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.*;
8 import org.ldk.structs.Result_NoneChannelMonitorUpdateErrZ;
10 import java.util.ArrayList;
11 import java.util.Arrays;
12 import java.util.HashMap;
13 import java.util.concurrent.ConcurrentLinkedQueue;
15 public class PeerTest {
18 final long fee_estimator;
19 final long tx_broadcaster;
20 final long chain_monitor;
22 final long keys_interface;
24 final long chan_manager;
25 final long chan_manager_events;
26 final long chan_handler;
28 final long route_handler;
29 final long message_handler;
30 final long peer_manager;
31 HashMap<String, Long> monitors; // Wow I forgot just how terrible Java is - we can't put a byte array here.
33 bindings.LDKFeeEstimator fee_est;
34 bindings.LDKBroadcasterInterface broad_trait;
35 bindings.LDKLogger log_trait;
36 bindings.LDKWatch watcher;
37 ArrayList<Long> results_to_free;
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.results_to_free = new ArrayList<>();
48 this.tx_broadcaster = bindings.LDKBroadcasterInterface_new(this.broad_trait);
49 this.monitors = new HashMap<>();
50 this.watcher = new bindings.LDKWatch() {
52 public long watch_channel(long funding_txo, long monitor) {
53 synchronized (monitors) {
54 assert monitors.put(Arrays.toString(bindings.OutPoint_get_txid(funding_txo)), monitor) == null;
56 bindings.OutPoint_free(funding_txo);
57 long res = bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
58 results_to_free.add(res);
63 public long update_channel(long funding_txo, long update) {
64 synchronized (monitors) {
65 String txid = Arrays.toString(bindings.OutPoint_get_txid(funding_txo));
66 assert monitors.containsKey(txid);
67 long update_res = bindings.ChannelMonitor_update_monitor(monitors.get(txid), update, tx_broadcaster, fee_estimator, logger);
68 assert bindings.LDKCResult_NoneMonitorUpdateErrorZ_result_ok(update_res);
69 bindings.CResult_NoneMonitorUpdateErrorZ_free(update_res);
71 bindings.OutPoint_free(funding_txo);
72 bindings.ChannelMonitorUpdate_free(update);
73 long res = bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
74 results_to_free.add(res);
79 public long[] release_pending_monitor_events() {
80 synchronized (monitors) {
81 assert monitors.size() <= 1;
82 for (Long mon : monitors.values()) {
83 return bindings.ChannelMonitor_get_and_clear_pending_monitor_events(mon);
89 this.chain_monitor = bindings.LDKWatch_new(this.watcher);
91 byte[] key_seed = new byte[32];
92 for (byte i = 0; i < 32; i++) { key_seed[i] = (byte) (i ^ seed); }
93 this.keys = bindings.KeysManager_new(key_seed, System.currentTimeMillis() / 1000, (int)(System.currentTimeMillis() * 1000) & 0xffffffff);
94 this.keys_interface = bindings.KeysManager_as_KeysInterface(keys);
95 this.config = bindings.UserConfig_default();
96 long params = bindings.ChainParameters_new(LDKNetwork.LDKNetwork_Bitcoin, new byte[32], 0);
97 this.chan_manager = bindings.ChannelManager_new(fee_estimator, chain_monitor, tx_broadcaster, logger, keys_interface, config, params);
98 this.node_id = bindings.ChannelManager_get_our_node_id(chan_manager);
99 this.chan_manager_events = bindings.ChannelManager_as_EventsProvider(chan_manager);
101 this.chan_handler = bindings.ChannelManager_as_ChannelMessageHandler(chan_manager);
102 this.router = bindings.NetGraphMsgHandler_new(new byte[32], 0, logger);
103 this.route_handler = bindings.NetGraphMsgHandler_as_RoutingMessageHandler(router);
104 this.message_handler = bindings.MessageHandler_new(chan_handler, route_handler);
106 byte[] random_data = new byte[32];
107 for (byte i = 0; i < 32; i++) { random_data[i] = (byte) ((i ^ seed) ^ 0xf0); }
108 this.peer_manager = bindings.PeerManager_new(message_handler, bindings.KeysInterface_get_node_secret(keys_interface), random_data, logger);
111 void connect_block(Block b, Transaction t, int height) {
112 long listen = bindings.ChannelManager_as_Listen(chan_manager);
113 bindings.Listen_block_connected(listen, b.bitcoinSerialize(), height);
114 bindings.Listen_free(listen);
115 synchronized (monitors) {
116 for (Long mon : monitors.values()) {
119 txn = new long[]{bindings.C2Tuple_usizeTransactionZ_new(1, t.bitcoinSerialize())};
122 byte[] header = Arrays.copyOfRange(b.bitcoinSerialize(), 0, 80);
123 long[] ret = bindings.ChannelMonitor_block_connected(mon, header, txn, height, tx_broadcaster, fee_estimator, logger);
125 bindings.C2Tuple_TxidCVec_C2Tuple_u32TxOutZZZ_free(r);
132 // Note that we can't rely on finalizer order, so don't bother trying to rely on it here
133 bindings.Logger_free(logger);
134 bindings.FeeEstimator_free(fee_estimator);
135 bindings.BroadcasterInterface_free(tx_broadcaster);
136 bindings.Watch_free(chain_monitor);
137 bindings.KeysManager_free(keys);
138 bindings.KeysInterface_free(keys_interface);
139 bindings.UserConfig_free(config);
140 bindings.ChannelManager_free(chan_manager);
141 bindings.EventsProvider_free(chan_manager_events);
142 bindings.ChannelMessageHandler_free(chan_handler);
143 bindings.NetGraphMsgHandler_free(router);
144 bindings.RoutingMessageHandler_free(route_handler);
145 //MessageHandler was actually moved into the route_handler!: bindings.MessageHandler_free(message_handler);
146 bindings.PeerManager_free(peer_manager);
147 synchronized (monitors) {
148 for (Long mon : monitors.values()) {
149 bindings.ChannelMonitor_free(mon);
152 for (Long res : results_to_free) {
153 bindings.CResult_NoneChannelMonitorUpdateErrZ_free(res);
158 class LongHolder { long val; }
160 void do_read_event(ConcurrentLinkedQueue<Thread> list, long pm, long descriptor, byte[] arr) {
161 Thread thread = new Thread(() -> {
162 long res = bindings.PeerManager_read_event(pm, descriptor, arr);
163 assert bindings.LDKCResult_boolPeerHandleErrorZ_result_ok(res);
164 //assert bindings.deref_bool(bindings.LDKCResult_boolPeerHandleErrorZ_get_inner(res));
165 bindings.CResult_boolPeerHandleErrorZ_free(res);
172 void test_message_handler() throws InterruptedException {
173 Peer peer1 = new Peer((byte) 1);
174 Peer peer2 = new Peer((byte) 2);
176 ConcurrentLinkedQueue<Thread> list = new ConcurrentLinkedQueue<Thread>();
177 LongHolder descriptor1 = new LongHolder();
178 LongHolder descriptor1ref = descriptor1;
179 bindings.LDKSocketDescriptor sock1 = new bindings.LDKSocketDescriptor() {
181 public long send_data(byte[] data, boolean resume_read) {
182 do_read_event(list, peer1.peer_manager, descriptor1ref.val, data);
186 @Override public void disconnect_socket() { assert false; }
187 @Override public boolean eq(long other_arg) { boolean ret = bindings.SocketDescriptor_hash(other_arg) == 2; bindings.SocketDescriptor_free(other_arg); return ret; }
188 @Override public long hash() { return 2; }
190 long descriptor2 = bindings.LDKSocketDescriptor_new(sock1);
192 bindings.LDKSocketDescriptor sock2 = new bindings.LDKSocketDescriptor() {
194 public long send_data(byte[] data, boolean resume_read) {
195 do_read_event(list, peer2.peer_manager, descriptor2, data);
199 @Override public void disconnect_socket() { assert false; }
200 @Override public boolean eq(long other_arg) { boolean ret = bindings.SocketDescriptor_hash(other_arg) == 1; bindings.SocketDescriptor_free(other_arg); return ret; }
201 @Override public long hash() { return 1; }
203 descriptor1.val = bindings.LDKSocketDescriptor_new(sock2);
205 long init_vec = bindings.PeerManager_new_outbound_connection(peer1.peer_manager, peer2.node_id, descriptor1.val);
206 assert(bindings.LDKCResult_CVec_u8ZPeerHandleErrorZ_result_ok(init_vec));
208 long con_res = bindings.PeerManager_new_inbound_connection(peer2.peer_manager, descriptor2);
209 assert(bindings.LDKCResult_NonePeerHandleErrorZ_result_ok(con_res));
210 bindings.CResult_NonePeerHandleErrorZ_free(con_res);
211 do_read_event(list, peer2.peer_manager, descriptor2, bindings.LDKCResult_CVec_u8ZPeerHandleErrorZ_get_ok(init_vec));
212 bindings.CResult_CVec_u8ZPeerHandleErrorZ_free(init_vec);
214 while (!list.isEmpty()) { list.poll().join(); }
216 long cc_res = bindings.ChannelManager_create_channel(peer1.chan_manager, peer2.node_id, 10000, 1000, 42, 0);
217 assert bindings.LDKCResult_NoneAPIErrorZ_result_ok(cc_res);
218 bindings.CResult_NoneAPIErrorZ_free(cc_res);
220 bindings.PeerManager_process_events(peer1.peer_manager);
221 while (!list.isEmpty()) { list.poll().join(); }
222 bindings.PeerManager_process_events(peer2.peer_manager);
223 while (!list.isEmpty()) { list.poll().join(); }
225 long events[] = bindings.EventsProvider_get_and_clear_pending_events(peer1.chan_manager_events);
226 assert events.length == 1;
227 bindings.LDKEvent event = bindings.LDKEvent_ref_from_ptr(events[0]);
228 assert event instanceof bindings.LDKEvent.FundingGenerationReady;
229 assert ((bindings.LDKEvent.FundingGenerationReady)event).channel_value_satoshis == 10000;
230 assert ((bindings.LDKEvent.FundingGenerationReady)event).user_channel_id == 42;
231 byte[] funding_spk = ((bindings.LDKEvent.FundingGenerationReady)event).output_script;
232 assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
233 byte[] chan_id = ((bindings.LDKEvent.FundingGenerationReady)event).temporary_channel_id;
234 bindings.CVec_EventZ_free(events);
236 Transaction funding = new Transaction(NetworkParameters.fromID(NetworkParameters.ID_MAINNET));
237 funding.addInput(new TransactionInput(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), funding, new byte[0]));
238 funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
239 funding.getInput(0).getWitness().setPush(0, new byte[] {0x1});
240 funding.addOutput(Coin.SATOSHI.multiply(10000), new Script(funding_spk));
241 bindings.ChannelManager_funding_transaction_generated(peer1.chan_manager, chan_id, funding.bitcoinSerialize(), (short)0);
243 bindings.PeerManager_process_events(peer1.peer_manager);
244 while (!list.isEmpty()) { list.poll().join(); }
245 bindings.PeerManager_process_events(peer2.peer_manager);
246 while (!list.isEmpty()) { list.poll().join(); }
248 Block b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
249 peer1.connect_block(b, funding, 1);
250 peer2.connect_block(b, funding, 1);
252 for (int height = 2; height < 10; height++) {
253 b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[0]));
254 peer1.connect_block(b, null, height);
255 peer2.connect_block(b, null, height);
258 bindings.PeerManager_process_events(peer1.peer_manager);
259 bindings.PeerManager_process_events(peer2.peer_manager);
260 while (!list.isEmpty()) { list.poll().join(); }
262 long[] peer1_chans = bindings.ChannelManager_list_channels(peer1.chan_manager);
263 long[] peer2_chans = bindings.ChannelManager_list_channels(peer2.chan_manager);
264 assert peer1_chans.length == 1;
265 assert peer2_chans.length == 1;
266 assert bindings.ChannelDetails_get_channel_value_satoshis(peer1_chans[0]) == 10000;
267 assert bindings.ChannelDetails_get_is_live(peer1_chans[0]);
268 assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer1_chans[0]), funding.getTxId().getReversedBytes());
269 assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer2_chans[0]), funding.getTxId().getReversedBytes());
270 for (long chan : peer2_chans) bindings.ChannelDetails_free(chan);
272 byte[] payment_preimage = new byte[32];
273 for (int i = 0; i < 32; i++) payment_preimage[i] = (byte) (i ^ 0x0f);
274 byte[] payment_hash = Sha256Hash.hash(payment_preimage);
275 long netgraph = bindings.NetGraphMsgHandler_read_locked_graph(peer1.router);
276 long route = bindings.get_route(peer1.node_id, bindings.LockedNetworkGraph_graph(netgraph), peer2.node_id, 0L, peer1_chans,
277 new long[0], 1000, 42, peer1.logger);
278 for (long chan : peer1_chans) bindings.ChannelDetails_free(chan);
279 assert bindings.LDKCResult_RouteLightningErrorZ_result_ok(route);
280 bindings.LockedNetworkGraph_free(netgraph);
281 long payment_res = bindings.ChannelManager_send_payment(peer1.chan_manager, bindings.LDKCResult_RouteLightningErrorZ_get_ok(route), payment_hash, new byte[32]);
282 bindings.CResult_RouteLightningErrorZ_free(route);
283 assert bindings.LDKCResult_NonePaymentSendFailureZ_result_ok(payment_res);
284 bindings.CResult_NonePaymentSendFailureZ_free(payment_res);
286 bindings.PeerManager_process_events(peer1.peer_manager);
287 while (!list.isEmpty()) { list.poll().join(); }
288 bindings.PeerManager_process_events(peer2.peer_manager);
289 while (!list.isEmpty()) { list.poll().join(); }
290 bindings.PeerManager_process_events(peer1.peer_manager);
291 while (!list.isEmpty()) { list.poll().join(); }
293 long[] peer2_events = bindings.EventsProvider_get_and_clear_pending_events(peer2.chan_manager_events);
294 assert peer2_events.length == 1;
295 bindings.LDKEvent forwardable = bindings.LDKEvent_ref_from_ptr(peer2_events[0]);
296 assert forwardable instanceof bindings.LDKEvent.PendingHTLCsForwardable;
297 bindings.CVec_EventZ_free(peer2_events);
298 bindings.ChannelManager_process_pending_htlc_forwards(peer2.chan_manager);
300 peer2_events = bindings.EventsProvider_get_and_clear_pending_events(peer2.chan_manager_events);
301 assert peer2_events.length == 1;
302 bindings.LDKEvent payment_recvd = bindings.LDKEvent_ref_from_ptr(peer2_events[0]);
303 assert payment_recvd instanceof bindings.LDKEvent.PaymentReceived;
304 assert bindings.ChannelManager_claim_funds(peer2.chan_manager, payment_preimage, new byte[32], ((bindings.LDKEvent.PaymentReceived)payment_recvd).amt);
305 bindings.CVec_EventZ_free(peer2_events);
307 bindings.PeerManager_process_events(peer2.peer_manager);
308 while (!list.isEmpty()) { list.poll().join(); }
309 bindings.PeerManager_process_events(peer1.peer_manager);
310 while (!list.isEmpty()) { list.poll().join(); }
312 long[] peer1_events = bindings.EventsProvider_get_and_clear_pending_events(peer1.chan_manager_events);
313 assert peer1_events.length == 1;
314 bindings.LDKEvent sent = bindings.LDKEvent_ref_from_ptr(peer1_events[0]);
315 assert sent instanceof bindings.LDKEvent.PaymentSent;
316 assert Arrays.equals(((bindings.LDKEvent.PaymentSent)sent).payment_preimage, payment_preimage);
317 bindings.CVec_EventZ_free(peer1_events);
321 bindings.SocketDescriptor_free(descriptor2);
322 bindings.SocketDescriptor_free(descriptor1.val);