git.bitcoin.ninja Git - rust-lightning/blob - lightning/src/routing/test_utils.rs

   1 // This file is Copyright its original authors, visible in version control
   2 // history.
   3 //
   4 // This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE
   5 // or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   6 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
   7 // You may not use this file except in accordance with one or both of these
   8 // licenses.
   9
  10 use crate::routing::gossip::{NetworkGraph, NodeAlias, P2PGossipSync};
  11 use crate::ln::features::{ChannelFeatures, NodeFeatures};
  12 use crate::ln::msgs::{ChannelAnnouncement, ChannelUpdate, MAX_VALUE_MSAT, NodeAnnouncement, RoutingMessageHandler, SocketAddress, UnsignedChannelAnnouncement, UnsignedChannelUpdate, UnsignedNodeAnnouncement};
  13 use crate::util::test_utils;
  14 use crate::util::ser::Writeable;
  15
  16 use bitcoin::blockdata::constants::ChainHash;
  17 use bitcoin::hashes::sha256d::Hash as Sha256dHash;
  18 use bitcoin::hashes::Hash;
  19 use bitcoin::hashes::hex::FromHex;
  20 use bitcoin::network::constants::Network;
  21 use bitcoin::secp256k1::{PublicKey,SecretKey};
  22 use bitcoin::secp256k1::{Secp256k1, All};
  23
  24 #[allow(unused)]
  25 use crate::prelude::*;
  26 use crate::sync::{self, Arc};
  27
  28 use crate::routing::gossip::NodeId;
  29
  30 // Using the same keys for LN and BTC ids
  31 pub(crate) fn add_channel(
  32         gossip_sync: &P2PGossipSync<Arc<NetworkGraph<Arc<test_utils::TestLogger>>>, Arc<test_utils::TestChainSource>, Arc<test_utils::TestLogger>>,
  33         secp_ctx: &Secp256k1<All>, node_1_privkey: &SecretKey, node_2_privkey: &SecretKey, features: ChannelFeatures, short_channel_id: u64
  34 ) {
  35         let node_id_1 = NodeId::from_pubkey(&PublicKey::from_secret_key(&secp_ctx, node_1_privkey));
  36         let node_id_2 = NodeId::from_pubkey(&PublicKey::from_secret_key(&secp_ctx, node_2_privkey));
  37
  38         let unsigned_announcement = UnsignedChannelAnnouncement {
  39                 features,
  40                 chain_hash: ChainHash::using_genesis_block(Network::Testnet),
  41                 short_channel_id,
  42                 node_id_1,
  43                 node_id_2,
  44                 bitcoin_key_1: node_id_1,
  45                 bitcoin_key_2: node_id_2,
  46                 excess_data: Vec::new(),
  47         };
  48
  49         let msghash = hash_to_message!(&Sha256dHash::hash(&unsigned_announcement.encode()[..])[..]);
  50         let valid_announcement = ChannelAnnouncement {
  51                 node_signature_1: secp_ctx.sign_ecdsa(&msghash, node_1_privkey),
  52                 node_signature_2: secp_ctx.sign_ecdsa(&msghash, node_2_privkey),
  53                 bitcoin_signature_1: secp_ctx.sign_ecdsa(&msghash, node_1_privkey),
  54                 bitcoin_signature_2: secp_ctx.sign_ecdsa(&msghash, node_2_privkey),
  55                 contents: unsigned_announcement.clone(),
  56         };
  57         match gossip_sync.handle_channel_announcement(&valid_announcement) {
  58                 Ok(res) => assert!(res),
  59                 _ => panic!()
  60         };
  61 }
  62
  63 pub(crate) fn add_or_update_node(
  64         gossip_sync: &P2PGossipSync<Arc<NetworkGraph<Arc<test_utils::TestLogger>>>, Arc<test_utils::TestChainSource>, Arc<test_utils::TestLogger>>,
  65         secp_ctx: &Secp256k1<All>, node_privkey: &SecretKey, features: NodeFeatures, timestamp: u32
  66 ) {
  67         let node_id = NodeId::from_pubkey(&PublicKey::from_secret_key(&secp_ctx, node_privkey));
  68         let unsigned_announcement = UnsignedNodeAnnouncement {
  69                 features,
  70                 timestamp,
  71                 node_id,
  72                 rgb: [0; 3],
  73                 alias: NodeAlias([0; 32]),
  74                 addresses: vec![SocketAddress::TcpIpV4 { addr: [127, 0, 0, 1], port: 1000 }],
  75                 excess_address_data: Vec::new(),
  76                 excess_data: Vec::new(),
  77         };
  78         let msghash = hash_to_message!(&Sha256dHash::hash(&unsigned_announcement.encode()[..])[..]);
  79         let valid_announcement = NodeAnnouncement {
  80                 signature: secp_ctx.sign_ecdsa(&msghash, node_privkey),
  81                 contents: unsigned_announcement.clone()
  82         };
  83
  84         match gossip_sync.handle_node_announcement(&valid_announcement) {
  85                 Ok(_) => (),
  86                 Err(_) => panic!()
  87         };
  88 }
  89
  90 pub(crate) fn update_channel(
  91         gossip_sync: &P2PGossipSync<Arc<NetworkGraph<Arc<test_utils::TestLogger>>>, Arc<test_utils::TestChainSource>, Arc<test_utils::TestLogger>>,
  92         secp_ctx: &Secp256k1<All>, node_privkey: &SecretKey, update: UnsignedChannelUpdate
  93 ) {
  94         let msghash = hash_to_message!(&Sha256dHash::hash(&update.encode()[..])[..]);
  95         let valid_channel_update = ChannelUpdate {
  96                 signature: secp_ctx.sign_ecdsa(&msghash, node_privkey),
  97                 contents: update.clone()
  98         };
  99
 100         match gossip_sync.handle_channel_update(&valid_channel_update) {
 101                 Ok(res) => assert!(res),
 102                 Err(_) => panic!()
 103         };
 104 }
 105
 106 pub(super) fn get_nodes(secp_ctx: &Secp256k1<All>) -> (SecretKey, PublicKey, Vec<SecretKey>, Vec<PublicKey>) {
 107         let privkeys: Vec<SecretKey> = (2..22).map(|i| {
 108                 SecretKey::from_slice(&<Vec<u8>>::from_hex(&format!("{:02x}", i).repeat(32)).unwrap()[..]).unwrap()
 109         }).collect();
 110
 111         let pubkeys = privkeys.iter().map(|secret| PublicKey::from_secret_key(&secp_ctx, secret)).collect();
 112
 113         let our_privkey = SecretKey::from_slice(&<Vec<u8>>::from_hex(&"01".repeat(32)).unwrap()[..]).unwrap();
 114         let our_id = PublicKey::from_secret_key(&secp_ctx, &our_privkey);
 115
 116         (our_privkey, our_id, privkeys, pubkeys)
 117 }
 118
 119 pub(super) fn id_to_feature_flags(id: u8) -> Vec<u8> {
 120         // Set the feature flags to the id'th odd (ie non-required) feature bit so that we can
 121         // test for it later.
 122         let idx = (id - 1) * 2 + 1;
 123         if idx > 8*3 {
 124                 vec![1 << (idx - 8*3), 0, 0, 0]
 125         } else if idx > 8*2 {
 126                 vec![1 << (idx - 8*2), 0, 0]
 127         } else if idx > 8*1 {
 128                 vec![1 << (idx - 8*1), 0]
 129         } else {
 130                 vec![1 << idx]
 131         }
 132 }
 133
 134 pub(super) fn build_line_graph() -> (
 135         Secp256k1<All>, sync::Arc<NetworkGraph<Arc<test_utils::TestLogger>>>,
 136         P2PGossipSync<sync::Arc<NetworkGraph<Arc<test_utils::TestLogger>>>, sync::Arc<test_utils::TestChainSource>, sync::Arc<test_utils::TestLogger>>,
 137         sync::Arc<test_utils::TestChainSource>, sync::Arc<test_utils::TestLogger>,
 138 ) {
 139         let secp_ctx = Secp256k1::new();
 140         let logger = Arc::new(test_utils::TestLogger::new());
 141         let chain_monitor = Arc::new(test_utils::TestChainSource::new(Network::Testnet));
 142         let network_graph = Arc::new(NetworkGraph::new(Network::Testnet, Arc::clone(&logger)));
 143         let gossip_sync = P2PGossipSync::new(Arc::clone(&network_graph), None, Arc::clone(&logger));
 144
 145         // Build network from our_id to node 19:
 146         // our_id -1(1)2- node0 -1(2)2- node1 - ... - node19
 147         let (our_privkey, _, privkeys, _) = get_nodes(&secp_ctx);
 148
 149         for (idx, (cur_privkey, next_privkey)) in core::iter::once(&our_privkey)
 150                 .chain(privkeys.iter()).zip(privkeys.iter()).enumerate() {
 151                         let cur_short_channel_id = (idx as u64) + 1;
 152                         add_channel(&gossip_sync, &secp_ctx, &cur_privkey, &next_privkey,
 153                                 ChannelFeatures::from_le_bytes(id_to_feature_flags(1)), cur_short_channel_id);
 154                         update_channel(&gossip_sync, &secp_ctx, &cur_privkey, UnsignedChannelUpdate {
 155                                 chain_hash: ChainHash::using_genesis_block(Network::Testnet),
 156                                 short_channel_id: cur_short_channel_id,
 157                                 timestamp: idx as u32,
 158                                 flags: 0,
 159                                 cltv_expiry_delta: 0,
 160                                 htlc_minimum_msat: 0,
 161                                 htlc_maximum_msat: MAX_VALUE_MSAT,
 162                                 fee_base_msat: 0,
 163                                 fee_proportional_millionths: 0,
 164                                 excess_data: Vec::new()
 165                         });
 166                         update_channel(&gossip_sync, &secp_ctx, &next_privkey, UnsignedChannelUpdate {
 167                                 chain_hash: ChainHash::using_genesis_block(Network::Testnet),
 168                                 short_channel_id: cur_short_channel_id,
 169                                 timestamp: (idx as u32)+1,
 170                                 flags: 1,
 171                                 cltv_expiry_delta: 0,
 172                                 htlc_minimum_msat: 0,
 173                                 htlc_maximum_msat: MAX_VALUE_MSAT,
 174                                 fee_base_msat: 0,
 175                                 fee_proportional_millionths: 0,
 176                                 excess_data: Vec::new()
 177                         });
 178                         add_or_update_node(&gossip_sync, &secp_ctx, &next_privkey,
 179                                 NodeFeatures::from_le_bytes(id_to_feature_flags(1)), 0);
 180                 }
 181
 182         (secp_ctx, network_graph, gossip_sync, chain_monitor, logger)
 183 }
 184
 185 pub(super) fn build_graph() -> (
 186         Secp256k1<All>,
 187         sync::Arc<NetworkGraph<Arc<test_utils::TestLogger>>>,
 188         P2PGossipSync<sync::Arc<NetworkGraph<Arc<test_utils::TestLogger>>>, sync::Arc<test_utils::TestChainSource>, sync::Arc<test_utils::TestLogger>>,
 189         sync::Arc<test_utils::TestChainSource>,
 190         sync::Arc<test_utils::TestLogger>,
 191 ) {
 192         let secp_ctx = Secp256k1::new();
 193         let logger = Arc::new(test_utils::TestLogger::new());
 194         let chain_monitor = Arc::new(test_utils::TestChainSource::new(Network::Testnet));
 195         let network_graph = Arc::new(NetworkGraph::new(Network::Testnet, Arc::clone(&logger)));
 196         let gossip_sync = P2PGossipSync::new(Arc::clone(&network_graph), None, Arc::clone(&logger));
 197         // Build network from our_id to node6:
 198         //
 199         //        -1(1)2-  node0  -1(3)2-
 200         //       /                       \
 201         // our_id -1(12)2- node7 -1(13)2--- node2
 202         //       \                       /
 203         //        -1(2)2-  node1  -1(4)2-
 204         //
 205         //
 206         // chan1  1-to-2: disabled
 207         // chan1  2-to-1: enabled, 0 fee
 208         //
 209         // chan2  1-to-2: enabled, ignored fee
 210         // chan2  2-to-1: enabled, 0 fee
 211         //
 212         // chan3  1-to-2: enabled, 0 fee
 213         // chan3  2-to-1: enabled, 100 msat fee
 214         //
 215         // chan4  1-to-2: enabled, 100% fee
 216         // chan4  2-to-1: enabled, 0 fee
 217         //
 218         // chan12 1-to-2: enabled, ignored fee
 219         // chan12 2-to-1: enabled, 0 fee
 220         //
 221         // chan13 1-to-2: enabled, 200% fee
 222         // chan13 2-to-1: enabled, 0 fee
 223         //
 224         //
 225         //       -1(5)2- node3 -1(8)2--
 226         //       |         2          |
 227         //       |       (11)         |
 228         //      /          1           \
 229         // node2--1(6)2- node4 -1(9)2--- node6 (not in global route map)
 230         //      \                      /
 231         //       -1(7)2- node5 -1(10)2-
 232         //
 233         // Channels 5, 8, 9 and 10 are private channels.
 234         //
 235         // chan5  1-to-2: enabled, 100 msat fee
 236         // chan5  2-to-1: enabled, 0 fee
 237         //
 238         // chan6  1-to-2: enabled, 0 fee
 239         // chan6  2-to-1: enabled, 0 fee
 240         //
 241         // chan7  1-to-2: enabled, 100% fee
 242         // chan7  2-to-1: enabled, 0 fee
 243         //
 244         // chan8  1-to-2: enabled, variable fee (0 then 1000 msat)
 245         // chan8  2-to-1: enabled, 0 fee
 246         //
 247         // chan9  1-to-2: enabled, 1001 msat fee
 248         // chan9  2-to-1: enabled, 0 fee
 249         //
 250         // chan10 1-to-2: enabled, 0 fee
 251         // chan10 2-to-1: enabled, 0 fee
 252         //
 253         // chan11 1-to-2: enabled, 0 fee
 254         // chan11 2-to-1: enabled, 0 fee
 255
 256         let (our_privkey, _, privkeys, _) = get_nodes(&secp_ctx);
 257
 258         add_channel(&gossip_sync, &secp_ctx, &our_privkey, &privkeys[0], ChannelFeatures::from_le_bytes(id_to_feature_flags(1)), 1);
 259         update_channel(&gossip_sync, &secp_ctx, &privkeys[0], UnsignedChannelUpdate {
 260                 chain_hash: ChainHash::using_genesis_block(Network::Testnet),
 261                 short_channel_id: 1,
 262                 timestamp: 1,
 263                 flags: 1,
 264                 cltv_expiry_delta: 0,
 265                 htlc_minimum_msat: 0,
 266                 htlc_maximum_msat: MAX_VALUE_MSAT,
 267                 fee_base_msat: 0,
 268                 fee_proportional_millionths: 0,
 269                 excess_data: Vec::new()
 270         });
 271
 272         add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[0], NodeFeatures::from_le_bytes(id_to_feature_flags(1)), 0);
 273
 274         add_channel(&gossip_sync, &secp_ctx, &our_privkey, &privkeys[1], ChannelFeatures::from_le_bytes(id_to_feature_flags(2)), 2);
 275         update_channel(&gossip_sync, &secp_ctx, &our_privkey, UnsignedChannelUpdate {
 276                 chain_hash: ChainHash::using_genesis_block(Network::Testnet),
 277                 short_channel_id: 2,
 278                 timestamp: 1,
 279                 flags: 0,
 280                 cltv_expiry_delta: (5 << 4) | 3,
 281                 htlc_minimum_msat: 0,
 282                 htlc_maximum_msat: MAX_VALUE_MSAT,
 283                 fee_base_msat: u32::max_value(),
 284                 fee_proportional_millionths: u32::max_value(),
 285                 excess_data: Vec::new()
 286         });
 287         update_channel(&gossip_sync, &secp_ctx, &privkeys[1], UnsignedChannelUpdate {
 288                 chain_hash: ChainHash::using_genesis_block(Network::Testnet),
 289                 short_channel_id: 2,
 290                 timestamp: 1,
 291                 flags: 1,
 292                 cltv_expiry_delta: 0,
 293                 htlc_minimum_msat: 0,
 294                 htlc_maximum_msat: MAX_VALUE_MSAT,
 295                 fee_base_msat: 0,
 296                 fee_proportional_millionths: 0,
 297                 excess_data: Vec::new()
 298         });
 299
 300         add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[1], NodeFeatures::from_le_bytes(id_to_feature_flags(2)), 0);
 301
 302         add_channel(&gossip_sync, &secp_ctx, &our_privkey, &privkeys[7], ChannelFeatures::from_le_bytes(id_to_feature_flags(12)), 12);
 303         update_channel(&gossip_sync, &secp_ctx, &our_privkey, UnsignedChannelUpdate {
 304                 chain_hash: ChainHash::using_genesis_block(Network::Testnet),
 305                 short_channel_id: 12,
 306                 timestamp: 1,
 307                 flags: 0,
 308                 cltv_expiry_delta: (5 << 4) | 3,
 309                 htlc_minimum_msat: 0,
 310                 htlc_maximum_msat: MAX_VALUE_MSAT,
 311                 fee_base_msat: u32::max_value(),
 312                 fee_proportional_millionths: u32::max_value(),
 313                 excess_data: Vec::new()
 314         });
 315         update_channel(&gossip_sync, &secp_ctx, &privkeys[7], UnsignedChannelUpdate {
 316                 chain_hash: ChainHash::using_genesis_block(Network::Testnet),
 317                 short_channel_id: 12,
 318                 timestamp: 1,
 319                 flags: 1,
 320                 cltv_expiry_delta: 0,
 321                 htlc_minimum_msat: 0,
 322                 htlc_maximum_msat: MAX_VALUE_MSAT,
 323                 fee_base_msat: 0,
 324                 fee_proportional_millionths: 0,
 325                 excess_data: Vec::new()
 326         });
 327
 328         add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[7], NodeFeatures::from_le_bytes(id_to_feature_flags(8)), 0);
 329
 330         add_channel(&gossip_sync, &secp_ctx, &privkeys[0], &privkeys[2], ChannelFeatures::from_le_bytes(id_to_feature_flags(3)), 3);
 331         update_channel(&gossip_sync, &secp_ctx, &privkeys[0], UnsignedChannelUpdate {
 332                 chain_hash: ChainHash::using_genesis_block(Network::Testnet),
 333                 short_channel_id: 3,
 334                 timestamp: 1,
 335                 flags: 0,
 336                 cltv_expiry_delta: (3 << 4) | 1,
 337                 htlc_minimum_msat: 0,
 338                 htlc_maximum_msat: MAX_VALUE_MSAT,
 339                 fee_base_msat: 0,
 340                 fee_proportional_millionths: 0,
 341                 excess_data: Vec::new()
 342         });
 343         update_channel(&gossip_sync, &secp_ctx, &privkeys[2], UnsignedChannelUpdate {
 344                 chain_hash: ChainHash::using_genesis_block(Network::Testnet),
 345                 short_channel_id: 3,
 346                 timestamp: 1,
 347                 flags: 1,
 348                 cltv_expiry_delta: (3 << 4) | 2,
 349                 htlc_minimum_msat: 0,
 350                 htlc_maximum_msat: MAX_VALUE_MSAT,
 351                 fee_base_msat: 100,
 352                 fee_proportional_millionths: 0,
 353                 excess_data: Vec::new()
 354         });
 355
 356         add_channel(&gossip_sync, &secp_ctx, &privkeys[1], &privkeys[2], ChannelFeatures::from_le_bytes(id_to_feature_flags(4)), 4);
 357         update_channel(&gossip_sync, &secp_ctx, &privkeys[1], UnsignedChannelUpdate {
 358                 chain_hash: ChainHash::using_genesis_block(Network::Testnet),
 359                 short_channel_id: 4,
 360                 timestamp: 1,
 361                 flags: 0,
 362                 cltv_expiry_delta: (4 << 4) | 1,
 363                 htlc_minimum_msat: 0,
 364                 htlc_maximum_msat: MAX_VALUE_MSAT,
 365                 fee_base_msat: 0,
 366                 fee_proportional_millionths: 1000000,
 367                 excess_data: Vec::new()
 368         });
 369         update_channel(&gossip_sync, &secp_ctx, &privkeys[2], UnsignedChannelUpdate {
 370                 chain_hash: ChainHash::using_genesis_block(Network::Testnet),
 371                 short_channel_id: 4,
 372                 timestamp: 1,
 373                 flags: 1,
 374                 cltv_expiry_delta: (4 << 4) | 2,
 375                 htlc_minimum_msat: 0,
 376                 htlc_maximum_msat: MAX_VALUE_MSAT,
 377                 fee_base_msat: 0,
 378                 fee_proportional_millionths: 0,
 379                 excess_data: Vec::new()
 380         });
 381
 382         add_channel(&gossip_sync, &secp_ctx, &privkeys[7], &privkeys[2], ChannelFeatures::from_le_bytes(id_to_feature_flags(13)), 13);
 383         update_channel(&gossip_sync, &secp_ctx, &privkeys[7], UnsignedChannelUpdate {
 384                 chain_hash: ChainHash::using_genesis_block(Network::Testnet),
 385                 short_channel_id: 13,
 386                 timestamp: 1,
 387                 flags: 0,
 388                 cltv_expiry_delta: (13 << 4) | 1,
 389                 htlc_minimum_msat: 0,
 390                 htlc_maximum_msat: MAX_VALUE_MSAT,
 391                 fee_base_msat: 0,
 392                 fee_proportional_millionths: 2000000,
 393                 excess_data: Vec::new()
 394         });
 395         update_channel(&gossip_sync, &secp_ctx, &privkeys[2], UnsignedChannelUpdate {
 396                 chain_hash: ChainHash::using_genesis_block(Network::Testnet),
 397                 short_channel_id: 13,
 398                 timestamp: 1,
 399                 flags: 1,
 400                 cltv_expiry_delta: (13 << 4) | 2,
 401                 htlc_minimum_msat: 0,
 402                 htlc_maximum_msat: MAX_VALUE_MSAT,
 403                 fee_base_msat: 0,
 404                 fee_proportional_millionths: 0,
 405                 excess_data: Vec::new()
 406         });
 407
 408         add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[2], NodeFeatures::from_le_bytes(id_to_feature_flags(3)), 0);
 409
 410         add_channel(&gossip_sync, &secp_ctx, &privkeys[2], &privkeys[4], ChannelFeatures::from_le_bytes(id_to_feature_flags(6)), 6);
 411         update_channel(&gossip_sync, &secp_ctx, &privkeys[2], UnsignedChannelUpdate {
 412                 chain_hash: ChainHash::using_genesis_block(Network::Testnet),
 413                 short_channel_id: 6,
 414                 timestamp: 1,
 415                 flags: 0,
 416                 cltv_expiry_delta: (6 << 4) | 1,
 417                 htlc_minimum_msat: 0,
 418                 htlc_maximum_msat: MAX_VALUE_MSAT,
 419                 fee_base_msat: 0,
 420                 fee_proportional_millionths: 0,
 421                 excess_data: Vec::new()
 422         });
 423         update_channel(&gossip_sync, &secp_ctx, &privkeys[4], UnsignedChannelUpdate {
 424                 chain_hash: ChainHash::using_genesis_block(Network::Testnet),
 425                 short_channel_id: 6,
 426                 timestamp: 1,
 427                 flags: 1,
 428                 cltv_expiry_delta: (6 << 4) | 2,
 429                 htlc_minimum_msat: 0,
 430                 htlc_maximum_msat: MAX_VALUE_MSAT,
 431                 fee_base_msat: 0,
 432                 fee_proportional_millionths: 0,
 433                 excess_data: Vec::new(),
 434         });
 435
 436         add_channel(&gossip_sync, &secp_ctx, &privkeys[4], &privkeys[3], ChannelFeatures::from_le_bytes(id_to_feature_flags(11)), 11);
 437         update_channel(&gossip_sync, &secp_ctx, &privkeys[4], UnsignedChannelUpdate {
 438                 chain_hash: ChainHash::using_genesis_block(Network::Testnet),
 439                 short_channel_id: 11,
 440                 timestamp: 1,
 441                 flags: 0,
 442                 cltv_expiry_delta: (11 << 4) | 1,
 443                 htlc_minimum_msat: 0,
 444                 htlc_maximum_msat: MAX_VALUE_MSAT,
 445                 fee_base_msat: 0,
 446                 fee_proportional_millionths: 0,
 447                 excess_data: Vec::new()
 448         });
 449         update_channel(&gossip_sync, &secp_ctx, &privkeys[3], UnsignedChannelUpdate {
 450                 chain_hash: ChainHash::using_genesis_block(Network::Testnet),
 451                 short_channel_id: 11,
 452                 timestamp: 1,
 453                 flags: 1,
 454                 cltv_expiry_delta: (11 << 4) | 2,
 455                 htlc_minimum_msat: 0,
 456                 htlc_maximum_msat: MAX_VALUE_MSAT,
 457                 fee_base_msat: 0,
 458                 fee_proportional_millionths: 0,
 459                 excess_data: Vec::new()
 460         });
 461
 462         add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[4], NodeFeatures::from_le_bytes(id_to_feature_flags(5)), 0);
 463
 464         add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[3], NodeFeatures::from_le_bytes(id_to_feature_flags(4)), 0);
 465
 466         add_channel(&gossip_sync, &secp_ctx, &privkeys[2], &privkeys[5], ChannelFeatures::from_le_bytes(id_to_feature_flags(7)), 7);
 467         update_channel(&gossip_sync, &secp_ctx, &privkeys[2], UnsignedChannelUpdate {
 468                 chain_hash: ChainHash::using_genesis_block(Network::Testnet),
 469                 short_channel_id: 7,
 470                 timestamp: 1,
 471                 flags: 0,
 472                 cltv_expiry_delta: (7 << 4) | 1,
 473                 htlc_minimum_msat: 0,
 474                 htlc_maximum_msat: MAX_VALUE_MSAT,
 475                 fee_base_msat: 0,
 476                 fee_proportional_millionths: 1000000,
 477                 excess_data: Vec::new()
 478         });
 479         update_channel(&gossip_sync, &secp_ctx, &privkeys[5], UnsignedChannelUpdate {
 480                 chain_hash: ChainHash::using_genesis_block(Network::Testnet),
 481                 short_channel_id: 7,
 482                 timestamp: 1,
 483                 flags: 1,
 484                 cltv_expiry_delta: (7 << 4) | 2,
 485                 htlc_minimum_msat: 0,
 486                 htlc_maximum_msat: MAX_VALUE_MSAT,
 487                 fee_base_msat: 0,
 488                 fee_proportional_millionths: 0,
 489                 excess_data: Vec::new()
 490         });
 491
 492         add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[5], NodeFeatures::from_le_bytes(id_to_feature_flags(6)), 0);
 493
 494         (secp_ctx, network_graph, gossip_sync, chain_monitor, logger)
 495 }