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_NoneNoneZ 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, uint64_t htlc_amt,
425 LDKCOption_u64Z chan_capacity, const LDKNodeId *src, const LDKNodeId *dst) {
426 LDK::COption_u64Z _capacity(std::move(chan_capacity));
430 struct CustomRouteFinderParams {
432 LDKNetworkGraph *graph_ref;
434 struct LDKCResult_RouteLightningErrorZ custom_find_route(const void *this_arg, struct LDKPublicKey payer, const struct LDKRouteParameters *NONNULL_PTR route_params, const uint8_t (*payment_hash)[32], struct LDKCVec_ChannelDetailsZ *first_hops, const struct LDKScore *NONNULL_PTR scorer) {
435 const struct CustomRouteFinderParams *params = (struct CustomRouteFinderParams *)this_arg;
436 assert(first_hops->datalen == 1);
437 assert(ChannelDetails_get_is_usable(&first_hops->data[0]));
438 return find_route(payer, route_params, params->graph_ref, first_hops, *params->logger, scorer);
442 uint8_t channel_open_header[80];
443 uint8_t header_1[80];
444 uint8_t header_2[80];
445 memcpy(channel_open_header, channel_open_block, 80);
446 memcpy(header_1, block_1, 80);
447 memcpy(header_2, block_2, 80);
449 LDKPublicKey null_pk;
450 memset(&null_pk, 0, sizeof(null_pk));
452 LDKThirtyTwoBytes random_bytes;
453 LDKThirtyTwoBytes chain_tip;
454 memset(&chain_tip, 0, sizeof(chain_tip)); // channel_open_header's prev_blockhash is all-0s
456 LDKNetwork network = LDKNetwork_Testnet;
458 // Trait implementations:
459 LDKBroadcasterInterface broadcast {
461 .broadcast_transaction = broadcast_tx,
465 // Instantiate classes for the nodes that don't get reloaded on a ser-des reload
467 .this_arg = (void*)1,
473 mons1.logger = &logger1;
476 .watch_channel = add_channel_monitor,
477 .update_channel = update_channel_monitor,
478 .release_pending_monitor_events = monitors_pending_monitor_events,
482 LDK::NetworkGraph net_graph1 = NetworkGraph_new(genesis_hash);
483 LDK::NetGraphMsgHandler graph_msg_handler1 = NetGraphMsgHandler_new(&net_graph1, COption_AccessZ_none(), logger1);
484 LDKSecretKey node_secret1;
487 .this_arg = (void*)2,
493 mons2.logger = &logger2;
496 .watch_channel = add_channel_monitor,
497 .update_channel = update_channel_monitor,
498 .release_pending_monitor_events = monitors_pending_monitor_events,
502 LDK::NetworkGraph net_graph2 = NetworkGraph_new(genesis_hash);
503 LDK::NetGraphMsgHandler graph_msg_handler2 = NetGraphMsgHandler_new(&net_graph2, COption_AccessZ_none(), logger2);
504 LDKSecretKey node_secret2;
506 LDK::CVec_u8Z cm1_ser = LDKCVec_u8Z {}; // ChannelManager 1 serialization at the end of the ser-des scope
507 LDK::CVec_u8Z cm2_ser = LDKCVec_u8Z {}; // ChannelManager 2 serialization at the end of the ser-des scope
509 { // Scope for the ser-des reload
510 // Instantiate classes for node 1:
511 uint8_t node_seed[32];
512 memset(&node_seed, 0, 32);
513 LDK::KeysManager keys1 = KeysManager_new(&node_seed, 0, 0);
514 LDK::KeysInterface keys_source1 = KeysManager_as_KeysInterface(&keys1);
515 node_secret1 = keys_source1->get_node_secret(keys_source1->this_arg);
517 LDK::ChannelManager cm1 = ChannelManager_new(fee_est, mon1, broadcast, logger1, KeysManager_as_KeysInterface(&keys1), UserConfig_default(), ChainParameters_new(network, BestBlock_new(chain_tip, 0)));
519 LDK::CVec_ChannelDetailsZ channels = ChannelManager_list_channels(&cm1);
520 assert(channels->datalen == 0);
522 LDK::MessageHandler msg_handler1 = MessageHandler_new(ChannelManager_as_ChannelMessageHandler(&cm1), NetGraphMsgHandler_as_RoutingMessageHandler(&graph_msg_handler1));
524 LDK::IgnoringMessageHandler ignoring_handler1 = IgnoringMessageHandler_new();
525 LDK::CustomMessageHandler custom_msg_handler1 = IgnoringMessageHandler_as_CustomMessageHandler(&ignoring_handler1);
527 random_bytes = keys_source1->get_secure_random_bytes(keys_source1->this_arg);
528 LDK::PeerManager net1 = PeerManager_new(std::move(msg_handler1), node_secret1, &random_bytes.data, logger1, std::move(custom_msg_handler1));
530 // Demo getting a channel key and check that its returning real pubkeys:
531 LDK::Sign chan_signer1 = keys_source1->get_channel_signer(keys_source1->this_arg, false, 42);
532 chan_signer1->BaseSign.set_pubkeys(&chan_signer1->BaseSign); // Make sure pubkeys is defined
533 LDKPublicKey payment_point = ChannelPublicKeys_get_payment_point(&chan_signer1->BaseSign.pubkeys);
534 assert(memcmp(&payment_point, &null_pk, sizeof(null_pk)));
536 // Instantiate classes for node 2:
537 memset(&node_seed, 1, 32);
538 LDK::KeysManager keys2 = KeysManager_new(&node_seed, 0, 0);
539 LDK::KeysInterface keys_source2 = KeysManager_as_KeysInterface(&keys2);
540 node_secret2 = keys_source2->get_node_secret(keys_source2->this_arg);
542 LDK::ChannelHandshakeConfig handshake_config2 = ChannelHandshakeConfig_default();
543 ChannelHandshakeConfig_set_minimum_depth(&handshake_config2, 2);
544 LDK::UserConfig config2 = UserConfig_default();
545 UserConfig_set_own_channel_config(&config2, std::move(handshake_config2));
547 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)));
549 LDK::CVec_ChannelDetailsZ channels2 = ChannelManager_list_channels(&cm2);
550 assert(channels2->datalen == 0);
552 LDK::RoutingMessageHandler net_msgs2 = NetGraphMsgHandler_as_RoutingMessageHandler(&graph_msg_handler2);
553 LDK::CResult_ChannelAnnouncementDecodeErrorZ chan_ann = ChannelAnnouncement_read(LDKu8slice { .data = valid_node_announcement, .datalen = sizeof(valid_node_announcement) });
554 assert(chan_ann->result_ok);
555 LDK::CResult_boolLightningErrorZ ann_res = net_msgs2->handle_channel_announcement(net_msgs2->this_arg, chan_ann->contents.result);
556 assert(ann_res->result_ok);
558 LDK::MessageHandler msg_handler2 = MessageHandler_new(ChannelManager_as_ChannelMessageHandler(&cm2), std::move(net_msgs2));
560 LDK::IgnoringMessageHandler ignoring_handler2 = IgnoringMessageHandler_new();
561 LDK::CustomMessageHandler custom_msg_handler2 = IgnoringMessageHandler_as_CustomMessageHandler(&ignoring_handler2);
563 random_bytes = keys_source2->get_secure_random_bytes(keys_source2->this_arg);
564 LDK::PeerManager net2 = PeerManager_new(std::move(msg_handler2), node_secret2, &random_bytes.data, logger2, std::move(custom_msg_handler2));
566 // Open a connection!
567 PeersConnection conn(cm1, cm2, net1, net2);
569 // Note that we have to bind the result to a C++ class to make sure it gets free'd
570 LDK::CResult__u832APIErrorZ res = ChannelManager_create_channel(&cm1, ChannelManager_get_our_node_id(&cm2), 40000, 1000, 42, UserConfig_default());
571 assert(res->result_ok);
572 PeerManager_process_events(&net1);
574 LDK::CVec_ChannelDetailsZ new_channels = ChannelManager_list_channels(&cm1);
575 assert(new_channels->datalen == 1);
576 LDK::ChannelCounterparty new_channels_counterparty = ChannelDetails_get_counterparty(&new_channels->data[0]);
577 LDKPublicKey chan_open_pk = ChannelCounterparty_get_node_id(&new_channels_counterparty);
578 assert(!memcmp(chan_open_pk.compressed_form, ChannelManager_get_our_node_id(&cm2).compressed_form, 33));
581 LDK::CVec_ChannelDetailsZ new_channels_2 = ChannelManager_list_channels(&cm2);
582 if (new_channels_2->datalen == 1) {
583 // Sample getting our counterparty's init features (which used to be hard to do without a memory leak):
584 LDK::ChannelCounterparty new_channels_2_counterparty = ChannelDetails_get_counterparty(&new_channels_2->data[0]);
585 const LDK::InitFeatures init_feats = ChannelCounterparty_get_features(&new_channels_2_counterparty);
586 assert(init_feats->inner != NULL);
589 std::this_thread::yield();
592 LDKEventsProvider ev1 = ChannelManager_as_EventsProvider(&cm1);
595 LDKEventHandler handler = { .this_arg = &queue, .handle_event = handle_event, .free = NULL };
596 ev1.process_pending_events(ev1.this_arg, handler);
597 if (queue.events.size() == 1) {
598 assert(queue.events[0]->tag == LDKEvent_FundingGenerationReady);
599 assert(queue.events[0]->funding_generation_ready.user_channel_id == 42);
600 assert(queue.events[0]->funding_generation_ready.channel_value_satoshis == 40000);
601 assert(queue.events[0]->funding_generation_ready.output_script.datalen == 34);
602 assert(!memcmp(queue.events[0]->funding_generation_ready.output_script.data, channel_open_block + 58 + 81, 34));
603 LDKTransaction funding_transaction { .data = const_cast<uint8_t*>(channel_open_block + 81), .datalen = sizeof(channel_open_block) - 81, .data_is_owned = false };
605 LDK::CResult_NoneAPIErrorZ fund_res = ChannelManager_funding_transaction_generated(&cm1, &queue.events[0]->funding_generation_ready.temporary_channel_id.data, funding_transaction);
606 assert(fund_res->result_ok);
609 std::this_thread::yield();
612 // We observe when the funding signed messages have been exchanged by
613 // waiting for two monitors to be registered.
614 assert(num_txs_broadcasted == 0);
615 PeerManager_process_events(&net1);
616 while (num_txs_broadcasted != 1) {
617 std::this_thread::yield();
620 LDK::Listen listener1 = ChannelManager_as_Listen(&cm1);
621 listener1->block_connected(listener1->this_arg, LDKu8slice { .data = channel_open_block, .datalen = sizeof(channel_open_block) }, 1);
623 LDK::Listen listener2 = ChannelManager_as_Listen(&cm2);
624 listener2->block_connected(listener2->this_arg, LDKu8slice { .data = channel_open_block, .datalen = sizeof(channel_open_block) }, 1);
626 LDKCVec_C2Tuple_usizeTransactionZZ txdata { .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 mons1.ConnectBlock(&channel_open_header, 1, txdata, broadcast, fee_est);
630 txdata = LDKCVec_C2Tuple_usizeTransactionZZ { .data = (LDKC2Tuple_usizeTransactionZ*)malloc(sizeof(LDKC2Tuple_usizeTransactionZ)), .datalen = 1 };
631 *txdata.data = C2Tuple_usizeTransactionZ_new(0, LDKTransaction { .data = (uint8_t*)channel_open_block + 81, .datalen = sizeof(channel_open_block) - 81, .data_is_owned = false });
632 mons2.ConnectBlock(&channel_open_header, 1, txdata, broadcast, fee_est);
634 listener1->block_connected(listener1->this_arg, LDKu8slice { .data = block_1, .datalen = sizeof(block_1) }, 2);
635 listener2->block_connected(listener2->this_arg, LDKu8slice { .data = block_1, .datalen = sizeof(block_1) }, 2);
636 mons1.ConnectBlock(&header_1, 2, LDKCVec_C2Tuple_usizeTransactionZZ { .data = NULL, .datalen = 0 }, broadcast, fee_est);
637 mons2.ConnectBlock(&header_1, 2, LDKCVec_C2Tuple_usizeTransactionZZ { .data = NULL, .datalen = 0 }, broadcast, fee_est);
639 listener1->block_connected(listener1->this_arg, LDKu8slice { .data = block_2, .datalen = sizeof(block_1) }, 3);
640 listener2->block_connected(listener2->this_arg, LDKu8slice { .data = block_2, .datalen = sizeof(block_1) }, 3);
641 mons1.ConnectBlock(&header_2, 3, LDKCVec_C2Tuple_usizeTransactionZZ { .data = NULL, .datalen = 0 }, broadcast, fee_est);
642 mons2.ConnectBlock(&header_2, 3, LDKCVec_C2Tuple_usizeTransactionZZ { .data = NULL, .datalen = 0 }, broadcast, fee_est);
644 PeerManager_process_events(&net1);
645 PeerManager_process_events(&net2);
647 // Now send funds from 1 to 2!
648 uint64_t channel_scid;
650 LDK::CVec_ChannelDetailsZ outbound_channels = ChannelManager_list_usable_channels(&cm1);
651 if (outbound_channels->datalen == 1) {
652 const LDKChannelDetails *channel = &outbound_channels->data[0];
653 LDK::ChannelCounterparty counterparty = ChannelDetails_get_counterparty(channel);
654 // Note that the channel ID is the same as the channel txid reversed as the output index is 0
655 uint8_t expected_chan_id[32];
656 for (int i = 0; i < 32; i++) { expected_chan_id[i] = channel_open_txid[31-i]; }
657 assert(!memcmp(ChannelDetails_get_channel_id(channel), expected_chan_id, 32));
659 ChannelCounterparty_get_node_id(&counterparty).compressed_form,
660 ChannelManager_get_our_node_id(&cm2).compressed_form, 33));
661 assert(ChannelDetails_get_channel_value_satoshis(channel) == 40000);
662 // We opened the channel with 1000 push_msat:
663 assert(ChannelDetails_get_outbound_capacity_msat(channel) ==
664 40000*1000 - 1000 - 1000 * ChannelCounterparty_get_unspendable_punishment_reserve(&counterparty));
665 int64_t inbound_capacity = ((int64_t)1000) - ChannelCounterparty_get_unspendable_punishment_reserve(&counterparty);
666 if (inbound_capacity < 0) inbound_capacity = 0;
667 assert(ChannelDetails_get_inbound_capacity_msat(channel) == (uint64_t)inbound_capacity);
668 assert(ChannelDetails_get_is_usable(channel));
669 LDK::COption_u64Z scid_opt = ChannelDetails_get_short_channel_id(channel);
670 assert(scid_opt->some);
671 channel_scid = scid_opt->some;
674 std::this_thread::yield();
677 LDKCOption_u64Z min_value = {
678 .tag = LDKCOption_u64Z_Some,
681 LDK::CResult_InvoiceSignOrCreationErrorZ invoice = create_invoice_from_channelmanager(&cm2,
682 KeysManager_as_KeysInterface(&keys2),
683 LDKCurrency_Bitcoin, min_value,
685 .chars = (const uint8_t *)"Invoice Description",
686 .len = strlen("Invoice Description"),
687 .chars_is_owned = false
689 assert(invoice->result_ok);
690 LDKThirtyTwoBytes payment_hash;
691 memcpy(payment_hash.data, Invoice_payment_hash(invoice->contents.result), 32);
694 LDK::CVec_ChannelDetailsZ outbound_channels = ChannelManager_list_usable_channels(&cm1);
695 LDK::Score chan_scorer = LDKScore {
696 .this_arg = NULL, .channel_penalty_msat = get_chan_score, .free = NULL
698 LDK::RouteParameters route_params = RouteParameters_new(Payee_new(
699 ChannelManager_get_our_node_id(&cm2), LDKInvoiceFeatures {
700 .inner = NULL, .is_owned = false
701 }, Invoice_route_hints(invoice->contents.result), COption_u64Z_none()),
702 5000, Invoice_min_final_cltv_expiry(invoice->contents.result));
703 LDK::CResult_RouteLightningErrorZ route = find_route(ChannelManager_get_our_node_id(&cm1), &route_params, &net_graph2, &outbound_channels, logger1, &chan_scorer);
704 assert(route->result_ok);
705 LDK::CVec_CVec_RouteHopZZ paths = Route_get_paths(route->contents.result);
706 assert(paths->datalen == 1);
707 assert(paths->data[0].datalen == 1);
708 assert(!memcmp(RouteHop_get_pubkey(&paths->data[0].data[0]).compressed_form,
709 ChannelManager_get_our_node_id(&cm2).compressed_form, 33));
710 assert(RouteHop_get_short_channel_id(&paths->data[0].data[0]) == channel_scid);
711 LDKThirtyTwoBytes payment_secret;
712 memcpy(payment_secret.data, Invoice_payment_secret(invoice->contents.result), 32);
713 LDK::CResult_PaymentIdPaymentSendFailureZ send_res = ChannelManager_send_payment(&cm1, route->contents.result, payment_hash, payment_secret);
714 assert(send_res->result_ok);
718 PeerManager_process_events(&net1);
719 while (mons_updated != 4) {
720 std::this_thread::yield();
723 // Check that we received the payment!
724 LDK::EventsProvider ev2 = ChannelManager_as_EventsProvider(&cm2);
727 LDKEventHandler handler = { .this_arg = &queue, .handle_event = handle_event, .free = NULL };
728 ev2.process_pending_events(handler);
729 if (queue.events.size() == 1) {
730 assert(queue.events[0]->tag == LDKEvent_PendingHTLCsForwardable);
733 std::this_thread::yield();
735 ChannelManager_process_pending_htlc_forwards(&cm2);
736 PeerManager_process_events(&net2);
739 LDKThirtyTwoBytes payment_preimage;
742 LDKEventHandler handler = { .this_arg = &queue, .handle_event = handle_event, .free = NULL };
743 ev2.process_pending_events(handler);
744 assert(queue.events.size() == 1);
745 assert(queue.events[0]->tag == LDKEvent_PaymentReceived);
746 assert(!memcmp(queue.events[0]->payment_received.payment_hash.data, payment_hash.data, 32));
747 assert(queue.events[0]->payment_received.purpose.tag == LDKPaymentPurpose_InvoicePayment);
748 assert(!memcmp(queue.events[0]->payment_received.purpose.invoice_payment.payment_secret.data,
749 Invoice_payment_secret(invoice->contents.result), 32));
750 assert(queue.events[0]->payment_received.amt == 5000);
751 memcpy(payment_preimage.data, queue.events[0]->payment_received.purpose.invoice_payment.payment_preimage.data, 32);
752 assert(ChannelManager_claim_funds(&cm2, payment_preimage));
754 PeerManager_process_events(&net2);
755 // Wait until we've passed through a full set of monitor updates (ie new preimage + CS/RAA messages)
756 while (mons_updated != 5) {
757 std::this_thread::yield();
761 LDKEventHandler handler = { .this_arg = &queue, .handle_event = handle_event, .free = NULL };
762 while (queue.events.size() < 2)
763 ev1.process_pending_events(ev1.this_arg, handler);
764 assert(queue.events.size() == 2);
765 assert(queue.events[0]->tag == LDKEvent_PaymentSent);
766 assert(!memcmp(queue.events[0]->payment_sent.payment_preimage.data, payment_preimage.data, 32));
767 assert(queue.events[1]->tag == LDKEvent_PaymentPathSuccessful);
768 assert(!memcmp(queue.events[1]->payment_path_successful.payment_hash.data, payment_hash.data, 32));
773 cm1_ser = ChannelManager_write(&cm1);
774 cm2_ser = ChannelManager_write(&cm2);
777 LDK::CVec_ChannelMonitorZ mons_list1 = LDKCVec_ChannelMonitorZ { .data = (LDKChannelMonitor*)malloc(sizeof(LDKChannelMonitor)), .datalen = 1 };
778 assert(mons1.mons.size() == 1);
779 mons_list1->data[0] = *& std::get<1>(mons1.mons[0]); // Note that we need a reference, thus need a raw clone here, which *& does.
780 mons_list1->data[0].is_owned = false; // XXX: God this sucks
781 uint8_t node_seed[32];
782 memset(&node_seed, 0, 32);
783 LDK::KeysManager keys1 = KeysManager_new(&node_seed, 1, 0);
784 LDK::KeysInterface keys_source1 = KeysManager_as_KeysInterface(&keys1);
786 LDK::ChannelManagerReadArgs cm1_args = ChannelManagerReadArgs_new(KeysManager_as_KeysInterface(&keys1), fee_est, mon1, broadcast, logger1, UserConfig_default(), std::move(mons_list1));
787 LDK::CResult_C2Tuple_BlockHashChannelManagerZDecodeErrorZ cm1_read =
788 C2Tuple_BlockHashChannelManagerZ_read(LDKu8slice { .data = cm1_ser->data, .datalen = cm1_ser -> datalen}, std::move(cm1_args));
789 assert(cm1_read->result_ok);
790 LDK::ChannelManager cm1(std::move(cm1_read->contents.result->b));
792 LDK::CVec_ChannelMonitorZ mons_list2 = LDKCVec_ChannelMonitorZ { .data = (LDKChannelMonitor*)malloc(sizeof(LDKChannelMonitor)), .datalen = 1 };
793 assert(mons2.mons.size() == 1);
794 mons_list2->data[0] = *& std::get<1>(mons2.mons[0]); // Note that we need a reference, thus need a raw clone here, which *& does.
795 mons_list2->data[0].is_owned = false; // XXX: God this sucks
796 memset(&node_seed, 1, 32);
797 LDK::KeysManager keys2 = KeysManager_new(&node_seed, 1, 0);
799 LDK::ChannelManagerReadArgs cm2_args = ChannelManagerReadArgs_new(KeysManager_as_KeysInterface(&keys2), fee_est, mon2, broadcast, logger2, UserConfig_default(), std::move(mons_list2));
800 LDK::CResult_C2Tuple_BlockHashChannelManagerZDecodeErrorZ cm2_read =
801 C2Tuple_BlockHashChannelManagerZ_read(LDKu8slice { .data = cm2_ser->data, .datalen = cm2_ser -> datalen}, std::move(cm2_args));
802 assert(cm2_read->result_ok);
803 LDK::ChannelManager cm2(std::move(cm2_read->contents.result->b));
805 // Attempt to close the channel...
807 for (int i = 0; i < 32; i++) { chan_id[i] = channel_open_txid[31-i]; }
808 LDK::CResult_NoneAPIErrorZ close_res = ChannelManager_close_channel(&cm1, &chan_id);
809 assert(!close_res->result_ok); // Note that we can't close while disconnected!
811 // Open a connection!
812 LDK::MessageHandler msg_handler1 = MessageHandler_new(ChannelManager_as_ChannelMessageHandler(&cm1), NetGraphMsgHandler_as_RoutingMessageHandler(&graph_msg_handler1));
813 random_bytes = keys_source1->get_secure_random_bytes(keys_source1->this_arg);
815 LDKPublicKey chan_2_node_id = ChannelManager_get_our_node_id(&cm2);
816 LDKCustomMessageHandler custom_msg_handler1 = {
817 .this_arg = &chan_2_node_id,
818 .handle_custom_message = NULL, // We only create custom messages, not handle them
819 .get_and_clear_pending_msg = create_custom_msg,
820 .CustomMessageReader = LDKCustomMessageReader {
822 .read = read_custom_message,
827 LDK::PeerManager net1 = PeerManager_new(std::move(msg_handler1), node_secret1, &random_bytes.data, logger1, std::move(custom_msg_handler1));
829 LDK::MessageHandler msg_handler2 = MessageHandler_new(ChannelManager_as_ChannelMessageHandler(&cm2), NetGraphMsgHandler_as_RoutingMessageHandler(&graph_msg_handler2));
830 CustomMsgQueue peer_2_custom_messages;
831 LDKCustomMessageHandler custom_msg_handler2 = {
832 .this_arg = &peer_2_custom_messages,
833 .handle_custom_message = handle_custom_message,
834 .get_and_clear_pending_msg = never_send_custom_msgs,
835 .CustomMessageReader = LDKCustomMessageReader {
837 .read = read_custom_message,
842 random_bytes = keys_source1->get_secure_random_bytes(keys_source1->this_arg);
843 LDK::PeerManager net2 = PeerManager_new(std::move(msg_handler2), node_secret2, &random_bytes.data, logger2, std::move(custom_msg_handler2));
845 PeersConnection conn(cm1, cm2, net1, net2);
848 // Wait for the channels to be considered up once the reestablish messages are processed
849 LDK::CVec_ChannelDetailsZ outbound_channels = ChannelManager_list_usable_channels(&cm1);
850 if (outbound_channels->datalen == 1) {
855 // Send another payment, this time via the InvoicePayer
856 struct CustomRouteFinderParams router_params = {
858 .graph_ref = &net_graph1,
860 LDKRouter sending_router = {
861 .this_arg = &router_params,
862 .find_route = custom_find_route,
865 LDK::Scorer scorer = Scorer_default();
866 LDK::MultiThreadedLockableScore scorer_mtx = MultiThreadedLockableScore_new(Scorer_as_Score(&scorer));
868 LDKEventHandler handler1 = { .this_arg = &queue1, .handle_event = handle_event, .free = NULL };
869 LDK::InvoicePayer payer = InvoicePayer_new(ChannelManager_as_Payer(&cm1), sending_router, &scorer_mtx, logger1, handler1, RetryAttempts_new(0));
871 LDK::CResult_InvoiceSignOrCreationErrorZ invoice_res2 = create_invoice_from_channelmanager(&cm2,
872 KeysManager_as_KeysInterface(&keys2),
873 LDKCurrency_Bitcoin, COption_u64Z_some(10000),
875 .chars = (const uint8_t *)"Invoice 2 Description",
876 .len = strlen("Invoice 2 Description"),
877 .chars_is_owned = false
879 assert(invoice_res2->result_ok);
880 const LDKInvoice *invoice2 = invoice_res2->contents.result;
881 LDK::CResult_PaymentIdPaymentErrorZ invoice_pay_res = InvoicePayer_pay_invoice(&payer, invoice2);
882 assert(invoice_pay_res->result_ok);
883 PeerManager_process_events(&net1);
885 // Check that we received the payment!
888 LDKEventHandler handler2 = { .this_arg = &queue2, .handle_event = handle_event, .free = NULL };
889 LDK::EventsProvider ev2 = ChannelManager_as_EventsProvider(&cm2);
890 ev2.process_pending_events(handler2);
891 if (queue2.events.size() == 1) {
892 assert(queue2.events[0]->tag == LDKEvent_PendingHTLCsForwardable);
895 std::this_thread::yield();
897 ChannelManager_process_pending_htlc_forwards(&cm2);
898 PeerManager_process_events(&net2);
902 LDKEventHandler handler2 = { .this_arg = &queue2, .handle_event = handle_event, .free = NULL };
903 LDK::EventsProvider ev2 = ChannelManager_as_EventsProvider(&cm2);
904 ev2.process_pending_events(handler2);
905 if (queue2.events.size() == 1) {
906 assert(queue2.events[0]->tag == LDKEvent_PaymentReceived);
907 const struct LDKEvent_LDKPaymentReceived_Body *event_data = &queue2.events[0]->payment_received;
908 assert(!memcmp(event_data->payment_hash.data, Invoice_payment_hash(invoice2), 32));
909 assert(event_data->purpose.tag == LDKPaymentPurpose_InvoicePayment);
910 assert(!memcmp(event_data->purpose.invoice_payment.payment_secret.data,
911 Invoice_payment_secret(invoice2), 32));
912 assert(event_data->amt == 10000);
913 assert(ChannelManager_claim_funds(&cm2, event_data->purpose.invoice_payment.payment_preimage));
916 std::this_thread::yield();
919 while (queue1.events.size() < 2) {
920 PeerManager_process_events(&net2);
921 PeerManager_process_events(&net1);
923 LDK::EventsProvider ev1 = ChannelManager_as_EventsProvider(&cm1);
924 LDK::EventHandler evh1 = InvoicePayer_as_EventHandler(&payer);
925 ev1.process_pending_events(std::move(evh1));
927 assert(queue1.events.size() == 2);
928 assert(queue1.events[0]->tag == LDKEvent_PaymentSent);
929 assert(queue1.events[1]->tag == LDKEvent_PaymentPathSuccessful);
931 // Actually close the channel
932 num_txs_broadcasted = 0;
933 close_res = ChannelManager_close_channel(&cm1, &chan_id);
934 assert(close_res->result_ok);
935 PeerManager_process_events(&net1);
936 while (num_txs_broadcasted != 2) {
937 std::this_thread::yield();
939 LDK::CVec_ChannelDetailsZ chans_after_close1 = ChannelManager_list_channels(&cm1);
940 assert(chans_after_close1->datalen == 0);
941 LDK::CVec_ChannelDetailsZ chans_after_close2 = ChannelManager_list_channels(&cm2);
942 assert(chans_after_close2->datalen == 0);
946 assert(peer_2_custom_messages.msgs.size() != 0);
948 // Few extra random tests:
951 LDKThirtyTwoBytes kdiv_params;
952 memset(&kdiv_params, 43, 32);
953 LDK::InMemorySigner signer = InMemorySigner_new(sk, sk, sk, sk, sk, random_bytes, 42, kdiv_params);