8 #include "include/lightningpp.hpp"
12 #include <sys/socket.h>
13 #include <netinet/in.h>
14 #include <arpa/inet.h>
24 const uint8_t valid_node_announcement[] = {
25 0x94, 0xe4, 0xf5, 0x61, 0x41, 0x24, 0x7d, 0x90, 0x23, 0xa0, 0xc8, 0x34, 0x8c, 0xc4, 0xca, 0x51,
26 0xd8, 0x17, 0x59, 0xff, 0x7d, 0xac, 0x8c, 0x9b, 0x63, 0x29, 0x1c, 0xe6, 0x12, 0x12, 0x93, 0xbd,
27 0x66, 0x4d, 0x6b, 0x9c, 0xfb, 0x35, 0xda, 0x16, 0x06, 0x3d, 0xf0, 0x8f, 0x8a, 0x39, 0x99, 0xa2,
28 0xf2, 0x5d, 0x12, 0x0f, 0x2b, 0x42, 0x1b, 0x8b, 0x9a, 0xfe, 0x33, 0x0c, 0xeb, 0x33, 0x5e, 0x52,
29 0xee, 0x99, 0xa1, 0x07, 0x06, 0xed, 0xf8, 0x48, 0x7a, 0xc6, 0xe5, 0xf5, 0x5e, 0x01, 0x3a, 0x41,
30 0x2f, 0x18, 0x94, 0x8a, 0x3b, 0x0a, 0x52, 0x3f, 0xbf, 0x61, 0xa9, 0xc5, 0x4f, 0x70, 0xee, 0xb8,
31 0x79, 0x23, 0xbb, 0x1a, 0x44, 0x7d, 0x91, 0xe6, 0x2a, 0xbc, 0xa1, 0x07, 0xbc, 0x65, 0x3b, 0x02,
32 0xd9, 0x1d, 0xb2, 0xf2, 0x3a, 0xcb, 0x75, 0x79, 0xc6, 0x66, 0xd8, 0xc1, 0x71, 0x29, 0xdf, 0x04,
33 0x60, 0xf4, 0xbf, 0x07, 0x7b, 0xb9, 0xc2, 0x11, 0x94, 0x6a, 0x28, 0xc2, 0xdd, 0xd8, 0x7b, 0x44,
34 0x8f, 0x08, 0xe3, 0xc8, 0xd8, 0xf4, 0x81, 0xb0, 0x9f, 0x94, 0xcb, 0xc8, 0xc1, 0x3c, 0xc2, 0x6e,
35 0x31, 0x26, 0xfc, 0x33, 0x16, 0x3b, 0xe0, 0xde, 0xa1, 0x16, 0x21, 0x9f, 0x89, 0xdd, 0x97, 0xa4,
36 0x41, 0xf2, 0x9f, 0x19, 0xb1, 0xae, 0x82, 0xf7, 0x85, 0x9a, 0xb7, 0x8f, 0xb7, 0x52, 0x7a, 0x72,
37 0xf1, 0x5e, 0x89, 0xe1, 0x8a, 0xcd, 0x40, 0xb5, 0x8e, 0xc3, 0xca, 0x42, 0x76, 0xa3, 0x6e, 0x1b,
38 0xf4, 0x87, 0x35, 0x30, 0x58, 0x43, 0x04, 0xd9, 0x2c, 0x50, 0x54, 0x55, 0x47, 0x6f, 0x70, 0x9b,
39 0x42, 0x1f, 0x91, 0xfc, 0xa1, 0xdb, 0x72, 0x53, 0x96, 0xc8, 0xe5, 0xcd, 0x0e, 0xcb, 0xa0, 0xfe,
40 0x6b, 0x08, 0x77, 0x48, 0xb7, 0xad, 0x4a, 0x69, 0x7c, 0xdc, 0xd8, 0x04, 0x28, 0x35, 0x9b, 0x73,
41 0x00, 0x00, 0x43, 0x49, 0x7f, 0xd7, 0xf8, 0x26, 0x95, 0x71, 0x08, 0xf4, 0xa3, 0x0f, 0xd9, 0xce,
42 0xc3, 0xae, 0xba, 0x79, 0x97, 0x20, 0x84, 0xe9, 0x0e, 0xad, 0x01, 0xea, 0x33, 0x09, 0x00, 0x00,
43 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x5b, 0xe5, 0xe9, 0x47, 0x82,
44 0x09, 0x67, 0x4a, 0x96, 0xe6, 0x0f, 0x1f, 0x03, 0x7f, 0x61, 0x76, 0x54, 0x0f, 0xd0, 0x01, 0xfa,
45 0x1d, 0x64, 0x69, 0x47, 0x70, 0xc5, 0x6a, 0x77, 0x09, 0xc4, 0x2c, 0x03, 0x5c, 0x4e, 0x0d, 0xec,
46 0x72, 0x15, 0xe2, 0x68, 0x33, 0x93, 0x87, 0x30, 0xe5, 0xe5, 0x05, 0xaa, 0x62, 0x50, 0x4d, 0xa8,
47 0x5b, 0xa5, 0x71, 0x06, 0xa4, 0x6b, 0x5a, 0x24, 0x04, 0xfc, 0x9d, 0x8e, 0x02, 0xba, 0x72, 0xa6,
48 0xe8, 0xba, 0x53, 0xe8, 0xb9, 0x71, 0xad, 0x0c, 0x98, 0x23, 0x96, 0x8a, 0xef, 0x4d, 0x78, 0xce,
49 0x8a, 0xf2, 0x55, 0xab, 0x43, 0xdf, 0xf8, 0x30, 0x03, 0xc9, 0x02, 0xfb, 0x8d, 0x02, 0x16, 0x34,
50 0x5b, 0xf8, 0x31, 0x16, 0x4a, 0x03, 0x75, 0x8e, 0xae, 0xa5, 0xe8, 0xb6, 0x6f, 0xee, 0x2b, 0xe7,
51 0x71, 0x0b, 0x8f, 0x19, 0x0e, 0xe8, 0x80, 0x24, 0x90, 0x32, 0xa2, 0x9e, 0xd6, 0x6e
54 // A simple block containing only one transaction (which is the channel-open transaction for the
55 // channel we'll create). This was originally created by printing additional data in a simple
56 // rust-lightning unit test.
57 const uint8_t channel_open_block[] = {
58 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
59 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
60 0x00, 0x00, 0x00, 0x00, 0xa2, 0x47, 0xd2, 0xf8, 0xd4, 0xe0, 0x6a, 0x3f, 0xf9, 0x7a, 0x9a, 0x34,
61 0xbb, 0xa9, 0x96, 0xde, 0x63, 0x84, 0x5a, 0xce, 0xcf, 0x98, 0xb8, 0xbb, 0x75, 0x4c, 0x4f, 0x7d,
62 0xee, 0x4c, 0xa9, 0x5f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
63 0x01, // transaction count
64 0x02, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
65 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
66 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
67 0x01, 0x40, 0x9c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x22, 0x00, 0x20, 0xd1, 0xd9, 0x13, 0xa9,
68 0x76, 0x09, 0x05, 0xa3, 0x4d, 0x13, 0x5b, 0x69, 0xaa, 0xe7, 0x79, 0x71, 0xb9, 0x75, 0xa1, 0xd0,
69 0x77, 0xcb, 0xa2, 0xf6, 0x6a, 0x25, 0x37, 0x3a, 0xaf, 0xdc, 0x11, 0x09, 0x01, 0x00, 0x00, 0x00,
73 // The first transaction in the block is header (80 bytes) + transaction count (1 byte) into the block data.
74 const uint8_t channel_open_txid[] = {
75 0x02, 0xe0, 0x50, 0x05, 0x33, 0xd3, 0x29, 0x66, 0x0c, 0xb2, 0xcb, 0x1e, 0x7a, 0x4a, 0xc7, 0xc7,
76 0x8b, 0x02, 0x46, 0x7e, 0x30, 0x2c, 0xe6, 0x19, 0xce, 0x43, 0x3e, 0xdf, 0x43, 0x65, 0xae, 0xf9,
79 // Two blocks built on top of channel_open_block:
80 const uint8_t block_1[81] = {
81 0x01, 0x00, 0x00, 0x00, 0x0c, 0x7a, 0xc2, 0xdc, 0x08, 0xaf, 0x40, 0x7d, 0x58, 0x81, 0x9b, 0x44,
82 0xc7, 0xe0, 0x0f, 0x78, 0xc0, 0xd1, 0x01, 0xa2, 0x03, 0x16, 0x4a, 0x8d, 0x92, 0x66, 0x4e, 0xaf,
83 0x7f, 0xfc, 0x6e, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
84 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
85 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
86 0x00, // transaction count
88 const uint8_t block_2[81] = {
89 0x01, 0x00, 0x00, 0x00, 0x36, 0x0b, 0xf5, 0x46, 0x4a, 0xc7, 0x26, 0x4c, 0x4b, 0x36, 0xa6, 0x9d,
90 0x0e, 0xf0, 0x14, 0xfb, 0x8a, 0xcb, 0x20, 0x84, 0x18, 0xf3, 0xaa, 0x77, 0x32, 0x2d, 0xf7, 0x48,
91 0x62, 0x92, 0xb1, 0xb4, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
92 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
93 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
94 0x00, // transaction count
97 const LDKThirtyTwoBytes genesis_hash = { // We don't care particularly if this is "right"
98 .data = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1 }
101 void print_log(const void *this_arg, const LDKRecord *record) {
102 LDK::Str mod = Record_get_module_path(record);
103 LDK::Str str = Record_get_args(record);
104 printf("%p - %.*s:%d - %.*s\n", this_arg, (int)mod->len, mod->chars, Record_get_line(record), (int)str->len, str->chars);
107 uint32_t get_fee(const void *this_arg, LDKConfirmationTarget target) {
108 if (target == LDKConfirmationTarget_Background) {
113 // Note that we don't call _free() on target, but that's OK, its unitary
115 // We use the same fee estimator globally:
116 const LDKFeeEstimator fee_est {
118 .get_est_sat_per_1000_weight = get_fee,
122 static std::atomic_int num_txs_broadcasted(0);
123 void broadcast_tx(const void *this_arg, LDKTransaction tx) {
124 num_txs_broadcasted += 1;
126 Transaction_free(tx);
129 struct NodeMonitors {
131 std::vector<std::pair<LDK::OutPoint, LDK::ChannelMonitor>> mons;
134 void ConnectBlock(const uint8_t (*header)[80], uint32_t height, LDKCVec_C2Tuple_usizeTransactionZZ tx_data, LDKBroadcasterInterface broadcast, LDKFeeEstimator fee_est) {
135 std::unique_lock<std::mutex> l(mut);
136 for (auto& mon : mons) {
137 LDK::CVec_TransactionOutputsZ res = ChannelMonitor_block_connected(&mon.second, header, tx_data, height, broadcast, fee_est, *logger);
142 LDKCResult_NoneChannelMonitorUpdateErrZ add_channel_monitor(const void *this_arg, LDKOutPoint funding_txo_arg, LDKChannelMonitor monitor_arg) {
143 // First bind the args to C++ objects so they auto-free
144 LDK::ChannelMonitor mon(std::move(monitor_arg));
145 LDK::OutPoint funding_txo(std::move(funding_txo_arg));
147 NodeMonitors* arg = (NodeMonitors*) this_arg;
148 std::unique_lock<std::mutex> l(arg->mut);
150 arg->mons.push_back(std::make_pair(std::move(funding_txo), std::move(mon)));
151 return CResult_NoneChannelMonitorUpdateErrZ_ok();
153 static std::atomic_int mons_updated(0);
154 LDKCResult_NoneChannelMonitorUpdateErrZ update_channel_monitor(const void *this_arg, LDKOutPoint funding_txo_arg, LDKChannelMonitorUpdate monitor_arg) {
155 // First bind the args to C++ objects so they auto-free
156 LDK::ChannelMonitorUpdate update(std::move(monitor_arg));
157 LDK::OutPoint funding_txo(std::move(funding_txo_arg));
159 NodeMonitors* arg = (NodeMonitors*) this_arg;
160 std::unique_lock<std::mutex> l(arg->mut);
162 bool updated = false;
163 for (auto& mon : arg->mons) {
164 if (OutPoint_get_index(&mon.first) == OutPoint_get_index(&funding_txo) &&
165 !memcmp(OutPoint_get_txid(&mon.first), OutPoint_get_txid(&funding_txo), 32)) {
167 LDKBroadcasterInterface broadcaster = {
168 .broadcast_transaction = broadcast_tx,
170 LDK::CResult_NoneMonitorUpdateErrorZ res = ChannelMonitor_update_monitor(&mon.second, &update, &broadcaster, &fee_est, arg->logger);
171 assert(res->result_ok);
177 return CResult_NoneChannelMonitorUpdateErrZ_ok();
179 LDKCVec_MonitorEventZ monitors_pending_monitor_events(const void *this_arg) {
180 NodeMonitors* arg = (NodeMonitors*) this_arg;
181 std::unique_lock<std::mutex> l(arg->mut);
183 if (arg->mons.size() == 0) {
184 return LDKCVec_MonitorEventZ {
189 // We only ever actually have one channel per node, plus concatenating two
190 // Rust Vecs to each other from C++ will require a bit of effort.
191 assert(arg->mons.size() == 1);
192 return ChannelMonitor_get_and_clear_pending_monitor_events(&arg->mons[0].second);
197 std::vector<LDK::Event> events;
199 void handle_event(const void *this_arg, const LDKEvent *event) {
200 EventQueue* arg = (EventQueue*) this_arg;
201 arg->events.push_back(Event_clone(event));
205 class PeersConnection {
210 PeersConnection(LDK::ChannelManager& cm1, LDK::ChannelManager& cm2, LDK::PeerManager& net1, LDK::PeerManager& net2) {
211 node1_handler = init_socket_handling(&net1);
212 node2_handler = init_socket_handling(&net2);
214 struct sockaddr_in listen_addr;
215 listen_addr.sin_family = AF_INET;
216 listen_addr.sin_addr.s_addr = htonl((127 << 8*3) | 1);
217 listen_addr.sin_port = htons(10042);
218 assert(!socket_bind(node2_handler, (sockaddr*)&listen_addr, sizeof(listen_addr)));
220 assert(!socket_connect(node1_handler, ChannelManager_get_our_node_id(&cm2), (sockaddr*)&listen_addr, sizeof(listen_addr)));
223 // Wait for the initial handshakes to complete...
224 LDK::CVec_PublicKeyZ peers_1 = PeerManager_get_peer_node_ids(&net1);
225 LDK::CVec_PublicKeyZ peers_2 = PeerManager_get_peer_node_ids(&net2);
226 if (peers_1->datalen == 1 && peers_2->datalen == 1) { break; }
227 std::this_thread::yield();
230 // Connect twice, which should auto-disconnect, and is a good test of our disconnect pipeline
231 assert(!socket_connect(node1_handler, ChannelManager_get_our_node_id(&cm2), (sockaddr*)&listen_addr, sizeof(listen_addr)));
232 assert(!socket_connect(node1_handler, ChannelManager_get_our_node_id(&cm2), (sockaddr*)&listen_addr, sizeof(listen_addr)));
234 // Then disconnect the "main" connection, while another connection is being made.
235 PeerManager_disconnect_by_node_id(&net1, ChannelManager_get_our_node_id(&cm2), false);
236 assert(!socket_connect(node1_handler, ChannelManager_get_our_node_id(&cm2), (sockaddr*)&listen_addr, sizeof(listen_addr)));
238 // Wait for all our sockets to disconnect (making sure we disconnect any new connections)...
240 PeerManager_disconnect_by_node_id(&net1, ChannelManager_get_our_node_id(&cm2), false);
241 // Wait for the peers to disconnect...
242 LDK::CVec_PublicKeyZ peers_1 = PeerManager_get_peer_node_ids(&net1);
243 LDK::CVec_PublicKeyZ peers_2 = PeerManager_get_peer_node_ids(&net2);
244 if (peers_1->datalen == 0 && peers_2->datalen == 0) { break; }
245 std::this_thread::yield();
247 // Note that the above is somewhat race-y, as node 2 may still think its connected.
248 // Thus, make sure any connections are disconnected on its end as well.
249 PeerManager_disconnect_by_node_id(&net2, ChannelManager_get_our_node_id(&cm1), false);
251 // Finally make an actual connection and keep it this time
252 assert(!socket_connect(node1_handler, ChannelManager_get_our_node_id(&cm2), (sockaddr*)&listen_addr, sizeof(listen_addr)));
255 // Wait for the initial handshakes to complete...
256 LDK::CVec_PublicKeyZ peers_1 = PeerManager_get_peer_node_ids(&net1);
257 LDK::CVec_PublicKeyZ peers_2 = PeerManager_get_peer_node_ids(&net2);
258 if (peers_1->datalen == 1 && peers_2->datalen == 1) { break; }
259 std::this_thread::yield();
263 interrupt_socket_handling(node1_handler);
264 interrupt_socket_handling(node2_handler);
270 uintptr_t sock_send_data(void *this_arg, LDKu8slice data, bool resume_read) {
271 return write((int)((long)this_arg), data.data, data.datalen);
273 void sock_disconnect_socket(void *this_arg) {
274 close((int)((long)this_arg));
276 bool sock_eq(const void *this_arg, const LDKSocketDescriptor *other_arg) {
277 return this_arg == other_arg->this_arg;
279 uint64_t sock_hash(const void *this_arg) {
280 return (uint64_t)this_arg;
282 void sock_read_data_thread(int rdfd, LDKSocketDescriptor *peer_descriptor, LDKPeerManager *pm) {
283 unsigned char buf[1024];
287 while ((readlen = read(rdfd, buf, 1024)) > 0) {
288 data.datalen = readlen;
289 LDK::CResult_boolPeerHandleErrorZ res = PeerManager_read_event(&*pm, peer_descriptor, data);
290 if (!res->result_ok) {
291 peer_descriptor->disconnect_socket(peer_descriptor->this_arg);
294 PeerManager_process_events(pm);
296 PeerManager_socket_disconnected(&*pm, peer_descriptor);
299 class PeersConnection {
300 int pipefds_1_to_2[2];
301 int pipefds_2_to_1[2];
303 LDKSocketDescriptor sock1, sock2;
306 PeersConnection(LDK::ChannelManager& cm1, LDK::ChannelManager& cm2, LDK::PeerManager& net1, LDK::PeerManager& net2) {
307 assert(!pipe(pipefds_1_to_2));
308 assert(!pipe(pipefds_2_to_1));
310 sock1 = LDKSocketDescriptor {
311 .this_arg = (void*)(long)pipefds_1_to_2[1],
312 .send_data = sock_send_data,
313 .disconnect_socket = sock_disconnect_socket,
320 sock2 = LDKSocketDescriptor {
321 .this_arg = (void*)(long)pipefds_2_to_1[1],
322 .send_data = sock_send_data,
323 .disconnect_socket = sock_disconnect_socket,
330 t1 = std::thread(&sock_read_data_thread, pipefds_2_to_1[0], &sock1, &net1);
331 t2 = std::thread(&sock_read_data_thread, pipefds_1_to_2[0], &sock2, &net2);
333 // Note that we have to bind the result to a C++ class to make sure it gets free'd
334 LDK::CResult_CVec_u8ZPeerHandleErrorZ con_res = PeerManager_new_outbound_connection(&net1, ChannelManager_get_our_node_id(&cm2), sock1);
335 assert(con_res->result_ok);
336 LDK::CResult_NonePeerHandleErrorZ con_res2 = PeerManager_new_inbound_connection(&net2, sock2);
337 assert(con_res2->result_ok);
339 auto writelen = write(pipefds_1_to_2[1], con_res->contents.result->data, con_res->contents.result->datalen);
340 assert(writelen > 0 && uint64_t(writelen) == con_res->contents.result->datalen);
343 // Wait for the initial handshakes to complete...
344 LDK::CVec_PublicKeyZ peers_1 = PeerManager_get_peer_node_ids(&net1);
345 LDK::CVec_PublicKeyZ peers_2 = PeerManager_get_peer_node_ids(&net2);
346 if (peers_1->datalen == 1 && peers_2->datalen ==1) { break; }
347 std::this_thread::yield();
352 close(pipefds_1_to_2[0]);
353 close(pipefds_2_to_1[0]);
354 close(pipefds_1_to_2[1]);
355 close(pipefds_2_to_1[1]);
362 struct CustomMsgQueue {
363 std::vector<LDK::Type> msgs;
366 uint16_t custom_msg_type_id(const void *this_arg) {
369 LDKCVec_u8Z custom_msg_bytes(const void *this_arg) {
370 uint8_t *bytes = (uint8_t *) malloc(1024);
371 memset(bytes, 42, 1024);
373 .data = bytes, .datalen = 1024
376 LDKStr custom_msg_debug(const void *this_arg) {
378 .chars = NULL, .len = 0, .chars_is_owned = false
382 LDKCResult_COption_TypeZDecodeErrorZ read_custom_message(const void* this_arg, uint16_t type_id, LDKu8slice buf) {
383 assert(type_id == 8888);
384 assert(buf.datalen == 1024);
386 memset(cmp, 42, 1024);
387 assert(!memcmp(cmp, buf.data, 1024));
388 return CResult_COption_TypeZDecodeErrorZ_ok(COption_TypeZ_some(LDKType {
390 .type_id = custom_msg_type_id,
391 .debug_str = custom_msg_debug,
396 LDKCResult_NoneLightningErrorZ handle_custom_message(const void* this_arg, struct LDKType msg, struct LDKPublicKey _sender_node_id) {
397 CustomMsgQueue* arg = (CustomMsgQueue*) this_arg;
398 arg->msgs.push_back(std::move(msg));
399 return CResult_NoneLightningErrorZ_ok();
401 LDKCVec_C2Tuple_PublicKeyTypeZZ never_send_custom_msgs(const void* this_arg) {
402 return LDKCVec_C2Tuple_PublicKeyTypeZZ {
403 .data = NULL, .datalen = 0
407 LDKCVec_C2Tuple_PublicKeyTypeZZ create_custom_msg(const void* this_arg) {
408 const LDKPublicKey *counterparty_node_id = (const LDKPublicKey *)this_arg;
409 LDKCVec_C2Tuple_PublicKeyTypeZZ ret = {
410 .data = ((LDKC2Tuple_PublicKeyTypeZ*)malloc(sizeof(LDKC2Tuple_PublicKeyTypeZ))),
413 ret.data[0].a = *counterparty_node_id;
414 ret.data[0].b = LDKType {
416 .type_id = custom_msg_type_id,
417 .debug_str = custom_msg_debug,
418 .write = custom_msg_bytes,
424 uint64_t get_chan_score(const void *this_arg, uint64_t scid, const LDKNodeId *src, const LDKNodeId *dst) { return 42; }
426 struct CustomRouteFinderParams {
428 LDKNetworkGraph *graph_ref;
430 struct LDKCResult_RouteLightningErrorZ custom_find_route(const void *this_arg, struct LDKPublicKey payer, const struct LDKRouteParameters *NONNULL_PTR route_params, struct LDKCVec_ChannelDetailsZ *first_hops, const struct LDKScore *NONNULL_PTR scorer) {
431 const struct CustomRouteFinderParams *params = (struct CustomRouteFinderParams *)this_arg;
432 assert(first_hops->datalen == 1);
433 assert(ChannelDetails_get_is_usable(&first_hops->data[0]));
434 return find_route(payer, route_params, params->graph_ref, first_hops, *params->logger, scorer);
438 uint8_t channel_open_header[80];
439 uint8_t header_1[80];
440 uint8_t header_2[80];
441 memcpy(channel_open_header, channel_open_block, 80);
442 memcpy(header_1, block_1, 80);
443 memcpy(header_2, block_2, 80);
445 LDKPublicKey null_pk;
446 memset(&null_pk, 0, sizeof(null_pk));
448 LDKThirtyTwoBytes random_bytes;
449 LDKThirtyTwoBytes chain_tip;
450 memset(&chain_tip, 0, sizeof(chain_tip)); // channel_open_header's prev_blockhash is all-0s
452 LDKNetwork network = LDKNetwork_Testnet;
454 // Trait implementations:
455 LDKBroadcasterInterface broadcast {
457 .broadcast_transaction = broadcast_tx,
461 // Instantiate classes for the nodes that don't get reloaded on a ser-des reload
463 .this_arg = (void*)1,
469 mons1.logger = &logger1;
472 .watch_channel = add_channel_monitor,
473 .update_channel = update_channel_monitor,
474 .release_pending_monitor_events = monitors_pending_monitor_events,
478 LDK::NetworkGraph net_graph1 = NetworkGraph_new(genesis_hash);
479 LDK::NetGraphMsgHandler graph_msg_handler1 = NetGraphMsgHandler_new(&net_graph1, COption_AccessZ_none(), logger1);
480 LDKSecretKey node_secret1;
483 .this_arg = (void*)2,
489 mons2.logger = &logger2;
492 .watch_channel = add_channel_monitor,
493 .update_channel = update_channel_monitor,
494 .release_pending_monitor_events = monitors_pending_monitor_events,
498 LDK::NetworkGraph net_graph2 = NetworkGraph_new(genesis_hash);
499 LDK::NetGraphMsgHandler graph_msg_handler2 = NetGraphMsgHandler_new(&net_graph2, COption_AccessZ_none(), logger2);
500 LDKSecretKey node_secret2;
502 LDK::CVec_u8Z cm1_ser = LDKCVec_u8Z {}; // ChannelManager 1 serialization at the end of the ser-des scope
503 LDK::CVec_u8Z cm2_ser = LDKCVec_u8Z {}; // ChannelManager 2 serialization at the end of the ser-des scope
505 { // Scope for the ser-des reload
506 // Instantiate classes for node 1:
507 uint8_t node_seed[32];
508 memset(&node_seed, 0, 32);
509 LDK::KeysManager keys1 = KeysManager_new(&node_seed, 0, 0);
510 LDK::KeysInterface keys_source1 = KeysManager_as_KeysInterface(&keys1);
511 node_secret1 = keys_source1->get_node_secret(keys_source1->this_arg);
513 LDK::ChannelManager cm1 = ChannelManager_new(fee_est, mon1, broadcast, logger1, KeysManager_as_KeysInterface(&keys1), UserConfig_default(), ChainParameters_new(network, BestBlock_new(chain_tip, 0)));
515 LDK::CVec_ChannelDetailsZ channels = ChannelManager_list_channels(&cm1);
516 assert(channels->datalen == 0);
518 LDK::MessageHandler msg_handler1 = MessageHandler_new(ChannelManager_as_ChannelMessageHandler(&cm1), NetGraphMsgHandler_as_RoutingMessageHandler(&graph_msg_handler1));
520 LDK::IgnoringMessageHandler ignoring_handler1 = IgnoringMessageHandler_new();
521 LDK::CustomMessageHandler custom_msg_handler1 = IgnoringMessageHandler_as_CustomMessageHandler(&ignoring_handler1);
523 random_bytes = keys_source1->get_secure_random_bytes(keys_source1->this_arg);
524 LDK::PeerManager net1 = PeerManager_new(std::move(msg_handler1), node_secret1, &random_bytes.data, logger1, std::move(custom_msg_handler1));
526 // Demo getting a channel key and check that its returning real pubkeys:
527 LDK::Sign chan_signer1 = keys_source1->get_channel_signer(keys_source1->this_arg, false, 42);
528 chan_signer1->BaseSign.set_pubkeys(&chan_signer1->BaseSign); // Make sure pubkeys is defined
529 LDKPublicKey payment_point = ChannelPublicKeys_get_payment_point(&chan_signer1->BaseSign.pubkeys);
530 assert(memcmp(&payment_point, &null_pk, sizeof(null_pk)));
532 // Instantiate classes for node 2:
533 memset(&node_seed, 1, 32);
534 LDK::KeysManager keys2 = KeysManager_new(&node_seed, 0, 0);
535 LDK::KeysInterface keys_source2 = KeysManager_as_KeysInterface(&keys2);
536 node_secret2 = keys_source2->get_node_secret(keys_source2->this_arg);
538 LDK::ChannelHandshakeConfig handshake_config2 = ChannelHandshakeConfig_default();
539 ChannelHandshakeConfig_set_minimum_depth(&handshake_config2, 2);
540 LDK::UserConfig config2 = UserConfig_default();
541 UserConfig_set_own_channel_config(&config2, std::move(handshake_config2));
543 LDK::ChannelManager cm2 = ChannelManager_new(fee_est, mon2, broadcast, logger2, KeysManager_as_KeysInterface(&keys2), std::move(config2), ChainParameters_new(network, BestBlock_new(chain_tip, 0)));
545 LDK::CVec_ChannelDetailsZ channels2 = ChannelManager_list_channels(&cm2);
546 assert(channels2->datalen == 0);
548 LDK::RoutingMessageHandler net_msgs2 = NetGraphMsgHandler_as_RoutingMessageHandler(&graph_msg_handler2);
549 LDK::CResult_ChannelAnnouncementDecodeErrorZ chan_ann = ChannelAnnouncement_read(LDKu8slice { .data = valid_node_announcement, .datalen = sizeof(valid_node_announcement) });
550 assert(chan_ann->result_ok);
551 LDK::CResult_boolLightningErrorZ ann_res = net_msgs2->handle_channel_announcement(net_msgs2->this_arg, chan_ann->contents.result);
552 assert(ann_res->result_ok);
554 LDK::MessageHandler msg_handler2 = MessageHandler_new(ChannelManager_as_ChannelMessageHandler(&cm2), std::move(net_msgs2));
556 LDK::IgnoringMessageHandler ignoring_handler2 = IgnoringMessageHandler_new();
557 LDK::CustomMessageHandler custom_msg_handler2 = IgnoringMessageHandler_as_CustomMessageHandler(&ignoring_handler2);
559 random_bytes = keys_source2->get_secure_random_bytes(keys_source2->this_arg);
560 LDK::PeerManager net2 = PeerManager_new(std::move(msg_handler2), node_secret2, &random_bytes.data, logger2, std::move(custom_msg_handler2));
562 // Open a connection!
563 PeersConnection conn(cm1, cm2, net1, net2);
565 // Note that we have to bind the result to a C++ class to make sure it gets free'd
566 LDK::CResult__u832APIErrorZ res = ChannelManager_create_channel(&cm1, ChannelManager_get_our_node_id(&cm2), 40000, 1000, 42, UserConfig_default());
567 assert(res->result_ok);
568 PeerManager_process_events(&net1);
570 LDK::CVec_ChannelDetailsZ new_channels = ChannelManager_list_channels(&cm1);
571 assert(new_channels->datalen == 1);
572 LDK::ChannelCounterparty new_channels_counterparty = ChannelDetails_get_counterparty(&new_channels->data[0]);
573 LDKPublicKey chan_open_pk = ChannelCounterparty_get_node_id(&new_channels_counterparty);
574 assert(!memcmp(chan_open_pk.compressed_form, ChannelManager_get_our_node_id(&cm2).compressed_form, 33));
577 LDK::CVec_ChannelDetailsZ new_channels_2 = ChannelManager_list_channels(&cm2);
578 if (new_channels_2->datalen == 1) {
579 // Sample getting our counterparty's init features (which used to be hard to do without a memory leak):
580 LDK::ChannelCounterparty new_channels_2_counterparty = ChannelDetails_get_counterparty(&new_channels_2->data[0]);
581 const LDK::InitFeatures init_feats = ChannelCounterparty_get_features(&new_channels_2_counterparty);
582 assert(init_feats->inner != NULL);
585 std::this_thread::yield();
588 LDKEventsProvider ev1 = ChannelManager_as_EventsProvider(&cm1);
591 LDKEventHandler handler = { .this_arg = &queue, .handle_event = handle_event, .free = NULL };
592 ev1.process_pending_events(ev1.this_arg, handler);
593 if (queue.events.size() == 1) {
594 assert(queue.events[0]->tag == LDKEvent_FundingGenerationReady);
595 assert(queue.events[0]->funding_generation_ready.user_channel_id == 42);
596 assert(queue.events[0]->funding_generation_ready.channel_value_satoshis == 40000);
597 assert(queue.events[0]->funding_generation_ready.output_script.datalen == 34);
598 assert(!memcmp(queue.events[0]->funding_generation_ready.output_script.data, channel_open_block + 58 + 81, 34));
599 LDKTransaction funding_transaction { .data = const_cast<uint8_t*>(channel_open_block + 81), .datalen = sizeof(channel_open_block) - 81, .data_is_owned = false };
601 LDK::CResult_NoneAPIErrorZ fund_res = ChannelManager_funding_transaction_generated(&cm1, &queue.events[0]->funding_generation_ready.temporary_channel_id.data, funding_transaction);
602 assert(fund_res->result_ok);
605 std::this_thread::yield();
608 // We observe when the funding signed messages have been exchanged by
609 // waiting for two monitors to be registered.
610 assert(num_txs_broadcasted == 0);
611 PeerManager_process_events(&net1);
612 while (num_txs_broadcasted != 1) {
613 std::this_thread::yield();
616 LDK::Listen listener1 = ChannelManager_as_Listen(&cm1);
617 listener1->block_connected(listener1->this_arg, LDKu8slice { .data = channel_open_block, .datalen = sizeof(channel_open_block) }, 1);
619 LDK::Listen listener2 = ChannelManager_as_Listen(&cm2);
620 listener2->block_connected(listener2->this_arg, LDKu8slice { .data = channel_open_block, .datalen = sizeof(channel_open_block) }, 1);
622 LDKCVec_C2Tuple_usizeTransactionZZ txdata { .data = (LDKC2Tuple_usizeTransactionZ*)malloc(sizeof(LDKC2Tuple_usizeTransactionZ)), .datalen = 1 };
623 *txdata.data = C2Tuple_usizeTransactionZ_new(0, LDKTransaction { .data = (uint8_t*)channel_open_block + 81, .datalen = sizeof(channel_open_block) - 81, .data_is_owned = false });
624 mons1.ConnectBlock(&channel_open_header, 1, txdata, broadcast, fee_est);
626 txdata = LDKCVec_C2Tuple_usizeTransactionZZ { .data = (LDKC2Tuple_usizeTransactionZ*)malloc(sizeof(LDKC2Tuple_usizeTransactionZ)), .datalen = 1 };
627 *txdata.data = C2Tuple_usizeTransactionZ_new(0, LDKTransaction { .data = (uint8_t*)channel_open_block + 81, .datalen = sizeof(channel_open_block) - 81, .data_is_owned = false });
628 mons2.ConnectBlock(&channel_open_header, 1, txdata, broadcast, fee_est);
630 listener1->block_connected(listener1->this_arg, LDKu8slice { .data = block_1, .datalen = sizeof(block_1) }, 2);
631 listener2->block_connected(listener2->this_arg, LDKu8slice { .data = block_1, .datalen = sizeof(block_1) }, 2);
632 mons1.ConnectBlock(&header_1, 2, LDKCVec_C2Tuple_usizeTransactionZZ { .data = NULL, .datalen = 0 }, broadcast, fee_est);
633 mons2.ConnectBlock(&header_1, 2, LDKCVec_C2Tuple_usizeTransactionZZ { .data = NULL, .datalen = 0 }, broadcast, fee_est);
635 listener1->block_connected(listener1->this_arg, LDKu8slice { .data = block_2, .datalen = sizeof(block_1) }, 3);
636 listener2->block_connected(listener2->this_arg, LDKu8slice { .data = block_2, .datalen = sizeof(block_1) }, 3);
637 mons1.ConnectBlock(&header_2, 3, LDKCVec_C2Tuple_usizeTransactionZZ { .data = NULL, .datalen = 0 }, broadcast, fee_est);
638 mons2.ConnectBlock(&header_2, 3, LDKCVec_C2Tuple_usizeTransactionZZ { .data = NULL, .datalen = 0 }, broadcast, fee_est);
640 PeerManager_process_events(&net1);
641 PeerManager_process_events(&net2);
643 // Now send funds from 1 to 2!
644 uint64_t channel_scid;
646 LDK::CVec_ChannelDetailsZ outbound_channels = ChannelManager_list_usable_channels(&cm1);
647 if (outbound_channels->datalen == 1) {
648 const LDKChannelDetails *channel = &outbound_channels->data[0];
649 LDK::ChannelCounterparty counterparty = ChannelDetails_get_counterparty(channel);
650 // Note that the channel ID is the same as the channel txid reversed as the output index is 0
651 uint8_t expected_chan_id[32];
652 for (int i = 0; i < 32; i++) { expected_chan_id[i] = channel_open_txid[31-i]; }
653 assert(!memcmp(ChannelDetails_get_channel_id(channel), expected_chan_id, 32));
655 ChannelCounterparty_get_node_id(&counterparty).compressed_form,
656 ChannelManager_get_our_node_id(&cm2).compressed_form, 33));
657 assert(ChannelDetails_get_channel_value_satoshis(channel) == 40000);
658 // We opened the channel with 1000 push_msat:
659 assert(ChannelDetails_get_outbound_capacity_msat(channel) ==
660 40000*1000 - 1000 - 1000 * ChannelCounterparty_get_unspendable_punishment_reserve(&counterparty));
661 int64_t inbound_capacity = ((int64_t)1000) - ChannelCounterparty_get_unspendable_punishment_reserve(&counterparty);
662 if (inbound_capacity < 0) inbound_capacity = 0;
663 assert(ChannelDetails_get_inbound_capacity_msat(channel) == (uint64_t)inbound_capacity);
664 assert(ChannelDetails_get_is_usable(channel));
665 LDK::COption_u64Z scid_opt = ChannelDetails_get_short_channel_id(channel);
666 assert(scid_opt->some);
667 channel_scid = scid_opt->some;
670 std::this_thread::yield();
673 LDKCOption_u64Z min_value = {
674 .tag = LDKCOption_u64Z_Some,
677 LDK::CResult_InvoiceSignOrCreationErrorZ invoice = create_invoice_from_channelmanager(&cm2,
678 KeysManager_as_KeysInterface(&keys2),
679 LDKCurrency_Bitcoin, min_value,
681 .chars = (const uint8_t *)"Invoice Description",
682 .len = strlen("Invoice Description"),
683 .chars_is_owned = false
685 assert(invoice->result_ok);
686 LDKThirtyTwoBytes payment_hash;
687 memcpy(payment_hash.data, Invoice_payment_hash(invoice->contents.result), 32);
690 LDK::CVec_ChannelDetailsZ outbound_channels = ChannelManager_list_usable_channels(&cm1);
691 LDK::Score chan_scorer = LDKScore {
692 .this_arg = NULL, .channel_penalty_msat = get_chan_score, .free = NULL
694 LDK::RouteParameters route_params = RouteParameters_new(Payee_new(
695 ChannelManager_get_our_node_id(&cm2), LDKInvoiceFeatures {
696 .inner = NULL, .is_owned = false
697 }, Invoice_route_hints(invoice->contents.result), COption_u64Z_none()),
698 5000, Invoice_min_final_cltv_expiry(invoice->contents.result));
699 LDK::CResult_RouteLightningErrorZ route = find_route(ChannelManager_get_our_node_id(&cm1), &route_params, &net_graph2, &outbound_channels, logger1, &chan_scorer);
700 assert(route->result_ok);
701 LDK::CVec_CVec_RouteHopZZ paths = Route_get_paths(route->contents.result);
702 assert(paths->datalen == 1);
703 assert(paths->data[0].datalen == 1);
704 assert(!memcmp(RouteHop_get_pubkey(&paths->data[0].data[0]).compressed_form,
705 ChannelManager_get_our_node_id(&cm2).compressed_form, 33));
706 assert(RouteHop_get_short_channel_id(&paths->data[0].data[0]) == channel_scid);
707 LDKThirtyTwoBytes payment_secret;
708 memcpy(payment_secret.data, Invoice_payment_secret(invoice->contents.result), 32);
709 LDK::CResult_PaymentIdPaymentSendFailureZ send_res = ChannelManager_send_payment(&cm1, route->contents.result, payment_hash, payment_secret);
710 assert(send_res->result_ok);
714 PeerManager_process_events(&net1);
715 while (mons_updated != 4) {
716 std::this_thread::yield();
719 // Check that we received the payment!
720 LDK::EventsProvider ev2 = ChannelManager_as_EventsProvider(&cm2);
723 LDKEventHandler handler = { .this_arg = &queue, .handle_event = handle_event, .free = NULL };
724 ev2.process_pending_events(handler);
725 if (queue.events.size() == 1) {
726 assert(queue.events[0]->tag == LDKEvent_PendingHTLCsForwardable);
729 std::this_thread::yield();
731 ChannelManager_process_pending_htlc_forwards(&cm2);
732 PeerManager_process_events(&net2);
735 LDKThirtyTwoBytes payment_preimage;
738 LDKEventHandler handler = { .this_arg = &queue, .handle_event = handle_event, .free = NULL };
739 ev2.process_pending_events(handler);
740 assert(queue.events.size() == 1);
741 assert(queue.events[0]->tag == LDKEvent_PaymentReceived);
742 assert(!memcmp(queue.events[0]->payment_received.payment_hash.data, payment_hash.data, 32));
743 assert(queue.events[0]->payment_received.purpose.tag == LDKPaymentPurpose_InvoicePayment);
744 assert(!memcmp(queue.events[0]->payment_received.purpose.invoice_payment.payment_secret.data,
745 Invoice_payment_secret(invoice->contents.result), 32));
746 assert(queue.events[0]->payment_received.amt == 5000);
747 memcpy(payment_preimage.data, queue.events[0]->payment_received.purpose.invoice_payment.payment_preimage.data, 32);
748 assert(ChannelManager_claim_funds(&cm2, payment_preimage));
750 PeerManager_process_events(&net2);
751 // Wait until we've passed through a full set of monitor updates (ie new preimage + CS/RAA messages)
752 while (mons_updated != 5) {
753 std::this_thread::yield();
757 LDKEventHandler handler = { .this_arg = &queue, .handle_event = handle_event, .free = NULL };
758 ev1.process_pending_events(ev1.this_arg, handler);
759 assert(queue.events.size() == 1);
760 assert(queue.events[0]->tag == LDKEvent_PaymentSent);
761 assert(!memcmp(queue.events[0]->payment_sent.payment_preimage.data, payment_preimage.data, 32));
766 cm1_ser = ChannelManager_write(&cm1);
767 cm2_ser = ChannelManager_write(&cm2);
770 LDK::CVec_ChannelMonitorZ mons_list1 = LDKCVec_ChannelMonitorZ { .data = (LDKChannelMonitor*)malloc(sizeof(LDKChannelMonitor)), .datalen = 1 };
771 assert(mons1.mons.size() == 1);
772 mons_list1->data[0] = *& std::get<1>(mons1.mons[0]); // Note that we need a reference, thus need a raw clone here, which *& does.
773 mons_list1->data[0].is_owned = false; // XXX: God this sucks
774 uint8_t node_seed[32];
775 memset(&node_seed, 0, 32);
776 LDK::KeysManager keys1 = KeysManager_new(&node_seed, 1, 0);
777 LDK::KeysInterface keys_source1 = KeysManager_as_KeysInterface(&keys1);
779 LDK::ChannelManagerReadArgs cm1_args = ChannelManagerReadArgs_new(KeysManager_as_KeysInterface(&keys1), fee_est, mon1, broadcast, logger1, UserConfig_default(), std::move(mons_list1));
780 LDK::CResult_C2Tuple_BlockHashChannelManagerZDecodeErrorZ cm1_read =
781 C2Tuple_BlockHashChannelManagerZ_read(LDKu8slice { .data = cm1_ser->data, .datalen = cm1_ser -> datalen}, std::move(cm1_args));
782 assert(cm1_read->result_ok);
783 LDK::ChannelManager cm1(std::move(cm1_read->contents.result->b));
785 LDK::CVec_ChannelMonitorZ mons_list2 = LDKCVec_ChannelMonitorZ { .data = (LDKChannelMonitor*)malloc(sizeof(LDKChannelMonitor)), .datalen = 1 };
786 assert(mons2.mons.size() == 1);
787 mons_list2->data[0] = *& std::get<1>(mons2.mons[0]); // Note that we need a reference, thus need a raw clone here, which *& does.
788 mons_list2->data[0].is_owned = false; // XXX: God this sucks
789 memset(&node_seed, 1, 32);
790 LDK::KeysManager keys2 = KeysManager_new(&node_seed, 1, 0);
792 LDK::ChannelManagerReadArgs cm2_args = ChannelManagerReadArgs_new(KeysManager_as_KeysInterface(&keys2), fee_est, mon2, broadcast, logger2, UserConfig_default(), std::move(mons_list2));
793 LDK::CResult_C2Tuple_BlockHashChannelManagerZDecodeErrorZ cm2_read =
794 C2Tuple_BlockHashChannelManagerZ_read(LDKu8slice { .data = cm2_ser->data, .datalen = cm2_ser -> datalen}, std::move(cm2_args));
795 assert(cm2_read->result_ok);
796 LDK::ChannelManager cm2(std::move(cm2_read->contents.result->b));
798 // Attempt to close the channel...
800 for (int i = 0; i < 32; i++) { chan_id[i] = channel_open_txid[31-i]; }
801 LDK::CResult_NoneAPIErrorZ close_res = ChannelManager_close_channel(&cm1, &chan_id);
802 assert(!close_res->result_ok); // Note that we can't close while disconnected!
804 // Open a connection!
805 LDK::MessageHandler msg_handler1 = MessageHandler_new(ChannelManager_as_ChannelMessageHandler(&cm1), NetGraphMsgHandler_as_RoutingMessageHandler(&graph_msg_handler1));
806 random_bytes = keys_source1->get_secure_random_bytes(keys_source1->this_arg);
808 LDKPublicKey chan_2_node_id = ChannelManager_get_our_node_id(&cm2);
809 LDKCustomMessageHandler custom_msg_handler1 = {
810 .this_arg = &chan_2_node_id,
811 .handle_custom_message = NULL, // We only create custom messages, not handle them
812 .get_and_clear_pending_msg = create_custom_msg,
813 .CustomMessageReader = LDKCustomMessageReader {
815 .read = read_custom_message,
820 LDK::PeerManager net1 = PeerManager_new(std::move(msg_handler1), node_secret1, &random_bytes.data, logger1, std::move(custom_msg_handler1));
822 LDK::MessageHandler msg_handler2 = MessageHandler_new(ChannelManager_as_ChannelMessageHandler(&cm2), NetGraphMsgHandler_as_RoutingMessageHandler(&graph_msg_handler2));
823 CustomMsgQueue peer_2_custom_messages;
824 LDKCustomMessageHandler custom_msg_handler2 = {
825 .this_arg = &peer_2_custom_messages,
826 .handle_custom_message = handle_custom_message,
827 .get_and_clear_pending_msg = never_send_custom_msgs,
828 .CustomMessageReader = LDKCustomMessageReader {
830 .read = read_custom_message,
835 random_bytes = keys_source1->get_secure_random_bytes(keys_source1->this_arg);
836 LDK::PeerManager net2 = PeerManager_new(std::move(msg_handler2), node_secret2, &random_bytes.data, logger2, std::move(custom_msg_handler2));
838 PeersConnection conn(cm1, cm2, net1, net2);
841 // Wait for the channels to be considered up once the reestablish messages are processed
842 LDK::CVec_ChannelDetailsZ outbound_channels = ChannelManager_list_usable_channels(&cm1);
843 if (outbound_channels->datalen == 1) {
848 // Send another payment, this time via the InvoicePayer
849 struct CustomRouteFinderParams router_params = {
851 .graph_ref = &net_graph1,
853 LDKRouter sending_router = {
854 .this_arg = &router_params,
855 .find_route = custom_find_route,
858 LDK::Scorer scorer = Scorer_default();
859 LDK::LockableScore scorer_mtx = LockableScore_new(Scorer_as_Score(&scorer));
861 LDKEventHandler handler1 = { .this_arg = &queue1, .handle_event = handle_event, .free = NULL };
862 LDK::InvoicePayer payer = InvoicePayer_new(ChannelManager_as_Payer(&cm1), sending_router, &scorer_mtx, logger1, handler1, RetryAttempts_new(0));
864 LDK::CResult_InvoiceSignOrCreationErrorZ invoice_res2 = create_invoice_from_channelmanager(&cm2,
865 KeysManager_as_KeysInterface(&keys2),
866 LDKCurrency_Bitcoin, COption_u64Z_some(10000),
868 .chars = (const uint8_t *)"Invoice 2 Description",
869 .len = strlen("Invoice 2 Description"),
870 .chars_is_owned = false
872 assert(invoice_res2->result_ok);
873 const LDKInvoice *invoice2 = invoice_res2->contents.result;
874 LDK::CResult_PaymentIdPaymentErrorZ invoice_pay_res = InvoicePayer_pay_invoice(&payer, invoice2);
875 assert(invoice_pay_res->result_ok);
876 PeerManager_process_events(&net1);
878 // Check that we received the payment!
881 LDKEventHandler handler2 = { .this_arg = &queue2, .handle_event = handle_event, .free = NULL };
882 LDK::EventsProvider ev2 = ChannelManager_as_EventsProvider(&cm2);
883 ev2.process_pending_events(handler2);
884 if (queue2.events.size() == 1) {
885 assert(queue2.events[0]->tag == LDKEvent_PendingHTLCsForwardable);
888 std::this_thread::yield();
890 ChannelManager_process_pending_htlc_forwards(&cm2);
891 PeerManager_process_events(&net2);
895 LDKEventHandler handler2 = { .this_arg = &queue2, .handle_event = handle_event, .free = NULL };
896 LDK::EventsProvider ev2 = ChannelManager_as_EventsProvider(&cm2);
897 ev2.process_pending_events(handler2);
898 if (queue2.events.size() == 1) {
899 assert(queue2.events[0]->tag == LDKEvent_PaymentReceived);
900 const struct LDKEvent_LDKPaymentReceived_Body *event_data = &queue2.events[0]->payment_received;
901 assert(!memcmp(event_data->payment_hash.data, Invoice_payment_hash(invoice2), 32));
902 assert(event_data->purpose.tag == LDKPaymentPurpose_InvoicePayment);
903 assert(!memcmp(event_data->purpose.invoice_payment.payment_secret.data,
904 Invoice_payment_secret(invoice2), 32));
905 assert(event_data->amt == 10000);
906 assert(ChannelManager_claim_funds(&cm2, event_data->purpose.invoice_payment.payment_preimage));
909 std::this_thread::yield();
912 while (queue1.events.size() == 0) {
913 PeerManager_process_events(&net2);
914 PeerManager_process_events(&net1);
916 LDK::EventsProvider ev1 = ChannelManager_as_EventsProvider(&cm1);
917 LDK::EventHandler evh1 = InvoicePayer_as_EventHandler(&payer);
918 ev1.process_pending_events(std::move(evh1));
920 assert(queue1.events.size() == 1);
921 assert(queue1.events[0]->tag == LDKEvent_PaymentSent);
923 // Actually close the channel
924 num_txs_broadcasted = 0;
925 close_res = ChannelManager_close_channel(&cm1, &chan_id);
926 assert(close_res->result_ok);
927 PeerManager_process_events(&net1);
928 while (num_txs_broadcasted != 2) {
929 std::this_thread::yield();
931 LDK::CVec_ChannelDetailsZ chans_after_close1 = ChannelManager_list_channels(&cm1);
932 assert(chans_after_close1->datalen == 0);
933 LDK::CVec_ChannelDetailsZ chans_after_close2 = ChannelManager_list_channels(&cm2);
934 assert(chans_after_close2->datalen == 0);
938 assert(peer_2_custom_messages.msgs.size() != 0);
940 // Few extra random tests:
943 LDKThirtyTwoBytes kdiv_params;
944 memset(&kdiv_params, 43, 32);
945 LDK::InMemorySigner signer = InMemorySigner_new(sk, sk, sk, sk, sk, random_bytes, 42, kdiv_params);