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, P2PGossipSync};
  11 use crate::ln::features::{ChannelFeatures, NodeFeatures};
  12 use crate::ln::msgs::{UnsignedChannelAnnouncement, ChannelAnnouncement, RoutingMessageHandler,
  13         NodeAnnouncement, UnsignedNodeAnnouncement, ChannelUpdate, UnsignedChannelUpdate, MAX_VALUE_MSAT};
  14 use crate::util::test_utils;
  15 use crate::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 crate::prelude::*;
  28 use crate::sync::{self, Arc};
  29
  30 use crate::routing::gossip::NodeId;
  31
  32 // Using the same keys for LN and BTC ids
  33 pub(super) fn add_channel(
  34         gossip_sync: &P2PGossipSync<Arc<NetworkGraph<Arc<test_utils::TestLogger>>>, Arc<test_utils::TestChainSource>, Arc<test_utils::TestLogger>>,
  35         secp_ctx: &Secp256k1<All>, node_1_privkey: &SecretKey, node_2_privkey: &SecretKey, features: ChannelFeatures, short_channel_id: u64
  36 ) {
  37         let node_id_1 = NodeId::from_pubkey(&PublicKey::from_secret_key(&secp_ctx, node_1_privkey));
  38         let node_id_2 = NodeId::from_pubkey(&PublicKey::from_secret_key(&secp_ctx, node_2_privkey));
  39
  40         let unsigned_announcement = UnsignedChannelAnnouncement {
  41                 features,
  42                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
  43                 short_channel_id,
  44                 node_id_1,
  45                 node_id_2,
  46                 bitcoin_key_1: node_id_1,
  47                 bitcoin_key_2: node_id_2,
  48                 excess_data: Vec::new(),
  49         };
  50
  51         let msghash = hash_to_message!(&Sha256dHash::hash(&unsigned_announcement.encode()[..])[..]);
  52         let valid_announcement = ChannelAnnouncement {
  53                 node_signature_1: secp_ctx.sign_ecdsa(&msghash, node_1_privkey),
  54                 node_signature_2: secp_ctx.sign_ecdsa(&msghash, node_2_privkey),
  55                 bitcoin_signature_1: secp_ctx.sign_ecdsa(&msghash, node_1_privkey),
  56                 bitcoin_signature_2: secp_ctx.sign_ecdsa(&msghash, node_2_privkey),
  57                 contents: unsigned_announcement.clone(),
  58         };
  59         match gossip_sync.handle_channel_announcement(&valid_announcement) {
  60                 Ok(res) => assert!(res),
  61                 _ => panic!()
  62         };
  63 }
  64
  65 pub(super) fn add_or_update_node(
  66         gossip_sync: &P2PGossipSync<Arc<NetworkGraph<Arc<test_utils::TestLogger>>>, Arc<test_utils::TestChainSource>, Arc<test_utils::TestLogger>>,
  67         secp_ctx: &Secp256k1<All>, node_privkey: &SecretKey, features: NodeFeatures, timestamp: u32
  68 ) {
  69         let node_id = PublicKey::from_secret_key(&secp_ctx, node_privkey);
  70         let unsigned_announcement = UnsignedNodeAnnouncement {
  71                 features,
  72                 timestamp,
  73                 node_id,
  74                 rgb: [0; 3],
  75                 alias: [0; 32],
  76                 addresses: Vec::new(),
  77                 excess_address_data: Vec::new(),
  78                 excess_data: Vec::new(),
  79         };
  80         let msghash = hash_to_message!(&Sha256dHash::hash(&unsigned_announcement.encode()[..])[..]);
  81         let valid_announcement = NodeAnnouncement {
  82                 signature: secp_ctx.sign_ecdsa(&msghash, node_privkey),
  83                 contents: unsigned_announcement.clone()
  84         };
  85
  86         match gossip_sync.handle_node_announcement(&valid_announcement) {
  87                 Ok(_) => (),
  88                 Err(_) => panic!()
  89         };
  90 }
  91
  92 pub(super) fn update_channel(
  93         gossip_sync: &P2PGossipSync<Arc<NetworkGraph<Arc<test_utils::TestLogger>>>, Arc<test_utils::TestChainSource>, Arc<test_utils::TestLogger>>,
  94         secp_ctx: &Secp256k1<All>, node_privkey: &SecretKey, update: UnsignedChannelUpdate
  95 ) {
  96         let msghash = hash_to_message!(&Sha256dHash::hash(&update.encode()[..])[..]);
  97         let valid_channel_update = ChannelUpdate {
  98                 signature: secp_ctx.sign_ecdsa(&msghash, node_privkey),
  99                 contents: update.clone()
 100         };
 101
 102         match gossip_sync.handle_channel_update(&valid_channel_update) {
 103                 Ok(res) => assert!(res),
 104                 Err(_) => panic!()
 105         };
 106 }
 107
 108 pub(super) fn get_nodes(secp_ctx: &Secp256k1<All>) -> (SecretKey, PublicKey, Vec<SecretKey>, Vec<PublicKey>) {
 109         let privkeys: Vec<SecretKey> = (2..22).map(|i| {
 110                 SecretKey::from_slice(&hex::decode(format!("{:02x}", i).repeat(32)).unwrap()[..]).unwrap()
 111         }).collect();
 112
 113         let pubkeys = privkeys.iter().map(|secret| PublicKey::from_secret_key(&secp_ctx, secret)).collect();
 114
 115         let our_privkey = SecretKey::from_slice(&hex::decode("01".repeat(32)).unwrap()[..]).unwrap();
 116         let our_id = PublicKey::from_secret_key(&secp_ctx, &our_privkey);
 117
 118         (our_privkey, our_id, privkeys, pubkeys)
 119 }
 120
 121 pub(super) fn id_to_feature_flags(id: u8) -> Vec<u8> {
 122         // Set the feature flags to the id'th odd (ie non-required) feature bit so that we can
 123         // test for it later.
 124         let idx = (id - 1) * 2 + 1;
 125         if idx > 8*3 {
 126                 vec![1 << (idx - 8*3), 0, 0, 0]
 127         } else if idx > 8*2 {
 128                 vec![1 << (idx - 8*2), 0, 0]
 129         } else if idx > 8*1 {
 130                 vec![1 << (idx - 8*1), 0]
 131         } else {
 132                 vec![1 << idx]
 133         }
 134 }
 135
 136 pub(super) fn build_line_graph() -> (
 137         Secp256k1<All>, sync::Arc<NetworkGraph<Arc<test_utils::TestLogger>>>,
 138         P2PGossipSync<sync::Arc<NetworkGraph<Arc<test_utils::TestLogger>>>, sync::Arc<test_utils::TestChainSource>, sync::Arc<test_utils::TestLogger>>,
 139         sync::Arc<test_utils::TestChainSource>, sync::Arc<test_utils::TestLogger>,
 140 ) {
 141         let secp_ctx = Secp256k1::new();
 142         let logger = Arc::new(test_utils::TestLogger::new());
 143         let chain_monitor = Arc::new(test_utils::TestChainSource::new(Network::Testnet));
 144         let genesis_hash = genesis_block(Network::Testnet).header.block_hash();
 145         let network_graph = Arc::new(NetworkGraph::new(genesis_hash, Arc::clone(&logger)));
 146         let gossip_sync = P2PGossipSync::new(Arc::clone(&network_graph), None, Arc::clone(&logger));
 147
 148         // Build network from our_id to node 19:
 149         // our_id -1(1)2- node0 -1(2)2- node1 - ... - node19
 150         let (our_privkey, _, privkeys, _) = get_nodes(&secp_ctx);
 151
 152         for (idx, (cur_privkey, next_privkey)) in core::iter::once(&our_privkey)
 153                 .chain(privkeys.iter()).zip(privkeys.iter()).enumerate() {
 154                         let cur_short_channel_id = (idx as u64) + 1;
 155                         add_channel(&gossip_sync, &secp_ctx, &cur_privkey, &next_privkey,
 156                                 ChannelFeatures::from_le_bytes(id_to_feature_flags(1)), cur_short_channel_id);
 157                         update_channel(&gossip_sync, &secp_ctx, &cur_privkey, UnsignedChannelUpdate {
 158                                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 159                                 short_channel_id: cur_short_channel_id,
 160                                 timestamp: idx as u32,
 161                                 flags: 0,
 162                                 cltv_expiry_delta: 0,
 163                                 htlc_minimum_msat: 0,
 164                                 htlc_maximum_msat: MAX_VALUE_MSAT,
 165                                 fee_base_msat: 0,
 166                                 fee_proportional_millionths: 0,
 167                                 excess_data: Vec::new()
 168                         });
 169                         update_channel(&gossip_sync, &secp_ctx, &next_privkey, UnsignedChannelUpdate {
 170                                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 171                                 short_channel_id: cur_short_channel_id,
 172                                 timestamp: (idx as u32)+1,
 173                                 flags: 1,
 174                                 cltv_expiry_delta: 0,
 175                                 htlc_minimum_msat: 0,
 176                                 htlc_maximum_msat: MAX_VALUE_MSAT,
 177                                 fee_base_msat: 0,
 178                                 fee_proportional_millionths: 0,
 179                                 excess_data: Vec::new()
 180                         });
 181                         add_or_update_node(&gossip_sync, &secp_ctx, &next_privkey,
 182                                 NodeFeatures::from_le_bytes(id_to_feature_flags(1)), 0);
 183                 }
 184
 185         (secp_ctx, network_graph, gossip_sync, chain_monitor, logger)
 186 }
 187
 188 pub(super) fn build_graph() -> (
 189         Secp256k1<All>,
 190         sync::Arc<NetworkGraph<Arc<test_utils::TestLogger>>>,
 191         P2PGossipSync<sync::Arc<NetworkGraph<Arc<test_utils::TestLogger>>>, sync::Arc<test_utils::TestChainSource>, sync::Arc<test_utils::TestLogger>>,
 192         sync::Arc<test_utils::TestChainSource>,
 193         sync::Arc<test_utils::TestLogger>,
 194 ) {
 195         let secp_ctx = Secp256k1::new();
 196         let logger = Arc::new(test_utils::TestLogger::new());
 197         let chain_monitor = Arc::new(test_utils::TestChainSource::new(Network::Testnet));
 198         let genesis_hash = genesis_block(Network::Testnet).header.block_hash();
 199         let network_graph = Arc::new(NetworkGraph::new(genesis_hash, Arc::clone(&logger)));
 200         let gossip_sync = P2PGossipSync::new(Arc::clone(&network_graph), None, Arc::clone(&logger));
 201         // Build network from our_id to node6:
 202         //
 203         //        -1(1)2-  node0  -1(3)2-
 204         //       /                       \
 205         // our_id -1(12)2- node7 -1(13)2--- node2
 206         //       \                       /
 207         //        -1(2)2-  node1  -1(4)2-
 208         //
 209         //
 210         // chan1  1-to-2: disabled
 211         // chan1  2-to-1: enabled, 0 fee
 212         //
 213         // chan2  1-to-2: enabled, ignored fee
 214         // chan2  2-to-1: enabled, 0 fee
 215         //
 216         // chan3  1-to-2: enabled, 0 fee
 217         // chan3  2-to-1: enabled, 100 msat fee
 218         //
 219         // chan4  1-to-2: enabled, 100% fee
 220         // chan4  2-to-1: enabled, 0 fee
 221         //
 222         // chan12 1-to-2: enabled, ignored fee
 223         // chan12 2-to-1: enabled, 0 fee
 224         //
 225         // chan13 1-to-2: enabled, 200% fee
 226         // chan13 2-to-1: enabled, 0 fee
 227         //
 228         //
 229         //       -1(5)2- node3 -1(8)2--
 230         //       |         2          |
 231         //       |       (11)         |
 232         //      /          1           \
 233         // node2--1(6)2- node4 -1(9)2--- node6 (not in global route map)
 234         //      \                      /
 235         //       -1(7)2- node5 -1(10)2-
 236         //
 237         // Channels 5, 8, 9 and 10 are private channels.
 238         //
 239         // chan5  1-to-2: enabled, 100 msat fee
 240         // chan5  2-to-1: enabled, 0 fee
 241         //
 242         // chan6  1-to-2: enabled, 0 fee
 243         // chan6  2-to-1: enabled, 0 fee
 244         //
 245         // chan7  1-to-2: enabled, 100% fee
 246         // chan7  2-to-1: enabled, 0 fee
 247         //
 248         // chan8  1-to-2: enabled, variable fee (0 then 1000 msat)
 249         // chan8  2-to-1: enabled, 0 fee
 250         //
 251         // chan9  1-to-2: enabled, 1001 msat fee
 252         // chan9  2-to-1: enabled, 0 fee
 253         //
 254         // chan10 1-to-2: enabled, 0 fee
 255         // chan10 2-to-1: enabled, 0 fee
 256         //
 257         // chan11 1-to-2: enabled, 0 fee
 258         // chan11 2-to-1: enabled, 0 fee
 259
 260         let (our_privkey, _, privkeys, _) = get_nodes(&secp_ctx);
 261
 262         add_channel(&gossip_sync, &secp_ctx, &our_privkey, &privkeys[0], ChannelFeatures::from_le_bytes(id_to_feature_flags(1)), 1);
 263         update_channel(&gossip_sync, &secp_ctx, &privkeys[0], UnsignedChannelUpdate {
 264                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 265                 short_channel_id: 1,
 266                 timestamp: 1,
 267                 flags: 1,
 268                 cltv_expiry_delta: 0,
 269                 htlc_minimum_msat: 0,
 270                 htlc_maximum_msat: MAX_VALUE_MSAT,
 271                 fee_base_msat: 0,
 272                 fee_proportional_millionths: 0,
 273                 excess_data: Vec::new()
 274         });
 275
 276         add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[0], NodeFeatures::from_le_bytes(id_to_feature_flags(1)), 0);
 277
 278         add_channel(&gossip_sync, &secp_ctx, &our_privkey, &privkeys[1], ChannelFeatures::from_le_bytes(id_to_feature_flags(2)), 2);
 279         update_channel(&gossip_sync, &secp_ctx, &our_privkey, UnsignedChannelUpdate {
 280                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 281                 short_channel_id: 2,
 282                 timestamp: 1,
 283                 flags: 0,
 284                 cltv_expiry_delta: (5 << 4) | 3,
 285                 htlc_minimum_msat: 0,
 286                 htlc_maximum_msat: MAX_VALUE_MSAT,
 287                 fee_base_msat: u32::max_value(),
 288                 fee_proportional_millionths: u32::max_value(),
 289                 excess_data: Vec::new()
 290         });
 291         update_channel(&gossip_sync, &secp_ctx, &privkeys[1], UnsignedChannelUpdate {
 292                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 293                 short_channel_id: 2,
 294                 timestamp: 1,
 295                 flags: 1,
 296                 cltv_expiry_delta: 0,
 297                 htlc_minimum_msat: 0,
 298                 htlc_maximum_msat: MAX_VALUE_MSAT,
 299                 fee_base_msat: 0,
 300                 fee_proportional_millionths: 0,
 301                 excess_data: Vec::new()
 302         });
 303
 304         add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[1], NodeFeatures::from_le_bytes(id_to_feature_flags(2)), 0);
 305
 306         add_channel(&gossip_sync, &secp_ctx, &our_privkey, &privkeys[7], ChannelFeatures::from_le_bytes(id_to_feature_flags(12)), 12);
 307         update_channel(&gossip_sync, &secp_ctx, &our_privkey, UnsignedChannelUpdate {
 308                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 309                 short_channel_id: 12,
 310                 timestamp: 1,
 311                 flags: 0,
 312                 cltv_expiry_delta: (5 << 4) | 3,
 313                 htlc_minimum_msat: 0,
 314                 htlc_maximum_msat: MAX_VALUE_MSAT,
 315                 fee_base_msat: u32::max_value(),
 316                 fee_proportional_millionths: u32::max_value(),
 317                 excess_data: Vec::new()
 318         });
 319         update_channel(&gossip_sync, &secp_ctx, &privkeys[7], UnsignedChannelUpdate {
 320                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 321                 short_channel_id: 12,
 322                 timestamp: 1,
 323                 flags: 1,
 324                 cltv_expiry_delta: 0,
 325                 htlc_minimum_msat: 0,
 326                 htlc_maximum_msat: MAX_VALUE_MSAT,
 327                 fee_base_msat: 0,
 328                 fee_proportional_millionths: 0,
 329                 excess_data: Vec::new()
 330         });
 331
 332         add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[7], NodeFeatures::from_le_bytes(id_to_feature_flags(8)), 0);
 333
 334         add_channel(&gossip_sync, &secp_ctx, &privkeys[0], &privkeys[2], ChannelFeatures::from_le_bytes(id_to_feature_flags(3)), 3);
 335         update_channel(&gossip_sync, &secp_ctx, &privkeys[0], UnsignedChannelUpdate {
 336                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 337                 short_channel_id: 3,
 338                 timestamp: 1,
 339                 flags: 0,
 340                 cltv_expiry_delta: (3 << 4) | 1,
 341                 htlc_minimum_msat: 0,
 342                 htlc_maximum_msat: MAX_VALUE_MSAT,
 343                 fee_base_msat: 0,
 344                 fee_proportional_millionths: 0,
 345                 excess_data: Vec::new()
 346         });
 347         update_channel(&gossip_sync, &secp_ctx, &privkeys[2], UnsignedChannelUpdate {
 348                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 349                 short_channel_id: 3,
 350                 timestamp: 1,
 351                 flags: 1,
 352                 cltv_expiry_delta: (3 << 4) | 2,
 353                 htlc_minimum_msat: 0,
 354                 htlc_maximum_msat: MAX_VALUE_MSAT,
 355                 fee_base_msat: 100,
 356                 fee_proportional_millionths: 0,
 357                 excess_data: Vec::new()
 358         });
 359
 360         add_channel(&gossip_sync, &secp_ctx, &privkeys[1], &privkeys[2], ChannelFeatures::from_le_bytes(id_to_feature_flags(4)), 4);
 361         update_channel(&gossip_sync, &secp_ctx, &privkeys[1], UnsignedChannelUpdate {
 362                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 363                 short_channel_id: 4,
 364                 timestamp: 1,
 365                 flags: 0,
 366                 cltv_expiry_delta: (4 << 4) | 1,
 367                 htlc_minimum_msat: 0,
 368                 htlc_maximum_msat: MAX_VALUE_MSAT,
 369                 fee_base_msat: 0,
 370                 fee_proportional_millionths: 1000000,
 371                 excess_data: Vec::new()
 372         });
 373         update_channel(&gossip_sync, &secp_ctx, &privkeys[2], UnsignedChannelUpdate {
 374                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 375                 short_channel_id: 4,
 376                 timestamp: 1,
 377                 flags: 1,
 378                 cltv_expiry_delta: (4 << 4) | 2,
 379                 htlc_minimum_msat: 0,
 380                 htlc_maximum_msat: MAX_VALUE_MSAT,
 381                 fee_base_msat: 0,
 382                 fee_proportional_millionths: 0,
 383                 excess_data: Vec::new()
 384         });
 385
 386         add_channel(&gossip_sync, &secp_ctx, &privkeys[7], &privkeys[2], ChannelFeatures::from_le_bytes(id_to_feature_flags(13)), 13);
 387         update_channel(&gossip_sync, &secp_ctx, &privkeys[7], UnsignedChannelUpdate {
 388                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 389                 short_channel_id: 13,
 390                 timestamp: 1,
 391                 flags: 0,
 392                 cltv_expiry_delta: (13 << 4) | 1,
 393                 htlc_minimum_msat: 0,
 394                 htlc_maximum_msat: MAX_VALUE_MSAT,
 395                 fee_base_msat: 0,
 396                 fee_proportional_millionths: 2000000,
 397                 excess_data: Vec::new()
 398         });
 399         update_channel(&gossip_sync, &secp_ctx, &privkeys[2], UnsignedChannelUpdate {
 400                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 401                 short_channel_id: 13,
 402                 timestamp: 1,
 403                 flags: 1,
 404                 cltv_expiry_delta: (13 << 4) | 2,
 405                 htlc_minimum_msat: 0,
 406                 htlc_maximum_msat: MAX_VALUE_MSAT,
 407                 fee_base_msat: 0,
 408                 fee_proportional_millionths: 0,
 409                 excess_data: Vec::new()
 410         });
 411
 412         add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[2], NodeFeatures::from_le_bytes(id_to_feature_flags(3)), 0);
 413
 414         add_channel(&gossip_sync, &secp_ctx, &privkeys[2], &privkeys[4], ChannelFeatures::from_le_bytes(id_to_feature_flags(6)), 6);
 415         update_channel(&gossip_sync, &secp_ctx, &privkeys[2], UnsignedChannelUpdate {
 416                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 417                 short_channel_id: 6,
 418                 timestamp: 1,
 419                 flags: 0,
 420                 cltv_expiry_delta: (6 << 4) | 1,
 421                 htlc_minimum_msat: 0,
 422                 htlc_maximum_msat: MAX_VALUE_MSAT,
 423                 fee_base_msat: 0,
 424                 fee_proportional_millionths: 0,
 425                 excess_data: Vec::new()
 426         });
 427         update_channel(&gossip_sync, &secp_ctx, &privkeys[4], UnsignedChannelUpdate {
 428                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 429                 short_channel_id: 6,
 430                 timestamp: 1,
 431                 flags: 1,
 432                 cltv_expiry_delta: (6 << 4) | 2,
 433                 htlc_minimum_msat: 0,
 434                 htlc_maximum_msat: MAX_VALUE_MSAT,
 435                 fee_base_msat: 0,
 436                 fee_proportional_millionths: 0,
 437                 excess_data: Vec::new(),
 438         });
 439
 440         add_channel(&gossip_sync, &secp_ctx, &privkeys[4], &privkeys[3], ChannelFeatures::from_le_bytes(id_to_feature_flags(11)), 11);
 441         update_channel(&gossip_sync, &secp_ctx, &privkeys[4], UnsignedChannelUpdate {
 442                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 443                 short_channel_id: 11,
 444                 timestamp: 1,
 445                 flags: 0,
 446                 cltv_expiry_delta: (11 << 4) | 1,
 447                 htlc_minimum_msat: 0,
 448                 htlc_maximum_msat: MAX_VALUE_MSAT,
 449                 fee_base_msat: 0,
 450                 fee_proportional_millionths: 0,
 451                 excess_data: Vec::new()
 452         });
 453         update_channel(&gossip_sync, &secp_ctx, &privkeys[3], UnsignedChannelUpdate {
 454                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 455                 short_channel_id: 11,
 456                 timestamp: 1,
 457                 flags: 1,
 458                 cltv_expiry_delta: (11 << 4) | 2,
 459                 htlc_minimum_msat: 0,
 460                 htlc_maximum_msat: MAX_VALUE_MSAT,
 461                 fee_base_msat: 0,
 462                 fee_proportional_millionths: 0,
 463                 excess_data: Vec::new()
 464         });
 465
 466         add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[4], NodeFeatures::from_le_bytes(id_to_feature_flags(5)), 0);
 467
 468         add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[3], NodeFeatures::from_le_bytes(id_to_feature_flags(4)), 0);
 469
 470         add_channel(&gossip_sync, &secp_ctx, &privkeys[2], &privkeys[5], ChannelFeatures::from_le_bytes(id_to_feature_flags(7)), 7);
 471         update_channel(&gossip_sync, &secp_ctx, &privkeys[2], UnsignedChannelUpdate {
 472                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 473                 short_channel_id: 7,
 474                 timestamp: 1,
 475                 flags: 0,
 476                 cltv_expiry_delta: (7 << 4) | 1,
 477                 htlc_minimum_msat: 0,
 478                 htlc_maximum_msat: MAX_VALUE_MSAT,
 479                 fee_base_msat: 0,
 480                 fee_proportional_millionths: 1000000,
 481                 excess_data: Vec::new()
 482         });
 483         update_channel(&gossip_sync, &secp_ctx, &privkeys[5], UnsignedChannelUpdate {
 484                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 485                 short_channel_id: 7,
 486                 timestamp: 1,
 487                 flags: 1,
 488                 cltv_expiry_delta: (7 << 4) | 2,
 489                 htlc_minimum_msat: 0,
 490                 htlc_maximum_msat: MAX_VALUE_MSAT,
 491                 fee_base_msat: 0,
 492                 fee_proportional_millionths: 0,
 493                 excess_data: Vec::new()
 494         });
 495
 496         add_or_update_node(&gossip_sync, &secp_ctx, &privkeys[5], NodeFeatures::from_le_bytes(id_to_feature_flags(6)), 0);
 497
 498         (secp_ctx, network_graph, gossip_sync, chain_monitor, logger)
 499 }