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 routing::gossip::{NetworkGraph, P2PGossipSync};
  11 use ln::features::{ChannelFeatures, NodeFeatures};
  12 use ln::msgs::{UnsignedChannelAnnouncement, ChannelAnnouncement, RoutingMessageHandler,
  13         NodeAnnouncement, UnsignedNodeAnnouncement, ChannelUpdate, UnsignedChannelUpdate, MAX_VALUE_MSAT};
  14 use util::test_utils;
  15 use util::ser::Writeable;
  16
  17 use bitcoin::hashes::sha256d::Hash as Sha256dHash;
  18 use bitcoin::hashes::Hash;
  19 use bitcoin::network::constants::Network;
  20 use bitcoin::blockdata::constants::genesis_block;
  21
  22 use hex;
  23
  24 use bitcoin::secp256k1::{PublicKey,SecretKey};
  25 use bitcoin::secp256k1::{Secp256k1, All};
  26
  27 use prelude::*;
  28 use sync::{self, Arc};
  29
  30 // Using the same keys for LN and BTC ids
  31 pub(super) 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 = PublicKey::from_secret_key(&secp_ctx, node_1_privkey);
  36         let node_id_2 = PublicKey::from_secret_key(&secp_ctx, node_2_privkey);
  37
  38         let unsigned_announcement = UnsignedChannelAnnouncement {
  39                 features,
  40                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
  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(super) 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 = 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: [0; 32],
  74                 addresses: Vec::new(),
  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(super) 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(&hex::decode(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(&hex::decode("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 genesis_hash = genesis_block(Network::Testnet).header.block_hash();
 143         let network_graph = Arc::new(NetworkGraph::new(genesis_hash, Arc::clone(&logger)));
 144         let gossip_sync = P2PGossipSync::new(Arc::clone(&network_graph), None, Arc::clone(&logger));
 145
 146         // Build network from our_id to node 19:
 147         // our_id -1(1)2- node0 -1(2)2- node1 - ... - node19
 148         let (our_privkey, _, privkeys, _) = get_nodes(&secp_ctx);
 149
 150         for (idx, (cur_privkey, next_privkey)) in core::iter::once(&our_privkey)
 151                 .chain(privkeys.iter()).zip(privkeys.iter()).enumerate() {
 152                         let cur_short_channel_id = (idx as u64) + 1;
 153                         add_channel(&gossip_sync, &secp_ctx, &cur_privkey, &next_privkey,
 154                                 ChannelFeatures::from_le_bytes(id_to_feature_flags(1)), cur_short_channel_id);
 155                         update_channel(&gossip_sync, &secp_ctx, &cur_privkey, UnsignedChannelUpdate {
 156                                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 157                                 short_channel_id: cur_short_channel_id,
 158                                 timestamp: idx as u32,
 159                                 flags: 0,
 160                                 cltv_expiry_delta: 0,
 161                                 htlc_minimum_msat: 0,
 162                                 htlc_maximum_msat: MAX_VALUE_MSAT,
 163                                 fee_base_msat: 0,
 164                                 fee_proportional_millionths: 0,
 165                                 excess_data: Vec::new()
 166                         });
 167                         update_channel(&gossip_sync, &secp_ctx, &next_privkey, UnsignedChannelUpdate {
 168                                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 169                                 short_channel_id: cur_short_channel_id,
 170                                 timestamp: (idx as u32)+1,
 171                                 flags: 1,
 172                                 cltv_expiry_delta: 0,
 173                                 htlc_minimum_msat: 0,
 174                                 htlc_maximum_msat: MAX_VALUE_MSAT,
 175                                 fee_base_msat: 0,
 176                                 fee_proportional_millionths: 0,
 177                                 excess_data: Vec::new()
 178                         });
 179                         add_or_update_node(&gossip_sync, &secp_ctx, &next_privkey,
 180                                 NodeFeatures::from_le_bytes(id_to_feature_flags(1)), 0);
 181                 }
 182
 183         (secp_ctx, network_graph, gossip_sync, chain_monitor, logger)
 184 }
 185
 186 pub(super) fn build_graph() -> (
 187         Secp256k1<All>,
 188         sync::Arc<NetworkGraph<Arc<test_utils::TestLogger>>>,
 189         P2PGossipSync<sync::Arc<NetworkGraph<Arc<test_utils::TestLogger>>>, sync::Arc<test_utils::TestChainSource>, sync::Arc<test_utils::TestLogger>>,
 190         sync::Arc<test_utils::TestChainSource>,
 191         sync::Arc<test_utils::TestLogger>,
 192 ) {
 193         let secp_ctx = Secp256k1::new();
 194         let logger = Arc::new(test_utils::TestLogger::new());
 195         let chain_monitor = Arc::new(test_utils::TestChainSource::new(Network::Testnet));
 196         let genesis_hash = genesis_block(Network::Testnet).header.block_hash();
 197         let network_graph = Arc::new(NetworkGraph::new(genesis_hash, Arc::clone(&logger)));
 198         let gossip_sync = P2PGossipSync::new(Arc::clone(&network_graph), None, Arc::clone(&logger));
 199         // Build network from our_id to node6:
 200         //
 201         //        -1(1)2-  node0  -1(3)2-
 202         //       /                       \
 203         // our_id -1(12)2- node7 -1(13)2--- node2
 204         //       \                       /
 205         //        -1(2)2-  node1  -1(4)2-
 206         //
 207         //
 208         // chan1  1-to-2: disabled
 209         // chan1  2-to-1: enabled, 0 fee
 210         //
 211         // chan2  1-to-2: enabled, ignored fee
 212         // chan2  2-to-1: enabled, 0 fee
 213         //
 214         // chan3  1-to-2: enabled, 0 fee
 215         // chan3  2-to-1: enabled, 100 msat fee
 216         //
 217         // chan4  1-to-2: enabled, 100% fee
 218         // chan4  2-to-1: enabled, 0 fee
 219         //
 220         // chan12 1-to-2: enabled, ignored fee
 221         // chan12 2-to-1: enabled, 0 fee
 222         //
 223         // chan13 1-to-2: enabled, 200% fee
 224         // chan13 2-to-1: enabled, 0 fee
 225         //
 226         //
 227         //       -1(5)2- node3 -1(8)2--
 228         //       |         2          |
 229         //       |       (11)         |
 230         //      /          1           \
 231         // node2--1(6)2- node4 -1(9)2--- node6 (not in global route map)
 232         //      \                      /
 233         //       -1(7)2- node5 -1(10)2-
 234         //
 235         // Channels 5, 8, 9 and 10 are private channels.
 236         //
 237         // chan5  1-to-2: enabled, 100 msat fee
 238         // chan5  2-to-1: enabled, 0 fee
 239         //
 240         // chan6  1-to-2: enabled, 0 fee
 241         // chan6  2-to-1: enabled, 0 fee
 242         //
 243         // chan7  1-to-2: enabled, 100% fee
 244         // chan7  2-to-1: enabled, 0 fee
 245         //
 246         // chan8  1-to-2: enabled, variable fee (0 then 1000 msat)
 247         // chan8  2-to-1: enabled, 0 fee
 248         //
 249         // chan9  1-to-2: enabled, 1001 msat fee
 250         // chan9  2-to-1: enabled, 0 fee
 251         //
 252         // chan10 1-to-2: enabled, 0 fee
 253         // chan10 2-to-1: enabled, 0 fee
 254         //
 255         // chan11 1-to-2: enabled, 0 fee
 256         // chan11 2-to-1: enabled, 0 fee
 257
 258         let (our_privkey, _, privkeys, _) = get_nodes(&secp_ctx);
 259
 260         add_channel(&gossip_sync, &secp_ctx, &our_privkey, &privkeys[0], ChannelFeatures::from_le_bytes(id_to_feature_flags(1)), 1);
 261         update_channel(&gossip_sync, &secp_ctx, &privkeys[0], UnsignedChannelUpdate {
 262                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 263                 short_channel_id: 1,
 264                 timestamp: 1,
 265                 flags: 1,
 266                 cltv_expiry_delta: 0,
 267                 htlc_minimum_msat: 0,
 268                 htlc_maximum_msat: MAX_VALUE_MSAT,
 269                 fee_base_msat: 0,
 270                 fee_proportional_millionths: 0,
 271                 excess_data: Vec::new()
 272         });
 273
 274         add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[0], NodeFeatures::from_le_bytes(id_to_feature_flags(1)), 0);
 275
 276         add_channel(&gossip_sync, &secp_ctx, &our_privkey, &privkeys[1], ChannelFeatures::from_le_bytes(id_to_feature_flags(2)), 2);
 277         update_channel(&gossip_sync, &secp_ctx, &our_privkey, UnsignedChannelUpdate {
 278                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 279                 short_channel_id: 2,
 280                 timestamp: 1,
 281                 flags: 0,
 282                 cltv_expiry_delta: (5 << 4) | 3,
 283                 htlc_minimum_msat: 0,
 284                 htlc_maximum_msat: MAX_VALUE_MSAT,
 285                 fee_base_msat: u32::max_value(),
 286                 fee_proportional_millionths: u32::max_value(),
 287                 excess_data: Vec::new()
 288         });
 289         update_channel(&gossip_sync, &secp_ctx, &privkeys[1], UnsignedChannelUpdate {
 290                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 291                 short_channel_id: 2,
 292                 timestamp: 1,
 293                 flags: 1,
 294                 cltv_expiry_delta: 0,
 295                 htlc_minimum_msat: 0,
 296                 htlc_maximum_msat: MAX_VALUE_MSAT,
 297                 fee_base_msat: 0,
 298                 fee_proportional_millionths: 0,
 299                 excess_data: Vec::new()
 300         });
 301
 302         add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[1], NodeFeatures::from_le_bytes(id_to_feature_flags(2)), 0);
 303
 304         add_channel(&gossip_sync, &secp_ctx, &our_privkey, &privkeys[7], ChannelFeatures::from_le_bytes(id_to_feature_flags(12)), 12);
 305         update_channel(&gossip_sync, &secp_ctx, &our_privkey, UnsignedChannelUpdate {
 306                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 307                 short_channel_id: 12,
 308                 timestamp: 1,
 309                 flags: 0,
 310                 cltv_expiry_delta: (5 << 4) | 3,
 311                 htlc_minimum_msat: 0,
 312                 htlc_maximum_msat: MAX_VALUE_MSAT,
 313                 fee_base_msat: u32::max_value(),
 314                 fee_proportional_millionths: u32::max_value(),
 315                 excess_data: Vec::new()
 316         });
 317         update_channel(&gossip_sync, &secp_ctx, &privkeys[7], UnsignedChannelUpdate {
 318                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 319                 short_channel_id: 12,
 320                 timestamp: 1,
 321                 flags: 1,
 322                 cltv_expiry_delta: 0,
 323                 htlc_minimum_msat: 0,
 324                 htlc_maximum_msat: MAX_VALUE_MSAT,
 325                 fee_base_msat: 0,
 326                 fee_proportional_millionths: 0,
 327                 excess_data: Vec::new()
 328         });
 329
 330         add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[7], NodeFeatures::from_le_bytes(id_to_feature_flags(8)), 0);
 331
 332         add_channel(&gossip_sync, &secp_ctx, &privkeys[0], &privkeys[2], ChannelFeatures::from_le_bytes(id_to_feature_flags(3)), 3);
 333         update_channel(&gossip_sync, &secp_ctx, &privkeys[0], UnsignedChannelUpdate {
 334                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 335                 short_channel_id: 3,
 336                 timestamp: 1,
 337                 flags: 0,
 338                 cltv_expiry_delta: (3 << 4) | 1,
 339                 htlc_minimum_msat: 0,
 340                 htlc_maximum_msat: MAX_VALUE_MSAT,
 341                 fee_base_msat: 0,
 342                 fee_proportional_millionths: 0,
 343                 excess_data: Vec::new()
 344         });
 345         update_channel(&gossip_sync, &secp_ctx, &privkeys[2], UnsignedChannelUpdate {
 346                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 347                 short_channel_id: 3,
 348                 timestamp: 1,
 349                 flags: 1,
 350                 cltv_expiry_delta: (3 << 4) | 2,
 351                 htlc_minimum_msat: 0,
 352                 htlc_maximum_msat: MAX_VALUE_MSAT,
 353                 fee_base_msat: 100,
 354                 fee_proportional_millionths: 0,
 355                 excess_data: Vec::new()
 356         });
 357
 358         add_channel(&gossip_sync, &secp_ctx, &privkeys[1], &privkeys[2], ChannelFeatures::from_le_bytes(id_to_feature_flags(4)), 4);
 359         update_channel(&gossip_sync, &secp_ctx, &privkeys[1], UnsignedChannelUpdate {
 360                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 361                 short_channel_id: 4,
 362                 timestamp: 1,
 363                 flags: 0,
 364                 cltv_expiry_delta: (4 << 4) | 1,
 365                 htlc_minimum_msat: 0,
 366                 htlc_maximum_msat: MAX_VALUE_MSAT,
 367                 fee_base_msat: 0,
 368                 fee_proportional_millionths: 1000000,
 369                 excess_data: Vec::new()
 370         });
 371         update_channel(&gossip_sync, &secp_ctx, &privkeys[2], UnsignedChannelUpdate {
 372                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 373                 short_channel_id: 4,
 374                 timestamp: 1,
 375                 flags: 1,
 376                 cltv_expiry_delta: (4 << 4) | 2,
 377                 htlc_minimum_msat: 0,
 378                 htlc_maximum_msat: MAX_VALUE_MSAT,
 379                 fee_base_msat: 0,
 380                 fee_proportional_millionths: 0,
 381                 excess_data: Vec::new()
 382         });
 383
 384         add_channel(&gossip_sync, &secp_ctx, &privkeys[7], &privkeys[2], ChannelFeatures::from_le_bytes(id_to_feature_flags(13)), 13);
 385         update_channel(&gossip_sync, &secp_ctx, &privkeys[7], UnsignedChannelUpdate {
 386                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 387                 short_channel_id: 13,
 388                 timestamp: 1,
 389                 flags: 0,
 390                 cltv_expiry_delta: (13 << 4) | 1,
 391                 htlc_minimum_msat: 0,
 392                 htlc_maximum_msat: MAX_VALUE_MSAT,
 393                 fee_base_msat: 0,
 394                 fee_proportional_millionths: 2000000,
 395                 excess_data: Vec::new()
 396         });
 397         update_channel(&gossip_sync, &secp_ctx, &privkeys[2], UnsignedChannelUpdate {
 398                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 399                 short_channel_id: 13,
 400                 timestamp: 1,
 401                 flags: 1,
 402                 cltv_expiry_delta: (13 << 4) | 2,
 403                 htlc_minimum_msat: 0,
 404                 htlc_maximum_msat: MAX_VALUE_MSAT,
 405                 fee_base_msat: 0,
 406                 fee_proportional_millionths: 0,
 407                 excess_data: Vec::new()
 408         });
 409
 410         add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[2], NodeFeatures::from_le_bytes(id_to_feature_flags(3)), 0);
 411
 412         add_channel(&gossip_sync, &secp_ctx, &privkeys[2], &privkeys[4], ChannelFeatures::from_le_bytes(id_to_feature_flags(6)), 6);
 413         update_channel(&gossip_sync, &secp_ctx, &privkeys[2], UnsignedChannelUpdate {
 414                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 415                 short_channel_id: 6,
 416                 timestamp: 1,
 417                 flags: 0,
 418                 cltv_expiry_delta: (6 << 4) | 1,
 419                 htlc_minimum_msat: 0,
 420                 htlc_maximum_msat: MAX_VALUE_MSAT,
 421                 fee_base_msat: 0,
 422                 fee_proportional_millionths: 0,
 423                 excess_data: Vec::new()
 424         });
 425         update_channel(&gossip_sync, &secp_ctx, &privkeys[4], UnsignedChannelUpdate {
 426                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 427                 short_channel_id: 6,
 428                 timestamp: 1,
 429                 flags: 1,
 430                 cltv_expiry_delta: (6 << 4) | 2,
 431                 htlc_minimum_msat: 0,
 432                 htlc_maximum_msat: MAX_VALUE_MSAT,
 433                 fee_base_msat: 0,
 434                 fee_proportional_millionths: 0,
 435                 excess_data: Vec::new(),
 436         });
 437
 438         add_channel(&gossip_sync, &secp_ctx, &privkeys[4], &privkeys[3], ChannelFeatures::from_le_bytes(id_to_feature_flags(11)), 11);
 439         update_channel(&gossip_sync, &secp_ctx, &privkeys[4], UnsignedChannelUpdate {
 440                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 441                 short_channel_id: 11,
 442                 timestamp: 1,
 443                 flags: 0,
 444                 cltv_expiry_delta: (11 << 4) | 1,
 445                 htlc_minimum_msat: 0,
 446                 htlc_maximum_msat: MAX_VALUE_MSAT,
 447                 fee_base_msat: 0,
 448                 fee_proportional_millionths: 0,
 449                 excess_data: Vec::new()
 450         });
 451         update_channel(&gossip_sync, &secp_ctx, &privkeys[3], UnsignedChannelUpdate {
 452                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 453                 short_channel_id: 11,
 454                 timestamp: 1,
 455                 flags: 1,
 456                 cltv_expiry_delta: (11 << 4) | 2,
 457                 htlc_minimum_msat: 0,
 458                 htlc_maximum_msat: MAX_VALUE_MSAT,
 459                 fee_base_msat: 0,
 460                 fee_proportional_millionths: 0,
 461                 excess_data: Vec::new()
 462         });
 463
 464         add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[4], NodeFeatures::from_le_bytes(id_to_feature_flags(5)), 0);
 465
 466         add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[3], NodeFeatures::from_le_bytes(id_to_feature_flags(4)), 0);
 467
 468         add_channel(&gossip_sync, &secp_ctx, &privkeys[2], &privkeys[5], ChannelFeatures::from_le_bytes(id_to_feature_flags(7)), 7);
 469         update_channel(&gossip_sync, &secp_ctx, &privkeys[2], UnsignedChannelUpdate {
 470                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 471                 short_channel_id: 7,
 472                 timestamp: 1,
 473                 flags: 0,
 474                 cltv_expiry_delta: (7 << 4) | 1,
 475                 htlc_minimum_msat: 0,
 476                 htlc_maximum_msat: MAX_VALUE_MSAT,
 477                 fee_base_msat: 0,
 478                 fee_proportional_millionths: 1000000,
 479                 excess_data: Vec::new()
 480         });
 481         update_channel(&gossip_sync, &secp_ctx, &privkeys[5], UnsignedChannelUpdate {
 482                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 483                 short_channel_id: 7,
 484                 timestamp: 1,
 485                 flags: 1,
 486                 cltv_expiry_delta: (7 << 4) | 2,
 487                 htlc_minimum_msat: 0,
 488                 htlc_maximum_msat: MAX_VALUE_MSAT,
 489                 fee_base_msat: 0,
 490                 fee_proportional_millionths: 0,
 491                 excess_data: Vec::new()
 492         });
 493
 494         add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[5], NodeFeatures::from_le_bytes(id_to_feature_flags(6)), 0);
 495
 496         (secp_ctx, network_graph, gossip_sync, chain_monitor, logger)
 497 }