3 import org.bitcoinj.core.*;
4 import org.bitcoinj.script.Script;
5 import org.junit.jupiter.api.Test;
6 import org.ldk.enums.ChannelMonitorUpdateStatus;
7 import org.ldk.enums.Network;
8 import org.ldk.enums.Recipient;
9 import org.ldk.impl.bindings;
10 import org.ldk.util.UInt128;
12 import java.lang.ref.Reference;
13 import java.util.ArrayList;
14 import java.util.Arrays;
15 import java.util.HashMap;
16 import java.util.LinkedList;
17 import java.util.concurrent.ConcurrentHashMap;
18 import java.util.concurrent.ConcurrentLinkedQueue;
20 public class PeerTest {
23 final long fee_estimator;
24 final long tx_broadcaster;
25 final long chain_monitor;
27 final long keys_interface;
29 final long chan_manager;
30 final long chan_manager_events;
31 final long chan_handler;
33 final long router_wrapper;
34 final long route_handler;
35 final long message_handler;
36 final long ignoring_message_handler;
37 final long custom_message_handler;
38 final long onion_message_handler;
39 final long peer_manager;
40 HashMap<String, Long> monitors; // Wow I forgot just how terrible Java is - we can't put a byte array here.
42 bindings.LDKFeeEstimator fee_est;
43 bindings.LDKBroadcasterInterface broad_trait;
44 bindings.LDKLogger log_trait;
45 bindings.LDKWatch watcher;
48 this.log_trait = (long arg) -> {
49 System.out.println(seed + ": " + bindings.Record_get_args(arg));
50 bindings.Record_free(arg);
52 logger = bindings.LDKLogger_new(this.log_trait);
53 this.fee_est = confirmation_target -> 0;
54 this.fee_estimator = bindings.LDKFeeEstimator_new(this.fee_est);
55 this.broad_trait = tx -> {
56 // We should broadcast
58 this.tx_broadcaster = bindings.LDKBroadcasterInterface_new(this.broad_trait);
59 this.monitors = new HashMap<>();
60 this.watcher = new bindings.LDKWatch() {
62 public ChannelMonitorUpdateStatus watch_channel(long funding_txo, long monitor) {
63 synchronized (monitors) {
64 assert monitors.put(Arrays.toString(bindings.OutPoint_get_txid(funding_txo)), monitor) == null;
66 bindings.OutPoint_free(funding_txo);
67 return ChannelMonitorUpdateStatus.LDKChannelMonitorUpdateStatus_Completed;
71 public ChannelMonitorUpdateStatus update_channel(long funding_txo, long update) {
72 synchronized (monitors) {
73 String txid = Arrays.toString(bindings.OutPoint_get_txid(funding_txo));
74 assert monitors.containsKey(txid);
75 long update_res = bindings.ChannelMonitor_update_monitor(monitors.get(txid), update, tx_broadcaster, fee_estimator, logger);
76 assert bindings.CResult_NoneNoneZ_is_ok(update_res);
77 bindings.CResult_NoneNoneZ_free(update_res);
79 bindings.OutPoint_free(funding_txo);
80 bindings.ChannelMonitorUpdate_free(update);
81 return ChannelMonitorUpdateStatus.LDKChannelMonitorUpdateStatus_Completed;
85 public long[] release_pending_monitor_events() {
86 synchronized (monitors) {
87 assert monitors.size() <= 1;
88 for (Long mon : monitors.values()) {
89 long funding_info = bindings.ChannelMonitor_get_funding_txo(mon);
90 long funding_txo = bindings.C2Tuple_OutPointScriptZ_get_a(funding_info);
91 long[] mon_events = bindings.ChannelMonitor_get_and_clear_pending_monitor_events(mon);
92 byte[] counterparty_pk = bindings.ChannelMonitor_get_counterparty_node_id(mon);
93 long funding_mon_tuple = bindings.C3Tuple_OutPointCVec_MonitorEventZPublicKeyZ_new(funding_txo, mon_events, counterparty_pk);
94 bindings.C2Tuple_OutPointScriptZ_free(funding_info);
95 return new long[] {funding_mon_tuple};
101 this.chain_monitor = bindings.LDKWatch_new(this.watcher);
103 byte[] key_seed = new byte[32];
104 for (byte i = 0; i < 32; i++) { key_seed[i] = (byte) (i ^ seed); }
105 this.keys = bindings.KeysManager_new(key_seed, System.currentTimeMillis() / 1000, (int)(System.currentTimeMillis() * 1000) & 0xffffffff);
106 this.keys_interface = bindings.KeysManager_as_KeysInterface(keys);
107 this.config = bindings.UserConfig_default();
108 long params = bindings.ChainParameters_new(Network.LDKNetwork_Bitcoin, bindings.BestBlock_new(new byte[32], 0));
109 this.chan_manager = bindings.ChannelManager_new(fee_estimator, chain_monitor, tx_broadcaster, logger, keys_interface, config, params);
110 this.node_id = bindings.ChannelManager_get_our_node_id(chan_manager);
111 this.chan_manager_events = bindings.ChannelManager_as_EventsProvider(chan_manager);
113 this.chan_handler = bindings.ChannelManager_as_ChannelMessageHandler(chan_manager);
114 this.router = bindings.NetworkGraph_new(new byte[32], logger);
115 this.router_wrapper = bindings.P2PGossipSync_new(router, bindings.COption_AccessZ_none(), logger);
116 this.route_handler = bindings.P2PGossipSync_as_RoutingMessageHandler(router_wrapper);
117 this.ignoring_message_handler = bindings.IgnoringMessageHandler_new();
118 this.custom_message_handler = bindings.IgnoringMessageHandler_as_CustomMessageHandler(this.ignoring_message_handler);
119 this.onion_message_handler = bindings.IgnoringMessageHandler_as_OnionMessageHandler(this.ignoring_message_handler);
120 this.message_handler = bindings.MessageHandler_new(chan_handler, route_handler, this.onion_message_handler);
122 byte[] random_data = new byte[32];
123 for (byte i = 0; i < 32; i++) { random_data[i] = (byte) ((i ^ seed) ^ 0xf0); }
125 long node_id_result = bindings.KeysInterface_get_node_secret(keys_interface, Recipient.LDKRecipient_Node);
126 assert bindings.CResult_SecretKeyNoneZ_is_ok(node_id_result);
127 this.peer_manager = bindings.PeerManager_new(message_handler, bindings.CResult_SecretKeyNoneZ_get_ok(node_id_result),
128 (int)(System.currentTimeMillis() / 1000), random_data, logger, this.custom_message_handler);
129 bindings.CResult_SecretKeyNoneZ_free(node_id_result);
132 void connect_block(Block b, Transaction t, int height) {
133 long listen = bindings.ChannelManager_as_Listen(chan_manager);
134 bindings.Listen_block_connected(listen, b.bitcoinSerialize(), height);
135 bindings.Listen_free(listen);
136 synchronized (monitors) {
137 for (Long mon : monitors.values()) {
140 txn = new long[]{bindings.C2Tuple_usizeTransactionZ_new(1, t.bitcoinSerialize())};
143 byte[] header = Arrays.copyOfRange(b.bitcoinSerialize(), 0, 80);
144 long[] ret = bindings.ChannelMonitor_block_connected(mon, header, txn, height, tx_broadcaster, fee_estimator, logger);
146 bindings.C2Tuple_TxidCVec_C2Tuple_u32TxOutZZZ_free(r);
153 // Note that we can't rely on finalizer order, so don't bother trying to rely on it here
154 bindings.Logger_free(logger);
155 bindings.FeeEstimator_free(fee_estimator);
156 bindings.BroadcasterInterface_free(tx_broadcaster);
157 bindings.Watch_free(chain_monitor);
158 bindings.KeysManager_free(keys);
159 bindings.KeysInterface_free(keys_interface);
160 bindings.UserConfig_free(config);
161 bindings.ChannelManager_free(chan_manager);
162 bindings.EventsProvider_free(chan_manager_events);
163 bindings.ChannelMessageHandler_free(chan_handler);
164 bindings.NetworkGraph_free(router);
165 bindings.P2PGossipSync_free(router_wrapper);
166 bindings.RoutingMessageHandler_free(route_handler);
167 bindings.CustomMessageHandler_free(custom_message_handler);
168 bindings.OnionMessageHandler_free(onion_message_handler);
169 //MessageHandler was actually moved into the route_handler!: bindings.MessageHandler_free(message_handler);
170 bindings.PeerManager_free(peer_manager);
171 synchronized (monitors) {
172 for (Long mon : monitors.values()) {
173 bindings.ChannelMonitor_free(mon);
179 class LongHolder { long val; }
184 PendingWrite(long pm, long descriptor, byte[] array) { this.pm = pm; this.descriptor = descriptor; this.array = array; }
186 long res = bindings.PeerManager_read_event(pm, descriptor, array);
187 assert bindings.CResult_boolPeerHandleErrorZ_is_ok(res);
188 assert !bindings.CResult_boolPeerHandleErrorZ_get_ok(res);
189 bindings.CResult_boolPeerHandleErrorZ_free(res);
192 ConcurrentLinkedQueue<PendingWrite> pending_writes = new ConcurrentLinkedQueue<>();
194 void do_read_event(ConcurrentLinkedQueue<Thread> list, long pm, long descriptor, byte[] arr) {
195 pending_writes.add(new PendingWrite(pm, descriptor, arr));
196 Thread thread = new Thread(() -> {
197 synchronized (pending_writes) {
199 PendingWrite write = pending_writes.poll();
200 if (write == null) break;
209 void deliver_peer_messages(ConcurrentLinkedQueue<Thread> list, long peer1, long peer2) throws InterruptedException {
210 bindings.PeerManager_process_events(peer1);
211 bindings.PeerManager_process_events(peer2);
212 while (!list.isEmpty()) {
214 bindings.PeerManager_process_events(peer1);
215 bindings.PeerManager_process_events(peer2);
220 void test_message_handler() throws InterruptedException {
221 Peer peer1 = new Peer((byte) 1);
222 Peer peer2 = new Peer((byte) 2);
224 ConcurrentLinkedQueue<Thread> list = new ConcurrentLinkedQueue<Thread>();
225 LongHolder descriptor1 = new LongHolder();
226 LongHolder descriptor1ref = descriptor1;
227 bindings.LDKSocketDescriptor sock1 = new bindings.LDKSocketDescriptor() {
229 public long send_data(byte[] data, boolean resume_read) {
230 do_read_event(list, peer1.peer_manager, descriptor1ref.val, data);
234 @Override public void disconnect_socket() { assert false; }
235 @Override public boolean eq(long other_arg) { boolean ret = bindings.SocketDescriptor_hash(other_arg) == 2; bindings.SocketDescriptor_free(other_arg); return ret; }
236 @Override public long hash() { return 2; }
238 long descriptor2 = bindings.LDKSocketDescriptor_new(sock1);
240 bindings.LDKSocketDescriptor sock2 = new bindings.LDKSocketDescriptor() {
242 public long send_data(byte[] data, boolean resume_read) {
243 do_read_event(list, peer2.peer_manager, descriptor2, data);
247 @Override public void disconnect_socket() { assert false; }
248 @Override public boolean eq(long other_arg) { boolean ret = bindings.SocketDescriptor_hash(other_arg) == 1; bindings.SocketDescriptor_free(other_arg); return ret; }
249 @Override public long hash() { return 1; }
251 descriptor1.val = bindings.LDKSocketDescriptor_new(sock2);
253 long no_netaddr = bindings.COption_NetAddressZ_none();
254 long init_vec = bindings.PeerManager_new_outbound_connection(peer1.peer_manager, peer2.node_id, descriptor1.val, no_netaddr);
255 assert(bindings.CResult_CVec_u8ZPeerHandleErrorZ_is_ok(init_vec));
257 long con_res = bindings.PeerManager_new_inbound_connection(peer2.peer_manager, descriptor2, no_netaddr);
258 assert(bindings.CResult_NonePeerHandleErrorZ_is_ok(con_res));
259 bindings.CResult_NonePeerHandleErrorZ_free(con_res);
260 do_read_event(list, peer2.peer_manager, descriptor2, bindings.CResult_CVec_u8ZPeerHandleErrorZ_get_ok(init_vec));
261 bindings.CResult_CVec_u8ZPeerHandleErrorZ_free(init_vec);
262 bindings.COption_NetAddressZ_free(no_netaddr);
264 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
266 byte[] user_id = new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 };
268 long cc_res = bindings.ChannelManager_create_channel(peer1.chan_manager, peer2.node_id, 10000, 1000, user_id, 0);
269 assert bindings.CResult_NoneAPIErrorZ_is_ok(cc_res);
270 bindings.CResult_NoneAPIErrorZ_free(cc_res);
272 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
274 ArrayList<Long> events = new ArrayList();
275 bindings.LDKEventHandler events_adder = events::add;
276 long handler = bindings.LDKEventHandler_new(events_adder);
278 bindings.EventsProvider_process_pending_events(peer1.chan_manager_events, handler);
279 assert events.size() == 1;
280 bindings.LDKEvent event = bindings.LDKEvent_ref_from_ptr(events.get(0));
281 assert event instanceof bindings.LDKEvent.FundingGenerationReady;
282 assert ((bindings.LDKEvent.FundingGenerationReady)event).channel_value_satoshis == 10000;
283 assert Arrays.equals(((bindings.LDKEvent.FundingGenerationReady)event).user_channel_id, user_id);
284 byte[] funding_spk = ((bindings.LDKEvent.FundingGenerationReady)event).output_script;
285 assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
286 byte[] chan_id = ((bindings.LDKEvent.FundingGenerationReady)event).temporary_channel_id;
287 bindings.Event_free(events.remove(0));
289 Transaction funding = new Transaction(NetworkParameters.fromID(NetworkParameters.ID_MAINNET));
290 funding.addInput(new TransactionInput(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), funding, new byte[0]));
291 funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
292 funding.getInput(0).getWitness().setPush(0, new byte[] {0x1});
293 funding.addOutput(Coin.SATOSHI.multiply(10000), new Script(funding_spk));
294 bindings.ChannelManager_funding_transaction_generated(peer1.chan_manager, chan_id, peer2.node_id, funding.bitcoinSerialize());
296 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
298 Block b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
299 peer1.connect_block(b, funding, 1);
300 peer2.connect_block(b, funding, 1);
302 for (int height = 2; height < 10; height++) {
303 b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[0]));
304 peer1.connect_block(b, null, height);
305 peer2.connect_block(b, null, height);
308 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
310 long[] peer1_chans = bindings.ChannelManager_list_channels(peer1.chan_manager);
311 long[] peer2_chans = bindings.ChannelManager_list_channels(peer2.chan_manager);
312 assert peer1_chans.length == 1;
313 assert peer2_chans.length == 1;
314 assert bindings.ChannelDetails_get_channel_value_satoshis(peer1_chans[0]) == 10000;
315 assert bindings.ChannelDetails_get_is_usable(peer1_chans[0]);
316 assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer1_chans[0]), funding.getTxId().getReversedBytes());
317 assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer2_chans[0]), funding.getTxId().getReversedBytes());
318 for (long chan : peer2_chans) bindings.ChannelDetails_free(chan);
320 bindings.EventsProvider_process_pending_events(peer1.chan_manager_events, handler);
321 assert events.size() == 1;
322 bindings.LDKEvent ready1 = bindings.LDKEvent_ref_from_ptr(events.get(0));
323 assert ready1 instanceof bindings.LDKEvent.ChannelReady;
324 bindings.Event_free(events.remove(0));
326 bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
327 assert events.size() == 1;
328 bindings.LDKEvent ready2 = bindings.LDKEvent_ref_from_ptr(events.get(0));
329 assert ready2 instanceof bindings.LDKEvent.ChannelReady;
330 bindings.Event_free(events.remove(0));
332 long no_min_val = bindings.COption_u64Z_none();
333 long inbound_payment = bindings.ChannelManager_create_inbound_payment(peer2.chan_manager, no_min_val, 7200);
334 assert bindings.CResult_C2Tuple_PaymentHashPaymentSecretZNoneZ_is_ok(inbound_payment);
335 long payment_tuple = bindings.CResult_C2Tuple_PaymentHashPaymentSecretZNoneZ_get_ok(inbound_payment);
336 bindings.COption_u64Z_free(no_min_val);
338 long scorer = bindings.ProbabilisticScorer_new(bindings.ProbabilisticScoringParameters_default(), peer1.router, peer1.logger);
339 long scorer_interface = bindings.ProbabilisticScorer_as_Score(scorer);
341 long no_u64 = bindings.COption_u64Z_none();
342 long invoice_features = bindings.InvoiceFeatures_empty();
343 bindings.InvoiceFeatures_set_payment_secret_required(invoice_features);
344 bindings.InvoiceFeatures_set_variable_length_onion_required(invoice_features);
345 long payee = bindings.PaymentParameters_new(peer2.node_id, invoice_features, new long[0], no_u64, 6*24*14, (byte)1, (byte)1, new long[0]);
346 bindings.InvoiceFeatures_free(invoice_features);
347 bindings.COption_u64Z_free(no_u64);
348 long route_params = bindings.RouteParameters_new(payee, 1000, 42);
349 long route = bindings.find_route(peer1.node_id, route_params, peer1.router, peer1_chans, peer1.logger,
350 scorer_interface, new byte[32]);
351 bindings.RouteParameters_free(route_params);
352 bindings.PaymentParameters_free(payee);
353 bindings.Score_free(scorer_interface);
354 bindings.ProbabilisticScorer_free(scorer);
356 for (long chan : peer1_chans) bindings.ChannelDetails_free(chan);
357 assert bindings.CResult_RouteLightningErrorZ_is_ok(route);
358 long payment_res = bindings.ChannelManager_send_payment(peer1.chan_manager, bindings.CResult_RouteLightningErrorZ_get_ok(route),
359 bindings.C2Tuple_PaymentHashPaymentSecretZ_get_a(payment_tuple),
360 bindings.C2Tuple_PaymentHashPaymentSecretZ_get_b(payment_tuple), new byte[32]);
361 bindings.CResult_RouteLightningErrorZ_free(route);
362 bindings.CResult_C2Tuple_PaymentHashPaymentSecretZNoneZ_is_ok(inbound_payment);
363 assert bindings.CResult_NonePaymentSendFailureZ_is_ok(payment_res);
364 bindings.CResult_NonePaymentSendFailureZ_free(payment_res);
366 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
368 bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
369 assert events.size() == 1;
370 bindings.LDKEvent forwardable = bindings.LDKEvent_ref_from_ptr(events.get(0));
371 assert forwardable instanceof bindings.LDKEvent.PendingHTLCsForwardable;
372 bindings.Event_free(events.remove(0));
373 bindings.ChannelManager_process_pending_htlc_forwards(peer2.chan_manager);
375 bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
376 assert events.size() == 1;
377 bindings.LDKEvent payment_recvd = bindings.LDKEvent_ref_from_ptr(events.get(0));
378 assert payment_recvd instanceof bindings.LDKEvent.PaymentClaimable;
379 bindings.LDKPaymentPurpose purpose = bindings.LDKPaymentPurpose_ref_from_ptr(((bindings.LDKEvent.PaymentClaimable) payment_recvd).purpose);
380 assert purpose instanceof bindings.LDKPaymentPurpose.InvoicePayment;
381 bindings.ChannelManager_claim_funds(peer2.chan_manager, ((bindings.LDKPaymentPurpose.InvoicePayment) purpose).payment_preimage);
382 bindings.Event_free(events.remove(0));
384 bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
385 assert events.size() == 1;
386 bindings.LDKEvent payment_claimed = bindings.LDKEvent_ref_from_ptr(events.get(0));
387 assert payment_claimed instanceof bindings.LDKEvent.PaymentClaimed;
388 bindings.Event_free(events.remove(0));
390 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
392 bindings.EventsProvider_process_pending_events(peer1.chan_manager_events, handler);
393 assert events.size() == 2;
394 bindings.LDKEvent sent = bindings.LDKEvent_ref_from_ptr(events.get(0));
395 assert sent instanceof bindings.LDKEvent.PaymentSent;
396 bindings.Event_free(events.remove(0));
397 bindings.LDKEvent sent_path = bindings.LDKEvent_ref_from_ptr(events.get(0));
398 assert sent_path instanceof bindings.LDKEvent.PaymentPathSuccessful;
399 bindings.Event_free(events.remove(0));
400 Reference.reachabilityFence(events_adder);
402 bindings.EventHandler_free(handler);
406 bindings.SocketDescriptor_free(descriptor2);
407 bindings.SocketDescriptor_free(descriptor1.val);