanceof bindings.LDKEvent.PaymentClaimed;
 369         bindings.Event_free(events.remove(0));
 370
 371         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 372
 373         bindings.EventsProvider_process_pending_events(peer1.chan_manager_events, handler);
 374         assert events.size() == 2;
 375         bindings.LDKEvent sent = bindings.LDKEvent_ref_from_ptr(events.get(0));
 376         assert sent instanceof bindings.LDKEvent.PaymentSent;
 377         bindings.Event_free(events.remove(0));
 378         bindings.LDKEvent sent_path = bindings.LDKEvent_ref_from_ptr(events.get(0));
 379         assert sent_path instanceof bindings.LDKEvent.PaymentPathSuccessful;
 380         bindings.Event_free(events.remove(0));
 381         Reference.reachabilityFence(events_adder);
 382
 383         bindings.EventHandler_free(handler);
 384
 385         peer1.free();
 386         peer2.free();
 387         bindings.SocketDescriptor_free(descriptor2);
 388         bindings.SocketDescriptor_free(descriptor1.val);
 389     }
 390 }