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;
11 import java.lang.ref.Reference;
12 import java.util.ArrayList;
13 import java.util.Arrays;
14 import java.util.HashMap;
15 import java.util.LinkedList;
16 import java.util.concurrent.ConcurrentHashMap;
17 import java.util.concurrent.ConcurrentLinkedQueue;
19 public class PeerTest {
22 final long fee_estimator;
23 final long tx_broadcaster;
24 final long chain_monitor;
26 final long keys_interface;
28 final long chan_manager;
29 final long chan_manager_events;
30 final long chan_handler;
32 final long router_wrapper;
33 final long route_handler;
34 final long message_handler;
35 final long ignoring_message_handler;
36 final long custom_message_handler;
37 final long onion_message_handler;
38 final long peer_manager;
39 HashMap<String, Long> monitors; // Wow I forgot just how terrible Java is - we can't put a byte array here.
41 bindings.LDKFeeEstimator fee_est;
42 bindings.LDKBroadcasterInterface broad_trait;
43 bindings.LDKLogger log_trait;
44 bindings.LDKWatch watcher;
47 this.log_trait = (long arg) -> {
48 System.out.println(seed + ": " + bindings.Record_get_args(arg));
49 bindings.Record_free(arg);
51 logger = bindings.LDKLogger_new(this.log_trait);
52 this.fee_est = confirmation_target -> 0;
53 this.fee_estimator = bindings.LDKFeeEstimator_new(this.fee_est);
54 this.broad_trait = tx -> {
55 // We should broadcast
57 this.tx_broadcaster = bindings.LDKBroadcasterInterface_new(this.broad_trait);
58 this.monitors = new HashMap<>();
59 this.watcher = new bindings.LDKWatch() {
61 public ChannelMonitorUpdateStatus watch_channel(long funding_txo, long monitor) {
62 synchronized (monitors) {
63 assert monitors.put(Arrays.toString(bindings.OutPoint_get_txid(funding_txo)), monitor) == null;
65 bindings.OutPoint_free(funding_txo);
66 return ChannelMonitorUpdateStatus.LDKChannelMonitorUpdateStatus_Completed;
70 public ChannelMonitorUpdateStatus update_channel(long funding_txo, long update) {
71 synchronized (monitors) {
72 String txid = Arrays.toString(bindings.OutPoint_get_txid(funding_txo));
73 assert monitors.containsKey(txid);
74 long update_res = bindings.ChannelMonitor_update_monitor(monitors.get(txid), update, tx_broadcaster, fee_estimator, logger);
75 assert bindings.CResult_NoneNoneZ_is_ok(update_res);
76 bindings.CResult_NoneNoneZ_free(update_res);
78 bindings.OutPoint_free(funding_txo);
79 bindings.ChannelMonitorUpdate_free(update);
80 return ChannelMonitorUpdateStatus.LDKChannelMonitorUpdateStatus_Completed;
84 public long[] release_pending_monitor_events() {
85 synchronized (monitors) {
86 assert monitors.size() <= 1;
87 for (Long mon : monitors.values()) {
88 long funding_info = bindings.ChannelMonitor_get_funding_txo(mon);
89 long funding_txo = bindings.C2Tuple_OutPointScriptZ_get_a(funding_info);
90 long[] mon_events = bindings.ChannelMonitor_get_and_clear_pending_monitor_events(mon);
91 byte[] counterparty_pk = bindings.ChannelMonitor_get_counterparty_node_id(mon);
92 long funding_mon_tuple = bindings.C3Tuple_OutPointCVec_MonitorEventZPublicKeyZ_new(funding_txo, mon_events, counterparty_pk);
93 bindings.C2Tuple_OutPointScriptZ_free(funding_info);
94 return new long[] {funding_mon_tuple};
100 this.chain_monitor = bindings.LDKWatch_new(this.watcher);
102 byte[] key_seed = new byte[32];
103 for (byte i = 0; i < 32; i++) { key_seed[i] = (byte) (i ^ seed); }
104 this.keys = bindings.KeysManager_new(key_seed, System.currentTimeMillis() / 1000, (int)(System.currentTimeMillis() * 1000) & 0xffffffff);
105 this.keys_interface = bindings.KeysManager_as_KeysInterface(keys);
106 this.config = bindings.UserConfig_default();
107 long params = bindings.ChainParameters_new(Network.LDKNetwork_Bitcoin, bindings.BestBlock_new(new byte[32], 0));
108 this.chan_manager = bindings.ChannelManager_new(fee_estimator, chain_monitor, tx_broadcaster, logger, keys_interface, config, params);
109 this.node_id = bindings.ChannelManager_get_our_node_id(chan_manager);
110 this.chan_manager_events = bindings.ChannelManager_as_EventsProvider(chan_manager);
112 this.chan_handler = bindings.ChannelManager_as_ChannelMessageHandler(chan_manager);
113 this.router = bindings.NetworkGraph_new(new byte[32], logger);
114 this.router_wrapper = bindings.P2PGossipSync_new(router, bindings.COption_AccessZ_none(), logger);
115 this.route_handler = bindings.P2PGossipSync_as_RoutingMessageHandler(router_wrapper);
116 this.ignoring_message_handler = bindings.IgnoringMessageHandler_new();
117 this.custom_message_handler = bindings.IgnoringMessageHandler_as_CustomMessageHandler(this.ignoring_message_handler);
118 this.onion_message_handler = bindings.IgnoringMessageHandler_as_OnionMessageHandler(this.ignoring_message_handler);
119 this.message_handler = bindings.MessageHandler_new(chan_handler, route_handler, this.onion_message_handler);
121 byte[] random_data = new byte[32];
122 for (byte i = 0; i < 32; i++) { random_data[i] = (byte) ((i ^ seed) ^ 0xf0); }
124 long node_id_result = bindings.KeysInterface_get_node_secret(keys_interface, Recipient.LDKRecipient_Node);
125 assert bindings.CResult_SecretKeyNoneZ_is_ok(node_id_result);
126 this.peer_manager = bindings.PeerManager_new(message_handler, bindings.CResult_SecretKeyNoneZ_get_ok(node_id_result),
127 (int)(System.currentTimeMillis() / 1000), random_data, logger, this.custom_message_handler);
128 bindings.CResult_SecretKeyNoneZ_free(node_id_result);
131 void connect_block(Block b, Transaction t, int height) {
132 long listen = bindings.ChannelManager_as_Listen(chan_manager);
133 bindings.Listen_block_connected(listen, b.bitcoinSerialize(), height);
134 bindings.Listen_free(listen);
135 synchronized (monitors) {
136 for (Long mon : monitors.values()) {
139 txn = new long[]{bindings.C2Tuple_usizeTransactionZ_new(1, t.bitcoinSerialize())};
142 byte[] header = Arrays.copyOfRange(b.bitcoinSerialize(), 0, 80);
143 long[] ret = bindings.ChannelMonitor_block_connected(mon, header, txn, height, tx_broadcaster, fee_estimator, logger);
145 bindings.C2Tuple_TxidCVec_C2Tuple_u32TxOutZZZ_free(r);
152 // Note that we can't rely on finalizer order, so don't bother trying to rely on it here
153 bindings.Logger_free(logger);
154 bindings.FeeEstimator_free(fee_estimator);
155 bindings.BroadcasterInterface_free(tx_broadcaster);
156 bindings.Watch_free(chain_monitor);
157 bindings.KeysManager_free(keys);
158 bindings.KeysInterface_free(keys_interface);
159 bindings.UserConfig_free(config);
160 bindings.ChannelManager_free(chan_manager);
161 bindings.EventsProvider_free(chan_manager_events);
162 bindings.ChannelMessageHandler_free(chan_handler);
163 bindings.NetworkGraph_free(router);
164 bindings.P2PGossipSync_free(router_wrapper);
165 bindings.RoutingMessageHandler_free(route_handler);
166 bindings.CustomMessageHandler_free(custom_message_handler);
167 bindings.OnionMessageHandler_free(onion_message_handler);
168 //MessageHandler was actually moved into the route_handler!: bindings.MessageHandler_free(message_handler);
169 bindings.PeerManager_free(peer_manager);
170 synchronized (monitors) {
171 for (Long mon : monitors.values()) {
172 bindings.ChannelMonitor_free(mon);
178 class LongHolder { long val; }
183 PendingWrite(long pm, long descriptor, byte[] array) { this.pm = pm; this.descriptor = descriptor; this.array = array; }
185 long res = bindings.PeerManager_read_event(pm, descriptor, array);
186 assert bindings.CResult_boolPeerHandleErrorZ_is_ok(res);
187 assert !bindings.CResult_boolPeerHandleErrorZ_get_ok(res);
188 bindings.CResult_boolPeerHandleErrorZ_free(res);
191 ConcurrentLinkedQueue<PendingWrite> pending_writes = new ConcurrentLinkedQueue<>();
193 void do_read_event(ConcurrentLinkedQueue<Thread> list, long pm, long descriptor, byte[] arr) {
194 pending_writes.add(new PendingWrite(pm, descriptor, arr));
195 Thread thread = new Thread(() -> {
196 synchronized (pending_writes) {
198 PendingWrite write = pending_writes.poll();
199 if (write == null) break;
208 void deliver_peer_messages(ConcurrentLinkedQueue<Thread> list, long peer1, long peer2) throws InterruptedException {
209 bindings.PeerManager_process_events(peer1);
210 bindings.PeerManager_process_events(peer2);
211 while (!list.isEmpty()) {
213 bindings.PeerManager_process_events(peer1);
214 bindings.PeerManager_process_events(peer2);
219 void test_message_handler() throws InterruptedException {
220 Peer peer1 = new Peer((byte) 1);
221 Peer peer2 = new Peer((byte) 2);
223 ConcurrentLinkedQueue<Thread> list = new ConcurrentLinkedQueue<Thread>();
224 LongHolder descriptor1 = new LongHolder();
225 LongHolder descriptor1ref = descriptor1;
226 bindings.LDKSocketDescriptor sock1 = new bindings.LDKSocketDescriptor() {
228 public long send_data(byte[] data, boolean resume_read) {
229 do_read_event(list, peer1.peer_manager, descriptor1ref.val, data);
233 @Override public void disconnect_socket() { assert false; }
234 @Override public boolean eq(long other_arg) { boolean ret = bindings.SocketDescriptor_hash(other_arg) == 2; bindings.SocketDescriptor_free(other_arg); return ret; }
235 @Override public long hash() { return 2; }
237 long descriptor2 = bindings.LDKSocketDescriptor_new(sock1);
239 bindings.LDKSocketDescriptor sock2 = new bindings.LDKSocketDescriptor() {
241 public long send_data(byte[] data, boolean resume_read) {
242 do_read_event(list, peer2.peer_manager, descriptor2, data);
246 @Override public void disconnect_socket() { assert false; }
247 @Override public boolean eq(long other_arg) { boolean ret = bindings.SocketDescriptor_hash(other_arg) == 1; bindings.SocketDescriptor_free(other_arg); return ret; }
248 @Override public long hash() { return 1; }
250 descriptor1.val = bindings.LDKSocketDescriptor_new(sock2);
252 long no_netaddr = bindings.COption_NetAddressZ_none();
253 long init_vec = bindings.PeerManager_new_outbound_connection(peer1.peer_manager, peer2.node_id, descriptor1.val, no_netaddr);
254 assert(bindings.CResult_CVec_u8ZPeerHandleErrorZ_is_ok(init_vec));
256 long con_res = bindings.PeerManager_new_inbound_connection(peer2.peer_manager, descriptor2, no_netaddr);
257 assert(bindings.CResult_NonePeerHandleErrorZ_is_ok(con_res));
258 bindings.CResult_NonePeerHandleErrorZ_free(con_res);
259 do_read_event(list, peer2.peer_manager, descriptor2, bindings.CResult_CVec_u8ZPeerHandleErrorZ_get_ok(init_vec));
260 bindings.CResult_CVec_u8ZPeerHandleErrorZ_free(init_vec);
261 bindings.COption_NetAddressZ_free(no_netaddr);
263 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
265 long cc_res = bindings.ChannelManager_create_channel(peer1.chan_manager, peer2.node_id, 10000, 1000, 42, 0);
266 assert bindings.CResult_NoneAPIErrorZ_is_ok(cc_res);
267 bindings.CResult_NoneAPIErrorZ_free(cc_res);
269 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
271 ArrayList<Long> events = new ArrayList();
272 bindings.LDKEventHandler events_adder = events::add;
273 long handler = bindings.LDKEventHandler_new(events_adder);
275 bindings.EventsProvider_process_pending_events(peer1.chan_manager_events, handler);
276 assert events.size() == 1;
277 bindings.LDKEvent event = bindings.LDKEvent_ref_from_ptr(events.get(0));
278 assert event instanceof bindings.LDKEvent.FundingGenerationReady;
279 assert ((bindings.LDKEvent.FundingGenerationReady)event).channel_value_satoshis == 10000;
280 assert ((bindings.LDKEvent.FundingGenerationReady)event).user_channel_id == 42;
281 byte[] funding_spk = ((bindings.LDKEvent.FundingGenerationReady)event).output_script;
282 assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
283 byte[] chan_id = ((bindings.LDKEvent.FundingGenerationReady)event).temporary_channel_id;
284 bindings.Event_free(events.remove(0));
286 Transaction funding = new Transaction(NetworkParameters.fromID(NetworkParameters.ID_MAINNET));
287 funding.addInput(new TransactionInput(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), funding, new byte[0]));
288 funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
289 funding.getInput(0).getWitness().setPush(0, new byte[] {0x1});
290 funding.addOutput(Coin.SATOSHI.multiply(10000), new Script(funding_spk));
291 bindings.ChannelManager_funding_transaction_generated(peer1.chan_manager, chan_id, peer2.node_id, funding.bitcoinSerialize());
293 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
295 Block b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
296 peer1.connect_block(b, funding, 1);
297 peer2.connect_block(b, funding, 1);
299 for (int height = 2; height < 10; height++) {
300 b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[0]));
301 peer1.connect_block(b, null, height);
302 peer2.connect_block(b, null, height);
305 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
307 long[] peer1_chans = bindings.ChannelManager_list_channels(peer1.chan_manager);
308 long[] peer2_chans = bindings.ChannelManager_list_channels(peer2.chan_manager);
309 assert peer1_chans.length == 1;
310 assert peer2_chans.length == 1;
311 assert bindings.ChannelDetails_get_channel_value_satoshis(peer1_chans[0]) == 10000;
312 assert bindings.ChannelDetails_get_is_usable(peer1_chans[0]);
313 assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer1_chans[0]), funding.getTxId().getReversedBytes());
314 assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer2_chans[0]), funding.getTxId().getReversedBytes());
315 for (long chan : peer2_chans) bindings.ChannelDetails_free(chan);
317 long no_min_val = bindings.COption_u64Z_none();
318 long inbound_payment = bindings.ChannelManager_create_inbound_payment(peer2.chan_manager, no_min_val, 7200);
319 assert bindings.CResult_C2Tuple_PaymentHashPaymentSecretZNoneZ_is_ok(inbound_payment);
320 long payment_tuple = bindings.CResult_C2Tuple_PaymentHashPaymentSecretZNoneZ_get_ok(inbound_payment);
321 bindings.COption_u64Z_free(no_min_val);
323 long scorer = bindings.ProbabilisticScorer_new(bindings.ProbabilisticScoringParameters_default(), peer1.router, peer1.logger);
324 long scorer_interface = bindings.ProbabilisticScorer_as_Score(scorer);
326 long no_u64 = bindings.COption_u64Z_none();
327 long invoice_features = bindings.InvoiceFeatures_empty();
328 bindings.InvoiceFeatures_set_payment_secret_required(invoice_features);
329 bindings.InvoiceFeatures_set_variable_length_onion_required(invoice_features);
330 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]);
331 bindings.InvoiceFeatures_free(invoice_features);
332 bindings.COption_u64Z_free(no_u64);
333 long route_params = bindings.RouteParameters_new(payee, 1000, 42);
334 long route = bindings.find_route(peer1.node_id, route_params, peer1.router, peer1_chans, peer1.logger,
335 scorer_interface, new byte[32]);
336 bindings.RouteParameters_free(route_params);
337 bindings.PaymentParameters_free(payee);
338 bindings.Score_free(scorer_interface);
339 bindings.ProbabilisticScorer_free(scorer);
341 for (long chan : peer1_chans) bindings.ChannelDetails_free(chan);
342 assert bindings.CResult_RouteLightningErrorZ_is_ok(route);
343 long payment_res = bindings.ChannelManager_send_payment(peer1.chan_manager, bindings.CResult_RouteLightningErrorZ_get_ok(route),
344 bindings.C2Tuple_PaymentHashPaymentSecretZ_get_a(payment_tuple), bindings.C2Tuple_PaymentHashPaymentSecretZ_get_b(payment_tuple));
345 bindings.CResult_RouteLightningErrorZ_free(route);
346 bindings.CResult_C2Tuple_PaymentHashPaymentSecretZNoneZ_is_ok(inbound_payment);
347 assert bindings.CResult_NonePaymentSendFailureZ_is_ok(payment_res);
348 bindings.CResult_NonePaymentSendFailureZ_free(payment_res);
350 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
352 bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
353 assert events.size() == 1;
354 bindings.LDKEvent forwardable = bindings.LDKEvent_ref_from_ptr(events.get(0));
355 assert forwardable instanceof bindings.LDKEvent.PendingHTLCsForwardable;
356 bindings.Event_free(events.remove(0));
357 bindings.ChannelManager_process_pending_htlc_forwards(peer2.chan_manager);
359 bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
360 assert events.size() == 1;
361 bindings.LDKEvent payment_recvd = bindings.LDKEvent_ref_from_ptr(events.get(0));
362 assert payment_recvd instanceof bindings.LDKEvent.PaymentReceived;
363 bindings.LDKPaymentPurpose purpose = bindings.LDKPaymentPurpose_ref_from_ptr(((bindings.LDKEvent.PaymentReceived) payment_recvd).purpose);
364 assert purpose instanceof bindings.LDKPaymentPurpose.InvoicePayment;
365 bindings.ChannelManager_claim_funds(peer2.chan_manager, ((bindings.LDKPaymentPurpose.InvoicePayment) purpose).payment_preimage);
366 bindings.Event_free(events.remove(0));
368 bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
369 assert events.size() == 1;
370 bindings.LDKEvent payment_claimed = bindings.LDKEvent_ref_from_ptr(events.get(0));
371 assert payment_claimed instanceof bindings.LDKEvent.PaymentClaimed;
372 bindings.Event_free(events.remove(0));
374 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
376 bindings.EventsProvider_process_pending_events(peer1.chan_manager_events, handler);
377 assert events.size() == 2;
378 bindings.LDKEvent sent = bindings.LDKEvent_ref_from_ptr(events.get(0));
379 assert sent instanceof bindings.LDKEvent.PaymentSent;
380 bindings.Event_free(events.remove(0));
381 bindings.LDKEvent sent_path = bindings.LDKEvent_ref_from_ptr(events.get(0));
382 assert sent_path instanceof bindings.LDKEvent.PaymentPathSuccessful;
383 bindings.Event_free(events.remove(0));
384 Reference.reachabilityFence(events_adder);
386 bindings.EventHandler_free(handler);
390 bindings.SocketDescriptor_free(descriptor2);
391 bindings.SocketDescriptor_free(descriptor1.val);