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 custom_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(Network.LDKNetwork_Bitcoin, bindings.BestBlock_new(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(bindings.NetworkGraph_new(new byte[32]), bindings.COption_AccessZ_none(), logger);
103 this.route_handler = bindings.NetGraphMsgHandler_as_RoutingMessageHandler(router);
104 this.message_handler = bindings.MessageHandler_new(chan_handler, route_handler);
105 this.custom_message_handler = bindings.IgnoringMessageHandler_new();
107 byte[] random_data = new byte[32];
108 for (byte i = 0; i < 32; i++) { random_data[i] = (byte) ((i ^ seed) ^ 0xf0); }
109 this.peer_manager = bindings.PeerManager_new(message_handler, bindings.KeysInterface_get_node_secret(keys_interface), random_data,
110 logger, bindings.IgnoringMessageHandler_as_CustomMessageHandler(this.custom_message_handler));
113 void connect_block(Block b, Transaction t, int height) {
114 long listen = bindings.ChannelManager_as_Listen(chan_manager);
115 bindings.Listen_block_connected(listen, b.bitcoinSerialize(), height);
116 bindings.Listen_free(listen);
117 synchronized (monitors) {
118 for (Long mon : monitors.values()) {
121 txn = new long[]{bindings.C2Tuple_usizeTransactionZ_new(1, t.bitcoinSerialize())};
124 byte[] header = Arrays.copyOfRange(b.bitcoinSerialize(), 0, 80);
125 long[] ret = bindings.ChannelMonitor_block_connected(mon, header, txn, height, tx_broadcaster, fee_estimator, logger);
127 bindings.C2Tuple_TxidCVec_C2Tuple_u32TxOutZZZ_free(r);
134 // Note that we can't rely on finalizer order, so don't bother trying to rely on it here
135 bindings.Logger_free(logger);
136 bindings.FeeEstimator_free(fee_estimator);
137 bindings.BroadcasterInterface_free(tx_broadcaster);
138 bindings.Watch_free(chain_monitor);
139 bindings.KeysManager_free(keys);
140 bindings.KeysInterface_free(keys_interface);
141 bindings.UserConfig_free(config);
142 bindings.ChannelManager_free(chan_manager);
143 bindings.EventsProvider_free(chan_manager_events);
144 bindings.ChannelMessageHandler_free(chan_handler);
145 bindings.NetGraphMsgHandler_free(router);
146 bindings.RoutingMessageHandler_free(route_handler);
147 //MessageHandler was actually moved into the route_handler!: bindings.MessageHandler_free(message_handler);
148 bindings.PeerManager_free(peer_manager);
149 synchronized (monitors) {
150 for (Long mon : monitors.values()) {
151 bindings.ChannelMonitor_free(mon);
154 for (Long res : results_to_free) {
155 bindings.CResult_NoneChannelMonitorUpdateErrZ_free(res);
160 class LongHolder { long val; }
162 void do_read_event(ConcurrentLinkedQueue<Thread> list, long pm, long descriptor, byte[] arr) {
163 Thread thread = new Thread(() -> {
164 long res = bindings.PeerManager_read_event(pm, descriptor, arr);
165 assert bindings.LDKCResult_boolPeerHandleErrorZ_result_ok(res);
166 //assert bindings.deref_bool(bindings.LDKCResult_boolPeerHandleErrorZ_get_inner(res));
167 bindings.CResult_boolPeerHandleErrorZ_free(res);
173 void deliver_peer_messages(ConcurrentLinkedQueue<Thread> list, long peer1, long peer2) throws InterruptedException {
174 bindings.PeerManager_process_events(peer1);
175 bindings.PeerManager_process_events(peer2);
176 while (!list.isEmpty()) {
178 bindings.PeerManager_process_events(peer1);
179 bindings.PeerManager_process_events(peer2);
184 void test_message_handler() throws InterruptedException {
185 Peer peer1 = new Peer((byte) 1);
186 Peer peer2 = new Peer((byte) 2);
188 ConcurrentLinkedQueue<Thread> list = new ConcurrentLinkedQueue<Thread>();
189 LongHolder descriptor1 = new LongHolder();
190 LongHolder descriptor1ref = descriptor1;
191 bindings.LDKSocketDescriptor sock1 = new bindings.LDKSocketDescriptor() {
193 public long send_data(byte[] data, boolean resume_read) {
194 do_read_event(list, peer1.peer_manager, descriptor1ref.val, data);
198 @Override public void disconnect_socket() { assert false; }
199 @Override public boolean eq(long other_arg) { boolean ret = bindings.SocketDescriptor_hash(other_arg) == 2; bindings.SocketDescriptor_free(other_arg); return ret; }
200 @Override public long hash() { return 2; }
202 long descriptor2 = bindings.LDKSocketDescriptor_new(sock1);
204 bindings.LDKSocketDescriptor sock2 = new bindings.LDKSocketDescriptor() {
206 public long send_data(byte[] data, boolean resume_read) {
207 do_read_event(list, peer2.peer_manager, descriptor2, data);
211 @Override public void disconnect_socket() { assert false; }
212 @Override public boolean eq(long other_arg) { boolean ret = bindings.SocketDescriptor_hash(other_arg) == 1; bindings.SocketDescriptor_free(other_arg); return ret; }
213 @Override public long hash() { return 1; }
215 descriptor1.val = bindings.LDKSocketDescriptor_new(sock2);
217 long init_vec = bindings.PeerManager_new_outbound_connection(peer1.peer_manager, peer2.node_id, descriptor1.val);
218 assert(bindings.LDKCResult_CVec_u8ZPeerHandleErrorZ_result_ok(init_vec));
220 long con_res = bindings.PeerManager_new_inbound_connection(peer2.peer_manager, descriptor2);
221 assert(bindings.LDKCResult_NonePeerHandleErrorZ_result_ok(con_res));
222 bindings.CResult_NonePeerHandleErrorZ_free(con_res);
223 do_read_event(list, peer2.peer_manager, descriptor2, bindings.LDKCResult_CVec_u8ZPeerHandleErrorZ_get_ok(init_vec));
224 bindings.CResult_CVec_u8ZPeerHandleErrorZ_free(init_vec);
226 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
228 long cc_res = bindings.ChannelManager_create_channel(peer1.chan_manager, peer2.node_id, 10000, 1000, 42, 0);
229 assert bindings.LDKCResult_NoneAPIErrorZ_result_ok(cc_res);
230 bindings.CResult_NoneAPIErrorZ_free(cc_res);
232 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
234 ArrayList<Long> events = new ArrayList();
235 long handler = bindings.LDKEventHandler_new(events::add);
237 bindings.EventsProvider_process_pending_events(peer1.chan_manager_events, handler);
238 assert events.size() == 1;
239 bindings.LDKEvent event = bindings.LDKEvent_ref_from_ptr(events.get(0));
240 assert event instanceof bindings.LDKEvent.FundingGenerationReady;
241 assert ((bindings.LDKEvent.FundingGenerationReady)event).channel_value_satoshis == 10000;
242 assert ((bindings.LDKEvent.FundingGenerationReady)event).user_channel_id == 42;
243 byte[] funding_spk = ((bindings.LDKEvent.FundingGenerationReady)event).output_script;
244 assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
245 byte[] chan_id = ((bindings.LDKEvent.FundingGenerationReady)event).temporary_channel_id;
246 bindings.Event_free(events.remove(0));
248 Transaction funding = new Transaction(NetworkParameters.fromID(NetworkParameters.ID_MAINNET));
249 funding.addInput(new TransactionInput(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), funding, new byte[0]));
250 funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
251 funding.getInput(0).getWitness().setPush(0, new byte[] {0x1});
252 funding.addOutput(Coin.SATOSHI.multiply(10000), new Script(funding_spk));
253 bindings.ChannelManager_funding_transaction_generated(peer1.chan_manager, chan_id, funding.bitcoinSerialize());
255 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
257 Block b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
258 peer1.connect_block(b, funding, 1);
259 peer2.connect_block(b, funding, 1);
261 for (int height = 2; height < 10; height++) {
262 b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[0]));
263 peer1.connect_block(b, null, height);
264 peer2.connect_block(b, null, height);
267 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
269 long[] peer1_chans = bindings.ChannelManager_list_channels(peer1.chan_manager);
270 long[] peer2_chans = bindings.ChannelManager_list_channels(peer2.chan_manager);
271 assert peer1_chans.length == 1;
272 assert peer2_chans.length == 1;
273 assert bindings.ChannelDetails_get_channel_value_satoshis(peer1_chans[0]) == 10000;
274 assert bindings.ChannelDetails_get_is_usable(peer1_chans[0]);
275 assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer1_chans[0]), funding.getTxId().getReversedBytes());
276 assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer2_chans[0]), funding.getTxId().getReversedBytes());
277 for (long chan : peer2_chans) bindings.ChannelDetails_free(chan);
279 long no_min_val = bindings.COption_u64Z_none();
280 long inbound_payment = bindings.ChannelManager_create_inbound_payment(peer2.chan_manager, no_min_val, 7200, 42);
281 bindings.COption_u64Z_free(no_min_val);
282 long netgraph = bindings.NetGraphMsgHandler_get_network_graph(peer1.router);
283 long route = bindings.get_route(peer1.node_id, netgraph, peer2.node_id, 0L, peer1_chans,
284 new long[0], 1000, 42, peer1.logger);
285 for (long chan : peer1_chans) bindings.ChannelDetails_free(chan);
286 assert bindings.LDKCResult_RouteLightningErrorZ_result_ok(route);
287 bindings.NetworkGraph_free(netgraph);
288 long payment_res = bindings.ChannelManager_send_payment(peer1.chan_manager, bindings.LDKCResult_RouteLightningErrorZ_get_ok(route),
289 bindings.LDKC2Tuple_PaymentHashPaymentSecretZ_get_a(inbound_payment), bindings.LDKC2Tuple_PaymentHashPaymentSecretZ_get_b(inbound_payment));
290 bindings.CResult_RouteLightningErrorZ_free(route);
291 bindings.C2Tuple_PaymentHashPaymentSecretZ_free(inbound_payment);
292 assert bindings.LDKCResult_NonePaymentSendFailureZ_result_ok(payment_res);
293 bindings.CResult_NonePaymentSendFailureZ_free(payment_res);
295 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
297 bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
298 assert events.size() == 1;
299 bindings.LDKEvent forwardable = bindings.LDKEvent_ref_from_ptr(events.get(0));
300 assert forwardable instanceof bindings.LDKEvent.PendingHTLCsForwardable;
301 bindings.Event_free(events.remove(0));
302 bindings.ChannelManager_process_pending_htlc_forwards(peer2.chan_manager);
304 bindings.EventsProvider_process_pending_events(peer2.chan_manager_events, handler);
305 assert events.size() == 1;
306 bindings.LDKEvent payment_recvd = bindings.LDKEvent_ref_from_ptr(events.get(0));
307 assert payment_recvd instanceof bindings.LDKEvent.PaymentReceived;
308 bindings.LDKPaymentPurpose purpose = bindings.LDKPaymentPurpose_ref_from_ptr(((bindings.LDKEvent.PaymentReceived) payment_recvd).purpose);
309 assert purpose instanceof bindings.LDKPaymentPurpose.InvoicePayment;
310 assert bindings.ChannelManager_claim_funds(peer2.chan_manager, ((bindings.LDKPaymentPurpose.InvoicePayment) purpose).payment_preimage);
311 bindings.Event_free(events.remove(0));
313 deliver_peer_messages(list, peer1.peer_manager, peer2.peer_manager);
315 bindings.EventsProvider_process_pending_events(peer1.chan_manager_events, handler);
316 assert events.size() == 1;
317 bindings.LDKEvent sent = bindings.LDKEvent_ref_from_ptr(events.get(0));
318 assert sent instanceof bindings.LDKEvent.PaymentSent;
319 bindings.Event_free(events.remove(0));
321 bindings.EventHandler_free(handler);
325 bindings.SocketDescriptor_free(descriptor2);
326 bindings.SocketDescriptor_free(descriptor1.val);