_ 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 router_wrapper;
  28         final long route_handler;
  29         final long message_handler;
  30         final long custom_message_handler;
  31         final long peer_manager;
  32         HashMap<String, Long> monitors; // Wow I forgot just how terrible Java is - we can't put a byte array here.
  33         byte[] node_id;
  34         bindings.LDKFeeEstimator fee_est;
  35         bindings.LDKBroadcasterInterface broad_trait;
  36         bindings.LDKLogger log_trait;
  37         bindings.LDKWatch watcher;
  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.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                     return bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
  57                 }
  58
  59                 @Override
  60                 public long update_channel(long funding_txo, long update) {
  61                     synchronized (monitors) {
  62                         String txid = Arrays.toString(bindings.OutPoint_get_txid(funding_txo));
  63                         assert monitors.containsKey(txid);
  64                         long update_res = bindings.ChannelMonitor_update_monitor(monitors.get(txid), update, tx_broadcaster, fee_estimator, logger);
  65                         assert bindings.CResult_NoneMonitorUpdateErrorZ_is_ok(update_res);
  66                         bindings.CResult_NoneMonitorUpdateErrorZ_free(update_res);
  67                     }
  68                     bindings.OutPoint_free(funding_txo);
  69                     bindings.ChannelMonitorUpdate_free(update);
  70                     return bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
  71                 }
  72
  73                 @Override
  74                 public long[] release_pending_monitor_events() {
  75                     synchronized (monitors) {
  76                         assert monitors.size() <= 1;
  77                         for (Long mon : monitors.values()) {
  78                             return bindings.ChannelMonitor_get_and_clear_pending_monitor_events(mon);
  79                         }
  80                     }
  81                     return new long[0];
  82                 }
  83             };
  84             this.chain_monitor = bindings.LDKWatch_new(this.watcher);
  85
  86             byte[] key_seed = new byte[32];
  87             for (byte i = 0; i < 32; i++) { key_seed[i] = (byte) (i ^ seed); }
  88             this.keys = bindings.KeysManager_new(key_seed, System.currentTimeMillis() / 1000, (int)(System.currentTimeMillis() * 1000) & 0xffffffff);
  89             this.keys_interface = bindings.KeysManager_as_KeysInterface(keys);
  90             this.config = bindings.UserConfig_default();
  91             long params = bindings.ChainParameters_new(Network.LDKNetwork_Bitcoin, bindings.BestBlock_new(new byte[32], 0));
  92             this.chan_manager = bindings.ChannelManager_new(fee_estimator, chain_monitor, tx_broadcaster, logger, keys_interface, config, params);
  93             this.node_id = bindings.ChannelManager_get_our_node_id(chan_manager);
  94             this.chan_manager_events = bindings.ChannelManager_as_EventsProvider(chan_manager);
  95
  96             this.chan_handler = bindings.ChannelManager_as_ChannelMessageHandler(chan_manager);
  97             this.router = bindings.NetworkGraph_new(new byte[32]);
  98             this.router_wrapper = bindings.NetGraphMsgHandler_new(router, bindings.COption_AccessZ_none(), logger);
  99             this.route_handler = bindings.NetGraphMsgHandler_as_RoutingMessageHandler(router_wrapper);
 100             this.message_handler = bindings.MessageHandler_new(chan_handler, route_handler);
 101             this.custom_message_handler = bindings.IgnoringMessageHandler_new();
 102
 103             byte[] random_data = new byte[32];
 104             for (byte i = 0; i < 32; i++) { random_data[i] = (byte) ((i ^ seed) ^ 0xf0); }
 105             this.peer_manager = bindings.PeerManager_new(message_handler, bindings.KeysInterface_get_node_secret(keys_interface), random_data,
 106                     logger, bindings.IgnoringMessageHandler_as_CustomMessageHandler(this.custom_message_handler));
 107         }
 108
 109         void connect_block(Block b, Transaction t, int height) {
 110             long listen = bindings.ChannelManager_as_Listen(chan_manager);
 111             bindings.Listen_block_connected(listen, b.bitcoinSerialize(), height);
 112             bindings.Listen_free(listen);
 113             synchronized (monitors) {
 114                 for (Long mon : monitors.values()) {
 115                     long[] txn;
 116                     if (t != null)
 117                         txn = new long[]{bindings.C2Tuple_usizeTransactionZ_new(1, t.bitcoinSerialize())};
 118                     else
 119                         txn = new long[0];
 120                     byte[] header = Arrays.copyOfRange(b.bitcoinSerialize(), 0, 80);
 121                     long[] ret = bindings.ChannelMonitor_block_connected(mon, header, txn, height, tx_broadcaster, fee_estimator, logger);
 122                     for (long r : ret) {
 123                         bindings.C2Tuple_TxidCVec_C2Tuple_u32TxOutZZZ_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.NetworkGraph_free(router);
 142             bindings.NetGraphMsgHandler_free(router_wrapper);
 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         }
 152     }
 153
 154     class LongHolder { long val; }
 155
 156     void do_read_event(ConcurrentLinkedQueue<Thread> list, long pm, long descriptor, byte[] arr) {
 157         Thread thread = new Thread(() -> {
 158             long res = bindings.PeerManager_read_event(pm, descriptor, arr);
 159             assert bindings.CResult_boolPeerHandleErrorZ_is_ok(res);
 160             //assert bindings.deref_bool(bindings.LDKCResult_boolPeerHandleErrorZ_get_inner(res));
 161             bindings.CResult_boolPeerHandleErrorZ_free(res);
 162         });
 163         thread.start();
 164         list.add(thread);
 165     }
 166
 167     void deliver_peer_messages(ConcurrentLinkedQueue<Thread> list, long peer1, long peer2) throws InterruptedException {
 168         bindings.PeerManager_process_events(peer1);
 169         bindings.PeerManager_process_events(peer2);
 170         while (!list.isEmpty()) {
 171             list.poll().join();
 172             bindings.PeerManager_process_events(peer1);
 173             bindings.PeerManager_process_events(peer2);
 174         }
 175     }
 176
 177     @Test
 178     void test_message_handler() throws InterruptedException {
 179         Peer peer1 = new Peer((byte) 1);
 180         Peer peer2 = new Peer((byte) 2);
 181
 182         ConcurrentLinkedQueue<Thread> list = new ConcurrentLinkedQueue<Thread>();
 183         LongHolder descriptor1 = new LongHolder();
 184         LongHolder descriptor1ref = descriptor1;
 185         bindings.LDKSocketDescriptor sock1 = new bindings.LDKSocketDescriptor() {
 186             @Override
 187             public long send_data(byte[] data, boolean resume_read) {
 188                 do_read_event(list, peer1.peer_manager, descriptor1ref.val, data);
 189                 return data.length;
 190             }
 191
 192             @Override public void disconnect_socket() { assert false; }
 193             @Override public boolean eq(long other_arg) { boolean ret = bindings.SocketDescriptor_hash(other_arg) == 2; bindings.SocketDescriptor_free(other_arg); return ret; }
 194             @Override public long hash() { return 2; }
 195         };
 196         long descriptor2 = bindings.LDKSocketDescriptor_new(sock1);
 197
 198         bindings.LDKSocketDescriptor sock2 = new bindings.LDKSocketDescriptor() {
 199             @Override
 200             public long send_data(byte[] data, boolean resume_read) {
 201                 do_read_event(list, peer2.peer_manager, descriptor2, data);
 202                 return data.length;
 203             }
 204
 205             @Override public void disconnect_socket() { assert false; }
 206             @Override public boolean eq(long other_arg) { boolean ret = bindings.SocketDescriptor_hash(other_arg) == 1; bindings.SocketDescriptor_free(other_arg); return ret; }
 207             @Override public long hash() { return 1; }
 208         };
 209         descriptor1.val = bindings.LDKSocketDescriptor_new(sock2);
 210
 211         long init_vec = bindings.PeerManager_new_outbound_connection(peer1.peer_manager, peer2.node_id, descriptor1.val);
 212         assert(bindings.CResult_CVec_u8ZPeerHandleErrorZ_is_ok(init_vec));
 213
 214         long con_res = bindings.PeerManager_new_inbound_connection(peer2.peer_manager, descriptor2);
 215         assert(bindings.CResult_NonePeerHandleErrorZ_is_ok(con_res));
 216         bindings.CResult_NonePeerHandleErrorZ_free(con_res);
 217         do_read_event(list, peer2.peer_manager, descriptor2, bindings.LDKCResult_CVec_u8ZPeerHandleErrorZ_get_ok(init_vec));
 218         bindings.CResult_CVec_u8ZPeerHandleErrorZ_free(init_vec);
 219
 220         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 221
 222         long cc_res = bindings.ChannelManager_create_channel(peer1.chan_manager, peer2.node_id, 10000, 1000, 42, 0);
 223         assert bindings.CResult_NoneAPIErrorZ_is_ok(cc_res);
 224         bindings.CResult_NoneAPIErrorZ_free(cc_res);
 225
 226         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 227
 228         ArrayList<Long> events = new ArrayList();
 229         long handler = bindings.LDKEventHandler_new(events::add);
 230
 231         bindings.EventsProvider_process_pending_events(peer1.chan_manager_events, handler);
 232         assert events.size() == 1;
 233         bindings.LDKEvent event = bindings.LDKEvent_ref_from_ptr(events.get(0));
 234         assert event instanceof bindings.LDKEvent.FundingGenerationReady;
 235         assert ((bindings.LDKEvent.FundingGenerationReady)event).channel_value_satoshis == 10000;
 236         assert ((bindings.LDKEvent.FundingGenerationReady)event).user_channel_id == 42;
 237         byte[] funding_spk = ((bindings.LDKEvent.FundingGenerationReady)event).output_script;
 238         assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
 239         byte[] chan_id = ((bindings.LDKEvent.FundingGenerationReady)event).temporary_channel_id;
 240         bindings.Event_free(events.remove(0));
 241
 242         Transaction funding = new Transaction(NetworkParameters.fromID(NetworkParameters.ID_MAINNET));
 243         funding.addInput(new TransactionInput(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), funding, new byte[0]));
 244         funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
 245         funding.getInput(0).getWitness().setPush(0, new byte[] {0x1});
 246         funding.addOutput(Coin.SATOSHI.multiply(10000), new Script(funding_spk));
 247         bindings.ChannelManager_funding_transaction_generated(peer1.chan_manager, chan_id, funding.bitcoinSerialize());
 248
 249         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 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[0]));
 257             peer1.connect_block(b, null, height);
 258             peer2.connect_block(b, null, height);
 259         }
 260
 261         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 262
 263         long[] peer1_chans = bindings.ChannelManager_list_channels(peer1.chan_manager);
 264         long[] peer2_chans = bindings.ChannelManager_list_channels(peer2.chan_manager);
 265         assert peer1_chans.length == 1;
 266         assert peer2_chans.length == 1;
 267         assert bindings.ChannelDetails_get_channel_value_satoshis(peer1_chans[0]) == 10000;
 268         assert bindings.ChannelDetails_get_is_usable(peer1_chans[0]);
 269         assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer1_chans[0]), funding.getTxId().getReversedBytes());
 270         assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer2_chans[0]), funding.getTxId().getReversedBytes());
 271         for (long chan : peer2_chans) bindings.ChannelDetails_free(chan);
 272
 273         long no_min_val = bindings.COption_u64Z_none();
 274         long inbound_payment = bindings.ChannelManager_create_inbound_payment(peer2.chan_manager, no_min_val, 7200, 42);
 275         bindings.COption_u64Z_free(no_min_val);
 276         long scorer = bindings.Scorer_default();
 277         long scorer_interface = bindings.Scorer_as_Score(scorer);
 278
 279         long no_u64 = bindings.COption_u64Z_none();
 280         long invoice_features = bindings.InvoiceFeatures_known();
 281         long payee = bindings.Payee_new(peer2.node_id, invoice_features, new long[0], no_u64);
 282         bindings.InvoiceFeatures_free(invoice_features);
 283         bindings.COption_u64Z_free(no_u64);
 284         long route_params = bindings.RouteParameters_new(payee, 1000, 42);
 285         long route = bindings.find_route(peer1.node_id, route_params, peer1.router, peer1_chans,
 286                 peer1.logger, scorer_interface);
 287         bindings.RouteParameters_free(route_params);
 288         bindings.Payee_free(payee);
 289         bindings.Score_free(scorer_interface);
 290         bindings.Scorer_free(scorer);
 291
 292         for (long chan : peer1_chans) bindings.ChannelDetails_free(chan);
 293         assert bindings.CResult_RouteLightningErrorZ_is_ok(route);
 294         long payment_res = bindings.ChannelManager_send_payment(peer1.chan_manager, bindings.LDKCResult_RouteLightningErrorZ_get_ok(route),
 295                 bindings.C2Tuple_PaymentHashPaymentSecretZ_get_a(inbound_payment), bindings.C2Tuple_PaymentHashPaymentSecretZ_get_b(inbound_payment));
 296         bindings.CResult_RouteLightningErrorZ_free(route);
 297         bindings.C2Tuple_PaymentHashPaymentSecretZ_free(inbound_payment);
 298         assert bindings.CResult_NonePaymentSendFailureZ_is_ok(payment_res);
 299         bindings.CResult_NonePaymentSendFailureZ_free(payment_res);
 300
 301         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 302
 303         bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
 304         assert events.size() == 1;
 305         bindings.LDKEvent forwardable = bindings.LDKEvent_ref_from_ptr(events.get(0));
 306         assert forwardable instanceof bindings.LDKEvent.PendingHTLCsForwardable;
 307         bindings.Event_free(events.remove(0));
 308         bindings.ChannelManager_process_pending_htlc_forwards(peer2.chan_manager);
 309
 310         bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
 311         assert events.size() == 1;
 312         bindings.LDKEvent payment_recvd = bindings.LDKEvent_ref_from_ptr(events.get(0));
 313         assert payment_recvd instanceof bindings.LDKEvent.PaymentReceived;
 314         bindings.LDKPaymentPurpose purpose = bindings.LDKPaymentPurpose_ref_from_ptr(((bindings.LDKEvent.PaymentReceived) payment_recvd).purpose);
 315         assert purpose instanceof bindings.LDKPaymentPurpose.InvoicePayment;
 316         assert bindings.ChannelManager_claim_funds(peer2.chan_manager, ((bindings.LDKPaymentPurpose.InvoicePayment) purpose).payment_preimage);
 317         bindings.Event_free(events.remove(0));
 318
 319         deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
 320
 321         bindings.EventsProvider_process_pending_events(peer1.chan_manager_events, handler);
 322         assert events.size() == 1;
 323         bindings.LDKEvent sent = bindings.LDKEvent_ref_from_ptr(events.get(0));
 324         assert sent instanceof bindings.LDKEvent.PaymentSent;
 325         bindings.Event_free(events.remove(0));
 326
 327         bindings.EventHandler_free(handler);
 328
 329         peer1.free();
 330         peer2.free();
 331         bindings.SocketDescriptor_free(descriptor2);
 332         bindings.SocketDescriptor_free(descriptor1.val);
 333     }
 334 }