_ 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 peer_manager;
  30         HashMap<String, Long> monitors; // Wow I forgot just how terrible Java is - we can't put a byte array here.
  31         byte[] node_id;
  32         bindings.LDKFeeEstimator fee_est;
  33         bindings.LDKBroadcasterInterface broad_trait;
  34         bindings.LDKLogger log_trait;
  35         bindings.LDKWatch watcher;
  36         ArrayList<Long> results_to_free;
  37
  38         Peer(byte seed) {
  39             this.log_trait = (String arg)-> System.out.println(seed + ": " + arg);
  40             logger = bindings.LDKLogger_new(this.log_trait);
  41             this.fee_est = confirmation_target -> 0;
  42             this.fee_estimator = bindings.LDKFeeEstimator_new(this.fee_est);
  43             this.broad_trait = tx -> {
  44                 // We should broadcast
  45             };
  46             this.results_to_free = new ArrayList<>();
  47             this.tx_broadcaster = bindings.LDKBroadcasterInterface_new(this.broad_trait);
  48             this.monitors = new HashMap<>();
  49             this.watcher = new bindings.LDKWatch() {
  50                 @Override
  51                 public long watch_channel(long funding_txo, long monitor) {
  52                     synchronized (monitors) {
  53                         assert monitors.put(Arrays.toString(bindings.OutPoint_get_txid(funding_txo)), monitor) == null;
  54                     }
  55                     bindings.OutPoint_free(funding_txo);
  56                     long res = bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
  57                     results_to_free.add(res);
  58                     return res;
  59                 }
  60
  61                 @Override
  62                 public long update_channel(long funding_txo, long update) {
  63                     synchronized (monitors) {
  64                         String txid = Arrays.toString(bindings.OutPoint_get_txid(funding_txo));
  65                         assert monitors.containsKey(txid);
  66                         long update_res = bindings.ChannelMonitor_update_monitor(monitors.get(txid), update, tx_broadcaster, fee_estimator, logger);
  67                         assert bindings.LDKCResult_NoneMonitorUpdateErrorZ_result_ok(update_res);
  68                         bindings.CResult_NoneMonitorUpdateErrorZ_free(update_res);
  69                     }
  70                     bindings.OutPoint_free(funding_txo);
  71                     bindings.ChannelMonitorUpdate_free(update);
  72                     long res = bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
  73                     results_to_free.add(res);
  74                     return res;
  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.NetGraphMsgHandler_new(new byte[32], 0, logger);
 102             this.route_handler = bindings.NetGraphMsgHandler_as_RoutingMessageHandler(router);
 103             this.message_handler = bindings.MessageHandler_new(chan_handler, route_handler);
 104
 105             byte[] random_data = new byte[32];
 106             for (byte i = 0; i < 32; i++) { random_data[i] = (byte) ((i ^ seed) ^ 0xf0); }
 107             this.peer_manager = bindings.PeerManager_new(message_handler, bindings.KeysInterface_get_node_secret(keys_interface), random_data, logger);
 108         }
 109
 110         void connect_block(Block b, Transaction t, int height) {
 111             long listen = bindings.ChannelManager_as_Listen(chan_manager);
 112             bindings.Listen_block_connected(listen, b.bitcoinSerialize(), height);
 113             bindings.Listen_free(listen);
 114             synchronized (monitors) {
 115                 for (Long mon : monitors.values()) {
 116                     long[] txn;
 117                     if (t != null)
 118                         txn = new long[]{bindings.C2Tuple_usizeTransactionZ_new(1, t.bitcoinSerialize())};
 119                     else
 120                         txn = new long[0];
 121                     byte[] header = Arrays.copyOfRange(b.bitcoinSerialize(), 0, 80);
 122                     long[] ret = bindings.ChannelMonitor_block_connected(mon, header, txn, height, tx_broadcaster, fee_estimator, logger);
 123                     for (long r : ret) {
 124                         bindings.C2Tuple_TxidCVec_C2Tuple_u32TxOutZZZ_free(r);
 125                     }
 126                 }
 127             }
 128         }
 129
 130         void free() {
 131             // Note that we can't rely on finalizer order, so don't bother trying to rely on it here
 132             bindings.Logger_free(logger);
 133             bindings.FeeEstimator_free(fee_estimator);
 134             bindings.BroadcasterInterface_free(tx_broadcaster);
 135             bindings.Watch_free(chain_monitor);
 136             bindings.KeysManager_free(keys);
 137             bindings.KeysInterface_free(keys_interface);
 138             bindings.UserConfig_free(config);
 139             bindings.ChannelManager_free(chan_manager);
 140             bindings.EventsProvider_free(chan_manager_events);
 141             bindings.ChannelMessageHandler_free(chan_handler);
 142             bindings.NetGraphMsgHandler_free(router);
 143             bindings.RoutingMessageHandler_free(route_handler);
 144             //MessageHandler was actually moved into the route_handler!: bindings.MessageHandler_free(message_handler);
 145             bindings.PeerManager_free(peer_manager);
 146             synchronized (monitors) {
 147                 for (Long mon : monitors.values()) {
 148                     bindings.ChannelMonitor_free(mon);
 149                 }
 150             }
 151             for (Long res : results_to_free) {
 152                 bindings.CResult_NoneChannelMonitorUpdateErrZ_free(res);
 153             }
 154         }
 155     }
 156
 157     class LongHolder { long val; }
 158
 159     void do_read_event(ConcurrentLinkedQueue<Thread> list, long pm, long descriptor, byte[] arr) {
 160         Thread thread = new Thread(() -> {
 161             long res = bindings.PeerManager_read_event(pm, descriptor, arr);
 162             assert bindings.LDKCResult_boolPeerHandleErrorZ_result_ok(res);
 163             //assert bindings.deref_bool(bindings.LDKCResult_boolPeerHandleErrorZ_get_inner(res));
 164             bindings.CResult_boolPeerHandleErrorZ_free(res);
 165         });
 166         thread.start();
 167         list.add(thread);
 168     }
 169
 170     void deliver_peer_messages(ConcurrentLinkedQueue<Thread> list, long peer1, long peer2) throws InterruptedException {
 171         bindings.PeerManager_process_events(peer1);
 172         bindings.PeerManager_process_events(peer2);
 173         while (!list.isEmpty()) {
 174             list.poll().join();
 175             bindings.PeerManager_process_events(peer1);
 176             bindings.PeerManager_process_events(peer2);
 177         }
 178     }
 179
 180     @Test
 181     void test_message_handler() throws InterruptedException {
 182         Peer peer1 = new Peer((byte) 1);
 183         Peer peer2 = new Peer((byte) 2);
 184
 185         ConcurrentLinkedQueue<Thread> list = new ConcurrentLinkedQueue<Thread>();
 186         LongHolder descriptor1 = new LongHolder();
 187         LongHolder descriptor1ref = descriptor1;
 188         bindings.LDKSocketDescriptor sock1 = new bindings.LDKSocketDescriptor() {
 189             @Override
 190             public long send_data(byte[] data, boolean resume_read) {
 191                 do_read_event(list, peer1.peer_manager, descriptor1ref.val, data);
 192                 return data.length;
 193             }
 194
 195             @Override public void disconnect_socket() { assert false; }
 196             @Override public boolean eq(long other_arg) { boolean ret = bindings.SocketDescriptor_hash(other_arg) == 2; bindings.SocketDescriptor_free(other_arg); return ret; }
 197             @Override public long hash() { return 2; }
 198         };
 199         long descriptor2 = bindings.LDKSocketDescriptor_new(sock1);
 200
 201         bindings.LDKSocketDescriptor sock2 = new bindings.LDKSocketDescriptor() {
 202             @Override
 203             public long send_data(byte[] data, boolean resume_read) {
 204                 do_read_event(list, peer2.peer_manager, descriptor2, data);
 205                 return data.length;
 206             }
 207
 208             @Override public void disconnect_socket() { assert false; }
 209             @Override public boolean eq(long other_arg) { boolean ret = bindings.SocketDescriptor_hash(other_arg) == 1; bindings.SocketDescriptor_free(other_arg); return ret; }
 210             @Override public long hash() { return 1; }
 211         };
 212         descriptor1.val = bindings.LDKSocketDescriptor_new(sock2);
 213
 214         long init_vec = bindings.PeerManager_new_outbound_connection(peer1.peer_manager, peer2.node_id, descriptor1.val);
 215         assert(bindings.LDKCResult_CVec_u8ZPeerHandleErrorZ_result_ok(init_vec));
 216
 217         long con_res = bindings.PeerManager_new_inbound_connection(peer2.peer_manager, descriptor2);
 218         assert(bindings.LDKCResult_NonePeerHandleErrorZ_result_ok(con_res));
 219         bindings.CResult_NonePeerHandleErrorZ_free(con_res);
 220         do_read_event(list, peer2.peer_manager, descriptor2, bindings.LDKCResult_CVec_u8ZPeerHandleErrorZ_get_ok(init_vec));
 221         bindings.CResult_CVec_u8ZPeerHandleErrorZ_free(init_vec);
 222
 223         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 224
 225         long cc_res = bindings.ChannelManager_create_channel(peer1.chan_manager, peer2.node_id, 10000, 1000, 42, 0);
 226         assert bindings.LDKCResult_NoneAPIErrorZ_result_ok(cc_res);
 227         bindings.CResult_NoneAPIErrorZ_free(cc_res);
 228
 229         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 230
 231         ArrayList<Long> events = new ArrayList();
 232         long handler = bindings.LDKEventHandler_new(events::add);
 233
 234         bindings.EventsProvider_process_pending_events(peer1.chan_manager_events, handler);
 235         assert events.size() == 1;
 236         bindings.LDKEvent event = bindings.LDKEvent_ref_from_ptr(events.get(0));
 237         assert event instanceof bindings.LDKEvent.FundingGenerationReady;
 238         assert ((bindings.LDKEvent.FundingGenerationReady)event).channel_value_satoshis == 10000;
 239         assert ((bindings.LDKEvent.FundingGenerationReady)event).user_channel_id == 42;
 240         byte[] funding_spk = ((bindings.LDKEvent.FundingGenerationReady)event).output_script;
 241         assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
 242         byte[] chan_id = ((bindings.LDKEvent.FundingGenerationReady)event).temporary_channel_id;
 243         bindings.Event_free(events.remove(0));
 244
 245         Transaction funding = new Transaction(NetworkParameters.fromID(NetworkParameters.ID_MAINNET));
 246         funding.addInput(new TransactionInput(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), funding, new byte[0]));
 247         funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
 248         funding.getInput(0).getWitness().setPush(0, new byte[] {0x1});
 249         funding.addOutput(Coin.SATOSHI.multiply(10000), new Script(funding_spk));
 250         bindings.ChannelManager_funding_transaction_generated(peer1.chan_manager, chan_id, funding.bitcoinSerialize());
 251
 252         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 253
 254         Block b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
 255         peer1.connect_block(b, funding, 1);
 256         peer2.connect_block(b, funding, 1);
 257
 258         for (int height = 2; height < 10; height++) {
 259             b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[0]));
 260             peer1.connect_block(b, null, height);
 261             peer2.connect_block(b, null, height);
 262         }
 263
 264         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 265
 266         long[] peer1_chans = bindings.ChannelManager_list_channels(peer1.chan_manager);
 267         long[] peer2_chans = bindings.ChannelManager_list_channels(peer2.chan_manager);
 268         assert peer1_chans.length == 1;
 269         assert peer2_chans.length == 1;
 270         assert bindings.ChannelDetails_get_channel_value_satoshis(peer1_chans[0]) == 10000;
 271         assert bindings.ChannelDetails_get_is_usable(peer1_chans[0]);
 272         assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer1_chans[0]), funding.getTxId().getReversedBytes());
 273         assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer2_chans[0]), funding.getTxId().getReversedBytes());
 274         for (long chan : peer2_chans) bindings.ChannelDetails_free(chan);
 275
 276         long no_min_val = bindings.COption_u64Z_none();
 277         long inbound_payment = bindings.ChannelManager_create_inbound_payment(peer2.chan_manager, no_min_val, 7200, 42);
 278         bindings.COption_u64Z_free(no_min_val);
 279         long netgraph = bindings.NetGraphMsgHandler_read_locked_graph(peer1.router);
 280         long route = bindings.get_route(peer1.node_id, bindings.LockedNetworkGraph_graph(netgraph), peer2.node_id, 0L, peer1_chans,
 281                 new long[0], 1000, 42, peer1.logger);
 282         for (long chan : peer1_chans) bindings.ChannelDetails_free(chan);
 283         assert bindings.LDKCResult_RouteLightningErrorZ_result_ok(route);
 284         bindings.LockedNetworkGraph_free(netgraph);
 285         long payment_res = bindings.ChannelManager_send_payment(peer1.chan_manager, bindings.LDKCResult_RouteLightningErrorZ_get_ok(route),
 286                 bindings.LDKC2Tuple_PaymentHashPaymentSecretZ_get_a(inbound_payment), bindings.LDKC2Tuple_PaymentHashPaymentSecretZ_get_b(inbound_payment));
 287         bindings.CResult_RouteLightningErrorZ_free(route);
 288         bindings.C2Tuple_PaymentHashPaymentSecretZ_free(inbound_payment);
 289         assert bindings.LDKCResult_NonePaymentSendFailureZ_result_ok(payment_res);
 290         bindings.CResult_NonePaymentSendFailureZ_free(payment_res);
 291
 292         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 293
 294         bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
 295         assert events.size() == 1;
 296         bindings.LDKEvent forwardable = bindings.LDKEvent_ref_from_ptr(events.get(0));
 297         assert forwardable instanceof bindings.LDKEvent.PendingHTLCsForwardable;
 298         bindings.Event_free(events.remove(0));
 299         bindings.ChannelManager_process_pending_htlc_forwards(peer2.chan_manager);
 300
 301         bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
 302         assert events.size() == 1;
 303         bindings.LDKEvent payment_recvd = bindings.LDKEvent_ref_from_ptr(events.get(0));
 304         assert payment_recvd instanceof bindings.LDKEvent.PaymentReceived;
 305         assert bindings.ChannelManager_claim_funds(peer2.chan_manager, ((bindings.LDKEvent.PaymentReceived) payment_recvd).payment_preimage);
 306         bindings.Event_free(events.remove(0));
 307
 308         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 309
 310         bindings.EventsProvider_process_pending_events(peer1.chan_manager_events, handler);
 311         assert events.size() == 1;
 312         bindings.LDKEvent sent = bindings.LDKEvent_ref_from_ptr(events.get(0));
 313         assert sent instanceof bindings.LDKEvent.PaymentSent;
 314         bindings.Event_free(events.remove(0));
 315
 316         bindings.EventHandler_free(handler);
 317
 318         peer1.free();
 319         peer2.free();
 320         bindings.SocketDescriptor_free(descriptor2);
 321         bindings.SocketDescriptor_free(descriptor1.val);
 322     }
 323 }