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.Arrays;
10 import java.util.HashMap;
11 import java.util.concurrent.ConcurrentLinkedQueue;
13 public class PeerTest {
16 final long fee_estimator;
17 final long tx_broadcaster;
18 final long chain_monitor;
20 final long keys_interface;
22 final long chan_manager;
23 final long chan_manager_events;
24 final long chan_handler;
26 final long route_handler;
27 final long message_handler;
28 final long peer_manager;
29 HashMap<String, Long> monitors; // Wow I forgot just how terrible Java is - we can't put a byte array here.
31 bindings.LDKFeeEstimator fee_est;
32 bindings.LDKBroadcasterInterface broad_trait;
33 bindings.LDKLogger log_trait;
34 bindings.LDKWatch watcher;
37 this.log_trait = (String arg)-> System.out.println(seed + ": " + arg);
38 logger = bindings.LDKLogger_new(this.log_trait);
39 this.fee_est = confirmation_target -> 0;
40 this.fee_estimator = bindings.LDKFeeEstimator_new(this.fee_est);
41 this.broad_trait = tx -> {
42 // We should broadcast
44 this.tx_broadcaster = bindings.LDKBroadcasterInterface_new(this.broad_trait);
45 this.monitors = new HashMap<>();
46 this.watcher = new bindings.LDKWatch() {
48 public long watch_channel(long funding_txo, long monitor) {
49 synchronized (monitors) {
50 assert monitors.put(Arrays.toString(bindings.OutPoint_get_txid(funding_txo)), monitor) == null;
52 bindings.OutPoint_free(funding_txo);
53 return bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
57 public long update_channel(long funding_txo, long update) {
58 synchronized (monitors) {
59 String txid = Arrays.toString(bindings.OutPoint_get_txid(funding_txo));
60 assert monitors.containsKey(txid);
61 long update_res = bindings.ChannelMonitor_update_monitor(monitors.get(txid), update, tx_broadcaster, logger);
62 assert bindings.LDKCResult_NoneMonitorUpdateErrorZ_result_ok(update_res);
63 bindings.CResult_NoneMonitorUpdateErrorZ_free(update_res);
65 bindings.OutPoint_free(funding_txo);
66 bindings.ChannelMonitorUpdate_free(update);
67 return bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
71 public long[] release_pending_monitor_events() {
72 synchronized (monitors) {
73 assert monitors.size() <= 1;
74 for (Long mon : monitors.values()) {
75 return bindings.ChannelMonitor_get_and_clear_pending_monitor_events(mon);
81 this.chain_monitor = bindings.LDKWatch_new(this.watcher);
83 byte[] key_seed = new byte[32];
84 for (byte i = 0; i < 32; i++) { key_seed[i] = (byte) (i ^ seed); }
85 this.keys = bindings.KeysManager_new(key_seed, LDKNetwork.LDKNetwork_Bitcoin, System.currentTimeMillis() / 1000, (int)(System.currentTimeMillis() * 1000) & 0xffffffff);
86 this.keys_interface = bindings.KeysManager_as_KeysInterface(keys);
87 this.config = bindings.UserConfig_default();
88 this.chan_manager = bindings.ChannelManager_new(LDKNetwork.LDKNetwork_Bitcoin, fee_estimator, chain_monitor, tx_broadcaster, logger, keys_interface, config, 1);
89 this.node_id = bindings.ChannelManager_get_our_node_id(chan_manager);
90 this.chan_manager_events = bindings.ChannelManager_as_EventsProvider(chan_manager);
92 this.chan_handler = bindings.ChannelManager_as_ChannelMessageHandler(chan_manager);
93 this.router = bindings.NetGraphMsgHandler_new(0, logger);
94 this.route_handler = bindings.NetGraphMsgHandler_as_RoutingMessageHandler(router);
95 this.message_handler = bindings.MessageHandler_new(chan_handler, route_handler);
97 byte[] random_data = new byte[32];
98 for (byte i = 0; i < 32; i++) { random_data[i] = (byte) ((i ^ seed) ^ 0xf0); }
99 this.peer_manager = bindings.PeerManager_new(message_handler, bindings.KeysInterface_get_node_secret(keys_interface), random_data, logger);
102 void connect_block(Block b, Transaction t, int height) {
103 byte[] header = Arrays.copyOfRange(b.bitcoinSerialize(), 0, 80);
107 txdata = bindings.new_txpointer_copy_data(t.bitcoinSerialize());
108 txn = new long[]{bindings.C2Tuple_usizeTransactionZ_new(1, txdata)};
111 bindings.ChannelManager_block_connected(chan_manager, header, txn, height);
112 if (txdata != 0) bindings.txpointer_free(txdata);
113 synchronized (monitors) {
114 for (Long mon : monitors.values()) {
116 txdata = bindings.new_txpointer_copy_data(t.bitcoinSerialize());
117 txn = new long[]{bindings.C2Tuple_usizeTransactionZ_new(1, txdata)};
120 long[] ret = bindings.ChannelMonitor_block_connected(mon, header, txn, height, tx_broadcaster, fee_estimator, logger);
121 if (txdata != 0) bindings.txpointer_free(txdata);
123 bindings.C2Tuple_TxidCVec_TxOutZZ_free(r);
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.NetGraphMsgHandler_free(router);
142 bindings.RoutingMessageHandler_free(route_handler);
143 //MessageHandler was actually moved into the route_handler!: bindings.MessageHandler_free(message_handler);
144 bindings.PeerManager_free(peer_manager);
145 synchronized (monitors) {
146 for (Long mon : monitors.values()) {
147 bindings.ChannelMonitor_free(mon);
153 class LongHolder { long val; }
155 void do_read_event(ConcurrentLinkedQueue<Thread> list, long pm, long descriptor, byte[] arr) {
156 Thread thread = new Thread(() -> {
157 long res = bindings.PeerManager_read_event(pm, descriptor, arr);
158 assert bindings.LDKCResult_boolPeerHandleErrorZ_result_ok(res);
159 //assert bindings.deref_bool(bindings.LDKCResult_boolPeerHandleErrorZ_get_inner(res));
160 bindings.CResult_boolPeerHandleErrorZ_free(res);
167 void test_message_handler() throws InterruptedException {
168 Peer peer1 = new Peer((byte) 1);
169 Peer peer2 = new Peer((byte) 2);
171 ConcurrentLinkedQueue<Thread> list = new ConcurrentLinkedQueue<Thread>();
172 LongHolder descriptor1 = new LongHolder();
173 LongHolder descriptor1ref = descriptor1;
174 bindings.LDKSocketDescriptor sock1 = new bindings.LDKSocketDescriptor() {
176 public long send_data(byte[] data, boolean resume_read) {
177 do_read_event(list, peer1.peer_manager, descriptor1ref.val, data);
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(byte[] data, boolean resume_read) {
190 do_read_event(list, peer2.peer_manager, descriptor2, data);
194 @Override public void disconnect_socket() { assert false; }
195 @Override public boolean eq(long other_arg) { return bindings.LDKSocketDescriptor_get_obj_from_jcalls(other_arg).hash() == 1; }
196 @Override public long hash() { return 1; }
198 descriptor1.val = bindings.LDKSocketDescriptor_new(sock2);
200 long init_vec = bindings.PeerManager_new_outbound_connection(peer1.peer_manager, peer2.node_id, descriptor1.val);
201 assert(bindings.LDKCResult_CVec_u8ZPeerHandleErrorZ_result_ok(init_vec));
203 long con_res = bindings.PeerManager_new_inbound_connection(peer2.peer_manager, descriptor2);
204 assert(bindings.LDKCResult_NonePeerHandleErrorZ_result_ok(con_res));
205 bindings.CResult_NonePeerHandleErrorZ_free(con_res);
206 do_read_event(list, peer2.peer_manager, descriptor2, bindings.LDKCResult_CVec_u8ZPeerHandleErrorZ_get_ok(init_vec));
207 bindings.CResult_CVec_u8ZPeerHandleErrorZ_free(init_vec);
209 while (!list.isEmpty()) { list.poll().join(); }
211 long cc_res = bindings.ChannelManager_create_channel(peer1.chan_manager, peer2.node_id, 10000, 1000, 42, 0);
212 assert bindings.LDKCResult_NoneAPIErrorZ_result_ok(cc_res);
213 bindings.CResult_NoneAPIErrorZ_free(cc_res);
215 bindings.PeerManager_process_events(peer1.peer_manager);
216 while (!list.isEmpty()) { list.poll().join(); }
217 bindings.PeerManager_process_events(peer2.peer_manager);
218 while (!list.isEmpty()) { list.poll().join(); }
220 long events[] = bindings.EventsProvider_get_and_clear_pending_events(peer1.chan_manager_events);
221 assert events.length == 1;
222 bindings.LDKEvent event = bindings.LDKEvent_ref_from_ptr(events[0]);
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.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 long funding_txo = bindings.OutPoint_new(funding.getTxId().getReversedBytes(), (short) 0);
237 bindings.ChannelManager_funding_transaction_generated(peer1.chan_manager, chan_id, funding_txo);
238 bindings.OutPoint_free(funding_txo);
240 bindings.PeerManager_process_events(peer1.peer_manager);
241 while (!list.isEmpty()) { list.poll().join(); }
242 bindings.PeerManager_process_events(peer2.peer_manager);
243 while (!list.isEmpty()) { list.poll().join(); }
245 events = bindings.EventsProvider_get_and_clear_pending_events(peer1.chan_manager_events);
246 assert events.length == 1;
247 event = bindings.LDKEvent_ref_from_ptr(events[0]);
248 assert event instanceof bindings.LDKEvent.FundingBroadcastSafe;
249 bindings.CVec_EventZ_free(events);
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);
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[]{funding}));
257 peer1.connect_block(b, null, height);
258 peer2.connect_block(b, null, height);
261 bindings.PeerManager_process_events(peer1.peer_manager);
262 bindings.PeerManager_process_events(peer2.peer_manager);
263 while (!list.isEmpty()) { list.poll().join(); }
265 long[] peer1_chans = bindings.ChannelManager_list_channels(peer1.chan_manager);
266 long[] peer2_chans = bindings.ChannelManager_list_channels(peer2.chan_manager);
267 assert peer1_chans.length == 1;
268 assert peer2_chans.length == 1;
269 assert bindings.ChannelDetails_get_channel_value_satoshis(peer1_chans[0]) == 10000;
270 assert bindings.ChannelDetails_get_is_live(peer1_chans[0]);
271 assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer1_chans[0]), funding.getTxId().getReversedBytes());
272 assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer2_chans[0]), funding.getTxId().getReversedBytes());
273 for (long chan : peer2_chans) bindings.ChannelDetails_free(chan);
275 byte[] payment_preimage = new byte[32];
276 for (int i = 0; i < 32; i++) payment_preimage[i] = (byte) (i ^ 0x0f);
277 byte[] payment_hash = Sha256Hash.hash(payment_preimage);
278 long netgraph = bindings.NetGraphMsgHandler_read_locked_graph(peer1.router);
279 long route = bindings.get_route(peer1.node_id, bindings.LockedNetworkGraph_graph(netgraph), peer2.node_id, peer1_chans,
280 new long[0], 1000, 42, peer1.logger);
281 for (long chan : peer1_chans) bindings.ChannelDetails_free(chan);
282 assert bindings.LDKCResult_RouteLightningErrorZ_result_ok(route);
283 bindings.LockedNetworkGraph_free(netgraph);
284 long payment_res = bindings.ChannelManager_send_payment(peer1.chan_manager, bindings.LDKCResult_RouteLightningErrorZ_get_ok(route), payment_hash, new byte[32]);
285 bindings.CResult_RouteLightningErrorZ_free(route);
286 assert bindings.LDKCResult_NonePaymentSendFailureZ_result_ok(payment_res);
287 bindings.CResult_NonePaymentSendFailureZ_free(payment_res);
289 bindings.PeerManager_process_events(peer1.peer_manager);
290 while (!list.isEmpty()) { list.poll().join(); }
291 bindings.PeerManager_process_events(peer2.peer_manager);
292 while (!list.isEmpty()) { list.poll().join(); }
293 bindings.PeerManager_process_events(peer1.peer_manager);
294 while (!list.isEmpty()) { list.poll().join(); }
296 long[] peer2_events = bindings.EventsProvider_get_and_clear_pending_events(peer2.chan_manager_events);
297 assert peer2_events.length == 1;
298 bindings.LDKEvent forwardable = bindings.LDKEvent_ref_from_ptr(peer2_events[0]);
299 assert forwardable instanceof bindings.LDKEvent.PendingHTLCsForwardable;
300 bindings.CVec_EventZ_free(peer2_events);
301 bindings.ChannelManager_process_pending_htlc_forwards(peer2.chan_manager);
303 peer2_events = bindings.EventsProvider_get_and_clear_pending_events(peer2.chan_manager_events);
304 assert peer2_events.length == 1;
305 bindings.LDKEvent payment_recvd = bindings.LDKEvent_ref_from_ptr(peer2_events[0]);
306 assert payment_recvd instanceof bindings.LDKEvent.PaymentReceived;
307 assert bindings.ChannelManager_claim_funds(peer2.chan_manager, payment_preimage, new byte[32], ((bindings.LDKEvent.PaymentReceived)payment_recvd).amt);
308 bindings.CVec_EventZ_free(peer2_events);
310 bindings.PeerManager_process_events(peer2.peer_manager);
311 while (!list.isEmpty()) { list.poll().join(); }
312 bindings.PeerManager_process_events(peer1.peer_manager);
313 while (!list.isEmpty()) { list.poll().join(); }
315 long[] peer1_events = bindings.EventsProvider_get_and_clear_pending_events(peer1.chan_manager_events);
316 assert peer1_events.length == 1;
317 bindings.LDKEvent sent = bindings.LDKEvent_ref_from_ptr(peer1_events[0]);
318 assert sent instanceof bindings.LDKEvent.PaymentSent;
319 assert Arrays.equals(((bindings.LDKEvent.PaymentSent)sent).payment_preimage, payment_preimage);
320 bindings.CVec_EventZ_free(peer1_events);
324 bindings.SocketDescriptor_free(descriptor2);
325 bindings.SocketDescriptor_free(descriptor1.val);