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.concurrent.ConcurrentHashMap;
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<byte[], Long> monitors;
34 logger = bindings.LDKLogger_new((String arg)-> System.out.println(seed + ": " + arg));
35 this.fee_estimator = bindings.LDKFeeEstimator_new(confirmation_target -> 0);
36 this.tx_broadcaster = bindings.LDKBroadcasterInterface_new(tx -> {
37 // We should broadcast
39 this.monitors = new HashMap<>();
40 this.chain_monitor = bindings.LDKWatch_new(new bindings.LDKWatch() {
42 public long watch_channel(long funding_txo, long monitor) {
43 synchronized (monitors) {
44 assert monitors.put(bindings.OutPoint_get_txid(funding_txo), monitor) == null;
46 bindings.OutPoint_free(funding_txo);
47 return bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
51 public long update_channel(long funding_txo, long update) {
52 synchronized (monitors) {
53 bindings.ChannelMonitor_update_monitor(monitors.get(bindings.OutPoint_get_txid(funding_txo)), update, tx_broadcaster, logger);
55 bindings.OutPoint_free(funding_txo);
56 bindings.ChannelMonitorUpdate_free(update);
57 return bindings.CResult_NoneChannelMonitorUpdateErrZ_ok();
61 public long release_pending_monitor_events() {
62 return bindings.new_empty_slice_vec();
66 byte[] key_seed = new byte[32];
67 for (byte i = 0; i < 32; i++) { key_seed[i] = (byte) (i ^ seed); }
68 this.keys = bindings.KeysManager_new(key_seed, LDKNetwork.LDKNetwork_Bitcoin, System.currentTimeMillis() / 1000, (int)(System.currentTimeMillis() * 1000) & 0xffffffff);
69 this.keys_interface = bindings.KeysManager_as_KeysInterface(keys);
70 this.config = bindings.UserConfig_default();
71 this.chan_manager = bindings.ChannelManager_new(LDKNetwork.LDKNetwork_Bitcoin, fee_estimator, chain_monitor, tx_broadcaster, logger, keys_interface, config, 1);
72 this.chan_manager_events = bindings.ChannelManager_as_EventsProvider(chan_manager);
74 this.chan_handler = bindings.ChannelManager_as_ChannelMessageHandler(chan_manager);
75 this.router = bindings.NetGraphMsgHandler_new(0, logger);
76 this.route_handler = bindings.NetGraphMsgHandler_as_RoutingMessageHandler(router);
77 this.message_handler = bindings.MessageHandler_new(chan_handler, route_handler);
79 byte[] random_data = new byte[32];
80 for (byte i = 0; i < 32; i++) { random_data[i] = (byte) ((i ^ seed) ^ 0xf0); }
81 this.peer_manager = bindings.PeerManager_new(message_handler, bindings.LDKKeysInterface_call_get_node_secret(keys_interface), random_data, logger);
84 void connect_block(Block b, Transaction t) {
85 byte[] header = b.bitcoinSerialize();
86 long txn = bindings.LDKCVecTempl_C2TupleTempl_usize__Transaction_new(
87 new long[] {bindings.C2Tuple_usizeTransactionZ_new(1, bindings.new_txpointer_copy_data(t.bitcoinSerialize()))});
88 bindings.ChannelManager_block_connected(chan_manager, header, txn, 1);
89 synchronized (monitors) {
90 for (Long mon : monitors.values()) {
91 txn = bindings.LDKCVecTempl_C2TupleTempl_usize__Transaction_new(
92 new long[] {bindings.C2Tuple_usizeTransactionZ_new(1, bindings.new_txpointer_copy_data(t.bitcoinSerialize()))});
93 long ret = bindings.ChannelMonitor_block_connected(mon, header, txn, 1, tx_broadcaster, fee_estimator, logger);
94 bindings.CVec_C2Tuple_TxidCVec_TxOutZZZ_free(ret);
100 // Note that we can't rely on finalizer order, so don't bother trying to rely on it here
101 bindings.Logger_free(logger);
102 bindings.FeeEstimator_free(fee_estimator);
103 bindings.BroadcasterInterface_free(tx_broadcaster);
104 bindings.Watch_free(chain_monitor);
105 bindings.KeysManager_free(keys);
106 bindings.KeysInterface_free(keys_interface);
107 bindings.ChannelManager_free(chan_manager);
108 bindings.EventsProvider_free(chan_manager_events);
109 bindings.ChannelMessageHandler_free(chan_handler);
110 bindings.NetGraphMsgHandler_free(router);
111 bindings.RoutingMessageHandler_free(route_handler);
112 //MessageHandler was actually moved into the route_handler!: bindings.MessageHandler_free(message_handler);
113 bindings.PeerManager_free(peer_manager);
114 synchronized (monitors) {
115 for (Long mon : monitors.values()) {
116 bindings.ChannelMonitor_free(mon);
122 class LongHolder { long val; }
124 byte[] do_read_event(ConcurrentLinkedQueue<Thread> list, long pm, long descriptor, long data) {
125 byte[] arr = bindings.get_u8_slice_bytes(data);
126 Thread thread = new Thread(() -> {
127 long arr_vec = bindings.bytes_to_u8_vec(arr);
128 long res = bindings.PeerManager_read_event(pm, descriptor, arr_vec);
129 assert bindings.LDKCResult_boolPeerHandleErrorZ_result_ok(res);
130 //assert bindings.deref_bool(bindings.LDKCResult_boolPeerHandleErrorZ_get_inner(res));
131 bindings.CResult_boolPeerHandleErrorZ_free(res);
132 bindings.CVec_u8Z_free(arr_vec);
140 void test_message_handler() throws InterruptedException {
141 Peer peer1 = new Peer((byte) 1);
142 Peer peer2 = new Peer((byte) 2);
144 ConcurrentLinkedQueue<Thread> list = new ConcurrentLinkedQueue<Thread>();
145 LongHolder descriptor1 = new LongHolder();
146 LongHolder descriptor1ref = descriptor1;
147 long descriptor2 = bindings.LDKSocketDescriptor_new(new bindings.LDKSocketDescriptor() {
149 public long send_data(long data, boolean resume_read) {
150 return do_read_event(list, peer1.peer_manager, descriptor1ref.val, data).length;
153 @Override public void disconnect_socket() { assert false; }
154 @Override public boolean eq(long other_arg) { return bindings.LDKSocketDescriptor_get_obj_from_jcalls(other_arg).hash() == 2; }
155 @Override public long hash() { return 2; }
158 descriptor1.val = bindings.LDKSocketDescriptor_new(new bindings.LDKSocketDescriptor() {
160 public long send_data(long data, boolean resume_read) {
161 return do_read_event(list, peer2.peer_manager, descriptor2, data).length;
164 @Override public void disconnect_socket() { assert false; }
165 @Override public boolean eq(long other_arg) { return bindings.LDKSocketDescriptor_get_obj_from_jcalls(other_arg).hash() == 1; }
166 @Override public long hash() { return 1; }
169 long init_vec = bindings.PeerManager_new_outbound_connection(peer1.peer_manager, bindings.ChannelManager_get_our_node_id(peer2.chan_manager), descriptor1.val);
170 assert(bindings.LDKCResult_CVec_u8ZPeerHandleErrorZ_result_ok(init_vec));
172 long con_res = bindings.PeerManager_new_inbound_connection(peer2.peer_manager, descriptor2);
173 assert(bindings.LDKCResult_NonePeerHandleErrorZ_result_ok(con_res));
174 bindings.CResult_NonePeerHandleErrorZ_free(con_res);
175 do_read_event(list, peer2.peer_manager, descriptor2, bindings.LDKCResult_CVec_u8ZPeerHandleErrorZ_get_inner(init_vec));
176 bindings.CResult_CVec_u8ZPeerHandleErrorZ_free(init_vec);
178 while (!list.isEmpty()) { list.poll().join(); }
180 long cc_res = bindings.ChannelManager_create_channel(peer1.chan_manager, bindings.ChannelManager_get_our_node_id(peer2.chan_manager), 10000, 1000, 42, 0);
181 assert bindings.LDKCResult_NoneAPIErrorZ_result_ok(cc_res);
182 bindings.CResult_NoneAPIErrorZ_free(cc_res);
184 bindings.PeerManager_process_events(peer1.peer_manager);
185 while (!list.isEmpty()) { list.poll().join(); }
186 bindings.PeerManager_process_events(peer2.peer_manager);
187 while (!list.isEmpty()) { list.poll().join(); }
189 long events = bindings.LDKEventsProvider_call_get_and_clear_pending_events(peer1.chan_manager_events);
190 bindings.VecOrSliceDef events_arr_info = bindings.LDKCVecTempl_Event_arr_info(events);
191 assert events_arr_info.datalen == 1;
192 bindings.LDKEvent event = bindings.LDKEvent_ref_from_ptr(events_arr_info.dataptr);
193 assert event instanceof bindings.LDKEvent.FundingGenerationReady;
194 assert ((bindings.LDKEvent.FundingGenerationReady)event).channel_value_satoshis == 10000;
195 assert ((bindings.LDKEvent.FundingGenerationReady)event).user_channel_id == 42;
196 byte[] funding_spk = bindings.get_u8_slice_bytes(((bindings.LDKEvent.FundingGenerationReady)event).output_script);
197 assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
198 byte[] chan_id = ((bindings.LDKEvent.FundingGenerationReady)event).temporary_channel_id;
199 bindings.CVec_EventZ_free(events);
201 Transaction funding = new Transaction(NetworkParameters.fromID(NetworkParameters.ID_MAINNET));
202 funding.addInput(new TransactionInput(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), funding, new byte[0]));
203 //funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
204 funding.addOutput(Coin.SATOSHI.multiply(10000), new Script(funding_spk));
205 bindings.ChannelManager_funding_transaction_generated(peer1.chan_manager, chan_id, bindings.OutPoint_new(funding.getTxId().getBytes(), (short) 0));
207 bindings.PeerManager_process_events(peer1.peer_manager);
208 while (!list.isEmpty()) { list.poll().join(); }
209 bindings.PeerManager_process_events(peer2.peer_manager);
210 while (!list.isEmpty()) { list.poll().join(); }
212 events = bindings.LDKEventsProvider_call_get_and_clear_pending_events(peer1.chan_manager_events);
213 events_arr_info = bindings.LDKCVecTempl_Event_arr_info(events);
214 assert events_arr_info.datalen == 1;
215 event = bindings.LDKEvent_ref_from_ptr(events_arr_info.dataptr);
216 assert event instanceof bindings.LDKEvent.FundingBroadcastSafe;
217 bindings.CVec_EventZ_free(events);
219 Block b = new Block(NetworkParameters.fromID(NetworkParameters.ID_MAINNET), 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
220 peer1.connect_block(b, funding);
221 peer2.connect_block(b, funding);
223 long peer1_chans = bindings.ChannelManager_list_channels(peer1.chan_manager);
224 long peer2_chans = bindings.ChannelManager_list_channels(peer2.chan_manager);
225 assert bindings.vec_slice_len(peer1_chans) == 1;
226 assert bindings.vec_slice_len(peer2_chans) == 1;
227 long[] peer_1_chan_info = bindings.LDKCVecTempl_ChannelDetails_arr_info(peer1_chans);
228 assert peer_1_chan_info.length == 1;
229 assert bindings.ChannelDetails_get_channel_value_satoshis(peer_1_chan_info[0]) == 10000;
230 assert !bindings.ChannelDetails_get_is_live(peer_1_chan_info[0]);
231 assert Arrays.equals(bindings.ChannelDetails_get_channel_id(peer_1_chan_info[0]), funding.getTxId().getBytes());
232 assert Arrays.equals(bindings.ChannelDetails_get_channel_id(bindings.LDKCVecTempl_ChannelDetails_arr_info(peer2_chans)[0]), funding.getTxId().getBytes());
233 bindings.CVec_ChannelDetailsZ_free(peer1_chans);
234 bindings.CVec_ChannelDetailsZ_free(peer2_chans);
238 bindings.SocketDescriptor_free(descriptor2);
239 bindings.SocketDescriptor_free(descriptor1.val);