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