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.impl.bindings;
9 import java.util.ArrayList;
10 import java.util.Arrays;
11 import java.util.HashMap;
12 import java.util.concurrent.ConcurrentLinkedQueue;
14 public class PeerTest {
17 final long fee_estimator;
18 final long tx_broadcaster;
19 final long chain_monitor;
21 final long keys_interface;
23 final long chan_manager;
24 final long chan_manager_events;
25 final long chan_handler;
27 final long route_handler;
28 final long message_handler;
29 final long peer_manager;
30 HashMap<String, Long> monitors; // Wow I forgot just how terrible Java is - we can't put a byte array here.
32 bindings.LDKFeeEstimator fee_est;
33 bindings.LDKBroadcasterInterface broad_trait;
34 bindings.LDKLogger log_trait;
35 bindings.LDKWatch watcher;
36 ArrayList<Long> results_to_free;
39 this.log_trait = (String arg)-> System.out.println(seed + ": " + arg);
40 logger = bindings.LDKLogger_new(this.log_trait);
41 this.fee_est = confirmation_target -> 0;
42 this.fee_estimator = bindings.LDKFeeEstimator_new(this.fee_est);
43 this.broad_trait = tx -> {
44 // We should broadcast
46 this.results_to_free = new ArrayList<>();
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 long res = bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
57 results_to_free.add(res);
62 public long update_channel(long funding_txo, long update) {
63 synchronized (monitors) {
64 String txid = Arrays.toString(bindings.OutPoint_get_txid(funding_txo));
65 assert monitors.containsKey(txid);
66 long update_res = bindings.ChannelMonitor_update_monitor(monitors.get(txid), update, tx_broadcaster, fee_estimator, logger);
67 assert bindings.LDKCResult_NoneMonitorUpdateErrorZ_result_ok(update_res);
68 bindings.CResult_NoneMonitorUpdateErrorZ_free(update_res);
70 bindings.OutPoint_free(funding_txo);
71 bindings.ChannelMonitorUpdate_free(update);
72 long res = bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
73 results_to_free.add(res);
78 public long[] release_pending_monitor_events() {
79 synchronized (monitors) {
80 assert monitors.size() <= 1;
81 for (Long mon : monitors.values()) {
82 return bindings.ChannelMonitor_get_and_clear_pending_monitor_events(mon);
88 this.chain_monitor = bindings.LDKWatch_new(this.watcher);
90 byte[] key_seed = new byte[32];
91 for (byte i = 0; i < 32; i++) { key_seed[i] = (byte) (i ^ seed); }
92 this.keys = bindings.KeysManager_new(key_seed, System.currentTimeMillis() / 1000, (int)(System.currentTimeMillis() * 1000) & 0xffffffff);
93 this.keys_interface = bindings.KeysManager_as_KeysInterface(keys);
94 this.config = bindings.UserConfig_default();
95 long params = bindings.ChainParameters_new(Network.LDKNetwork_Bitcoin, bindings.BestBlock_new(new byte[32], 0));
96 this.chan_manager = bindings.ChannelManager_new(fee_estimator, chain_monitor, tx_broadcaster, logger, keys_interface, config, params);
97 this.node_id = bindings.ChannelManager_get_our_node_id(chan_manager);
98 this.chan_manager_events = bindings.ChannelManager_as_EventsProvider(chan_manager);
100 this.chan_handler = bindings.ChannelManager_as_ChannelMessageHandler(chan_manager);
101 this.router = bindings.NetGraphMsgHandler_new(new byte[32], 0, logger);
102 this.route_handler = bindings.NetGraphMsgHandler_as_RoutingMessageHandler(router);
103 this.message_handler = bindings.MessageHandler_new(chan_handler, route_handler);
105 byte[] random_data = new byte[32];
106 for (byte i = 0; i < 32; i++) { random_data[i] = (byte) ((i ^ seed) ^ 0xf0); }
107 this.peer_manager = bindings.PeerManager_new(message_handler, bindings.KeysInterface_get_node_secret(keys_interface), random_data, logger);
110 void connect_block(Block b, Transaction t, int height) {
111 long listen = bindings.ChannelManager_as_Listen(chan_manager);
112 bindings.Listen_block_connected(listen, b.bitcoinSerialize(), height);
113 bindings.Listen_free(listen);
114 synchronized (monitors) {
115 for (Long mon : monitors.values()) {
118 txn = new long[]{bindings.C2Tuple_usizeTransactionZ_new(1, t.bitcoinSerialize())};
121 byte[] header = Arrays.copyOfRange(b.bitcoinSerialize(), 0, 80);
122 long[] ret = bindings.ChannelMonitor_block_connected(mon, header, txn, height, tx_broadcaster, fee_estimator, logger);
124 bindings.C2Tuple_TxidCVec_C2Tuple_u32TxOutZZZ_free(r);
131 // Note that we can't rely on finalizer order, so don't bother trying to rely on it here
132 bindings.Logger_free(logger);
133 bindings.FeeEstimator_free(fee_estimator);
134 bindings.BroadcasterInterface_free(tx_broadcaster);
135 bindings.Watch_free(chain_monitor);
136 bindings.KeysManager_free(keys);
137 bindings.KeysInterface_free(keys_interface);
138 bindings.UserConfig_free(config);
139 bindings.ChannelManager_free(chan_manager);
140 bindings.EventsProvider_free(chan_manager_events);
141 bindings.ChannelMessageHandler_free(chan_handler);
142 bindings.NetGraphMsgHandler_free(router);
143 bindings.RoutingMessageHandler_free(route_handler);
144 //MessageHandler was actually moved into the route_handler!: bindings.MessageHandler_free(message_handler);
145 bindings.PeerManager_free(peer_manager);
146 synchronized (monitors) {
147 for (Long mon : monitors.values()) {
148 bindings.ChannelMonitor_free(mon);
151 for (Long res : results_to_free) {
152 bindings.CResult_NoneChannelMonitorUpdateErrZ_free(res);
157 class LongHolder { long val; }
159 void do_read_event(ConcurrentLinkedQueue<Thread> list, long pm, long descriptor, byte[] arr) {
160 Thread thread = new Thread(() -> {
161 long res = bindings.PeerManager_read_event(pm, descriptor, arr);
162 assert bindings.LDKCResult_boolPeerHandleErrorZ_result_ok(res);
163 //assert bindings.deref_bool(bindings.LDKCResult_boolPeerHandleErrorZ_get_inner(res));
164 bindings.CResult_boolPeerHandleErrorZ_free(res);
170 void deliver_peer_messages(ConcurrentLinkedQueue<Thread> list, long peer1, long peer2) throws InterruptedException {
171 bindings.PeerManager_process_events(peer1);
172 bindings.PeerManager_process_events(peer2);
173 while (!list.isEmpty()) {
175 bindings.PeerManager_process_events(peer1);
176 bindings.PeerManager_process_events(peer2);
181 void test_message_handler() throws InterruptedException {
182 Peer peer1 = new Peer((byte) 1);
183 Peer peer2 = new Peer((byte) 2);
185 ConcurrentLinkedQueue<Thread> list = new ConcurrentLinkedQueue<Thread>();
186 LongHolder descriptor1 = new LongHolder();
187 LongHolder descriptor1ref = descriptor1;
188 bindings.LDKSocketDescriptor sock1 = new bindings.LDKSocketDescriptor() {
190 public long send_data(byte[] data, boolean resume_read) {
191 do_read_event(list, peer1.peer_manager, descriptor1ref.val, data);
195 @Override public void disconnect_socket() { assert false; }
196 @Override public boolean eq(long other_arg) { boolean ret = bindings.SocketDescriptor_hash(other_arg) == 2; bindings.SocketDescriptor_free(other_arg); return ret; }
197 @Override public long hash() { return 2; }
199 long descriptor2 = bindings.LDKSocketDescriptor_new(sock1);
201 bindings.LDKSocketDescriptor sock2 = new bindings.LDKSocketDescriptor() {
203 public long send_data(byte[] data, boolean resume_read) {
204 do_read_event(list, peer2.peer_manager, descriptor2, data);
208 @Override public void disconnect_socket() { assert false; }
209 @Override public boolean eq(long other_arg) { boolean ret = bindings.SocketDescriptor_hash(other_arg) == 1; bindings.SocketDescriptor_free(other_arg); return ret; }
210 @Override public long hash() { return 1; }
212 descriptor1.val = bindings.LDKSocketDescriptor_new(sock2);
214 long init_vec = bindings.PeerManager_new_outbound_connection(peer1.peer_manager, peer2.node_id, descriptor1.val);
215 assert(bindings.LDKCResult_CVec_u8ZPeerHandleErrorZ_result_ok(init_vec));
217 long con_res = bindings.PeerManager_new_inbound_connection(peer2.peer_manager, descriptor2);
218 assert(bindings.LDKCResult_NonePeerHandleErrorZ_result_ok(con_res));
219 bindings.CResult_NonePeerHandleErrorZ_free(con_res);
220 do_read_event(list, peer2.peer_manager, descriptor2, bindings.LDKCResult_CVec_u8ZPeerHandleErrorZ_get_ok(init_vec));
221 bindings.CResult_CVec_u8ZPeerHandleErrorZ_free(init_vec);
223 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
225 long cc_res = bindings.ChannelManager_create_channel(peer1.chan_manager, peer2.node_id, 10000, 1000, 42, 0);
226 assert bindings.LDKCResult_NoneAPIErrorZ_result_ok(cc_res);
227 bindings.CResult_NoneAPIErrorZ_free(cc_res);
229 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
231 ArrayList<Long> events = new ArrayList();
232 long handler = bindings.LDKEventHandler_new(events::add);
234 bindings.EventsProvider_process_pending_events(peer1.chan_manager_events, handler);
235 assert events.size() == 1;
236 bindings.LDKEvent event = bindings.LDKEvent_ref_from_ptr(events.get(0));
237 assert event instanceof bindings.LDKEvent.FundingGenerationReady;
238 assert ((bindings.LDKEvent.FundingGenerationReady)event).channel_value_satoshis == 10000;
239 assert ((bindings.LDKEvent.FundingGenerationReady)event).user_channel_id == 42;
240 byte[] funding_spk = ((bindings.LDKEvent.FundingGenerationReady)event).output_script;
241 assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
242 byte[] chan_id = ((bindings.LDKEvent.FundingGenerationReady)event).temporary_channel_id;
243 bindings.Event_free(events.remove(0));
245 Transaction funding = new Transaction(NetworkParameters.fromID(NetworkParameters.ID_MAINNET));
246 funding.addInput(new TransactionInput(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), funding, new byte[0]));
247 funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
248 funding.getInput(0).getWitness().setPush(0, new byte[] {0x1});
249 funding.addOutput(Coin.SATOSHI.multiply(10000), new Script(funding_spk));
250 bindings.ChannelManager_funding_transaction_generated(peer1.chan_manager, chan_id, funding.bitcoinSerialize());
252 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
254 Block b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
255 peer1.connect_block(b, funding, 1);
256 peer2.connect_block(b, funding, 1);
258 for (int height = 2; height < 10; height++) {
259 b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[0]));
260 peer1.connect_block(b, null, height);
261 peer2.connect_block(b, null, height);
264 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
266 long[] peer1_chans = bindings.ChannelManager_list_channels(peer1.chan_manager);
267 long[] peer2_chans = bindings.ChannelManager_list_channels(peer2.chan_manager);
268 assert peer1_chans.length == 1;
269 assert peer2_chans.length == 1;
270 assert bindings.ChannelDetails_get_channel_value_satoshis(peer1_chans[0]) == 10000;
271 assert bindings.ChannelDetails_get_is_usable(peer1_chans[0]);
272 assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer1_chans[0]), funding.getTxId().getReversedBytes());
273 assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer2_chans[0]), funding.getTxId().getReversedBytes());
274 for (long chan : peer2_chans) bindings.ChannelDetails_free(chan);
276 long no_min_val = bindings.COption_u64Z_none();
277 long inbound_payment = bindings.ChannelManager_create_inbound_payment(peer2.chan_manager, no_min_val, 7200, 42);
278 bindings.COption_u64Z_free(no_min_val);
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, 0L, peer1_chans,
281 new long[0], 1000, 42, peer1.logger);
282 for (long chan : peer1_chans) bindings.ChannelDetails_free(chan);
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_ok(route),
286 bindings.LDKC2Tuple_PaymentHashPaymentSecretZ_get_a(inbound_payment), bindings.LDKC2Tuple_PaymentHashPaymentSecretZ_get_b(inbound_payment));
287 bindings.CResult_RouteLightningErrorZ_free(route);
288 bindings.C2Tuple_PaymentHashPaymentSecretZ_free(inbound_payment);
289 assert bindings.LDKCResult_NonePaymentSendFailureZ_result_ok(payment_res);
290 bindings.CResult_NonePaymentSendFailureZ_free(payment_res);
292 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
294 bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
295 assert events.size() == 1;
296 bindings.LDKEvent forwardable = bindings.LDKEvent_ref_from_ptr(events.get(0));
297 assert forwardable instanceof bindings.LDKEvent.PendingHTLCsForwardable;
298 bindings.Event_free(events.remove(0));
299 bindings.ChannelManager_process_pending_htlc_forwards(peer2.chan_manager);
301 bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
302 assert events.size() == 1;
303 bindings.LDKEvent payment_recvd = bindings.LDKEvent_ref_from_ptr(events.get(0));
304 assert payment_recvd instanceof bindings.LDKEvent.PaymentReceived;
305 assert bindings.ChannelManager_claim_funds(peer2.chan_manager, ((bindings.LDKEvent.PaymentReceived) payment_recvd).payment_preimage);
306 bindings.Event_free(events.remove(0));
308 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
310 bindings.EventsProvider_process_pending_events(peer1.chan_manager_events, handler);
311 assert events.size() == 1;
312 bindings.LDKEvent sent = bindings.LDKEvent_ref_from_ptr(events.get(0));
313 assert sent instanceof bindings.LDKEvent.PaymentSent;
314 bindings.Event_free(events.remove(0));
316 bindings.EventHandler_free(handler);
320 bindings.SocketDescriptor_free(descriptor2);
321 bindings.SocketDescriptor_free(descriptor1.val);