3 import org.bitcoinj.core.*;
4 import org.bitcoinj.core.Transaction;
5 import org.bitcoinj.script.Script;
6 import org.junit.jupiter.api.Test;
7 import org.ldk.enums.LDKNetwork;
8 import org.ldk.impl.bindings;
9 import org.ldk.structs.*;
11 import java.lang.ref.WeakReference;
12 import java.util.Arrays;
13 import java.util.HashMap;
14 import java.util.concurrent.ConcurrentLinkedQueue;
16 public class HumanObjectPeerTest {
19 final long fee_estimator;
20 final long tx_broadcaster;
21 final KeysManager keys;
22 final KeysInterface keys_interface;
23 final ChannelManager chan_manager;
24 final EventsProvider chan_manager_events;
25 final NetGraphMsgHandler router;
26 final PeerManager peer_manager;
27 HashMap<String, Long> monitors; // Wow I forgot just how terrible Java is - we can't put a byte array here.
31 bindings.LDKLogger log_trait = (String arg) -> System.out.println(seed + ": " + arg);
32 logger = bindings.LDKLogger_new(log_trait);
33 this.fee_estimator = bindings.LDKFeeEstimator_new(confirmation_target -> 0);
34 this.tx_broadcaster = bindings.LDKBroadcasterInterface_new(tx -> {
35 // We should broadcast
37 this.monitors = new HashMap<>();
38 Watch chain_monitor = new Watch(new bindings.LDKWatch() {
40 public long watch_channel(long funding_txo, long monitor) {
41 synchronized (monitors) {
42 assert monitors.put(Arrays.toString(bindings.OutPoint_get_txid(funding_txo)), monitor) == null;
44 bindings.OutPoint_free(funding_txo);
45 return bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
49 public long update_channel(long funding_txo, long update) {
50 synchronized (monitors) {
51 String txid = Arrays.toString(bindings.OutPoint_get_txid(funding_txo));
52 assert monitors.containsKey(txid);
53 long update_res = bindings.ChannelMonitor_update_monitor(monitors.get(txid), update, tx_broadcaster, logger);
54 assert bindings.LDKCResult_NoneMonitorUpdateErrorZ_result_ok(update_res);
55 bindings.CResult_NoneMonitorUpdateErrorZ_free(update_res);
57 bindings.OutPoint_free(funding_txo);
58 bindings.ChannelMonitorUpdate_free(update);
59 return bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
63 public long[] release_pending_monitor_events() {
64 synchronized (monitors) {
65 assert monitors.size() <= 1;
66 for (Long mon : monitors.values()) {
67 return bindings.ChannelMonitor_get_and_clear_pending_monitor_events(mon);
74 byte[] key_seed = new byte[32];
75 for (byte i = 0; i < 32; i++) {
76 key_seed[i] = (byte) (i ^ seed);
78 this.keys = KeysManager.constructor_new(key_seed, LDKNetwork.LDKNetwork_Bitcoin, System.currentTimeMillis() / 1000, (int) (System.currentTimeMillis() * 1000) & 0xffffffff);
79 this.keys_interface = keys.as_KeysInterface();
80 this.chan_manager = ChannelManager.constructor_new(LDKNetwork.LDKNetwork_Bitcoin, new FeeEstimator(confirmation_target -> 0), chain_monitor,
81 new BroadcasterInterface(tx -> {
82 }), new Logger(log_trait), keys.as_KeysInterface(), UserConfig.constructor_default(), 1);
83 this.node_id = chan_manager.get_our_node_id();
84 this.chan_manager_events = chan_manager.as_EventsProvider();
85 this.router = NetGraphMsgHandler.constructor_new(null, new Logger(log_trait));
87 byte[] random_data = new byte[32];
88 for (byte i = 0; i < 32; i++) {
89 random_data[i] = (byte) ((i ^ seed) ^ 0xf0);
91 this.peer_manager = PeerManager.constructor_new(chan_manager.as_ChannelMessageHandler(), router.as_RoutingMessageHandler(), keys_interface.get_node_secret(), random_data, new Logger(log_trait));
95 void connect_block(Block b, Transaction t, int height) {
96 byte[] header = Arrays.copyOfRange(b.bitcoinSerialize(), 0, 80);
99 txn = new long[]{bindings.C2Tuple_usizeTransactionZ_new(1, bindings.new_txpointer_copy_data(t.bitcoinSerialize()))};
102 bindings.ChannelManager_block_connected(chan_manager._test_only_get_ptr(), header, txn, height);
103 synchronized (monitors) {
104 for (Long mon : monitors.values()) {
106 txn = new long[]{bindings.C2Tuple_usizeTransactionZ_new(1, bindings.new_txpointer_copy_data(t.bitcoinSerialize()))};
109 long[] ret = bindings.ChannelMonitor_block_connected(mon, header, txn, height, tx_broadcaster, fee_estimator, logger);
110 for (long r : ret) bindings.C2Tuple_TxidCVec_TxOutZZ_free(r);
116 // Note that we can't rely on finalizer order, so don't bother trying to rely on it here
117 bindings.Logger_free(logger);
118 bindings.FeeEstimator_free(fee_estimator);
119 bindings.BroadcasterInterface_free(tx_broadcaster);
120 synchronized (monitors) {
121 for (Long mon : monitors.values()) {
122 bindings.ChannelMonitor_free(mon);
127 long get_route(byte[] dest_node, ChannelDetails[] our_chans) {
128 try (LockedNetworkGraph netgraph = this.router.read_locked_graph()) {
129 NetworkGraph graph = netgraph.graph();
130 return bindings.get_route(this.node_id, graph._test_only_get_ptr(), dest_node, new long[] {our_chans[0]._test_only_get_ptr()},
131 new long[0], 1000, 42, this.logger);
136 class LongHolder { long val; }
138 java.util.LinkedList<WeakReference<Object>> must_free_objs = new java.util.LinkedList();
139 void do_read_event(ConcurrentLinkedQueue<Thread> list, PeerManager pm, long descriptor, byte[] data) {
140 Thread thread = new Thread(() -> {
141 long res = bindings.PeerManager_read_event(pm._test_only_get_ptr(), descriptor, data);
142 assert bindings.LDKCResult_boolPeerHandleErrorZ_result_ok(res);
143 //assert bindings.deref_bool(bindings.LDKCResult_boolPeerHandleErrorZ_get_inner(res));
144 bindings.CResult_boolPeerHandleErrorZ_free(res);
148 must_free_objs.add(new WeakReference<>(data));
151 boolean gc_ran = false;
154 protected void finalize() throws Throwable {
159 void do_test_message_handler() throws InterruptedException {
160 GcCheck obj = new GcCheck();
161 Peer peer1 = new Peer((byte) 1);
162 Peer peer2 = new Peer((byte) 2);
164 ConcurrentLinkedQueue<Thread> list = new ConcurrentLinkedQueue<Thread>();
165 LongHolder descriptor1 = new LongHolder();
166 LongHolder descriptor1ref = descriptor1;
167 bindings.LDKSocketDescriptor sock1 = new bindings.LDKSocketDescriptor() {
169 public long send_data(byte[] data, boolean resume_read) {
170 do_read_event(list, peer1.peer_manager, descriptor1ref.val, data);
174 @Override public void disconnect_socket() { assert false; }
175 @Override public boolean eq(long other_arg) { return bindings.LDKSocketDescriptor_get_obj_from_jcalls(other_arg).hash() == 2; }
176 @Override public long hash() { return 2; }
178 long descriptor2 = bindings.LDKSocketDescriptor_new(sock1);
180 bindings.LDKSocketDescriptor sock2 = new bindings.LDKSocketDescriptor() {
182 public long send_data(byte[] data, boolean resume_read) {
183 do_read_event(list, peer2.peer_manager, descriptor2, data);
187 @Override public void disconnect_socket() { assert false; }
188 @Override public boolean eq(long other_arg) { return bindings.LDKSocketDescriptor_get_obj_from_jcalls(other_arg).hash() == 1; }
189 @Override public long hash() { return 1; }
191 descriptor1.val = bindings.LDKSocketDescriptor_new(sock2);
193 long init_vec = bindings.PeerManager_new_outbound_connection(peer1.peer_manager._test_only_get_ptr(), peer2.node_id, descriptor1.val);
194 assert (bindings.LDKCResult_CVec_u8ZPeerHandleErrorZ_result_ok(init_vec));
196 long con_res = bindings.PeerManager_new_inbound_connection(peer2.peer_manager._test_only_get_ptr(), descriptor2);
197 assert (bindings.LDKCResult_NonePeerHandleErrorZ_result_ok(con_res));
198 bindings.CResult_NonePeerHandleErrorZ_free(con_res);
199 do_read_event(list, peer2.peer_manager, descriptor2, bindings.LDKCResult_CVec_u8ZPeerHandleErrorZ_get_ok(init_vec));
200 bindings.CResult_CVec_u8ZPeerHandleErrorZ_free(init_vec);
202 while (!list.isEmpty()) { list.poll().join(); }
204 long cc_res = bindings.ChannelManager_create_channel(peer1.chan_manager._test_only_get_ptr(), peer2.node_id, 10000, 1000, 42, 0);
205 assert bindings.LDKCResult_NoneAPIErrorZ_result_ok(cc_res);
206 bindings.CResult_NoneAPIErrorZ_free(cc_res);
208 peer1.peer_manager.process_events();
209 while (!list.isEmpty()) { list.poll().join(); }
210 peer2.peer_manager.process_events();
211 while (!list.isEmpty()) { list.poll().join(); }
213 Event[] events = peer1.chan_manager_events.get_and_clear_pending_events();
214 assert events.length == 1;
215 assert events[0] instanceof Event.FundingGenerationReady;
216 assert ((Event.FundingGenerationReady)events[0]).channel_value_satoshis == 10000;
217 assert ((Event.FundingGenerationReady)events[0]).user_channel_id == 42;
218 byte[] funding_spk = ((Event.FundingGenerationReady)events[0]).output_script;
219 assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
220 byte[] chan_id = ((Event.FundingGenerationReady)events[0]).temporary_channel_id;
222 Transaction funding = new Transaction(NetworkParameters.fromID(NetworkParameters.ID_MAINNET));
223 funding.addInput(new TransactionInput(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), funding, new byte[0]));
224 funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
225 funding.getInput(0).getWitness().setPush(0, new byte[]{0x1});
226 funding.addOutput(Coin.SATOSHI.multiply(10000), new Script(funding_spk));
227 peer1.chan_manager.funding_transaction_generated(chan_id, OutPoint.constructor_new(funding.getTxId().getReversedBytes(), (short) 0));
229 peer1.peer_manager.process_events();
230 while (!list.isEmpty()) { list.poll().join(); }
231 peer2.peer_manager.process_events();
232 while (!list.isEmpty()) { list.poll().join(); }
234 events = peer1.chan_manager_events.get_and_clear_pending_events();
235 assert events.length == 1;
236 assert events[0] instanceof Event.FundingBroadcastSafe;
237 assert ((Event.FundingBroadcastSafe)events[0]).user_channel_id == 42;
239 Block b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
240 peer1.connect_block(b, funding, 1);
241 peer2.connect_block(b, funding, 1);
243 for (int height = 2; height < 10; height++) {
244 b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
245 peer1.connect_block(b, null, height);
246 peer2.connect_block(b, null, height);
249 peer1.peer_manager.process_events();
250 peer2.peer_manager.process_events();
251 while (!list.isEmpty()) { list.poll().join(); }
253 peer1.chan_manager.list_channels();
254 ChannelDetails[] peer1_chans = peer1.chan_manager.list_channels();
255 ChannelDetails[] peer2_chans = peer2.chan_manager.list_channels();
256 assert peer1_chans.length == 1;
257 assert peer2_chans.length == 1;
258 assert peer1_chans[0].get_channel_value_satoshis() == 10000;
259 assert peer1_chans[0].get_is_live();
260 assert Arrays.equals(peer1_chans[0].get_channel_id(), funding.getTxId().getReversedBytes());
261 assert Arrays.equals(peer2_chans[0].get_channel_id(), funding.getTxId().getReversedBytes());
263 byte[] payment_preimage = new byte[32];
264 for (int i = 0; i < 32; i++) payment_preimage[i] = (byte) (i ^ 0x0f);
265 byte[] payment_hash = Sha256Hash.hash(payment_preimage);
266 long route = peer1.get_route(peer2.node_id, peer1_chans);
267 assert bindings.LDKCResult_RouteLightningErrorZ_result_ok(route);
268 long payment_res = bindings.ChannelManager_send_payment(peer1.chan_manager._test_only_get_ptr(), bindings.LDKCResult_RouteLightningErrorZ_get_ok(route), payment_hash, new byte[32]);
269 bindings.CResult_RouteLightningErrorZ_free(route);
270 assert bindings.LDKCResult_NonePaymentSendFailureZ_result_ok(payment_res);
271 bindings.CResult_NonePaymentSendFailureZ_free(payment_res);
273 peer1.peer_manager.process_events();
274 while (!list.isEmpty()) { list.poll().join(); }
275 peer2.peer_manager.process_events();
276 while (!list.isEmpty()) { list.poll().join(); }
277 peer1.peer_manager.process_events();
278 while (!list.isEmpty()) { list.poll().join(); }
280 long[] peer2_events = bindings.EventsProvider_get_and_clear_pending_events(peer2.chan_manager_events._test_only_get_ptr());
281 assert peer2_events.length == 1;
282 bindings.LDKEvent forwardable = bindings.LDKEvent_ref_from_ptr(peer2_events[0]);
283 assert forwardable instanceof bindings.LDKEvent.PendingHTLCsForwardable;
284 bindings.CVec_EventZ_free(peer2_events);
285 bindings.ChannelManager_process_pending_htlc_forwards(peer2.chan_manager._test_only_get_ptr());
287 peer2_events = bindings.EventsProvider_get_and_clear_pending_events(peer2.chan_manager_events._test_only_get_ptr());
288 assert peer2_events.length == 1;
289 bindings.LDKEvent payment_recvd = bindings.LDKEvent_ref_from_ptr(peer2_events[0]);
290 assert payment_recvd instanceof bindings.LDKEvent.PaymentReceived;
291 peer2.chan_manager.claim_funds(payment_preimage, new byte[32], ((bindings.LDKEvent.PaymentReceived) payment_recvd).amt);
292 bindings.CVec_EventZ_free(peer2_events);
294 peer2.peer_manager.process_events();
295 while (!list.isEmpty()) { list.poll().join(); }
296 peer1.peer_manager.process_events();
297 while (!list.isEmpty()) { list.poll().join(); }
299 long[] peer1_events = bindings.EventsProvider_get_and_clear_pending_events(peer1.chan_manager_events._test_only_get_ptr());
300 assert peer1_events.length == 1;
301 bindings.LDKEvent sent = bindings.LDKEvent_ref_from_ptr(peer1_events[0]);
302 assert sent instanceof bindings.LDKEvent.PaymentSent;
303 assert Arrays.equals(((bindings.LDKEvent.PaymentSent) sent).payment_preimage, payment_preimage);
304 bindings.CVec_EventZ_free(peer1_events);
308 bindings.SocketDescriptor_free(descriptor2);
309 bindings.SocketDescriptor_free(descriptor1.val);
313 public void test_message_handler() throws InterruptedException {
314 do_test_message_handler();
317 System.runFinalization();
319 for (WeakReference<Object> o : must_free_objs)
320 assert o.get() == null;