_ 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                             long funding_mon_tuple = bindings.C2Tuple_OutPointCVec_MonitorEventZZ_new(funding_txo, mon_events);
  89                             bindings.C2Tuple_OutPointScriptZ_free(funding_info);
  90                             return new long[] {funding_mon_tuple};
  91                         }
  92                     }
  93                     return new long[0];
  94                 }
  95             };
  96             this.chain_monitor = bindings.LDKWatch_new(this.watcher);
  97
  98             byte[] key_seed = new byte[32];
  99             for (byte i = 0; i < 32; i++) { key_seed[i] = (byte) (i ^ seed); }
 100             this.keys = bindings.KeysManager_new(key_seed, System.currentTimeMillis() / 1000, (int)(System.currentTimeMillis() * 1000) & 0xffffffff);
 101             this.keys_interface = bindings.KeysManager_as_KeysInterface(keys);
 102             this.config = bindings.UserConfig_default();
 103             long params = bindings.ChainParameters_new(Network.LDKNetwork_Bitcoin, bindings.BestBlock_new(new byte[32], 0));
 104             this.chan_manager = bindings.ChannelManager_new(fee_estimator, chain_monitor, tx_broadcaster, logger, keys_interface, config, params);
 105             this.node_id = bindings.ChannelManager_get_our_node_id(chan_manager);
 106             this.chan_manager_events = bindings.ChannelManager_as_EventsProvider(chan_manager);
 107
 108             this.chan_handler = bindings.ChannelManager_as_ChannelMessageHandler(chan_manager);
 109             this.router = bindings.NetworkGraph_new(new byte[32], logger);
 110             this.router_wrapper = bindings.P2PGossipSync_new(router, bindings.COption_AccessZ_none(), logger);
 111             this.route_handler = bindings.P2PGossipSync_as_RoutingMessageHandler(router_wrapper);
 112             this.message_handler = bindings.MessageHandler_new(chan_handler, route_handler);
 113             this.custom_message_handler = bindings.IgnoringMessageHandler_new();
 114
 115             byte[] random_data = new byte[32];
 116             for (byte i = 0; i < 32; i++) { random_data[i] = (byte) ((i ^ seed) ^ 0xf0); }
 117
 118             long node_id_result = bindings.KeysInterface_get_node_secret(keys_interface, Recipient.LDKRecipient_Node);
 119             assert bindings.CResult_SecretKeyNoneZ_is_ok(node_id_result);
 120             this.peer_manager = bindings.PeerManager_new(message_handler, bindings.CResult_SecretKeyNoneZ_get_ok(node_id_result),
 121                     random_data, logger, bindings.IgnoringMessageHandler_as_CustomMessageHandler(this.custom_message_handler));
 122             bindings.CResult_SecretKeyNoneZ_free(node_id_result);
 123         }
 124
 125         void connect_block(Block b, Transaction t, int height) {
 126             long listen = bindings.ChannelManager_as_Listen(chan_manager);
 127             bindings.Listen_block_connected(listen, b.bitcoinSerialize(), height);
 128             bindings.Listen_free(listen);
 129             synchronized (monitors) {
 130                 for (Long mon : monitors.values()) {
 131                     long[] txn;
 132                     if (t != null)
 133                         txn = new long[]{bindings.C2Tuple_usizeTransactionZ_new(1, t.bitcoinSerialize())};
 134                     else
 135                         txn = new long[0];
 136                     byte[] header = Arrays.copyOfRange(b.bitcoinSerialize(), 0, 80);
 137                     long[] ret = bindings.ChannelMonitor_block_connected(mon, header, txn, height, tx_broadcaster, fee_estimator, logger);
 138                     for (long r : ret) {
 139                         bindings.C2Tuple_TxidCVec_C2Tuple_u32TxOutZZZ_free(r);
 140                     }
 141                 }
 142             }
 143         }
 144
 145         void free() {
 146             // Note that we can't rely on finalizer order, so don't bother trying to rely on it here
 147             bindings.Logger_free(logger);
 148             bindings.FeeEstimator_free(fee_estimator);
 149             bindings.BroadcasterInterface_free(tx_broadcaster);
 150             bindings.Watch_free(chain_monitor);
 151             bindings.KeysManager_free(keys);
 152             bindings.KeysInterface_free(keys_interface);
 153             bindings.UserConfig_free(config);
 154             bindings.ChannelManager_free(chan_manager);
 155             bindings.EventsProvider_free(chan_manager_events);
 156             bindings.ChannelMessageHandler_free(chan_handler);
 157             bindings.NetworkGraph_free(router);
 158             bindings.P2PGossipSync_free(router_wrapper);
 159             bindings.RoutingMessageHandler_free(route_handler);
 160             //MessageHandler was actually moved into the route_handler!: bindings.MessageHandler_free(message_handler);
 161             bindings.PeerManager_free(peer_manager);
 162             synchronized (monitors) {
 163                 for (Long mon : monitors.values()) {
 164                     bindings.ChannelMonitor_free(mon);
 165                 }
 166             }
 167         }
 168     }
 169
 170     class LongHolder { long val; }
 171     class PendingWrite {
 172         long pm;
 173         long descriptor;
 174         byte[] array;
 175         PendingWrite(long pm, long descriptor, byte[] array) { this.pm = pm; this.descriptor = descriptor; this.array = array; }
 176         void process() {
 177             long res = bindings.PeerManager_read_event(pm, descriptor, array);
 178             assert bindings.CResult_boolPeerHandleErrorZ_is_ok(res);
 179             assert !bindings.CResult_boolPeerHandleErrorZ_get_ok(res);
 180             bindings.CResult_boolPeerHandleErrorZ_free(res);
 181         }
 182     }
 183     ConcurrentLinkedQueue<PendingWrite> pending_writes = new ConcurrentLinkedQueue<>();
 184
 185     void do_read_event(ConcurrentLinkedQueue<Thread> list, long pm, long descriptor, byte[] arr) {
 186         pending_writes.add(new PendingWrite(pm, descriptor, arr));
 187         Thread thread = new Thread(() -> {
 188             synchronized (pending_writes) {
 189                 while (true) {
 190                     PendingWrite write = pending_writes.poll();
 191                     if (write == null) break;
 192                     write.process();
 193                 }
 194             }
 195         });
 196         thread.start();
 197         list.add(thread);
 198     }
 199
 200     void deliver_peer_messages(ConcurrentLinkedQueue<Thread> list, long peer1, long peer2) throws InterruptedException {
 201         bindings.PeerManager_process_events(peer1);
 202         bindings.PeerManager_process_events(peer2);
 203         while (!list.isEmpty()) {
 204             list.poll().join();
 205             bindings.PeerManager_process_events(peer1);
 206             bindings.PeerManager_process_events(peer2);
 207         }
 208     }
 209
 210     @Test
 211     void test_message_handler() throws InterruptedException {
 212         Peer peer1 = new Peer((byte) 1);
 213         Peer peer2 = new Peer((byte) 2);
 214
 215         ConcurrentLinkedQueue<Thread> list = new ConcurrentLinkedQueue<Thread>();
 216         LongHolder descriptor1 = new LongHolder();
 217         LongHolder descriptor1ref = descriptor1;
 218         bindings.LDKSocketDescriptor sock1 = new bindings.LDKSocketDescriptor() {
 219             @Override
 220             public long send_data(byte[] data, boolean resume_read) {
 221                 do_read_event(list, peer1.peer_manager, descriptor1ref.val, data);
 222                 return data.length;
 223             }
 224
 225             @Override public void disconnect_socket() { assert false; }
 226             @Override public boolean eq(long other_arg) { boolean ret = bindings.SocketDescriptor_hash(other_arg) == 2; bindings.SocketDescriptor_free(other_arg); return ret; }
 227             @Override public long hash() { return 2; }
 228         };
 229         long descriptor2 = bindings.LDKSocketDescriptor_new(sock1);
 230
 231         bindings.LDKSocketDescriptor sock2 = new bindings.LDKSocketDescriptor() {
 232             @Override
 233             public long send_data(byte[] data, boolean resume_read) {
 234                 do_read_event(list, peer2.peer_manager, descriptor2, data);
 235                 return data.length;
 236             }
 237
 238             @Override public void disconnect_socket() { assert false; }
 239             @Override public boolean eq(long other_arg) { boolean ret = bindings.SocketDescriptor_hash(other_arg) == 1; bindings.SocketDescriptor_free(other_arg); return ret; }
 240             @Override public long hash() { return 1; }
 241         };
 242         descriptor1.val = bindings.LDKSocketDescriptor_new(sock2);
 243
 244         long no_netaddr = bindings.COption_NetAddressZ_none();
 245         long init_vec = bindings.PeerManager_new_outbound_connection(peer1.peer_manager, peer2.node_id, descriptor1.val, no_netaddr);
 246         assert(bindings.CResult_CVec_u8ZPeerHandleErrorZ_is_ok(init_vec));
 247
 248         long con_res = bindings.PeerManager_new_inbound_connection(peer2.peer_manager, descriptor2, no_netaddr);
 249         assert(bindings.CResult_NonePeerHandleErrorZ_is_ok(con_res));
 250         bindings.CResult_NonePeerHandleErrorZ_free(con_res);
 251         do_read_event(list, peer2.peer_manager, descriptor2, bindings.CResult_CVec_u8ZPeerHandleErrorZ_get_ok(init_vec));
 252         bindings.CResult_CVec_u8ZPeerHandleErrorZ_free(init_vec);
 253         bindings.COption_NetAddressZ_free(no_netaddr);
 254
 255         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 256
 257         long cc_res = bindings.ChannelManager_create_channel(peer1.chan_manager, peer2.node_id, 10000, 1000, 42, 0);
 258         assert bindings.CResult_NoneAPIErrorZ_is_ok(cc_res);
 259         bindings.CResult_NoneAPIErrorZ_free(cc_res);
 260
 261         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 262
 263         ArrayList<Long> events = new ArrayList();
 264         bindings.LDKEventHandler events_adder = events::add;
 265         long handler = bindings.LDKEventHandler_new(events_adder);
 266
 267         bindings.EventsProvider_process_pending_events(peer1.chan_manager_events, handler);
 268         assert events.size() == 1;
 269         bindings.LDKEvent event = bindings.LDKEvent_ref_from_ptr(events.get(0));
 270         assert event instanceof bindings.LDKEvent.FundingGenerationReady;
 271         assert ((bindings.LDKEvent.FundingGenerationReady)event).channel_value_satoshis == 10000;
 272         assert ((bindings.LDKEvent.FundingGenerationReady)event).user_channel_id == 42;
 273         byte[] funding_spk = ((bindings.LDKEvent.FundingGenerationReady)event).output_script;
 274         assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
 275         byte[] chan_id = ((bindings.LDKEvent.FundingGenerationReady)event).temporary_channel_id;
 276         bindings.Event_free(events.remove(0));
 277
 278         Transaction funding = new Transaction(NetworkParameters.fromID(NetworkParameters.ID_MAINNET));
 279         funding.addInput(new TransactionInput(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), funding, new byte[0]));
 280         funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
 281         funding.getInput(0).getWitness().setPush(0, new byte[] {0x1});
 282         funding.addOutput(Coin.SATOSHI.multiply(10000), new Script(funding_spk));
 283         bindings.ChannelManager_funding_transaction_generated(peer1.chan_manager, chan_id, peer2.node_id, funding.bitcoinSerialize());
 284
 285         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 286
 287         Block b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
 288         peer1.connect_block(b, funding, 1);
 289         peer2.connect_block(b, funding, 1);
 290
 291         for (int height = 2; height < 10; height++) {
 292             b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[0]));
 293             peer1.connect_block(b, null, height);
 294             peer2.connect_block(b, null, height);
 295         }
 296
 297         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 298
 299         long[] peer1_chans = bindings.ChannelManager_list_channels(peer1.chan_manager);
 300         long[] peer2_chans = bindings.ChannelManager_list_channels(peer2.chan_manager);
 301         assert peer1_chans.length == 1;
 302         assert peer2_chans.length == 1;
 303         assert bindings.ChannelDetails_get_channel_value_satoshis(peer1_chans[0]) == 10000;
 304         assert bindings.ChannelDetails_get_is_usable(peer1_chans[0]);
 305         assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer1_chans[0]), funding.getTxId().getReversedBytes());
 306         assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer2_chans[0]), funding.getTxId().getReversedBytes());
 307         for (long chan : peer2_chans) bindings.ChannelDetails_free(chan);
 308
 309         long no_min_val = bindings.COption_u64Z_none();
 310         long inbound_payment = bindings.ChannelManager_create_inbound_payment(peer2.chan_manager, no_min_val, 7200);
 311         assert bindings.CResult_C2Tuple_PaymentHashPaymentSecretZNoneZ_is_ok(inbound_payment);
 312         long payment_tuple = bindings.CResult_C2Tuple_PaymentHashPaymentSecretZNoneZ_get_ok(inbound_payment);
 313         bindings.COption_u64Z_free(no_min_val);
 314
 315         long scorer = bindings.ProbabilisticScorer_new(bindings.ProbabilisticScoringParameters_default(), peer1.router, peer1.logger);
 316         long scorer_interface = bindings.ProbabilisticScorer_as_Score(scorer);
 317
 318         long no_u64 = bindings.COption_u64Z_none();
 319         long invoice_features = bindings.InvoiceFeatures_known();
 320         long payee = bindings.PaymentParameters_new(peer2.node_id, invoice_features, new long[0], no_u64, 6*24*14);
 321         bindings.InvoiceFeatures_free(invoice_features);
 322         bindings.COption_u64Z_free(no_u64);
 323         long route_params = bindings.RouteParameters_new(payee, 1000, 42);
 324         long route = bindings.find_route(peer1.node_id, route_params, peer1.router, peer1_chans, peer1.logger,
 325                 scorer_interface, new byte[32]);
 326         bindings.RouteParameters_free(route_params);
 327         bindings.PaymentParameters_free(payee);
 328         bindings.Score_free(scorer_interface);
 329         bindings.ProbabilisticScorer_free(scorer);
 330
 331         for (long chan : peer1_chans) bindings.ChannelDetails_free(chan);
 332         assert bindings.CResult_RouteLightningErrorZ_is_ok(route);
 333         long payment_res = bindings.ChannelManager_send_payment(peer1.chan_manager, bindings.CResult_RouteLightningErrorZ_get_ok(route),
 334                 bindings.C2Tuple_PaymentHashPaymentSecretZ_get_a(payment_tuple), bindings.C2Tuple_PaymentHashPaymentSecretZ_get_b(payment_tuple));
 335         bindings.CResult_RouteLightningErrorZ_free(route);
 336         bindings.CResult_C2Tuple_PaymentHashPaymentSecretZNoneZ_is_ok(inbound_payment);
 337         assert bindings.CResult_NonePaymentSendFailureZ_is_ok(payment_res);
 338         bindings.CResult_NonePaymentSendFailureZ_free(payment_res);
 339
 340         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 341
 342         bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
 343         assert events.size() == 1;
 344         bindings.LDKEvent forwardable = bindings.LDKEvent_ref_from_ptr(events.get(0));
 345         assert forwardable instanceof bindings.LDKEvent.PendingHTLCsForwardable;
 346         bindings.Event_free(events.remove(0));
 347         bindings.ChannelManager_process_pending_htlc_forwards(peer2.chan_manager);
 348
 349         bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
 350         assert events.size() == 1;
 351         bindings.LDKEvent payment_recvd = bindings.LDKEvent_ref_from_ptr(events.get(0));
 352         assert payment_recvd instanceof bindings.LDKEvent.PaymentReceived;
 353         bindings.LDKPaymentPurpose purpose = bindings.LDKPaymentPurpose_ref_from_ptr(((bindings.LDKEvent.PaymentReceived) payment_recvd).purpose);
 354         assert purpose instanceof bindings.LDKPaymentPurpose.InvoicePayment;
 355         bindings.ChannelManager_claim_funds(peer2.chan_manager, ((bindings.LDKPaymentPurpose.InvoicePayment) purpose).payment_preimage);
 356         bindings.Event_free(events.remove(0));
 357
 358         bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
 359         assert events.size() == 1;
 360         bindings.LDKEvent payment_claimed = bindings.LDKEvent_ref_from_ptr(events.get(0));
 361         assert payment_claimed instanceof bindings.LDKEvent.PaymentClaimed;
 362         bindings.Event_free(events.remove(0));
 363
 364         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 365
 366         bindings.EventsProvider_process_pending_events(peer1.chan_manager_events, handler);
 367         assert events.size() == 2;
 368         bindings.LDKEvent sent = bindings.LDKEvent_ref_from_ptr(events.get(0));
 369         assert sent instanceof bindings.LDKEvent.PaymentSent;
 370         bindings.Event_free(events.remove(0));
 371         bindings.LDKEvent sent_path = bindings.LDKEvent_ref_from_ptr(events.get(0));
 372         assert sent_path instanceof bindings.LDKEvent.PaymentPathSuccessful;
 373         bindings.Event_free(events.remove(0));
 374         Reference.reachabilityFence(events_adder);
 375
 376         bindings.EventHandler_free(handler);
 377
 378         peer1.free();
 379         peer2.free();
 380         bindings.SocketDescriptor_free(descriptor2);
 381         bindings.SocketDescriptor_free(descriptor1.val);
 382     }
 383 }