_ 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.impl.bindings;
   8
   9 import java.util.ArrayList;
  10 import java.util.Arrays;
  11 import java.util.HashMap;
  12 import java.util.concurrent.ConcurrentLinkedQueue;
  13
  14 public class PeerTest {
  15     class Peer {
  16         final long logger;
  17         final long fee_estimator;
  18         final long tx_broadcaster;
  19         final long chain_monitor;
  20         final long keys;
  21         final long keys_interface;
  22         final long config;
  23         final long chan_manager;
  24         final long chan_manager_events;
  25         final long chan_handler;
  26         final long router;
  27         final long route_handler;
  28         final long message_handler;
  29         final long custom_message_handler;
  30         final long peer_manager;
  31         HashMap<String, Long> monitors; // Wow I forgot just how terrible Java is - we can't put a byte array here.
  32         byte[] node_id;
  33         bindings.LDKFeeEstimator fee_est;
  34         bindings.LDKBroadcasterInterface broad_trait;
  35         bindings.LDKLogger log_trait;
  36         bindings.LDKWatch watcher;
  37         ArrayList<Long> results_to_free;
  38
  39         Peer(byte seed) {
  40             this.log_trait = (String arg)-> System.out.println(seed + ": " + arg);
  41             logger = bindings.LDKLogger_new(this.log_trait);
  42             this.fee_est = confirmation_target -> 0;
  43             this.fee_estimator = bindings.LDKFeeEstimator_new(this.fee_est);
  44             this.broad_trait = tx -> {
  45                 // We should broadcast
  46             };
  47             this.results_to_free = new ArrayList<>();
  48             this.tx_broadcaster = bindings.LDKBroadcasterInterface_new(this.broad_trait);
  49             this.monitors = new HashMap<>();
  50             this.watcher = new bindings.LDKWatch() {
  51                 @Override
  52                 public long watch_channel(long funding_txo, long monitor) {
  53                     synchronized (monitors) {
  54                         assert monitors.put(Arrays.toString(bindings.OutPoint_get_txid(funding_txo)), monitor) == null;
  55                     }
  56                     bindings.OutPoint_free(funding_txo);
  57                     long res = bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
  58                     results_to_free.add(res);
  59                     return res;
  60                 }
  61
  62                 @Override
  63                 public long update_channel(long funding_txo, long update) {
  64                     synchronized (monitors) {
  65                         String txid = Arrays.toString(bindings.OutPoint_get_txid(funding_txo));
  66                         assert monitors.containsKey(txid);
  67                         long update_res = bindings.ChannelMonitor_update_monitor(monitors.get(txid), update, tx_broadcaster, fee_estimator, logger);
  68                         assert bindings.LDKCResult_NoneMonitorUpdateErrorZ_result_ok(update_res);
  69                         bindings.CResult_NoneMonitorUpdateErrorZ_free(update_res);
  70                     }
  71                     bindings.OutPoint_free(funding_txo);
  72                     bindings.ChannelMonitorUpdate_free(update);
  73                     long res = bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
  74                     results_to_free.add(res);
  75                     return res;
  76                 }
  77
  78                 @Override
  79                 public long[] release_pending_monitor_events() {
  80                     synchronized (monitors) {
  81                         assert monitors.size() <= 1;
  82                         for (Long mon : monitors.values()) {
  83                             return bindings.ChannelMonitor_get_and_clear_pending_monitor_events(mon);
  84                         }
  85                     }
  86                     return new long[0];
  87                 }
  88             };
  89             this.chain_monitor = bindings.LDKWatch_new(this.watcher);
  90
  91             byte[] key_seed = new byte[32];
  92             for (byte i = 0; i < 32; i++) { key_seed[i] = (byte) (i ^ seed); }
  93             this.keys = bindings.KeysManager_new(key_seed, System.currentTimeMillis() / 1000, (int)(System.currentTimeMillis() * 1000) & 0xffffffff);
  94             this.keys_interface = bindings.KeysManager_as_KeysInterface(keys);
  95             this.config = bindings.UserConfig_default();
  96             long params = bindings.ChainParameters_new(Network.LDKNetwork_Bitcoin, bindings.BestBlock_new(new byte[32], 0));
  97             this.chan_manager = bindings.ChannelManager_new(fee_estimator, chain_monitor, tx_broadcaster, logger, keys_interface, config, params);
  98             this.node_id = bindings.ChannelManager_get_our_node_id(chan_manager);
  99             this.chan_manager_events = bindings.ChannelManager_as_EventsProvider(chan_manager);
 100
 101             this.chan_handler = bindings.ChannelManager_as_ChannelMessageHandler(chan_manager);
 102             this.router = bindings.NetGraphMsgHandler_new(bindings.NetworkGraph_new(new byte[32]), bindings.COption_AccessZ_none(), logger);
 103             this.route_handler = bindings.NetGraphMsgHandler_as_RoutingMessageHandler(router);
 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             this.peer_manager = bindings.PeerManager_new(message_handler, bindings.KeysInterface_get_node_secret(keys_interface), random_data,
 110                     logger, bindings.IgnoringMessageHandler_as_CustomMessageHandler(this.custom_message_handler));
 111         }
 112
 113         void connect_block(Block b, Transaction t, int height) {
 114             long listen = bindings.ChannelManager_as_Listen(chan_manager);
 115             bindings.Listen_block_connected(listen, b.bitcoinSerialize(), height);
 116             bindings.Listen_free(listen);
 117             synchronized (monitors) {
 118                 for (Long mon : monitors.values()) {
 119                     long[] txn;
 120                     if (t != null)
 121                         txn = new long[]{bindings.C2Tuple_usizeTransactionZ_new(1, t.bitcoinSerialize())};
 122                     else
 123                         txn = new long[0];
 124                     byte[] header = Arrays.copyOfRange(b.bitcoinSerialize(), 0, 80);
 125                     long[] ret = bindings.ChannelMonitor_block_connected(mon, header, txn, height, tx_broadcaster, fee_estimator, logger);
 126                     for (long r : ret) {
 127                         bindings.C2Tuple_TxidCVec_C2Tuple_u32TxOutZZZ_free(r);
 128                     }
 129                 }
 130             }
 131         }
 132
 133         void free() {
 134             // Note that we can't rely on finalizer order, so don't bother trying to rely on it here
 135             bindings.Logger_free(logger);
 136             bindings.FeeEstimator_free(fee_estimator);
 137             bindings.BroadcasterInterface_free(tx_broadcaster);
 138             bindings.Watch_free(chain_monitor);
 139             bindings.KeysManager_free(keys);
 140             bindings.KeysInterface_free(keys_interface);
 141             bindings.UserConfig_free(config);
 142             bindings.ChannelManager_free(chan_manager);
 143             bindings.EventsProvider_free(chan_manager_events);
 144             bindings.ChannelMessageHandler_free(chan_handler);
 145             bindings.NetGraphMsgHandler_free(router);
 146             bindings.RoutingMessageHandler_free(route_handler);
 147             //MessageHandler was actually moved into the route_handler!: bindings.MessageHandler_free(message_handler);
 148             bindings.PeerManager_free(peer_manager);
 149             synchronized (monitors) {
 150                 for (Long mon : monitors.values()) {
 151                     bindings.ChannelMonitor_free(mon);
 152                 }
 153             }
 154             for (Long res : results_to_free) {
 155                 bindings.CResult_NoneChannelMonitorUpdateErrZ_free(res);
 156             }
 157         }
 158     }
 159
 160     class LongHolder { long val; }
 161
 162     void do_read_event(ConcurrentLinkedQueue<Thread> list, long pm, long descriptor, byte[] arr) {
 163         Thread thread = new Thread(() -> {
 164             long res = bindings.PeerManager_read_event(pm, descriptor, arr);
 165             assert bindings.LDKCResult_boolPeerHandleErrorZ_result_ok(res);
 166             //assert bindings.deref_bool(bindings.LDKCResult_boolPeerHandleErrorZ_get_inner(res));
 167             bindings.CResult_boolPeerHandleErrorZ_free(res);
 168         });
 169         thread.start();
 170         list.add(thread);
 171     }
 172
 173     void deliver_peer_messages(ConcurrentLinkedQueue<Thread> list, long peer1, long peer2) throws InterruptedException {
 174         bindings.PeerManager_process_events(peer1);
 175         bindings.PeerManager_process_events(peer2);
 176         while (!list.isEmpty()) {
 177             list.poll().join();
 178             bindings.PeerManager_process_events(peer1);
 179             bindings.PeerManager_process_events(peer2);
 180         }
 181     }
 182
 183     @Test
 184     void test_message_handler() throws InterruptedException {
 185         Peer peer1 = new Peer((byte) 1);
 186         Peer peer2 = new Peer((byte) 2);
 187
 188         ConcurrentLinkedQueue<Thread> list = new ConcurrentLinkedQueue<Thread>();
 189         LongHolder descriptor1 = new LongHolder();
 190         LongHolder descriptor1ref = descriptor1;
 191         bindings.LDKSocketDescriptor sock1 = new bindings.LDKSocketDescriptor() {
 192             @Override
 193             public long send_data(byte[] data, boolean resume_read) {
 194                 do_read_event(list, peer1.peer_manager, descriptor1ref.val, data);
 195                 return data.length;
 196             }
 197
 198             @Override public void disconnect_socket() { assert false; }
 199             @Override public boolean eq(long other_arg) { boolean ret = bindings.SocketDescriptor_hash(other_arg) == 2; bindings.SocketDescriptor_free(other_arg); return ret; }
 200             @Override public long hash() { return 2; }
 201         };
 202         long descriptor2 = bindings.LDKSocketDescriptor_new(sock1);
 203
 204         bindings.LDKSocketDescriptor sock2 = new bindings.LDKSocketDescriptor() {
 205             @Override
 206             public long send_data(byte[] data, boolean resume_read) {
 207                 do_read_event(list, peer2.peer_manager, descriptor2, data);
 208                 return data.length;
 209             }
 210
 211             @Override public void disconnect_socket() { assert false; }
 212             @Override public boolean eq(long other_arg) { boolean ret = bindings.SocketDescriptor_hash(other_arg) == 1; bindings.SocketDescriptor_free(other_arg); return ret; }
 213             @Override public long hash() { return 1; }
 214         };
 215         descriptor1.val = bindings.LDKSocketDescriptor_new(sock2);
 216
 217         long init_vec = bindings.PeerManager_new_outbound_connection(peer1.peer_manager, peer2.node_id, descriptor1.val);
 218         assert(bindings.LDKCResult_CVec_u8ZPeerHandleErrorZ_result_ok(init_vec));
 219
 220         long con_res = bindings.PeerManager_new_inbound_connection(peer2.peer_manager, descriptor2);
 221         assert(bindings.LDKCResult_NonePeerHandleErrorZ_result_ok(con_res));
 222         bindings.CResult_NonePeerHandleErrorZ_free(con_res);
 223         do_read_event(list, peer2.peer_manager, descriptor2, bindings.LDKCResult_CVec_u8ZPeerHandleErrorZ_get_ok(init_vec));
 224         bindings.CResult_CVec_u8ZPeerHandleErrorZ_free(init_vec);
 225
 226         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 227
 228         long cc_res = bindings.ChannelManager_create_channel(peer1.chan_manager, peer2.node_id, 10000, 1000, 42, 0);
 229         assert bindings.LDKCResult_NoneAPIErrorZ_result_ok(cc_res);
 230         bindings.CResult_NoneAPIErrorZ_free(cc_res);
 231
 232         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 233
 234         ArrayList<Long> events = new ArrayList();
 235         long handler = bindings.LDKEventHandler_new(events::add);
 236
 237         bindings.EventsProvider_process_pending_events(peer1.chan_manager_events, handler);
 238         assert events.size() == 1;
 239         bindings.LDKEvent event = bindings.LDKEvent_ref_from_ptr(events.get(0));
 240         assert event instanceof bindings.LDKEvent.FundingGenerationReady;
 241         assert ((bindings.LDKEvent.FundingGenerationReady)event).channel_value_satoshis == 10000;
 242         assert ((bindings.LDKEvent.FundingGenerationReady)event).user_channel_id == 42;
 243         byte[] funding_spk = ((bindings.LDKEvent.FundingGenerationReady)event).output_script;
 244         assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
 245         byte[] chan_id = ((bindings.LDKEvent.FundingGenerationReady)event).temporary_channel_id;
 246         bindings.Event_free(events.remove(0));
 247
 248         Transaction funding = new Transaction(NetworkParameters.fromID(NetworkParameters.ID_MAINNET));
 249         funding.addInput(new TransactionInput(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), funding, new byte[0]));
 250         funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
 251         funding.getInput(0).getWitness().setPush(0, new byte[] {0x1});
 252         funding.addOutput(Coin.SATOSHI.multiply(10000), new Script(funding_spk));
 253         bindings.ChannelManager_funding_transaction_generated(peer1.chan_manager, chan_id, funding.bitcoinSerialize());
 254
 255         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 256
 257         Block b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
 258         peer1.connect_block(b, funding, 1);
 259         peer2.connect_block(b, funding, 1);
 260
 261         for (int height = 2; height < 10; height++) {
 262             b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[0]));
 263             peer1.connect_block(b, null, height);
 264             peer2.connect_block(b, null, height);
 265         }
 266
 267         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 268
 269         long[] peer1_chans = bindings.ChannelManager_list_channels(peer1.chan_manager);
 270         long[] peer2_chans = bindings.ChannelManager_list_channels(peer2.chan_manager);
 271         assert peer1_chans.length == 1;
 272         assert peer2_chans.length == 1;
 273         assert bindings.ChannelDetails_get_channel_value_satoshis(peer1_chans[0]) == 10000;
 274         assert bindings.ChannelDetails_get_is_usable(peer1_chans[0]);
 275         assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer1_chans[0]), funding.getTxId().getReversedBytes());
 276         assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer2_chans[0]), funding.getTxId().getReversedBytes());
 277         for (long chan : peer2_chans) bindings.ChannelDetails_free(chan);
 278
 279         long no_min_val = bindings.COption_u64Z_none();
 280         long inbound_payment = bindings.ChannelManager_create_inbound_payment(peer2.chan_manager, no_min_val, 7200, 42);
 281         bindings.COption_u64Z_free(no_min_val);
 282         long netgraph = bindings.NetGraphMsgHandler_get_network_graph(peer1.router);
 283         long scorer = bindings.Scorer_default();
 284         long scorer_interface = bindings.Scorer_as_Score(scorer);
 285         long route = bindings.get_route(peer1.node_id, netgraph, peer2.node_id, 0L, peer1_chans,
 286                 new long[0], 1000, 42, peer1.logger, scorer_interface);
 287         bindings.Score_free(scorer_interface);
 288         bindings.Scorer_free(scorer);
 289         for (long chan : peer1_chans) bindings.ChannelDetails_free(chan);
 290         assert bindings.LDKCResult_RouteLightningErrorZ_result_ok(route);
 291         bindings.NetworkGraph_free(netgraph);
 292         long payment_res = bindings.ChannelManager_send_payment(peer1.chan_manager, bindings.LDKCResult_RouteLightningErrorZ_get_ok(route),
 293                 bindings.C2Tuple_PaymentHashPaymentSecretZ_get_a(inbound_payment), bindings.C2Tuple_PaymentHashPaymentSecretZ_get_b(inbound_payment));
 294         bindings.CResult_RouteLightningErrorZ_free(route);
 295         bindings.C2Tuple_PaymentHashPaymentSecretZ_free(inbound_payment);
 296         assert bindings.LDKCResult_NonePaymentSendFailureZ_result_ok(payment_res);
 297         bindings.CResult_NonePaymentSendFailureZ_free(payment_res);
 298
 299         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 300
 301         bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
 302         assert events.size() == 1;
 303         bindings.LDKEvent forwardable = bindings.LDKEvent_ref_from_ptr(events.get(0));
 304         assert forwardable instanceof bindings.LDKEvent.PendingHTLCsForwardable;
 305         bindings.Event_free(events.remove(0));
 306         bindings.ChannelManager_process_pending_htlc_forwards(peer2.chan_manager);
 307
 308         bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
 309         assert events.size() == 1;
 310         bindings.LDKEvent payment_recvd = bindings.LDKEvent_ref_from_ptr(events.get(0));
 311         assert payment_recvd instanceof bindings.LDKEvent.PaymentReceived;
 312         bindings.LDKPaymentPurpose purpose = bindings.LDKPaymentPurpose_ref_from_ptr(((bindings.LDKEvent.PaymentReceived) payment_recvd).purpose);
 313         assert purpose instanceof bindings.LDKPaymentPurpose.InvoicePayment;
 314         assert bindings.ChannelManager_claim_funds(peer2.chan_manager, ((bindings.LDKPaymentPurpose.InvoicePayment) purpose).payment_preimage);
 315         bindings.Event_free(events.remove(0));
 316
 317         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 318
 319         bindings.EventsProvider_process_pending_events(peer1.chan_manager_events, handler);
 320         assert events.size() == 1;
 321         bindings.LDKEvent sent = bindings.LDKEvent_ref_from_ptr(events.get(0));
 322         assert sent instanceof bindings.LDKEvent.PaymentSent;
 323         bindings.Event_free(events.remove(0));
 324
 325         bindings.EventHandler_free(handler);
 326
 327         peer1.free();
 328         peer2.free();
 329         bindings.SocketDescriptor_free(descriptor2);
 330         bindings.SocketDescriptor_free(descriptor1.val);
 331     }
 332 }