_ 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.impl.bindings;
   7 import org.ldk.enums.*;
   8
   9 import java.util.Arrays;
  10 import java.util.HashMap;
  11 import java.util.concurrent.ConcurrentLinkedQueue;
  12
  13 public class PeerTest {
  14     class Peer {
  15         final long logger;
  16         final long fee_estimator;
  17         final long tx_broadcaster;
  18         final long chain_monitor;
  19         final long keys;
  20         final long keys_interface;
  21         final long config;
  22         final long chan_manager;
  23         final long chan_manager_events;
  24         final long chan_handler;
  25         final long router;
  26         final long route_handler;
  27         final long message_handler;
  28         final long peer_manager;
  29         HashMap<String, Long> monitors; // Wow I forgot just how terrible Java is - we can't put a byte array here.
  30         byte[] node_id;
  31         bindings.LDKFeeEstimator fee_est;
  32         bindings.LDKBroadcasterInterface broad_trait;
  33         bindings.LDKLogger log_trait;
  34         bindings.LDKWatch watcher;
  35
  36         Peer(byte seed) {
  37             this.log_trait = (String arg)-> System.out.println(seed + ": " + arg);
  38             logger = bindings.LDKLogger_new(this.log_trait);
  39             this.fee_est = confirmation_target -> 0;
  40             this.fee_estimator = bindings.LDKFeeEstimator_new(this.fee_est);
  41             this.broad_trait = tx -> {
  42                 // We should broadcast
  43             };
  44             this.tx_broadcaster = bindings.LDKBroadcasterInterface_new(this.broad_trait);
  45             this.monitors = new HashMap<>();
  46             this.watcher = new bindings.LDKWatch() {
  47                 @Override
  48                 public long watch_channel(long funding_txo, long monitor) {
  49                     synchronized (monitors) {
  50                         assert monitors.put(Arrays.toString(bindings.OutPoint_get_txid(funding_txo)), monitor) == null;
  51                     }
  52                     bindings.OutPoint_free(funding_txo);
  53                     return bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
  54                 }
  55
  56                 @Override
  57                 public long update_channel(long funding_txo, long update) {
  58                     synchronized (monitors) {
  59                         String txid = Arrays.toString(bindings.OutPoint_get_txid(funding_txo));
  60                         assert monitors.containsKey(txid);
  61                         long update_res = bindings.ChannelMonitor_update_monitor(monitors.get(txid), update, tx_broadcaster, logger);
  62                         assert bindings.LDKCResult_NoneMonitorUpdateErrorZ_result_ok(update_res);
  63                         bindings.CResult_NoneMonitorUpdateErrorZ_free(update_res);
  64                     }
  65                     bindings.OutPoint_free(funding_txo);
  66                     bindings.ChannelMonitorUpdate_free(update);
  67                     return bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
  68                 }
  69
  70                 @Override
  71                 public long[] release_pending_monitor_events() {
  72                     synchronized (monitors) {
  73                         assert monitors.size() <= 1;
  74                         for (Long mon : monitors.values()) {
  75                             return bindings.ChannelMonitor_get_and_clear_pending_monitor_events(mon);
  76                         }
  77                     }
  78                     return new long[0];
  79                 }
  80             };
  81             this.chain_monitor = bindings.LDKWatch_new(this.watcher);
  82
  83             byte[] key_seed = new byte[32];
  84             for (byte i = 0; i < 32; i++) { key_seed[i] = (byte) (i ^ seed); }
  85             this.keys = bindings.KeysManager_new(key_seed, LDKNetwork.LDKNetwork_Bitcoin, System.currentTimeMillis() / 1000, (int)(System.currentTimeMillis() * 1000) & 0xffffffff);
  86             this.keys_interface = bindings.KeysManager_as_KeysInterface(keys);
  87             this.config = bindings.UserConfig_default();
  88             this.chan_manager = bindings.ChannelManager_new(LDKNetwork.LDKNetwork_Bitcoin, fee_estimator, chain_monitor, tx_broadcaster, logger, keys_interface, config, 1);
  89             this.node_id = bindings.ChannelManager_get_our_node_id(chan_manager);
  90             this.chan_manager_events = bindings.ChannelManager_as_EventsProvider(chan_manager);
  91
  92             this.chan_handler = bindings.ChannelManager_as_ChannelMessageHandler(chan_manager);
  93             this.router = bindings.NetGraphMsgHandler_new(0, logger);
  94             this.route_handler = bindings.NetGraphMsgHandler_as_RoutingMessageHandler(router);
  95             this.message_handler = bindings.MessageHandler_new(chan_handler, route_handler);
  96
  97             byte[] random_data = new byte[32];
  98             for (byte i = 0; i < 32; i++) { random_data[i] = (byte) ((i ^ seed) ^ 0xf0); }
  99             this.peer_manager = bindings.PeerManager_new(message_handler, bindings.KeysInterface_get_node_secret(keys_interface), random_data, logger);
 100         }
 101
 102         void connect_block(Block b, Transaction t, int height) {
 103             byte[] header = Arrays.copyOfRange(b.bitcoinSerialize(), 0, 80);
 104             long[] txn;
 105             long txdata = 0;
 106             if (t != null) {
 107                 txdata = bindings.new_txpointer_copy_data(t.bitcoinSerialize());
 108                 txn = new long[]{bindings.C2Tuple_usizeTransactionZ_new(1, txdata)};
 109             } else
 110                 txn = new long[0];
 111             bindings.ChannelManager_block_connected(chan_manager, header, txn, height);
 112             if (txdata != 0) bindings.txpointer_free(txdata);
 113             synchronized (monitors) {
 114                 for (Long mon : monitors.values()) {
 115                     if (t != null) {
 116                         txdata = bindings.new_txpointer_copy_data(t.bitcoinSerialize());
 117                         txn = new long[]{bindings.C2Tuple_usizeTransactionZ_new(1, txdata)};
 118                     } else
 119                         txn = new long[0];
 120                     long[] ret = bindings.ChannelMonitor_block_connected(mon, header, txn, height, tx_broadcaster, fee_estimator, logger);
 121                     if (txdata != 0) bindings.txpointer_free(txdata);
 122                     for (long r : ret) {
 123                         bindings.C2Tuple_TxidCVec_TxOutZZ_free(r);
 124                     }
 125                 }
 126             }
 127         }
 128
 129         void free() {
 130             // Note that we can't rely on finalizer order, so don't bother trying to rely on it here
 131             bindings.Logger_free(logger);
 132             bindings.FeeEstimator_free(fee_estimator);
 133             bindings.BroadcasterInterface_free(tx_broadcaster);
 134             bindings.Watch_free(chain_monitor);
 135             bindings.KeysManager_free(keys);
 136             bindings.KeysInterface_free(keys_interface);
 137             bindings.UserConfig_free(config);
 138             bindings.ChannelManager_free(chan_manager);
 139             bindings.EventsProvider_free(chan_manager_events);
 140             bindings.ChannelMessageHandler_free(chan_handler);
 141             bindings.NetGraphMsgHandler_free(router);
 142             bindings.RoutingMessageHandler_free(route_handler);
 143             //MessageHandler was actually moved into the route_handler!: bindings.MessageHandler_free(message_handler);
 144             bindings.PeerManager_free(peer_manager);
 145             synchronized (monitors) {
 146                 for (Long mon : monitors.values()) {
 147                     bindings.ChannelMonitor_free(mon);
 148                 }
 149             }
 150         }
 151     }
 152
 153     class LongHolder { long val; }
 154
 155     void do_read_event(ConcurrentLinkedQueue<Thread> list, long pm, long descriptor, byte[] arr) {
 156         Thread thread = new Thread(() -> {
 157             long res = bindings.PeerManager_read_event(pm, descriptor, arr);
 158             assert bindings.LDKCResult_boolPeerHandleErrorZ_result_ok(res);
 159             //assert bindings.deref_bool(bindings.LDKCResult_boolPeerHandleErrorZ_get_inner(res));
 160             bindings.CResult_boolPeerHandleErrorZ_free(res);
 161         });
 162         thread.start();
 163         list.add(thread);
 164     }
 165
 166     @Test
 167     void test_message_handler() throws InterruptedException {
 168         Peer peer1 = new Peer((byte) 1);
 169         Peer peer2 = new Peer((byte) 2);
 170
 171         ConcurrentLinkedQueue<Thread> list = new ConcurrentLinkedQueue<Thread>();
 172         LongHolder descriptor1 = new LongHolder();
 173         LongHolder descriptor1ref = descriptor1;
 174         bindings.LDKSocketDescriptor sock1 = new bindings.LDKSocketDescriptor() {
 175             @Override
 176             public long send_data(byte[] data, boolean resume_read) {
 177                 do_read_event(list, peer1.peer_manager, descriptor1ref.val, data);
 178                 return data.length;
 179             }
 180
 181             @Override public void disconnect_socket() { assert false; }
 182             @Override public boolean eq(long other_arg) { return bindings.LDKSocketDescriptor_get_obj_from_jcalls(other_arg).hash() == 2; }
 183             @Override public long hash() { return 2; }
 184         };
 185         long descriptor2 = bindings.LDKSocketDescriptor_new(sock1);
 186
 187         bindings.LDKSocketDescriptor sock2 = new bindings.LDKSocketDescriptor() {
 188             @Override
 189             public long send_data(byte[] data, boolean resume_read) {
 190                 do_read_event(list, peer2.peer_manager, descriptor2, data);
 191                 return data.length;
 192             }
 193
 194             @Override public void disconnect_socket() { assert false; }
 195             @Override public boolean eq(long other_arg) { return bindings.LDKSocketDescriptor_get_obj_from_jcalls(other_arg).hash() == 1; }
 196             @Override public long hash() { return 1; }
 197         };
 198         descriptor1.val = bindings.LDKSocketDescriptor_new(sock2);
 199
 200         long init_vec = bindings.PeerManager_new_outbound_connection(peer1.peer_manager, peer2.node_id, descriptor1.val);
 201         assert(bindings.LDKCResult_CVec_u8ZPeerHandleErrorZ_result_ok(init_vec));
 202
 203         long con_res = bindings.PeerManager_new_inbound_connection(peer2.peer_manager, descriptor2);
 204         assert(bindings.LDKCResult_NonePeerHandleErrorZ_result_ok(con_res));
 205         bindings.CResult_NonePeerHandleErrorZ_free(con_res);
 206         do_read_event(list, peer2.peer_manager, descriptor2, bindings.LDKCResult_CVec_u8ZPeerHandleErrorZ_get_ok(init_vec));
 207         bindings.CResult_CVec_u8ZPeerHandleErrorZ_free(init_vec);
 208
 209         while (!list.isEmpty()) { list.poll().join(); }
 210
 211         long cc_res = bindings.ChannelManager_create_channel(peer1.chan_manager, peer2.node_id, 10000, 1000, 42, 0);
 212         assert bindings.LDKCResult_NoneAPIErrorZ_result_ok(cc_res);
 213         bindings.CResult_NoneAPIErrorZ_free(cc_res);
 214
 215         bindings.PeerManager_process_events(peer1.peer_manager);
 216         while (!list.isEmpty()) { list.poll().join(); }
 217         bindings.PeerManager_process_events(peer2.peer_manager);
 218         while (!list.isEmpty()) { list.poll().join(); }
 219
 220         long events[] = bindings.EventsProvider_get_and_clear_pending_events(peer1.chan_manager_events);
 221         assert events.length == 1;
 222         bindings.LDKEvent event = bindings.LDKEvent_ref_from_ptr(events[0]);
 223         assert event instanceof bindings.LDKEvent.FundingGenerationReady;
 224         assert ((bindings.LDKEvent.FundingGenerationReady)event).channel_value_satoshis == 10000;
 225         assert ((bindings.LDKEvent.FundingGenerationReady)event).user_channel_id == 42;
 226         byte[] funding_spk = ((bindings.LDKEvent.FundingGenerationReady)event).output_script;
 227         assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
 228         byte[] chan_id = ((bindings.LDKEvent.FundingGenerationReady)event).temporary_channel_id;
 229         bindings.CVec_EventZ_free(events);
 230
 231         Transaction funding = new Transaction(NetworkParameters.fromID(NetworkParameters.ID_MAINNET));
 232         funding.addInput(new TransactionInput(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), funding, new byte[0]));
 233         funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
 234         funding.getInput(0).getWitness().setPush(0, new byte[] {0x1});
 235         funding.addOutput(Coin.SATOSHI.multiply(10000), new Script(funding_spk));
 236         long funding_txo = bindings.OutPoint_new(funding.getTxId().getReversedBytes(), (short) 0);
 237         bindings.ChannelManager_funding_transaction_generated(peer1.chan_manager, chan_id, funding_txo);
 238         bindings.OutPoint_free(funding_txo);
 239
 240         bindings.PeerManager_process_events(peer1.peer_manager);
 241         while (!list.isEmpty()) { list.poll().join(); }
 242         bindings.PeerManager_process_events(peer2.peer_manager);
 243         while (!list.isEmpty()) { list.poll().join(); }
 244
 245         events = bindings.EventsProvider_get_and_clear_pending_events(peer1.chan_manager_events);
 246         assert events.length == 1;
 247         event = bindings.LDKEvent_ref_from_ptr(events[0]);
 248         assert event instanceof bindings.LDKEvent.FundingBroadcastSafe;
 249         bindings.CVec_EventZ_free(events);
 250
 251         Block b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
 252         peer1.connect_block(b, funding, 1);
 253         peer2.connect_block(b, funding, 1);
 254
 255         for (int height = 2; height < 10; height++) {
 256             b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
 257             peer1.connect_block(b, null, height);
 258             peer2.connect_block(b, null, height);
 259         }
 260
 261         bindings.PeerManager_process_events(peer1.peer_manager);
 262         bindings.PeerManager_process_events(peer2.peer_manager);
 263         while (!list.isEmpty()) { list.poll().join(); }
 264
 265         long[] peer1_chans = bindings.ChannelManager_list_channels(peer1.chan_manager);
 266         long[] peer2_chans = bindings.ChannelManager_list_channels(peer2.chan_manager);
 267         assert peer1_chans.length == 1;
 268         assert peer2_chans.length == 1;
 269         assert bindings.ChannelDetails_get_channel_value_satoshis(peer1_chans[0]) == 10000;
 270         assert bindings.ChannelDetails_get_is_live(peer1_chans[0]);
 271         assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer1_chans[0]), funding.getTxId().getReversedBytes());
 272         assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer2_chans[0]), funding.getTxId().getReversedBytes());
 273         for (long chan : peer2_chans) bindings.ChannelDetails_free(chan);
 274
 275         byte[] payment_preimage = new byte[32];
 276         for (int i = 0; i < 32; i++) payment_preimage[i] = (byte) (i ^ 0x0f);
 277         byte[] payment_hash = Sha256Hash.hash(payment_preimage);
 278         long netgraph = bindings.NetGraphMsgHandler_read_locked_graph(peer1.router);
 279         long route = bindings.get_route(peer1.node_id, bindings.LockedNetworkGraph_graph(netgraph), peer2.node_id, peer1_chans,
 280                 new long[0], 1000, 42, peer1.logger);
 281         for (long chan : peer1_chans) bindings.ChannelDetails_free(chan);
 282         assert bindings.LDKCResult_RouteLightningErrorZ_result_ok(route);
 283         bindings.LockedNetworkGraph_free(netgraph);
 284         long payment_res = bindings.ChannelManager_send_payment(peer1.chan_manager, bindings.LDKCResult_RouteLightningErrorZ_get_ok(route), payment_hash, new byte[32]);
 285         bindings.CResult_RouteLightningErrorZ_free(route);
 286         assert bindings.LDKCResult_NonePaymentSendFailureZ_result_ok(payment_res);
 287         bindings.CResult_NonePaymentSendFailureZ_free(payment_res);
 288
 289         bindings.PeerManager_process_events(peer1.peer_manager);
 290         while (!list.isEmpty()) { list.poll().join(); }
 291         bindings.PeerManager_process_events(peer2.peer_manager);
 292         while (!list.isEmpty()) { list.poll().join(); }
 293         bindings.PeerManager_process_events(peer1.peer_manager);
 294         while (!list.isEmpty()) { list.poll().join(); }
 295
 296         long[] peer2_events = bindings.EventsProvider_get_and_clear_pending_events(peer2.chan_manager_events);
 297         assert peer2_events.length == 1;
 298         bindings.LDKEvent forwardable = bindings.LDKEvent_ref_from_ptr(peer2_events[0]);
 299         assert forwardable instanceof bindings.LDKEvent.PendingHTLCsForwardable;
 300         bindings.CVec_EventZ_free(peer2_events);
 301         bindings.ChannelManager_process_pending_htlc_forwards(peer2.chan_manager);
 302
 303         peer2_events = bindings.EventsProvider_get_and_clear_pending_events(peer2.chan_manager_events);
 304         assert peer2_events.length == 1;
 305         bindings.LDKEvent payment_recvd = bindings.LDKEvent_ref_from_ptr(peer2_events[0]);
 306         assert payment_recvd instanceof bindings.LDKEvent.PaymentReceived;
 307         assert bindings.ChannelManager_claim_funds(peer2.chan_manager, payment_preimage, new byte[32], ((bindings.LDKEvent.PaymentReceived)payment_recvd).amt);
 308         bindings.CVec_EventZ_free(peer2_events);
 309
 310         bindings.PeerManager_process_events(peer2.peer_manager);
 311         while (!list.isEmpty()) { list.poll().join(); }
 312         bindings.PeerManager_process_events(peer1.peer_manager);
 313         while (!list.isEmpty()) { list.poll().join(); }
 314
 315         long[] peer1_events = bindings.EventsProvider_get_and_clear_pending_events(peer1.chan_manager_events);
 316         assert peer1_events.length == 1;
 317         bindings.LDKEvent sent = bindings.LDKEvent_ref_from_ptr(peer1_events[0]);
 318         assert sent instanceof bindings.LDKEvent.PaymentSent;
 319         assert Arrays.equals(((bindings.LDKEvent.PaymentSent)sent).payment_preimage, payment_preimage);
 320         bindings.CVec_EventZ_free(peer1_events);
 321
 322         peer1.free();
 323         peer2.free();
 324         bindings.SocketDescriptor_free(descriptor2);
 325         bindings.SocketDescriptor_free(descriptor1.val);
 326     }
 327 }