extern "C" { #include "include/rust_types.h" #include "include/lightning.h" } #include "include/lightningpp.hpp" #include #include #include #include #include #include #include #include #include const uint8_t valid_node_announcement[] = { 0x94, 0xe4, 0xf5, 0x61, 0x41, 0x24, 0x7d, 0x90, 0x23, 0xa0, 0xc8, 0x34, 0x8c, 0xc4, 0xca, 0x51, 0xd8, 0x17, 0x59, 0xff, 0x7d, 0xac, 0x8c, 0x9b, 0x63, 0x29, 0x1c, 0xe6, 0x12, 0x12, 0x93, 0xbd, 0x66, 0x4d, 0x6b, 0x9c, 0xfb, 0x35, 0xda, 0x16, 0x06, 0x3d, 0xf0, 0x8f, 0x8a, 0x39, 0x99, 0xa2, 0xf2, 0x5d, 0x12, 0x0f, 0x2b, 0x42, 0x1b, 0x8b, 0x9a, 0xfe, 0x33, 0x0c, 0xeb, 0x33, 0x5e, 0x52, 0xee, 0x99, 0xa1, 0x07, 0x06, 0xed, 0xf8, 0x48, 0x7a, 0xc6, 0xe5, 0xf5, 0x5e, 0x01, 0x3a, 0x41, 0x2f, 0x18, 0x94, 0x8a, 0x3b, 0x0a, 0x52, 0x3f, 0xbf, 0x61, 0xa9, 0xc5, 0x4f, 0x70, 0xee, 0xb8, 0x79, 0x23, 0xbb, 0x1a, 0x44, 0x7d, 0x91, 0xe6, 0x2a, 0xbc, 0xa1, 0x07, 0xbc, 0x65, 0x3b, 0x02, 0xd9, 0x1d, 0xb2, 0xf2, 0x3a, 0xcb, 0x75, 0x79, 0xc6, 0x66, 0xd8, 0xc1, 0x71, 0x29, 0xdf, 0x04, 0x60, 0xf4, 0xbf, 0x07, 0x7b, 0xb9, 0xc2, 0x11, 0x94, 0x6a, 0x28, 0xc2, 0xdd, 0xd8, 0x7b, 0x44, 0x8f, 0x08, 0xe3, 0xc8, 0xd8, 0xf4, 0x81, 0xb0, 0x9f, 0x94, 0xcb, 0xc8, 0xc1, 0x3c, 0xc2, 0x6e, 0x31, 0x26, 0xfc, 0x33, 0x16, 0x3b, 0xe0, 0xde, 0xa1, 0x16, 0x21, 0x9f, 0x89, 0xdd, 0x97, 0xa4, 0x41, 0xf2, 0x9f, 0x19, 0xb1, 0xae, 0x82, 0xf7, 0x85, 0x9a, 0xb7, 0x8f, 0xb7, 0x52, 0x7a, 0x72, 0xf1, 0x5e, 0x89, 0xe1, 0x8a, 0xcd, 0x40, 0xb5, 0x8e, 0xc3, 0xca, 0x42, 0x76, 0xa3, 0x6e, 0x1b, 0xf4, 0x87, 0x35, 0x30, 0x58, 0x43, 0x04, 0xd9, 0x2c, 0x50, 0x54, 0x55, 0x47, 0x6f, 0x70, 0x9b, 0x42, 0x1f, 0x91, 0xfc, 0xa1, 0xdb, 0x72, 0x53, 0x96, 0xc8, 0xe5, 0xcd, 0x0e, 0xcb, 0xa0, 0xfe, 0x6b, 0x08, 0x77, 0x48, 0xb7, 0xad, 0x4a, 0x69, 0x7c, 0xdc, 0xd8, 0x04, 0x28, 0x35, 0x9b, 0x73, 0x00, 0x00, 0x43, 0x49, 0x7f, 0xd7, 0xf8, 0x26, 0x95, 0x71, 0x08, 0xf4, 0xa3, 0x0f, 0xd9, 0xce, 0xc3, 0xae, 0xba, 0x79, 0x97, 0x20, 0x84, 0xe9, 0x0e, 0xad, 0x01, 0xea, 0x33, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x5b, 0xe5, 0xe9, 0x47, 0x82, 0x09, 0x67, 0x4a, 0x96, 0xe6, 0x0f, 0x1f, 0x03, 0x7f, 0x61, 0x76, 0x54, 0x0f, 0xd0, 0x01, 0xfa, 0x1d, 0x64, 0x69, 0x47, 0x70, 0xc5, 0x6a, 0x77, 0x09, 0xc4, 0x2c, 0x03, 0x5c, 0x4e, 0x0d, 0xec, 0x72, 0x15, 0xe2, 0x68, 0x33, 0x93, 0x87, 0x30, 0xe5, 0xe5, 0x05, 0xaa, 0x62, 0x50, 0x4d, 0xa8, 0x5b, 0xa5, 0x71, 0x06, 0xa4, 0x6b, 0x5a, 0x24, 0x04, 0xfc, 0x9d, 0x8e, 0x02, 0xba, 0x72, 0xa6, 0xe8, 0xba, 0x53, 0xe8, 0xb9, 0x71, 0xad, 0x0c, 0x98, 0x23, 0x96, 0x8a, 0xef, 0x4d, 0x78, 0xce, 0x8a, 0xf2, 0x55, 0xab, 0x43, 0xdf, 0xf8, 0x30, 0x03, 0xc9, 0x02, 0xfb, 0x8d, 0x02, 0x16, 0x34, 0x5b, 0xf8, 0x31, 0x16, 0x4a, 0x03, 0x75, 0x8e, 0xae, 0xa5, 0xe8, 0xb6, 0x6f, 0xee, 0x2b, 0xe7, 0x71, 0x0b, 0x8f, 0x19, 0x0e, 0xe8, 0x80, 0x24, 0x90, 0x32, 0xa2, 0x9e, 0xd6, 0x6e }; // A simple block containing only one transaction (which is the channel-open transaction for the // channel we'll create). This was originally created by printing additional data in a simple // rust-lightning unit test. const uint8_t channel_open_block[] = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xa2, 0x47, 0xd2, 0xf8, 0xd4, 0xe0, 0x6a, 0x3f, 0xf9, 0x7a, 0x9a, 0x34, 0xbb, 0xa9, 0x96, 0xde, 0x63, 0x84, 0x5a, 0xce, 0xcf, 0x98, 0xb8, 0xbb, 0x75, 0x4c, 0x4f, 0x7d, 0xee, 0x4c, 0xa9, 0x5f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x40, 0x9c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x22, 0x00, 0x20, 0x20, 0x12, 0x70, 0x44, 0x41, 0x40, 0xaf, 0xc5, 0x72, 0x97, 0xc8, 0x69, 0xba, 0x04, 0xdb, 0x28, 0x7b, 0xd7, 0x32, 0x07, 0x33, 0x3a, 0x4a, 0xc2, 0xc5, 0x56, 0x06, 0x05, 0x65, 0xd7, 0xa8, 0xcf, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 }; // The first transaction in the block is header (80 bytes) + transaction count (1 byte) into the block data. const uint8_t *channel_open_tx = channel_open_block + 81; const uint8_t channel_open_txid[] = { 0x5f, 0xa9, 0x4c, 0xee, 0x7d, 0x4f, 0x4c, 0x75, 0xbb, 0xb8, 0x98, 0xcf, 0xce, 0x5a, 0x84, 0x63, 0xde, 0x96, 0xa9, 0xbb, 0x34, 0x9a, 0x7a, 0xf9, 0x3f, 0x6a, 0xe0, 0xd4, 0xf8, 0xd2, 0x47, 0xa2 }; // Two blocks built on top of channel_open_block: const uint8_t block_1[] = { 0x01, 0x00, 0x00, 0x00, 0x65, 0x8e, 0xf1, 0x90, 0x88, 0xfa, 0x13, 0x9c, 0x6a, 0xea, 0xf7, 0xc1, 0x5a, 0xdd, 0x52, 0x4d, 0x3c, 0x48, 0x03, 0xb3, 0x9b, 0x25, 0x4f, 0x02, 0x79, 0x05, 0x90, 0xe0, 0xc4, 0x8d, 0xa0, 0x62, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; const uint8_t block_2[] = { 0x01, 0x00, 0x00, 0x00, 0xf2, 0x08, 0x87, 0x51, 0xcb, 0xb1, 0x1a, 0x51, 0x76, 0x01, 0x6c, 0x5d, 0x76, 0x26, 0x54, 0x6f, 0xd9, 0xbd, 0xa6, 0xa5, 0xe9, 0x4b, 0x21, 0x6e, 0xda, 0xa3, 0x64, 0x23, 0xcd, 0xf1, 0xe2, 0xe2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; const LDKThirtyTwoBytes payment_preimage_1 = { .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 } }; const LDKThirtyTwoBytes payment_hash_1 = { .data = { 0xdc, 0xb1, 0xac, 0x4a, 0x5d, 0xe3, 0x70, 0xca, 0xd0, 0x91, 0xc1, 0x3f, 0x13, 0xae, 0xe2, 0xf9, 0x36, 0xc2, 0x78, 0xfa, 0x05, 0xd2, 0x64, 0x65, 0x3c, 0x0c, 0x13, 0x21, 0x85, 0x2a, 0x35, 0xe8 } }; void print_log(const void *this_arg, const char *record) { printf("%p - %s\n", this_arg, record); } uint32_t get_fee(const void *this_arg, LDKConfirmationTarget target) { if (target == LDKConfirmationTarget_Background) { return 253; } else { return 507; } // Note that we don't call _free() on target, but that's OK, its unitary } static int num_txs_broadcasted = 0; // Technically a race, but ints are atomic on x86 void broadcast_tx(const void *this_arg, LDKTransaction tx) { num_txs_broadcasted += 1; //TODO } struct NodeMonitors { std::mutex mut; std::vector> mons; LDKChainWatchInterfaceUtil* watch_util; LDKLogger* logger; }; void NodeMonitors_free(void *this_arg) { NodeMonitors* arg = (NodeMonitors*) this_arg; delete arg; } LDKCResult_NoneChannelMonitorUpdateErrZ add_channel_monitor(const void *this_arg, LDKOutPoint funding_txo_arg, LDKChannelMonitor monitor_arg) { // First bind the args to C++ objects so they auto-free LDK::ChannelMonitor mon(std::move(monitor_arg)); LDK::OutPoint funding_txo(std::move(funding_txo_arg)); NodeMonitors* arg = (NodeMonitors*) this_arg; std::unique_lock l(arg->mut); LDK::ChainWatchInterface watch = ChainWatchInterfaceUtil_as_ChainWatchInterface(arg->watch_util); LDK::C2Tuple_OutPointScriptZ funding_info = ChannelMonitor_get_funding_txo(&mon); LDKThirtyTwoBytes funding_txid; memcpy(funding_txid.data, OutPoint_get_txid(funding_info->a), 32); LDK::C2Tuple_Txidu32Z outpoint(C2Tuple_Txidu32Z_new(funding_txid, OutPoint_get_index(funding_info->a))); watch->install_watch_outpoint(watch->this_arg, outpoint, LDKu8slice { .data = funding_info->b->data, .datalen = funding_info->b->datalen, }); watch->install_watch_tx(watch->this_arg, &funding_txid.data, LDKu8slice { .data = funding_info->b->data, .datalen = funding_info->b->datalen, }); arg->mons.push_back(std::make_pair(std::move(funding_txo), std::move(mon))); return CResult_NoneChannelMonitorUpdateErrZ_ok(); } static int mons_updated = 0; // Technically a race, but ints are atomic on x86. LDKCResult_NoneChannelMonitorUpdateErrZ update_channel_monitor(const void *this_arg, LDKOutPoint funding_txo_arg, LDKChannelMonitorUpdate monitor_arg) { // First bind the args to C++ objects so they auto-free LDK::ChannelMonitorUpdate update(std::move(monitor_arg)); LDK::OutPoint funding_txo(std::move(funding_txo_arg)); NodeMonitors* arg = (NodeMonitors*) this_arg; std::unique_lock l(arg->mut); bool updated = false; for (auto& mon : arg->mons) { if (OutPoint_get_index(&mon.first) == OutPoint_get_index(&funding_txo) && !memcmp(OutPoint_get_txid(&mon.first), OutPoint_get_txid(&funding_txo), 32)) { updated = true; LDKBroadcasterInterface broadcaster = { .broadcast_transaction = broadcast_tx, }; LDK::CResult_NoneMonitorUpdateErrorZ res = ChannelMonitor_update_monitor(&mon.second, update, &broadcaster, arg->logger); assert(res->result_ok); } } assert(updated); mons_updated += 1; return CResult_NoneChannelMonitorUpdateErrZ_ok(); } LDKCVec_MonitorEventZ monitors_pending_monitor_events(const void *this_arg) { NodeMonitors* arg = (NodeMonitors*) this_arg; std::unique_lock l(arg->mut); if (arg->mons.size() == 0) { return LDKCVec_MonitorEventZ { .data = NULL, .datalen = 0, }; } else { // We only ever actually have one channel per node, plus concatenating two // Rust Vecs to each other from C++ will require a bit of effort. assert(arg->mons.size() == 1); return ChannelMonitor_get_and_clear_pending_monitor_events(&arg->mons[0].second); } } uintptr_t sock_send_data(void *this_arg, LDKu8slice data, bool resume_read) { return write((int)((long)this_arg), data.data, data.datalen); } void sock_disconnect_socket(void *this_arg) { close((int)((long)this_arg)); } bool sock_eq(const void *this_arg, const void *other_arg) { return this_arg == other_arg; } uint64_t sock_hash(const void *this_arg) { return (uint64_t)this_arg; } void sock_read_data_thread(int rdfd, LDKSocketDescriptor *peer_descriptor, LDKPeerManager *pm) { unsigned char buf[1024]; LDKu8slice data; data.data = buf; ssize_t readlen = 0; while ((readlen = read(rdfd, buf, 1024)) > 0) { data.datalen = readlen; LDK::CResult_boolPeerHandleErrorZ res = PeerManager_read_event(&*pm, peer_descriptor, data); if (!res->result_ok) { peer_descriptor->disconnect_socket(peer_descriptor->this_arg); return; } PeerManager_process_events(pm); } PeerManager_socket_disconnected(&*pm, peer_descriptor); } int main() { uint8_t node_seed[32]; memset(&node_seed, 0, 32); LDKPublicKey null_pk; memset(&null_pk, 0, sizeof(null_pk)); LDKNetwork network = LDKNetwork_Testnet; // Trait implementations: LDKFeeEstimator fee_est { .this_arg = NULL, .get_est_sat_per_1000_weight = get_fee, .free = NULL, }; LDKBroadcasterInterface broadcast { .this_arg = NULL, .broadcast_transaction = broadcast_tx, .free = NULL, }; // Instantiate classes for node 1: LDKLogger logger1 { .this_arg = (void*)1, .log = print_log, .free = NULL, }; LDK::ChainWatchInterfaceUtil chain1 = ChainWatchInterfaceUtil_new(network); LDK::BlockNotifier blocks1 = BlockNotifier_new(ChainWatchInterfaceUtil_as_ChainWatchInterface(&chain1)); LDKManyChannelMonitor mon1 { .this_arg = new NodeMonitors { .watch_util = &chain1, .logger = &logger1 }, .add_monitor = add_channel_monitor, .update_monitor = update_channel_monitor, .get_and_clear_pending_monitor_events = monitors_pending_monitor_events, .free = NodeMonitors_free, }; LDK::KeysManager keys1 = KeysManager_new(&node_seed, network, 0, 0); LDK::KeysInterface keys_source1 = KeysManager_as_KeysInterface(&keys1); LDKSecretKey node_secret1 = keys_source1->get_node_secret(keys_source1->this_arg); LDK::UserConfig config1 = UserConfig_default(); LDK::ChannelManager cm1 = ChannelManager_new(network, fee_est, mon1, broadcast, logger1, KeysManager_as_KeysInterface(&keys1), config1, 0); BlockNotifier_register_listener(&blocks1, ChannelManager_as_ChainListener(&cm1)); LDK::CVec_ChannelDetailsZ channels = ChannelManager_list_channels(&cm1); assert(channels->datalen == 0); LDK::NetGraphMsgHandler net_graph1 = NetGraphMsgHandler_new(ChainWatchInterfaceUtil_as_ChainWatchInterface(&chain1), logger1); LDK::MessageHandler msg_handler1 = MessageHandler_new(ChannelManager_as_ChannelMessageHandler(&cm1), NetGraphMsgHandler_as_RoutingMessageHandler(&net_graph1)); LDKThirtyTwoBytes random_bytes = keys_source1->get_secure_random_bytes(keys_source1->this_arg); LDK::PeerManager net1 = PeerManager_new(msg_handler1, node_secret1, &random_bytes.data, logger1); // Demo getting a channel key and check that its returning real pubkeys: LDK::ChannelKeys chan_keys1 = keys_source1->get_channel_keys(keys_source1->this_arg, false, 42); chan_keys1->set_pubkeys(&chan_keys1); // Make sure pubkeys is defined LDKPublicKey payment_point = ChannelPublicKeys_get_payment_point(&chan_keys1->pubkeys); assert(memcmp(&payment_point, &null_pk, sizeof(null_pk))); // Instantiate classes for node 2: LDKLogger logger2 { .this_arg = (void*)2, .log = print_log, .free = NULL, }; LDK::ChainWatchInterfaceUtil chain2 = ChainWatchInterfaceUtil_new(network); LDK::BlockNotifier blocks2 = BlockNotifier_new(ChainWatchInterfaceUtil_as_ChainWatchInterface(&chain2)); LDKManyChannelMonitor mon2 { .this_arg = new NodeMonitors { .watch_util = &chain2, .logger = &logger2 }, .add_monitor = add_channel_monitor, .update_monitor = update_channel_monitor, .get_and_clear_pending_monitor_events = monitors_pending_monitor_events, .free = NodeMonitors_free, }; memset(&node_seed, 1, 32); LDK::KeysManager keys2 = KeysManager_new(&node_seed, network, 0, 0); LDK::KeysInterface keys_source2 = KeysManager_as_KeysInterface(&keys2); LDKSecretKey node_secret2 = keys_source2->get_node_secret(keys_source2->this_arg); LDK::ChannelHandshakeConfig handshake_config2 = ChannelHandshakeConfig_default(); ChannelHandshakeConfig_set_minimum_depth(&handshake_config2, 2); LDK::UserConfig config2 = UserConfig_default(); UserConfig_set_own_channel_config(&config2, handshake_config2); LDK::ChannelManager cm2 = ChannelManager_new(network, fee_est, mon2, broadcast, logger2, KeysManager_as_KeysInterface(&keys2), config2, 0); BlockNotifier_register_listener(&blocks2, ChannelManager_as_ChainListener(&cm2)); LDK::CVec_ChannelDetailsZ channels2 = ChannelManager_list_channels(&cm2); assert(channels2->datalen == 0); LDK::NetGraphMsgHandler net_graph2 = NetGraphMsgHandler_new(ChainWatchInterfaceUtil_as_ChainWatchInterface(&chain2), logger2); LDK::RoutingMessageHandler net_msgs2 = NetGraphMsgHandler_as_RoutingMessageHandler(&net_graph2); LDK::ChannelAnnouncement chan_ann = ChannelAnnouncement_read(LDKu8slice { .data = valid_node_announcement, .datalen = sizeof(valid_node_announcement) }); LDK::CResult_boolLightningErrorZ ann_res = net_msgs2->handle_channel_announcement(net_msgs2->this_arg, &chan_ann); assert(ann_res->result_ok); LDK::MessageHandler msg_handler2 = MessageHandler_new(ChannelManager_as_ChannelMessageHandler(&cm2), net_msgs2); LDKThirtyTwoBytes random_bytes2 = keys_source2->get_secure_random_bytes(keys_source2->this_arg); LDK::PeerManager net2 = PeerManager_new(msg_handler2, node_secret2, &random_bytes2.data, logger2); // Open a connection! int pipefds_1_to_2[2]; int pipefds_2_to_1[2]; assert(!pipe(pipefds_1_to_2)); assert(!pipe(pipefds_2_to_1)); LDKSocketDescriptor sock1 { .this_arg = (void*)(long)pipefds_1_to_2[1], .send_data = sock_send_data, .disconnect_socket = sock_disconnect_socket, .eq = sock_eq, .hash = sock_hash, .clone = NULL, .free = NULL, }; LDKSocketDescriptor sock2 { .this_arg = (void*)(long)pipefds_2_to_1[1], .send_data = sock_send_data, .disconnect_socket = sock_disconnect_socket, .eq = sock_eq, .hash = sock_hash, .clone = NULL, .free = NULL, }; std::thread t1(&sock_read_data_thread, pipefds_2_to_1[0], &sock1, &net1); std::thread t2(&sock_read_data_thread, pipefds_1_to_2[0], &sock2, &net2); // Note that we have to bind the result to a C++ class to make sure it gets free'd LDK::CResult_CVec_u8ZPeerHandleErrorZ con_res = PeerManager_new_outbound_connection(&net1, ChannelManager_get_our_node_id(&cm2), sock1); assert(con_res->result_ok); LDK::CResult_NonePeerHandleErrorZ con_res2 = PeerManager_new_inbound_connection(&net2, sock2); assert(con_res2->result_ok); auto writelen = write(pipefds_1_to_2[1], con_res->contents.result->data, con_res->contents.result->datalen); assert(writelen > 0 && uint64_t(writelen) == con_res->contents.result->datalen); while (true) { // Wait for the initial handshakes to complete... LDK::CVec_PublicKeyZ peers_1 = PeerManager_get_peer_node_ids(&net1); LDK::CVec_PublicKeyZ peers_2 = PeerManager_get_peer_node_ids(&net2); if (peers_1->datalen == 1 && peers_2->datalen ==1) { break; } std::this_thread::yield(); } // Note that we have to bind the result to a C++ class to make sure it gets free'd LDK::CResult_NoneAPIErrorZ res = ChannelManager_create_channel(&cm1, ChannelManager_get_our_node_id(&cm2), 40000, 1000, 42, config1); assert(res->result_ok); PeerManager_process_events(&net1); LDK::CVec_ChannelDetailsZ new_channels = ChannelManager_list_channels(&cm1); assert(new_channels->datalen == 1); LDKPublicKey chan_open_pk = ChannelDetails_get_remote_network_id(&new_channels->data[0]); assert(!memcmp(chan_open_pk.compressed_form, ChannelManager_get_our_node_id(&cm2).compressed_form, 33)); while (true) { LDK::CVec_ChannelDetailsZ new_channels_2 = ChannelManager_list_channels(&cm2); if (new_channels_2->datalen == 1) { // Sample getting our counterparty's init features (which used to be hard to do without a memory leak): const LDK::InitFeatures init_feats = ChannelDetails_get_counterparty_features(&new_channels_2->data[0]); assert(init_feats->inner != NULL); break; } std::this_thread::yield(); } LDKEventsProvider ev1 = ChannelManager_as_EventsProvider(&cm1); while (true) { LDK::CVec_EventZ events = ev1.get_and_clear_pending_events(ev1.this_arg); if (events->datalen == 1) { assert(events->data[0].tag == LDKEvent_FundingGenerationReady); assert(events->data[0].funding_generation_ready.user_channel_id == 42); assert(events->data[0].funding_generation_ready.channel_value_satoshis == 40000); assert(events->data[0].funding_generation_ready.output_script.datalen == 34); assert(!memcmp(events->data[0].funding_generation_ready.output_script.data, channel_open_tx + 58, 34)); LDKThirtyTwoBytes txid; for (int i = 0; i < 32; i++) { txid.data[i] = channel_open_txid[31-i]; } LDK::OutPoint outp = OutPoint_new(txid, 0); ChannelManager_funding_transaction_generated(&cm1, &events->data[0].funding_generation_ready.temporary_channel_id.data, outp); break; } std::this_thread::yield(); } // We observe when the funding signed messages have been exchanged by // waiting for two monitors to be registered. PeerManager_process_events(&net1); while (true) { LDK::CVec_EventZ events = ev1.get_and_clear_pending_events(ev1.this_arg); if (events->datalen == 1) { assert(events->data[0].tag == LDKEvent_FundingBroadcastSafe); assert(events->data[0].funding_broadcast_safe.user_channel_id == 42); break; } std::this_thread::yield(); } BlockNotifier_block_connected(&blocks1, LDKu8slice { .data = channel_open_block, .datalen = sizeof(channel_open_block) }, 1); BlockNotifier_block_connected(&blocks2, LDKu8slice { .data = channel_open_block, .datalen = sizeof(channel_open_block) }, 1); BlockNotifier_block_connected(&blocks1, LDKu8slice { .data = block_1, .datalen = sizeof(block_1) }, 2); BlockNotifier_block_connected(&blocks2, LDKu8slice { .data = block_1, .datalen = sizeof(block_1) }, 2); BlockNotifier_block_connected(&blocks1, LDKu8slice { .data = block_2, .datalen = sizeof(block_2) }, 3); BlockNotifier_block_connected(&blocks2, LDKu8slice { .data = block_2, .datalen = sizeof(block_2) }, 3); PeerManager_process_events(&net1); PeerManager_process_events(&net2); // Now send funds from 1 to 2! while (true) { LDK::CVec_ChannelDetailsZ outbound_channels = ChannelManager_list_usable_channels(&cm1); if (outbound_channels->datalen == 1) { const LDKChannelDetails *channel = &outbound_channels->data[0]; // Note that the channel ID is the same as the channel txid reversed as the output index is 0 uint8_t expected_chan_id[32]; for (int i = 0; i < 32; i++) { expected_chan_id[i] = channel_open_txid[31-i]; } assert(!memcmp(ChannelDetails_get_channel_id(channel), expected_chan_id, 32)); assert(!memcmp(ChannelDetails_get_remote_network_id(channel).compressed_form, ChannelManager_get_our_node_id(&cm2).compressed_form, 33)); assert(ChannelDetails_get_channel_value_satoshis(channel) == 40000); // We opened the channel with 1000 push_msat: assert(ChannelDetails_get_outbound_capacity_msat(channel) == 40000*1000 - 1000); assert(ChannelDetails_get_inbound_capacity_msat(channel) == 1000); assert(ChannelDetails_get_is_live(channel)); break; } std::this_thread::yield(); } LDK::CVec_ChannelDetailsZ outbound_channels = ChannelManager_list_usable_channels(&cm1); LDKThirtyTwoBytes payment_secret; memset(payment_secret.data, 0x42, 32); { LDK::LockedNetworkGraph graph_2_locked = NetGraphMsgHandler_read_locked_graph(&net_graph2); LDK::NetworkGraph graph_2_ref = LockedNetworkGraph_graph(&graph_2_locked); LDK::CResult_RouteLightningErrorZ route = get_route(ChannelManager_get_our_node_id(&cm1), &graph_2_ref, ChannelManager_get_our_node_id(&cm2), &outbound_channels, LDKCVec_RouteHintZ { .data = NULL, .datalen = 0 }, 5000, 10, logger1); assert(route->result_ok); LDK::CResult_NonePaymentSendFailureZ send_res = ChannelManager_send_payment(&cm1, route->contents.result, payment_hash_1, payment_secret); assert(send_res->result_ok); } mons_updated = 0; PeerManager_process_events(&net1); while (mons_updated != 4) { std::this_thread::yield(); } // Check that we received the payment! LDKEventsProvider ev2 = ChannelManager_as_EventsProvider(&cm2); while (true) { LDK::CVec_EventZ events = ev2.get_and_clear_pending_events(ev2.this_arg); if (events->datalen == 1) { assert(events->data[0].tag == LDKEvent_PendingHTLCsForwardable); break; } std::this_thread::yield(); } ChannelManager_process_pending_htlc_forwards(&cm2); PeerManager_process_events(&net2); mons_updated = 0; { LDK::CVec_EventZ events = ev2.get_and_clear_pending_events(ev2.this_arg); assert(events->datalen == 1); assert(events->data[0].tag == LDKEvent_PaymentReceived); assert(!memcmp(events->data[0].payment_received.payment_hash.data, payment_hash_1.data, 32)); assert(!memcmp(events->data[0].payment_received.payment_secret.data, payment_secret.data, 32)); assert(events->data[0].payment_received.amt == 5000); assert(ChannelManager_claim_funds(&cm2, payment_preimage_1, payment_secret, 5000)); } PeerManager_process_events(&net2); // Wait until we've passed through a full set of monitor updates (ie new preimage + CS/RAA messages) while (mons_updated != 5) { std::this_thread::yield(); } { LDK::CVec_EventZ events = ev1.get_and_clear_pending_events(ev1.this_arg); assert(events->datalen == 1); assert(events->data[0].tag == LDKEvent_PaymentSent); assert(!memcmp(events->data[0].payment_sent.payment_preimage.data, payment_preimage_1.data, 32)); } // Close the channel. uint8_t chan_id[32]; for (int i = 0; i < 32; i++) { chan_id[i] = channel_open_txid[31-i]; } LDK::CResult_NoneAPIErrorZ close_res = ChannelManager_close_channel(&cm1, &chan_id); assert(close_res->result_ok); PeerManager_process_events(&net1); num_txs_broadcasted = 0; while (num_txs_broadcasted != 2) { std::this_thread::yield(); } LDK::CVec_ChannelDetailsZ chans_after_close1 = ChannelManager_list_channels(&cm1); assert(chans_after_close1->datalen == 0); LDK::CVec_ChannelDetailsZ chans_after_close2 = ChannelManager_list_channels(&cm2); assert(chans_after_close2->datalen == 0); close(pipefds_1_to_2[0]); close(pipefds_2_to_1[0]); close(pipefds_1_to_2[1]); close(pipefds_2_to_1[1]); t1.join(); t2.join(); // Few extra random tests: LDKSecretKey sk; memset(&sk, 42, 32); LDKC2Tuple_u64u64Z kdiv_params; kdiv_params.a = (uint64_t*) malloc(8); kdiv_params.b = (uint64_t*) malloc(8); *kdiv_params.a = 42; *kdiv_params.b = 42; LDK::InMemoryChannelKeys keys = InMemoryChannelKeys_new(sk, sk, sk, sk, sk, random_bytes, 42, kdiv_params); }