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