_ Git - rust-lightning/blob - lightning/src/ln/msgs.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 //! Wire messages, traits representing wire message handlers, and a few error types live here.
  11 //!
  12 //! For a normal node you probably don't need to use anything here, however, if you wish to split a
  13 //! node into an internet-facing route/message socket handling daemon and a separate daemon (or
  14 //! server entirely) which handles only channel-related messages you may wish to implement
  15 //! [`ChannelMessageHandler`] yourself and use it to re-serialize messages and pass them across
  16 //! daemons/servers.
  17 //!
  18 //! Note that if you go with such an architecture (instead of passing raw socket events to a
  19 //! non-internet-facing system) you trust the frontend internet-facing system to not lie about the
  20 //! source `node_id` of the message, however this does allow you to significantly reduce bandwidth
  21 //! between the systems as routing messages can represent a significant chunk of bandwidth usage
  22 //! (especially for non-channel-publicly-announcing nodes). As an alternate design which avoids
  23 //! this issue, if you have sufficient bidirectional bandwidth between your systems, you may send
  24 //! raw socket events into your non-internet-facing system and then send routing events back to
  25 //! track the network on the less-secure system.
  26
  27 use bitcoin::blockdata::constants::ChainHash;
  28 use bitcoin::secp256k1::PublicKey;
  29 use bitcoin::secp256k1::ecdsa::Signature;
  30 use bitcoin::{secp256k1, Witness};
  31 use bitcoin::blockdata::script::ScriptBuf;
  32 use bitcoin::hash_types::Txid;
  33
  34 use crate::blinded_path::payment::{BlindedPaymentTlvs, ForwardTlvs, ReceiveTlvs};
  35 use crate::ln::{ChannelId, PaymentPreimage, PaymentHash, PaymentSecret};
  36 use crate::ln::features::{ChannelFeatures, ChannelTypeFeatures, InitFeatures, NodeFeatures};
  37 use crate::ln::onion_utils;
  38 use crate::onion_message;
  39 use crate::sign::{NodeSigner, Recipient};
  40
  41 use crate::prelude::*;
  42 #[cfg(feature = "std")]
  43 use core::convert::TryFrom;
  44 use core::fmt;
  45 use core::fmt::Debug;
  46 use core::ops::Deref;
  47 #[cfg(feature = "std")]
  48 use core::str::FromStr;
  49 #[cfg(feature = "std")]
  50 use std::net::SocketAddr;
  51 use core::fmt::Display;
  52 use crate::io::{self, Cursor, Read};
  53 use crate::io_extras::read_to_end;
  54
  55 use crate::events::{EventsProvider, MessageSendEventsProvider};
  56 use crate::util::chacha20poly1305rfc::ChaChaPolyReadAdapter;
  57 use crate::util::logger;
  58 use crate::util::ser::{LengthReadable, LengthReadableArgs, Readable, ReadableArgs, Writeable, Writer, WithoutLength, FixedLengthReader, HighZeroBytesDroppedBigSize, Hostname, TransactionU16LenLimited, BigSize};
  59 use crate::util::base32;
  60
  61 use crate::routing::gossip::{NodeAlias, NodeId};
  62
  63 /// 21 million * 10^8 * 1000
  64 pub(crate) const MAX_VALUE_MSAT: u64 = 21_000_000_0000_0000_000;
  65
  66 #[cfg(taproot)]
  67 /// A partial signature that also contains the Musig2 nonce its signer used
  68 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
  69 pub struct PartialSignatureWithNonce(pub musig2::types::PartialSignature, pub musig2::types::PublicNonce);
  70
  71 /// An error in decoding a message or struct.
  72 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
  73 pub enum DecodeError {
  74         /// A version byte specified something we don't know how to handle.
  75         ///
  76         /// Includes unknown realm byte in an onion hop data packet.
  77         UnknownVersion,
  78         /// Unknown feature mandating we fail to parse message (e.g., TLV with an even, unknown type)
  79         UnknownRequiredFeature,
  80         /// Value was invalid.
  81         ///
  82         /// For example, a byte which was supposed to be a bool was something other than a 0
  83         /// or 1, a public key/private key/signature was invalid, text wasn't UTF-8, TLV was
  84         /// syntactically incorrect, etc.
  85         InvalidValue,
  86         /// The buffer to be read was too short.
  87         ShortRead,
  88         /// A length descriptor in the packet didn't describe the later data correctly.
  89         BadLengthDescriptor,
  90         /// Error from [`std::io`].
  91         Io(io::ErrorKind),
  92         /// The message included zlib-compressed values, which we don't support.
  93         UnsupportedCompression,
  94 }
  95
  96 /// An [`init`] message to be sent to or received from a peer.
  97 ///
  98 /// [`init`]: https://github.com/lightning/bolts/blob/master/01-messaging.md#the-init-message
  99 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 100 pub struct Init {
 101         /// The relevant features which the sender supports.
 102         pub features: InitFeatures,
 103         /// Indicates chains the sender is interested in.
 104         ///
 105         /// If there are no common chains, the connection will be closed.
 106         pub networks: Option<Vec<ChainHash>>,
 107         /// The receipient's network address.
 108         ///
 109         /// This adds the option to report a remote IP address back to a connecting peer using the init
 110         /// message. A node can decide to use that information to discover a potential update to its
 111         /// public IPv4 address (NAT) and use that for a [`NodeAnnouncement`] update message containing
 112         /// the new address.
 113         pub remote_network_address: Option<SocketAddress>,
 114 }
 115
 116 /// An [`error`] message to be sent to or received from a peer.
 117 ///
 118 /// [`error`]: https://github.com/lightning/bolts/blob/master/01-messaging.md#the-error-and-warning-messages
 119 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 120 pub struct ErrorMessage {
 121         /// The channel ID involved in the error.
 122         ///
 123         /// All-0s indicates a general error unrelated to a specific channel, after which all channels
 124         /// with the sending peer should be closed.
 125         pub channel_id: ChannelId,
 126         /// A possibly human-readable error description.
 127         ///
 128         /// The string should be sanitized before it is used (e.g., emitted to logs or printed to
 129         /// `stdout`). Otherwise, a well crafted error message may trigger a security vulnerability in
 130         /// the terminal emulator or the logging subsystem.
 131         pub data: String,
 132 }
 133
 134 /// A [`warning`] message to be sent to or received from a peer.
 135 ///
 136 /// [`warning`]: https://github.com/lightning/bolts/blob/master/01-messaging.md#the-error-and-warning-messages
 137 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 138 pub struct WarningMessage {
 139         /// The channel ID involved in the warning.
 140         ///
 141         /// All-0s indicates a warning unrelated to a specific channel.
 142         pub channel_id: ChannelId,
 143         /// A possibly human-readable warning description.
 144         ///
 145         /// The string should be sanitized before it is used (e.g. emitted to logs or printed to
 146         /// stdout). Otherwise, a well crafted error message may trigger a security vulnerability in
 147         /// the terminal emulator or the logging subsystem.
 148         pub data: String,
 149 }
 150
 151 /// A [`ping`] message to be sent to or received from a peer.
 152 ///
 153 /// [`ping`]: https://github.com/lightning/bolts/blob/master/01-messaging.md#the-ping-and-pong-messages
 154 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 155 pub struct Ping {
 156         /// The desired response length.
 157         pub ponglen: u16,
 158         /// The ping packet size.
 159         ///
 160         /// This field is not sent on the wire. byteslen zeros are sent.
 161         pub byteslen: u16,
 162 }
 163
 164 /// A [`pong`] message to be sent to or received from a peer.
 165 ///
 166 /// [`pong`]: https://github.com/lightning/bolts/blob/master/01-messaging.md#the-ping-and-pong-messages
 167 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 168 pub struct Pong {
 169         /// The pong packet size.
 170         ///
 171         /// This field is not sent on the wire. byteslen zeros are sent.
 172         pub byteslen: u16,
 173 }
 174
 175 /// An [`open_channel`] message to be sent to or received from a peer.
 176 ///
 177 /// Used in V1 channel establishment
 178 ///
 179 /// [`open_channel`]: https://github.com/lightning/bolts/blob/master/02-peer-protocol.md#the-open_channel-message
 180 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 181 pub struct OpenChannel {
 182         /// The genesis hash of the blockchain where the channel is to be opened
 183         pub chain_hash: ChainHash,
 184         /// A temporary channel ID, until the funding outpoint is announced
 185         pub temporary_channel_id: ChannelId,
 186         /// The channel value
 187         pub funding_satoshis: u64,
 188         /// The amount to push to the counterparty as part of the open, in milli-satoshi
 189         pub push_msat: u64,
 190         /// The threshold below which outputs on transactions broadcast by sender will be omitted
 191         pub dust_limit_satoshis: u64,
 192         /// The maximum inbound HTLC value in flight towards sender, in milli-satoshi
 193         pub max_htlc_value_in_flight_msat: u64,
 194         /// The minimum value unencumbered by HTLCs for the counterparty to keep in the channel
 195         pub channel_reserve_satoshis: u64,
 196         /// The minimum HTLC size incoming to sender, in milli-satoshi
 197         pub htlc_minimum_msat: u64,
 198         /// The feerate per 1000-weight of sender generated transactions, until updated by
 199         /// [`UpdateFee`]
 200         pub feerate_per_kw: u32,
 201         /// The number of blocks which the counterparty will have to wait to claim on-chain funds if
 202         /// they broadcast a commitment transaction
 203         pub to_self_delay: u16,
 204         /// The maximum number of inbound HTLCs towards sender
 205         pub max_accepted_htlcs: u16,
 206         /// The sender's key controlling the funding transaction
 207         pub funding_pubkey: PublicKey,
 208         /// Used to derive a revocation key for transactions broadcast by counterparty
 209         pub revocation_basepoint: PublicKey,
 210         /// A payment key to sender for transactions broadcast by counterparty
 211         pub payment_point: PublicKey,
 212         /// Used to derive a payment key to sender for transactions broadcast by sender
 213         pub delayed_payment_basepoint: PublicKey,
 214         /// Used to derive an HTLC payment key to sender
 215         pub htlc_basepoint: PublicKey,
 216         /// The first to-be-broadcast-by-sender transaction's per commitment point
 217         pub first_per_commitment_point: PublicKey,
 218         /// The channel flags to be used
 219         pub channel_flags: u8,
 220         /// A request to pre-set the to-sender output's `scriptPubkey` for when we collaboratively close
 221         pub shutdown_scriptpubkey: Option<ScriptBuf>,
 222         /// The channel type that this channel will represent
 223         ///
 224         /// If this is `None`, we derive the channel type from the intersection of our
 225         /// feature bits with our counterparty's feature bits from the [`Init`] message.
 226         pub channel_type: Option<ChannelTypeFeatures>,
 227 }
 228
 229 /// An open_channel2 message to be sent by or received from the channel initiator.
 230 ///
 231 /// Used in V2 channel establishment
 232 ///
 233 // TODO(dual_funding): Add spec link for `open_channel2`.
 234 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 235 pub struct OpenChannelV2 {
 236         /// The genesis hash of the blockchain where the channel is to be opened
 237         pub chain_hash: ChainHash,
 238         /// A temporary channel ID derived using a zeroed out value for the channel acceptor's revocation basepoint
 239         pub temporary_channel_id: ChannelId,
 240         /// The feerate for the funding transaction set by the channel initiator
 241         pub funding_feerate_sat_per_1000_weight: u32,
 242         /// The feerate for the commitment transaction set by the channel initiator
 243         pub commitment_feerate_sat_per_1000_weight: u32,
 244         /// Part of the channel value contributed by the channel initiator
 245         pub funding_satoshis: u64,
 246         /// The threshold below which outputs on transactions broadcast by the channel initiator will be
 247         /// omitted
 248         pub dust_limit_satoshis: u64,
 249         /// The maximum inbound HTLC value in flight towards channel initiator, in milli-satoshi
 250         pub max_htlc_value_in_flight_msat: u64,
 251         /// The minimum HTLC size incoming to channel initiator, in milli-satoshi
 252         pub htlc_minimum_msat: u64,
 253         /// The number of blocks which the counterparty will have to wait to claim on-chain funds if they
 254         /// broadcast a commitment transaction
 255         pub to_self_delay: u16,
 256         /// The maximum number of inbound HTLCs towards channel initiator
 257         pub max_accepted_htlcs: u16,
 258         /// The locktime for the funding transaction
 259         pub locktime: u32,
 260         /// The channel initiator's key controlling the funding transaction
 261         pub funding_pubkey: PublicKey,
 262         /// Used to derive a revocation key for transactions broadcast by counterparty
 263         pub revocation_basepoint: PublicKey,
 264         /// A payment key to channel initiator for transactions broadcast by counterparty
 265         pub payment_basepoint: PublicKey,
 266         /// Used to derive a payment key to channel initiator for transactions broadcast by channel
 267         /// initiator
 268         pub delayed_payment_basepoint: PublicKey,
 269         /// Used to derive an HTLC payment key to channel initiator
 270         pub htlc_basepoint: PublicKey,
 271         /// The first to-be-broadcast-by-channel-initiator transaction's per commitment point
 272         pub first_per_commitment_point: PublicKey,
 273         /// The second to-be-broadcast-by-channel-initiator transaction's per commitment point
 274         pub second_per_commitment_point: PublicKey,
 275         /// Channel flags
 276         pub channel_flags: u8,
 277         /// Optionally, a request to pre-set the to-channel-initiator output's scriptPubkey for when we
 278         /// collaboratively close
 279         pub shutdown_scriptpubkey: Option<ScriptBuf>,
 280         /// The channel type that this channel will represent. If none is set, we derive the channel
 281         /// type from the intersection of our feature bits with our counterparty's feature bits from
 282         /// the Init message.
 283         pub channel_type: Option<ChannelTypeFeatures>,
 284         /// Optionally, a requirement that only confirmed inputs can be added
 285         pub require_confirmed_inputs: Option<()>,
 286 }
 287
 288 /// An [`accept_channel`] message to be sent to or received from a peer.
 289 ///
 290 /// Used in V1 channel establishment
 291 ///
 292 /// [`accept_channel`]: https://github.com/lightning/bolts/blob/master/02-peer-protocol.md#the-accept_channel-message
 293 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 294 pub struct AcceptChannel {
 295         /// A temporary channel ID, until the funding outpoint is announced
 296         pub temporary_channel_id: ChannelId,
 297         /// The threshold below which outputs on transactions broadcast by sender will be omitted
 298         pub dust_limit_satoshis: u64,
 299         /// The maximum inbound HTLC value in flight towards sender, in milli-satoshi
 300         pub max_htlc_value_in_flight_msat: u64,
 301         /// The minimum value unencumbered by HTLCs for the counterparty to keep in the channel
 302         pub channel_reserve_satoshis: u64,
 303         /// The minimum HTLC size incoming to sender, in milli-satoshi
 304         pub htlc_minimum_msat: u64,
 305         /// Minimum depth of the funding transaction before the channel is considered open
 306         pub minimum_depth: u32,
 307         /// The number of blocks which the counterparty will have to wait to claim on-chain funds if they broadcast a commitment transaction
 308         pub to_self_delay: u16,
 309         /// The maximum number of inbound HTLCs towards sender
 310         pub max_accepted_htlcs: u16,
 311         /// The sender's key controlling the funding transaction
 312         pub funding_pubkey: PublicKey,
 313         /// Used to derive a revocation key for transactions broadcast by counterparty
 314         pub revocation_basepoint: PublicKey,
 315         /// A payment key to sender for transactions broadcast by counterparty
 316         pub payment_point: PublicKey,
 317         /// Used to derive a payment key to sender for transactions broadcast by sender
 318         pub delayed_payment_basepoint: PublicKey,
 319         /// Used to derive an HTLC payment key to sender for transactions broadcast by counterparty
 320         pub htlc_basepoint: PublicKey,
 321         /// The first to-be-broadcast-by-sender transaction's per commitment point
 322         pub first_per_commitment_point: PublicKey,
 323         /// A request to pre-set the to-sender output's scriptPubkey for when we collaboratively close
 324         pub shutdown_scriptpubkey: Option<ScriptBuf>,
 325         /// The channel type that this channel will represent.
 326         ///
 327         /// If this is `None`, we derive the channel type from the intersection of
 328         /// our feature bits with our counterparty's feature bits from the [`Init`] message.
 329         /// This is required to match the equivalent field in [`OpenChannel::channel_type`].
 330         pub channel_type: Option<ChannelTypeFeatures>,
 331         #[cfg(taproot)]
 332         /// Next nonce the channel initiator should use to create a funding output signature against
 333         pub next_local_nonce: Option<musig2::types::PublicNonce>,
 334 }
 335
 336 /// An accept_channel2 message to be sent by or received from the channel accepter.
 337 ///
 338 /// Used in V2 channel establishment
 339 ///
 340 // TODO(dual_funding): Add spec link for `accept_channel2`.
 341 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 342 pub struct AcceptChannelV2 {
 343         /// The same `temporary_channel_id` received from the initiator's `open_channel2` message.
 344         pub temporary_channel_id: ChannelId,
 345         /// Part of the channel value contributed by the channel acceptor
 346         pub funding_satoshis: u64,
 347         /// The threshold below which outputs on transactions broadcast by the channel acceptor will be
 348         /// omitted
 349         pub dust_limit_satoshis: u64,
 350         /// The maximum inbound HTLC value in flight towards channel acceptor, in milli-satoshi
 351         pub max_htlc_value_in_flight_msat: u64,
 352         /// The minimum HTLC size incoming to channel acceptor, in milli-satoshi
 353         pub htlc_minimum_msat: u64,
 354         /// Minimum depth of the funding transaction before the channel is considered open
 355         pub minimum_depth: u32,
 356         /// The number of blocks which the counterparty will have to wait to claim on-chain funds if they
 357         /// broadcast a commitment transaction
 358         pub to_self_delay: u16,
 359         /// The maximum number of inbound HTLCs towards channel acceptor
 360         pub max_accepted_htlcs: u16,
 361         /// The channel acceptor's key controlling the funding transaction
 362         pub funding_pubkey: PublicKey,
 363         /// Used to derive a revocation key for transactions broadcast by counterparty
 364         pub revocation_basepoint: PublicKey,
 365         /// A payment key to channel acceptor for transactions broadcast by counterparty
 366         pub payment_basepoint: PublicKey,
 367         /// Used to derive a payment key to channel acceptor for transactions broadcast by channel
 368         /// acceptor
 369         pub delayed_payment_basepoint: PublicKey,
 370         /// Used to derive an HTLC payment key to channel acceptor for transactions broadcast by counterparty
 371         pub htlc_basepoint: PublicKey,
 372         /// The first to-be-broadcast-by-channel-acceptor transaction's per commitment point
 373         pub first_per_commitment_point: PublicKey,
 374         /// The second to-be-broadcast-by-channel-acceptor transaction's per commitment point
 375         pub second_per_commitment_point: PublicKey,
 376         /// Optionally, a request to pre-set the to-channel-acceptor output's scriptPubkey for when we
 377         /// collaboratively close
 378         pub shutdown_scriptpubkey: Option<ScriptBuf>,
 379         /// The channel type that this channel will represent. If none is set, we derive the channel
 380         /// type from the intersection of our feature bits with our counterparty's feature bits from
 381         /// the Init message.
 382         ///
 383         /// This is required to match the equivalent field in [`OpenChannelV2::channel_type`].
 384         pub channel_type: Option<ChannelTypeFeatures>,
 385         /// Optionally, a requirement that only confirmed inputs can be added
 386         pub require_confirmed_inputs: Option<()>,
 387 }
 388
 389 /// A [`funding_created`] message to be sent to or received from a peer.
 390 ///
 391 /// Used in V1 channel establishment
 392 ///
 393 /// [`funding_created`]: https://github.com/lightning/bolts/blob/master/02-peer-protocol.md#the-funding_created-message
 394 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 395 pub struct FundingCreated {
 396         /// A temporary channel ID, until the funding is established
 397         pub temporary_channel_id: ChannelId,
 398         /// The funding transaction ID
 399         pub funding_txid: Txid,
 400         /// The specific output index funding this channel
 401         pub funding_output_index: u16,
 402         /// The signature of the channel initiator (funder) on the initial commitment transaction
 403         pub signature: Signature,
 404         #[cfg(taproot)]
 405         /// The partial signature of the channel initiator (funder)
 406         pub partial_signature_with_nonce: Option<PartialSignatureWithNonce>,
 407         #[cfg(taproot)]
 408         /// Next nonce the channel acceptor should use to finalize the funding output signature
 409         pub next_local_nonce: Option<musig2::types::PublicNonce>
 410 }
 411
 412 /// A [`funding_signed`] message to be sent to or received from a peer.
 413 ///
 414 /// Used in V1 channel establishment
 415 ///
 416 /// [`funding_signed`]: https://github.com/lightning/bolts/blob/master/02-peer-protocol.md#the-funding_signed-message
 417 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 418 pub struct FundingSigned {
 419         /// The channel ID
 420         pub channel_id: ChannelId,
 421         /// The signature of the channel acceptor (fundee) on the initial commitment transaction
 422         pub signature: Signature,
 423         #[cfg(taproot)]
 424         /// The partial signature of the channel acceptor (fundee)
 425         pub partial_signature_with_nonce: Option<PartialSignatureWithNonce>,
 426 }
 427
 428 /// A [`channel_ready`] message to be sent to or received from a peer.
 429 ///
 430 /// [`channel_ready`]: https://github.com/lightning/bolts/blob/master/02-peer-protocol.md#the-channel_ready-message
 431 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 432 pub struct ChannelReady {
 433         /// The channel ID
 434         pub channel_id: ChannelId,
 435         /// The per-commitment point of the second commitment transaction
 436         pub next_per_commitment_point: PublicKey,
 437         /// If set, provides a `short_channel_id` alias for this channel.
 438         ///
 439         /// The sender will accept payments to be forwarded over this SCID and forward them to this
 440         /// messages' recipient.
 441         pub short_channel_id_alias: Option<u64>,
 442 }
 443
 444 /// An stfu (quiescence) message to be sent by or received from the stfu initiator.
 445 // TODO(splicing): Add spec link for `stfu`; still in draft, using from https://github.com/lightning/bolts/pull/863
 446 #[derive(Clone, Debug, PartialEq, Eq)]
 447 pub struct Stfu {
 448         /// The channel ID where quiescence is intended
 449         pub channel_id: ChannelId,
 450         /// Initiator flag, 1 if initiating, 0 if replying to an stfu.
 451         pub initiator: u8,
 452 }
 453
 454 /// A splice message to be sent by or received from the stfu initiator (splice initiator).
 455 // TODO(splicing): Add spec link for `splice`; still in draft, using from https://github.com/lightning/bolts/pull/863
 456 #[derive(Clone, Debug, PartialEq, Eq)]
 457 pub struct Splice {
 458         /// The channel ID where splicing is intended
 459         pub channel_id: ChannelId,
 460         /// The genesis hash of the blockchain where the channel is intended to be spliced
 461         pub chain_hash: ChainHash,
 462         /// The intended change in channel capacity: the amount to be added (positive value)
 463         /// or removed (negative value) by the sender (splice initiator) by splicing into/from the channel.
 464         pub relative_satoshis: i64,
 465         /// The feerate for the new funding transaction, set by the splice initiator
 466         pub funding_feerate_perkw: u32,
 467         /// The locktime for the new funding transaction
 468         pub locktime: u32,
 469         /// The key of the sender (splice initiator) controlling the new funding transaction
 470         pub funding_pubkey: PublicKey,
 471 }
 472
 473 /// A splice_ack message to be received by or sent to the splice initiator.
 474 ///
 475 // TODO(splicing): Add spec link for `splice_ack`; still in draft, using from https://github.com/lightning/bolts/pull/863
 476 #[derive(Clone, Debug, PartialEq, Eq)]
 477 pub struct SpliceAck {
 478         /// The channel ID where splicing is intended
 479         pub channel_id: ChannelId,
 480         /// The genesis hash of the blockchain where the channel is intended to be spliced
 481         pub chain_hash: ChainHash,
 482         /// The intended change in channel capacity: the amount to be added (positive value)
 483         /// or removed (negative value) by the sender (splice acceptor) by splicing into/from the channel.
 484         pub relative_satoshis: i64,
 485         /// The key of the sender (splice acceptor) controlling the new funding transaction
 486         pub funding_pubkey: PublicKey,
 487 }
 488
 489 /// A splice_locked message to be sent to or received from a peer.
 490 ///
 491 // TODO(splicing): Add spec link for `splice_locked`; still in draft, using from https://github.com/lightning/bolts/pull/863
 492 #[derive(Clone, Debug, PartialEq, Eq)]
 493 pub struct SpliceLocked {
 494         /// The channel ID
 495         pub channel_id: ChannelId,
 496 }
 497
 498 /// A tx_add_input message for adding an input during interactive transaction construction
 499 ///
 500 // TODO(dual_funding): Add spec link for `tx_add_input`.
 501 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 502 pub struct TxAddInput {
 503         /// The channel ID
 504         pub channel_id: ChannelId,
 505         /// A randomly chosen unique identifier for this input, which is even for initiators and odd for
 506         /// non-initiators.
 507         pub serial_id: u64,
 508         /// Serialized transaction that contains the output this input spends to verify that it is non
 509         /// malleable.
 510         pub prevtx: TransactionU16LenLimited,
 511         /// The index of the output being spent
 512         pub prevtx_out: u32,
 513         /// The sequence number of this input
 514         pub sequence: u32,
 515 }
 516
 517 /// A tx_add_output message for adding an output during interactive transaction construction.
 518 ///
 519 // TODO(dual_funding): Add spec link for `tx_add_output`.
 520 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 521 pub struct TxAddOutput {
 522         /// The channel ID
 523         pub channel_id: ChannelId,
 524         /// A randomly chosen unique identifier for this output, which is even for initiators and odd for
 525         /// non-initiators.
 526         pub serial_id: u64,
 527         /// The satoshi value of the output
 528         pub sats: u64,
 529         /// The scriptPubKey for the output
 530         pub script: ScriptBuf,
 531 }
 532
 533 /// A tx_remove_input message for removing an input during interactive transaction construction.
 534 ///
 535 // TODO(dual_funding): Add spec link for `tx_remove_input`.
 536 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 537 pub struct TxRemoveInput {
 538         /// The channel ID
 539         pub channel_id: ChannelId,
 540         /// The serial ID of the input to be removed
 541         pub serial_id: u64,
 542 }
 543
 544 /// A tx_remove_output message for removing an output during interactive transaction construction.
 545 ///
 546 // TODO(dual_funding): Add spec link for `tx_remove_output`.
 547 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 548 pub struct TxRemoveOutput {
 549         /// The channel ID
 550         pub channel_id: ChannelId,
 551         /// The serial ID of the output to be removed
 552         pub serial_id: u64,
 553 }
 554
 555 /// A tx_complete message signalling the conclusion of a peer's transaction contributions during
 556 /// interactive transaction construction.
 557 ///
 558 // TODO(dual_funding): Add spec link for `tx_complete`.
 559 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 560 pub struct TxComplete {
 561         /// The channel ID
 562         pub channel_id: ChannelId,
 563 }
 564
 565 /// A tx_signatures message containing the sender's signatures for a transaction constructed with
 566 /// interactive transaction construction.
 567 ///
 568 // TODO(dual_funding): Add spec link for `tx_signatures`.
 569 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 570 pub struct TxSignatures {
 571         /// The channel ID
 572         pub channel_id: ChannelId,
 573         /// The TXID
 574         pub tx_hash: Txid,
 575         /// The list of witnesses
 576         pub witnesses: Vec<Witness>,
 577 }
 578
 579 /// A tx_init_rbf message which initiates a replacement of the transaction after it's been
 580 /// completed.
 581 ///
 582 // TODO(dual_funding): Add spec link for `tx_init_rbf`.
 583 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 584 pub struct TxInitRbf {
 585         /// The channel ID
 586         pub channel_id: ChannelId,
 587         /// The locktime of the transaction
 588         pub locktime: u32,
 589         /// The feerate of the transaction
 590         pub feerate_sat_per_1000_weight: u32,
 591         /// The number of satoshis the sender will contribute to or, if negative, remove from
 592         /// (e.g. splice-out) the funding output of the transaction
 593         pub funding_output_contribution: Option<i64>,
 594 }
 595
 596 /// A tx_ack_rbf message which acknowledges replacement of the transaction after it's been
 597 /// completed.
 598 ///
 599 // TODO(dual_funding): Add spec link for `tx_ack_rbf`.
 600 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 601 pub struct TxAckRbf {
 602         /// The channel ID
 603         pub channel_id: ChannelId,
 604         /// The number of satoshis the sender will contribute to or, if negative, remove from
 605         /// (e.g. splice-out) the funding output of the transaction
 606         pub funding_output_contribution: Option<i64>,
 607 }
 608
 609 /// A tx_abort message which signals the cancellation of an in-progress transaction negotiation.
 610 ///
 611 // TODO(dual_funding): Add spec link for `tx_abort`.
 612 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 613 pub struct TxAbort {
 614         /// The channel ID
 615         pub channel_id: ChannelId,
 616         /// Message data
 617         pub data: Vec<u8>,
 618 }
 619
 620 /// A [`shutdown`] message to be sent to or received from a peer.
 621 ///
 622 /// [`shutdown`]: https://github.com/lightning/bolts/blob/master/02-peer-protocol.md#closing-initiation-shutdown
 623 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 624 pub struct Shutdown {
 625         /// The channel ID
 626         pub channel_id: ChannelId,
 627         /// The destination of this peer's funds on closing.
 628         ///
 629         /// Must be in one of these forms: P2PKH, P2SH, P2WPKH, P2WSH, P2TR.
 630         pub scriptpubkey: ScriptBuf,
 631 }
 632
 633 /// The minimum and maximum fees which the sender is willing to place on the closing transaction.
 634 ///
 635 /// This is provided in [`ClosingSigned`] by both sides to indicate the fee range they are willing
 636 /// to use.
 637 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 638 pub struct ClosingSignedFeeRange {
 639         /// The minimum absolute fee, in satoshis, which the sender is willing to place on the closing
 640         /// transaction.
 641         pub min_fee_satoshis: u64,
 642         /// The maximum absolute fee, in satoshis, which the sender is willing to place on the closing
 643         /// transaction.
 644         pub max_fee_satoshis: u64,
 645 }
 646
 647 /// A [`closing_signed`] message to be sent to or received from a peer.
 648 ///
 649 /// [`closing_signed`]: https://github.com/lightning/bolts/blob/master/02-peer-protocol.md#closing-negotiation-closing_signed
 650 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 651 pub struct ClosingSigned {
 652         /// The channel ID
 653         pub channel_id: ChannelId,
 654         /// The proposed total fee for the closing transaction
 655         pub fee_satoshis: u64,
 656         /// A signature on the closing transaction
 657         pub signature: Signature,
 658         /// The minimum and maximum fees which the sender is willing to accept, provided only by new
 659         /// nodes.
 660         pub fee_range: Option<ClosingSignedFeeRange>,
 661 }
 662
 663 /// An [`update_add_htlc`] message to be sent to or received from a peer.
 664 ///
 665 /// [`update_add_htlc`]: https://github.com/lightning/bolts/blob/master/02-peer-protocol.md#adding-an-htlc-update_add_htlc
 666 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 667 pub struct UpdateAddHTLC {
 668         /// The channel ID
 669         pub channel_id: ChannelId,
 670         /// The HTLC ID
 671         pub htlc_id: u64,
 672         /// The HTLC value in milli-satoshi
 673         pub amount_msat: u64,
 674         /// The payment hash, the pre-image of which controls HTLC redemption
 675         pub payment_hash: PaymentHash,
 676         /// The expiry height of the HTLC
 677         pub cltv_expiry: u32,
 678         /// The extra fee skimmed by the sender of this message. See
 679         /// [`ChannelConfig::accept_underpaying_htlcs`].
 680         ///
 681         /// [`ChannelConfig::accept_underpaying_htlcs`]: crate::util::config::ChannelConfig::accept_underpaying_htlcs
 682         pub skimmed_fee_msat: Option<u64>,
 683         /// The onion routing packet with encrypted data for the next hop.
 684         pub onion_routing_packet: OnionPacket,
 685         /// Provided if we are relaying or receiving a payment within a blinded path, to decrypt the onion
 686         /// routing packet and the recipient-provided encrypted payload within.
 687         pub blinding_point: Option<PublicKey>,
 688 }
 689
 690  /// An onion message to be sent to or received from a peer.
 691  ///
 692  // TODO: update with link to OM when they are merged into the BOLTs
 693 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 694 pub struct OnionMessage {
 695         /// Used in decrypting the onion packet's payload.
 696         pub blinding_point: PublicKey,
 697         /// The full onion packet including hop data, pubkey, and hmac
 698         pub onion_routing_packet: onion_message::Packet,
 699 }
 700
 701 /// An [`update_fulfill_htlc`] message to be sent to or received from a peer.
 702 ///
 703 /// [`update_fulfill_htlc`]: https://github.com/lightning/bolts/blob/master/02-peer-protocol.md#removing-an-htlc-update_fulfill_htlc-update_fail_htlc-and-update_fail_malformed_htlc
 704 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 705 pub struct UpdateFulfillHTLC {
 706         /// The channel ID
 707         pub channel_id: ChannelId,
 708         /// The HTLC ID
 709         pub htlc_id: u64,
 710         /// The pre-image of the payment hash, allowing HTLC redemption
 711         pub payment_preimage: PaymentPreimage,
 712 }
 713
 714 /// An [`update_fail_htlc`] message to be sent to or received from a peer.
 715 ///
 716 /// [`update_fail_htlc`]: https://github.com/lightning/bolts/blob/master/02-peer-protocol.md#removing-an-htlc-update_fulfill_htlc-update_fail_htlc-and-update_fail_malformed_htlc
 717 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 718 pub struct UpdateFailHTLC {
 719         /// The channel ID
 720         pub channel_id: ChannelId,
 721         /// The HTLC ID
 722         pub htlc_id: u64,
 723         pub(crate) reason: OnionErrorPacket,
 724 }
 725
 726 /// An [`update_fail_malformed_htlc`] message to be sent to or received from a peer.
 727 ///
 728 /// [`update_fail_malformed_htlc`]: https://github.com/lightning/bolts/blob/master/02-peer-protocol.md#removing-an-htlc-update_fulfill_htlc-update_fail_htlc-and-update_fail_malformed_htlc
 729 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 730 pub struct UpdateFailMalformedHTLC {
 731         /// The channel ID
 732         pub channel_id: ChannelId,
 733         /// The HTLC ID
 734         pub htlc_id: u64,
 735         pub(crate) sha256_of_onion: [u8; 32],
 736         /// The failure code
 737         pub failure_code: u16,
 738 }
 739
 740 /// A [`commitment_signed`] message to be sent to or received from a peer.
 741 ///
 742 /// [`commitment_signed`]: https://github.com/lightning/bolts/blob/master/02-peer-protocol.md#committing-updates-so-far-commitment_signed
 743 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 744 pub struct CommitmentSigned {
 745         /// The channel ID
 746         pub channel_id: ChannelId,
 747         /// A signature on the commitment transaction
 748         pub signature: Signature,
 749         /// Signatures on the HTLC transactions
 750         pub htlc_signatures: Vec<Signature>,
 751         #[cfg(taproot)]
 752         /// The partial Taproot signature on the commitment transaction
 753         pub partial_signature_with_nonce: Option<PartialSignatureWithNonce>,
 754 }
 755
 756 /// A [`revoke_and_ack`] message to be sent to or received from a peer.
 757 ///
 758 /// [`revoke_and_ack`]: https://github.com/lightning/bolts/blob/master/02-peer-protocol.md#completing-the-transition-to-the-updated-state-revoke_and_ack
 759 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 760 pub struct RevokeAndACK {
 761         /// The channel ID
 762         pub channel_id: ChannelId,
 763         /// The secret corresponding to the per-commitment point
 764         pub per_commitment_secret: [u8; 32],
 765         /// The next sender-broadcast commitment transaction's per-commitment point
 766         pub next_per_commitment_point: PublicKey,
 767         #[cfg(taproot)]
 768         /// Musig nonce the recipient should use in their next commitment signature message
 769         pub next_local_nonce: Option<musig2::types::PublicNonce>
 770 }
 771
 772 /// An [`update_fee`] message to be sent to or received from a peer
 773 ///
 774 /// [`update_fee`]: https://github.com/lightning/bolts/blob/master/02-peer-protocol.md#updating-fees-update_fee
 775 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 776 pub struct UpdateFee {
 777         /// The channel ID
 778         pub channel_id: ChannelId,
 779         /// Fee rate per 1000-weight of the transaction
 780         pub feerate_per_kw: u32,
 781 }
 782
 783 /// A [`channel_reestablish`] message to be sent to or received from a peer.
 784 ///
 785 /// [`channel_reestablish`]: https://github.com/lightning/bolts/blob/master/02-peer-protocol.md#message-retransmission
 786 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 787 pub struct ChannelReestablish {
 788         /// The channel ID
 789         pub channel_id: ChannelId,
 790         /// The next commitment number for the sender
 791         pub next_local_commitment_number: u64,
 792         /// The next commitment number for the recipient
 793         pub next_remote_commitment_number: u64,
 794         /// Proof that the sender knows the per-commitment secret of a specific commitment transaction
 795         /// belonging to the recipient
 796         pub your_last_per_commitment_secret: [u8; 32],
 797         /// The sender's per-commitment point for their current commitment transaction
 798         pub my_current_per_commitment_point: PublicKey,
 799         /// The next funding transaction ID
 800         pub next_funding_txid: Option<Txid>,
 801 }
 802
 803 /// An [`announcement_signatures`] message to be sent to or received from a peer.
 804 ///
 805 /// [`announcement_signatures`]: https://github.com/lightning/bolts/blob/master/07-routing-gossip.md#the-announcement_signatures-message
 806 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 807 pub struct AnnouncementSignatures {
 808         /// The channel ID
 809         pub channel_id: ChannelId,
 810         /// The short channel ID
 811         pub short_channel_id: u64,
 812         /// A signature by the node key
 813         pub node_signature: Signature,
 814         /// A signature by the funding key
 815         pub bitcoin_signature: Signature,
 816 }
 817
 818 /// An address which can be used to connect to a remote peer.
 819 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 820 pub enum SocketAddress {
 821         /// An IPv4 address and port on which the peer is listening.
 822         TcpIpV4 {
 823                 /// The 4-byte IPv4 address
 824                 addr: [u8; 4],
 825                 /// The port on which the node is listening
 826                 port: u16,
 827         },
 828         /// An IPv6 address and port on which the peer is listening.
 829         TcpIpV6 {
 830                 /// The 16-byte IPv6 address
 831                 addr: [u8; 16],
 832                 /// The port on which the node is listening
 833                 port: u16,
 834         },
 835         /// An old-style Tor onion address/port on which the peer is listening.
 836         ///
 837         /// This field is deprecated and the Tor network generally no longer supports V2 Onion
 838         /// addresses. Thus, the details are not parsed here.
 839         OnionV2([u8; 12]),
 840         /// A new-style Tor onion address/port on which the peer is listening.
 841         ///
 842         /// To create the human-readable "hostname", concatenate the ED25519 pubkey, checksum, and version,
 843         /// wrap as base32 and append ".onion".
 844         OnionV3 {
 845                 /// The ed25519 long-term public key of the peer
 846                 ed25519_pubkey: [u8; 32],
 847                 /// The checksum of the pubkey and version, as included in the onion address
 848                 checksum: u16,
 849                 /// The version byte, as defined by the Tor Onion v3 spec.
 850                 version: u8,
 851                 /// The port on which the node is listening
 852                 port: u16,
 853         },
 854         /// A hostname/port on which the peer is listening.
 855         Hostname {
 856                 /// The hostname on which the node is listening.
 857                 hostname: Hostname,
 858                 /// The port on which the node is listening.
 859                 port: u16,
 860         },
 861 }
 862 impl SocketAddress {
 863         /// Gets the ID of this address type. Addresses in [`NodeAnnouncement`] messages should be sorted
 864         /// by this.
 865         pub(crate) fn get_id(&self) -> u8 {
 866                 match self {
 867                         &SocketAddress::TcpIpV4 {..} => { 1 },
 868                         &SocketAddress::TcpIpV6 {..} => { 2 },
 869                         &SocketAddress::OnionV2(_) => { 3 },
 870                         &SocketAddress::OnionV3 {..} => { 4 },
 871                         &SocketAddress::Hostname {..} => { 5 },
 872                 }
 873         }
 874
 875         /// Strict byte-length of address descriptor, 1-byte type not recorded
 876         fn len(&self) -> u16 {
 877                 match self {
 878                         &SocketAddress::TcpIpV4 { .. } => { 6 },
 879                         &SocketAddress::TcpIpV6 { .. } => { 18 },
 880                         &SocketAddress::OnionV2(_) => { 12 },
 881                         &SocketAddress::OnionV3 { .. } => { 37 },
 882                         // Consists of 1-byte hostname length, hostname bytes, and 2-byte port.
 883                         &SocketAddress::Hostname { ref hostname, .. } => { u16::from(hostname.len()) + 3 },
 884                 }
 885         }
 886
 887         /// The maximum length of any address descriptor, not including the 1-byte type.
 888         /// This maximum length is reached by a hostname address descriptor:
 889         /// a hostname with a maximum length of 255, its 1-byte length and a 2-byte port.
 890         pub(crate) const MAX_LEN: u16 = 258;
 891 }
 892
 893 impl Writeable for SocketAddress {
 894         fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
 895                 match self {
 896                         &SocketAddress::TcpIpV4 { ref addr, ref port } => {
 897                                 1u8.write(writer)?;
 898                                 addr.write(writer)?;
 899                                 port.write(writer)?;
 900                         },
 901                         &SocketAddress::TcpIpV6 { ref addr, ref port } => {
 902                                 2u8.write(writer)?;
 903                                 addr.write(writer)?;
 904                                 port.write(writer)?;
 905                         },
 906                         &SocketAddress::OnionV2(bytes) => {
 907                                 3u8.write(writer)?;
 908                                 bytes.write(writer)?;
 909                         },
 910                         &SocketAddress::OnionV3 { ref ed25519_pubkey, ref checksum, ref version, ref port } => {
 911                                 4u8.write(writer)?;
 912                                 ed25519_pubkey.write(writer)?;
 913                                 checksum.write(writer)?;
 914                                 version.write(writer)?;
 915                                 port.write(writer)?;
 916                         },
 917                         &SocketAddress::Hostname { ref hostname, ref port } => {
 918                                 5u8.write(writer)?;
 919                                 hostname.write(writer)?;
 920                                 port.write(writer)?;
 921                         },
 922                 }
 923                 Ok(())
 924         }
 925 }
 926
 927 impl Readable for Result<SocketAddress, u8> {
 928         fn read<R: Read>(reader: &mut R) -> Result<Result<SocketAddress, u8>, DecodeError> {
 929                 let byte = <u8 as Readable>::read(reader)?;
 930                 match byte {
 931                         1 => {
 932                                 Ok(Ok(SocketAddress::TcpIpV4 {
 933                                         addr: Readable::read(reader)?,
 934                                         port: Readable::read(reader)?,
 935                                 }))
 936                         },
 937                         2 => {
 938                                 Ok(Ok(SocketAddress::TcpIpV6 {
 939                                         addr: Readable::read(reader)?,
 940                                         port: Readable::read(reader)?,
 941                                 }))
 942                         },
 943                         3 => Ok(Ok(SocketAddress::OnionV2(Readable::read(reader)?))),
 944                         4 => {
 945                                 Ok(Ok(SocketAddress::OnionV3 {
 946                                         ed25519_pubkey: Readable::read(reader)?,
 947                                         checksum: Readable::read(reader)?,
 948                                         version: Readable::read(reader)?,
 949                                         port: Readable::read(reader)?,
 950                                 }))
 951                         },
 952                         5 => {
 953                                 Ok(Ok(SocketAddress::Hostname {
 954                                         hostname: Readable::read(reader)?,
 955                                         port: Readable::read(reader)?,
 956                                 }))
 957                         },
 958                         _ => return Ok(Err(byte)),
 959                 }
 960         }
 961 }
 962
 963 impl Readable for SocketAddress {
 964         fn read<R: Read>(reader: &mut R) -> Result<SocketAddress, DecodeError> {
 965                 match Readable::read(reader) {
 966                         Ok(Ok(res)) => Ok(res),
 967                         Ok(Err(_)) => Err(DecodeError::UnknownVersion),
 968                         Err(e) => Err(e),
 969                 }
 970         }
 971 }
 972
 973 /// [`SocketAddress`] error variants
 974 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
 975 pub enum SocketAddressParseError {
 976         /// Socket address (IPv4/IPv6) parsing error
 977         SocketAddrParse,
 978         /// Invalid input format
 979         InvalidInput,
 980         /// Invalid port
 981         InvalidPort,
 982         /// Invalid onion v3 address
 983         InvalidOnionV3,
 984 }
 985
 986 impl fmt::Display for SocketAddressParseError {
 987         fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
 988                 match self {
 989                         SocketAddressParseError::SocketAddrParse => write!(f, "Socket address (IPv4/IPv6) parsing error"),
 990                         SocketAddressParseError::InvalidInput => write!(f, "Invalid input format. \
 991                                 Expected: \"<ipv4>:<port>\", \"[<ipv6>]:<port>\", \"<onion address>.onion:<port>\" or \"<hostname>:<port>\""),
 992                         SocketAddressParseError::InvalidPort => write!(f, "Invalid port"),
 993                         SocketAddressParseError::InvalidOnionV3 => write!(f, "Invalid onion v3 address"),
 994                 }
 995         }
 996 }
 997
 998 #[cfg(feature = "std")]
 999 impl From<std::net::SocketAddrV4> for SocketAddress {
1000                 fn from(addr: std::net::SocketAddrV4) -> Self {
1001                         SocketAddress::TcpIpV4 { addr: addr.ip().octets(), port: addr.port() }
1002                 }
1003 }
1004
1005 #[cfg(feature = "std")]
1006 impl From<std::net::SocketAddrV6> for SocketAddress {
1007                 fn from(addr: std::net::SocketAddrV6) -> Self {
1008                         SocketAddress::TcpIpV6 { addr: addr.ip().octets(), port: addr.port() }
1009                 }
1010 }
1011
1012 #[cfg(feature = "std")]
1013 impl From<std::net::SocketAddr> for SocketAddress {
1014                 fn from(addr: std::net::SocketAddr) -> Self {
1015                         match addr {
1016                                 std::net::SocketAddr::V4(addr) => addr.into(),
1017                                 std::net::SocketAddr::V6(addr) => addr.into(),
1018                         }
1019                 }
1020 }
1021
1022 #[cfg(feature = "std")]
1023 impl std::net::ToSocketAddrs for SocketAddress {
1024         type Iter = std::vec::IntoIter<std::net::SocketAddr>;
1025
1026         fn to_socket_addrs(&self) -> std::io::Result<Self::Iter> {
1027                 match self {
1028                         SocketAddress::TcpIpV4 { addr, port } => {
1029                                 let ip_addr = std::net::Ipv4Addr::from(*addr);
1030                                 let socket_addr = SocketAddr::new(ip_addr.into(), *port);
1031                                 Ok(vec![socket_addr].into_iter())
1032                         }
1033                         SocketAddress::TcpIpV6 { addr, port } => {
1034                                 let ip_addr = std::net::Ipv6Addr::from(*addr);
1035                                 let socket_addr = SocketAddr::new(ip_addr.into(), *port);
1036                                 Ok(vec![socket_addr].into_iter())
1037                         }
1038                         SocketAddress::Hostname { ref hostname, port } => {
1039                                 (hostname.as_str(), *port).to_socket_addrs()
1040                         }
1041                         SocketAddress::OnionV2(..) => {
1042                                 Err(std::io::Error::new(std::io::ErrorKind::Other, "Resolution of OnionV2 \
1043                                 addresses is currently unsupported."))
1044                         }
1045                         SocketAddress::OnionV3 { .. } => {
1046                                 Err(std::io::Error::new(std::io::ErrorKind::Other, "Resolution of OnionV3 \
1047                                 addresses is currently unsupported."))
1048                         }
1049                 }
1050         }
1051 }
1052
1053 /// Parses an OnionV3 host and port into a [`SocketAddress::OnionV3`].
1054 ///
1055 /// The host part must end with ".onion".
1056 pub fn parse_onion_address(host: &str, port: u16) -> Result<SocketAddress, SocketAddressParseError> {
1057         if host.ends_with(".onion") {
1058                 let domain = &host[..host.len() - ".onion".len()];
1059                 if domain.len() != 56 {
1060                         return Err(SocketAddressParseError::InvalidOnionV3);
1061                 }
1062                 let onion =  base32::Alphabet::RFC4648 { padding: false }.decode(&domain).map_err(|_| SocketAddressParseError::InvalidOnionV3)?;
1063                 if onion.len() != 35 {
1064                         return Err(SocketAddressParseError::InvalidOnionV3);
1065                 }
1066                 let version = onion[0];
1067                 let first_checksum_flag = onion[1];
1068                 let second_checksum_flag = onion[2];
1069                 let mut ed25519_pubkey = [0; 32];
1070                 ed25519_pubkey.copy_from_slice(&onion[3..35]);
1071                 let checksum = u16::from_be_bytes([first_checksum_flag, second_checksum_flag]);
1072                 return Ok(SocketAddress::OnionV3 { ed25519_pubkey, checksum, version, port });
1073
1074         } else {
1075                 return Err(SocketAddressParseError::InvalidInput);
1076         }
1077 }
1078
1079 impl Display for SocketAddress {
1080         fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
1081                 match self {
1082                         SocketAddress::TcpIpV4{addr, port} => write!(
1083                                 f, "{}.{}.{}.{}:{}", addr[0], addr[1], addr[2], addr[3], port)?,
1084                         SocketAddress::TcpIpV6{addr, port} => write!(
1085                                 f,
1086                                 "[{:02x}{:02x}:{:02x}{:02x}:{:02x}{:02x}:{:02x}{:02x}:{:02x}{:02x}:{:02x}{:02x}:{:02x}{:02x}:{:02x}{:02x}]:{}",
1087                                 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5], addr[6], addr[7], addr[8], addr[9], addr[10], addr[11], addr[12], addr[13], addr[14], addr[15], port
1088                         )?,
1089                         SocketAddress::OnionV2(bytes) => write!(f, "OnionV2({:?})", bytes)?,
1090                         SocketAddress::OnionV3 {
1091                                 ed25519_pubkey,
1092                                 checksum,
1093                                 version,
1094                                 port,
1095                         } => {
1096                                 let [first_checksum_flag, second_checksum_flag] = checksum.to_be_bytes();
1097                                 let mut addr = vec![*version, first_checksum_flag, second_checksum_flag];
1098                                 addr.extend_from_slice(ed25519_pubkey);
1099                                 let onion = base32::Alphabet::RFC4648 { padding: false }.encode(&addr);
1100                                 write!(f, "{}.onion:{}", onion, port)?
1101                         },
1102                         SocketAddress::Hostname { hostname, port } => write!(f, "{}:{}", hostname, port)?,
1103                 }
1104                 Ok(())
1105         }
1106 }
1107
1108 #[cfg(feature = "std")]
1109 impl FromStr for SocketAddress {
1110         type Err = SocketAddressParseError;
1111
1112         fn from_str(s: &str) -> Result<Self, Self::Err> {
1113                 match std::net::SocketAddr::from_str(s) {
1114                         Ok(addr) => Ok(addr.into()),
1115                         Err(_) => {
1116                                 let trimmed_input = match s.rfind(":") {
1117                                         Some(pos) => pos,
1118                                         None => return Err(SocketAddressParseError::InvalidInput),
1119                                 };
1120                                 let host = &s[..trimmed_input];
1121                                 let port: u16 = s[trimmed_input + 1..].parse().map_err(|_| SocketAddressParseError::InvalidPort)?;
1122                                 if host.ends_with(".onion") {
1123                                         return parse_onion_address(host, port);
1124                                 };
1125                                 if let Ok(hostname) = Hostname::try_from(s[..trimmed_input].to_string()) {
1126                                         return Ok(SocketAddress::Hostname { hostname, port });
1127                                 };
1128                                 return Err(SocketAddressParseError::SocketAddrParse)
1129                         },
1130                 }
1131         }
1132 }
1133
1134 /// Represents the set of gossip messages that require a signature from a node's identity key.
1135 pub enum UnsignedGossipMessage<'a> {
1136         /// An unsigned channel announcement.
1137         ChannelAnnouncement(&'a UnsignedChannelAnnouncement),
1138         /// An unsigned channel update.
1139         ChannelUpdate(&'a UnsignedChannelUpdate),
1140         /// An unsigned node announcement.
1141         NodeAnnouncement(&'a UnsignedNodeAnnouncement)
1142 }
1143
1144 impl<'a> Writeable for UnsignedGossipMessage<'a> {
1145         fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
1146                 match self {
1147                         UnsignedGossipMessage::ChannelAnnouncement(ref msg) => msg.write(writer),
1148                         UnsignedGossipMessage::ChannelUpdate(ref msg) => msg.write(writer),
1149                         UnsignedGossipMessage::NodeAnnouncement(ref msg) => msg.write(writer),
1150                 }
1151         }
1152 }
1153
1154 /// The unsigned part of a [`node_announcement`] message.
1155 ///
1156 /// [`node_announcement`]: https://github.com/lightning/bolts/blob/master/07-routing-gossip.md#the-node_announcement-message
1157 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
1158 pub struct UnsignedNodeAnnouncement {
1159         /// The advertised features
1160         pub features: NodeFeatures,
1161         /// A strictly monotonic announcement counter, with gaps allowed
1162         pub timestamp: u32,
1163         /// The `node_id` this announcement originated from (don't rebroadcast the `node_announcement` back
1164         /// to this node).
1165         pub node_id: NodeId,
1166         /// An RGB color for UI purposes
1167         pub rgb: [u8; 3],
1168         /// An alias, for UI purposes.
1169         ///
1170         /// This should be sanitized before use. There is no guarantee of uniqueness.
1171         pub alias: NodeAlias,
1172         /// List of addresses on which this node is reachable
1173         pub addresses: Vec<SocketAddress>,
1174         pub(crate) excess_address_data: Vec<u8>,
1175         pub(crate) excess_data: Vec<u8>,
1176 }
1177 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
1178 /// A [`node_announcement`] message to be sent to or received from a peer.
1179 ///
1180 /// [`node_announcement`]: https://github.com/lightning/bolts/blob/master/07-routing-gossip.md#the-node_announcement-message
1181 pub struct NodeAnnouncement {
1182         /// The signature by the node key
1183         pub signature: Signature,
1184         /// The actual content of the announcement
1185         pub contents: UnsignedNodeAnnouncement,
1186 }
1187
1188 /// The unsigned part of a [`channel_announcement`] message.
1189 ///
1190 /// [`channel_announcement`]: https://github.com/lightning/bolts/blob/master/07-routing-gossip.md#the-channel_announcement-message
1191 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
1192 pub struct UnsignedChannelAnnouncement {
1193         /// The advertised channel features
1194         pub features: ChannelFeatures,
1195         /// The genesis hash of the blockchain where the channel is to be opened
1196         pub chain_hash: ChainHash,
1197         /// The short channel ID
1198         pub short_channel_id: u64,
1199         /// One of the two `node_id`s which are endpoints of this channel
1200         pub node_id_1: NodeId,
1201         /// The other of the two `node_id`s which are endpoints of this channel
1202         pub node_id_2: NodeId,
1203         /// The funding key for the first node
1204         pub bitcoin_key_1: NodeId,
1205         /// The funding key for the second node
1206         pub bitcoin_key_2: NodeId,
1207         /// Excess data which was signed as a part of the message which we do not (yet) understand how
1208         /// to decode.
1209         ///
1210         /// This is stored to ensure forward-compatibility as new fields are added to the lightning gossip protocol.
1211         pub excess_data: Vec<u8>,
1212 }
1213 /// A [`channel_announcement`] message to be sent to or received from a peer.
1214 ///
1215 /// [`channel_announcement`]: https://github.com/lightning/bolts/blob/master/07-routing-gossip.md#the-channel_announcement-message
1216 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
1217 pub struct ChannelAnnouncement {
1218         /// Authentication of the announcement by the first public node
1219         pub node_signature_1: Signature,
1220         /// Authentication of the announcement by the second public node
1221         pub node_signature_2: Signature,
1222         /// Proof of funding UTXO ownership by the first public node
1223         pub bitcoin_signature_1: Signature,
1224         /// Proof of funding UTXO ownership by the second public node
1225         pub bitcoin_signature_2: Signature,
1226         /// The actual announcement
1227         pub contents: UnsignedChannelAnnouncement,
1228 }
1229
1230 /// The unsigned part of a [`channel_update`] message.
1231 ///
1232 /// [`channel_update`]: https://github.com/lightning/bolts/blob/master/07-routing-gossip.md#the-channel_update-message
1233 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
1234 pub struct UnsignedChannelUpdate {
1235         /// The genesis hash of the blockchain where the channel is to be opened
1236         pub chain_hash: ChainHash,
1237         /// The short channel ID
1238         pub short_channel_id: u64,
1239         /// A strictly monotonic announcement counter, with gaps allowed, specific to this channel
1240         pub timestamp: u32,
1241         /// Channel flags
1242         pub flags: u8,
1243         /// The number of blocks such that if:
1244         /// `incoming_htlc.cltv_expiry < outgoing_htlc.cltv_expiry + cltv_expiry_delta`
1245         /// then we need to fail the HTLC backwards. When forwarding an HTLC, `cltv_expiry_delta` determines
1246         /// the outgoing HTLC's minimum `cltv_expiry` value -- so, if an incoming HTLC comes in with a
1247         /// `cltv_expiry` of 100000, and the node we're forwarding to has a `cltv_expiry_delta` value of 10,
1248         /// then we'll check that the outgoing HTLC's `cltv_expiry` value is at least 100010 before
1249         /// forwarding. Note that the HTLC sender is the one who originally sets this value when
1250         /// constructing the route.
1251         pub cltv_expiry_delta: u16,
1252         /// The minimum HTLC size incoming to sender, in milli-satoshi
1253         pub htlc_minimum_msat: u64,
1254         /// The maximum HTLC value incoming to sender, in milli-satoshi.
1255         ///
1256         /// This used to be optional.
1257         pub htlc_maximum_msat: u64,
1258         /// The base HTLC fee charged by sender, in milli-satoshi
1259         pub fee_base_msat: u32,
1260         /// The amount to fee multiplier, in micro-satoshi
1261         pub fee_proportional_millionths: u32,
1262         /// Excess data which was signed as a part of the message which we do not (yet) understand how
1263         /// to decode.
1264         ///
1265         /// This is stored to ensure forward-compatibility as new fields are added to the lightning gossip protocol.
1266         pub excess_data: Vec<u8>,
1267 }
1268 /// A [`channel_update`] message to be sent to or received from a peer.
1269 ///
1270 /// [`channel_update`]: https://github.com/lightning/bolts/blob/master/07-routing-gossip.md#the-channel_update-message
1271 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
1272 pub struct ChannelUpdate {
1273         /// A signature of the channel update
1274         pub signature: Signature,
1275         /// The actual channel update
1276         pub contents: UnsignedChannelUpdate,
1277 }
1278
1279 /// A [`query_channel_range`] message is used to query a peer for channel
1280 /// UTXOs in a range of blocks. The recipient of a query makes a best
1281 /// effort to reply to the query using one or more [`ReplyChannelRange`]
1282 /// messages.
1283 ///
1284 /// [`query_channel_range`]: https://github.com/lightning/bolts/blob/master/07-routing-gossip.md#the-query_channel_range-and-reply_channel_range-messages
1285 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
1286 pub struct QueryChannelRange {
1287         /// The genesis hash of the blockchain being queried
1288         pub chain_hash: ChainHash,
1289         /// The height of the first block for the channel UTXOs being queried
1290         pub first_blocknum: u32,
1291         /// The number of blocks to include in the query results
1292         pub number_of_blocks: u32,
1293 }
1294
1295 /// A [`reply_channel_range`] message is a reply to a [`QueryChannelRange`]
1296 /// message.
1297 ///
1298 /// Multiple `reply_channel_range` messages can be sent in reply
1299 /// to a single [`QueryChannelRange`] message. The query recipient makes a
1300 /// best effort to respond based on their local network view which may
1301 /// not be a perfect view of the network. The `short_channel_id`s in the
1302 /// reply are encoded. We only support `encoding_type=0` uncompressed
1303 /// serialization and do not support `encoding_type=1` zlib serialization.
1304 ///
1305 /// [`reply_channel_range`]: https://github.com/lightning/bolts/blob/master/07-routing-gossip.md#the-query_channel_range-and-reply_channel_range-messages
1306 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
1307 pub struct ReplyChannelRange {
1308         /// The genesis hash of the blockchain being queried
1309         pub chain_hash: ChainHash,
1310         /// The height of the first block in the range of the reply
1311         pub first_blocknum: u32,
1312         /// The number of blocks included in the range of the reply
1313         pub number_of_blocks: u32,
1314         /// True when this is the final reply for a query
1315         pub sync_complete: bool,
1316         /// The `short_channel_id`s in the channel range
1317         pub short_channel_ids: Vec<u64>,
1318 }
1319
1320 /// A [`query_short_channel_ids`] message is used to query a peer for
1321 /// routing gossip messages related to one or more `short_channel_id`s.
1322 ///
1323 /// The query recipient will reply with the latest, if available,
1324 /// [`ChannelAnnouncement`], [`ChannelUpdate`] and [`NodeAnnouncement`] messages
1325 /// it maintains for the requested `short_channel_id`s followed by a
1326 /// [`ReplyShortChannelIdsEnd`] message. The `short_channel_id`s sent in
1327 /// this query are encoded. We only support `encoding_type=0` uncompressed
1328 /// serialization and do not support `encoding_type=1` zlib serialization.
1329 ///
1330 /// [`query_short_channel_ids`]: https://github.com/lightning/bolts/blob/master/07-routing-gossip.md#the-query_short_channel_idsreply_short_channel_ids_end-messages
1331 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
1332 pub struct QueryShortChannelIds {
1333         /// The genesis hash of the blockchain being queried
1334         pub chain_hash: ChainHash,
1335         /// The short_channel_ids that are being queried
1336         pub short_channel_ids: Vec<u64>,
1337 }
1338
1339 /// A [`reply_short_channel_ids_end`] message is sent as a reply to a
1340 /// message. The query recipient makes a best
1341 /// effort to respond based on their local network view which may not be
1342 /// a perfect view of the network.
1343 ///
1344 /// [`reply_short_channel_ids_end`]: https://github.com/lightning/bolts/blob/master/07-routing-gossip.md#the-query_short_channel_idsreply_short_channel_ids_end-messages
1345 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
1346 pub struct ReplyShortChannelIdsEnd {
1347         /// The genesis hash of the blockchain that was queried
1348         pub chain_hash: ChainHash,
1349         /// Indicates if the query recipient maintains up-to-date channel
1350         /// information for the `chain_hash`
1351         pub full_information: bool,
1352 }
1353
1354 /// A [`gossip_timestamp_filter`] message is used by a node to request
1355 /// gossip relay for messages in the requested time range when the
1356 /// `gossip_queries` feature has been negotiated.
1357 ///
1358 /// [`gossip_timestamp_filter`]: https://github.com/lightning/bolts/blob/master/07-routing-gossip.md#the-gossip_timestamp_filter-message
1359 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
1360 pub struct GossipTimestampFilter {
1361         /// The genesis hash of the blockchain for channel and node information
1362         pub chain_hash: ChainHash,
1363         /// The starting unix timestamp
1364         pub first_timestamp: u32,
1365         /// The range of information in seconds
1366         pub timestamp_range: u32,
1367 }
1368
1369 /// Encoding type for data compression of collections in gossip queries.
1370 ///
1371 /// We do not support `encoding_type=1` zlib serialization [defined in BOLT
1372 /// #7](https://github.com/lightning/bolts/blob/master/07-routing-gossip.md#query-messages).
1373 enum EncodingType {
1374         Uncompressed = 0x00,
1375 }
1376
1377 /// Used to put an error message in a [`LightningError`].
1378 #[derive(Clone, Debug, Hash, PartialEq)]
1379 pub enum ErrorAction {
1380         /// The peer took some action which made us think they were useless. Disconnect them.
1381         DisconnectPeer {
1382                 /// An error message which we should make an effort to send before we disconnect.
1383                 msg: Option<ErrorMessage>
1384         },
1385         /// The peer did something incorrect. Tell them without closing any channels and disconnect them.
1386         DisconnectPeerWithWarning {
1387                 /// A warning message which we should make an effort to send before we disconnect.
1388                 msg: WarningMessage,
1389         },
1390         /// The peer did something harmless that we weren't able to process, just log and ignore
1391         // New code should *not* use this. New code must use IgnoreAndLog, below!
1392         IgnoreError,
1393         /// The peer did something harmless that we weren't able to meaningfully process.
1394         /// If the error is logged, log it at the given level.
1395         IgnoreAndLog(logger::Level),
1396         /// The peer provided us with a gossip message which we'd already seen. In most cases this
1397         /// should be ignored, but it may result in the message being forwarded if it is a duplicate of
1398         /// our own channel announcements.
1399         IgnoreDuplicateGossip,
1400         /// The peer did something incorrect. Tell them.
1401         SendErrorMessage {
1402                 /// The message to send.
1403                 msg: ErrorMessage,
1404         },
1405         /// The peer did something incorrect. Tell them without closing any channels.
1406         SendWarningMessage {
1407                 /// The message to send.
1408                 msg: WarningMessage,
1409                 /// The peer may have done something harmless that we weren't able to meaningfully process,
1410                 /// though we should still tell them about it.
1411                 /// If this event is logged, log it at the given level.
1412                 log_level: logger::Level,
1413         },
1414 }
1415
1416 /// An Err type for failure to process messages.
1417 #[derive(Clone, Debug)]
1418 pub struct LightningError {
1419         /// A human-readable message describing the error
1420         pub err: String,
1421         /// The action which should be taken against the offending peer.
1422         pub action: ErrorAction,
1423 }
1424
1425 /// Struct used to return values from [`RevokeAndACK`] messages, containing a bunch of commitment
1426 /// transaction updates if they were pending.
1427 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
1428 pub struct CommitmentUpdate {
1429         /// `update_add_htlc` messages which should be sent
1430         pub update_add_htlcs: Vec<UpdateAddHTLC>,
1431         /// `update_fulfill_htlc` messages which should be sent
1432         pub update_fulfill_htlcs: Vec<UpdateFulfillHTLC>,
1433         /// `update_fail_htlc` messages which should be sent
1434         pub update_fail_htlcs: Vec<UpdateFailHTLC>,
1435         /// `update_fail_malformed_htlc` messages which should be sent
1436         pub update_fail_malformed_htlcs: Vec<UpdateFailMalformedHTLC>,
1437         /// An `update_fee` message which should be sent
1438         pub update_fee: Option<UpdateFee>,
1439         /// A `commitment_signed` message which should be sent
1440         pub commitment_signed: CommitmentSigned,
1441 }
1442
1443 /// A trait to describe an object which can receive channel messages.
1444 ///
1445 /// Messages MAY be called in parallel when they originate from different `their_node_ids`, however
1446 /// they MUST NOT be called in parallel when the two calls have the same `their_node_id`.
1447 pub trait ChannelMessageHandler : MessageSendEventsProvider {
1448         // Channel init:
1449         /// Handle an incoming `open_channel` message from the given peer.
1450         fn handle_open_channel(&self, their_node_id: &PublicKey, msg: &OpenChannel);
1451         /// Handle an incoming `open_channel2` message from the given peer.
1452         fn handle_open_channel_v2(&self, their_node_id: &PublicKey, msg: &OpenChannelV2);
1453         /// Handle an incoming `accept_channel` message from the given peer.
1454         fn handle_accept_channel(&self, their_node_id: &PublicKey, msg: &AcceptChannel);
1455         /// Handle an incoming `accept_channel2` message from the given peer.
1456         fn handle_accept_channel_v2(&self, their_node_id: &PublicKey, msg: &AcceptChannelV2);
1457         /// Handle an incoming `funding_created` message from the given peer.
1458         fn handle_funding_created(&self, their_node_id: &PublicKey, msg: &FundingCreated);
1459         /// Handle an incoming `funding_signed` message from the given peer.
1460         fn handle_funding_signed(&self, their_node_id: &PublicKey, msg: &FundingSigned);
1461         /// Handle an incoming `channel_ready` message from the given peer.
1462         fn handle_channel_ready(&self, their_node_id: &PublicKey, msg: &ChannelReady);
1463
1464         // Channel close:
1465         /// Handle an incoming `shutdown` message from the given peer.
1466         fn handle_shutdown(&self, their_node_id: &PublicKey, msg: &Shutdown);
1467         /// Handle an incoming `closing_signed` message from the given peer.
1468         fn handle_closing_signed(&self, their_node_id: &PublicKey, msg: &ClosingSigned);
1469
1470         // Quiescence
1471         /// Handle an incoming `stfu` message from the given peer.
1472         fn handle_stfu(&self, their_node_id: &PublicKey, msg: &Stfu);
1473
1474         // Splicing
1475         /// Handle an incoming `splice` message from the given peer.
1476         fn handle_splice(&self, their_node_id: &PublicKey, msg: &Splice);
1477         /// Handle an incoming `splice_ack` message from the given peer.
1478         fn handle_splice_ack(&self, their_node_id: &PublicKey, msg: &SpliceAck);
1479         /// Handle an incoming `splice_locked` message from the given peer.
1480         fn handle_splice_locked(&self, their_node_id: &PublicKey, msg: &SpliceLocked);
1481
1482         // Interactive channel construction
1483         /// Handle an incoming `tx_add_input message` from the given peer.
1484         fn handle_tx_add_input(&self, their_node_id: &PublicKey, msg: &TxAddInput);
1485         /// Handle an incoming `tx_add_output` message from the given peer.
1486         fn handle_tx_add_output(&self, their_node_id: &PublicKey, msg: &TxAddOutput);
1487         /// Handle an incoming `tx_remove_input` message from the given peer.
1488         fn handle_tx_remove_input(&self, their_node_id: &PublicKey, msg: &TxRemoveInput);
1489         /// Handle an incoming `tx_remove_output` message from the given peer.
1490         fn handle_tx_remove_output(&self, their_node_id: &PublicKey, msg: &TxRemoveOutput);
1491         /// Handle an incoming `tx_complete message` from the given peer.
1492         fn handle_tx_complete(&self, their_node_id: &PublicKey, msg: &TxComplete);
1493         /// Handle an incoming `tx_signatures` message from the given peer.
1494         fn handle_tx_signatures(&self, their_node_id: &PublicKey, msg: &TxSignatures);
1495         /// Handle an incoming `tx_init_rbf` message from the given peer.
1496         fn handle_tx_init_rbf(&self, their_node_id: &PublicKey, msg: &TxInitRbf);
1497         /// Handle an incoming `tx_ack_rbf` message from the given peer.
1498         fn handle_tx_ack_rbf(&self, their_node_id: &PublicKey, msg: &TxAckRbf);
1499         /// Handle an incoming `tx_abort message` from the given peer.
1500         fn handle_tx_abort(&self, their_node_id: &PublicKey, msg: &TxAbort);
1501
1502         // HTLC handling:
1503         /// Handle an incoming `update_add_htlc` message from the given peer.
1504         fn handle_update_add_htlc(&self, their_node_id: &PublicKey, msg: &UpdateAddHTLC);
1505         /// Handle an incoming `update_fulfill_htlc` message from the given peer.
1506         fn handle_update_fulfill_htlc(&self, their_node_id: &PublicKey, msg: &UpdateFulfillHTLC);
1507         /// Handle an incoming `update_fail_htlc` message from the given peer.
1508         fn handle_update_fail_htlc(&self, their_node_id: &PublicKey, msg: &UpdateFailHTLC);
1509         /// Handle an incoming `update_fail_malformed_htlc` message from the given peer.
1510         fn handle_update_fail_malformed_htlc(&self, their_node_id: &PublicKey, msg: &UpdateFailMalformedHTLC);
1511         /// Handle an incoming `commitment_signed` message from the given peer.
1512         fn handle_commitment_signed(&self, their_node_id: &PublicKey, msg: &CommitmentSigned);
1513         /// Handle an incoming `revoke_and_ack` message from the given peer.
1514         fn handle_revoke_and_ack(&self, their_node_id: &PublicKey, msg: &RevokeAndACK);
1515
1516         /// Handle an incoming `update_fee` message from the given peer.
1517         fn handle_update_fee(&self, their_node_id: &PublicKey, msg: &UpdateFee);
1518
1519         // Channel-to-announce:
1520         /// Handle an incoming `announcement_signatures` message from the given peer.
1521         fn handle_announcement_signatures(&self, their_node_id: &PublicKey, msg: &AnnouncementSignatures);
1522
1523         // Connection loss/reestablish:
1524         /// Indicates a connection to the peer failed/an existing connection was lost.
1525         fn peer_disconnected(&self, their_node_id: &PublicKey);
1526
1527         /// Handle a peer reconnecting, possibly generating `channel_reestablish` message(s).
1528         ///
1529         /// May return an `Err(())` if the features the peer supports are not sufficient to communicate
1530         /// with us. Implementors should be somewhat conservative about doing so, however, as other
1531         /// message handlers may still wish to communicate with this peer.
1532         fn peer_connected(&self, their_node_id: &PublicKey, msg: &Init, inbound: bool) -> Result<(), ()>;
1533         /// Handle an incoming `channel_reestablish` message from the given peer.
1534         fn handle_channel_reestablish(&self, their_node_id: &PublicKey, msg: &ChannelReestablish);
1535
1536         /// Handle an incoming `channel_update` message from the given peer.
1537         fn handle_channel_update(&self, their_node_id: &PublicKey, msg: &ChannelUpdate);
1538
1539         // Error:
1540         /// Handle an incoming `error` message from the given peer.
1541         fn handle_error(&self, their_node_id: &PublicKey, msg: &ErrorMessage);
1542
1543         // Handler information:
1544         /// Gets the node feature flags which this handler itself supports. All available handlers are
1545         /// queried similarly and their feature flags are OR'd together to form the [`NodeFeatures`]
1546         /// which are broadcasted in our [`NodeAnnouncement`] message.
1547         fn provided_node_features(&self) -> NodeFeatures;
1548
1549         /// Gets the init feature flags which should be sent to the given peer. All available handlers
1550         /// are queried similarly and their feature flags are OR'd together to form the [`InitFeatures`]
1551         /// which are sent in our [`Init`] message.
1552         ///
1553         /// Note that this method is called before [`Self::peer_connected`].
1554         fn provided_init_features(&self, their_node_id: &PublicKey) -> InitFeatures;
1555
1556         /// Gets the chain hashes for this `ChannelMessageHandler` indicating which chains it supports.
1557         ///
1558         /// If it's `None`, then no particular network chain hash compatibility will be enforced when
1559         /// connecting to peers.
1560         fn get_chain_hashes(&self) -> Option<Vec<ChainHash>>;
1561 }
1562
1563 /// A trait to describe an object which can receive routing messages.
1564 ///
1565 /// # Implementor DoS Warnings
1566 ///
1567 /// For messages enabled with the `gossip_queries` feature there are potential DoS vectors when
1568 /// handling inbound queries. Implementors using an on-disk network graph should be aware of
1569 /// repeated disk I/O for queries accessing different parts of the network graph.
1570 pub trait RoutingMessageHandler : MessageSendEventsProvider {
1571         /// Handle an incoming `node_announcement` message, returning `true` if it should be forwarded on,
1572         /// `false` or returning an `Err` otherwise.
1573         fn handle_node_announcement(&self, msg: &NodeAnnouncement) -> Result<bool, LightningError>;
1574         /// Handle a `channel_announcement` message, returning `true` if it should be forwarded on, `false`
1575         /// or returning an `Err` otherwise.
1576         fn handle_channel_announcement(&self, msg: &ChannelAnnouncement) -> Result<bool, LightningError>;
1577         /// Handle an incoming `channel_update` message, returning true if it should be forwarded on,
1578         /// `false` or returning an `Err` otherwise.
1579         fn handle_channel_update(&self, msg: &ChannelUpdate) -> Result<bool, LightningError>;
1580         /// Gets channel announcements and updates required to dump our routing table to a remote node,
1581         /// starting at the `short_channel_id` indicated by `starting_point` and including announcements
1582         /// for a single channel.
1583         fn get_next_channel_announcement(&self, starting_point: u64) -> Option<(ChannelAnnouncement, Option<ChannelUpdate>, Option<ChannelUpdate>)>;
1584         /// Gets a node announcement required to dump our routing table to a remote node, starting at
1585         /// the node *after* the provided pubkey and including up to one announcement immediately
1586         /// higher (as defined by `<PublicKey as Ord>::cmp`) than `starting_point`.
1587         /// If `None` is provided for `starting_point`, we start at the first node.
1588         fn get_next_node_announcement(&self, starting_point: Option<&NodeId>) -> Option<NodeAnnouncement>;
1589         /// Called when a connection is established with a peer. This can be used to
1590         /// perform routing table synchronization using a strategy defined by the
1591         /// implementor.
1592         ///
1593         /// May return an `Err(())` if the features the peer supports are not sufficient to communicate
1594         /// with us. Implementors should be somewhat conservative about doing so, however, as other
1595         /// message handlers may still wish to communicate with this peer.
1596         fn peer_connected(&self, their_node_id: &PublicKey, init: &Init, inbound: bool) -> Result<(), ()>;
1597         /// Handles the reply of a query we initiated to learn about channels
1598         /// for a given range of blocks. We can expect to receive one or more
1599         /// replies to a single query.
1600         fn handle_reply_channel_range(&self, their_node_id: &PublicKey, msg: ReplyChannelRange) -> Result<(), LightningError>;
1601         /// Handles the reply of a query we initiated asking for routing gossip
1602         /// messages for a list of channels. We should receive this message when
1603         /// a node has completed its best effort to send us the pertaining routing
1604         /// gossip messages.
1605         fn handle_reply_short_channel_ids_end(&self, their_node_id: &PublicKey, msg: ReplyShortChannelIdsEnd) -> Result<(), LightningError>;
1606         /// Handles when a peer asks us to send a list of `short_channel_id`s
1607         /// for the requested range of blocks.
1608         fn handle_query_channel_range(&self, their_node_id: &PublicKey, msg: QueryChannelRange) -> Result<(), LightningError>;
1609         /// Handles when a peer asks us to send routing gossip messages for a
1610         /// list of `short_channel_id`s.
1611         fn handle_query_short_channel_ids(&self, their_node_id: &PublicKey, msg: QueryShortChannelIds) -> Result<(), LightningError>;
1612
1613         // Handler queueing status:
1614         /// Indicates that there are a large number of [`ChannelAnnouncement`] (or other) messages
1615         /// pending some async action. While there is no guarantee of the rate of future messages, the
1616         /// caller should seek to reduce the rate of new gossip messages handled, especially
1617         /// [`ChannelAnnouncement`]s.
1618         fn processing_queue_high(&self) -> bool;
1619
1620         // Handler information:
1621         /// Gets the node feature flags which this handler itself supports. All available handlers are
1622         /// queried similarly and their feature flags are OR'd together to form the [`NodeFeatures`]
1623         /// which are broadcasted in our [`NodeAnnouncement`] message.
1624         fn provided_node_features(&self) -> NodeFeatures;
1625         /// Gets the init feature flags which should be sent to the given peer. All available handlers
1626         /// are queried similarly and their feature flags are OR'd together to form the [`InitFeatures`]
1627         /// which are sent in our [`Init`] message.
1628         ///
1629         /// Note that this method is called before [`Self::peer_connected`].
1630         fn provided_init_features(&self, their_node_id: &PublicKey) -> InitFeatures;
1631 }
1632
1633 /// A handler for received [`OnionMessage`]s and for providing generated ones to send.
1634 pub trait OnionMessageHandler: EventsProvider {
1635         /// Handle an incoming `onion_message` message from the given peer.
1636         fn handle_onion_message(&self, peer_node_id: &PublicKey, msg: &OnionMessage);
1637
1638         /// Returns the next pending onion message for the peer with the given node id.
1639         fn next_onion_message_for_peer(&self, peer_node_id: PublicKey) -> Option<OnionMessage>;
1640
1641         /// Called when a connection is established with a peer. Can be used to track which peers
1642         /// advertise onion message support and are online.
1643         ///
1644         /// May return an `Err(())` if the features the peer supports are not sufficient to communicate
1645         /// with us. Implementors should be somewhat conservative about doing so, however, as other
1646         /// message handlers may still wish to communicate with this peer.
1647         fn peer_connected(&self, their_node_id: &PublicKey, init: &Init, inbound: bool) -> Result<(), ()>;
1648
1649         /// Indicates a connection to the peer failed/an existing connection was lost. Allows handlers to
1650         /// drop and refuse to forward onion messages to this peer.
1651         fn peer_disconnected(&self, their_node_id: &PublicKey);
1652
1653         /// Performs actions that should happen roughly every ten seconds after startup. Allows handlers
1654         /// to drop any buffered onion messages intended for prospective peers.
1655         fn timer_tick_occurred(&self);
1656
1657         // Handler information:
1658         /// Gets the node feature flags which this handler itself supports. All available handlers are
1659         /// queried similarly and their feature flags are OR'd together to form the [`NodeFeatures`]
1660         /// which are broadcasted in our [`NodeAnnouncement`] message.
1661         fn provided_node_features(&self) -> NodeFeatures;
1662
1663         /// Gets the init feature flags which should be sent to the given peer. All available handlers
1664         /// are queried similarly and their feature flags are OR'd together to form the [`InitFeatures`]
1665         /// which are sent in our [`Init`] message.
1666         ///
1667         /// Note that this method is called before [`Self::peer_connected`].
1668         fn provided_init_features(&self, their_node_id: &PublicKey) -> InitFeatures;
1669 }
1670
1671 mod fuzzy_internal_msgs {
1672         use bitcoin::secp256k1::PublicKey;
1673         use crate::blinded_path::payment::{PaymentConstraints, PaymentRelay};
1674         use crate::prelude::*;
1675         use crate::ln::{PaymentPreimage, PaymentSecret};
1676         use crate::ln::features::BlindedHopFeatures;
1677
1678         // These types aren't intended to be pub, but are exposed for direct fuzzing (as we deserialize
1679         // them from untrusted input):
1680         #[derive(Clone)]
1681         pub struct FinalOnionHopData {
1682                 pub payment_secret: PaymentSecret,
1683                 /// The total value, in msat, of the payment as received by the ultimate recipient.
1684                 /// Message serialization may panic if this value is more than 21 million Bitcoin.
1685                 pub total_msat: u64,
1686         }
1687
1688         pub enum InboundOnionPayload {
1689                 Forward {
1690                         short_channel_id: u64,
1691                         /// The value, in msat, of the payment after this hop's fee is deducted.
1692                         amt_to_forward: u64,
1693                         outgoing_cltv_value: u32,
1694                 },
1695                 Receive {
1696                         payment_data: Option<FinalOnionHopData>,
1697                         payment_metadata: Option<Vec<u8>>,
1698                         keysend_preimage: Option<PaymentPreimage>,
1699                         custom_tlvs: Vec<(u64, Vec<u8>)>,
1700                         amt_msat: u64,
1701                         outgoing_cltv_value: u32,
1702                 },
1703                 BlindedForward {
1704                         short_channel_id: u64,
1705                         payment_relay: PaymentRelay,
1706                         payment_constraints: PaymentConstraints,
1707                         features: BlindedHopFeatures,
1708                         intro_node_blinding_point: PublicKey,
1709                 },
1710                 BlindedReceive {
1711                         amt_msat: u64,
1712                         total_msat: u64,
1713                         outgoing_cltv_value: u32,
1714                         payment_secret: PaymentSecret,
1715                         payment_constraints: PaymentConstraints,
1716                         intro_node_blinding_point: PublicKey,
1717                 }
1718         }
1719
1720         pub(crate) enum OutboundOnionPayload {
1721                 Forward {
1722                         short_channel_id: u64,
1723                         /// The value, in msat, of the payment after this hop's fee is deducted.
1724                         amt_to_forward: u64,
1725                         outgoing_cltv_value: u32,
1726                 },
1727                 Receive {
1728                         payment_data: Option<FinalOnionHopData>,
1729                         payment_metadata: Option<Vec<u8>>,
1730                         keysend_preimage: Option<PaymentPreimage>,
1731                         custom_tlvs: Vec<(u64, Vec<u8>)>,
1732                         amt_msat: u64,
1733                         outgoing_cltv_value: u32,
1734                 },
1735                 BlindedForward {
1736                         encrypted_tlvs: Vec<u8>,
1737                         intro_node_blinding_point: Option<PublicKey>,
1738                 },
1739                 BlindedReceive {
1740                         amt_msat: u64,
1741                         total_msat: u64,
1742                         outgoing_cltv_value: u32,
1743                         encrypted_tlvs: Vec<u8>,
1744                         intro_node_blinding_point: Option<PublicKey>, // Set if the introduction node of the blinded path is the final node
1745                 }
1746         }
1747
1748         pub struct DecodedOnionErrorPacket {
1749                 pub(crate) hmac: [u8; 32],
1750                 pub(crate) failuremsg: Vec<u8>,
1751                 pub(crate) pad: Vec<u8>,
1752         }
1753 }
1754 #[cfg(fuzzing)]
1755 pub use self::fuzzy_internal_msgs::*;
1756 #[cfg(not(fuzzing))]
1757 pub(crate) use self::fuzzy_internal_msgs::*;
1758
1759 /// BOLT 4 onion packet including hop data for the next peer.
1760 #[derive(Clone, Hash, PartialEq, Eq)]
1761 pub struct OnionPacket {
1762         /// BOLT 4 version number.
1763         pub version: u8,
1764         /// In order to ensure we always return an error on onion decode in compliance with [BOLT
1765         /// #4](https://github.com/lightning/bolts/blob/master/04-onion-routing.md), we have to
1766         /// deserialize `OnionPacket`s contained in [`UpdateAddHTLC`] messages even if the ephemeral
1767         /// public key (here) is bogus, so we hold a [`Result`] instead of a [`PublicKey`] as we'd
1768         /// like.
1769         pub public_key: Result<PublicKey, secp256k1::Error>,
1770         /// 1300 bytes encrypted payload for the next hop.
1771         pub hop_data: [u8; 20*65],
1772         /// HMAC to verify the integrity of hop_data.
1773         pub hmac: [u8; 32],
1774 }
1775
1776 impl onion_utils::Packet for OnionPacket {
1777         type Data = onion_utils::FixedSizeOnionPacket;
1778         fn new(pubkey: PublicKey, hop_data: onion_utils::FixedSizeOnionPacket, hmac: [u8; 32]) -> Self {
1779                 Self {
1780                         version: 0,
1781                         public_key: Ok(pubkey),
1782                         hop_data: hop_data.0,
1783                         hmac,
1784                 }
1785         }
1786 }
1787
1788 impl fmt::Debug for OnionPacket {
1789         fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
1790                 f.write_fmt(format_args!("OnionPacket version {} with hmac {:?}", self.version, &self.hmac[..]))
1791         }
1792 }
1793
1794 #[derive(Clone, Debug, Hash, PartialEq, Eq)]
1795 pub(crate) struct OnionErrorPacket {
1796         // This really should be a constant size slice, but the spec lets these things be up to 128KB?
1797         // (TODO) We limit it in decode to much lower...
1798         pub(crate) data: Vec<u8>,
1799 }
1800
1801 impl fmt::Display for DecodeError {
1802         fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
1803                 match *self {
1804                         DecodeError::UnknownVersion => f.write_str("Unknown realm byte in Onion packet"),
1805                         DecodeError::UnknownRequiredFeature => f.write_str("Unknown required feature preventing decode"),
1806                         DecodeError::InvalidValue => f.write_str("Nonsense bytes didn't map to the type they were interpreted as"),
1807                         DecodeError::ShortRead => f.write_str("Packet extended beyond the provided bytes"),
1808                         DecodeError::BadLengthDescriptor => f.write_str("A length descriptor in the packet didn't describe the later data correctly"),
1809                         DecodeError::Io(ref e) => fmt::Debug::fmt(e, f),
1810                         DecodeError::UnsupportedCompression => f.write_str("We don't support receiving messages with zlib-compressed fields"),
1811                 }
1812         }
1813 }
1814
1815 impl From<io::Error> for DecodeError {
1816         fn from(e: io::Error) -> Self {
1817                 if e.kind() == io::ErrorKind::UnexpectedEof {
1818                         DecodeError::ShortRead
1819                 } else {
1820                         DecodeError::Io(e.kind())
1821                 }
1822         }
1823 }
1824
1825 #[cfg(not(taproot))]
1826 impl_writeable_msg!(AcceptChannel, {
1827         temporary_channel_id,
1828         dust_limit_satoshis,
1829         max_htlc_value_in_flight_msat,
1830         channel_reserve_satoshis,
1831         htlc_minimum_msat,
1832         minimum_depth,
1833         to_self_delay,
1834         max_accepted_htlcs,
1835         funding_pubkey,
1836         revocation_basepoint,
1837         payment_point,
1838         delayed_payment_basepoint,
1839         htlc_basepoint,
1840         first_per_commitment_point,
1841 }, {
1842         (0, shutdown_scriptpubkey, (option, encoding: (ScriptBuf, WithoutLength))), // Don't encode length twice.
1843         (1, channel_type, option),
1844 });
1845
1846 #[cfg(taproot)]
1847 impl_writeable_msg!(AcceptChannel, {
1848         temporary_channel_id,
1849         dust_limit_satoshis,
1850         max_htlc_value_in_flight_msat,
1851         channel_reserve_satoshis,
1852         htlc_minimum_msat,
1853         minimum_depth,
1854         to_self_delay,
1855         max_accepted_htlcs,
1856         funding_pubkey,
1857         revocation_basepoint,
1858         payment_point,
1859         delayed_payment_basepoint,
1860         htlc_basepoint,
1861         first_per_commitment_point,
1862 }, {
1863         (0, shutdown_scriptpubkey, (option, encoding: (ScriptBuf, WithoutLength))), // Don't encode length twice.
1864         (1, channel_type, option),
1865         (4, next_local_nonce, option),
1866 });
1867
1868 impl_writeable_msg!(AcceptChannelV2, {
1869         temporary_channel_id,
1870         funding_satoshis,
1871         dust_limit_satoshis,
1872         max_htlc_value_in_flight_msat,
1873         htlc_minimum_msat,
1874         minimum_depth,
1875         to_self_delay,
1876         max_accepted_htlcs,
1877         funding_pubkey,
1878         revocation_basepoint,
1879         payment_basepoint,
1880         delayed_payment_basepoint,
1881         htlc_basepoint,
1882         first_per_commitment_point,
1883         second_per_commitment_point,
1884 }, {
1885         (0, shutdown_scriptpubkey, option),
1886         (1, channel_type, option),
1887         (2, require_confirmed_inputs, option),
1888 });
1889
1890 impl_writeable_msg!(Stfu, {
1891         channel_id,
1892         initiator,
1893 }, {});
1894
1895 impl_writeable_msg!(Splice, {
1896         channel_id,
1897         chain_hash,
1898         relative_satoshis,
1899         funding_feerate_perkw,
1900         locktime,
1901         funding_pubkey,
1902 }, {});
1903
1904 impl_writeable_msg!(SpliceAck, {
1905         channel_id,
1906         chain_hash,
1907         relative_satoshis,
1908         funding_pubkey,
1909 }, {});
1910
1911 impl_writeable_msg!(SpliceLocked, {
1912         channel_id,
1913 }, {});
1914
1915 impl_writeable_msg!(TxAddInput, {
1916         channel_id,
1917         serial_id,
1918         prevtx,
1919         prevtx_out,
1920         sequence,
1921 }, {});
1922
1923 impl_writeable_msg!(TxAddOutput, {
1924         channel_id,
1925         serial_id,
1926         sats,
1927         script,
1928 }, {});
1929
1930 impl_writeable_msg!(TxRemoveInput, {
1931         channel_id,
1932         serial_id,
1933 }, {});
1934
1935 impl_writeable_msg!(TxRemoveOutput, {
1936         channel_id,
1937         serial_id,
1938 }, {});
1939
1940 impl_writeable_msg!(TxComplete, {
1941         channel_id,
1942 }, {});
1943
1944 impl_writeable_msg!(TxSignatures, {
1945         channel_id,
1946         tx_hash,
1947         witnesses,
1948 }, {});
1949
1950 impl_writeable_msg!(TxInitRbf, {
1951         channel_id,
1952         locktime,
1953         feerate_sat_per_1000_weight,
1954 }, {
1955         (0, funding_output_contribution, option),
1956 });
1957
1958 impl_writeable_msg!(TxAckRbf, {
1959         channel_id,
1960 }, {
1961         (0, funding_output_contribution, option),
1962 });
1963
1964 impl_writeable_msg!(TxAbort, {
1965         channel_id,
1966         data,
1967 }, {});
1968
1969 impl_writeable_msg!(AnnouncementSignatures, {
1970         channel_id,
1971         short_channel_id,
1972         node_signature,
1973         bitcoin_signature
1974 }, {});
1975
1976 impl_writeable_msg!(ChannelReestablish, {
1977         channel_id,
1978         next_local_commitment_number,
1979         next_remote_commitment_number,
1980         your_last_per_commitment_secret,
1981         my_current_per_commitment_point,
1982 }, {
1983         (0, next_funding_txid, option),
1984 });
1985
1986 impl_writeable_msg!(ClosingSigned,
1987         { channel_id, fee_satoshis, signature },
1988         { (1, fee_range, option) }
1989 );
1990
1991 impl_writeable!(ClosingSignedFeeRange, {
1992         min_fee_satoshis,
1993         max_fee_satoshis
1994 });
1995
1996 #[cfg(not(taproot))]
1997 impl_writeable_msg!(CommitmentSigned, {
1998         channel_id,
1999         signature,
2000         htlc_signatures
2001 }, {});
2002
2003 #[cfg(taproot)]
2004 impl_writeable_msg!(CommitmentSigned, {
2005         channel_id,
2006         signature,
2007         htlc_signatures
2008 }, {
2009         (2, partial_signature_with_nonce, option)
2010 });
2011
2012 impl_writeable!(DecodedOnionErrorPacket, {
2013         hmac,
2014         failuremsg,
2015         pad
2016 });
2017
2018 #[cfg(not(taproot))]
2019 impl_writeable_msg!(FundingCreated, {
2020         temporary_channel_id,
2021         funding_txid,
2022         funding_output_index,
2023         signature
2024 }, {});
2025 #[cfg(taproot)]
2026 impl_writeable_msg!(FundingCreated, {
2027         temporary_channel_id,
2028         funding_txid,
2029         funding_output_index,
2030         signature
2031 }, {
2032         (2, partial_signature_with_nonce, option),
2033         (4, next_local_nonce, option)
2034 });
2035
2036 #[cfg(not(taproot))]
2037 impl_writeable_msg!(FundingSigned, {
2038         channel_id,
2039         signature
2040 }, {});
2041
2042 #[cfg(taproot)]
2043 impl_writeable_msg!(FundingSigned, {
2044         channel_id,
2045         signature
2046 }, {
2047         (2, partial_signature_with_nonce, option)
2048 });
2049
2050 impl_writeable_msg!(ChannelReady, {
2051         channel_id,
2052         next_per_commitment_point,
2053 }, {
2054         (1, short_channel_id_alias, option),
2055 });
2056
2057 impl Writeable for Init {
2058         fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
2059                 // global_features gets the bottom 13 bits of our features, and local_features gets all of
2060                 // our relevant feature bits. This keeps us compatible with old nodes.
2061                 self.features.write_up_to_13(w)?;
2062                 self.features.write(w)?;
2063                 encode_tlv_stream!(w, {
2064                         (1, self.networks.as_ref().map(|n| WithoutLength(n)), option),
2065                         (3, self.remote_network_address, option),
2066                 });
2067                 Ok(())
2068         }
2069 }
2070
2071 impl Readable for Init {
2072         fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
2073                 let global_features: InitFeatures = Readable::read(r)?;
2074                 let features: InitFeatures = Readable::read(r)?;
2075                 let mut remote_network_address: Option<SocketAddress> = None;
2076                 let mut networks: Option<WithoutLength<Vec<ChainHash>>> = None;
2077                 decode_tlv_stream!(r, {
2078                         (1, networks, option),
2079                         (3, remote_network_address, option)
2080                 });
2081                 Ok(Init {
2082                         features: features | global_features,
2083                         networks: networks.map(|n| n.0),
2084                         remote_network_address,
2085                 })
2086         }
2087 }
2088
2089 impl_writeable_msg!(OpenChannel, {
2090         chain_hash,
2091         temporary_channel_id,
2092         funding_satoshis,
2093         push_msat,
2094         dust_limit_satoshis,
2095         max_htlc_value_in_flight_msat,
2096         channel_reserve_satoshis,
2097         htlc_minimum_msat,
2098         feerate_per_kw,
2099         to_self_delay,
2100         max_accepted_htlcs,
2101         funding_pubkey,
2102         revocation_basepoint,
2103         payment_point,
2104         delayed_payment_basepoint,
2105         htlc_basepoint,
2106         first_per_commitment_point,
2107         channel_flags,
2108 }, {
2109         (0, shutdown_scriptpubkey, (option, encoding: (ScriptBuf, WithoutLength))), // Don't encode length twice.
2110         (1, channel_type, option),
2111 });
2112
2113 impl_writeable_msg!(OpenChannelV2, {
2114         chain_hash,
2115         temporary_channel_id,
2116         funding_feerate_sat_per_1000_weight,
2117         commitment_feerate_sat_per_1000_weight,
2118         funding_satoshis,
2119         dust_limit_satoshis,
2120         max_htlc_value_in_flight_msat,
2121         htlc_minimum_msat,
2122         to_self_delay,
2123         max_accepted_htlcs,
2124         locktime,
2125         funding_pubkey,
2126         revocation_basepoint,
2127         payment_basepoint,
2128         delayed_payment_basepoint,
2129         htlc_basepoint,
2130         first_per_commitment_point,
2131         second_per_commitment_point,
2132         channel_flags,
2133 }, {
2134         (0, shutdown_scriptpubkey, option),
2135         (1, channel_type, option),
2136         (2, require_confirmed_inputs, option),
2137 });
2138
2139 #[cfg(not(taproot))]
2140 impl_writeable_msg!(RevokeAndACK, {
2141         channel_id,
2142         per_commitment_secret,
2143         next_per_commitment_point
2144 }, {});
2145
2146 #[cfg(taproot)]
2147 impl_writeable_msg!(RevokeAndACK, {
2148         channel_id,
2149         per_commitment_secret,
2150         next_per_commitment_point
2151 }, {
2152         (4, next_local_nonce, option)
2153 });
2154
2155 impl_writeable_msg!(Shutdown, {
2156         channel_id,
2157         scriptpubkey
2158 }, {});
2159
2160 impl_writeable_msg!(UpdateFailHTLC, {
2161         channel_id,
2162         htlc_id,
2163         reason
2164 }, {});
2165
2166 impl_writeable_msg!(UpdateFailMalformedHTLC, {
2167         channel_id,
2168         htlc_id,
2169         sha256_of_onion,
2170         failure_code
2171 }, {});
2172
2173 impl_writeable_msg!(UpdateFee, {
2174         channel_id,
2175         feerate_per_kw
2176 }, {});
2177
2178 impl_writeable_msg!(UpdateFulfillHTLC, {
2179         channel_id,
2180         htlc_id,
2181         payment_preimage
2182 }, {});
2183
2184 // Note that this is written as a part of ChannelManager objects, and thus cannot change its
2185 // serialization format in a way which assumes we know the total serialized length/message end
2186 // position.
2187 impl_writeable!(OnionErrorPacket, {
2188         data
2189 });
2190
2191 // Note that this is written as a part of ChannelManager objects, and thus cannot change its
2192 // serialization format in a way which assumes we know the total serialized length/message end
2193 // position.
2194 impl Writeable for OnionPacket {
2195         fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
2196                 self.version.write(w)?;
2197                 match self.public_key {
2198                         Ok(pubkey) => pubkey.write(w)?,
2199                         Err(_) => [0u8;33].write(w)?,
2200                 }
2201                 w.write_all(&self.hop_data)?;
2202                 self.hmac.write(w)?;
2203                 Ok(())
2204         }
2205 }
2206
2207 impl Readable for OnionPacket {
2208         fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
2209                 Ok(OnionPacket {
2210                         version: Readable::read(r)?,
2211                         public_key: {
2212                                 let mut buf = [0u8;33];
2213                                 r.read_exact(&mut buf)?;
2214                                 PublicKey::from_slice(&buf)
2215                         },
2216                         hop_data: Readable::read(r)?,
2217                         hmac: Readable::read(r)?,
2218                 })
2219         }
2220 }
2221
2222 impl_writeable_msg!(UpdateAddHTLC, {
2223         channel_id,
2224         htlc_id,
2225         amount_msat,
2226         payment_hash,
2227         cltv_expiry,
2228         onion_routing_packet,
2229 }, {
2230         (0, blinding_point, option),
2231         (65537, skimmed_fee_msat, option)
2232 });
2233
2234 impl Readable for OnionMessage {
2235         fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
2236                 let blinding_point: PublicKey = Readable::read(r)?;
2237                 let len: u16 = Readable::read(r)?;
2238                 let mut packet_reader = FixedLengthReader::new(r, len as u64);
2239                 let onion_routing_packet: onion_message::Packet = <onion_message::Packet as LengthReadable>::read(&mut packet_reader)?;
2240                 Ok(Self {
2241                         blinding_point,
2242                         onion_routing_packet,
2243                 })
2244         }
2245 }
2246
2247 impl Writeable for OnionMessage {
2248         fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
2249                 self.blinding_point.write(w)?;
2250                 let onion_packet_len = self.onion_routing_packet.serialized_length();
2251                 (onion_packet_len as u16).write(w)?;
2252                 self.onion_routing_packet.write(w)?;
2253                 Ok(())
2254         }
2255 }
2256
2257 impl Writeable for FinalOnionHopData {
2258         fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
2259                 self.payment_secret.0.write(w)?;
2260                 HighZeroBytesDroppedBigSize(self.total_msat).write(w)
2261         }
2262 }
2263
2264 impl Readable for FinalOnionHopData {
2265         fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
2266                 let secret: [u8; 32] = Readable::read(r)?;
2267                 let amt: HighZeroBytesDroppedBigSize<u64> = Readable::read(r)?;
2268                 Ok(Self { payment_secret: PaymentSecret(secret), total_msat: amt.0 })
2269         }
2270 }
2271
2272 impl Writeable for OutboundOnionPayload {
2273         fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
2274                 match self {
2275                         Self::Forward { short_channel_id, amt_to_forward, outgoing_cltv_value } => {
2276                                 _encode_varint_length_prefixed_tlv!(w, {
2277                                         (2, HighZeroBytesDroppedBigSize(*amt_to_forward), required),
2278                                         (4, HighZeroBytesDroppedBigSize(*outgoing_cltv_value), required),
2279                                         (6, short_channel_id, required)
2280                                 });
2281                         },
2282                         Self::Receive {
2283                                 ref payment_data, ref payment_metadata, ref keysend_preimage, amt_msat,
2284                                 outgoing_cltv_value, ref custom_tlvs,
2285                         } => {
2286                                 // We need to update [`ln::outbound_payment::RecipientOnionFields::with_custom_tlvs`]
2287                                 // to reject any reserved types in the experimental range if new ones are ever
2288                                 // standardized.
2289                                 let keysend_tlv = keysend_preimage.map(|preimage| (5482373484, preimage.encode()));
2290                                 let mut custom_tlvs: Vec<&(u64, Vec<u8>)> = custom_tlvs.iter().chain(keysend_tlv.iter()).collect();
2291                                 custom_tlvs.sort_unstable_by_key(|(typ, _)| *typ);
2292                                 _encode_varint_length_prefixed_tlv!(w, {
2293                                         (2, HighZeroBytesDroppedBigSize(*amt_msat), required),
2294                                         (4, HighZeroBytesDroppedBigSize(*outgoing_cltv_value), required),
2295                                         (8, payment_data, option),
2296                                         (16, payment_metadata.as_ref().map(|m| WithoutLength(m)), option)
2297                                 }, custom_tlvs.iter());
2298                         },
2299                         Self::BlindedForward { encrypted_tlvs, intro_node_blinding_point } => {
2300                                 _encode_varint_length_prefixed_tlv!(w, {
2301                                         (10, *encrypted_tlvs, required_vec),
2302                                         (12, intro_node_blinding_point, option)
2303                                 });
2304                         },
2305                         Self::BlindedReceive {
2306                                 amt_msat, total_msat, outgoing_cltv_value, encrypted_tlvs,
2307                                 intro_node_blinding_point,
2308                         } => {
2309                                 _encode_varint_length_prefixed_tlv!(w, {
2310                                         (2, HighZeroBytesDroppedBigSize(*amt_msat), required),
2311                                         (4, HighZeroBytesDroppedBigSize(*outgoing_cltv_value), required),
2312                                         (10, *encrypted_tlvs, required_vec),
2313                                         (12, intro_node_blinding_point, option),
2314                                         (18, HighZeroBytesDroppedBigSize(*total_msat), required)
2315                                 });
2316                         },
2317                 }
2318                 Ok(())
2319         }
2320 }
2321
2322 impl<NS: Deref> ReadableArgs<&NS> for InboundOnionPayload where NS::Target: NodeSigner {
2323         fn read<R: Read>(r: &mut R, node_signer: &NS) -> Result<Self, DecodeError> {
2324                 let mut amt = None;
2325                 let mut cltv_value = None;
2326                 let mut short_id: Option<u64> = None;
2327                 let mut payment_data: Option<FinalOnionHopData> = None;
2328                 let mut encrypted_tlvs_opt: Option<WithoutLength<Vec<u8>>> = None;
2329                 let mut intro_node_blinding_point = None;
2330                 let mut payment_metadata: Option<WithoutLength<Vec<u8>>> = None;
2331                 let mut total_msat = None;
2332                 let mut keysend_preimage: Option<PaymentPreimage> = None;
2333                 let mut custom_tlvs = Vec::new();
2334
2335                 let tlv_len = BigSize::read(r)?;
2336                 let rd = FixedLengthReader::new(r, tlv_len.0);
2337                 decode_tlv_stream_with_custom_tlv_decode!(rd, {
2338                         (2, amt, (option, encoding: (u64, HighZeroBytesDroppedBigSize))),
2339                         (4, cltv_value, (option, encoding: (u32, HighZeroBytesDroppedBigSize))),
2340                         (6, short_id, option),
2341                         (8, payment_data, option),
2342                         (10, encrypted_tlvs_opt, option),
2343                         (12, intro_node_blinding_point, option),
2344                         (16, payment_metadata, option),
2345                         (18, total_msat, (option, encoding: (u64, HighZeroBytesDroppedBigSize))),
2346                         // See https://github.com/lightning/blips/blob/master/blip-0003.md
2347                         (5482373484, keysend_preimage, option)
2348                 }, |msg_type: u64, msg_reader: &mut FixedLengthReader<_>| -> Result<bool, DecodeError> {
2349                         if msg_type < 1 << 16 { return Ok(false) }
2350                         let mut value = Vec::new();
2351                         msg_reader.read_to_end(&mut value)?;
2352                         custom_tlvs.push((msg_type, value));
2353                         Ok(true)
2354                 });
2355
2356                 if amt.unwrap_or(0) > MAX_VALUE_MSAT { return Err(DecodeError::InvalidValue) }
2357
2358                 if let Some(blinding_point) = intro_node_blinding_point {
2359                         if short_id.is_some() || payment_data.is_some() || payment_metadata.is_some() {
2360                                 return Err(DecodeError::InvalidValue)
2361                         }
2362                         let enc_tlvs = encrypted_tlvs_opt.ok_or(DecodeError::InvalidValue)?.0;
2363                         let enc_tlvs_ss = node_signer.ecdh(Recipient::Node, &blinding_point, None)
2364                                 .map_err(|_| DecodeError::InvalidValue)?;
2365                         let rho = onion_utils::gen_rho_from_shared_secret(&enc_tlvs_ss.secret_bytes());
2366                         let mut s = Cursor::new(&enc_tlvs);
2367                         let mut reader = FixedLengthReader::new(&mut s, enc_tlvs.len() as u64);
2368                         match ChaChaPolyReadAdapter::read(&mut reader, rho)? {
2369                                 ChaChaPolyReadAdapter { readable: BlindedPaymentTlvs::Forward(ForwardTlvs {
2370                                         short_channel_id, payment_relay, payment_constraints, features
2371                                 })} => {
2372                                         if amt.is_some() || cltv_value.is_some() || total_msat.is_some() {
2373                                                 return Err(DecodeError::InvalidValue)
2374                                         }
2375                                         Ok(Self::BlindedForward {
2376                                                 short_channel_id,
2377                                                 payment_relay,
2378                                                 payment_constraints,
2379                                                 features,
2380                                                 intro_node_blinding_point: blinding_point,
2381                                         })
2382                                 },
2383                                 ChaChaPolyReadAdapter { readable: BlindedPaymentTlvs::Receive(ReceiveTlvs {
2384                                         payment_secret, payment_constraints
2385                                 })} => {
2386                                         if total_msat.unwrap_or(0) > MAX_VALUE_MSAT { return Err(DecodeError::InvalidValue) }
2387                                         Ok(Self::BlindedReceive {
2388                                                 amt_msat: amt.ok_or(DecodeError::InvalidValue)?,
2389                                                 total_msat: total_msat.ok_or(DecodeError::InvalidValue)?,
2390                                                 outgoing_cltv_value: cltv_value.ok_or(DecodeError::InvalidValue)?,
2391                                                 payment_secret,
2392                                                 payment_constraints,
2393                                                 intro_node_blinding_point: blinding_point,
2394                                         })
2395                                 },
2396                         }
2397                 } else if let Some(short_channel_id) = short_id {
2398                         if payment_data.is_some() || payment_metadata.is_some() || encrypted_tlvs_opt.is_some() ||
2399                                 total_msat.is_some()
2400                         { return Err(DecodeError::InvalidValue) }
2401                         Ok(Self::Forward {
2402                                 short_channel_id,
2403                                 amt_to_forward: amt.ok_or(DecodeError::InvalidValue)?,
2404                                 outgoing_cltv_value: cltv_value.ok_or(DecodeError::InvalidValue)?,
2405                         })
2406                 } else {
2407                         if encrypted_tlvs_opt.is_some() || total_msat.is_some() {
2408                                 return Err(DecodeError::InvalidValue)
2409                         }
2410                         if let Some(data) = &payment_data {
2411                                 if data.total_msat > MAX_VALUE_MSAT {
2412                                         return Err(DecodeError::InvalidValue);
2413                                 }
2414                         }
2415                         Ok(Self::Receive {
2416                                 payment_data,
2417                                 payment_metadata: payment_metadata.map(|w| w.0),
2418                                 keysend_preimage,
2419                                 amt_msat: amt.ok_or(DecodeError::InvalidValue)?,
2420                                 outgoing_cltv_value: cltv_value.ok_or(DecodeError::InvalidValue)?,
2421                                 custom_tlvs,
2422                         })
2423                 }
2424         }
2425 }
2426
2427 impl Writeable for Ping {
2428         fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
2429                 self.ponglen.write(w)?;
2430                 vec![0u8; self.byteslen as usize].write(w)?; // size-unchecked write
2431                 Ok(())
2432         }
2433 }
2434
2435 impl Readable for Ping {
2436         fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
2437                 Ok(Ping {
2438                         ponglen: Readable::read(r)?,
2439                         byteslen: {
2440                                 let byteslen = Readable::read(r)?;
2441                                 r.read_exact(&mut vec![0u8; byteslen as usize][..])?;
2442                                 byteslen
2443                         }
2444                 })
2445         }
2446 }
2447
2448 impl Writeable for Pong {
2449         fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
2450                 vec![0u8; self.byteslen as usize].write(w)?; // size-unchecked write
2451                 Ok(())
2452         }
2453 }
2454
2455 impl Readable for Pong {
2456         fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
2457                 Ok(Pong {
2458                         byteslen: {
2459                                 let byteslen = Readable::read(r)?;
2460                                 r.read_exact(&mut vec![0u8; byteslen as usize][..])?;
2461                                 byteslen
2462                         }
2463                 })
2464         }
2465 }
2466
2467 impl Writeable for UnsignedChannelAnnouncement {
2468         fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
2469                 self.features.write(w)?;
2470                 self.chain_hash.write(w)?;
2471                 self.short_channel_id.write(w)?;
2472                 self.node_id_1.write(w)?;
2473                 self.node_id_2.write(w)?;
2474                 self.bitcoin_key_1.write(w)?;
2475                 self.bitcoin_key_2.write(w)?;
2476                 w.write_all(&self.excess_data[..])?;
2477                 Ok(())
2478         }
2479 }
2480
2481 impl Readable for UnsignedChannelAnnouncement {
2482         fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
2483                 Ok(Self {
2484                         features: Readable::read(r)?,
2485                         chain_hash: Readable::read(r)?,
2486                         short_channel_id: Readable::read(r)?,
2487                         node_id_1: Readable::read(r)?,
2488                         node_id_2: Readable::read(r)?,
2489                         bitcoin_key_1: Readable::read(r)?,
2490                         bitcoin_key_2: Readable::read(r)?,
2491                         excess_data: read_to_end(r)?,
2492                 })
2493         }
2494 }
2495
2496 impl_writeable!(ChannelAnnouncement, {
2497         node_signature_1,
2498         node_signature_2,
2499         bitcoin_signature_1,
2500         bitcoin_signature_2,
2501         contents
2502 });
2503
2504 impl Writeable for UnsignedChannelUpdate {
2505         fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
2506                 // `message_flags` used to indicate presence of `htlc_maximum_msat`, but was deprecated in the spec.
2507                 const MESSAGE_FLAGS: u8 = 1;
2508                 self.chain_hash.write(w)?;
2509                 self.short_channel_id.write(w)?;
2510                 self.timestamp.write(w)?;
2511                 let all_flags = self.flags as u16 | ((MESSAGE_FLAGS as u16) << 8);
2512                 all_flags.write(w)?;
2513                 self.cltv_expiry_delta.write(w)?;
2514                 self.htlc_minimum_msat.write(w)?;
2515                 self.fee_base_msat.write(w)?;
2516                 self.fee_proportional_millionths.write(w)?;
2517                 self.htlc_maximum_msat.write(w)?;
2518                 w.write_all(&self.excess_data[..])?;
2519                 Ok(())
2520         }
2521 }
2522
2523 impl Readable for UnsignedChannelUpdate {
2524         fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
2525                 Ok(Self {
2526                         chain_hash: Readable::read(r)?,
2527                         short_channel_id: Readable::read(r)?,
2528                         timestamp: Readable::read(r)?,
2529                         flags: {
2530                                 let flags: u16 = Readable::read(r)?;
2531                                 // Note: we ignore the `message_flags` for now, since it was deprecated by the spec.
2532                                 flags as u8
2533                         },
2534                         cltv_expiry_delta: Readable::read(r)?,
2535                         htlc_minimum_msat: Readable::read(r)?,
2536                         fee_base_msat: Readable::read(r)?,
2537                         fee_proportional_millionths: Readable::read(r)?,
2538                         htlc_maximum_msat: Readable::read(r)?,
2539                         excess_data: read_to_end(r)?,
2540                 })
2541         }
2542 }
2543
2544 impl_writeable!(ChannelUpdate, {
2545         signature,
2546         contents
2547 });
2548
2549 impl Writeable for ErrorMessage {
2550         fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
2551                 self.channel_id.write(w)?;
2552                 (self.data.len() as u16).write(w)?;
2553                 w.write_all(self.data.as_bytes())?;
2554                 Ok(())
2555         }
2556 }
2557
2558 impl Readable for ErrorMessage {
2559         fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
2560                 Ok(Self {
2561                         channel_id: Readable::read(r)?,
2562                         data: {
2563                                 let sz: usize = <u16 as Readable>::read(r)? as usize;
2564                                 let mut data = Vec::with_capacity(sz);
2565                                 data.resize(sz, 0);
2566                                 r.read_exact(&mut data)?;
2567                                 match String::from_utf8(data) {
2568                                         Ok(s) => s,
2569                                         Err(_) => return Err(DecodeError::InvalidValue),
2570                                 }
2571                         }
2572                 })
2573         }
2574 }
2575
2576 impl Writeable for WarningMessage {
2577         fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
2578                 self.channel_id.write(w)?;
2579                 (self.data.len() as u16).write(w)?;
2580                 w.write_all(self.data.as_bytes())?;
2581                 Ok(())
2582         }
2583 }
2584
2585 impl Readable for WarningMessage {
2586         fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
2587                 Ok(Self {
2588                         channel_id: Readable::read(r)?,
2589                         data: {
2590                                 let sz: usize = <u16 as Readable>::read(r)? as usize;
2591                                 let mut data = Vec::with_capacity(sz);
2592                                 data.resize(sz, 0);
2593                                 r.read_exact(&mut data)?;
2594                                 match String::from_utf8(data) {
2595                                         Ok(s) => s,
2596                                         Err(_) => return Err(DecodeError::InvalidValue),
2597                                 }
2598                         }
2599                 })
2600         }
2601 }
2602
2603 impl Writeable for UnsignedNodeAnnouncement {
2604         fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
2605                 self.features.write(w)?;
2606                 self.timestamp.write(w)?;
2607                 self.node_id.write(w)?;
2608                 w.write_all(&self.rgb)?;
2609                 self.alias.write(w)?;
2610
2611                 let mut addr_len = 0;
2612                 for addr in self.addresses.iter() {
2613                         addr_len += 1 + addr.len();
2614                 }
2615                 (addr_len + self.excess_address_data.len() as u16).write(w)?;
2616                 for addr in self.addresses.iter() {
2617                         addr.write(w)?;
2618                 }
2619                 w.write_all(&self.excess_address_data[..])?;
2620                 w.write_all(&self.excess_data[..])?;
2621                 Ok(())
2622         }
2623 }
2624
2625 impl Readable for UnsignedNodeAnnouncement {
2626         fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
2627                 let features: NodeFeatures = Readable::read(r)?;
2628                 let timestamp: u32 = Readable::read(r)?;
2629                 let node_id: NodeId = Readable::read(r)?;
2630                 let mut rgb = [0; 3];
2631                 r.read_exact(&mut rgb)?;
2632                 let alias: NodeAlias = Readable::read(r)?;
2633
2634                 let addr_len: u16 = Readable::read(r)?;
2635                 let mut addresses: Vec<SocketAddress> = Vec::new();
2636                 let mut addr_readpos = 0;
2637                 let mut excess = false;
2638                 let mut excess_byte = 0;
2639                 loop {
2640                         if addr_len <= addr_readpos { break; }
2641                         match Readable::read(r) {
2642                                 Ok(Ok(addr)) => {
2643                                         if addr_len < addr_readpos + 1 + addr.len() {
2644                                                 return Err(DecodeError::BadLengthDescriptor);
2645                                         }
2646                                         addr_readpos += (1 + addr.len()) as u16;
2647                                         addresses.push(addr);
2648                                 },
2649                                 Ok(Err(unknown_descriptor)) => {
2650                                         excess = true;
2651                                         excess_byte = unknown_descriptor;
2652                                         break;
2653                                 },
2654                                 Err(DecodeError::ShortRead) => return Err(DecodeError::BadLengthDescriptor),
2655                                 Err(e) => return Err(e),
2656                         }
2657                 }
2658
2659                 let mut excess_data = vec![];
2660                 let excess_address_data = if addr_readpos < addr_len {
2661                         let mut excess_address_data = vec![0; (addr_len - addr_readpos) as usize];
2662                         r.read_exact(&mut excess_address_data[if excess { 1 } else { 0 }..])?;
2663                         if excess {
2664                                 excess_address_data[0] = excess_byte;
2665                         }
2666                         excess_address_data
2667                 } else {
2668                         if excess {
2669                                 excess_data.push(excess_byte);
2670                         }
2671                         Vec::new()
2672                 };
2673                 excess_data.extend(read_to_end(r)?.iter());
2674                 Ok(UnsignedNodeAnnouncement {
2675                         features,
2676                         timestamp,
2677                         node_id,
2678                         rgb,
2679                         alias,
2680                         addresses,
2681                         excess_address_data,
2682                         excess_data,
2683                 })
2684         }
2685 }
2686
2687 impl_writeable!(NodeAnnouncement, {
2688         signature,
2689         contents
2690 });
2691
2692 impl Readable for QueryShortChannelIds {
2693         fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
2694                 let chain_hash: ChainHash = Readable::read(r)?;
2695
2696                 let encoding_len: u16 = Readable::read(r)?;
2697                 let encoding_type: u8 = Readable::read(r)?;
2698
2699                 // Must be encoding_type=0 uncompressed serialization. We do not
2700                 // support encoding_type=1 zlib serialization.
2701                 if encoding_type != EncodingType::Uncompressed as u8 {
2702                         return Err(DecodeError::UnsupportedCompression);
2703                 }
2704
2705                 // We expect the encoding_len to always includes the 1-byte
2706                 // encoding_type and that short_channel_ids are 8-bytes each
2707                 if encoding_len == 0 || (encoding_len - 1) % 8 != 0 {
2708                         return Err(DecodeError::InvalidValue);
2709                 }
2710
2711                 // Read short_channel_ids (8-bytes each), for the u16 encoding_len
2712                 // less the 1-byte encoding_type
2713                 let short_channel_id_count: u16 = (encoding_len - 1)/8;
2714                 let mut short_channel_ids = Vec::with_capacity(short_channel_id_count as usize);
2715                 for _ in 0..short_channel_id_count {
2716                         short_channel_ids.push(Readable::read(r)?);
2717                 }
2718
2719                 Ok(QueryShortChannelIds {
2720                         chain_hash,
2721                         short_channel_ids,
2722                 })
2723         }
2724 }
2725
2726 impl Writeable for QueryShortChannelIds {
2727         fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
2728                 // Calculated from 1-byte encoding_type plus 8-bytes per short_channel_id
2729                 let encoding_len: u16 = 1 + self.short_channel_ids.len() as u16 * 8;
2730
2731                 self.chain_hash.write(w)?;
2732                 encoding_len.write(w)?;
2733
2734                 // We only support type=0 uncompressed serialization
2735                 (EncodingType::Uncompressed as u8).write(w)?;
2736
2737                 for scid in self.short_channel_ids.iter() {
2738                         scid.write(w)?;
2739                 }
2740
2741                 Ok(())
2742         }
2743 }
2744
2745 impl_writeable_msg!(ReplyShortChannelIdsEnd, {
2746         chain_hash,
2747         full_information,
2748 }, {});
2749
2750 impl QueryChannelRange {
2751         /// Calculates the overflow safe ending block height for the query.
2752         ///
2753         /// Overflow returns `0xffffffff`, otherwise returns `first_blocknum + number_of_blocks`.
2754         pub fn end_blocknum(&self) -> u32 {
2755                 match self.first_blocknum.checked_add(self.number_of_blocks) {
2756                         Some(block) => block,
2757                         None => u32::max_value(),
2758                 }
2759         }
2760 }
2761
2762 impl_writeable_msg!(QueryChannelRange, {
2763         chain_hash,
2764         first_blocknum,
2765         number_of_blocks
2766 }, {});
2767
2768 impl Readable for ReplyChannelRange {
2769         fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
2770                 let chain_hash: ChainHash = Readable::read(r)?;
2771                 let first_blocknum: u32 = Readable::read(r)?;
2772                 let number_of_blocks: u32 = Readable::read(r)?;
2773                 let sync_complete: bool = Readable::read(r)?;
2774
2775                 let encoding_len: u16 = Readable::read(r)?;
2776                 let encoding_type: u8 = Readable::read(r)?;
2777
2778                 // Must be encoding_type=0 uncompressed serialization. We do not
2779                 // support encoding_type=1 zlib serialization.
2780                 if encoding_type != EncodingType::Uncompressed as u8 {
2781                         return Err(DecodeError::UnsupportedCompression);
2782                 }
2783
2784                 // We expect the encoding_len to always includes the 1-byte
2785                 // encoding_type and that short_channel_ids are 8-bytes each
2786                 if encoding_len == 0 || (encoding_len - 1) % 8 != 0 {
2787                         return Err(DecodeError::InvalidValue);
2788                 }
2789
2790                 // Read short_channel_ids (8-bytes each), for the u16 encoding_len
2791                 // less the 1-byte encoding_type
2792                 let short_channel_id_count: u16 = (encoding_len - 1)/8;
2793                 let mut short_channel_ids = Vec::with_capacity(short_channel_id_count as usize);
2794                 for _ in 0..short_channel_id_count {
2795                         short_channel_ids.push(Readable::read(r)?);
2796                 }
2797
2798                 Ok(ReplyChannelRange {
2799                         chain_hash,
2800                         first_blocknum,
2801                         number_of_blocks,
2802                         sync_complete,
2803                         short_channel_ids
2804                 })
2805         }
2806 }
2807
2808 impl Writeable for ReplyChannelRange {
2809         fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
2810                 let encoding_len: u16 = 1 + self.short_channel_ids.len() as u16 * 8;
2811                 self.chain_hash.write(w)?;
2812                 self.first_blocknum.write(w)?;
2813                 self.number_of_blocks.write(w)?;
2814                 self.sync_complete.write(w)?;
2815
2816                 encoding_len.write(w)?;
2817                 (EncodingType::Uncompressed as u8).write(w)?;
2818                 for scid in self.short_channel_ids.iter() {
2819                         scid.write(w)?;
2820                 }
2821
2822                 Ok(())
2823         }
2824 }
2825
2826 impl_writeable_msg!(GossipTimestampFilter, {
2827         chain_hash,
2828         first_timestamp,
2829         timestamp_range,
2830 }, {});
2831
2832 #[cfg(test)]
2833 mod tests {
2834         use std::convert::TryFrom;
2835         use bitcoin::{Transaction, TxIn, ScriptBuf, Sequence, Witness, TxOut};
2836         use hex::DisplayHex;
2837         use crate::ln::{PaymentPreimage, PaymentHash, PaymentSecret};
2838         use crate::ln::ChannelId;
2839         use crate::ln::features::{ChannelFeatures, ChannelTypeFeatures, InitFeatures, NodeFeatures};
2840         use crate::ln::msgs::{self, FinalOnionHopData, OnionErrorPacket};
2841         use crate::ln::msgs::SocketAddress;
2842         use crate::routing::gossip::{NodeAlias, NodeId};
2843         use crate::util::ser::{Writeable, Readable, ReadableArgs, Hostname, TransactionU16LenLimited};
2844         use crate::util::test_utils;
2845
2846         use bitcoin::hashes::hex::FromHex;
2847         use bitcoin::address::Address;
2848         use bitcoin::network::constants::Network;
2849         use bitcoin::blockdata::constants::ChainHash;
2850         use bitcoin::blockdata::script::Builder;
2851         use bitcoin::blockdata::opcodes;
2852         use bitcoin::hash_types::Txid;
2853         use bitcoin::locktime::absolute::LockTime;
2854
2855         use bitcoin::secp256k1::{PublicKey,SecretKey};
2856         use bitcoin::secp256k1::{Secp256k1, Message};
2857
2858         use crate::io::{self, Cursor};
2859         use crate::prelude::*;
2860         use core::str::FromStr;
2861         use crate::chain::transaction::OutPoint;
2862
2863         #[cfg(feature = "std")]
2864         use std::net::{Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4, SocketAddrV6, ToSocketAddrs};
2865         #[cfg(feature = "std")]
2866         use crate::ln::msgs::SocketAddressParseError;
2867
2868         #[test]
2869         fn encoding_channel_reestablish() {
2870                 let public_key = {
2871                         let secp_ctx = Secp256k1::new();
2872                         PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&<Vec<u8>>::from_hex("0101010101010101010101010101010101010101010101010101010101010101").unwrap()[..]).unwrap())
2873                 };
2874
2875                 let cr = msgs::ChannelReestablish {
2876                         channel_id: ChannelId::from_bytes([4, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0]),
2877                         next_local_commitment_number: 3,
2878                         next_remote_commitment_number: 4,
2879                         your_last_per_commitment_secret: [9;32],
2880                         my_current_per_commitment_point: public_key,
2881                         next_funding_txid: None,
2882                 };
2883
2884                 let encoded_value = cr.encode();
2885                 assert_eq!(
2886                         encoded_value,
2887                         vec![
2888                                 4, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, // channel_id
2889                                 0, 0, 0, 0, 0, 0, 0, 3, // next_local_commitment_number
2890                                 0, 0, 0, 0, 0, 0, 0, 4, // next_remote_commitment_number
2891                                 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, // your_last_per_commitment_secret
2892                                 3, 27, 132, 197, 86, 123, 18, 100, 64, 153, 93, 62, 213, 170, 186, 5, 101, 215, 30, 24, 52, 96, 72, 25, 255, 156, 23, 245, 233, 213, 221, 7, 143, // my_current_per_commitment_point
2893                         ]
2894                 );
2895         }
2896
2897         #[test]
2898         fn encoding_channel_reestablish_with_next_funding_txid() {
2899                 let public_key = {
2900                         let secp_ctx = Secp256k1::new();
2901                         PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&<Vec<u8>>::from_hex("0101010101010101010101010101010101010101010101010101010101010101").unwrap()[..]).unwrap())
2902                 };
2903
2904                 let cr = msgs::ChannelReestablish {
2905                         channel_id: ChannelId::from_bytes([4, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0]),
2906                         next_local_commitment_number: 3,
2907                         next_remote_commitment_number: 4,
2908                         your_last_per_commitment_secret: [9;32],
2909                         my_current_per_commitment_point: public_key,
2910                         next_funding_txid: Some(Txid::from_raw_hash(bitcoin::hashes::Hash::from_slice(&[
2911                                 48, 167, 250, 69, 152, 48, 103, 172, 164, 99, 59, 19, 23, 11, 92, 84, 15, 80, 4, 12, 98, 82, 75, 31, 201, 11, 91, 23, 98, 23, 53, 124,
2912                         ]).unwrap())),
2913                 };
2914
2915                 let encoded_value = cr.encode();
2916                 assert_eq!(
2917                         encoded_value,
2918                         vec![
2919                                 4, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, // channel_id
2920                                 0, 0, 0, 0, 0, 0, 0, 3, // next_local_commitment_number
2921                                 0, 0, 0, 0, 0, 0, 0, 4, // next_remote_commitment_number
2922                                 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, // your_last_per_commitment_secret
2923                                 3, 27, 132, 197, 86, 123, 18, 100, 64, 153, 93, 62, 213, 170, 186, 5, 101, 215, 30, 24, 52, 96, 72, 25, 255, 156, 23, 245, 233, 213, 221, 7, 143, // my_current_per_commitment_point
2924                                 0, // Type (next_funding_txid)
2925                                 32, // Length
2926                                 48, 167, 250, 69, 152, 48, 103, 172, 164, 99, 59, 19, 23, 11, 92, 84, 15, 80, 4, 12, 98, 82, 75, 31, 201, 11, 91, 23, 98, 23, 53, 124, // Value
2927                         ]
2928                 );
2929         }
2930
2931         macro_rules! get_keys_from {
2932                 ($slice: expr, $secp_ctx: expr) => {
2933                         {
2934                                 let privkey = SecretKey::from_slice(&<Vec<u8>>::from_hex($slice).unwrap()[..]).unwrap();
2935                                 let pubkey = PublicKey::from_secret_key(&$secp_ctx, &privkey);
2936                                 (privkey, pubkey)
2937                         }
2938                 }
2939         }
2940
2941         macro_rules! get_sig_on {
2942                 ($privkey: expr, $ctx: expr, $string: expr) => {
2943                         {
2944                                 let sighash = Message::from_slice(&$string.into_bytes()[..]).unwrap();
2945                                 $ctx.sign_ecdsa(&sighash, &$privkey)
2946                         }
2947                 }
2948         }
2949
2950         #[test]
2951         fn encoding_announcement_signatures() {
2952                 let secp_ctx = Secp256k1::new();
2953                 let (privkey, _) = get_keys_from!("0101010101010101010101010101010101010101010101010101010101010101", secp_ctx);
2954                 let sig_1 = get_sig_on!(privkey, secp_ctx, String::from("01010101010101010101010101010101"));
2955                 let sig_2 = get_sig_on!(privkey, secp_ctx, String::from("02020202020202020202020202020202"));
2956                 let announcement_signatures = msgs::AnnouncementSignatures {
2957                         channel_id: ChannelId::from_bytes([4, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0]),
2958                         short_channel_id: 2316138423780173,
2959                         node_signature: sig_1,
2960                         bitcoin_signature: sig_2,
2961                 };
2962
2963                 let encoded_value = announcement_signatures.encode();
2964                 assert_eq!(encoded_value, <Vec<u8>>::from_hex("040000000000000005000000000000000600000000000000070000000000000000083a840000034dd977cb9b53d93a6ff64bb5f1e158b4094b66e798fb12911168a3ccdf80a83096340a6a95da0ae8d9f776528eecdbb747eb6b545495a4319ed5378e35b21e073acf9953cef4700860f5967838eba2bae89288ad188ebf8b20bf995c3ea53a26df1876d0a3a0e13172ba286a673140190c02ba9da60a2e43a745188c8a83c7f3ef").unwrap());
2965         }
2966
2967         fn do_encoding_channel_announcement(unknown_features_bits: bool, excess_data: bool) {
2968                 let secp_ctx = Secp256k1::new();
2969                 let (privkey_1, pubkey_1) = get_keys_from!("0101010101010101010101010101010101010101010101010101010101010101", secp_ctx);
2970                 let (privkey_2, pubkey_2) = get_keys_from!("0202020202020202020202020202020202020202020202020202020202020202", secp_ctx);
2971                 let (privkey_3, pubkey_3) = get_keys_from!("0303030303030303030303030303030303030303030303030303030303030303", secp_ctx);
2972                 let (privkey_4, pubkey_4) = get_keys_from!("0404040404040404040404040404040404040404040404040404040404040404", secp_ctx);
2973                 let sig_1 = get_sig_on!(privkey_1, secp_ctx, String::from("01010101010101010101010101010101"));
2974                 let sig_2 = get_sig_on!(privkey_2, secp_ctx, String::from("01010101010101010101010101010101"));
2975                 let sig_3 = get_sig_on!(privkey_3, secp_ctx, String::from("01010101010101010101010101010101"));
2976                 let sig_4 = get_sig_on!(privkey_4, secp_ctx, String::from("01010101010101010101010101010101"));
2977                 let mut features = ChannelFeatures::empty();
2978                 if unknown_features_bits {
2979                         features = ChannelFeatures::from_le_bytes(vec![0xFF, 0xFF]);
2980                 }
2981                 let unsigned_channel_announcement = msgs::UnsignedChannelAnnouncement {
2982                         features,
2983                         chain_hash: ChainHash::using_genesis_block(Network::Bitcoin),
2984                         short_channel_id: 2316138423780173,
2985                         node_id_1: NodeId::from_pubkey(&pubkey_1),
2986                         node_id_2: NodeId::from_pubkey(&pubkey_2),
2987                         bitcoin_key_1: NodeId::from_pubkey(&pubkey_3),
2988                         bitcoin_key_2: NodeId::from_pubkey(&pubkey_4),
2989                         excess_data: if excess_data { vec![10, 0, 0, 20, 0, 0, 30, 0, 0, 40] } else { Vec::new() },
2990                 };
2991                 let channel_announcement = msgs::ChannelAnnouncement {
2992                         node_signature_1: sig_1,
2993                         node_signature_2: sig_2,
2994                         bitcoin_signature_1: sig_3,
2995                         bitcoin_signature_2: sig_4,
2996                         contents: unsigned_channel_announcement,
2997                 };
2998                 let encoded_value = channel_announcement.encode();
2999                 let mut target_value = <Vec<u8>>::from_hex("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").unwrap();
3000                 if unknown_features_bits {
3001                         target_value.append(&mut <Vec<u8>>::from_hex("0002ffff").unwrap());
3002                 } else {
3003                         target_value.append(&mut <Vec<u8>>::from_hex("0000").unwrap());
3004                 }
3005                 target_value.append(&mut <Vec<u8>>::from_hex("6fe28c0ab6f1b372c1a6a246ae63f74f931e8365e15a089c68d6190000000000").unwrap());
3006                 target_value.append(&mut <Vec<u8>>::from_hex("00083a840000034d031b84c5567b126440995d3ed5aaba0565d71e1834604819ff9c17f5e9d5dd078f024d4b6cd1361032ca9bd2aeb9d900aa4d45d9ead80ac9423374c451a7254d076602531fe6068134503d2723133227c867ac8fa6c83c537e9a44c3c5bdbdcb1fe33703462779ad4aad39514614751a71085f2f10e1c7a593e4e030efb5b8721ce55b0b").unwrap());
3007                 if excess_data {
3008                         target_value.append(&mut <Vec<u8>>::from_hex("0a00001400001e000028").unwrap());
3009                 }
3010                 assert_eq!(encoded_value, target_value);
3011         }
3012
3013         #[test]
3014         fn encoding_channel_announcement() {
3015                 do_encoding_channel_announcement(true, false);
3016                 do_encoding_channel_announcement(false, true);
3017                 do_encoding_channel_announcement(false, false);
3018                 do_encoding_channel_announcement(true, true);
3019         }
3020
3021         fn do_encoding_node_announcement(unknown_features_bits: bool, ipv4: bool, ipv6: bool, onionv2: bool, onionv3: bool, hostname: bool, excess_address_data: bool, excess_data: bool) {
3022                 let secp_ctx = Secp256k1::new();
3023                 let (privkey_1, pubkey_1) = get_keys_from!("0101010101010101010101010101010101010101010101010101010101010101", secp_ctx);
3024                 let sig_1 = get_sig_on!(privkey_1, secp_ctx, String::from("01010101010101010101010101010101"));
3025                 let features = if unknown_features_bits {
3026                         NodeFeatures::from_le_bytes(vec![0xFF, 0xFF])
3027                 } else {
3028                         // Set to some features we may support
3029                         NodeFeatures::from_le_bytes(vec![2 | 1 << 5])
3030                 };
3031                 let mut addresses = Vec::new();
3032                 if ipv4 {
3033                         addresses.push(SocketAddress::TcpIpV4 {
3034                                 addr: [255, 254, 253, 252],
3035                                 port: 9735
3036                         });
3037                 }
3038                 if ipv6 {
3039                         addresses.push(SocketAddress::TcpIpV6 {
3040                                 addr: [255, 254, 253, 252, 251, 250, 249, 248, 247, 246, 245, 244, 243, 242, 241, 240],
3041                                 port: 9735
3042                         });
3043                 }
3044                 if onionv2 {
3045                         addresses.push(msgs::SocketAddress::OnionV2(
3046                                 [255, 254, 253, 252, 251, 250, 249, 248, 247, 246, 38, 7]
3047                         ));
3048                 }
3049                 if onionv3 {
3050                         addresses.push(msgs::SocketAddress::OnionV3 {
3051                                 ed25519_pubkey: [255, 254, 253, 252, 251, 250, 249, 248, 247, 246, 245, 244, 243, 242, 241, 240, 239, 238, 237, 236, 235, 234, 233, 232, 231, 230, 229, 228, 227, 226, 225, 224],
3052                                 checksum: 32,
3053                                 version: 16,
3054                                 port: 9735
3055                         });
3056                 }
3057                 if hostname {
3058                         addresses.push(SocketAddress::Hostname {
3059                                 hostname: Hostname::try_from(String::from("host")).unwrap(),
3060                                 port: 9735,
3061                         });
3062                 }
3063                 let mut addr_len = 0;
3064                 for addr in &addresses {
3065                         addr_len += addr.len() + 1;
3066                 }
3067                 let unsigned_node_announcement = msgs::UnsignedNodeAnnouncement {
3068                         features,
3069                         timestamp: 20190119,
3070                         node_id: NodeId::from_pubkey(&pubkey_1),
3071                         rgb: [32; 3],
3072                         alias: NodeAlias([16;32]),
3073                         addresses,
3074                         excess_address_data: if excess_address_data { vec![33, 108, 40, 11, 83, 149, 162, 84, 110, 126, 75, 38, 99, 224, 79, 129, 22, 34, 241, 90, 79, 146, 232, 58, 162, 233, 43, 162, 165, 115, 193, 57, 20, 44, 84, 174, 99, 7, 42, 30, 193, 238, 125, 192, 192, 75, 222, 92, 132, 120, 6, 23, 42, 160, 92, 146, 194, 42, 232, 227, 8, 209, 210, 105] } else { Vec::new() },
3075                         excess_data: if excess_data { vec![59, 18, 204, 25, 92, 224, 162, 209, 189, 166, 168, 139, 239, 161, 159, 160, 127, 81, 202, 167, 92, 232, 56, 55, 242, 137, 101, 96, 11, 138, 172, 171, 8, 85, 255, 176, 231, 65, 236, 95, 124, 65, 66, 30, 152, 41, 169, 212, 134, 17, 200, 200, 49, 247, 27, 229, 234, 115, 230, 101, 148, 151, 127, 253] } else { Vec::new() },
3076                 };
3077                 addr_len += unsigned_node_announcement.excess_address_data.len() as u16;
3078                 let node_announcement = msgs::NodeAnnouncement {
3079                         signature: sig_1,
3080                         contents: unsigned_node_announcement,
3081                 };
3082                 let encoded_value = node_announcement.encode();
3083                 let mut target_value = <Vec<u8>>::from_hex("d977cb9b53d93a6ff64bb5f1e158b4094b66e798fb12911168a3ccdf80a83096340a6a95da0ae8d9f776528eecdbb747eb6b545495a4319ed5378e35b21e073a").unwrap();
3084                 if unknown_features_bits {
3085                         target_value.append(&mut <Vec<u8>>::from_hex("0002ffff").unwrap());
3086                 } else {
3087                         target_value.append(&mut <Vec<u8>>::from_hex("000122").unwrap());
3088                 }
3089                 target_value.append(&mut <Vec<u8>>::from_hex("013413a7031b84c5567b126440995d3ed5aaba0565d71e1834604819ff9c17f5e9d5dd078f2020201010101010101010101010101010101010101010101010101010101010101010").unwrap());
3090                 target_value.append(&mut vec![(addr_len >> 8) as u8, addr_len as u8]);
3091                 if ipv4 {
3092                         target_value.append(&mut <Vec<u8>>::from_hex("01fffefdfc2607").unwrap());
3093                 }
3094                 if ipv6 {
3095                         target_value.append(&mut <Vec<u8>>::from_hex("02fffefdfcfbfaf9f8f7f6f5f4f3f2f1f02607").unwrap());
3096                 }
3097                 if onionv2 {
3098                         target_value.append(&mut <Vec<u8>>::from_hex("03fffefdfcfbfaf9f8f7f62607").unwrap());
3099                 }
3100                 if onionv3 {
3101                         target_value.append(&mut <Vec<u8>>::from_hex("04fffefdfcfbfaf9f8f7f6f5f4f3f2f1f0efeeedecebeae9e8e7e6e5e4e3e2e1e00020102607").unwrap());
3102                 }
3103                 if hostname {
3104                         target_value.append(&mut <Vec<u8>>::from_hex("0504686f73742607").unwrap());
3105                 }
3106                 if excess_address_data {
3107                         target_value.append(&mut <Vec<u8>>::from_hex("216c280b5395a2546e7e4b2663e04f811622f15a4f92e83aa2e92ba2a573c139142c54ae63072a1ec1ee7dc0c04bde5c847806172aa05c92c22ae8e308d1d269").unwrap());
3108                 }
3109                 if excess_data {
3110                         target_value.append(&mut <Vec<u8>>::from_hex("3b12cc195ce0a2d1bda6a88befa19fa07f51caa75ce83837f28965600b8aacab0855ffb0e741ec5f7c41421e9829a9d48611c8c831f71be5ea73e66594977ffd").unwrap());
3111                 }
3112                 assert_eq!(encoded_value, target_value);
3113         }
3114
3115         #[test]
3116         fn encoding_node_announcement() {
3117                 do_encoding_node_announcement(true, true, true, true, true, true, true, true);
3118                 do_encoding_node_announcement(false, false, false, false, false, false, false, false);
3119                 do_encoding_node_announcement(false, true, false, false, false, false, false, false);
3120                 do_encoding_node_announcement(false, false, true, false, false, false, false, false);
3121                 do_encoding_node_announcement(false, false, false, true, false, false, false, false);
3122                 do_encoding_node_announcement(false, false, false, false, true, false, false, false);
3123                 do_encoding_node_announcement(false, false, false, false, false, true, false, false);
3124                 do_encoding_node_announcement(false, false, false, false, false, false, true, false);
3125                 do_encoding_node_announcement(false, true, false, true, false, false, true, false);
3126                 do_encoding_node_announcement(false, false, true, false, true, false, false, false);
3127         }
3128
3129         fn do_encoding_channel_update(direction: bool, disable: bool, excess_data: bool) {
3130                 let secp_ctx = Secp256k1::new();
3131                 let (privkey_1, _) = get_keys_from!("0101010101010101010101010101010101010101010101010101010101010101", secp_ctx);
3132                 let sig_1 = get_sig_on!(privkey_1, secp_ctx, String::from("01010101010101010101010101010101"));
3133                 let unsigned_channel_update = msgs::UnsignedChannelUpdate {
3134                         chain_hash: ChainHash::using_genesis_block(Network::Bitcoin),
3135                         short_channel_id: 2316138423780173,
3136                         timestamp: 20190119,
3137                         flags: if direction { 1 } else { 0 } | if disable { 1 << 1 } else { 0 },
3138                         cltv_expiry_delta: 144,
3139                         htlc_minimum_msat: 1000000,
3140                         htlc_maximum_msat: 131355275467161,
3141                         fee_base_msat: 10000,
3142                         fee_proportional_millionths: 20,
3143                         excess_data: if excess_data { vec![0, 0, 0, 0, 59, 154, 202, 0] } else { Vec::new() }
3144                 };
3145                 let channel_update = msgs::ChannelUpdate {
3146                         signature: sig_1,
3147                         contents: unsigned_channel_update
3148                 };
3149                 let encoded_value = channel_update.encode();
3150                 let mut target_value = <Vec<u8>>::from_hex("d977cb9b53d93a6ff64bb5f1e158b4094b66e798fb12911168a3ccdf80a83096340a6a95da0ae8d9f776528eecdbb747eb6b545495a4319ed5378e35b21e073a").unwrap();
3151                 target_value.append(&mut <Vec<u8>>::from_hex("6fe28c0ab6f1b372c1a6a246ae63f74f931e8365e15a089c68d6190000000000").unwrap());
3152                 target_value.append(&mut <Vec<u8>>::from_hex("00083a840000034d013413a7").unwrap());
3153                 target_value.append(&mut <Vec<u8>>::from_hex("01").unwrap());
3154                 target_value.append(&mut <Vec<u8>>::from_hex("00").unwrap());
3155                 if direction {
3156                         let flag = target_value.last_mut().unwrap();
3157                         *flag = 1;
3158                 }
3159                 if disable {
3160                         let flag = target_value.last_mut().unwrap();
3161                         *flag = *flag | 1 << 1;
3162                 }
3163                 target_value.append(&mut <Vec<u8>>::from_hex("009000000000000f42400000271000000014").unwrap());
3164                 target_value.append(&mut <Vec<u8>>::from_hex("0000777788889999").unwrap());
3165                 if excess_data {
3166                         target_value.append(&mut <Vec<u8>>::from_hex("000000003b9aca00").unwrap());
3167                 }
3168                 assert_eq!(encoded_value, target_value);
3169         }
3170
3171         #[test]
3172         fn encoding_channel_update() {
3173                 do_encoding_channel_update(false, false, false);
3174                 do_encoding_channel_update(false, false, true);
3175                 do_encoding_channel_update(true, false, false);
3176                 do_encoding_channel_update(true, false, true);
3177                 do_encoding_channel_update(false, true, false);
3178                 do_encoding_channel_update(false, true, true);
3179                 do_encoding_channel_update(true, true, false);
3180                 do_encoding_channel_update(true, true, true);
3181         }
3182
3183         fn do_encoding_open_channel(random_bit: bool, shutdown: bool, incl_chan_type: bool) {
3184                 let secp_ctx = Secp256k1::new();
3185                 let (_, pubkey_1) = get_keys_from!("0101010101010101010101010101010101010101010101010101010101010101", secp_ctx);
3186                 let (_, pubkey_2) = get_keys_from!("0202020202020202020202020202020202020202020202020202020202020202", secp_ctx);
3187                 let (_, pubkey_3) = get_keys_from!("0303030303030303030303030303030303030303030303030303030303030303", secp_ctx);
3188                 let (_, pubkey_4) = get_keys_from!("0404040404040404040404040404040404040404040404040404040404040404", secp_ctx);
3189                 let (_, pubkey_5) = get_keys_from!("0505050505050505050505050505050505050505050505050505050505050505", secp_ctx);
3190                 let (_, pubkey_6) = get_keys_from!("0606060606060606060606060606060606060606060606060606060606060606", secp_ctx);
3191                 let open_channel = msgs::OpenChannel {
3192                         chain_hash: ChainHash::using_genesis_block(Network::Bitcoin),
3193                         temporary_channel_id: ChannelId::from_bytes([2; 32]),
3194                         funding_satoshis: 1311768467284833366,
3195                         push_msat: 2536655962884945560,
3196                         dust_limit_satoshis: 3608586615801332854,
3197                         max_htlc_value_in_flight_msat: 8517154655701053848,
3198                         channel_reserve_satoshis: 8665828695742877976,
3199                         htlc_minimum_msat: 2316138423780173,
3200                         feerate_per_kw: 821716,
3201                         to_self_delay: 49340,
3202                         max_accepted_htlcs: 49340,
3203                         funding_pubkey: pubkey_1,
3204                         revocation_basepoint: pubkey_2,
3205                         payment_point: pubkey_3,
3206                         delayed_payment_basepoint: pubkey_4,
3207                         htlc_basepoint: pubkey_5,
3208                         first_per_commitment_point: pubkey_6,
3209                         channel_flags: if random_bit { 1 << 5 } else { 0 },
3210                         shutdown_scriptpubkey: if shutdown { Some(Address::p2pkh(&::bitcoin::PublicKey{compressed: true, inner: pubkey_1}, Network::Testnet).script_pubkey()) } else { None },
3211                         channel_type: if incl_chan_type { Some(ChannelTypeFeatures::empty()) } else { None },
3212                 };
3213                 let encoded_value = open_channel.encode();
3214                 let mut target_value = Vec::new();
3215                 target_value.append(&mut <Vec<u8>>::from_hex("6fe28c0ab6f1b372c1a6a246ae63f74f931e8365e15a089c68d6190000000000").unwrap());
3216                 target_value.append(&mut <Vec<u8>>::from_hex("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").unwrap());
3217                 if random_bit {
3218                         target_value.append(&mut <Vec<u8>>::from_hex("20").unwrap());
3219                 } else {
3220                         target_value.append(&mut <Vec<u8>>::from_hex("00").unwrap());
3221                 }
3222                 if shutdown {
3223                         target_value.append(&mut <Vec<u8>>::from_hex("001976a91479b000887626b294a914501a4cd226b58b23598388ac").unwrap());
3224                 }
3225                 if incl_chan_type {
3226                         target_value.append(&mut <Vec<u8>>::from_hex("0100").unwrap());
3227                 }
3228                 assert_eq!(encoded_value, target_value);
3229         }
3230
3231         #[test]
3232         fn encoding_open_channel() {
3233                 do_encoding_open_channel(false, false, false);
3234                 do_encoding_open_channel(false, false, true);
3235                 do_encoding_open_channel(false, true, false);
3236                 do_encoding_open_channel(false, true, true);
3237                 do_encoding_open_channel(true, false, false);
3238                 do_encoding_open_channel(true, false, true);
3239                 do_encoding_open_channel(true, true, false);
3240                 do_encoding_open_channel(true, true, true);
3241         }
3242
3243         fn do_encoding_open_channelv2(random_bit: bool, shutdown: bool, incl_chan_type: bool, require_confirmed_inputs: bool) {
3244                 let secp_ctx = Secp256k1::new();
3245                 let (_, pubkey_1) = get_keys_from!("0101010101010101010101010101010101010101010101010101010101010101", secp_ctx);
3246                 let (_, pubkey_2) = get_keys_from!("0202020202020202020202020202020202020202020202020202020202020202", secp_ctx);
3247                 let (_, pubkey_3) = get_keys_from!("0303030303030303030303030303030303030303030303030303030303030303", secp_ctx);
3248                 let (_, pubkey_4) = get_keys_from!("0404040404040404040404040404040404040404040404040404040404040404", secp_ctx);
3249                 let (_, pubkey_5) = get_keys_from!("0505050505050505050505050505050505050505050505050505050505050505", secp_ctx);
3250                 let (_, pubkey_6) = get_keys_from!("0606060606060606060606060606060606060606060606060606060606060606", secp_ctx);
3251                 let (_, pubkey_7) = get_keys_from!("0707070707070707070707070707070707070707070707070707070707070707", secp_ctx);
3252                 let open_channelv2 = msgs::OpenChannelV2 {
3253                         chain_hash: ChainHash::using_genesis_block(Network::Bitcoin),
3254                         temporary_channel_id: ChannelId::from_bytes([2; 32]),
3255                         funding_feerate_sat_per_1000_weight: 821716,
3256                         commitment_feerate_sat_per_1000_weight: 821716,
3257                         funding_satoshis: 1311768467284833366,
3258                         dust_limit_satoshis: 3608586615801332854,
3259                         max_htlc_value_in_flight_msat: 8517154655701053848,
3260                         htlc_minimum_msat: 2316138423780173,
3261                         to_self_delay: 49340,
3262                         max_accepted_htlcs: 49340,
3263                         locktime: 305419896,
3264                         funding_pubkey: pubkey_1,
3265                         revocation_basepoint: pubkey_2,
3266                         payment_basepoint: pubkey_3,
3267                         delayed_payment_basepoint: pubkey_4,
3268                         htlc_basepoint: pubkey_5,
3269                         first_per_commitment_point: pubkey_6,
3270                         second_per_commitment_point: pubkey_7,
3271                         channel_flags: if random_bit { 1 << 5 } else { 0 },
3272                         shutdown_scriptpubkey: if shutdown { Some(Address::p2pkh(&::bitcoin::PublicKey{compressed: true, inner: pubkey_1}, Network::Testnet).script_pubkey()) } else { None },
3273                         channel_type: if incl_chan_type { Some(ChannelTypeFeatures::empty()) } else { None },
3274                         require_confirmed_inputs: if require_confirmed_inputs { Some(()) } else { None },
3275                 };
3276                 let encoded_value = open_channelv2.encode();
3277                 let mut target_value = Vec::new();
3278                 target_value.append(&mut <Vec<u8>>::from_hex("6fe28c0ab6f1b372c1a6a246ae63f74f931e8365e15a089c68d6190000000000").unwrap());
3279                 target_value.append(&mut <Vec<u8>>::from_hex("0202020202020202020202020202020202020202020202020202020202020202").unwrap());
3280                 target_value.append(&mut <Vec<u8>>::from_hex("000c89d4").unwrap());
3281                 target_value.append(&mut <Vec<u8>>::from_hex("000c89d4").unwrap());
3282                 target_value.append(&mut <Vec<u8>>::from_hex("1234567890123456").unwrap());
3283                 target_value.append(&mut <Vec<u8>>::from_hex("3214466870114476").unwrap());
3284                 target_value.append(&mut <Vec<u8>>::from_hex("7633030896203198").unwrap());
3285                 target_value.append(&mut <Vec<u8>>::from_hex("00083a840000034d").unwrap());
3286                 target_value.append(&mut <Vec<u8>>::from_hex("c0bc").unwrap());
3287                 target_value.append(&mut <Vec<u8>>::from_hex("c0bc").unwrap());
3288                 target_value.append(&mut <Vec<u8>>::from_hex("12345678").unwrap());
3289                 target_value.append(&mut <Vec<u8>>::from_hex("031b84c5567b126440995d3ed5aaba0565d71e1834604819ff9c17f5e9d5dd078f").unwrap());
3290                 target_value.append(&mut <Vec<u8>>::from_hex("024d4b6cd1361032ca9bd2aeb9d900aa4d45d9ead80ac9423374c451a7254d0766").unwrap());
3291                 target_value.append(&mut <Vec<u8>>::from_hex("02531fe6068134503d2723133227c867ac8fa6c83c537e9a44c3c5bdbdcb1fe337").unwrap());
3292                 target_value.append(&mut <Vec<u8>>::from_hex("03462779ad4aad39514614751a71085f2f10e1c7a593e4e030efb5b8721ce55b0b").unwrap());
3293                 target_value.append(&mut <Vec<u8>>::from_hex("0362c0a046dacce86ddd0343c6d3c7c79c2208ba0d9c9cf24a6d046d21d21f90f7").unwrap());
3294                 target_value.append(&mut <Vec<u8>>::from_hex("03f006a18d5653c4edf5391ff23a61f03ff83d237e880ee61187fa9f379a028e0a").unwrap());
3295                 target_value.append(&mut <Vec<u8>>::from_hex("02989c0b76cb563971fdc9bef31ec06c3560f3249d6ee9e5d83c57625596e05f6f").unwrap());
3296
3297                 if random_bit {
3298                         target_value.append(&mut <Vec<u8>>::from_hex("20").unwrap());
3299                 } else {
3300                         target_value.append(&mut <Vec<u8>>::from_hex("00").unwrap());
3301                 }
3302                 if shutdown {
3303                         target_value.append(&mut <Vec<u8>>::from_hex("001b").unwrap()); // Type 0 + Length 27
3304                         target_value.append(&mut <Vec<u8>>::from_hex("001976a91479b000887626b294a914501a4cd226b58b23598388ac").unwrap());
3305                 }
3306                 if incl_chan_type {
3307                         target_value.append(&mut <Vec<u8>>::from_hex("0100").unwrap());
3308                 }
3309                 if require_confirmed_inputs {
3310                         target_value.append(&mut <Vec<u8>>::from_hex("0200").unwrap());
3311                 }
3312                 assert_eq!(encoded_value, target_value);
3313         }
3314
3315         #[test]
3316         fn encoding_open_channelv2() {
3317                 do_encoding_open_channelv2(false, false, false, false);
3318                 do_encoding_open_channelv2(false, false, false, true);
3319                 do_encoding_open_channelv2(false, false, true, false);
3320                 do_encoding_open_channelv2(false, false, true, true);
3321                 do_encoding_open_channelv2(false, true, false, false);
3322                 do_encoding_open_channelv2(false, true, false, true);
3323                 do_encoding_open_channelv2(false, true, true, false);
3324                 do_encoding_open_channelv2(false, true, true, true);
3325                 do_encoding_open_channelv2(true, false, false, false);
3326                 do_encoding_open_channelv2(true, false, false, true);
3327                 do_encoding_open_channelv2(true, false, true, false);
3328                 do_encoding_open_channelv2(true, false, true, true);
3329                 do_encoding_open_channelv2(true, true, false, false);
3330                 do_encoding_open_channelv2(true, true, false, true);
3331                 do_encoding_open_channelv2(true, true, true, false);
3332                 do_encoding_open_channelv2(true, true, true, true);
3333         }
3334
3335         fn do_encoding_accept_channel(shutdown: bool) {
3336                 let secp_ctx = Secp256k1::new();
3337                 let (_, pubkey_1) = get_keys_from!("0101010101010101010101010101010101010101010101010101010101010101", secp_ctx);
3338                 let (_, pubkey_2) = get_keys_from!("0202020202020202020202020202020202020202020202020202020202020202", secp_ctx);
3339                 let (_, pubkey_3) = get_keys_from!("0303030303030303030303030303030303030303030303030303030303030303", secp_ctx);
3340                 let (_, pubkey_4) = get_keys_from!("0404040404040404040404040404040404040404040404040404040404040404", secp_ctx);
3341                 let (_, pubkey_5) = get_keys_from!("0505050505050505050505050505050505050505050505050505050505050505", secp_ctx);
3342                 let (_, pubkey_6) = get_keys_from!("0606060606060606060606060606060606060606060606060606060606060606", secp_ctx);
3343                 let accept_channel = msgs::AcceptChannel {
3344                         temporary_channel_id: ChannelId::from_bytes([2; 32]),
3345                         dust_limit_satoshis: 1311768467284833366,
3346                         max_htlc_value_in_flight_msat: 2536655962884945560,
3347                         channel_reserve_satoshis: 3608586615801332854,
3348                         htlc_minimum_msat: 2316138423780173,
3349                         minimum_depth: 821716,
3350                         to_self_delay: 49340,
3351                         max_accepted_htlcs: 49340,
3352                         funding_pubkey: pubkey_1,
3353                         revocation_basepoint: pubkey_2,
3354                         payment_point: pubkey_3,
3355                         delayed_payment_basepoint: pubkey_4,
3356                         htlc_basepoint: pubkey_5,
3357                         first_per_commitment_point: pubkey_6,
3358                         shutdown_scriptpubkey: if shutdown { Some(Address::p2pkh(&::bitcoin::PublicKey{compressed: true, inner: pubkey_1}, Network::Testnet).script_pubkey()) } else { None },
3359                         channel_type: None,
3360                         #[cfg(taproot)]
3361                         next_local_nonce: None,
3362                 };
3363                 let encoded_value = accept_channel.encode();
3364                 let mut target_value = <Vec<u8>>::from_hex("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").unwrap();
3365                 if shutdown {
3366                         target_value.append(&mut <Vec<u8>>::from_hex("001976a91479b000887626b294a914501a4cd226b58b23598388ac").unwrap());
3367                 }
3368                 assert_eq!(encoded_value, target_value);
3369         }
3370
3371         #[test]
3372         fn encoding_accept_channel() {
3373                 do_encoding_accept_channel(false);
3374                 do_encoding_accept_channel(true);
3375         }
3376
3377         fn do_encoding_accept_channelv2(shutdown: bool) {
3378                 let secp_ctx = Secp256k1::new();
3379                 let (_, pubkey_1) = get_keys_from!("0101010101010101010101010101010101010101010101010101010101010101", secp_ctx);
3380                 let (_, pubkey_2) = get_keys_from!("0202020202020202020202020202020202020202020202020202020202020202", secp_ctx);
3381                 let (_, pubkey_3) = get_keys_from!("0303030303030303030303030303030303030303030303030303030303030303", secp_ctx);
3382                 let (_, pubkey_4) = get_keys_from!("0404040404040404040404040404040404040404040404040404040404040404", secp_ctx);
3383                 let (_, pubkey_5) = get_keys_from!("0505050505050505050505050505050505050505050505050505050505050505", secp_ctx);
3384                 let (_, pubkey_6) = get_keys_from!("0606060606060606060606060606060606060606060606060606060606060606", secp_ctx);
3385                 let (_, pubkey_7) = get_keys_from!("0707070707070707070707070707070707070707070707070707070707070707", secp_ctx);
3386                 let accept_channelv2 = msgs::AcceptChannelV2 {
3387                         temporary_channel_id: ChannelId::from_bytes([2; 32]),
3388                         funding_satoshis: 1311768467284833366,
3389                         dust_limit_satoshis: 1311768467284833366,
3390                         max_htlc_value_in_flight_msat: 2536655962884945560,
3391                         htlc_minimum_msat: 2316138423780173,
3392                         minimum_depth: 821716,
3393                         to_self_delay: 49340,
3394                         max_accepted_htlcs: 49340,
3395                         funding_pubkey: pubkey_1,
3396                         revocation_basepoint: pubkey_2,
3397                         payment_basepoint: pubkey_3,
3398                         delayed_payment_basepoint: pubkey_4,
3399                         htlc_basepoint: pubkey_5,
3400                         first_per_commitment_point: pubkey_6,
3401                         second_per_commitment_point: pubkey_7,
3402                         shutdown_scriptpubkey: if shutdown { Some(Address::p2pkh(&::bitcoin::PublicKey{compressed: true, inner: pubkey_1}, Network::Testnet).script_pubkey()) } else { None },
3403                         channel_type: None,
3404                         require_confirmed_inputs: None,
3405                 };
3406                 let encoded_value = accept_channelv2.encode();
3407                 let mut target_value = <Vec<u8>>::from_hex("0202020202020202020202020202020202020202020202020202020202020202").unwrap(); // temporary_channel_id
3408                 target_value.append(&mut <Vec<u8>>::from_hex("1234567890123456").unwrap()); // funding_satoshis
3409                 target_value.append(&mut <Vec<u8>>::from_hex("1234567890123456").unwrap()); // dust_limit_satoshis
3410                 target_value.append(&mut <Vec<u8>>::from_hex("2334032891223698").unwrap()); // max_htlc_value_in_flight_msat
3411                 target_value.append(&mut <Vec<u8>>::from_hex("00083a840000034d").unwrap()); // htlc_minimum_msat
3412                 target_value.append(&mut <Vec<u8>>::from_hex("000c89d4").unwrap()); //  minimum_depth
3413                 target_value.append(&mut <Vec<u8>>::from_hex("c0bc").unwrap()); // to_self_delay
3414                 target_value.append(&mut <Vec<u8>>::from_hex("c0bc").unwrap()); // max_accepted_htlcs
3415                 target_value.append(&mut <Vec<u8>>::from_hex("031b84c5567b126440995d3ed5aaba0565d71e1834604819ff9c17f5e9d5dd078f").unwrap()); // funding_pubkey
3416                 target_value.append(&mut <Vec<u8>>::from_hex("024d4b6cd1361032ca9bd2aeb9d900aa4d45d9ead80ac9423374c451a7254d0766").unwrap()); // revocation_basepoint
3417                 target_value.append(&mut <Vec<u8>>::from_hex("02531fe6068134503d2723133227c867ac8fa6c83c537e9a44c3c5bdbdcb1fe337").unwrap()); // payment_basepoint
3418                 target_value.append(&mut <Vec<u8>>::from_hex("03462779ad4aad39514614751a71085f2f10e1c7a593e4e030efb5b8721ce55b0b").unwrap()); // delayed_payment_basepoint
3419                 target_value.append(&mut <Vec<u8>>::from_hex("0362c0a046dacce86ddd0343c6d3c7c79c2208ba0d9c9cf24a6d046d21d21f90f7").unwrap()); // htlc_basepoint
3420                 target_value.append(&mut <Vec<u8>>::from_hex("03f006a18d5653c4edf5391ff23a61f03ff83d237e880ee61187fa9f379a028e0a").unwrap()); // first_per_commitment_point
3421                 target_value.append(&mut <Vec<u8>>::from_hex("02989c0b76cb563971fdc9bef31ec06c3560f3249d6ee9e5d83c57625596e05f6f").unwrap()); // second_per_commitment_point
3422                 if shutdown {
3423                         target_value.append(&mut <Vec<u8>>::from_hex("001b").unwrap()); // Type 0 + Length 27
3424                         target_value.append(&mut <Vec<u8>>::from_hex("001976a91479b000887626b294a914501a4cd226b58b23598388ac").unwrap());
3425                 }
3426                 assert_eq!(encoded_value, target_value);
3427         }
3428
3429         #[test]
3430         fn encoding_accept_channelv2() {
3431                 do_encoding_accept_channelv2(false);
3432                 do_encoding_accept_channelv2(true);
3433         }
3434
3435         #[test]
3436         fn encoding_funding_created() {
3437                 let secp_ctx = Secp256k1::new();
3438                 let (privkey_1, _) = get_keys_from!("0101010101010101010101010101010101010101010101010101010101010101", secp_ctx);
3439                 let sig_1 = get_sig_on!(privkey_1, secp_ctx, String::from("01010101010101010101010101010101"));
3440                 let funding_created = msgs::FundingCreated {
3441                         temporary_channel_id: ChannelId::from_bytes([2; 32]),
3442                         funding_txid: Txid::from_str("c2d4449afa8d26140898dd54d3390b057ba2a5afcf03ba29d7dc0d8b9ffe966e").unwrap(),
3443                         funding_output_index: 255,
3444                         signature: sig_1,
3445                         #[cfg(taproot)]
3446                         partial_signature_with_nonce: None,
3447                         #[cfg(taproot)]
3448                         next_local_nonce: None,
3449                 };
3450                 let encoded_value = funding_created.encode();
3451                 let target_value = <Vec<u8>>::from_hex("02020202020202020202020202020202020202020202020202020202020202026e96fe9f8b0ddcd729ba03cfafa5a27b050b39d354dd980814268dfa9a44d4c200ffd977cb9b53d93a6ff64bb5f1e158b4094b66e798fb12911168a3ccdf80a83096340a6a95da0ae8d9f776528eecdbb747eb6b545495a4319ed5378e35b21e073a").unwrap();
3452                 assert_eq!(encoded_value, target_value);
3453         }
3454
3455         #[test]
3456         fn encoding_funding_signed() {
3457                 let secp_ctx = Secp256k1::new();
3458                 let (privkey_1, _) = get_keys_from!("0101010101010101010101010101010101010101010101010101010101010101", secp_ctx);
3459                 let sig_1 = get_sig_on!(privkey_1, secp_ctx, String::from("01010101010101010101010101010101"));
3460                 let funding_signed = msgs::FundingSigned {
3461                         channel_id: ChannelId::from_bytes([2; 32]),
3462                         signature: sig_1,
3463                         #[cfg(taproot)]
3464                         partial_signature_with_nonce: None,
3465                 };
3466                 let encoded_value = funding_signed.encode();
3467                 let target_value = <Vec<u8>>::from_hex("0202020202020202020202020202020202020202020202020202020202020202d977cb9b53d93a6ff64bb5f1e158b4094b66e798fb12911168a3ccdf80a83096340a6a95da0ae8d9f776528eecdbb747eb6b545495a4319ed5378e35b21e073a").unwrap();
3468                 assert_eq!(encoded_value, target_value);
3469         }
3470
3471         #[test]
3472         fn encoding_channel_ready() {
3473                 let secp_ctx = Secp256k1::new();
3474                 let (_, pubkey_1,) = get_keys_from!("0101010101010101010101010101010101010101010101010101010101010101", secp_ctx);
3475                 let channel_ready = msgs::ChannelReady {
3476                         channel_id: ChannelId::from_bytes([2; 32]),
3477                         next_per_commitment_point: pubkey_1,
3478                         short_channel_id_alias: None,
3479                 };
3480                 let encoded_value = channel_ready.encode();
3481                 let target_value = <Vec<u8>>::from_hex("0202020202020202020202020202020202020202020202020202020202020202031b84c5567b126440995d3ed5aaba0565d71e1834604819ff9c17f5e9d5dd078f").unwrap();
3482                 assert_eq!(encoded_value, target_value);
3483         }
3484
3485         #[test]
3486         fn encoding_splice() {
3487                 let secp_ctx = Secp256k1::new();
3488                 let (_, pubkey_1,) = get_keys_from!("0101010101010101010101010101010101010101010101010101010101010101", secp_ctx);
3489                 let splice = msgs::Splice {
3490                         chain_hash: ChainHash::from_hex("6fe28c0ab6f1b372c1a6a246ae63f74f931e8365e15a089c68d6190000000000").unwrap(),
3491                         channel_id: ChannelId::from_bytes([2; 32]),
3492                         relative_satoshis: 123456,
3493                         funding_feerate_perkw: 2000,
3494                         locktime: 0,
3495                         funding_pubkey: pubkey_1,
3496                 };
3497                 let encoded_value = splice.encode();
3498                 assert_eq!(encoded_value.as_hex().to_string(), "02020202020202020202020202020202020202020202020202020202020202026fe28c0ab6f1b372c1a6a246ae63f74f931e8365e15a089c68d6190000000000000000000001e240000007d000000000031b84c5567b126440995d3ed5aaba0565d71e1834604819ff9c17f5e9d5dd078f");
3499         }
3500
3501         #[test]
3502         fn encoding_stfu() {
3503                 let stfu = msgs::Stfu {
3504                         channel_id: ChannelId::from_bytes([2; 32]),
3505                         initiator: 1,
3506                 };
3507                 let encoded_value = stfu.encode();
3508                 assert_eq!(encoded_value.as_hex().to_string(), "020202020202020202020202020202020202020202020202020202020202020201");
3509         }
3510
3511         #[test]
3512         fn encoding_splice_ack() {
3513                 let secp_ctx = Secp256k1::new();
3514                 let (_, pubkey_1,) = get_keys_from!("0101010101010101010101010101010101010101010101010101010101010101", secp_ctx);
3515                 let splice = msgs::SpliceAck {
3516                         chain_hash: ChainHash::from_hex("6fe28c0ab6f1b372c1a6a246ae63f74f931e8365e15a089c68d6190000000000").unwrap(),
3517                         channel_id: ChannelId::from_bytes([2; 32]),
3518                         relative_satoshis: 123456,
3519                         funding_pubkey: pubkey_1,
3520                 };
3521                 let encoded_value = splice.encode();
3522                 assert_eq!(encoded_value.as_hex().to_string(), "02020202020202020202020202020202020202020202020202020202020202026fe28c0ab6f1b372c1a6a246ae63f74f931e8365e15a089c68d6190000000000000000000001e240031b84c5567b126440995d3ed5aaba0565d71e1834604819ff9c17f5e9d5dd078f");
3523         }
3524
3525         #[test]
3526         fn encoding_splice_locked() {
3527                 let splice = msgs::SpliceLocked {
3528                         channel_id: ChannelId::from_bytes([2; 32]),
3529                 };
3530                 let encoded_value = splice.encode();
3531                 assert_eq!(encoded_value.as_hex().to_string(), "0202020202020202020202020202020202020202020202020202020202020202");
3532         }
3533
3534         #[test]
3535         fn encoding_tx_add_input() {
3536                 let tx_add_input = msgs::TxAddInput {
3537                         channel_id: ChannelId::from_bytes([2; 32]),
3538                         serial_id: 4886718345,
3539                         prevtx: TransactionU16LenLimited::new(Transaction {
3540                                 version: 2,
3541                                 lock_time: LockTime::ZERO,
3542                                 input: vec![TxIn {
3543                                         previous_output: OutPoint { txid: Txid::from_str("305bab643ee297b8b6b76b320792c8223d55082122cb606bf89382146ced9c77").unwrap(), index: 2 }.into_bitcoin_outpoint(),
3544                                         script_sig: ScriptBuf::new(),
3545                                         sequence: Sequence(0xfffffffd),
3546                                         witness: Witness::from_slice(&vec![
3547                                                 <Vec<u8>>::from_hex("304402206af85b7dd67450ad12c979302fac49dfacbc6a8620f49c5da2b5721cf9565ca502207002b32fed9ce1bf095f57aeb10c36928ac60b12e723d97d2964a54640ceefa701").unwrap(),
3548                                                 <Vec<u8>>::from_hex("0301ab7dc16488303549bfcdd80f6ae5ee4c20bf97ab5410bbd6b1bfa85dcd6944").unwrap()]),
3549                                 }],
3550                                 output: vec![
3551                                         TxOut {
3552                                                 value: 12704566,
3553                                                 script_pubkey: Address::from_str("bc1qzlffunw52jav8vwdu5x3jfk6sr8u22rmq3xzw2").unwrap().payload.script_pubkey(),
3554                                         },
3555                                         TxOut {
3556                                                 value: 245148,
3557                                                 script_pubkey: Address::from_str("bc1qxmk834g5marzm227dgqvynd23y2nvt2ztwcw2z").unwrap().payload.script_pubkey(),
3558                                         },
3559                                 ],
3560                         }).unwrap(),
3561                         prevtx_out: 305419896,
3562                         sequence: 305419896,
3563                 };
3564                 let encoded_value = tx_add_input.encode();
3565                 let target_value = <Vec<u8>>::from_hex("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").unwrap();
3566                 assert_eq!(encoded_value, target_value);
3567         }
3568
3569         #[test]
3570         fn encoding_tx_add_output() {
3571                 let tx_add_output = msgs::TxAddOutput {
3572                         channel_id: ChannelId::from_bytes([2; 32]),
3573                         serial_id: 4886718345,
3574                         sats: 4886718345,
3575                         script: Address::from_str("bc1qxmk834g5marzm227dgqvynd23y2nvt2ztwcw2z").unwrap().payload.script_pubkey(),
3576                 };
3577                 let encoded_value = tx_add_output.encode();
3578                 let target_value = <Vec<u8>>::from_hex("0202020202020202020202020202020202020202020202020202020202020202000000012345678900000001234567890016001436ec78d514df462da95e6a00c24daa8915362d42").unwrap();
3579                 assert_eq!(encoded_value, target_value);
3580         }
3581
3582         #[test]
3583         fn encoding_tx_remove_input() {
3584                 let tx_remove_input = msgs::TxRemoveInput {
3585                         channel_id: ChannelId::from_bytes([2; 32]),
3586                         serial_id: 4886718345,
3587                 };
3588                 let encoded_value = tx_remove_input.encode();
3589                 let target_value = <Vec<u8>>::from_hex("02020202020202020202020202020202020202020202020202020202020202020000000123456789").unwrap();
3590                 assert_eq!(encoded_value, target_value);
3591         }
3592
3593         #[test]
3594         fn encoding_tx_remove_output() {
3595                 let tx_remove_output = msgs::TxRemoveOutput {
3596                         channel_id: ChannelId::from_bytes([2; 32]),
3597                         serial_id: 4886718345,
3598                 };
3599                 let encoded_value = tx_remove_output.encode();
3600                 let target_value = <Vec<u8>>::from_hex("02020202020202020202020202020202020202020202020202020202020202020000000123456789").unwrap();
3601                 assert_eq!(encoded_value, target_value);
3602         }
3603
3604         #[test]
3605         fn encoding_tx_complete() {
3606                 let tx_complete = msgs::TxComplete {
3607                         channel_id: ChannelId::from_bytes([2; 32]),
3608                 };
3609                 let encoded_value = tx_complete.encode();
3610                 let target_value = <Vec<u8>>::from_hex("0202020202020202020202020202020202020202020202020202020202020202").unwrap();
3611                 assert_eq!(encoded_value, target_value);
3612         }
3613
3614         #[test]
3615         fn encoding_tx_signatures() {
3616                 let tx_signatures = msgs::TxSignatures {
3617                         channel_id: ChannelId::from_bytes([2; 32]),
3618                         tx_hash: Txid::from_str("c2d4449afa8d26140898dd54d3390b057ba2a5afcf03ba29d7dc0d8b9ffe966e").unwrap(),
3619                         witnesses: vec![
3620                                 Witness::from_slice(&vec![
3621                                         <Vec<u8>>::from_hex("304402206af85b7dd67450ad12c979302fac49dfacbc6a8620f49c5da2b5721cf9565ca502207002b32fed9ce1bf095f57aeb10c36928ac60b12e723d97d2964a54640ceefa701").unwrap(),
3622                                         <Vec<u8>>::from_hex("0301ab7dc16488303549bfcdd80f6ae5ee4c20bf97ab5410bbd6b1bfa85dcd6944").unwrap()]),
3623                                 Witness::from_slice(&vec![
3624                                         <Vec<u8>>::from_hex("3045022100ee00dbf4a862463e837d7c08509de814d620e4d9830fa84818713e0fa358f145022021c3c7060c4d53fe84fd165d60208451108a778c13b92ca4c6bad439236126cc01").unwrap(),
3625                                         <Vec<u8>>::from_hex("028fbbf0b16f5ba5bcb5dd37cd4047ce6f726a21c06682f9ec2f52b057de1dbdb5").unwrap()]),
3626                         ],
3627                 };
3628                 let encoded_value = tx_signatures.encode();
3629                 let mut target_value = <Vec<u8>>::from_hex("0202020202020202020202020202020202020202020202020202020202020202").unwrap(); // channel_id
3630                 target_value.append(&mut <Vec<u8>>::from_hex("6e96fe9f8b0ddcd729ba03cfafa5a27b050b39d354dd980814268dfa9a44d4c2").unwrap()); // tx_hash (sha256) (big endian byte order)
3631                 target_value.append(&mut <Vec<u8>>::from_hex("0002").unwrap()); // num_witnesses (u16)
3632                 // Witness 1
3633                 target_value.append(&mut <Vec<u8>>::from_hex("006b").unwrap()); // len of witness_data
3634                 target_value.append(&mut <Vec<u8>>::from_hex("02").unwrap()); // num_witness_elements (VarInt)
3635                 target_value.append(&mut <Vec<u8>>::from_hex("47").unwrap()); // len of witness element data (VarInt)
3636                 target_value.append(&mut <Vec<u8>>::from_hex("304402206af85b7dd67450ad12c979302fac49dfacbc6a8620f49c5da2b5721cf9565ca502207002b32fed9ce1bf095f57aeb10c36928ac60b12e723d97d2964a54640ceefa701").unwrap());
3637                 target_value.append(&mut <Vec<u8>>::from_hex("21").unwrap()); // len of witness element data (VarInt)
3638                 target_value.append(&mut <Vec<u8>>::from_hex("0301ab7dc16488303549bfcdd80f6ae5ee4c20bf97ab5410bbd6b1bfa85dcd6944").unwrap());
3639                 // Witness 2
3640                 target_value.append(&mut <Vec<u8>>::from_hex("006c").unwrap()); // len of witness_data
3641                 target_value.append(&mut <Vec<u8>>::from_hex("02").unwrap()); // num_witness_elements (VarInt)
3642                 target_value.append(&mut <Vec<u8>>::from_hex("48").unwrap()); // len of witness element data (VarInt)
3643                 target_value.append(&mut <Vec<u8>>::from_hex("3045022100ee00dbf4a862463e837d7c08509de814d620e4d9830fa84818713e0fa358f145022021c3c7060c4d53fe84fd165d60208451108a778c13b92ca4c6bad439236126cc01").unwrap());
3644                 target_value.append(&mut <Vec<u8>>::from_hex("21").unwrap()); // len of witness element data (VarInt)
3645                 target_value.append(&mut <Vec<u8>>::from_hex("028fbbf0b16f5ba5bcb5dd37cd4047ce6f726a21c06682f9ec2f52b057de1dbdb5").unwrap());
3646                 assert_eq!(encoded_value, target_value);
3647         }
3648
3649         fn do_encoding_tx_init_rbf(funding_value_with_hex_target: Option<(i64, &str)>) {
3650                 let tx_init_rbf = msgs::TxInitRbf {
3651                         channel_id: ChannelId::from_bytes([2; 32]),
3652                         locktime: 305419896,
3653                         feerate_sat_per_1000_weight: 20190119,
3654                         funding_output_contribution: if let Some((value, _)) = funding_value_with_hex_target { Some(value) } else { None },
3655                 };
3656                 let encoded_value = tx_init_rbf.encode();
3657                 let mut target_value = <Vec<u8>>::from_hex("0202020202020202020202020202020202020202020202020202020202020202").unwrap(); // channel_id
3658                 target_value.append(&mut <Vec<u8>>::from_hex("12345678").unwrap()); // locktime
3659                 target_value.append(&mut <Vec<u8>>::from_hex("013413a7").unwrap()); // feerate_sat_per_1000_weight
3660                 if let Some((_, target)) = funding_value_with_hex_target {
3661                         target_value.push(0x00); // Type
3662                         target_value.push(target.len() as u8 / 2); // Length
3663                         target_value.append(&mut <Vec<u8>>::from_hex(target).unwrap()); // Value (i64)
3664                 }
3665                 assert_eq!(encoded_value, target_value);
3666         }
3667
3668         #[test]
3669         fn encoding_tx_init_rbf() {
3670                 do_encoding_tx_init_rbf(Some((1311768467284833366, "1234567890123456")));
3671                 do_encoding_tx_init_rbf(Some((13117684672, "000000030DDFFBC0")));
3672                 do_encoding_tx_init_rbf(None);
3673         }
3674
3675         fn do_encoding_tx_ack_rbf(funding_value_with_hex_target: Option<(i64, &str)>) {
3676                 let tx_ack_rbf = msgs::TxAckRbf {
3677                         channel_id: ChannelId::from_bytes([2; 32]),
3678                         funding_output_contribution: if let Some((value, _)) = funding_value_with_hex_target { Some(value) } else { None },
3679                 };
3680                 let encoded_value = tx_ack_rbf.encode();
3681                 let mut target_value = <Vec<u8>>::from_hex("0202020202020202020202020202020202020202020202020202020202020202").unwrap();
3682                 if let Some((_, target)) = funding_value_with_hex_target {
3683                         target_value.push(0x00); // Type
3684                         target_value.push(target.len() as u8 / 2); // Length
3685                         target_value.append(&mut <Vec<u8>>::from_hex(target).unwrap()); // Value (i64)
3686                 }
3687                 assert_eq!(encoded_value, target_value);
3688         }
3689
3690         #[test]
3691         fn encoding_tx_ack_rbf() {
3692                 do_encoding_tx_ack_rbf(Some((1311768467284833366, "1234567890123456")));
3693                 do_encoding_tx_ack_rbf(Some((13117684672, "000000030DDFFBC0")));
3694                 do_encoding_tx_ack_rbf(None);
3695         }
3696
3697         #[test]
3698         fn encoding_tx_abort() {
3699                 let tx_abort = msgs::TxAbort {
3700                         channel_id: ChannelId::from_bytes([2; 32]),
3701                         data: <Vec<u8>>::from_hex("54686520717569636B2062726F776E20666F78206A756D7073206F76657220746865206C617A7920646F672E").unwrap(),
3702                 };
3703                 let encoded_value = tx_abort.encode();
3704                 let target_value = <Vec<u8>>::from_hex("0202020202020202020202020202020202020202020202020202020202020202002C54686520717569636B2062726F776E20666F78206A756D7073206F76657220746865206C617A7920646F672E").unwrap();
3705                 assert_eq!(encoded_value, target_value);
3706         }
3707
3708         fn do_encoding_shutdown(script_type: u8) {
3709                 let secp_ctx = Secp256k1::new();
3710                 let (_, pubkey_1) = get_keys_from!("0101010101010101010101010101010101010101010101010101010101010101", secp_ctx);
3711                 let script = Builder::new().push_opcode(opcodes::OP_TRUE).into_script();
3712                 let shutdown = msgs::Shutdown {
3713                         channel_id: ChannelId::from_bytes([2; 32]),
3714                         scriptpubkey:
3715                                 if script_type == 1 { Address::p2pkh(&::bitcoin::PublicKey{compressed: true, inner: pubkey_1}, Network::Testnet).script_pubkey() }
3716                                 else if script_type == 2 { Address::p2sh(&script, Network::Testnet).unwrap().script_pubkey() }
3717                                 else if script_type == 3 { Address::p2wpkh(&::bitcoin::PublicKey{compressed: true, inner: pubkey_1}, Network::Testnet).unwrap().script_pubkey() }
3718                                 else { Address::p2wsh(&script, Network::Testnet).script_pubkey() },
3719                 };
3720                 let encoded_value = shutdown.encode();
3721                 let mut target_value = <Vec<u8>>::from_hex("0202020202020202020202020202020202020202020202020202020202020202").unwrap();
3722                 if script_type == 1 {
3723                         target_value.append(&mut <Vec<u8>>::from_hex("001976a91479b000887626b294a914501a4cd226b58b23598388ac").unwrap());
3724                 } else if script_type == 2 {
3725                         target_value.append(&mut <Vec<u8>>::from_hex("0017a914da1745e9b549bd0bfa1a569971c77eba30cd5a4b87").unwrap());
3726                 } else if script_type == 3 {
3727                         target_value.append(&mut <Vec<u8>>::from_hex("0016001479b000887626b294a914501a4cd226b58b235983").unwrap());
3728                 } else if script_type == 4 {
3729                         target_value.append(&mut <Vec<u8>>::from_hex("002200204ae81572f06e1b88fd5ced7a1a000945432e83e1551e6f721ee9c00b8cc33260").unwrap());
3730                 }
3731                 assert_eq!(encoded_value, target_value);
3732         }
3733
3734         #[test]
3735         fn encoding_shutdown() {
3736                 do_encoding_shutdown(1);
3737                 do_encoding_shutdown(2);
3738                 do_encoding_shutdown(3);
3739                 do_encoding_shutdown(4);
3740         }
3741
3742         #[test]
3743         fn encoding_closing_signed() {
3744                 let secp_ctx = Secp256k1::new();
3745                 let (privkey_1, _) = get_keys_from!("0101010101010101010101010101010101010101010101010101010101010101", secp_ctx);
3746                 let sig_1 = get_sig_on!(privkey_1, secp_ctx, String::from("01010101010101010101010101010101"));
3747                 let closing_signed = msgs::ClosingSigned {
3748                         channel_id: ChannelId::from_bytes([2; 32]),
3749                         fee_satoshis: 2316138423780173,
3750                         signature: sig_1,
3751                         fee_range: None,
3752                 };
3753                 let encoded_value = closing_signed.encode();
3754                 let target_value = <Vec<u8>>::from_hex("020202020202020202020202020202020202020202020202020202020202020200083a840000034dd977cb9b53d93a6ff64bb5f1e158b4094b66e798fb12911168a3ccdf80a83096340a6a95da0ae8d9f776528eecdbb747eb6b545495a4319ed5378e35b21e073a").unwrap();
3755                 assert_eq!(encoded_value, target_value);
3756                 assert_eq!(msgs::ClosingSigned::read(&mut Cursor::new(&target_value)).unwrap(), closing_signed);
3757
3758                 let closing_signed_with_range = msgs::ClosingSigned {
3759                         channel_id: ChannelId::from_bytes([2; 32]),
3760                         fee_satoshis: 2316138423780173,
3761                         signature: sig_1,
3762                         fee_range: Some(msgs::ClosingSignedFeeRange {
3763                                 min_fee_satoshis: 0xdeadbeef,
3764                                 max_fee_satoshis: 0x1badcafe01234567,
3765                         }),
3766                 };
3767                 let encoded_value_with_range = closing_signed_with_range.encode();
3768                 let target_value_with_range = <Vec<u8>>::from_hex("020202020202020202020202020202020202020202020202020202020202020200083a840000034dd977cb9b53d93a6ff64bb5f1e158b4094b66e798fb12911168a3ccdf80a83096340a6a95da0ae8d9f776528eecdbb747eb6b545495a4319ed5378e35b21e073a011000000000deadbeef1badcafe01234567").unwrap();
3769                 assert_eq!(encoded_value_with_range, target_value_with_range);
3770                 assert_eq!(msgs::ClosingSigned::read(&mut Cursor::new(&target_value_with_range)).unwrap(),
3771                         closing_signed_with_range);
3772         }
3773
3774         #[test]
3775         fn encoding_update_add_htlc() {
3776                 let secp_ctx = Secp256k1::new();
3777                 let (_, pubkey_1) = get_keys_from!("0101010101010101010101010101010101010101010101010101010101010101", secp_ctx);
3778                 let onion_routing_packet = msgs::OnionPacket {
3779                         version: 255,
3780                         public_key: Ok(pubkey_1),
3781                         hop_data: [1; 20*65],
3782                         hmac: [2; 32]
3783                 };
3784                 let update_add_htlc = msgs::UpdateAddHTLC {
3785                         channel_id: ChannelId::from_bytes([2; 32]),
3786                         htlc_id: 2316138423780173,
3787                         amount_msat: 3608586615801332854,
3788                         payment_hash: PaymentHash([1; 32]),
3789                         cltv_expiry: 821716,
3790                         onion_routing_packet,
3791                         skimmed_fee_msat: None,
3792                         blinding_point: None,
3793                 };
3794                 let encoded_value = update_add_htlc.encode();
3795                 let target_value = <Vec<u8>>::from_hex("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").unwrap();
3796                 assert_eq!(encoded_value, target_value);
3797         }
3798
3799         #[test]
3800         fn encoding_update_fulfill_htlc() {
3801                 let update_fulfill_htlc = msgs::UpdateFulfillHTLC {
3802                         channel_id: ChannelId::from_bytes([2; 32]),
3803                         htlc_id: 2316138423780173,
3804                         payment_preimage: PaymentPreimage([1; 32]),
3805                 };
3806                 let encoded_value = update_fulfill_htlc.encode();
3807                 let target_value = <Vec<u8>>::from_hex("020202020202020202020202020202020202020202020202020202020202020200083a840000034d0101010101010101010101010101010101010101010101010101010101010101").unwrap();
3808                 assert_eq!(encoded_value, target_value);
3809         }
3810
3811         #[test]
3812         fn encoding_update_fail_htlc() {
3813                 let reason = OnionErrorPacket {
3814                         data: [1; 32].to_vec(),
3815                 };
3816                 let update_fail_htlc = msgs::UpdateFailHTLC {
3817                         channel_id: ChannelId::from_bytes([2; 32]),
3818                         htlc_id: 2316138423780173,
3819                         reason
3820                 };
3821                 let encoded_value = update_fail_htlc.encode();
3822                 let target_value = <Vec<u8>>::from_hex("020202020202020202020202020202020202020202020202020202020202020200083a840000034d00200101010101010101010101010101010101010101010101010101010101010101").unwrap();
3823                 assert_eq!(encoded_value, target_value);
3824         }
3825
3826         #[test]
3827         fn encoding_update_fail_malformed_htlc() {
3828                 let update_fail_malformed_htlc = msgs::UpdateFailMalformedHTLC {
3829                         channel_id: ChannelId::from_bytes([2; 32]),
3830                         htlc_id: 2316138423780173,
3831                         sha256_of_onion: [1; 32],
3832                         failure_code: 255
3833                 };
3834                 let encoded_value = update_fail_malformed_htlc.encode();
3835                 let target_value = <Vec<u8>>::from_hex("020202020202020202020202020202020202020202020202020202020202020200083a840000034d010101010101010101010101010101010101010101010101010101010101010100ff").unwrap();
3836                 assert_eq!(encoded_value, target_value);
3837         }
3838
3839         fn do_encoding_commitment_signed(htlcs: bool) {
3840                 let secp_ctx = Secp256k1::new();
3841                 let (privkey_1, _) = get_keys_from!("0101010101010101010101010101010101010101010101010101010101010101", secp_ctx);
3842                 let (privkey_2, _) = get_keys_from!("0202020202020202020202020202020202020202020202020202020202020202", secp_ctx);
3843                 let (privkey_3, _) = get_keys_from!("0303030303030303030303030303030303030303030303030303030303030303", secp_ctx);
3844                 let (privkey_4, _) = get_keys_from!("0404040404040404040404040404040404040404040404040404040404040404", secp_ctx);
3845                 let sig_1 = get_sig_on!(privkey_1, secp_ctx, String::from("01010101010101010101010101010101"));
3846                 let sig_2 = get_sig_on!(privkey_2, secp_ctx, String::from("01010101010101010101010101010101"));
3847                 let sig_3 = get_sig_on!(privkey_3, secp_ctx, String::from("01010101010101010101010101010101"));
3848                 let sig_4 = get_sig_on!(privkey_4, secp_ctx, String::from("01010101010101010101010101010101"));
3849                 let commitment_signed = msgs::CommitmentSigned {
3850                         channel_id: ChannelId::from_bytes([2; 32]),
3851                         signature: sig_1,
3852                         htlc_signatures: if htlcs { vec![sig_2, sig_3, sig_4] } else { Vec::new() },
3853                         #[cfg(taproot)]
3854                         partial_signature_with_nonce: None,
3855                 };
3856                 let encoded_value = commitment_signed.encode();
3857                 let mut target_value = <Vec<u8>>::from_hex("0202020202020202020202020202020202020202020202020202020202020202d977cb9b53d93a6ff64bb5f1e158b4094b66e798fb12911168a3ccdf80a83096340a6a95da0ae8d9f776528eecdbb747eb6b545495a4319ed5378e35b21e073a").unwrap();
3858                 if htlcs {
3859                         target_value.append(&mut <Vec<u8>>::from_hex("00031735b6a427e80d5fe7cd90a2f4ee08dc9c27cda7c35a4172e5d85b12c49d4232537e98f9b1f3c5e6989a8b9644e90e8918127680dbd0d4043510840fc0f1e11a216c280b5395a2546e7e4b2663e04f811622f15a4f91e83aa2e92ba2a573c139142c54ae63072a1ec1ee7dc0c04bde5c847806172aa05c92c22ae8e308d1d2692b12cc195ce0a2d1bda6a88befa19fa07f51caa75ce83837f28965600b8aacab0855ffb0e741ec5f7c41421e9829a9d48611c8c831f71be5ea73e66594977ffd").unwrap());
3860                 } else {
3861                         target_value.append(&mut <Vec<u8>>::from_hex("0000").unwrap());
3862                 }
3863                 assert_eq!(encoded_value, target_value);
3864         }
3865
3866         #[test]
3867         fn encoding_commitment_signed() {
3868                 do_encoding_commitment_signed(true);
3869                 do_encoding_commitment_signed(false);
3870         }
3871
3872         #[test]
3873         fn encoding_revoke_and_ack() {
3874                 let secp_ctx = Secp256k1::new();
3875                 let (_, pubkey_1) = get_keys_from!("0101010101010101010101010101010101010101010101010101010101010101", secp_ctx);
3876                 let raa = msgs::RevokeAndACK {
3877                         channel_id: ChannelId::from_bytes([2; 32]),
3878                         per_commitment_secret: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
3879                         next_per_commitment_point: pubkey_1,
3880                         #[cfg(taproot)]
3881                         next_local_nonce: None,
3882                 };
3883                 let encoded_value = raa.encode();
3884                 let target_value = <Vec<u8>>::from_hex("02020202020202020202020202020202020202020202020202020202020202020101010101010101010101010101010101010101010101010101010101010101031b84c5567b126440995d3ed5aaba0565d71e1834604819ff9c17f5e9d5dd078f").unwrap();
3885                 assert_eq!(encoded_value, target_value);
3886         }
3887
3888         #[test]
3889         fn encoding_update_fee() {
3890                 let update_fee = msgs::UpdateFee {
3891                         channel_id: ChannelId::from_bytes([2; 32]),
3892                         feerate_per_kw: 20190119,
3893                 };
3894                 let encoded_value = update_fee.encode();
3895                 let target_value = <Vec<u8>>::from_hex("0202020202020202020202020202020202020202020202020202020202020202013413a7").unwrap();
3896                 assert_eq!(encoded_value, target_value);
3897         }
3898
3899         #[test]
3900         fn encoding_init() {
3901                 let mainnet_hash = ChainHash::using_genesis_block(Network::Bitcoin);
3902                 assert_eq!(msgs::Init {
3903                         features: InitFeatures::from_le_bytes(vec![0xFF, 0xFF, 0xFF]),
3904                         networks: Some(vec![mainnet_hash]),
3905                         remote_network_address: None,
3906                 }.encode(), <Vec<u8>>::from_hex("00023fff0003ffffff01206fe28c0ab6f1b372c1a6a246ae63f74f931e8365e15a089c68d6190000000000").unwrap());
3907                 assert_eq!(msgs::Init {
3908                         features: InitFeatures::from_le_bytes(vec![0xFF]),
3909                         networks: None,
3910                         remote_network_address: None,
3911                 }.encode(), <Vec<u8>>::from_hex("0001ff0001ff").unwrap());
3912                 assert_eq!(msgs::Init {
3913                         features: InitFeatures::from_le_bytes(vec![]),
3914                         networks: Some(vec![mainnet_hash]),
3915                         remote_network_address: None,
3916                 }.encode(), <Vec<u8>>::from_hex("0000000001206fe28c0ab6f1b372c1a6a246ae63f74f931e8365e15a089c68d6190000000000").unwrap());
3917                 assert_eq!(msgs::Init {
3918                         features: InitFeatures::from_le_bytes(vec![]),
3919                         networks: Some(vec![ChainHash::from(&[1; 32]), ChainHash::from(&[2; 32])]),
3920                         remote_network_address: None,
3921                 }.encode(), <Vec<u8>>::from_hex("00000000014001010101010101010101010101010101010101010101010101010101010101010202020202020202020202020202020202020202020202020202020202020202").unwrap());
3922                 let init_msg = msgs::Init { features: InitFeatures::from_le_bytes(vec![]),
3923                         networks: Some(vec![mainnet_hash]),
3924                         remote_network_address: Some(SocketAddress::TcpIpV4 {
3925                                 addr: [127, 0, 0, 1],
3926                                 port: 1000,
3927                         }),
3928                 };
3929                 let encoded_value = init_msg.encode();
3930                 let target_value = <Vec<u8>>::from_hex("0000000001206fe28c0ab6f1b372c1a6a246ae63f74f931e8365e15a089c68d61900000000000307017f00000103e8").unwrap();
3931                 assert_eq!(encoded_value, target_value);
3932                 assert_eq!(msgs::Init::read(&mut Cursor::new(&target_value)).unwrap(), init_msg);
3933         }
3934
3935         #[test]
3936         fn encoding_error() {
3937                 let error = msgs::ErrorMessage {
3938                         channel_id: ChannelId::from_bytes([2; 32]),
3939                         data: String::from("rust-lightning"),
3940                 };
3941                 let encoded_value = error.encode();
3942                 let target_value = <Vec<u8>>::from_hex("0202020202020202020202020202020202020202020202020202020202020202000e727573742d6c696768746e696e67").unwrap();
3943                 assert_eq!(encoded_value, target_value);
3944         }
3945
3946         #[test]
3947         fn encoding_warning() {
3948                 let error = msgs::WarningMessage {
3949                         channel_id: ChannelId::from_bytes([2; 32]),
3950                         data: String::from("rust-lightning"),
3951                 };
3952                 let encoded_value = error.encode();
3953                 let target_value = <Vec<u8>>::from_hex("0202020202020202020202020202020202020202020202020202020202020202000e727573742d6c696768746e696e67").unwrap();
3954                 assert_eq!(encoded_value, target_value);
3955         }
3956
3957         #[test]
3958         fn encoding_ping() {
3959                 let ping = msgs::Ping {
3960                         ponglen: 64,
3961                         byteslen: 64
3962                 };
3963                 let encoded_value = ping.encode();
3964                 let target_value = <Vec<u8>>::from_hex("0040004000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000").unwrap();
3965                 assert_eq!(encoded_value, target_value);
3966         }
3967
3968         #[test]
3969         fn encoding_pong() {
3970                 let pong = msgs::Pong {
3971                         byteslen: 64
3972                 };
3973                 let encoded_value = pong.encode();
3974                 let target_value = <Vec<u8>>::from_hex("004000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000").unwrap();
3975                 assert_eq!(encoded_value, target_value);
3976         }
3977
3978         #[test]
3979         fn encoding_nonfinal_onion_hop_data() {
3980                 let outbound_msg = msgs::OutboundOnionPayload::Forward {
3981                         short_channel_id: 0xdeadbeef1bad1dea,
3982                         amt_to_forward: 0x0badf00d01020304,
3983                         outgoing_cltv_value: 0xffffffff,
3984                 };
3985                 let encoded_value = outbound_msg.encode();
3986                 let target_value = <Vec<u8>>::from_hex("1a02080badf00d010203040404ffffffff0608deadbeef1bad1dea").unwrap();
3987                 assert_eq!(encoded_value, target_value);
3988
3989                 let node_signer = test_utils::TestKeysInterface::new(&[42; 32], Network::Testnet);
3990                 let inbound_msg = ReadableArgs::read(&mut Cursor::new(&target_value[..]), &&node_signer).unwrap();
3991                 if let msgs::InboundOnionPayload::Forward {
3992                         short_channel_id, amt_to_forward, outgoing_cltv_value
3993                 } = inbound_msg {
3994                         assert_eq!(short_channel_id, 0xdeadbeef1bad1dea);
3995                         assert_eq!(amt_to_forward, 0x0badf00d01020304);
3996                         assert_eq!(outgoing_cltv_value, 0xffffffff);
3997                 } else { panic!(); }
3998         }
3999
4000         #[test]
4001         fn encoding_final_onion_hop_data() {
4002                 let outbound_msg = msgs::OutboundOnionPayload::Receive {
4003                         payment_data: None,
4004                         payment_metadata: None,
4005                         keysend_preimage: None,
4006                         amt_msat: 0x0badf00d01020304,
4007                         outgoing_cltv_value: 0xffffffff,
4008                         custom_tlvs: vec![],
4009                 };
4010                 let encoded_value = outbound_msg.encode();
4011                 let target_value = <Vec<u8>>::from_hex("1002080badf00d010203040404ffffffff").unwrap();
4012                 assert_eq!(encoded_value, target_value);
4013
4014                 let node_signer = test_utils::TestKeysInterface::new(&[42; 32], Network::Testnet);
4015                 let inbound_msg = ReadableArgs::read(&mut Cursor::new(&target_value[..]), &&node_signer).unwrap();
4016                 if let msgs::InboundOnionPayload::Receive {
4017                         payment_data: None, amt_msat, outgoing_cltv_value, ..
4018                 } = inbound_msg {
4019                         assert_eq!(amt_msat, 0x0badf00d01020304);
4020                         assert_eq!(outgoing_cltv_value, 0xffffffff);
4021                 } else { panic!(); }
4022         }
4023
4024         #[test]
4025         fn encoding_final_onion_hop_data_with_secret() {
4026                 let expected_payment_secret = PaymentSecret([0x42u8; 32]);
4027                 let outbound_msg = msgs::OutboundOnionPayload::Receive {
4028                         payment_data: Some(FinalOnionHopData {
4029                                 payment_secret: expected_payment_secret,
4030                                 total_msat: 0x1badca1f
4031                         }),
4032                         payment_metadata: None,
4033                         keysend_preimage: None,
4034                         amt_msat: 0x0badf00d01020304,
4035                         outgoing_cltv_value: 0xffffffff,
4036                         custom_tlvs: vec![],
4037                 };
4038                 let encoded_value = outbound_msg.encode();
4039                 let target_value = <Vec<u8>>::from_hex("3602080badf00d010203040404ffffffff082442424242424242424242424242424242424242424242424242424242424242421badca1f").unwrap();
4040                 assert_eq!(encoded_value, target_value);
4041
4042                 let node_signer = test_utils::TestKeysInterface::new(&[42; 32], Network::Testnet);
4043                 let inbound_msg = ReadableArgs::read(&mut Cursor::new(&target_value[..]), &&node_signer).unwrap();
4044                 if let msgs::InboundOnionPayload::Receive {
4045                         payment_data: Some(FinalOnionHopData {
4046                                 payment_secret,
4047                                 total_msat: 0x1badca1f
4048                         }),
4049                         amt_msat, outgoing_cltv_value,
4050                         payment_metadata: None,
4051                         keysend_preimage: None,
4052                         custom_tlvs,
4053                 } = inbound_msg  {
4054                         assert_eq!(payment_secret, expected_payment_secret);
4055                         assert_eq!(amt_msat, 0x0badf00d01020304);
4056                         assert_eq!(outgoing_cltv_value, 0xffffffff);
4057                         assert_eq!(custom_tlvs, vec![]);
4058                 } else { panic!(); }
4059         }
4060
4061         #[test]
4062         fn encoding_final_onion_hop_data_with_bad_custom_tlvs() {
4063                 // If custom TLVs have type number within the range reserved for protocol, treat them as if
4064                 // they're unknown
4065                 let bad_type_range_tlvs = vec![
4066                         ((1 << 16) - 4, vec![42]),
4067                         ((1 << 16) - 2, vec![42; 32]),
4068                 ];
4069                 let mut msg = msgs::OutboundOnionPayload::Receive {
4070                         payment_data: None,
4071                         payment_metadata: None,
4072                         keysend_preimage: None,
4073                         custom_tlvs: bad_type_range_tlvs,
4074                         amt_msat: 0x0badf00d01020304,
4075                         outgoing_cltv_value: 0xffffffff,
4076                 };
4077                 let encoded_value = msg.encode();
4078                 let node_signer = test_utils::TestKeysInterface::new(&[42; 32], Network::Testnet);
4079                 assert!(msgs::InboundOnionPayload::read(&mut Cursor::new(&encoded_value[..]), &&node_signer).is_err());
4080                 let good_type_range_tlvs = vec![
4081                         ((1 << 16) - 3, vec![42]),
4082                         ((1 << 16) - 1, vec![42; 32]),
4083                 ];
4084                 if let msgs::OutboundOnionPayload::Receive { ref mut custom_tlvs, .. } = msg {
4085                         *custom_tlvs = good_type_range_tlvs.clone();
4086                 }
4087                 let encoded_value = msg.encode();
4088                 let inbound_msg = ReadableArgs::read(&mut Cursor::new(&encoded_value[..]), &&node_signer).unwrap();
4089                 match inbound_msg {
4090                         msgs::InboundOnionPayload::Receive { custom_tlvs, .. } => assert!(custom_tlvs.is_empty()),
4091                         _ => panic!(),
4092                 }
4093         }
4094
4095         #[test]
4096         fn encoding_final_onion_hop_data_with_custom_tlvs() {
4097                 let expected_custom_tlvs = vec![
4098                         (5482373483, vec![0x12, 0x34]),
4099                         (5482373487, vec![0x42u8; 8]),
4100                 ];
4101                 let msg = msgs::OutboundOnionPayload::Receive {
4102                         payment_data: None,
4103                         payment_metadata: None,
4104                         keysend_preimage: None,
4105                         custom_tlvs: expected_custom_tlvs.clone(),
4106                         amt_msat: 0x0badf00d01020304,
4107                         outgoing_cltv_value: 0xffffffff,
4108                 };
4109                 let encoded_value = msg.encode();
4110                 let target_value = <Vec<u8>>::from_hex("2e02080badf00d010203040404ffffffffff0000000146c6616b021234ff0000000146c6616f084242424242424242").unwrap();
4111                 assert_eq!(encoded_value, target_value);
4112                 let node_signer = test_utils::TestKeysInterface::new(&[42; 32], Network::Testnet);
4113                 let inbound_msg: msgs::InboundOnionPayload = ReadableArgs::read(&mut Cursor::new(&target_value[..]), &&node_signer).unwrap();
4114                 if let msgs::InboundOnionPayload::Receive {
4115                         payment_data: None,
4116                         payment_metadata: None,
4117                         keysend_preimage: None,
4118                         custom_tlvs,
4119                         amt_msat,
4120                         outgoing_cltv_value,
4121                         ..
4122                 } = inbound_msg {
4123                         assert_eq!(custom_tlvs, expected_custom_tlvs);
4124                         assert_eq!(amt_msat, 0x0badf00d01020304);
4125                         assert_eq!(outgoing_cltv_value, 0xffffffff);
4126                 } else { panic!(); }
4127         }
4128
4129         #[test]
4130         fn query_channel_range_end_blocknum() {
4131                 let tests: Vec<(u32, u32, u32)> = vec![
4132                         (10000, 1500, 11500),
4133                         (0, 0xffffffff, 0xffffffff),
4134                         (1, 0xffffffff, 0xffffffff),
4135                 ];
4136
4137                 for (first_blocknum, number_of_blocks, expected) in tests.into_iter() {
4138                         let sut = msgs::QueryChannelRange {
4139                                 chain_hash: ChainHash::using_genesis_block(Network::Regtest),
4140                                 first_blocknum,
4141                                 number_of_blocks,
4142                         };
4143                         assert_eq!(sut.end_blocknum(), expected);
4144                 }
4145         }
4146
4147         #[test]
4148         fn encoding_query_channel_range() {
4149                 let mut query_channel_range = msgs::QueryChannelRange {
4150                         chain_hash: ChainHash::using_genesis_block(Network::Regtest),
4151                         first_blocknum: 100000,
4152                         number_of_blocks: 1500,
4153                 };
4154                 let encoded_value = query_channel_range.encode();
4155                 let target_value = <Vec<u8>>::from_hex("06226e46111a0b59caaf126043eb5bbf28c34f3a5e332a1fc7b2b73cf188910f000186a0000005dc").unwrap();
4156                 assert_eq!(encoded_value, target_value);
4157
4158                 query_channel_range = Readable::read(&mut Cursor::new(&target_value[..])).unwrap();
4159                 assert_eq!(query_channel_range.first_blocknum, 100000);
4160                 assert_eq!(query_channel_range.number_of_blocks, 1500);
4161         }
4162
4163         #[test]
4164         fn encoding_reply_channel_range() {
4165                 do_encoding_reply_channel_range(0);
4166                 do_encoding_reply_channel_range(1);
4167         }
4168
4169         fn do_encoding_reply_channel_range(encoding_type: u8) {
4170                 let mut target_value = <Vec<u8>>::from_hex("06226e46111a0b59caaf126043eb5bbf28c34f3a5e332a1fc7b2b73cf188910f000b8a06000005dc01").unwrap();
4171                 let expected_chain_hash = ChainHash::using_genesis_block(Network::Regtest);
4172                 let mut reply_channel_range = msgs::ReplyChannelRange {
4173                         chain_hash: expected_chain_hash,
4174                         first_blocknum: 756230,
4175                         number_of_blocks: 1500,
4176                         sync_complete: true,
4177                         short_channel_ids: vec![0x000000000000008e, 0x0000000000003c69, 0x000000000045a6c4],
4178                 };
4179
4180                 if encoding_type == 0 {
4181                         target_value.append(&mut <Vec<u8>>::from_hex("001900000000000000008e0000000000003c69000000000045a6c4").unwrap());
4182                         let encoded_value = reply_channel_range.encode();
4183                         assert_eq!(encoded_value, target_value);
4184
4185                         reply_channel_range = Readable::read(&mut Cursor::new(&target_value[..])).unwrap();
4186                         assert_eq!(reply_channel_range.chain_hash, expected_chain_hash);
4187                         assert_eq!(reply_channel_range.first_blocknum, 756230);
4188                         assert_eq!(reply_channel_range.number_of_blocks, 1500);
4189                         assert_eq!(reply_channel_range.sync_complete, true);
4190                         assert_eq!(reply_channel_range.short_channel_ids[0], 0x000000000000008e);
4191                         assert_eq!(reply_channel_range.short_channel_ids[1], 0x0000000000003c69);
4192                         assert_eq!(reply_channel_range.short_channel_ids[2], 0x000000000045a6c4);
4193                 } else {
4194                         target_value.append(&mut <Vec<u8>>::from_hex("001601789c636000833e08659309a65878be010010a9023a").unwrap());
4195                         let result: Result<msgs::ReplyChannelRange, msgs::DecodeError> = Readable::read(&mut Cursor::new(&target_value[..]));
4196                         assert!(result.is_err(), "Expected decode failure with unsupported zlib encoding");
4197                 }
4198         }
4199
4200         #[test]
4201         fn encoding_query_short_channel_ids() {
4202                 do_encoding_query_short_channel_ids(0);
4203                 do_encoding_query_short_channel_ids(1);
4204         }
4205
4206         fn do_encoding_query_short_channel_ids(encoding_type: u8) {
4207                 let mut target_value = <Vec<u8>>::from_hex("06226e46111a0b59caaf126043eb5bbf28c34f3a5e332a1fc7b2b73cf188910f").unwrap();
4208                 let expected_chain_hash = ChainHash::using_genesis_block(Network::Regtest);
4209                 let mut query_short_channel_ids = msgs::QueryShortChannelIds {
4210                         chain_hash: expected_chain_hash,
4211                         short_channel_ids: vec![0x0000000000008e, 0x0000000000003c69, 0x000000000045a6c4],
4212                 };
4213
4214                 if encoding_type == 0 {
4215                         target_value.append(&mut <Vec<u8>>::from_hex("001900000000000000008e0000000000003c69000000000045a6c4").unwrap());
4216                         let encoded_value = query_short_channel_ids.encode();
4217                         assert_eq!(encoded_value, target_value);
4218
4219                         query_short_channel_ids = Readable::read(&mut Cursor::new(&target_value[..])).unwrap();
4220                         assert_eq!(query_short_channel_ids.chain_hash, expected_chain_hash);
4221                         assert_eq!(query_short_channel_ids.short_channel_ids[0], 0x000000000000008e);
4222                         assert_eq!(query_short_channel_ids.short_channel_ids[1], 0x0000000000003c69);
4223                         assert_eq!(query_short_channel_ids.short_channel_ids[2], 0x000000000045a6c4);
4224                 } else {
4225                         target_value.append(&mut <Vec<u8>>::from_hex("001601789c636000833e08659309a65878be010010a9023a").unwrap());
4226                         let result: Result<msgs::QueryShortChannelIds, msgs::DecodeError> = Readable::read(&mut Cursor::new(&target_value[..]));
4227                         assert!(result.is_err(), "Expected decode failure with unsupported zlib encoding");
4228                 }
4229         }
4230
4231         #[test]
4232         fn encoding_reply_short_channel_ids_end() {
4233                 let expected_chain_hash = ChainHash::using_genesis_block(Network::Regtest);
4234                 let mut reply_short_channel_ids_end = msgs::ReplyShortChannelIdsEnd {
4235                         chain_hash: expected_chain_hash,
4236                         full_information: true,
4237                 };
4238                 let encoded_value = reply_short_channel_ids_end.encode();
4239                 let target_value = <Vec<u8>>::from_hex("06226e46111a0b59caaf126043eb5bbf28c34f3a5e332a1fc7b2b73cf188910f01").unwrap();
4240                 assert_eq!(encoded_value, target_value);
4241
4242                 reply_short_channel_ids_end = Readable::read(&mut Cursor::new(&target_value[..])).unwrap();
4243                 assert_eq!(reply_short_channel_ids_end.chain_hash, expected_chain_hash);
4244                 assert_eq!(reply_short_channel_ids_end.full_information, true);
4245         }
4246
4247         #[test]
4248         fn encoding_gossip_timestamp_filter(){
4249                 let expected_chain_hash = ChainHash::using_genesis_block(Network::Regtest);
4250                 let mut gossip_timestamp_filter = msgs::GossipTimestampFilter {
4251                         chain_hash: expected_chain_hash,
4252                         first_timestamp: 1590000000,
4253                         timestamp_range: 0xffff_ffff,
4254                 };
4255                 let encoded_value = gossip_timestamp_filter.encode();
4256                 let target_value = <Vec<u8>>::from_hex("06226e46111a0b59caaf126043eb5bbf28c34f3a5e332a1fc7b2b73cf188910f5ec57980ffffffff").unwrap();
4257                 assert_eq!(encoded_value, target_value);
4258
4259                 gossip_timestamp_filter = Readable::read(&mut Cursor::new(&target_value[..])).unwrap();
4260                 assert_eq!(gossip_timestamp_filter.chain_hash, expected_chain_hash);
4261                 assert_eq!(gossip_timestamp_filter.first_timestamp, 1590000000);
4262                 assert_eq!(gossip_timestamp_filter.timestamp_range, 0xffff_ffff);
4263         }
4264
4265         #[test]
4266         fn decode_onion_hop_data_len_as_bigsize() {
4267                 // Tests that we can decode an onion payload that is >253 bytes.
4268                 // Previously, receiving a payload of this size could've caused us to fail to decode a valid
4269                 // payload, because we were decoding the length (a BigSize, big-endian) as a VarInt
4270                 // (little-endian).
4271
4272                 // Encode a test onion payload with a big custom TLV such that it's >253 bytes, forcing the
4273                 // payload length to be encoded over multiple bytes rather than a single u8.
4274                 let big_payload = encode_big_payload().unwrap();
4275                 let mut rd = Cursor::new(&big_payload[..]);
4276
4277                 let node_signer = test_utils::TestKeysInterface::new(&[42; 32], Network::Testnet);
4278                 <msgs::InboundOnionPayload as ReadableArgs<&&test_utils::TestKeysInterface>>
4279                         ::read(&mut rd, &&node_signer).unwrap();
4280         }
4281         // see above test, needs to be a separate method for use of the serialization macros.
4282         fn encode_big_payload() -> Result<Vec<u8>, io::Error> {
4283                 use crate::util::ser::HighZeroBytesDroppedBigSize;
4284                 let payload = msgs::OutboundOnionPayload::Forward {
4285                         short_channel_id: 0xdeadbeef1bad1dea,
4286                         amt_to_forward: 1000,
4287                         outgoing_cltv_value: 0xffffffff,
4288                 };
4289                 let mut encoded_payload = Vec::new();
4290                 let test_bytes = vec![42u8; 1000];
4291                 if let msgs::OutboundOnionPayload::Forward { short_channel_id, amt_to_forward, outgoing_cltv_value } = payload {
4292                         _encode_varint_length_prefixed_tlv!(&mut encoded_payload, {
4293                                 (1, test_bytes, required_vec),
4294                                 (2, HighZeroBytesDroppedBigSize(amt_to_forward), required),
4295                                 (4, HighZeroBytesDroppedBigSize(outgoing_cltv_value), required),
4296                                 (6, short_channel_id, required)
4297                         });
4298                 }
4299                 Ok(encoded_payload)
4300         }
4301
4302         #[test]
4303         #[cfg(feature = "std")]
4304         fn test_socket_address_from_str() {
4305                 let tcpip_v4 = SocketAddress::TcpIpV4 {
4306                         addr: Ipv4Addr::new(127, 0, 0, 1).octets(),
4307                         port: 1234,
4308                 };
4309                 assert_eq!(tcpip_v4, SocketAddress::from_str("127.0.0.1:1234").unwrap());
4310                 assert_eq!(tcpip_v4, SocketAddress::from_str(&tcpip_v4.to_string()).unwrap());
4311
4312                 let tcpip_v6 = SocketAddress::TcpIpV6 {
4313                         addr: Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 1).octets(),
4314                         port: 1234,
4315                 };
4316                 assert_eq!(tcpip_v6, SocketAddress::from_str("[0:0:0:0:0:0:0:1]:1234").unwrap());
4317                 assert_eq!(tcpip_v6, SocketAddress::from_str(&tcpip_v6.to_string()).unwrap());
4318
4319                 let hostname = SocketAddress::Hostname {
4320                                 hostname: Hostname::try_from("lightning-node.mydomain.com".to_string()).unwrap(),
4321                                 port: 1234,
4322                 };
4323                 assert_eq!(hostname, SocketAddress::from_str("lightning-node.mydomain.com:1234").unwrap());
4324                 assert_eq!(hostname, SocketAddress::from_str(&hostname.to_string()).unwrap());
4325
4326                 let onion_v2 = SocketAddress::OnionV2 ([40, 4, 64, 185, 202, 19, 162, 75, 90, 200, 38, 7],);
4327                 assert_eq!("OnionV2([40, 4, 64, 185, 202, 19, 162, 75, 90, 200, 38, 7])", &onion_v2.to_string());
4328                 assert_eq!(Err(SocketAddressParseError::InvalidOnionV3), SocketAddress::from_str("FACEBOOKCOREWWWI.onion:9735"));
4329
4330                 let onion_v3 = SocketAddress::OnionV3 {
4331                         ed25519_pubkey: [37, 24, 75, 5, 25, 73, 117, 194, 139, 102, 182, 107, 4, 105, 247, 246, 85,
4332                         111, 177, 172, 49, 137, 167, 155, 64, 221, 163, 47, 31, 33, 71, 3],
4333                         checksum: 48326,
4334                         version: 121,
4335                         port: 1234
4336                 };
4337                 assert_eq!(onion_v3, SocketAddress::from_str("pg6mmjiyjmcrsslvykfwnntlaru7p5svn6y2ymmju6nubxndf4pscryd.onion:1234").unwrap());
4338                 assert_eq!(onion_v3, SocketAddress::from_str(&onion_v3.to_string()).unwrap());
4339
4340                 assert_eq!(Err(SocketAddressParseError::InvalidOnionV3), SocketAddress::from_str("pg6mmjiyjmcrsslvykfwnntlaru7p5svn6.onion:1234"));
4341                 assert_eq!(Err(SocketAddressParseError::InvalidInput), SocketAddress::from_str("127.0.0.1@1234"));
4342                 assert_eq!(Err(SocketAddressParseError::InvalidInput), "".parse::<SocketAddress>());
4343                 assert!(SocketAddress::from_str("pg6mmjiyjmcrsslvykfwnntlaru7p5svn6y2ymmju6nubxndf4pscryd.onion.onion:9735:94").is_err());
4344                 assert!(SocketAddress::from_str("wrong$%#.com:1234").is_err());
4345                 assert_eq!(Err(SocketAddressParseError::InvalidPort), SocketAddress::from_str("example.com:wrong"));
4346                 assert!("localhost".parse::<SocketAddress>().is_err());
4347                 assert!("localhost:invalid-port".parse::<SocketAddress>().is_err());
4348                 assert!( "invalid-onion-v3-hostname.onion:8080".parse::<SocketAddress>().is_err());
4349                 assert!("b32.example.onion:invalid-port".parse::<SocketAddress>().is_err());
4350                 assert!("invalid-address".parse::<SocketAddress>().is_err());
4351                 assert!(SocketAddress::from_str("pg6mmjiyjmcrsslvykfwnntlaru7p5svn6y2ymmju6nubxndf4pscryd.onion.onion:1234").is_err());
4352         }
4353
4354         #[test]
4355         #[cfg(feature = "std")]
4356         fn test_socket_address_to_socket_addrs() {
4357                 assert_eq!(SocketAddress::TcpIpV4 {addr:[0u8; 4], port: 1337,}.to_socket_addrs().unwrap().next().unwrap(),
4358                                    SocketAddr::V4(SocketAddrV4::new(Ipv4Addr::new(0,0,0,0), 1337)));
4359                 assert_eq!(SocketAddress::TcpIpV6 {addr:[0u8; 16], port: 1337,}.to_socket_addrs().unwrap().next().unwrap(),
4360                                    SocketAddr::V6(SocketAddrV6::new(Ipv6Addr::from([0u8; 16]), 1337, 0, 0)));
4361                 assert_eq!(SocketAddress::Hostname { hostname: Hostname::try_from("0.0.0.0".to_string()).unwrap(), port: 0 }
4362                                            .to_socket_addrs().unwrap().next().unwrap(), SocketAddr::V4(SocketAddrV4::new(Ipv4Addr::from([0u8; 4]),0)));
4363                 assert!(SocketAddress::OnionV2([0u8; 12]).to_socket_addrs().is_err());
4364                 assert!(SocketAddress::OnionV3{ ed25519_pubkey: [37, 24, 75, 5, 25, 73, 117, 194, 139, 102,
4365                         182, 107, 4, 105, 247, 246, 85, 111, 177, 172, 49, 137, 167, 155, 64, 221, 163, 47, 31,
4366                         33, 71, 3],
4367                         checksum: 48326,
4368                         version: 121,
4369                         port: 1234 }.to_socket_addrs().is_err());
4370         }
4371 }