3 import org.bitcoinj.core.*;
4 import org.bitcoinj.script.Script;
5 import org.junit.jupiter.api.Test;
6 import org.ldk.impl.bindings;
7 import org.ldk.enums.*;
9 import java.util.ArrayList;
10 import java.util.Arrays;
11 import java.util.HashMap;
12 import java.util.List;
13 import java.util.concurrent.ConcurrentHashMap;
14 import java.util.concurrent.ConcurrentLinkedQueue;
16 public class PeerTest {
19 final long fee_estimator;
20 final long tx_broadcaster;
21 final long chain_monitor;
23 final long keys_interface;
25 final long chan_manager;
26 final long chan_manager_events;
27 final long chan_handler;
29 final long route_handler;
30 final long 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.
34 bindings.LDKFeeEstimator fee_est;
35 bindings.LDKBroadcasterInterface broad_trait;
36 bindings.LDKLogger log_trait;
37 bindings.LDKWatch watcher;
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
47 this.tx_broadcaster = bindings.LDKBroadcasterInterface_new(this.broad_trait);
48 this.monitors = new HashMap<>();
49 this.watcher = new bindings.LDKWatch() {
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;
55 bindings.OutPoint_free(funding_txo);
56 return bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
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, logger);
65 assert bindings.LDKCResult_NoneMonitorUpdateErrorZ_result_ok(update_res);
66 bindings.CResult_NoneMonitorUpdateErrorZ_free(update_res);
68 bindings.OutPoint_free(funding_txo);
69 //bindings.ChannelMonitorUpdate_free(update); We'll need this after 681
70 return bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
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);
81 return bindings.new_empty_slice_vec();
84 this.chain_monitor = bindings.LDKWatch_new(this.watcher);
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, LDKNetwork.LDKNetwork_Bitcoin, System.currentTimeMillis() / 1000, (int)(System.currentTimeMillis() * 1000) & 0xffffffff);
89 this.keys_interface = bindings.KeysManager_as_KeysInterface(keys);
90 this.config = bindings.UserConfig_default();
91 this.chan_manager = bindings.ChannelManager_new(LDKNetwork.LDKNetwork_Bitcoin, fee_estimator, chain_monitor, tx_broadcaster, logger, keys_interface, config, 1);
92 this.node_id = bindings.ChannelManager_get_our_node_id(chan_manager);
93 this.chan_manager_events = bindings.ChannelManager_as_EventsProvider(chan_manager);
95 this.chan_handler = bindings.ChannelManager_as_ChannelMessageHandler(chan_manager);
96 this.router = bindings.NetGraphMsgHandler_new(0, logger);
97 this.route_handler = bindings.NetGraphMsgHandler_as_RoutingMessageHandler(router);
98 this.message_handler = bindings.MessageHandler_new(chan_handler, route_handler);
100 byte[] random_data = new byte[32];
101 for (byte i = 0; i < 32; i++) { random_data[i] = (byte) ((i ^ seed) ^ 0xf0); }
102 this.peer_manager = bindings.PeerManager_new(message_handler, bindings.LDKKeysInterface_call_get_node_secret(keys_interface), random_data, logger);
105 void connect_block(Block b, Transaction t, int height) {
106 byte[] header = b.bitcoinSerialize();
109 txn = bindings.LDKCVecTempl_C2TupleTempl_usize__Transaction_new(
110 new long[] {bindings.C2Tuple_usizeTransactionZ_new(1, bindings.new_txpointer_copy_data(t.bitcoinSerialize()))});
112 txn = bindings.LDKCVecTempl_C2TupleTempl_usize__Transaction_new(new long[0]);
113 bindings.ChannelManager_block_connected(chan_manager, header, txn, height);
114 synchronized (monitors) {
115 for (Long mon : monitors.values()) {
117 txn = bindings.LDKCVecTempl_C2TupleTempl_usize__Transaction_new(
118 new long[] {bindings.C2Tuple_usizeTransactionZ_new(1, bindings.new_txpointer_copy_data(t.bitcoinSerialize()))});
120 txn = bindings.LDKCVecTempl_C2TupleTempl_usize__Transaction_new(new long[0]);
121 long ret = bindings.ChannelMonitor_block_connected(mon, header, txn, height, tx_broadcaster, fee_estimator, logger);
122 bindings.CVec_C2Tuple_TxidCVec_TxOutZZZ_free(ret);
128 // Note that we can't rely on finalizer order, so don't bother trying to rely on it here
129 bindings.Logger_free(logger);
130 bindings.FeeEstimator_free(fee_estimator);
131 bindings.BroadcasterInterface_free(tx_broadcaster);
132 bindings.Watch_free(chain_monitor);
133 bindings.KeysManager_free(keys);
134 bindings.KeysInterface_free(keys_interface);
135 bindings.ChannelManager_free(chan_manager);
136 bindings.EventsProvider_free(chan_manager_events);
137 bindings.ChannelMessageHandler_free(chan_handler);
138 bindings.NetGraphMsgHandler_free(router);
139 bindings.RoutingMessageHandler_free(route_handler);
140 //MessageHandler was actually moved into the route_handler!: bindings.MessageHandler_free(message_handler);
141 bindings.PeerManager_free(peer_manager);
142 synchronized (monitors) {
143 for (Long mon : monitors.values()) {
144 bindings.ChannelMonitor_free(mon);
150 class LongHolder { long val; }
152 byte[] do_read_event(ConcurrentLinkedQueue<Thread> list, long pm, long descriptor, long data) {
153 byte[] arr = bindings.get_u8_slice_bytes(data);
154 Thread thread = new Thread(() -> {
155 long arr_vec = bindings.bytes_to_u8_vec(arr);
156 long res = bindings.PeerManager_read_event(pm, descriptor, arr_vec);
157 assert bindings.LDKCResult_boolPeerHandleErrorZ_result_ok(res);
158 //assert bindings.deref_bool(bindings.LDKCResult_boolPeerHandleErrorZ_get_inner(res));
159 bindings.CResult_boolPeerHandleErrorZ_free(res);
160 bindings.CVec_u8Z_free(arr_vec);
168 void test_message_handler() throws InterruptedException {
169 Peer peer1 = new Peer((byte) 1);
170 Peer peer2 = new Peer((byte) 2);
172 ConcurrentLinkedQueue<Thread> list = new ConcurrentLinkedQueue<Thread>();
173 LongHolder descriptor1 = new LongHolder();
174 LongHolder descriptor1ref = descriptor1;
175 bindings.LDKSocketDescriptor sock1 = new bindings.LDKSocketDescriptor() {
177 public long send_data(long data, boolean resume_read) {
178 return do_read_event(list, peer1.peer_manager, descriptor1ref.val, data).length;
181 @Override public void disconnect_socket() { assert false; }
182 @Override public boolean eq(long other_arg) { return bindings.LDKSocketDescriptor_get_obj_from_jcalls(other_arg).hash() == 2; }
183 @Override public long hash() { return 2; }
185 long descriptor2 = bindings.LDKSocketDescriptor_new(sock1);
187 bindings.LDKSocketDescriptor sock2 = new bindings.LDKSocketDescriptor() {
189 public long send_data(long data, boolean resume_read) {
190 return do_read_event(list, peer2.peer_manager, descriptor2, data).length;
193 @Override public void disconnect_socket() { assert false; }
194 @Override public boolean eq(long other_arg) { return bindings.LDKSocketDescriptor_get_obj_from_jcalls(other_arg).hash() == 1; }
195 @Override public long hash() { return 1; }
197 descriptor1.val = bindings.LDKSocketDescriptor_new(sock2);
199 long init_vec = bindings.PeerManager_new_outbound_connection(peer1.peer_manager, peer2.node_id, descriptor1.val);
200 assert(bindings.LDKCResult_CVec_u8ZPeerHandleErrorZ_result_ok(init_vec));
202 long con_res = bindings.PeerManager_new_inbound_connection(peer2.peer_manager, descriptor2);
203 assert(bindings.LDKCResult_NonePeerHandleErrorZ_result_ok(con_res));
204 bindings.CResult_NonePeerHandleErrorZ_free(con_res);
205 do_read_event(list, peer2.peer_manager, descriptor2, bindings.LDKCResult_CVec_u8ZPeerHandleErrorZ_get_inner(init_vec));
206 bindings.CResult_CVec_u8ZPeerHandleErrorZ_free(init_vec);
208 while (!list.isEmpty()) { list.poll().join(); }
210 long cc_res = bindings.ChannelManager_create_channel(peer1.chan_manager, peer2.node_id, 10000, 1000, 42, 0);
211 assert bindings.LDKCResult_NoneAPIErrorZ_result_ok(cc_res);
212 bindings.CResult_NoneAPIErrorZ_free(cc_res);
214 bindings.PeerManager_process_events(peer1.peer_manager);
215 while (!list.isEmpty()) { list.poll().join(); }
216 bindings.PeerManager_process_events(peer2.peer_manager);
217 while (!list.isEmpty()) { list.poll().join(); }
219 long events = bindings.LDKEventsProvider_call_get_and_clear_pending_events(peer1.chan_manager_events);
220 bindings.VecOrSliceDef events_arr_info = bindings.LDKCVecTempl_Event_arr_info(events);
221 assert events_arr_info.datalen == 1;
222 bindings.LDKEvent event = bindings.LDKEvent_ref_from_ptr(events_arr_info.dataptr);
223 assert event instanceof bindings.LDKEvent.FundingGenerationReady;
224 assert ((bindings.LDKEvent.FundingGenerationReady)event).channel_value_satoshis == 10000;
225 assert ((bindings.LDKEvent.FundingGenerationReady)event).user_channel_id == 42;
226 byte[] funding_spk = bindings.get_u8_slice_bytes(((bindings.LDKEvent.FundingGenerationReady)event).output_script);
227 assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
228 byte[] chan_id = ((bindings.LDKEvent.FundingGenerationReady)event).temporary_channel_id;
229 bindings.CVec_EventZ_free(events);
231 Transaction funding = new Transaction(NetworkParameters.fromID(NetworkParameters.ID_MAINNET));
232 funding.addInput(new TransactionInput(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), funding, new byte[0]));
233 funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
234 funding.getInput(0).getWitness().setPush(0, new byte[] {0x1});
235 funding.addOutput(Coin.SATOSHI.multiply(10000), new Script(funding_spk));
236 bindings.ChannelManager_funding_transaction_generated(peer1.chan_manager, chan_id, bindings.OutPoint_new(funding.getTxId().getReversedBytes(), (short) 0));
238 bindings.PeerManager_process_events(peer1.peer_manager);
239 while (!list.isEmpty()) { list.poll().join(); }
240 bindings.PeerManager_process_events(peer2.peer_manager);
241 while (!list.isEmpty()) { list.poll().join(); }
243 events = bindings.LDKEventsProvider_call_get_and_clear_pending_events(peer1.chan_manager_events);
244 events_arr_info = bindings.LDKCVecTempl_Event_arr_info(events);
245 assert events_arr_info.datalen == 1;
246 event = bindings.LDKEvent_ref_from_ptr(events_arr_info.dataptr);
247 assert event instanceof bindings.LDKEvent.FundingBroadcastSafe;
248 bindings.CVec_EventZ_free(events);
250 Block b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
251 peer1.connect_block(b, funding, 1);
252 peer2.connect_block(b, funding, 1);
254 for (int height = 2; height < 10; height++) {
255 b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
256 peer1.connect_block(b, null, height);
257 peer2.connect_block(b, null, height);
260 bindings.PeerManager_process_events(peer1.peer_manager);
261 bindings.PeerManager_process_events(peer2.peer_manager);
262 while (!list.isEmpty()) { list.poll().join(); }
264 long peer1_chans = bindings.ChannelManager_list_channels(peer1.chan_manager);
265 long peer2_chans = bindings.ChannelManager_list_channels(peer2.chan_manager);
266 assert bindings.vec_slice_len(peer1_chans) == 1;
267 assert bindings.vec_slice_len(peer2_chans) == 1;
268 long[] peer_1_chan_info = bindings.LDKCVecTempl_ChannelDetails_arr_info(peer1_chans);
269 assert peer_1_chan_info.length == 1;
270 assert bindings.ChannelDetails_get_channel_value_satoshis(peer_1_chan_info[0]) == 10000;
271 assert bindings.ChannelDetails_get_is_live(peer_1_chan_info[0]);
272 assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer_1_chan_info[0]), funding.getTxId().getReversedBytes());
273 assert Arrays.equals(bindings.ChannelDetails_get_channel_id(bindings.LDKCVecTempl_ChannelDetails_arr_info(peer2_chans)[0]), funding.getTxId().getReversedBytes());
274 bindings.CVec_ChannelDetailsZ_free(peer2_chans);
276 byte[] payment_preimage = new byte[32];
277 for (int i = 0; i < 32; i++) payment_preimage[i] = (byte) (i ^ 0x0f);
278 byte[] payment_hash = Sha256Hash.hash(payment_preimage);
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, peer1_chans,
281 bindings.LDKCVecTempl_RouteHint_new(new long[0]), 1000, 42, peer1.logger);
282 bindings.CVec_ChannelDetailsZ_free(peer1_chans);
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_inner(route), payment_hash, new byte[32]);
286 bindings.CResult_RouteLightningErrorZ_free(route);
287 assert bindings.LDKCResult_NonePaymentSendFailureZ_result_ok(payment_res);
288 bindings.CResult_NonePaymentSendFailureZ_free(payment_res);
290 bindings.PeerManager_process_events(peer1.peer_manager);
291 while (!list.isEmpty()) { list.poll().join(); }
292 bindings.PeerManager_process_events(peer2.peer_manager);
293 while (!list.isEmpty()) { list.poll().join(); }
294 bindings.PeerManager_process_events(peer1.peer_manager);
295 while (!list.isEmpty()) { list.poll().join(); }
297 long peer2_events = bindings.LDKEventsProvider_call_get_and_clear_pending_events(peer2.chan_manager_events);
298 bindings.VecOrSliceDef event_arr_info = bindings.LDKCVecTempl_Event_arr_info(peer2_events);
299 assert event_arr_info.datalen == 1;
300 bindings.LDKEvent forwardable = bindings.LDKEvent_ref_from_ptr(event_arr_info.dataptr);
301 assert forwardable instanceof bindings.LDKEvent.PendingHTLCsForwardable;
302 bindings.CVec_EventZ_free(peer2_events);
303 bindings.ChannelManager_process_pending_htlc_forwards(peer2.chan_manager);
305 peer2_events = bindings.LDKEventsProvider_call_get_and_clear_pending_events(peer2.chan_manager_events);
306 event_arr_info = bindings.LDKCVecTempl_Event_arr_info(peer2_events);
307 assert event_arr_info.datalen == 1;
308 bindings.LDKEvent payment_recvd = bindings.LDKEvent_ref_from_ptr(event_arr_info.dataptr);
309 assert payment_recvd instanceof bindings.LDKEvent.PaymentReceived;
310 assert bindings.ChannelManager_claim_funds(peer2.chan_manager, payment_preimage, new byte[32], ((bindings.LDKEvent.PaymentReceived)payment_recvd).amt);
311 bindings.CVec_EventZ_free(peer2_events);
313 bindings.PeerManager_process_events(peer2.peer_manager);
314 while (!list.isEmpty()) { list.poll().join(); }
315 bindings.PeerManager_process_events(peer1.peer_manager);
316 while (!list.isEmpty()) { list.poll().join(); }
318 long peer1_events = bindings.LDKEventsProvider_call_get_and_clear_pending_events(peer1.chan_manager_events);
319 event_arr_info = bindings.LDKCVecTempl_Event_arr_info(peer1_events);
320 assert event_arr_info.datalen == 1;
321 bindings.LDKEvent sent = bindings.LDKEvent_ref_from_ptr(event_arr_info.dataptr);
322 assert sent instanceof bindings.LDKEvent.PaymentSent;
323 assert Arrays.equals(((bindings.LDKEvent.PaymentSent)sent).payment_preimage, payment_preimage);
324 bindings.CVec_EventZ_free(peer1_events);
328 bindings.SocketDescriptor_free(descriptor2);
329 bindings.SocketDescriptor_free(descriptor1.val);