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.ArrayList;
10 import java.util.Arrays;
11 import java.util.HashMap;
12 import java.util.List;
13 import java.util.concurrent.ConcurrentHashMap;
14 import java.util.concurrent.ConcurrentLinkedQueue;
16 public class PeerTest {
19 final long fee_estimator;
20 final long tx_broadcaster;
21 final long chain_monitor;
23 final long keys_interface;
25 final long chan_manager;
26 final long chan_manager_events;
27 final long chan_handler;
29 final long route_handler;
30 final long message_handler;
31 final long peer_manager;
32 HashMap<String, Long> monitors; // Wow I forgot just how terrible Java is - we can't put a byte array here.
36 logger = bindings.LDKLogger_new((String arg)-> System.out.println(seed + ": " + arg));
37 this.fee_estimator = bindings.LDKFeeEstimator_new(confirmation_target -> 0);
38 this.tx_broadcaster = bindings.LDKBroadcasterInterface_new(tx -> {
39 // We should broadcast
41 this.monitors = new HashMap<>();
42 this.chain_monitor = bindings.LDKWatch_new(new bindings.LDKWatch() {
44 public long watch_channel(long funding_txo, long monitor) {
45 synchronized (monitors) {
46 assert monitors.put(Arrays.toString(bindings.OutPoint_get_txid(funding_txo)), monitor) == null;
48 bindings.OutPoint_free(funding_txo);
49 return bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
53 public long update_channel(long funding_txo, long update) {
54 synchronized (monitors) {
55 String txid = Arrays.toString(bindings.OutPoint_get_txid(funding_txo));
56 assert monitors.containsKey(txid);
57 long update_res = bindings.ChannelMonitor_update_monitor(monitors.get(txid), update, tx_broadcaster, logger);
58 assert bindings.LDKCResult_NoneMonitorUpdateErrorZ_result_ok(update_res);
59 bindings.CResult_NoneMonitorUpdateErrorZ_free(update_res);
61 bindings.OutPoint_free(funding_txo);
62 //bindings.ChannelMonitorUpdate_free(update); We'll need this after 681
63 return bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
67 public long release_pending_monitor_events() {
68 synchronized (monitors) {
69 assert monitors.size() <= 1;
70 for (Long mon : monitors.values()) {
71 return bindings.ChannelMonitor_get_and_clear_pending_monitor_events(mon);
74 return bindings.new_empty_slice_vec();
78 byte[] key_seed = new byte[32];
79 for (byte i = 0; i < 32; i++) { key_seed[i] = (byte) (i ^ seed); }
80 this.keys = bindings.KeysManager_new(key_seed, LDKNetwork.LDKNetwork_Bitcoin, System.currentTimeMillis() / 1000, (int)(System.currentTimeMillis() * 1000) & 0xffffffff);
81 this.keys_interface = bindings.KeysManager_as_KeysInterface(keys);
82 this.config = bindings.UserConfig_default();
83 this.chan_manager = bindings.ChannelManager_new(LDKNetwork.LDKNetwork_Bitcoin, fee_estimator, chain_monitor, tx_broadcaster, logger, keys_interface, config, 1);
84 this.node_id = bindings.ChannelManager_get_our_node_id(chan_manager);
85 this.chan_manager_events = bindings.ChannelManager_as_EventsProvider(chan_manager);
87 this.chan_handler = bindings.ChannelManager_as_ChannelMessageHandler(chan_manager);
88 this.router = bindings.NetGraphMsgHandler_new(0, logger);
89 this.route_handler = bindings.NetGraphMsgHandler_as_RoutingMessageHandler(router);
90 this.message_handler = bindings.MessageHandler_new(chan_handler, route_handler);
92 byte[] random_data = new byte[32];
93 for (byte i = 0; i < 32; i++) { random_data[i] = (byte) ((i ^ seed) ^ 0xf0); }
94 this.peer_manager = bindings.PeerManager_new(message_handler, bindings.LDKKeysInterface_call_get_node_secret(keys_interface), random_data, logger);
97 void connect_block(Block b, Transaction t, int height) {
98 byte[] header = b.bitcoinSerialize();
101 txn = bindings.LDKCVecTempl_C2TupleTempl_usize__Transaction_new(
102 new long[] {bindings.C2Tuple_usizeTransactionZ_new(1, bindings.new_txpointer_copy_data(t.bitcoinSerialize()))});
104 txn = bindings.LDKCVecTempl_C2TupleTempl_usize__Transaction_new(new long[0]);
105 bindings.ChannelManager_block_connected(chan_manager, header, txn, height);
106 synchronized (monitors) {
107 for (Long mon : monitors.values()) {
109 txn = bindings.LDKCVecTempl_C2TupleTempl_usize__Transaction_new(
110 new long[] {bindings.C2Tuple_usizeTransactionZ_new(1, bindings.new_txpointer_copy_data(t.bitcoinSerialize()))});
112 txn = bindings.LDKCVecTempl_C2TupleTempl_usize__Transaction_new(new long[0]);
113 long ret = bindings.ChannelMonitor_block_connected(mon, header, txn, height, tx_broadcaster, fee_estimator, logger);
114 bindings.CVec_C2Tuple_TxidCVec_TxOutZZZ_free(ret);
120 // Note that we can't rely on finalizer order, so don't bother trying to rely on it here
121 bindings.Logger_free(logger);
122 bindings.FeeEstimator_free(fee_estimator);
123 bindings.BroadcasterInterface_free(tx_broadcaster);
124 bindings.Watch_free(chain_monitor);
125 bindings.KeysManager_free(keys);
126 bindings.KeysInterface_free(keys_interface);
127 bindings.ChannelManager_free(chan_manager);
128 bindings.EventsProvider_free(chan_manager_events);
129 bindings.ChannelMessageHandler_free(chan_handler);
130 bindings.NetGraphMsgHandler_free(router);
131 bindings.RoutingMessageHandler_free(route_handler);
132 //MessageHandler was actually moved into the route_handler!: bindings.MessageHandler_free(message_handler);
133 bindings.PeerManager_free(peer_manager);
134 synchronized (monitors) {
135 for (Long mon : monitors.values()) {
136 bindings.ChannelMonitor_free(mon);
142 class LongHolder { long val; }
144 byte[] do_read_event(ConcurrentLinkedQueue<Thread> list, long pm, long descriptor, long data) {
145 byte[] arr = bindings.get_u8_slice_bytes(data);
146 Thread thread = new Thread(() -> {
147 long arr_vec = bindings.bytes_to_u8_vec(arr);
148 long res = bindings.PeerManager_read_event(pm, descriptor, arr_vec);
149 assert bindings.LDKCResult_boolPeerHandleErrorZ_result_ok(res);
150 //assert bindings.deref_bool(bindings.LDKCResult_boolPeerHandleErrorZ_get_inner(res));
151 bindings.CResult_boolPeerHandleErrorZ_free(res);
152 bindings.CVec_u8Z_free(arr_vec);
160 void test_message_handler() throws InterruptedException {
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 long descriptor2 = bindings.LDKSocketDescriptor_new(new bindings.LDKSocketDescriptor() {
169 public long send_data(long data, boolean resume_read) {
170 return do_read_event(list, peer1.peer_manager, descriptor1ref.val, data).length;
173 @Override public void disconnect_socket() { assert false; }
174 @Override public boolean eq(long other_arg) { return bindings.LDKSocketDescriptor_get_obj_from_jcalls(other_arg).hash() == 2; }
175 @Override public long hash() { return 2; }
178 descriptor1.val = bindings.LDKSocketDescriptor_new(new bindings.LDKSocketDescriptor() {
180 public long send_data(long data, boolean resume_read) {
181 return do_read_event(list, peer2.peer_manager, descriptor2, data).length;
184 @Override public void disconnect_socket() { assert false; }
185 @Override public boolean eq(long other_arg) { return bindings.LDKSocketDescriptor_get_obj_from_jcalls(other_arg).hash() == 1; }
186 @Override public long hash() { return 1; }
189 long init_vec = bindings.PeerManager_new_outbound_connection(peer1.peer_manager, peer2.node_id, descriptor1.val);
190 assert(bindings.LDKCResult_CVec_u8ZPeerHandleErrorZ_result_ok(init_vec));
192 long con_res = bindings.PeerManager_new_inbound_connection(peer2.peer_manager, descriptor2);
193 assert(bindings.LDKCResult_NonePeerHandleErrorZ_result_ok(con_res));
194 bindings.CResult_NonePeerHandleErrorZ_free(con_res);
195 do_read_event(list, peer2.peer_manager, descriptor2, bindings.LDKCResult_CVec_u8ZPeerHandleErrorZ_get_inner(init_vec));
196 bindings.CResult_CVec_u8ZPeerHandleErrorZ_free(init_vec);
198 while (!list.isEmpty()) { list.poll().join(); }
200 long cc_res = bindings.ChannelManager_create_channel(peer1.chan_manager, peer2.node_id, 10000, 1000, 42, 0);
201 assert bindings.LDKCResult_NoneAPIErrorZ_result_ok(cc_res);
202 bindings.CResult_NoneAPIErrorZ_free(cc_res);
204 bindings.PeerManager_process_events(peer1.peer_manager);
205 while (!list.isEmpty()) { list.poll().join(); }
206 bindings.PeerManager_process_events(peer2.peer_manager);
207 while (!list.isEmpty()) { list.poll().join(); }
209 long events = bindings.LDKEventsProvider_call_get_and_clear_pending_events(peer1.chan_manager_events);
210 bindings.VecOrSliceDef events_arr_info = bindings.LDKCVecTempl_Event_arr_info(events);
211 assert events_arr_info.datalen == 1;
212 bindings.LDKEvent event = bindings.LDKEvent_ref_from_ptr(events_arr_info.dataptr);
213 assert event instanceof bindings.LDKEvent.FundingGenerationReady;
214 assert ((bindings.LDKEvent.FundingGenerationReady)event).channel_value_satoshis == 10000;
215 assert ((bindings.LDKEvent.FundingGenerationReady)event).user_channel_id == 42;
216 byte[] funding_spk = bindings.get_u8_slice_bytes(((bindings.LDKEvent.FundingGenerationReady)event).output_script);
217 assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
218 byte[] chan_id = ((bindings.LDKEvent.FundingGenerationReady)event).temporary_channel_id;
219 bindings.CVec_EventZ_free(events);
221 Transaction funding = new Transaction(NetworkParameters.fromID(NetworkParameters.ID_MAINNET));
222 funding.addInput(new TransactionInput(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), funding, new byte[0]));
223 funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
224 funding.getInput(0).getWitness().setPush(0, new byte[] {0x1});
225 funding.addOutput(Coin.SATOSHI.multiply(10000), new Script(funding_spk));
226 bindings.ChannelManager_funding_transaction_generated(peer1.chan_manager, chan_id, bindings.OutPoint_new(funding.getTxId().getReversedBytes(), (short) 0));
228 bindings.PeerManager_process_events(peer1.peer_manager);
229 while (!list.isEmpty()) { list.poll().join(); }
230 bindings.PeerManager_process_events(peer2.peer_manager);
231 while (!list.isEmpty()) { list.poll().join(); }
233 events = bindings.LDKEventsProvider_call_get_and_clear_pending_events(peer1.chan_manager_events);
234 events_arr_info = bindings.LDKCVecTempl_Event_arr_info(events);
235 assert events_arr_info.datalen == 1;
236 event = bindings.LDKEvent_ref_from_ptr(events_arr_info.dataptr);
237 assert event instanceof bindings.LDKEvent.FundingBroadcastSafe;
238 bindings.CVec_EventZ_free(events);
240 Block b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
241 peer1.connect_block(b, funding, 1);
242 peer2.connect_block(b, funding, 1);
244 for (int height = 2; height < 10; height++) {
245 b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
246 peer1.connect_block(b, null, height);
247 peer2.connect_block(b, null, height);
250 bindings.PeerManager_process_events(peer1.peer_manager);
251 bindings.PeerManager_process_events(peer2.peer_manager);
252 while (!list.isEmpty()) { list.poll().join(); }
254 long peer1_chans = bindings.ChannelManager_list_channels(peer1.chan_manager);
255 long peer2_chans = bindings.ChannelManager_list_channels(peer2.chan_manager);
256 assert bindings.vec_slice_len(peer1_chans) == 1;
257 assert bindings.vec_slice_len(peer2_chans) == 1;
258 long[] peer_1_chan_info = bindings.LDKCVecTempl_ChannelDetails_arr_info(peer1_chans);
259 assert peer_1_chan_info.length == 1;
260 assert bindings.ChannelDetails_get_channel_value_satoshis(peer_1_chan_info[0]) == 10000;
261 assert bindings.ChannelDetails_get_is_live(peer_1_chan_info[0]);
262 assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer_1_chan_info[0]), funding.getTxId().getReversedBytes());
263 assert Arrays.equals(bindings.ChannelDetails_get_channel_id(bindings.LDKCVecTempl_ChannelDetails_arr_info(peer2_chans)[0]), funding.getTxId().getReversedBytes());
264 bindings.CVec_ChannelDetailsZ_free(peer2_chans);
266 byte[] payment_preimage = new byte[32];
267 for (int i = 0; i < 32; i++) payment_preimage[i] = (byte) (i ^ 0x0f);
268 byte[] payment_hash = Sha256Hash.hash(payment_preimage);
269 long netgraph = bindings.NetGraphMsgHandler_read_locked_graph(peer1.router);
270 long route = bindings.get_route(peer1.node_id, bindings.LockedNetworkGraph_graph(netgraph), peer2.node_id, peer1_chans,
271 bindings.LDKCVecTempl_RouteHint_new(new long[0]), 1000, 42, peer1.logger);
272 bindings.CVec_ChannelDetailsZ_free(peer1_chans);
273 assert bindings.LDKCResult_RouteLightningErrorZ_result_ok(route);
274 bindings.LockedNetworkGraph_free(netgraph);
275 long payment_res = bindings.ChannelManager_send_payment(peer1.chan_manager, bindings.LDKCResult_RouteLightningErrorZ_get_inner(route), payment_hash, new byte[32]);
276 bindings.CResult_RouteLightningErrorZ_free(route);
277 assert bindings.LDKCResult_NonePaymentSendFailureZ_result_ok(payment_res);
278 bindings.CResult_NonePaymentSendFailureZ_free(payment_res);
282 bindings.SocketDescriptor_free(descriptor2);
283 bindings.SocketDescriptor_free(descriptor1.val);