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.enums.Recipient;
8 import org.ldk.impl.bindings;
10 import java.lang.ref.Reference;
11 import java.util.ArrayList;
12 import java.util.Arrays;
13 import java.util.HashMap;
14 import java.util.LinkedList;
15 import java.util.concurrent.ConcurrentHashMap;
16 import java.util.concurrent.ConcurrentLinkedQueue;
18 public class PeerTest {
21 final long fee_estimator;
22 final long tx_broadcaster;
23 final long chain_monitor;
25 final long keys_interface;
27 final long chan_manager;
28 final long chan_manager_events;
29 final long chan_handler;
31 final long router_wrapper;
32 final long route_handler;
33 final long message_handler;
34 final long custom_message_handler;
35 final long peer_manager;
36 HashMap<String, Long> monitors; // Wow I forgot just how terrible Java is - we can't put a byte array here.
38 bindings.LDKFeeEstimator fee_est;
39 bindings.LDKBroadcasterInterface broad_trait;
40 bindings.LDKLogger log_trait;
41 bindings.LDKWatch watcher;
44 this.log_trait = (long arg) -> {
45 System.out.println(seed + ": " + bindings.Record_get_args(arg));
46 bindings.Record_free(arg);
48 logger = bindings.LDKLogger_new(this.log_trait);
49 this.fee_est = confirmation_target -> 0;
50 this.fee_estimator = bindings.LDKFeeEstimator_new(this.fee_est);
51 this.broad_trait = tx -> {
52 // We should broadcast
54 this.tx_broadcaster = bindings.LDKBroadcasterInterface_new(this.broad_trait);
55 this.monitors = new HashMap<>();
56 this.watcher = new bindings.LDKWatch() {
58 public long watch_channel(long funding_txo, long monitor) {
59 synchronized (monitors) {
60 assert monitors.put(Arrays.toString(bindings.OutPoint_get_txid(funding_txo)), monitor) == null;
62 bindings.OutPoint_free(funding_txo);
63 return bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
67 public long update_channel(long funding_txo, long update) {
68 synchronized (monitors) {
69 String txid = Arrays.toString(bindings.OutPoint_get_txid(funding_txo));
70 assert monitors.containsKey(txid);
71 long update_res = bindings.ChannelMonitor_update_monitor(monitors.get(txid), update, tx_broadcaster, fee_estimator, logger);
72 assert bindings.CResult_NoneNoneZ_is_ok(update_res);
73 bindings.CResult_NoneNoneZ_free(update_res);
75 bindings.OutPoint_free(funding_txo);
76 bindings.ChannelMonitorUpdate_free(update);
77 return bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
81 public long[] release_pending_monitor_events() {
82 synchronized (monitors) {
83 assert monitors.size() <= 1;
84 for (Long mon : monitors.values()) {
85 long funding_info = bindings.ChannelMonitor_get_funding_txo(mon);
86 long funding_txo = bindings.C2Tuple_OutPointScriptZ_get_a(funding_info);
87 long[] mon_events = bindings.ChannelMonitor_get_and_clear_pending_monitor_events(mon);
88 long funding_mon_tuple = bindings.C2Tuple_OutPointCVec_MonitorEventZZ_new(funding_txo, mon_events);
89 bindings.C2Tuple_OutPointScriptZ_free(funding_info);
90 return new long[] {funding_mon_tuple};
96 this.chain_monitor = bindings.LDKWatch_new(this.watcher);
98 byte[] key_seed = new byte[32];
99 for (byte i = 0; i < 32; i++) { key_seed[i] = (byte) (i ^ seed); }
100 this.keys = bindings.KeysManager_new(key_seed, System.currentTimeMillis() / 1000, (int)(System.currentTimeMillis() * 1000) & 0xffffffff);
101 this.keys_interface = bindings.KeysManager_as_KeysInterface(keys);
102 this.config = bindings.UserConfig_default();
103 long params = bindings.ChainParameters_new(Network.LDKNetwork_Bitcoin, bindings.BestBlock_new(new byte[32], 0));
104 this.chan_manager = bindings.ChannelManager_new(fee_estimator, chain_monitor, tx_broadcaster, logger, keys_interface, config, params);
105 this.node_id = bindings.ChannelManager_get_our_node_id(chan_manager);
106 this.chan_manager_events = bindings.ChannelManager_as_EventsProvider(chan_manager);
108 this.chan_handler = bindings.ChannelManager_as_ChannelMessageHandler(chan_manager);
109 this.router = bindings.NetworkGraph_new(new byte[32], logger);
110 this.router_wrapper = bindings.P2PGossipSync_new(router, bindings.COption_AccessZ_none(), logger);
111 this.route_handler = bindings.P2PGossipSync_as_RoutingMessageHandler(router_wrapper);
112 this.message_handler = bindings.MessageHandler_new(chan_handler, route_handler);
113 this.custom_message_handler = bindings.IgnoringMessageHandler_new();
115 byte[] random_data = new byte[32];
116 for (byte i = 0; i < 32; i++) { random_data[i] = (byte) ((i ^ seed) ^ 0xf0); }
118 long node_id_result = bindings.KeysInterface_get_node_secret(keys_interface, Recipient.LDKRecipient_Node);
119 assert bindings.CResult_SecretKeyNoneZ_is_ok(node_id_result);
120 this.peer_manager = bindings.PeerManager_new(message_handler, bindings.CResult_SecretKeyNoneZ_get_ok(node_id_result),
121 random_data, logger, bindings.IgnoringMessageHandler_as_CustomMessageHandler(this.custom_message_handler));
122 bindings.CResult_SecretKeyNoneZ_free(node_id_result);
125 void connect_block(Block b, Transaction t, int height) {
126 long listen = bindings.ChannelManager_as_Listen(chan_manager);
127 bindings.Listen_block_connected(listen, b.bitcoinSerialize(), height);
128 bindings.Listen_free(listen);
129 synchronized (monitors) {
130 for (Long mon : monitors.values()) {
133 txn = new long[]{bindings.C2Tuple_usizeTransactionZ_new(1, t.bitcoinSerialize())};
136 byte[] header = Arrays.copyOfRange(b.bitcoinSerialize(), 0, 80);
137 long[] ret = bindings.ChannelMonitor_block_connected(mon, header, txn, height, tx_broadcaster, fee_estimator, logger);
139 bindings.C2Tuple_TxidCVec_C2Tuple_u32TxOutZZZ_free(r);
146 // Note that we can't rely on finalizer order, so don't bother trying to rely on it here
147 bindings.Logger_free(logger);
148 bindings.FeeEstimator_free(fee_estimator);
149 bindings.BroadcasterInterface_free(tx_broadcaster);
150 bindings.Watch_free(chain_monitor);
151 bindings.KeysManager_free(keys);
152 bindings.KeysInterface_free(keys_interface);
153 bindings.UserConfig_free(config);
154 bindings.ChannelManager_free(chan_manager);
155 bindings.EventsProvider_free(chan_manager_events);
156 bindings.ChannelMessageHandler_free(chan_handler);
157 bindings.NetworkGraph_free(router);
158 bindings.P2PGossipSync_free(router_wrapper);
159 bindings.RoutingMessageHandler_free(route_handler);
160 //MessageHandler was actually moved into the route_handler!: bindings.MessageHandler_free(message_handler);
161 bindings.PeerManager_free(peer_manager);
162 synchronized (monitors) {
163 for (Long mon : monitors.values()) {
164 bindings.ChannelMonitor_free(mon);
170 class LongHolder { long val; }
175 PendingWrite(long pm, long descriptor, byte[] array) { this.pm = pm; this.descriptor = descriptor; this.array = array; }
177 long res = bindings.PeerManager_read_event(pm, descriptor, array);
178 assert bindings.CResult_boolPeerHandleErrorZ_is_ok(res);
179 assert !bindings.CResult_boolPeerHandleErrorZ_get_ok(res);
180 bindings.CResult_boolPeerHandleErrorZ_free(res);
183 ConcurrentLinkedQueue<PendingWrite> pending_writes = new ConcurrentLinkedQueue<>();
185 void do_read_event(ConcurrentLinkedQueue<Thread> list, long pm, long descriptor, byte[] arr) {
186 pending_writes.add(new PendingWrite(pm, descriptor, arr));
187 Thread thread = new Thread(() -> {
188 synchronized (pending_writes) {
190 PendingWrite write = pending_writes.poll();
191 if (write == null) break;
200 void deliver_peer_messages(ConcurrentLinkedQueue<Thread> list, long peer1, long peer2) throws InterruptedException {
201 bindings.PeerManager_process_events(peer1);
202 bindings.PeerManager_process_events(peer2);
203 while (!list.isEmpty()) {
205 bindings.PeerManager_process_events(peer1);
206 bindings.PeerManager_process_events(peer2);
211 void test_message_handler() throws InterruptedException {
212 Peer peer1 = new Peer((byte) 1);
213 Peer peer2 = new Peer((byte) 2);
215 ConcurrentLinkedQueue<Thread> list = new ConcurrentLinkedQueue<Thread>();
216 LongHolder descriptor1 = new LongHolder();
217 LongHolder descriptor1ref = descriptor1;
218 bindings.LDKSocketDescriptor sock1 = new bindings.LDKSocketDescriptor() {
220 public long send_data(byte[] data, boolean resume_read) {
221 do_read_event(list, peer1.peer_manager, descriptor1ref.val, data);
225 @Override public void disconnect_socket() { assert false; }
226 @Override public boolean eq(long other_arg) { boolean ret = bindings.SocketDescriptor_hash(other_arg) == 2; bindings.SocketDescriptor_free(other_arg); return ret; }
227 @Override public long hash() { return 2; }
229 long descriptor2 = bindings.LDKSocketDescriptor_new(sock1);
231 bindings.LDKSocketDescriptor sock2 = new bindings.LDKSocketDescriptor() {
233 public long send_data(byte[] data, boolean resume_read) {
234 do_read_event(list, peer2.peer_manager, descriptor2, data);
238 @Override public void disconnect_socket() { assert false; }
239 @Override public boolean eq(long other_arg) { boolean ret = bindings.SocketDescriptor_hash(other_arg) == 1; bindings.SocketDescriptor_free(other_arg); return ret; }
240 @Override public long hash() { return 1; }
242 descriptor1.val = bindings.LDKSocketDescriptor_new(sock2);
244 long no_netaddr = bindings.COption_NetAddressZ_none();
245 long init_vec = bindings.PeerManager_new_outbound_connection(peer1.peer_manager, peer2.node_id, descriptor1.val, no_netaddr);
246 assert(bindings.CResult_CVec_u8ZPeerHandleErrorZ_is_ok(init_vec));
248 long con_res = bindings.PeerManager_new_inbound_connection(peer2.peer_manager, descriptor2, no_netaddr);
249 assert(bindings.CResult_NonePeerHandleErrorZ_is_ok(con_res));
250 bindings.CResult_NonePeerHandleErrorZ_free(con_res);
251 do_read_event(list, peer2.peer_manager, descriptor2, bindings.CResult_CVec_u8ZPeerHandleErrorZ_get_ok(init_vec));
252 bindings.CResult_CVec_u8ZPeerHandleErrorZ_free(init_vec);
253 bindings.COption_NetAddressZ_free(no_netaddr);
255 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
257 long cc_res = bindings.ChannelManager_create_channel(peer1.chan_manager, peer2.node_id, 10000, 1000, 42, 0);
258 assert bindings.CResult_NoneAPIErrorZ_is_ok(cc_res);
259 bindings.CResult_NoneAPIErrorZ_free(cc_res);
261 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
263 ArrayList<Long> events = new ArrayList();
264 bindings.LDKEventHandler events_adder = events::add;
265 long handler = bindings.LDKEventHandler_new(events_adder);
267 bindings.EventsProvider_process_pending_events(peer1.chan_manager_events, handler);
268 assert events.size() == 1;
269 bindings.LDKEvent event = bindings.LDKEvent_ref_from_ptr(events.get(0));
270 assert event instanceof bindings.LDKEvent.FundingGenerationReady;
271 assert ((bindings.LDKEvent.FundingGenerationReady)event).channel_value_satoshis == 10000;
272 assert ((bindings.LDKEvent.FundingGenerationReady)event).user_channel_id == 42;
273 byte[] funding_spk = ((bindings.LDKEvent.FundingGenerationReady)event).output_script;
274 assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
275 byte[] chan_id = ((bindings.LDKEvent.FundingGenerationReady)event).temporary_channel_id;
276 bindings.Event_free(events.remove(0));
278 Transaction funding = new Transaction(NetworkParameters.fromID(NetworkParameters.ID_MAINNET));
279 funding.addInput(new TransactionInput(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), funding, new byte[0]));
280 funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
281 funding.getInput(0).getWitness().setPush(0, new byte[] {0x1});
282 funding.addOutput(Coin.SATOSHI.multiply(10000), new Script(funding_spk));
283 bindings.ChannelManager_funding_transaction_generated(peer1.chan_manager, chan_id, peer2.node_id, funding.bitcoinSerialize());
285 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
287 Block b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
288 peer1.connect_block(b, funding, 1);
289 peer2.connect_block(b, funding, 1);
291 for (int height = 2; height < 10; height++) {
292 b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[0]));
293 peer1.connect_block(b, null, height);
294 peer2.connect_block(b, null, height);
297 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
299 long[] peer1_chans = bindings.ChannelManager_list_channels(peer1.chan_manager);
300 long[] peer2_chans = bindings.ChannelManager_list_channels(peer2.chan_manager);
301 assert peer1_chans.length == 1;
302 assert peer2_chans.length == 1;
303 assert bindings.ChannelDetails_get_channel_value_satoshis(peer1_chans[0]) == 10000;
304 assert bindings.ChannelDetails_get_is_usable(peer1_chans[0]);
305 assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer1_chans[0]), funding.getTxId().getReversedBytes());
306 assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer2_chans[0]), funding.getTxId().getReversedBytes());
307 for (long chan : peer2_chans) bindings.ChannelDetails_free(chan);
309 long no_min_val = bindings.COption_u64Z_none();
310 long inbound_payment = bindings.ChannelManager_create_inbound_payment(peer2.chan_manager, no_min_val, 7200);
311 assert bindings.CResult_C2Tuple_PaymentHashPaymentSecretZNoneZ_is_ok(inbound_payment);
312 long payment_tuple = bindings.CResult_C2Tuple_PaymentHashPaymentSecretZNoneZ_get_ok(inbound_payment);
313 bindings.COption_u64Z_free(no_min_val);
315 long scorer = bindings.ProbabilisticScorer_new(bindings.ProbabilisticScoringParameters_default(), peer1.router, peer1.logger);
316 long scorer_interface = bindings.ProbabilisticScorer_as_Score(scorer);
318 long no_u64 = bindings.COption_u64Z_none();
319 long invoice_features = bindings.InvoiceFeatures_known();
320 long payee = bindings.PaymentParameters_new(peer2.node_id, invoice_features, new long[0], no_u64, 6*24*14);
321 bindings.InvoiceFeatures_free(invoice_features);
322 bindings.COption_u64Z_free(no_u64);
323 long route_params = bindings.RouteParameters_new(payee, 1000, 42);
324 long route = bindings.find_route(peer1.node_id, route_params, peer1.router, peer1_chans, peer1.logger,
325 scorer_interface, new byte[32]);
326 bindings.RouteParameters_free(route_params);
327 bindings.PaymentParameters_free(payee);
328 bindings.Score_free(scorer_interface);
329 bindings.ProbabilisticScorer_free(scorer);
331 for (long chan : peer1_chans) bindings.ChannelDetails_free(chan);
332 assert bindings.CResult_RouteLightningErrorZ_is_ok(route);
333 long payment_res = bindings.ChannelManager_send_payment(peer1.chan_manager, bindings.CResult_RouteLightningErrorZ_get_ok(route),
334 bindings.C2Tuple_PaymentHashPaymentSecretZ_get_a(payment_tuple), bindings.C2Tuple_PaymentHashPaymentSecretZ_get_b(payment_tuple));
335 bindings.CResult_RouteLightningErrorZ_free(route);
336 bindings.CResult_C2Tuple_PaymentHashPaymentSecretZNoneZ_is_ok(inbound_payment);
337 assert bindings.CResult_NonePaymentSendFailureZ_is_ok(payment_res);
338 bindings.CResult_NonePaymentSendFailureZ_free(payment_res);
340 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
342 bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
343 assert events.size() == 1;
344 bindings.LDKEvent forwardable = bindings.LDKEvent_ref_from_ptr(events.get(0));
345 assert forwardable instanceof bindings.LDKEvent.PendingHTLCsForwardable;
346 bindings.Event_free(events.remove(0));
347 bindings.ChannelManager_process_pending_htlc_forwards(peer2.chan_manager);
349 bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
350 assert events.size() == 1;
351 bindings.LDKEvent payment_recvd = bindings.LDKEvent_ref_from_ptr(events.get(0));
352 assert payment_recvd instanceof bindings.LDKEvent.PaymentReceived;
353 bindings.LDKPaymentPurpose purpose = bindings.LDKPaymentPurpose_ref_from_ptr(((bindings.LDKEvent.PaymentReceived) payment_recvd).purpose);
354 assert purpose instanceof bindings.LDKPaymentPurpose.InvoicePayment;
355 bindings.ChannelManager_claim_funds(peer2.chan_manager, ((bindings.LDKPaymentPurpose.InvoicePayment) purpose).payment_preimage);
356 bindings.Event_free(events.remove(0));
358 bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
359 assert events.size() == 1;
360 bindings.LDKEvent payment_claimed = bindings.LDKEvent_ref_from_ptr(events.get(0));
361 assert payment_claimed instanceof bindings.LDKEvent.PaymentClaimed;
362 bindings.Event_free(events.remove(0));
364 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
366 bindings.EventsProvider_process_pending_events(peer1.chan_manager_events, handler);
367 assert events.size() == 2;
368 bindings.LDKEvent sent = bindings.LDKEvent_ref_from_ptr(events.get(0));
369 assert sent instanceof bindings.LDKEvent.PaymentSent;
370 bindings.Event_free(events.remove(0));
371 bindings.LDKEvent sent_path = bindings.LDKEvent_ref_from_ptr(events.get(0));
372 assert sent_path instanceof bindings.LDKEvent.PaymentPathSuccessful;
373 bindings.Event_free(events.remove(0));
374 Reference.reachabilityFence(events_adder);
376 bindings.EventHandler_free(handler);
380 bindings.SocketDescriptor_free(descriptor2);
381 bindings.SocketDescriptor_free(descriptor1.val);