1 // This file is Copyright its original authors, visible in version control
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
10 use bitcoin::blockdata::script::{Script,Builder};
11 use bitcoin::blockdata::transaction::{Transaction, EcdsaSighashType};
12 use bitcoin::util::sighash;
13 use bitcoin::consensus::encode;
15 use bitcoin::hashes::Hash;
16 use bitcoin::hashes::sha256::Hash as Sha256;
17 use bitcoin::hashes::sha256d::Hash as Sha256d;
18 use bitcoin::hash_types::{Txid, BlockHash};
20 use bitcoin::secp256k1::constants::PUBLIC_KEY_SIZE;
21 use bitcoin::secp256k1::{PublicKey,SecretKey};
22 use bitcoin::secp256k1::{Secp256k1,ecdsa::Signature};
23 use bitcoin::secp256k1;
25 use ln::{PaymentPreimage, PaymentHash};
26 use ln::features::{ChannelFeatures, ChannelTypeFeatures, InitFeatures};
28 use ln::msgs::{DecodeError, OptionalField, DataLossProtect};
29 use ln::script::{self, ShutdownScript};
30 use ln::channelmanager::{CounterpartyForwardingInfo, PendingHTLCStatus, HTLCSource, HTLCFailReason, HTLCFailureMsg, PendingHTLCInfo, RAACommitmentOrder, BREAKDOWN_TIMEOUT, MIN_CLTV_EXPIRY_DELTA, MAX_LOCAL_BREAKDOWN_TIMEOUT};
31 use ln::chan_utils::{CounterpartyCommitmentSecrets, TxCreationKeys, HTLCOutputInCommitment, htlc_success_tx_weight, htlc_timeout_tx_weight, make_funding_redeemscript, ChannelPublicKeys, CommitmentTransaction, HolderCommitmentTransaction, ChannelTransactionParameters, CounterpartyChannelTransactionParameters, MAX_HTLCS, get_commitment_transaction_number_obscure_factor, ClosingTransaction};
34 use chain::chaininterface::{FeeEstimator,ConfirmationTarget};
35 use chain::channelmonitor::{ChannelMonitor, ChannelMonitorUpdate, ChannelMonitorUpdateStep, LATENCY_GRACE_PERIOD_BLOCKS};
36 use chain::transaction::{OutPoint, TransactionData};
37 use chain::keysinterface::{Sign, KeysInterface};
38 use util::events::ClosureReason;
39 use util::ser::{Readable, ReadableArgs, Writeable, Writer, VecWriter};
40 use util::logger::Logger;
41 use util::errors::APIError;
42 use util::config::{UserConfig, ChannelConfig, ChannelHandshakeConfig, ChannelHandshakeLimits};
43 use util::scid_utils::scid_from_parts;
47 use core::{cmp,mem,fmt};
49 #[cfg(any(test, fuzzing, debug_assertions))]
51 use bitcoin::hashes::hex::ToHex;
54 pub struct ChannelValueStat {
55 pub value_to_self_msat: u64,
56 pub channel_value_msat: u64,
57 pub channel_reserve_msat: u64,
58 pub pending_outbound_htlcs_amount_msat: u64,
59 pub pending_inbound_htlcs_amount_msat: u64,
60 pub holding_cell_outbound_amount_msat: u64,
61 pub counterparty_max_htlc_value_in_flight_msat: u64, // outgoing
62 pub counterparty_dust_limit_msat: u64,
65 pub struct AvailableBalances {
66 /// The amount that would go to us if we close the channel, ignoring any on-chain fees.
67 pub balance_msat: u64,
68 /// Total amount available for our counterparty to send to us.
69 pub inbound_capacity_msat: u64,
70 /// Total amount available for us to send to our counterparty.
71 pub outbound_capacity_msat: u64,
72 /// The maximum value we can assign to the next outbound HTLC
73 pub next_outbound_htlc_limit_msat: u64,
76 #[derive(Debug, Clone, Copy, PartialEq)]
78 // Inbound states mirroring InboundHTLCState
80 AwaitingRemoteRevokeToAnnounce,
81 // Note that we do not have a AwaitingAnnouncedRemoteRevoke variant here as it is universally
82 // handled the same as `Committed`, with the only exception in `InboundHTLCState` being the
83 // distinction of when we allow ourselves to forward the HTLC. Because we aren't "forwarding"
84 // the fee update anywhere, we can simply consider the fee update `Committed` immediately
85 // instead of setting it to AwaitingAnnouncedRemoteRevoke.
87 // Outbound state can only be `LocalAnnounced` or `Committed`
91 enum InboundHTLCRemovalReason {
92 FailRelay(msgs::OnionErrorPacket),
93 FailMalformed(([u8; 32], u16)),
94 Fulfill(PaymentPreimage),
97 enum InboundHTLCState {
98 /// Offered by remote, to be included in next local commitment tx. I.e., the remote sent an
99 /// update_add_htlc message for this HTLC.
100 RemoteAnnounced(PendingHTLCStatus),
101 /// Included in a received commitment_signed message (implying we've
102 /// revoke_and_ack'd it), but the remote hasn't yet revoked their previous
103 /// state (see the example below). We have not yet included this HTLC in a
104 /// commitment_signed message because we are waiting on the remote's
105 /// aforementioned state revocation. One reason this missing remote RAA
106 /// (revoke_and_ack) blocks us from constructing a commitment_signed message
107 /// is because every time we create a new "state", i.e. every time we sign a
108 /// new commitment tx (see [BOLT #2]), we need a new per_commitment_point,
109 /// which are provided one-at-a-time in each RAA. E.g., the last RAA they
110 /// sent provided the per_commitment_point for our current commitment tx.
111 /// The other reason we should not send a commitment_signed without their RAA
112 /// is because their RAA serves to ACK our previous commitment_signed.
114 /// Here's an example of how an HTLC could come to be in this state:
115 /// remote --> update_add_htlc(prev_htlc) --> local
116 /// remote --> commitment_signed(prev_htlc) --> local
117 /// remote <-- revoke_and_ack <-- local
118 /// remote <-- commitment_signed(prev_htlc) <-- local
119 /// [note that here, the remote does not respond with a RAA]
120 /// remote --> update_add_htlc(this_htlc) --> local
121 /// remote --> commitment_signed(prev_htlc, this_htlc) --> local
122 /// Now `this_htlc` will be assigned this state. It's unable to be officially
123 /// accepted, i.e. included in a commitment_signed, because we're missing the
124 /// RAA that provides our next per_commitment_point. The per_commitment_point
125 /// is used to derive commitment keys, which are used to construct the
126 /// signatures in a commitment_signed message.
127 /// Implies AwaitingRemoteRevoke.
129 /// [BOLT #2]: https://github.com/lightningnetwork/lightning-rfc/blob/master/02-peer-protocol.md
130 AwaitingRemoteRevokeToAnnounce(PendingHTLCStatus),
131 /// Included in a received commitment_signed message (implying we've revoke_and_ack'd it).
132 /// We have also included this HTLC in our latest commitment_signed and are now just waiting
133 /// on the remote's revoke_and_ack to make this HTLC an irrevocable part of the state of the
134 /// channel (before it can then get forwarded and/or removed).
135 /// Implies AwaitingRemoteRevoke.
136 AwaitingAnnouncedRemoteRevoke(PendingHTLCStatus),
138 /// Removed by us and a new commitment_signed was sent (if we were AwaitingRemoteRevoke when we
139 /// created it we would have put it in the holding cell instead). When they next revoke_and_ack
141 /// Note that we have to keep an eye on the HTLC until we've received a broadcastable
142 /// commitment transaction without it as otherwise we'll have to force-close the channel to
143 /// claim it before the timeout (obviously doesn't apply to revoked HTLCs that we can't claim
144 /// anyway). That said, ChannelMonitor does this for us (see
145 /// ChannelMonitor::should_broadcast_holder_commitment_txn) so we actually remove the HTLC from
146 /// our own local state before then, once we're sure that the next commitment_signed and
147 /// ChannelMonitor::provide_latest_local_commitment_tx will not include this HTLC.
148 LocalRemoved(InboundHTLCRemovalReason),
151 struct InboundHTLCOutput {
155 payment_hash: PaymentHash,
156 state: InboundHTLCState,
159 enum OutboundHTLCState {
160 /// Added by us and included in a commitment_signed (if we were AwaitingRemoteRevoke when we
161 /// created it we would have put it in the holding cell instead). When they next revoke_and_ack
162 /// we will promote to Committed (note that they may not accept it until the next time we
163 /// revoke, but we don't really care about that:
164 /// * they've revoked, so worst case we can announce an old state and get our (option on)
165 /// money back (though we won't), and,
166 /// * we'll send them a revoke when they send a commitment_signed, and since only they're
167 /// allowed to remove it, the "can only be removed once committed on both sides" requirement
168 /// doesn't matter to us and it's up to them to enforce it, worst-case they jump ahead but
169 /// we'll never get out of sync).
170 /// Note that we Box the OnionPacket as it's rather large and we don't want to blow up
171 /// OutboundHTLCOutput's size just for a temporary bit
172 LocalAnnounced(Box<msgs::OnionPacket>),
174 /// Remote removed this (outbound) HTLC. We're waiting on their commitment_signed to finalize
175 /// the change (though they'll need to revoke before we fail the payment).
176 RemoteRemoved(OutboundHTLCOutcome),
177 /// Remote removed this and sent a commitment_signed (implying we've revoke_and_ack'ed it), but
178 /// the remote side hasn't yet revoked their previous state, which we need them to do before we
179 /// can do any backwards failing. Implies AwaitingRemoteRevoke.
180 /// We also have not yet removed this HTLC in a commitment_signed message, and are waiting on a
181 /// remote revoke_and_ack on a previous state before we can do so.
182 AwaitingRemoteRevokeToRemove(OutboundHTLCOutcome),
183 /// Remote removed this and sent a commitment_signed (implying we've revoke_and_ack'ed it), but
184 /// the remote side hasn't yet revoked their previous state, which we need them to do before we
185 /// can do any backwards failing. Implies AwaitingRemoteRevoke.
186 /// We have removed this HTLC in our latest commitment_signed and are now just waiting on a
187 /// revoke_and_ack to drop completely.
188 AwaitingRemovedRemoteRevoke(OutboundHTLCOutcome),
192 enum OutboundHTLCOutcome {
193 Success(Option<PaymentPreimage>),
194 Failure(HTLCFailReason),
197 impl From<Option<HTLCFailReason>> for OutboundHTLCOutcome {
198 fn from(o: Option<HTLCFailReason>) -> Self {
200 None => OutboundHTLCOutcome::Success(None),
201 Some(r) => OutboundHTLCOutcome::Failure(r)
206 impl<'a> Into<Option<&'a HTLCFailReason>> for &'a OutboundHTLCOutcome {
207 fn into(self) -> Option<&'a HTLCFailReason> {
209 OutboundHTLCOutcome::Success(_) => None,
210 OutboundHTLCOutcome::Failure(ref r) => Some(r)
215 struct OutboundHTLCOutput {
219 payment_hash: PaymentHash,
220 state: OutboundHTLCState,
224 /// See AwaitingRemoteRevoke ChannelState for more info
225 enum HTLCUpdateAwaitingACK {
226 AddHTLC { // TODO: Time out if we're getting close to cltv_expiry
230 payment_hash: PaymentHash,
232 onion_routing_packet: msgs::OnionPacket,
235 payment_preimage: PaymentPreimage,
240 err_packet: msgs::OnionErrorPacket,
244 /// There are a few "states" and then a number of flags which can be applied:
245 /// We first move through init with OurInitSent -> TheirInitSent -> FundingCreated -> FundingSent.
246 /// TheirFundingLocked and OurFundingLocked then get set on FundingSent, and when both are set we
247 /// move on to ChannelFunded.
248 /// Note that PeerDisconnected can be set on both ChannelFunded and FundingSent.
249 /// ChannelFunded can then get all remaining flags set on it, until we finish shutdown, then we
250 /// move on to ShutdownComplete, at which point most calls into this channel are disallowed.
252 /// Implies we have (or are prepared to) send our open_channel/accept_channel message
253 OurInitSent = 1 << 0,
254 /// Implies we have received their open_channel/accept_channel message
255 TheirInitSent = 1 << 1,
256 /// We have sent funding_created and are awaiting a funding_signed to advance to FundingSent.
257 /// Note that this is nonsense for an inbound channel as we immediately generate funding_signed
258 /// upon receipt of funding_created, so simply skip this state.
260 /// Set when we have received/sent funding_created and funding_signed and are thus now waiting
261 /// on the funding transaction to confirm. The FundingLocked flags are set to indicate when we
262 /// and our counterparty consider the funding transaction confirmed.
264 /// Flag which can be set on FundingSent to indicate they sent us a funding_locked message.
265 /// Once both TheirFundingLocked and OurFundingLocked are set, state moves on to ChannelFunded.
266 TheirFundingLocked = 1 << 4,
267 /// Flag which can be set on FundingSent to indicate we sent them a funding_locked message.
268 /// Once both TheirFundingLocked and OurFundingLocked are set, state moves on to ChannelFunded.
269 OurFundingLocked = 1 << 5,
271 /// Flag which is set on ChannelFunded and FundingSent indicating remote side is considered
272 /// "disconnected" and no updates are allowed until after we've done a channel_reestablish
274 PeerDisconnected = 1 << 7,
275 /// Flag which is set on ChannelFunded, FundingCreated, and FundingSent indicating the user has
276 /// told us they failed to update our ChannelMonitor somewhere and we should pause sending any
277 /// outbound messages until they've managed to do so.
278 MonitorUpdateFailed = 1 << 8,
279 /// Flag which implies that we have sent a commitment_signed but are awaiting the responding
280 /// revoke_and_ack message. During this time period, we can't generate new commitment_signed
281 /// messages as then we will be unable to determine which HTLCs they included in their
282 /// revoke_and_ack implicit ACK, so instead we have to hold them away temporarily to be sent
284 /// Flag is set on ChannelFunded.
285 AwaitingRemoteRevoke = 1 << 9,
286 /// Flag which is set on ChannelFunded or FundingSent after receiving a shutdown message from
287 /// the remote end. If set, they may not add any new HTLCs to the channel, and we are expected
288 /// to respond with our own shutdown message when possible.
289 RemoteShutdownSent = 1 << 10,
290 /// Flag which is set on ChannelFunded or FundingSent after sending a shutdown message. At this
291 /// point, we may not add any new HTLCs to the channel.
292 LocalShutdownSent = 1 << 11,
293 /// We've successfully negotiated a closing_signed dance. At this point ChannelManager is about
294 /// to drop us, but we store this anyway.
295 ShutdownComplete = 4096,
297 const BOTH_SIDES_SHUTDOWN_MASK: u32 = ChannelState::LocalShutdownSent as u32 | ChannelState::RemoteShutdownSent as u32;
298 const MULTI_STATE_FLAGS: u32 = BOTH_SIDES_SHUTDOWN_MASK | ChannelState::PeerDisconnected as u32 | ChannelState::MonitorUpdateFailed as u32;
300 pub const INITIAL_COMMITMENT_NUMBER: u64 = (1 << 48) - 1;
302 /// The "channel disabled" bit in channel_update must be set based on whether we are connected to
303 /// our counterparty or not. However, we don't want to announce updates right away to avoid
304 /// spamming the network with updates if the connection is flapping. Instead, we "stage" updates to
305 /// our channel_update message and track the current state here.
306 /// See implementation at [`super::channelmanager::ChannelManager::timer_tick_occurred`].
307 #[derive(Clone, Copy, PartialEq)]
308 pub(super) enum ChannelUpdateStatus {
309 /// We've announced the channel as enabled and are connected to our peer.
311 /// Our channel is no longer live, but we haven't announced the channel as disabled yet.
313 /// Our channel is live again, but we haven't announced the channel as enabled yet.
315 /// We've announced the channel as disabled.
319 /// We track when we sent an `AnnouncementSignatures` to our peer in a few states, described here.
321 pub enum AnnouncementSigsState {
322 /// We have not sent our peer an `AnnouncementSignatures` yet, or our peer disconnected since
323 /// we sent the last `AnnouncementSignatures`.
325 /// We sent an `AnnouncementSignatures` to our peer since the last time our peer disconnected.
326 /// This state never appears on disk - instead we write `NotSent`.
328 /// We sent a `CommitmentSigned` after the last `AnnouncementSignatures` we sent. Because we
329 /// only ever have a single `CommitmentSigned` pending at once, if we sent one after sending
330 /// `AnnouncementSignatures` then we know the peer received our `AnnouncementSignatures` if
331 /// they send back a `RevokeAndACK`.
332 /// This state never appears on disk - instead we write `NotSent`.
334 /// We received a `RevokeAndACK`, effectively ack-ing our `AnnouncementSignatures`, at this
335 /// point we no longer need to re-send our `AnnouncementSignatures` again on reconnect.
339 /// An enum indicating whether the local or remote side offered a given HTLC.
345 /// An enum gathering stats on pending HTLCs, either inbound or outbound side.
348 pending_htlcs_value_msat: u64,
349 on_counterparty_tx_dust_exposure_msat: u64,
350 on_holder_tx_dust_exposure_msat: u64,
351 holding_cell_msat: u64,
352 on_holder_tx_holding_cell_htlcs_count: u32, // dust HTLCs *non*-included
355 /// An enum gathering stats on commitment transaction, either local or remote.
356 struct CommitmentStats<'a> {
357 tx: CommitmentTransaction, // the transaction info
358 feerate_per_kw: u32, // the feerate included to build the transaction
359 total_fee_sat: u64, // the total fee included in the transaction
360 num_nondust_htlcs: usize, // the number of HTLC outputs (dust HTLCs *non*-included)
361 htlcs_included: Vec<(HTLCOutputInCommitment, Option<&'a HTLCSource>)>, // the list of HTLCs (dust HTLCs *included*) which were not ignored when building the transaction
362 local_balance_msat: u64, // local balance before fees but considering dust limits
363 remote_balance_msat: u64, // remote balance before fees but considering dust limits
364 preimages: Vec<PaymentPreimage>, // preimages for successful offered HTLCs since last commitment
367 /// Used when calculating whether we or the remote can afford an additional HTLC.
368 struct HTLCCandidate {
370 origin: HTLCInitiator,
374 fn new(amount_msat: u64, origin: HTLCInitiator) -> Self {
382 /// A return value enum for get_update_fulfill_htlc. See UpdateFulfillCommitFetch variants for
384 enum UpdateFulfillFetch {
386 monitor_update: ChannelMonitorUpdate,
387 htlc_value_msat: u64,
388 msg: Option<msgs::UpdateFulfillHTLC>,
393 /// The return type of get_update_fulfill_htlc_and_commit.
394 pub enum UpdateFulfillCommitFetch {
395 /// Indicates the HTLC fulfill is new, and either generated an update_fulfill message, placed
396 /// it in the holding cell, or re-generated the update_fulfill message after the same claim was
397 /// previously placed in the holding cell (and has since been removed).
399 /// The ChannelMonitorUpdate which places the new payment preimage in the channel monitor
400 monitor_update: ChannelMonitorUpdate,
401 /// The value of the HTLC which was claimed, in msat.
402 htlc_value_msat: u64,
403 /// The update_fulfill message and commitment_signed message (if the claim was not placed
404 /// in the holding cell).
405 msgs: Option<(msgs::UpdateFulfillHTLC, msgs::CommitmentSigned)>,
407 /// Indicates the HTLC fulfill is duplicative and already existed either in the holding cell
408 /// or has been forgotten (presumably previously claimed).
412 /// The return value of `revoke_and_ack` on success, primarily updates to other channels or HTLC
414 pub(super) struct RAAUpdates {
415 pub commitment_update: Option<msgs::CommitmentUpdate>,
416 pub accepted_htlcs: Vec<(PendingHTLCInfo, u64)>,
417 pub failed_htlcs: Vec<(HTLCSource, PaymentHash, HTLCFailReason)>,
418 pub finalized_claimed_htlcs: Vec<HTLCSource>,
419 pub monitor_update: ChannelMonitorUpdate,
420 pub holding_cell_failed_htlcs: Vec<(HTLCSource, PaymentHash)>,
423 /// The return value of `monitor_updating_restored`
424 pub(super) struct MonitorRestoreUpdates {
425 pub raa: Option<msgs::RevokeAndACK>,
426 pub commitment_update: Option<msgs::CommitmentUpdate>,
427 pub order: RAACommitmentOrder,
428 pub accepted_htlcs: Vec<(PendingHTLCInfo, u64)>,
429 pub failed_htlcs: Vec<(HTLCSource, PaymentHash, HTLCFailReason)>,
430 pub finalized_claimed_htlcs: Vec<HTLCSource>,
431 pub funding_broadcastable: Option<Transaction>,
432 pub funding_locked: Option<msgs::FundingLocked>,
433 pub announcement_sigs: Option<msgs::AnnouncementSignatures>,
436 /// The return value of `channel_reestablish`
437 pub(super) struct ReestablishResponses {
438 pub funding_locked: Option<msgs::FundingLocked>,
439 pub raa: Option<msgs::RevokeAndACK>,
440 pub commitment_update: Option<msgs::CommitmentUpdate>,
441 pub order: RAACommitmentOrder,
442 pub mon_update: Option<ChannelMonitorUpdate>,
443 pub holding_cell_failed_htlcs: Vec<(HTLCSource, PaymentHash)>,
444 pub announcement_sigs: Option<msgs::AnnouncementSignatures>,
445 pub shutdown_msg: Option<msgs::Shutdown>,
448 /// If the majority of the channels funds are to the fundee and the initiator holds only just
449 /// enough funds to cover their reserve value, channels are at risk of getting "stuck". Because the
450 /// initiator controls the feerate, if they then go to increase the channel fee, they may have no
451 /// balance but the fundee is unable to send a payment as the increase in fee more than drains
452 /// their reserve value. Thus, neither side can send a new HTLC and the channel becomes useless.
453 /// Thus, before sending an HTLC when we are the initiator, we check that the feerate can increase
454 /// by this multiple without hitting this case, before sending.
455 /// This multiple is effectively the maximum feerate "jump" we expect until more HTLCs flow over
456 /// the channel. Sadly, there isn't really a good number for this - if we expect to have no new
457 /// HTLCs for days we may need this to suffice for feerate increases across days, but that may
458 /// leave the channel less usable as we hold a bigger reserve.
459 #[cfg(any(fuzzing, test))]
460 pub const FEE_SPIKE_BUFFER_FEE_INCREASE_MULTIPLE: u64 = 2;
461 #[cfg(not(any(fuzzing, test)))]
462 const FEE_SPIKE_BUFFER_FEE_INCREASE_MULTIPLE: u64 = 2;
464 /// If we fail to see a funding transaction confirmed on-chain within this many blocks after the
465 /// channel creation on an inbound channel, we simply force-close and move on.
466 /// This constant is the one suggested in BOLT 2.
467 pub(crate) const FUNDING_CONF_DEADLINE_BLOCKS: u32 = 2016;
469 /// In case of a concurrent update_add_htlc proposed by our counterparty, we might
470 /// not have enough balance value remaining to cover the onchain cost of this new
471 /// HTLC weight. If this happens, our counterparty fails the reception of our
472 /// commitment_signed including this new HTLC due to infringement on the channel
474 /// To prevent this case, we compute our outbound update_fee with an HTLC buffer of
475 /// size 2. However, if the number of concurrent update_add_htlc is higher, this still
476 /// leads to a channel force-close. Ultimately, this is an issue coming from the
477 /// design of LN state machines, allowing asynchronous updates.
478 pub(crate) const CONCURRENT_INBOUND_HTLC_FEE_BUFFER: u32 = 2;
480 /// When a channel is opened, we check that the funding amount is enough to pay for relevant
481 /// commitment transaction fees, with at least this many HTLCs present on the commitment
482 /// transaction (not counting the value of the HTLCs themselves).
483 pub(crate) const MIN_AFFORDABLE_HTLC_COUNT: usize = 4;
485 // TODO: We should refactor this to be an Inbound/OutboundChannel until initial setup handshaking
486 // has been completed, and then turn into a Channel to get compiler-time enforcement of things like
487 // calling channel_id() before we're set up or things like get_outbound_funding_signed on an
490 // Holder designates channel data owned for the benefice of the user client.
491 // Counterparty designates channel data owned by the another channel participant entity.
492 pub(super) struct Channel<Signer: Sign> {
493 #[cfg(any(test, feature = "_test_utils"))]
494 pub(crate) config: ChannelConfig,
495 #[cfg(not(any(test, feature = "_test_utils")))]
496 config: ChannelConfig,
498 inbound_handshake_limits_override: Option<ChannelHandshakeLimits>,
502 channel_id: [u8; 32],
505 // When we reach max(6 blocks, minimum_depth), we need to send an AnnouncementSigs message to
506 // our peer. However, we want to make sure they received it, or else rebroadcast it when we
508 // We do so here, see `AnnouncementSigsSent` for more details on the state(s).
509 // Note that a number of our tests were written prior to the behavior here which retransmits
510 // AnnouncementSignatures until after an RAA completes, so the behavior is short-circuited in
512 #[cfg(any(test, feature = "_test_utils"))]
513 pub(crate) announcement_sigs_state: AnnouncementSigsState,
514 #[cfg(not(any(test, feature = "_test_utils")))]
515 announcement_sigs_state: AnnouncementSigsState,
517 secp_ctx: Secp256k1<secp256k1::All>,
518 channel_value_satoshis: u64,
520 latest_monitor_update_id: u64,
522 holder_signer: Signer,
523 shutdown_scriptpubkey: Option<ShutdownScript>,
524 destination_script: Script,
526 // Our commitment numbers start at 2^48-1 and count down, whereas the ones used in transaction
527 // generation start at 0 and count up...this simplifies some parts of implementation at the
528 // cost of others, but should really just be changed.
530 cur_holder_commitment_transaction_number: u64,
531 cur_counterparty_commitment_transaction_number: u64,
532 value_to_self_msat: u64, // Excluding all pending_htlcs, excluding fees
533 pending_inbound_htlcs: Vec<InboundHTLCOutput>,
534 pending_outbound_htlcs: Vec<OutboundHTLCOutput>,
535 holding_cell_htlc_updates: Vec<HTLCUpdateAwaitingACK>,
537 /// When resending CS/RAA messages on channel monitor restoration or on reconnect, we always
538 /// need to ensure we resend them in the order we originally generated them. Note that because
539 /// there can only ever be one in-flight CS and/or one in-flight RAA at any time, it is
540 /// sufficient to simply set this to the opposite of any message we are generating as we
541 /// generate it. ie when we generate a CS, we set this to RAAFirst as, if there is a pending
542 /// in-flight RAA to resend, it will have been the first thing we generated, and thus we should
544 resend_order: RAACommitmentOrder,
546 monitor_pending_funding_locked: bool,
547 monitor_pending_revoke_and_ack: bool,
548 monitor_pending_commitment_signed: bool,
549 monitor_pending_forwards: Vec<(PendingHTLCInfo, u64)>,
550 monitor_pending_failures: Vec<(HTLCSource, PaymentHash, HTLCFailReason)>,
551 monitor_pending_finalized_fulfills: Vec<HTLCSource>,
553 // pending_update_fee is filled when sending and receiving update_fee.
555 // Because it follows the same commitment flow as HTLCs, `FeeUpdateState` is either `Outbound`
556 // or matches a subset of the `InboundHTLCOutput` variants. It is then updated/used when
557 // generating new commitment transactions with exactly the same criteria as inbound/outbound
558 // HTLCs with similar state.
559 pending_update_fee: Option<(u32, FeeUpdateState)>,
560 // If a `send_update_fee()` call is made with ChannelState::AwaitingRemoteRevoke set, we place
561 // it here instead of `pending_update_fee` in the same way as we place outbound HTLC updates in
562 // `holding_cell_htlc_updates` instead of `pending_outbound_htlcs`. It is released into
563 // `pending_update_fee` with the same criteria as outbound HTLC updates but can be updated by
564 // further `send_update_fee` calls, dropping the previous holding cell update entirely.
565 holding_cell_update_fee: Option<u32>,
566 next_holder_htlc_id: u64,
567 next_counterparty_htlc_id: u64,
570 /// The timestamp set on our latest `channel_update` message for this channel. It is updated
571 /// when the channel is updated in ways which may impact the `channel_update` message or when a
572 /// new block is received, ensuring it's always at least moderately close to the current real
574 update_time_counter: u32,
576 #[cfg(debug_assertions)]
577 /// Max to_local and to_remote outputs in a locally-generated commitment transaction
578 holder_max_commitment_tx_output: Mutex<(u64, u64)>,
579 #[cfg(debug_assertions)]
580 /// Max to_local and to_remote outputs in a remote-generated commitment transaction
581 counterparty_max_commitment_tx_output: Mutex<(u64, u64)>,
583 last_sent_closing_fee: Option<(u64, Signature)>, // (fee, holder_sig)
584 target_closing_feerate_sats_per_kw: Option<u32>,
586 /// If our counterparty sent us a closing_signed while we were waiting for a `ChannelMonitor`
587 /// update, we need to delay processing it until later. We do that here by simply storing the
588 /// closing_signed message and handling it in `maybe_propose_closing_signed`.
589 pending_counterparty_closing_signed: Option<msgs::ClosingSigned>,
591 /// The minimum and maximum absolute fee, in satoshis, we are willing to place on the closing
592 /// transaction. These are set once we reach `closing_negotiation_ready`.
594 pub(crate) closing_fee_limits: Option<(u64, u64)>,
596 closing_fee_limits: Option<(u64, u64)>,
598 /// Flag that ensures that `accept_inbound_channel` must be called before `funding_created`
599 /// is executed successfully. The reason for this flag is that when the
600 /// `UserConfig::manually_accept_inbound_channels` config flag is set to true, inbound channels
601 /// are required to be manually accepted by the node operator before the `msgs::AcceptChannel`
602 /// message is created and sent out. During the manual accept process, `accept_inbound_channel`
603 /// is called by `ChannelManager::accept_inbound_channel`.
605 /// The flag counteracts that a counterparty node could theoretically send a
606 /// `msgs::FundingCreated` message before the node operator has manually accepted an inbound
607 /// channel request made by the counterparty node. That would execute `funding_created` before
608 /// `accept_inbound_channel`, and `funding_created` should therefore not execute successfully.
609 inbound_awaiting_accept: bool,
611 /// The hash of the block in which the funding transaction was included.
612 funding_tx_confirmed_in: Option<BlockHash>,
613 funding_tx_confirmation_height: u32,
614 short_channel_id: Option<u64>,
615 /// Either the height at which this channel was created or the height at which it was last
616 /// serialized if it was serialized by versions prior to 0.0.103.
617 /// We use this to close if funding is never broadcasted.
618 channel_creation_height: u32,
620 counterparty_dust_limit_satoshis: u64,
623 pub(super) holder_dust_limit_satoshis: u64,
625 holder_dust_limit_satoshis: u64,
628 pub(super) counterparty_max_htlc_value_in_flight_msat: u64,
630 counterparty_max_htlc_value_in_flight_msat: u64,
633 pub(super) holder_max_htlc_value_in_flight_msat: u64,
635 holder_max_htlc_value_in_flight_msat: u64,
637 /// minimum channel reserve for self to maintain - set by them.
638 counterparty_selected_channel_reserve_satoshis: Option<u64>,
641 pub(super) holder_selected_channel_reserve_satoshis: u64,
643 holder_selected_channel_reserve_satoshis: u64,
645 counterparty_htlc_minimum_msat: u64,
646 holder_htlc_minimum_msat: u64,
648 pub counterparty_max_accepted_htlcs: u16,
650 counterparty_max_accepted_htlcs: u16,
651 //implied by OUR_MAX_HTLCS: max_accepted_htlcs: u16,
652 minimum_depth: Option<u32>,
654 counterparty_forwarding_info: Option<CounterpartyForwardingInfo>,
656 pub(crate) channel_transaction_parameters: ChannelTransactionParameters,
657 funding_transaction: Option<Transaction>,
659 counterparty_cur_commitment_point: Option<PublicKey>,
660 counterparty_prev_commitment_point: Option<PublicKey>,
661 counterparty_node_id: PublicKey,
663 counterparty_shutdown_scriptpubkey: Option<Script>,
665 commitment_secrets: CounterpartyCommitmentSecrets,
667 channel_update_status: ChannelUpdateStatus,
668 /// Once we reach `closing_negotiation_ready`, we set this, indicating if closing_signed does
669 /// not complete within a single timer tick (one minute), we should force-close the channel.
670 /// This prevents us from keeping unusable channels around forever if our counterparty wishes
672 /// Note that this field is reset to false on deserialization to give us a chance to connect to
673 /// our peer and start the closing_signed negotiation fresh.
674 closing_signed_in_flight: bool,
676 /// Our counterparty's channel_announcement signatures provided in announcement_signatures.
677 /// This can be used to rebroadcast the channel_announcement message later.
678 announcement_sigs: Option<(Signature, Signature)>,
680 // We save these values so we can make sure `next_local_commit_tx_fee_msat` and
681 // `next_remote_commit_tx_fee_msat` properly predict what the next commitment transaction fee will
682 // be, by comparing the cached values to the fee of the tranaction generated by
683 // `build_commitment_transaction`.
684 #[cfg(any(test, fuzzing))]
685 next_local_commitment_tx_fee_info_cached: Mutex<Option<CommitmentTxInfoCached>>,
686 #[cfg(any(test, fuzzing))]
687 next_remote_commitment_tx_fee_info_cached: Mutex<Option<CommitmentTxInfoCached>>,
689 /// lnd has a long-standing bug where, upon reconnection, if the channel is not yet confirmed
690 /// they will not send a channel_reestablish until the channel locks in. Then, they will send a
691 /// funding_locked *before* sending the channel_reestablish (which is clearly a violation of
692 /// the BOLT specs). We copy c-lightning's workaround here and simply store the funding_locked
693 /// message until we receive a channel_reestablish.
695 /// See-also <https://github.com/lightningnetwork/lnd/issues/4006>
696 pub workaround_lnd_bug_4006: Option<msgs::FundingLocked>,
698 #[cfg(any(test, fuzzing))]
699 // When we receive an HTLC fulfill on an outbound path, we may immediately fulfill the
700 // corresponding HTLC on the inbound path. If, then, the outbound path channel is
701 // disconnected and reconnected (before we've exchange commitment_signed and revoke_and_ack
702 // messages), they may re-broadcast their update_fulfill_htlc, causing a duplicate claim. This
703 // is fine, but as a sanity check in our failure to generate the second claim, we check here
704 // that the original was a claim, and that we aren't now trying to fulfill a failed HTLC.
705 historical_inbound_htlc_fulfills: HashSet<u64>,
707 /// This channel's type, as negotiated during channel open
708 channel_type: ChannelTypeFeatures,
710 // Our counterparty can offer us SCID aliases which they will map to this channel when routing
711 // outbound payments. These can be used in invoice route hints to avoid explicitly revealing
712 // the channel's funding UTXO.
713 // We only bother storing the most recent SCID alias at any time, though our counterparty has
714 // to store all of them.
715 latest_inbound_scid_alias: Option<u64>,
717 // We always offer our counterparty a static SCID alias, which we recognize as for this channel
718 // if we see it in HTLC forwarding instructions. We don't bother rotating the alias given we
719 // don't currently support node id aliases and eventually privacy should be provided with
720 // blinded paths instead of simple scid+node_id aliases.
721 outbound_scid_alias: u64,
724 #[cfg(any(test, fuzzing))]
725 struct CommitmentTxInfoCached {
727 total_pending_htlcs: usize,
728 next_holder_htlc_id: u64,
729 next_counterparty_htlc_id: u64,
733 pub const OUR_MAX_HTLCS: u16 = 50; //TODO
735 pub(crate) fn commitment_tx_base_weight(opt_anchors: bool) -> u64 {
736 const COMMITMENT_TX_BASE_WEIGHT: u64 = 724;
737 const COMMITMENT_TX_BASE_ANCHOR_WEIGHT: u64 = 1124;
738 if opt_anchors { COMMITMENT_TX_BASE_ANCHOR_WEIGHT } else { COMMITMENT_TX_BASE_WEIGHT }
742 const COMMITMENT_TX_WEIGHT_PER_HTLC: u64 = 172;
744 pub const COMMITMENT_TX_WEIGHT_PER_HTLC: u64 = 172;
746 pub const ANCHOR_OUTPUT_VALUE_SATOSHI: u64 = 330;
748 /// The percentage of the channel value `holder_max_htlc_value_in_flight_msat` used to be set to,
749 /// before this was made configurable. The percentage was made configurable in LDK 0.0.107,
750 /// although LDK 0.0.104+ enabled serialization of channels with a different value set for
751 /// `holder_max_htlc_value_in_flight_msat`.
752 pub const MAX_IN_FLIGHT_PERCENT_LEGACY: u8 = 10;
754 /// Maximum `funding_satoshis` value according to the BOLT #2 specification, if
755 /// `option_support_large_channel` (aka wumbo channels) is not supported.
757 pub const MAX_FUNDING_SATOSHIS_NO_WUMBO: u64 = (1 << 24) - 1;
759 /// Total bitcoin supply in satoshis.
760 pub const TOTAL_BITCOIN_SUPPLY_SATOSHIS: u64 = 21_000_000 * 1_0000_0000;
762 /// The maximum network dust limit for standard script formats. This currently represents the
763 /// minimum output value for a P2SH output before Bitcoin Core 22 considers the entire
764 /// transaction non-standard and thus refuses to relay it.
765 /// We also use this as the maximum counterparty `dust_limit_satoshis` allowed, given many
766 /// implementations use this value for their dust limit today.
767 pub const MAX_STD_OUTPUT_DUST_LIMIT_SATOSHIS: u64 = 546;
769 /// The maximum channel dust limit we will accept from our counterparty.
770 pub const MAX_CHAN_DUST_LIMIT_SATOSHIS: u64 = MAX_STD_OUTPUT_DUST_LIMIT_SATOSHIS;
772 /// The dust limit is used for both the commitment transaction outputs as well as the closing
773 /// transactions. For cooperative closing transactions, we require segwit outputs, though accept
774 /// *any* segwit scripts, which are allowed to be up to 42 bytes in length.
775 /// In order to avoid having to concern ourselves with standardness during the closing process, we
776 /// simply require our counterparty to use a dust limit which will leave any segwit output
778 /// See https://github.com/lightningnetwork/lightning-rfc/issues/905 for more details.
779 pub const MIN_CHAN_DUST_LIMIT_SATOSHIS: u64 = 354;
781 /// Used to return a simple Error back to ChannelManager. Will get converted to a
782 /// msgs::ErrorAction::SendErrorMessage or msgs::ErrorAction::IgnoreError as appropriate with our
783 /// channel_id in ChannelManager.
784 pub(super) enum ChannelError {
788 CloseDelayBroadcast(String),
791 impl fmt::Debug for ChannelError {
792 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
794 &ChannelError::Ignore(ref e) => write!(f, "Ignore : {}", e),
795 &ChannelError::Warn(ref e) => write!(f, "Warn : {}", e),
796 &ChannelError::Close(ref e) => write!(f, "Close : {}", e),
797 &ChannelError::CloseDelayBroadcast(ref e) => write!(f, "CloseDelayBroadcast : {}", e)
802 macro_rules! secp_check {
803 ($res: expr, $err: expr) => {
806 Err(_) => return Err(ChannelError::Close($err)),
811 impl<Signer: Sign> Channel<Signer> {
812 /// Returns the value to use for `holder_max_htlc_value_in_flight_msat` as a percentage of the
813 /// `channel_value_satoshis` in msat, set through
814 /// [`ChannelHandshakeConfig::max_inbound_htlc_value_in_flight_percent_of_channel`]
816 /// The effective percentage is lower bounded by 1% and upper bounded by 100%.
818 /// [`ChannelHandshakeConfig::max_inbound_htlc_value_in_flight_percent_of_channel`]: crate::util::config::ChannelHandshakeConfig::max_inbound_htlc_value_in_flight_percent_of_channel
819 fn get_holder_max_htlc_value_in_flight_msat(channel_value_satoshis: u64, config: &ChannelHandshakeConfig) -> u64 {
820 let configured_percent = if config.max_inbound_htlc_value_in_flight_percent_of_channel < 1 {
822 } else if config.max_inbound_htlc_value_in_flight_percent_of_channel > 100 {
825 config.max_inbound_htlc_value_in_flight_percent_of_channel as u64
827 channel_value_satoshis * 10 * configured_percent
830 /// Returns a minimum channel reserve value the remote needs to maintain,
833 /// Guaranteed to return a value no larger than channel_value_satoshis
835 /// This is used both for new channels and to figure out what reserve value we sent to peers
836 /// for channels serialized before we included our selected reserve value in the serialized
838 pub(crate) fn get_holder_selected_channel_reserve_satoshis(channel_value_satoshis: u64) -> u64 {
839 let (q, _) = channel_value_satoshis.overflowing_div(100);
840 cmp::min(channel_value_satoshis, cmp::max(q, 1000)) //TODO
843 pub(crate) fn opt_anchors(&self) -> bool {
844 self.channel_transaction_parameters.opt_anchors.is_some()
847 fn get_initial_channel_type(config: &UserConfig) -> ChannelTypeFeatures {
848 // The default channel type (ie the first one we try) depends on whether the channel is
849 // public - if it is, we just go with `only_static_remotekey` as it's the only option
850 // available. If it's private, we first try `scid_privacy` as it provides better privacy
851 // with no other changes, and fall back to `only_static_remotekey`
852 let mut ret = ChannelTypeFeatures::only_static_remote_key();
853 if !config.channel_options.announced_channel && config.own_channel_config.negotiate_scid_privacy {
854 ret.set_scid_privacy_required();
859 /// If we receive an error message, it may only be a rejection of the channel type we tried,
860 /// not of our ability to open any channel at all. Thus, on error, we should first call this
861 /// and see if we get a new `OpenChannel` message, otherwise the channel is failed.
862 pub(crate) fn maybe_handle_error_without_close(&mut self, chain_hash: BlockHash) -> Result<msgs::OpenChannel, ()> {
863 if !self.is_outbound() || self.channel_state != ChannelState::OurInitSent as u32 { return Err(()); }
864 if self.channel_type == ChannelTypeFeatures::only_static_remote_key() {
865 // We've exhausted our options
868 self.channel_type = ChannelTypeFeatures::only_static_remote_key(); // We only currently support two types
869 Ok(self.get_open_channel(chain_hash))
873 pub fn new_outbound<K: Deref, F: Deref>(
874 fee_estimator: &F, keys_provider: &K, counterparty_node_id: PublicKey, their_features: &InitFeatures,
875 channel_value_satoshis: u64, push_msat: u64, user_id: u64, config: &UserConfig, current_chain_height: u32,
876 outbound_scid_alias: u64
877 ) -> Result<Channel<Signer>, APIError>
878 where K::Target: KeysInterface<Signer = Signer>,
879 F::Target: FeeEstimator,
881 let opt_anchors = false; // TODO - should be based on features
883 let holder_selected_contest_delay = config.own_channel_config.our_to_self_delay;
884 let holder_signer = keys_provider.get_channel_signer(false, channel_value_satoshis);
885 let pubkeys = holder_signer.pubkeys().clone();
887 if !their_features.supports_wumbo() && channel_value_satoshis > MAX_FUNDING_SATOSHIS_NO_WUMBO {
888 return Err(APIError::APIMisuseError{err: format!("funding_value must not exceed {}, it was {}", MAX_FUNDING_SATOSHIS_NO_WUMBO, channel_value_satoshis)});
890 if channel_value_satoshis >= TOTAL_BITCOIN_SUPPLY_SATOSHIS {
891 return Err(APIError::APIMisuseError{err: format!("funding_value must be smaller than the total bitcoin supply, it was {}", channel_value_satoshis)});
893 let channel_value_msat = channel_value_satoshis * 1000;
894 if push_msat > channel_value_msat {
895 return Err(APIError::APIMisuseError { err: format!("Push value ({}) was larger than channel_value ({})", push_msat, channel_value_msat) });
897 if holder_selected_contest_delay < BREAKDOWN_TIMEOUT {
898 return Err(APIError::APIMisuseError {err: format!("Configured with an unreasonable our_to_self_delay ({}) putting user funds at risks", holder_selected_contest_delay)});
900 let holder_selected_channel_reserve_satoshis = Channel::<Signer>::get_holder_selected_channel_reserve_satoshis(channel_value_satoshis);
901 if holder_selected_channel_reserve_satoshis < MIN_CHAN_DUST_LIMIT_SATOSHIS {
902 return Err(APIError::APIMisuseError { err: format!("Holder selected channel reserve below implemention limit dust_limit_satoshis {}", holder_selected_channel_reserve_satoshis) });
905 let feerate = fee_estimator.get_est_sat_per_1000_weight(ConfirmationTarget::Normal);
907 let value_to_self_msat = channel_value_satoshis * 1000 - push_msat;
908 let commitment_tx_fee = Self::commit_tx_fee_msat(feerate, MIN_AFFORDABLE_HTLC_COUNT, opt_anchors);
909 if value_to_self_msat < commitment_tx_fee {
910 return Err(APIError::APIMisuseError{ err: format!("Funding amount ({}) can't even pay fee for initial commitment transaction fee of {}.", value_to_self_msat / 1000, commitment_tx_fee / 1000) });
913 let mut secp_ctx = Secp256k1::new();
914 secp_ctx.seeded_randomize(&keys_provider.get_secure_random_bytes());
916 let shutdown_scriptpubkey = if config.channel_options.commit_upfront_shutdown_pubkey {
917 Some(keys_provider.get_shutdown_scriptpubkey())
920 if let Some(shutdown_scriptpubkey) = &shutdown_scriptpubkey {
921 if !shutdown_scriptpubkey.is_compatible(&their_features) {
922 return Err(APIError::IncompatibleShutdownScript { script: shutdown_scriptpubkey.clone() });
928 config: config.channel_options.clone(),
929 inbound_handshake_limits_override: Some(config.peer_channel_config_limits.clone()),
931 channel_id: keys_provider.get_secure_random_bytes(),
932 channel_state: ChannelState::OurInitSent as u32,
933 announcement_sigs_state: AnnouncementSigsState::NotSent,
935 channel_value_satoshis,
937 latest_monitor_update_id: 0,
940 shutdown_scriptpubkey,
941 destination_script: keys_provider.get_destination_script(),
943 cur_holder_commitment_transaction_number: INITIAL_COMMITMENT_NUMBER,
944 cur_counterparty_commitment_transaction_number: INITIAL_COMMITMENT_NUMBER,
947 pending_inbound_htlcs: Vec::new(),
948 pending_outbound_htlcs: Vec::new(),
949 holding_cell_htlc_updates: Vec::new(),
950 pending_update_fee: None,
951 holding_cell_update_fee: None,
952 next_holder_htlc_id: 0,
953 next_counterparty_htlc_id: 0,
954 update_time_counter: 1,
956 resend_order: RAACommitmentOrder::CommitmentFirst,
958 monitor_pending_funding_locked: false,
959 monitor_pending_revoke_and_ack: false,
960 monitor_pending_commitment_signed: false,
961 monitor_pending_forwards: Vec::new(),
962 monitor_pending_failures: Vec::new(),
963 monitor_pending_finalized_fulfills: Vec::new(),
965 #[cfg(debug_assertions)]
966 holder_max_commitment_tx_output: Mutex::new((channel_value_satoshis * 1000 - push_msat, push_msat)),
967 #[cfg(debug_assertions)]
968 counterparty_max_commitment_tx_output: Mutex::new((channel_value_satoshis * 1000 - push_msat, push_msat)),
970 last_sent_closing_fee: None,
971 pending_counterparty_closing_signed: None,
972 closing_fee_limits: None,
973 target_closing_feerate_sats_per_kw: None,
975 inbound_awaiting_accept: false,
977 funding_tx_confirmed_in: None,
978 funding_tx_confirmation_height: 0,
979 short_channel_id: None,
980 channel_creation_height: current_chain_height,
982 feerate_per_kw: feerate,
983 counterparty_dust_limit_satoshis: 0,
984 holder_dust_limit_satoshis: MIN_CHAN_DUST_LIMIT_SATOSHIS,
985 counterparty_max_htlc_value_in_flight_msat: 0,
986 holder_max_htlc_value_in_flight_msat: Self::get_holder_max_htlc_value_in_flight_msat(channel_value_satoshis, &config.own_channel_config),
987 counterparty_selected_channel_reserve_satoshis: None, // Filled in in accept_channel
988 holder_selected_channel_reserve_satoshis,
989 counterparty_htlc_minimum_msat: 0,
990 holder_htlc_minimum_msat: if config.own_channel_config.our_htlc_minimum_msat == 0 { 1 } else { config.own_channel_config.our_htlc_minimum_msat },
991 counterparty_max_accepted_htlcs: 0,
992 minimum_depth: None, // Filled in in accept_channel
994 counterparty_forwarding_info: None,
996 channel_transaction_parameters: ChannelTransactionParameters {
997 holder_pubkeys: pubkeys,
998 holder_selected_contest_delay: config.own_channel_config.our_to_self_delay,
999 is_outbound_from_holder: true,
1000 counterparty_parameters: None,
1001 funding_outpoint: None,
1002 opt_anchors: if opt_anchors { Some(()) } else { None },
1004 funding_transaction: None,
1006 counterparty_cur_commitment_point: None,
1007 counterparty_prev_commitment_point: None,
1008 counterparty_node_id,
1010 counterparty_shutdown_scriptpubkey: None,
1012 commitment_secrets: CounterpartyCommitmentSecrets::new(),
1014 channel_update_status: ChannelUpdateStatus::Enabled,
1015 closing_signed_in_flight: false,
1017 announcement_sigs: None,
1019 #[cfg(any(test, fuzzing))]
1020 next_local_commitment_tx_fee_info_cached: Mutex::new(None),
1021 #[cfg(any(test, fuzzing))]
1022 next_remote_commitment_tx_fee_info_cached: Mutex::new(None),
1024 workaround_lnd_bug_4006: None,
1026 latest_inbound_scid_alias: None,
1027 outbound_scid_alias,
1029 #[cfg(any(test, fuzzing))]
1030 historical_inbound_htlc_fulfills: HashSet::new(),
1032 channel_type: Self::get_initial_channel_type(&config),
1036 fn check_remote_fee<F: Deref>(fee_estimator: &F, feerate_per_kw: u32) -> Result<(), ChannelError>
1037 where F::Target: FeeEstimator
1039 // We only bound the fee updates on the upper side to prevent completely absurd feerates,
1040 // always accepting up to 25 sat/vByte or 10x our fee estimator's "High Priority" fee.
1041 // We generally don't care too much if they set the feerate to something very high, but it
1042 // could result in the channel being useless due to everything being dust.
1043 let upper_limit = cmp::max(250 * 25,
1044 fee_estimator.get_est_sat_per_1000_weight(ConfirmationTarget::HighPriority) as u64 * 10);
1045 if feerate_per_kw as u64 > upper_limit {
1046 return Err(ChannelError::Close(format!("Peer's feerate much too high. Actual: {}. Our expected upper limit: {}", feerate_per_kw, upper_limit)));
1048 let lower_limit = fee_estimator.get_est_sat_per_1000_weight(ConfirmationTarget::Background);
1049 // Some fee estimators round up to the next full sat/vbyte (ie 250 sats per kw), causing
1050 // occasional issues with feerate disagreements between an initiator that wants a feerate
1051 // of 1.1 sat/vbyte and a receiver that wants 1.1 rounded up to 2. Thus, we always add 250
1052 // sat/kw before the comparison here.
1053 if feerate_per_kw + 250 < lower_limit {
1054 return Err(ChannelError::Close(format!("Peer's feerate much too low. Actual: {}. Our expected lower limit: {} (- 250)", feerate_per_kw, lower_limit)));
1059 /// Creates a new channel from a remote sides' request for one.
1060 /// Assumes chain_hash has already been checked and corresponds with what we expect!
1061 pub fn new_from_req<K: Deref, F: Deref, L: Deref>(
1062 fee_estimator: &F, keys_provider: &K, counterparty_node_id: PublicKey, their_features: &InitFeatures,
1063 msg: &msgs::OpenChannel, user_id: u64, config: &UserConfig, current_chain_height: u32, logger: &L,
1064 outbound_scid_alias: u64
1065 ) -> Result<Channel<Signer>, ChannelError>
1066 where K::Target: KeysInterface<Signer = Signer>,
1067 F::Target: FeeEstimator,
1070 let opt_anchors = false; // TODO - should be based on features
1071 let announced_channel = if (msg.channel_flags & 1) == 1 { true } else { false };
1073 // First check the channel type is known, failing before we do anything else if we don't
1074 // support this channel type.
1075 let channel_type = if let Some(channel_type) = &msg.channel_type {
1076 if channel_type.supports_any_optional_bits() {
1077 return Err(ChannelError::Close("Channel Type field contained optional bits - this is not allowed".to_owned()));
1079 // We currently only allow two channel types, so write it all out here - we allow
1080 // `only_static_remote_key` in all contexts, and further allow
1081 // `static_remote_key|scid_privacy` if the channel is not publicly announced.
1082 let mut allowed_type = ChannelTypeFeatures::only_static_remote_key();
1083 if *channel_type != allowed_type {
1084 allowed_type.set_scid_privacy_required();
1085 if *channel_type != allowed_type {
1086 return Err(ChannelError::Close("Channel Type was not understood".to_owned()));
1088 if announced_channel {
1089 return Err(ChannelError::Close("SCID Alias/Privacy Channel Type cannot be set on a public channel".to_owned()));
1092 channel_type.clone()
1094 ChannelTypeFeatures::from_counterparty_init(&their_features)
1096 if !channel_type.supports_static_remote_key() {
1097 return Err(ChannelError::Close("Channel Type was not understood - we require static remote key".to_owned()));
1100 let holder_signer = keys_provider.get_channel_signer(true, msg.funding_satoshis);
1101 let pubkeys = holder_signer.pubkeys().clone();
1102 let counterparty_pubkeys = ChannelPublicKeys {
1103 funding_pubkey: msg.funding_pubkey,
1104 revocation_basepoint: msg.revocation_basepoint,
1105 payment_point: msg.payment_point,
1106 delayed_payment_basepoint: msg.delayed_payment_basepoint,
1107 htlc_basepoint: msg.htlc_basepoint
1109 let mut local_config = (*config).channel_options.clone();
1111 if config.own_channel_config.our_to_self_delay < BREAKDOWN_TIMEOUT {
1112 return Err(ChannelError::Close(format!("Configured with an unreasonable our_to_self_delay ({}) putting user funds at risks. It must be greater than {}", config.own_channel_config.our_to_self_delay, BREAKDOWN_TIMEOUT)));
1115 // Check sanity of message fields:
1116 if msg.funding_satoshis > config.peer_channel_config_limits.max_funding_satoshis {
1117 return Err(ChannelError::Close(format!("Per our config, funding must be at most {}. It was {}", config.peer_channel_config_limits.max_funding_satoshis, msg.funding_satoshis)));
1119 if msg.funding_satoshis >= TOTAL_BITCOIN_SUPPLY_SATOSHIS {
1120 return Err(ChannelError::Close(format!("Funding must be smaller than the total bitcoin supply. It was {}", msg.funding_satoshis)));
1122 if msg.channel_reserve_satoshis > msg.funding_satoshis {
1123 return Err(ChannelError::Close(format!("Bogus channel_reserve_satoshis ({}). Must be not greater than funding_satoshis: {}", msg.channel_reserve_satoshis, msg.funding_satoshis)));
1125 let full_channel_value_msat = (msg.funding_satoshis - msg.channel_reserve_satoshis) * 1000;
1126 if msg.push_msat > full_channel_value_msat {
1127 return Err(ChannelError::Close(format!("push_msat {} was larger than channel amount minus reserve ({})", msg.push_msat, full_channel_value_msat)));
1129 if msg.dust_limit_satoshis > msg.funding_satoshis {
1130 return Err(ChannelError::Close(format!("dust_limit_satoshis {} was larger than funding_satoshis {}. Peer never wants payout outputs?", msg.dust_limit_satoshis, msg.funding_satoshis)));
1132 if msg.htlc_minimum_msat >= full_channel_value_msat {
1133 return Err(ChannelError::Close(format!("Minimum htlc value ({}) was larger than full channel value ({})", msg.htlc_minimum_msat, full_channel_value_msat)));
1135 Channel::<Signer>::check_remote_fee(fee_estimator, msg.feerate_per_kw)?;
1137 let max_counterparty_selected_contest_delay = u16::min(config.peer_channel_config_limits.their_to_self_delay, MAX_LOCAL_BREAKDOWN_TIMEOUT);
1138 if msg.to_self_delay > max_counterparty_selected_contest_delay {
1139 return Err(ChannelError::Close(format!("They wanted our payments to be delayed by a needlessly long period. Upper limit: {}. Actual: {}", max_counterparty_selected_contest_delay, msg.to_self_delay)));
1141 if msg.max_accepted_htlcs < 1 {
1142 return Err(ChannelError::Close("0 max_accepted_htlcs makes for a useless channel".to_owned()));
1144 if msg.max_accepted_htlcs > MAX_HTLCS {
1145 return Err(ChannelError::Close(format!("max_accepted_htlcs was {}. It must not be larger than {}", msg.max_accepted_htlcs, MAX_HTLCS)));
1148 // Now check against optional parameters as set by config...
1149 if msg.funding_satoshis < config.peer_channel_config_limits.min_funding_satoshis {
1150 return Err(ChannelError::Close(format!("Funding satoshis ({}) is less than the user specified limit ({})", msg.funding_satoshis, config.peer_channel_config_limits.min_funding_satoshis)));
1152 if msg.htlc_minimum_msat > config.peer_channel_config_limits.max_htlc_minimum_msat {
1153 return Err(ChannelError::Close(format!("htlc_minimum_msat ({}) is higher than the user specified limit ({})", msg.htlc_minimum_msat, config.peer_channel_config_limits.max_htlc_minimum_msat)));
1155 if msg.max_htlc_value_in_flight_msat < config.peer_channel_config_limits.min_max_htlc_value_in_flight_msat {
1156 return Err(ChannelError::Close(format!("max_htlc_value_in_flight_msat ({}) is less than the user specified limit ({})", msg.max_htlc_value_in_flight_msat, config.peer_channel_config_limits.min_max_htlc_value_in_flight_msat)));
1158 if msg.channel_reserve_satoshis > config.peer_channel_config_limits.max_channel_reserve_satoshis {
1159 return Err(ChannelError::Close(format!("channel_reserve_satoshis ({}) is higher than the user specified limit ({})", msg.channel_reserve_satoshis, config.peer_channel_config_limits.max_channel_reserve_satoshis)));
1161 if msg.max_accepted_htlcs < config.peer_channel_config_limits.min_max_accepted_htlcs {
1162 return Err(ChannelError::Close(format!("max_accepted_htlcs ({}) is less than the user specified limit ({})", msg.max_accepted_htlcs, config.peer_channel_config_limits.min_max_accepted_htlcs)));
1164 if msg.dust_limit_satoshis < MIN_CHAN_DUST_LIMIT_SATOSHIS {
1165 return Err(ChannelError::Close(format!("dust_limit_satoshis ({}) is less than the implementation limit ({})", msg.dust_limit_satoshis, MIN_CHAN_DUST_LIMIT_SATOSHIS)));
1167 if msg.dust_limit_satoshis > MAX_CHAN_DUST_LIMIT_SATOSHIS {
1168 return Err(ChannelError::Close(format!("dust_limit_satoshis ({}) is greater than the implementation limit ({})", msg.dust_limit_satoshis, MAX_CHAN_DUST_LIMIT_SATOSHIS)));
1171 // Convert things into internal flags and prep our state:
1173 if config.peer_channel_config_limits.force_announced_channel_preference {
1174 if local_config.announced_channel != announced_channel {
1175 return Err(ChannelError::Close("Peer tried to open channel but their announcement preference is different from ours".to_owned()));
1178 // we either accept their preference or the preferences match
1179 local_config.announced_channel = announced_channel;
1181 let holder_selected_channel_reserve_satoshis = Channel::<Signer>::get_holder_selected_channel_reserve_satoshis(msg.funding_satoshis);
1182 if holder_selected_channel_reserve_satoshis < MIN_CHAN_DUST_LIMIT_SATOSHIS {
1183 return Err(ChannelError::Close(format!("Suitable channel reserve not found. remote_channel_reserve was ({}). dust_limit_satoshis is ({}).", holder_selected_channel_reserve_satoshis, MIN_CHAN_DUST_LIMIT_SATOSHIS)));
1185 if holder_selected_channel_reserve_satoshis * 1000 >= full_channel_value_msat {
1186 return Err(ChannelError::Close(format!("Suitable channel reserve not found. remote_channel_reserve was ({}). Channel value is ({} - {}).", holder_selected_channel_reserve_satoshis, full_channel_value_msat, msg.push_msat)));
1188 if msg.channel_reserve_satoshis < MIN_CHAN_DUST_LIMIT_SATOSHIS {
1189 log_debug!(logger, "channel_reserve_satoshis ({}) is smaller than our dust limit ({}). We can broadcast stale states without any risk, implying this channel is very insecure for our counterparty.",
1190 msg.channel_reserve_satoshis, MIN_CHAN_DUST_LIMIT_SATOSHIS);
1192 if holder_selected_channel_reserve_satoshis < msg.dust_limit_satoshis {
1193 return Err(ChannelError::Close(format!("Dust limit ({}) too high for the channel reserve we require the remote to keep ({})", msg.dust_limit_satoshis, holder_selected_channel_reserve_satoshis)));
1196 // check if the funder's amount for the initial commitment tx is sufficient
1197 // for full fee payment plus a few HTLCs to ensure the channel will be useful.
1198 let funders_amount_msat = msg.funding_satoshis * 1000 - msg.push_msat;
1199 let commitment_tx_fee = Self::commit_tx_fee_msat(msg.feerate_per_kw, MIN_AFFORDABLE_HTLC_COUNT, opt_anchors) / 1000;
1200 if funders_amount_msat / 1000 < commitment_tx_fee {
1201 return Err(ChannelError::Close(format!("Funding amount ({} sats) can't even pay fee for initial commitment transaction fee of {} sats.", funders_amount_msat / 1000, commitment_tx_fee)));
1204 let to_remote_satoshis = funders_amount_msat / 1000 - commitment_tx_fee;
1205 // While it's reasonable for us to not meet the channel reserve initially (if they don't
1206 // want to push much to us), our counterparty should always have more than our reserve.
1207 if to_remote_satoshis < holder_selected_channel_reserve_satoshis {
1208 return Err(ChannelError::Close("Insufficient funding amount for initial reserve".to_owned()));
1211 let counterparty_shutdown_scriptpubkey = if their_features.supports_upfront_shutdown_script() {
1212 match &msg.shutdown_scriptpubkey {
1213 &OptionalField::Present(ref script) => {
1214 // Peer is signaling upfront_shutdown and has opt-out with a 0-length script. We don't enforce anything
1215 if script.len() == 0 {
1218 if !script::is_bolt2_compliant(&script, their_features) {
1219 return Err(ChannelError::Close(format!("Peer is signaling upfront_shutdown but has provided an unacceptable scriptpubkey format: {}", script)))
1221 Some(script.clone())
1224 // Peer is signaling upfront shutdown but don't opt-out with correct mechanism (a.k.a 0-length script). Peer looks buggy, we fail the channel
1225 &OptionalField::Absent => {
1226 return Err(ChannelError::Close("Peer is signaling upfront_shutdown but we don't get any script. Use 0-length script to opt-out".to_owned()));
1231 let shutdown_scriptpubkey = if config.channel_options.commit_upfront_shutdown_pubkey {
1232 Some(keys_provider.get_shutdown_scriptpubkey())
1235 if let Some(shutdown_scriptpubkey) = &shutdown_scriptpubkey {
1236 if !shutdown_scriptpubkey.is_compatible(&their_features) {
1237 return Err(ChannelError::Close(format!("Provided a scriptpubkey format not accepted by peer: {}", shutdown_scriptpubkey)));
1241 let mut secp_ctx = Secp256k1::new();
1242 secp_ctx.seeded_randomize(&keys_provider.get_secure_random_bytes());
1244 let chan = Channel {
1246 config: local_config,
1247 inbound_handshake_limits_override: None,
1249 channel_id: msg.temporary_channel_id,
1250 channel_state: (ChannelState::OurInitSent as u32) | (ChannelState::TheirInitSent as u32),
1251 announcement_sigs_state: AnnouncementSigsState::NotSent,
1254 latest_monitor_update_id: 0,
1257 shutdown_scriptpubkey,
1258 destination_script: keys_provider.get_destination_script(),
1260 cur_holder_commitment_transaction_number: INITIAL_COMMITMENT_NUMBER,
1261 cur_counterparty_commitment_transaction_number: INITIAL_COMMITMENT_NUMBER,
1262 value_to_self_msat: msg.push_msat,
1264 pending_inbound_htlcs: Vec::new(),
1265 pending_outbound_htlcs: Vec::new(),
1266 holding_cell_htlc_updates: Vec::new(),
1267 pending_update_fee: None,
1268 holding_cell_update_fee: None,
1269 next_holder_htlc_id: 0,
1270 next_counterparty_htlc_id: 0,
1271 update_time_counter: 1,
1273 resend_order: RAACommitmentOrder::CommitmentFirst,
1275 monitor_pending_funding_locked: false,
1276 monitor_pending_revoke_and_ack: false,
1277 monitor_pending_commitment_signed: false,
1278 monitor_pending_forwards: Vec::new(),
1279 monitor_pending_failures: Vec::new(),
1280 monitor_pending_finalized_fulfills: Vec::new(),
1282 #[cfg(debug_assertions)]
1283 holder_max_commitment_tx_output: Mutex::new((msg.push_msat, msg.funding_satoshis * 1000 - msg.push_msat)),
1284 #[cfg(debug_assertions)]
1285 counterparty_max_commitment_tx_output: Mutex::new((msg.push_msat, msg.funding_satoshis * 1000 - msg.push_msat)),
1287 last_sent_closing_fee: None,
1288 pending_counterparty_closing_signed: None,
1289 closing_fee_limits: None,
1290 target_closing_feerate_sats_per_kw: None,
1292 inbound_awaiting_accept: true,
1294 funding_tx_confirmed_in: None,
1295 funding_tx_confirmation_height: 0,
1296 short_channel_id: None,
1297 channel_creation_height: current_chain_height,
1299 feerate_per_kw: msg.feerate_per_kw,
1300 channel_value_satoshis: msg.funding_satoshis,
1301 counterparty_dust_limit_satoshis: msg.dust_limit_satoshis,
1302 holder_dust_limit_satoshis: MIN_CHAN_DUST_LIMIT_SATOSHIS,
1303 counterparty_max_htlc_value_in_flight_msat: cmp::min(msg.max_htlc_value_in_flight_msat, msg.funding_satoshis * 1000),
1304 holder_max_htlc_value_in_flight_msat: Self::get_holder_max_htlc_value_in_flight_msat(msg.funding_satoshis, &config.own_channel_config),
1305 counterparty_selected_channel_reserve_satoshis: Some(msg.channel_reserve_satoshis),
1306 holder_selected_channel_reserve_satoshis,
1307 counterparty_htlc_minimum_msat: msg.htlc_minimum_msat,
1308 holder_htlc_minimum_msat: if config.own_channel_config.our_htlc_minimum_msat == 0 { 1 } else { config.own_channel_config.our_htlc_minimum_msat },
1309 counterparty_max_accepted_htlcs: msg.max_accepted_htlcs,
1310 minimum_depth: Some(config.own_channel_config.minimum_depth),
1312 counterparty_forwarding_info: None,
1314 channel_transaction_parameters: ChannelTransactionParameters {
1315 holder_pubkeys: pubkeys,
1316 holder_selected_contest_delay: config.own_channel_config.our_to_self_delay,
1317 is_outbound_from_holder: false,
1318 counterparty_parameters: Some(CounterpartyChannelTransactionParameters {
1319 selected_contest_delay: msg.to_self_delay,
1320 pubkeys: counterparty_pubkeys,
1322 funding_outpoint: None,
1323 opt_anchors: if opt_anchors { Some(()) } else { None },
1325 funding_transaction: None,
1327 counterparty_cur_commitment_point: Some(msg.first_per_commitment_point),
1328 counterparty_prev_commitment_point: None,
1329 counterparty_node_id,
1331 counterparty_shutdown_scriptpubkey,
1333 commitment_secrets: CounterpartyCommitmentSecrets::new(),
1335 channel_update_status: ChannelUpdateStatus::Enabled,
1336 closing_signed_in_flight: false,
1338 announcement_sigs: None,
1340 #[cfg(any(test, fuzzing))]
1341 next_local_commitment_tx_fee_info_cached: Mutex::new(None),
1342 #[cfg(any(test, fuzzing))]
1343 next_remote_commitment_tx_fee_info_cached: Mutex::new(None),
1345 workaround_lnd_bug_4006: None,
1347 latest_inbound_scid_alias: None,
1348 outbound_scid_alias,
1350 #[cfg(any(test, fuzzing))]
1351 historical_inbound_htlc_fulfills: HashSet::new(),
1359 /// Transaction nomenclature is somewhat confusing here as there are many different cases - a
1360 /// transaction is referred to as "a's transaction" implying that a will be able to broadcast
1361 /// the transaction. Thus, b will generally be sending a signature over such a transaction to
1362 /// a, and a can revoke the transaction by providing b the relevant per_commitment_secret. As
1363 /// such, a transaction is generally the result of b increasing the amount paid to a (or adding
1365 /// @local is used only to convert relevant internal structures which refer to remote vs local
1366 /// to decide value of outputs and direction of HTLCs.
1367 /// @generated_by_local is used to determine *which* HTLCs to include - noting that the HTLC
1368 /// state may indicate that one peer has informed the other that they'd like to add an HTLC but
1369 /// have not yet committed it. Such HTLCs will only be included in transactions which are being
1370 /// generated by the peer which proposed adding the HTLCs, and thus we need to understand both
1371 /// which peer generated this transaction and "to whom" this transaction flows.
1373 fn build_commitment_transaction<L: Deref>(&self, commitment_number: u64, keys: &TxCreationKeys, local: bool, generated_by_local: bool, logger: &L) -> CommitmentStats
1374 where L::Target: Logger
1376 let mut included_dust_htlcs: Vec<(HTLCOutputInCommitment, Option<&HTLCSource>)> = Vec::new();
1377 let num_htlcs = self.pending_inbound_htlcs.len() + self.pending_outbound_htlcs.len();
1378 let mut included_non_dust_htlcs: Vec<(HTLCOutputInCommitment, Option<&HTLCSource>)> = Vec::with_capacity(num_htlcs);
1380 let broadcaster_dust_limit_satoshis = if local { self.holder_dust_limit_satoshis } else { self.counterparty_dust_limit_satoshis };
1381 let mut remote_htlc_total_msat = 0;
1382 let mut local_htlc_total_msat = 0;
1383 let mut value_to_self_msat_offset = 0;
1385 let mut feerate_per_kw = self.feerate_per_kw;
1386 if let Some((feerate, update_state)) = self.pending_update_fee {
1387 if match update_state {
1388 // Note that these match the inclusion criteria when scanning
1389 // pending_inbound_htlcs below.
1390 FeeUpdateState::RemoteAnnounced => { debug_assert!(!self.is_outbound()); !generated_by_local },
1391 FeeUpdateState::AwaitingRemoteRevokeToAnnounce => { debug_assert!(!self.is_outbound()); !generated_by_local },
1392 FeeUpdateState::Outbound => { assert!(self.is_outbound()); generated_by_local },
1394 feerate_per_kw = feerate;
1398 log_trace!(logger, "Building commitment transaction number {} (really {} xor {}) for channel {} for {}, generated by {} with fee {}...",
1399 commitment_number, (INITIAL_COMMITMENT_NUMBER - commitment_number),
1400 get_commitment_transaction_number_obscure_factor(&self.get_holder_pubkeys().payment_point, &self.get_counterparty_pubkeys().payment_point, self.is_outbound()),
1401 log_bytes!(self.channel_id), if local { "us" } else { "remote" }, if generated_by_local { "us" } else { "remote" }, feerate_per_kw);
1403 macro_rules! get_htlc_in_commitment {
1404 ($htlc: expr, $offered: expr) => {
1405 HTLCOutputInCommitment {
1407 amount_msat: $htlc.amount_msat,
1408 cltv_expiry: $htlc.cltv_expiry,
1409 payment_hash: $htlc.payment_hash,
1410 transaction_output_index: None
1415 macro_rules! add_htlc_output {
1416 ($htlc: expr, $outbound: expr, $source: expr, $state_name: expr) => {
1417 if $outbound == local { // "offered HTLC output"
1418 let htlc_in_tx = get_htlc_in_commitment!($htlc, true);
1419 if $htlc.amount_msat / 1000 >= broadcaster_dust_limit_satoshis + (feerate_per_kw as u64 * htlc_timeout_tx_weight(self.opt_anchors()) / 1000) {
1420 log_trace!(logger, " ...including {} {} HTLC {} (hash {}) with value {}", if $outbound { "outbound" } else { "inbound" }, $state_name, $htlc.htlc_id, log_bytes!($htlc.payment_hash.0), $htlc.amount_msat);
1421 included_non_dust_htlcs.push((htlc_in_tx, $source));
1423 log_trace!(logger, " ...including {} {} dust HTLC {} (hash {}) with value {} due to dust limit", if $outbound { "outbound" } else { "inbound" }, $state_name, $htlc.htlc_id, log_bytes!($htlc.payment_hash.0), $htlc.amount_msat);
1424 included_dust_htlcs.push((htlc_in_tx, $source));
1427 let htlc_in_tx = get_htlc_in_commitment!($htlc, false);
1428 if $htlc.amount_msat / 1000 >= broadcaster_dust_limit_satoshis + (feerate_per_kw as u64 * htlc_success_tx_weight(self.opt_anchors()) / 1000) {
1429 log_trace!(logger, " ...including {} {} HTLC {} (hash {}) with value {}", if $outbound { "outbound" } else { "inbound" }, $state_name, $htlc.htlc_id, log_bytes!($htlc.payment_hash.0), $htlc.amount_msat);
1430 included_non_dust_htlcs.push((htlc_in_tx, $source));
1432 log_trace!(logger, " ...including {} {} dust HTLC {} (hash {}) with value {}", if $outbound { "outbound" } else { "inbound" }, $state_name, $htlc.htlc_id, log_bytes!($htlc.payment_hash.0), $htlc.amount_msat);
1433 included_dust_htlcs.push((htlc_in_tx, $source));
1439 for ref htlc in self.pending_inbound_htlcs.iter() {
1440 let (include, state_name) = match htlc.state {
1441 InboundHTLCState::RemoteAnnounced(_) => (!generated_by_local, "RemoteAnnounced"),
1442 InboundHTLCState::AwaitingRemoteRevokeToAnnounce(_) => (!generated_by_local, "AwaitingRemoteRevokeToAnnounce"),
1443 InboundHTLCState::AwaitingAnnouncedRemoteRevoke(_) => (true, "AwaitingAnnouncedRemoteRevoke"),
1444 InboundHTLCState::Committed => (true, "Committed"),
1445 InboundHTLCState::LocalRemoved(_) => (!generated_by_local, "LocalRemoved"),
1449 add_htlc_output!(htlc, false, None, state_name);
1450 remote_htlc_total_msat += htlc.amount_msat;
1452 log_trace!(logger, " ...not including inbound HTLC {} (hash {}) with value {} due to state ({})", htlc.htlc_id, log_bytes!(htlc.payment_hash.0), htlc.amount_msat, state_name);
1454 &InboundHTLCState::LocalRemoved(ref reason) => {
1455 if generated_by_local {
1456 if let &InboundHTLCRemovalReason::Fulfill(_) = reason {
1457 value_to_self_msat_offset += htlc.amount_msat as i64;
1466 let mut preimages: Vec<PaymentPreimage> = Vec::new();
1468 for ref htlc in self.pending_outbound_htlcs.iter() {
1469 let (include, state_name) = match htlc.state {
1470 OutboundHTLCState::LocalAnnounced(_) => (generated_by_local, "LocalAnnounced"),
1471 OutboundHTLCState::Committed => (true, "Committed"),
1472 OutboundHTLCState::RemoteRemoved(_) => (generated_by_local, "RemoteRemoved"),
1473 OutboundHTLCState::AwaitingRemoteRevokeToRemove(_) => (generated_by_local, "AwaitingRemoteRevokeToRemove"),
1474 OutboundHTLCState::AwaitingRemovedRemoteRevoke(_) => (false, "AwaitingRemovedRemoteRevoke"),
1477 let preimage_opt = match htlc.state {
1478 OutboundHTLCState::RemoteRemoved(OutboundHTLCOutcome::Success(p)) => p,
1479 OutboundHTLCState::AwaitingRemoteRevokeToRemove(OutboundHTLCOutcome::Success(p)) => p,
1480 OutboundHTLCState::AwaitingRemovedRemoteRevoke(OutboundHTLCOutcome::Success(p)) => p,
1484 if let Some(preimage) = preimage_opt {
1485 preimages.push(preimage);
1489 add_htlc_output!(htlc, true, Some(&htlc.source), state_name);
1490 local_htlc_total_msat += htlc.amount_msat;
1492 log_trace!(logger, " ...not including outbound HTLC {} (hash {}) with value {} due to state ({})", htlc.htlc_id, log_bytes!(htlc.payment_hash.0), htlc.amount_msat, state_name);
1494 OutboundHTLCState::AwaitingRemoteRevokeToRemove(OutboundHTLCOutcome::Success(_))|OutboundHTLCState::AwaitingRemovedRemoteRevoke(OutboundHTLCOutcome::Success(_)) => {
1495 value_to_self_msat_offset -= htlc.amount_msat as i64;
1497 OutboundHTLCState::RemoteRemoved(OutboundHTLCOutcome::Success(_)) => {
1498 if !generated_by_local {
1499 value_to_self_msat_offset -= htlc.amount_msat as i64;
1507 let mut value_to_self_msat: i64 = (self.value_to_self_msat - local_htlc_total_msat) as i64 + value_to_self_msat_offset;
1508 assert!(value_to_self_msat >= 0);
1509 // Note that in case they have several just-awaiting-last-RAA fulfills in-progress (ie
1510 // AwaitingRemoteRevokeToRemove or AwaitingRemovedRemoteRevoke) we may have allowed them to
1511 // "violate" their reserve value by couting those against it. Thus, we have to convert
1512 // everything to i64 before subtracting as otherwise we can overflow.
1513 let mut value_to_remote_msat: i64 = (self.channel_value_satoshis * 1000) as i64 - (self.value_to_self_msat as i64) - (remote_htlc_total_msat as i64) - value_to_self_msat_offset;
1514 assert!(value_to_remote_msat >= 0);
1516 #[cfg(debug_assertions)]
1518 // Make sure that the to_self/to_remote is always either past the appropriate
1519 // channel_reserve *or* it is making progress towards it.
1520 let mut broadcaster_max_commitment_tx_output = if generated_by_local {
1521 self.holder_max_commitment_tx_output.lock().unwrap()
1523 self.counterparty_max_commitment_tx_output.lock().unwrap()
1525 debug_assert!(broadcaster_max_commitment_tx_output.0 <= value_to_self_msat as u64 || value_to_self_msat / 1000 >= self.counterparty_selected_channel_reserve_satoshis.unwrap() as i64);
1526 broadcaster_max_commitment_tx_output.0 = cmp::max(broadcaster_max_commitment_tx_output.0, value_to_self_msat as u64);
1527 debug_assert!(broadcaster_max_commitment_tx_output.1 <= value_to_remote_msat as u64 || value_to_remote_msat / 1000 >= self.holder_selected_channel_reserve_satoshis as i64);
1528 broadcaster_max_commitment_tx_output.1 = cmp::max(broadcaster_max_commitment_tx_output.1, value_to_remote_msat as u64);
1531 let total_fee_sat = Channel::<Signer>::commit_tx_fee_sat(feerate_per_kw, included_non_dust_htlcs.len(), self.channel_transaction_parameters.opt_anchors.is_some());
1532 let anchors_val = if self.channel_transaction_parameters.opt_anchors.is_some() { ANCHOR_OUTPUT_VALUE_SATOSHI * 2 } else { 0 } as i64;
1533 let (value_to_self, value_to_remote) = if self.is_outbound() {
1534 (value_to_self_msat / 1000 - anchors_val - total_fee_sat as i64, value_to_remote_msat / 1000)
1536 (value_to_self_msat / 1000, value_to_remote_msat / 1000 - anchors_val - total_fee_sat as i64)
1539 let mut value_to_a = if local { value_to_self } else { value_to_remote };
1540 let mut value_to_b = if local { value_to_remote } else { value_to_self };
1541 let (funding_pubkey_a, funding_pubkey_b) = if local {
1542 (self.get_holder_pubkeys().funding_pubkey, self.get_counterparty_pubkeys().funding_pubkey)
1544 (self.get_counterparty_pubkeys().funding_pubkey, self.get_holder_pubkeys().funding_pubkey)
1547 if value_to_a >= (broadcaster_dust_limit_satoshis as i64) {
1548 log_trace!(logger, " ...including {} output with value {}", if local { "to_local" } else { "to_remote" }, value_to_a);
1553 if value_to_b >= (broadcaster_dust_limit_satoshis as i64) {
1554 log_trace!(logger, " ...including {} output with value {}", if local { "to_remote" } else { "to_local" }, value_to_b);
1559 let num_nondust_htlcs = included_non_dust_htlcs.len();
1561 let channel_parameters =
1562 if local { self.channel_transaction_parameters.as_holder_broadcastable() }
1563 else { self.channel_transaction_parameters.as_counterparty_broadcastable() };
1564 let tx = CommitmentTransaction::new_with_auxiliary_htlc_data(commitment_number,
1567 self.channel_transaction_parameters.opt_anchors.is_some(),
1572 &mut included_non_dust_htlcs,
1575 let mut htlcs_included = included_non_dust_htlcs;
1576 // The unwrap is safe, because all non-dust HTLCs have been assigned an output index
1577 htlcs_included.sort_unstable_by_key(|h| h.0.transaction_output_index.unwrap());
1578 htlcs_included.append(&mut included_dust_htlcs);
1580 // For the stats, trimmed-to-0 the value in msats accordingly
1581 value_to_self_msat = if (value_to_self_msat * 1000) < broadcaster_dust_limit_satoshis as i64 { 0 } else { value_to_self_msat };
1582 value_to_remote_msat = if (value_to_remote_msat * 1000) < broadcaster_dust_limit_satoshis as i64 { 0 } else { value_to_remote_msat };
1590 local_balance_msat: value_to_self_msat as u64,
1591 remote_balance_msat: value_to_remote_msat as u64,
1597 fn get_closing_scriptpubkey(&self) -> Script {
1598 // The shutdown scriptpubkey is set on channel opening when option_upfront_shutdown_script
1599 // is signaled. Otherwise, it is set when sending a shutdown message. Calling this method
1600 // outside of those situations will fail.
1601 self.shutdown_scriptpubkey.clone().unwrap().into_inner()
1605 fn get_closing_transaction_weight(&self, a_scriptpubkey: Option<&Script>, b_scriptpubkey: Option<&Script>) -> u64 {
1610 1 + // script length (0)
1614 )*4 + // * 4 for non-witness parts
1615 2 + // witness marker and flag
1616 1 + // witness element count
1617 4 + // 4 element lengths (2 sigs, multisig dummy, and witness script)
1618 self.get_funding_redeemscript().len() as u64 + // funding witness script
1619 2*(1 + 71); // two signatures + sighash type flags
1620 if let Some(spk) = a_scriptpubkey {
1621 ret += ((8+1) + // output values and script length
1622 spk.len() as u64) * 4; // scriptpubkey and witness multiplier
1624 if let Some(spk) = b_scriptpubkey {
1625 ret += ((8+1) + // output values and script length
1626 spk.len() as u64) * 4; // scriptpubkey and witness multiplier
1632 fn build_closing_transaction(&self, proposed_total_fee_satoshis: u64, skip_remote_output: bool) -> (ClosingTransaction, u64) {
1633 assert!(self.pending_inbound_htlcs.is_empty());
1634 assert!(self.pending_outbound_htlcs.is_empty());
1635 assert!(self.pending_update_fee.is_none());
1637 let mut total_fee_satoshis = proposed_total_fee_satoshis;
1638 let mut value_to_holder: i64 = (self.value_to_self_msat as i64) / 1000 - if self.is_outbound() { total_fee_satoshis as i64 } else { 0 };
1639 let mut value_to_counterparty: i64 = ((self.channel_value_satoshis * 1000 - self.value_to_self_msat) as i64 / 1000) - if self.is_outbound() { 0 } else { total_fee_satoshis as i64 };
1641 if value_to_holder < 0 {
1642 assert!(self.is_outbound());
1643 total_fee_satoshis += (-value_to_holder) as u64;
1644 } else if value_to_counterparty < 0 {
1645 assert!(!self.is_outbound());
1646 total_fee_satoshis += (-value_to_counterparty) as u64;
1649 if skip_remote_output || value_to_counterparty as u64 <= self.holder_dust_limit_satoshis {
1650 value_to_counterparty = 0;
1653 if value_to_holder as u64 <= self.holder_dust_limit_satoshis {
1654 value_to_holder = 0;
1657 assert!(self.shutdown_scriptpubkey.is_some());
1658 let holder_shutdown_script = self.get_closing_scriptpubkey();
1659 let counterparty_shutdown_script = self.counterparty_shutdown_scriptpubkey.clone().unwrap();
1660 let funding_outpoint = self.funding_outpoint().into_bitcoin_outpoint();
1662 let closing_transaction = ClosingTransaction::new(value_to_holder as u64, value_to_counterparty as u64, holder_shutdown_script, counterparty_shutdown_script, funding_outpoint);
1663 (closing_transaction, total_fee_satoshis)
1666 fn funding_outpoint(&self) -> OutPoint {
1667 self.channel_transaction_parameters.funding_outpoint.unwrap()
1671 /// Creates a set of keys for build_commitment_transaction to generate a transaction which our
1672 /// counterparty will sign (ie DO NOT send signatures over a transaction created by this to
1673 /// our counterparty!)
1674 /// The result is a transaction which we can revoke broadcastership of (ie a "local" transaction)
1675 /// TODO Some magic rust shit to compile-time check this?
1676 fn build_holder_transaction_keys(&self, commitment_number: u64) -> Result<TxCreationKeys, ChannelError> {
1677 let per_commitment_point = self.holder_signer.get_per_commitment_point(commitment_number, &self.secp_ctx);
1678 let delayed_payment_base = &self.get_holder_pubkeys().delayed_payment_basepoint;
1679 let htlc_basepoint = &self.get_holder_pubkeys().htlc_basepoint;
1680 let counterparty_pubkeys = self.get_counterparty_pubkeys();
1682 Ok(secp_check!(TxCreationKeys::derive_new(&self.secp_ctx, &per_commitment_point, delayed_payment_base, htlc_basepoint, &counterparty_pubkeys.revocation_basepoint, &counterparty_pubkeys.htlc_basepoint), "Local tx keys generation got bogus keys".to_owned()))
1686 /// Creates a set of keys for build_commitment_transaction to generate a transaction which we
1687 /// will sign and send to our counterparty.
1688 /// If an Err is returned, it is a ChannelError::Close (for get_outbound_funding_created)
1689 fn build_remote_transaction_keys(&self) -> Result<TxCreationKeys, ChannelError> {
1690 //TODO: Ensure that the payment_key derived here ends up in the library users' wallet as we
1691 //may see payments to it!
1692 let revocation_basepoint = &self.get_holder_pubkeys().revocation_basepoint;
1693 let htlc_basepoint = &self.get_holder_pubkeys().htlc_basepoint;
1694 let counterparty_pubkeys = self.get_counterparty_pubkeys();
1696 Ok(secp_check!(TxCreationKeys::derive_new(&self.secp_ctx, &self.counterparty_cur_commitment_point.unwrap(), &counterparty_pubkeys.delayed_payment_basepoint, &counterparty_pubkeys.htlc_basepoint, revocation_basepoint, htlc_basepoint), "Remote tx keys generation got bogus keys".to_owned()))
1699 /// Gets the redeemscript for the funding transaction output (ie the funding transaction output
1700 /// pays to get_funding_redeemscript().to_v0_p2wsh()).
1701 /// Panics if called before accept_channel/new_from_req
1702 pub fn get_funding_redeemscript(&self) -> Script {
1703 make_funding_redeemscript(&self.get_holder_pubkeys().funding_pubkey, self.counterparty_funding_pubkey())
1706 fn get_update_fulfill_htlc<L: Deref>(&mut self, htlc_id_arg: u64, payment_preimage_arg: PaymentPreimage, logger: &L) -> UpdateFulfillFetch where L::Target: Logger {
1707 // Either ChannelFunded got set (which means it won't be unset) or there is no way any
1708 // caller thought we could have something claimed (cause we wouldn't have accepted in an
1709 // incoming HTLC anyway). If we got to ShutdownComplete, callers aren't allowed to call us,
1711 if (self.channel_state & (ChannelState::ChannelFunded as u32)) != (ChannelState::ChannelFunded as u32) {
1712 panic!("Was asked to fulfill an HTLC when channel was not in an operational state");
1714 assert_eq!(self.channel_state & ChannelState::ShutdownComplete as u32, 0);
1716 let payment_hash_calc = PaymentHash(Sha256::hash(&payment_preimage_arg.0[..]).into_inner());
1718 // ChannelManager may generate duplicate claims/fails due to HTLC update events from
1719 // on-chain ChannelsMonitors during block rescan. Ideally we'd figure out a way to drop
1720 // these, but for now we just have to treat them as normal.
1722 let mut pending_idx = core::usize::MAX;
1723 let mut htlc_value_msat = 0;
1724 for (idx, htlc) in self.pending_inbound_htlcs.iter().enumerate() {
1725 if htlc.htlc_id == htlc_id_arg {
1726 assert_eq!(htlc.payment_hash, payment_hash_calc);
1728 InboundHTLCState::Committed => {},
1729 InboundHTLCState::LocalRemoved(ref reason) => {
1730 if let &InboundHTLCRemovalReason::Fulfill(_) = reason {
1732 log_warn!(logger, "Have preimage and want to fulfill HTLC with payment hash {} we already failed against channel {}", log_bytes!(htlc.payment_hash.0), log_bytes!(self.channel_id()));
1733 debug_assert!(false, "Tried to fulfill an HTLC that was already failed");
1735 return UpdateFulfillFetch::DuplicateClaim {};
1738 debug_assert!(false, "Have an inbound HTLC we tried to claim before it was fully committed to");
1739 // Don't return in release mode here so that we can update channel_monitor
1743 htlc_value_msat = htlc.amount_msat;
1747 if pending_idx == core::usize::MAX {
1748 #[cfg(any(test, fuzzing))]
1749 // If we failed to find an HTLC to fulfill, make sure it was previously fulfilled and
1750 // this is simply a duplicate claim, not previously failed and we lost funds.
1751 debug_assert!(self.historical_inbound_htlc_fulfills.contains(&htlc_id_arg));
1752 return UpdateFulfillFetch::DuplicateClaim {};
1755 // Now update local state:
1757 // We have to put the payment_preimage in the channel_monitor right away here to ensure we
1758 // can claim it even if the channel hits the chain before we see their next commitment.
1759 self.latest_monitor_update_id += 1;
1760 let monitor_update = ChannelMonitorUpdate {
1761 update_id: self.latest_monitor_update_id,
1762 updates: vec![ChannelMonitorUpdateStep::PaymentPreimage {
1763 payment_preimage: payment_preimage_arg.clone(),
1767 if (self.channel_state & (ChannelState::AwaitingRemoteRevoke as u32 | ChannelState::PeerDisconnected as u32 | ChannelState::MonitorUpdateFailed as u32)) != 0 {
1768 for pending_update in self.holding_cell_htlc_updates.iter() {
1769 match pending_update {
1770 &HTLCUpdateAwaitingACK::ClaimHTLC { htlc_id, .. } => {
1771 if htlc_id_arg == htlc_id {
1772 // Make sure we don't leave latest_monitor_update_id incremented here:
1773 self.latest_monitor_update_id -= 1;
1774 #[cfg(any(test, fuzzing))]
1775 debug_assert!(self.historical_inbound_htlc_fulfills.contains(&htlc_id_arg));
1776 return UpdateFulfillFetch::DuplicateClaim {};
1779 &HTLCUpdateAwaitingACK::FailHTLC { htlc_id, .. } => {
1780 if htlc_id_arg == htlc_id {
1781 log_warn!(logger, "Have preimage and want to fulfill HTLC with pending failure against channel {}", log_bytes!(self.channel_id()));
1782 // TODO: We may actually be able to switch to a fulfill here, though its
1783 // rare enough it may not be worth the complexity burden.
1784 debug_assert!(false, "Tried to fulfill an HTLC that was already failed");
1785 return UpdateFulfillFetch::NewClaim { monitor_update, htlc_value_msat, msg: None };
1791 log_trace!(logger, "Adding HTLC claim to holding_cell in channel {}! Current state: {}", log_bytes!(self.channel_id()), self.channel_state);
1792 self.holding_cell_htlc_updates.push(HTLCUpdateAwaitingACK::ClaimHTLC {
1793 payment_preimage: payment_preimage_arg, htlc_id: htlc_id_arg,
1795 #[cfg(any(test, fuzzing))]
1796 self.historical_inbound_htlc_fulfills.insert(htlc_id_arg);
1797 return UpdateFulfillFetch::NewClaim { monitor_update, htlc_value_msat, msg: None };
1799 #[cfg(any(test, fuzzing))]
1800 self.historical_inbound_htlc_fulfills.insert(htlc_id_arg);
1803 let htlc = &mut self.pending_inbound_htlcs[pending_idx];
1804 if let InboundHTLCState::Committed = htlc.state {
1806 debug_assert!(false, "Have an inbound HTLC we tried to claim before it was fully committed to");
1807 return UpdateFulfillFetch::NewClaim { monitor_update, htlc_value_msat, msg: None };
1809 log_trace!(logger, "Upgrading HTLC {} to LocalRemoved with a Fulfill in channel {}!", log_bytes!(htlc.payment_hash.0), log_bytes!(self.channel_id));
1810 htlc.state = InboundHTLCState::LocalRemoved(InboundHTLCRemovalReason::Fulfill(payment_preimage_arg.clone()));
1813 UpdateFulfillFetch::NewClaim {
1816 msg: Some(msgs::UpdateFulfillHTLC {
1817 channel_id: self.channel_id(),
1818 htlc_id: htlc_id_arg,
1819 payment_preimage: payment_preimage_arg,
1824 pub fn get_update_fulfill_htlc_and_commit<L: Deref>(&mut self, htlc_id: u64, payment_preimage: PaymentPreimage, logger: &L) -> Result<UpdateFulfillCommitFetch, (ChannelError, ChannelMonitorUpdate)> where L::Target: Logger {
1825 match self.get_update_fulfill_htlc(htlc_id, payment_preimage, logger) {
1826 UpdateFulfillFetch::NewClaim { mut monitor_update, htlc_value_msat, msg: Some(update_fulfill_htlc) } => {
1827 let (commitment, mut additional_update) = match self.send_commitment_no_status_check(logger) {
1828 Err(e) => return Err((e, monitor_update)),
1831 // send_commitment_no_status_check may bump latest_monitor_id but we want them to be
1832 // strictly increasing by one, so decrement it here.
1833 self.latest_monitor_update_id = monitor_update.update_id;
1834 monitor_update.updates.append(&mut additional_update.updates);
1835 Ok(UpdateFulfillCommitFetch::NewClaim { monitor_update, htlc_value_msat, msgs: Some((update_fulfill_htlc, commitment)) })
1837 UpdateFulfillFetch::NewClaim { monitor_update, htlc_value_msat, msg: None } =>
1838 Ok(UpdateFulfillCommitFetch::NewClaim { monitor_update, htlc_value_msat, msgs: None }),
1839 UpdateFulfillFetch::DuplicateClaim {} => Ok(UpdateFulfillCommitFetch::DuplicateClaim {}),
1843 /// We can only have one resolution per HTLC. In some cases around reconnect, we may fulfill
1844 /// an HTLC more than once or fulfill once and then attempt to fail after reconnect. We cannot,
1845 /// however, fail more than once as we wait for an upstream failure to be irrevocably committed
1846 /// before we fail backwards.
1847 /// If we do fail twice, we debug_assert!(false) and return Ok(None). Thus, will always return
1848 /// Ok(_) if debug assertions are turned on or preconditions are met.
1849 pub fn get_update_fail_htlc<L: Deref>(&mut self, htlc_id_arg: u64, err_packet: msgs::OnionErrorPacket, logger: &L) -> Result<Option<msgs::UpdateFailHTLC>, ChannelError> where L::Target: Logger {
1850 if (self.channel_state & (ChannelState::ChannelFunded as u32)) != (ChannelState::ChannelFunded as u32) {
1851 panic!("Was asked to fail an HTLC when channel was not in an operational state");
1853 assert_eq!(self.channel_state & ChannelState::ShutdownComplete as u32, 0);
1855 // ChannelManager may generate duplicate claims/fails due to HTLC update events from
1856 // on-chain ChannelsMonitors during block rescan. Ideally we'd figure out a way to drop
1857 // these, but for now we just have to treat them as normal.
1859 let mut pending_idx = core::usize::MAX;
1860 for (idx, htlc) in self.pending_inbound_htlcs.iter().enumerate() {
1861 if htlc.htlc_id == htlc_id_arg {
1863 InboundHTLCState::Committed => {},
1864 InboundHTLCState::LocalRemoved(ref reason) => {
1865 if let &InboundHTLCRemovalReason::Fulfill(_) = reason {
1867 debug_assert!(false, "Tried to fail an HTLC that was already failed");
1872 debug_assert!(false, "Have an inbound HTLC we tried to claim before it was fully committed to");
1873 return Err(ChannelError::Ignore(format!("Unable to find a pending HTLC which matched the given HTLC ID ({})", htlc.htlc_id)));
1879 if pending_idx == core::usize::MAX {
1880 #[cfg(any(test, fuzzing))]
1881 // If we failed to find an HTLC to fail, make sure it was previously fulfilled and this
1882 // is simply a duplicate fail, not previously failed and we failed-back too early.
1883 debug_assert!(self.historical_inbound_htlc_fulfills.contains(&htlc_id_arg));
1887 // Now update local state:
1888 if (self.channel_state & (ChannelState::AwaitingRemoteRevoke as u32 | ChannelState::PeerDisconnected as u32 | ChannelState::MonitorUpdateFailed as u32)) != 0 {
1889 for pending_update in self.holding_cell_htlc_updates.iter() {
1890 match pending_update {
1891 &HTLCUpdateAwaitingACK::ClaimHTLC { htlc_id, .. } => {
1892 if htlc_id_arg == htlc_id {
1893 #[cfg(any(test, fuzzing))]
1894 debug_assert!(self.historical_inbound_htlc_fulfills.contains(&htlc_id_arg));
1898 &HTLCUpdateAwaitingACK::FailHTLC { htlc_id, .. } => {
1899 if htlc_id_arg == htlc_id {
1900 debug_assert!(false, "Tried to fail an HTLC that was already failed");
1901 return Err(ChannelError::Ignore("Unable to find a pending HTLC which matched the given HTLC ID".to_owned()));
1907 log_trace!(logger, "Placing failure for HTLC ID {} in holding cell in channel {}.", htlc_id_arg, log_bytes!(self.channel_id()));
1908 self.holding_cell_htlc_updates.push(HTLCUpdateAwaitingACK::FailHTLC {
1909 htlc_id: htlc_id_arg,
1915 log_trace!(logger, "Failing HTLC ID {} back with a update_fail_htlc message in channel {}.", htlc_id_arg, log_bytes!(self.channel_id()));
1917 let htlc = &mut self.pending_inbound_htlcs[pending_idx];
1918 htlc.state = InboundHTLCState::LocalRemoved(InboundHTLCRemovalReason::FailRelay(err_packet.clone()));
1921 Ok(Some(msgs::UpdateFailHTLC {
1922 channel_id: self.channel_id(),
1923 htlc_id: htlc_id_arg,
1928 // Message handlers:
1930 pub fn accept_channel(&mut self, msg: &msgs::AcceptChannel, default_limits: &ChannelHandshakeLimits, their_features: &InitFeatures) -> Result<(), ChannelError> {
1931 let peer_limits = if let Some(ref limits) = self.inbound_handshake_limits_override { limits } else { default_limits };
1933 // Check sanity of message fields:
1934 if !self.is_outbound() {
1935 return Err(ChannelError::Close("Got an accept_channel message from an inbound peer".to_owned()));
1937 if self.channel_state != ChannelState::OurInitSent as u32 {
1938 return Err(ChannelError::Close("Got an accept_channel message at a strange time".to_owned()));
1940 if msg.dust_limit_satoshis > 21000000 * 100000000 {
1941 return Err(ChannelError::Close(format!("Peer never wants payout outputs? dust_limit_satoshis was {}", msg.dust_limit_satoshis)));
1943 if msg.channel_reserve_satoshis > self.channel_value_satoshis {
1944 return Err(ChannelError::Close(format!("Bogus channel_reserve_satoshis ({}). Must not be greater than ({})", msg.channel_reserve_satoshis, self.channel_value_satoshis)));
1946 if msg.dust_limit_satoshis > self.holder_selected_channel_reserve_satoshis {
1947 return Err(ChannelError::Close(format!("Dust limit ({}) is bigger than our channel reserve ({})", msg.dust_limit_satoshis, self.holder_selected_channel_reserve_satoshis)));
1949 if msg.channel_reserve_satoshis > self.channel_value_satoshis - self.holder_selected_channel_reserve_satoshis {
1950 return Err(ChannelError::Close(format!("Bogus channel_reserve_satoshis ({}). Must not be greater than channel value minus our reserve ({})",
1951 msg.channel_reserve_satoshis, self.channel_value_satoshis - self.holder_selected_channel_reserve_satoshis)));
1953 let full_channel_value_msat = (self.channel_value_satoshis - msg.channel_reserve_satoshis) * 1000;
1954 if msg.htlc_minimum_msat >= full_channel_value_msat {
1955 return Err(ChannelError::Close(format!("Minimum htlc value ({}) is full channel value ({})", msg.htlc_minimum_msat, full_channel_value_msat)));
1957 let max_delay_acceptable = u16::min(peer_limits.their_to_self_delay, MAX_LOCAL_BREAKDOWN_TIMEOUT);
1958 if msg.to_self_delay > max_delay_acceptable {
1959 return Err(ChannelError::Close(format!("They wanted our payments to be delayed by a needlessly long period. Upper limit: {}. Actual: {}", max_delay_acceptable, msg.to_self_delay)));
1961 if msg.max_accepted_htlcs < 1 {
1962 return Err(ChannelError::Close("0 max_accepted_htlcs makes for a useless channel".to_owned()));
1964 if msg.max_accepted_htlcs > MAX_HTLCS {
1965 return Err(ChannelError::Close(format!("max_accepted_htlcs was {}. It must not be larger than {}", msg.max_accepted_htlcs, MAX_HTLCS)));
1968 // Now check against optional parameters as set by config...
1969 if msg.htlc_minimum_msat > peer_limits.max_htlc_minimum_msat {
1970 return Err(ChannelError::Close(format!("htlc_minimum_msat ({}) is higher than the user specified limit ({})", msg.htlc_minimum_msat, peer_limits.max_htlc_minimum_msat)));
1972 if msg.max_htlc_value_in_flight_msat < peer_limits.min_max_htlc_value_in_flight_msat {
1973 return Err(ChannelError::Close(format!("max_htlc_value_in_flight_msat ({}) is less than the user specified limit ({})", msg.max_htlc_value_in_flight_msat, peer_limits.min_max_htlc_value_in_flight_msat)));
1975 if msg.channel_reserve_satoshis > peer_limits.max_channel_reserve_satoshis {
1976 return Err(ChannelError::Close(format!("channel_reserve_satoshis ({}) is higher than the user specified limit ({})", msg.channel_reserve_satoshis, peer_limits.max_channel_reserve_satoshis)));
1978 if msg.max_accepted_htlcs < peer_limits.min_max_accepted_htlcs {
1979 return Err(ChannelError::Close(format!("max_accepted_htlcs ({}) is less than the user specified limit ({})", msg.max_accepted_htlcs, peer_limits.min_max_accepted_htlcs)));
1981 if msg.dust_limit_satoshis < MIN_CHAN_DUST_LIMIT_SATOSHIS {
1982 return Err(ChannelError::Close(format!("dust_limit_satoshis ({}) is less than the implementation limit ({})", msg.dust_limit_satoshis, MIN_CHAN_DUST_LIMIT_SATOSHIS)));
1984 if msg.dust_limit_satoshis > MAX_CHAN_DUST_LIMIT_SATOSHIS {
1985 return Err(ChannelError::Close(format!("dust_limit_satoshis ({}) is greater than the implementation limit ({})", msg.dust_limit_satoshis, MAX_CHAN_DUST_LIMIT_SATOSHIS)));
1987 if msg.minimum_depth > peer_limits.max_minimum_depth {
1988 return Err(ChannelError::Close(format!("We consider the minimum depth to be unreasonably large. Expected minimum: ({}). Actual: ({})", peer_limits.max_minimum_depth, msg.minimum_depth)));
1990 if msg.minimum_depth == 0 {
1991 // Note that if this changes we should update the serialization minimum version to
1992 // indicate to older clients that they don't understand some features of the current
1994 return Err(ChannelError::Close("Minimum confirmation depth must be at least 1".to_owned()));
1997 if let Some(ty) = &msg.channel_type {
1998 if *ty != self.channel_type {
1999 return Err(ChannelError::Close("Channel Type in accept_channel didn't match the one sent in open_channel.".to_owned()));
2001 } else if their_features.supports_channel_type() {
2002 // Assume they've accepted the channel type as they said they understand it.
2004 self.channel_type = ChannelTypeFeatures::from_counterparty_init(&their_features)
2007 let counterparty_shutdown_scriptpubkey = if their_features.supports_upfront_shutdown_script() {
2008 match &msg.shutdown_scriptpubkey {
2009 &OptionalField::Present(ref script) => {
2010 // Peer is signaling upfront_shutdown and has opt-out with a 0-length script. We don't enforce anything
2011 if script.len() == 0 {
2014 if !script::is_bolt2_compliant(&script, their_features) {
2015 return Err(ChannelError::Close(format!("Peer is signaling upfront_shutdown but has provided an unacceptable scriptpubkey format: {}", script)));
2017 Some(script.clone())
2020 // Peer is signaling upfront shutdown but don't opt-out with correct mechanism (a.k.a 0-length script). Peer looks buggy, we fail the channel
2021 &OptionalField::Absent => {
2022 return Err(ChannelError::Close("Peer is signaling upfront_shutdown but we don't get any script. Use 0-length script to opt-out".to_owned()));
2027 self.counterparty_dust_limit_satoshis = msg.dust_limit_satoshis;
2028 self.counterparty_max_htlc_value_in_flight_msat = cmp::min(msg.max_htlc_value_in_flight_msat, self.channel_value_satoshis * 1000);
2029 self.counterparty_selected_channel_reserve_satoshis = Some(msg.channel_reserve_satoshis);
2030 self.counterparty_htlc_minimum_msat = msg.htlc_minimum_msat;
2031 self.counterparty_max_accepted_htlcs = msg.max_accepted_htlcs;
2032 self.minimum_depth = Some(msg.minimum_depth);
2034 let counterparty_pubkeys = ChannelPublicKeys {
2035 funding_pubkey: msg.funding_pubkey,
2036 revocation_basepoint: msg.revocation_basepoint,
2037 payment_point: msg.payment_point,
2038 delayed_payment_basepoint: msg.delayed_payment_basepoint,
2039 htlc_basepoint: msg.htlc_basepoint
2042 self.channel_transaction_parameters.counterparty_parameters = Some(CounterpartyChannelTransactionParameters {
2043 selected_contest_delay: msg.to_self_delay,
2044 pubkeys: counterparty_pubkeys,
2047 self.counterparty_cur_commitment_point = Some(msg.first_per_commitment_point);
2048 self.counterparty_shutdown_scriptpubkey = counterparty_shutdown_scriptpubkey;
2050 self.channel_state = ChannelState::OurInitSent as u32 | ChannelState::TheirInitSent as u32;
2051 self.inbound_handshake_limits_override = None; // We're done enforcing limits on our peer's handshake now.
2056 fn funding_created_signature<L: Deref>(&mut self, sig: &Signature, logger: &L) -> Result<(Txid, CommitmentTransaction, Signature), ChannelError> where L::Target: Logger {
2057 let funding_script = self.get_funding_redeemscript();
2059 let keys = self.build_holder_transaction_keys(self.cur_holder_commitment_transaction_number)?;
2060 let initial_commitment_tx = self.build_commitment_transaction(self.cur_holder_commitment_transaction_number, &keys, true, false, logger).tx;
2062 let trusted_tx = initial_commitment_tx.trust();
2063 let initial_commitment_bitcoin_tx = trusted_tx.built_transaction();
2064 let sighash = initial_commitment_bitcoin_tx.get_sighash_all(&funding_script, self.channel_value_satoshis);
2065 // They sign the holder commitment transaction...
2066 log_trace!(logger, "Checking funding_created tx signature {} by key {} against tx {} (sighash {}) with redeemscript {} for channel {}.",
2067 log_bytes!(sig.serialize_compact()[..]), log_bytes!(self.counterparty_funding_pubkey().serialize()),
2068 encode::serialize_hex(&initial_commitment_bitcoin_tx.transaction), log_bytes!(sighash[..]),
2069 encode::serialize_hex(&funding_script), log_bytes!(self.channel_id()));
2070 secp_check!(self.secp_ctx.verify_ecdsa(&sighash, &sig, self.counterparty_funding_pubkey()), "Invalid funding_created signature from peer".to_owned());
2073 let counterparty_keys = self.build_remote_transaction_keys()?;
2074 let counterparty_initial_commitment_tx = self.build_commitment_transaction(self.cur_counterparty_commitment_transaction_number, &counterparty_keys, false, false, logger).tx;
2076 let counterparty_trusted_tx = counterparty_initial_commitment_tx.trust();
2077 let counterparty_initial_bitcoin_tx = counterparty_trusted_tx.built_transaction();
2078 log_trace!(logger, "Initial counterparty tx for channel {} is: txid {} tx {}",
2079 log_bytes!(self.channel_id()), counterparty_initial_bitcoin_tx.txid, encode::serialize_hex(&counterparty_initial_bitcoin_tx.transaction));
2081 let counterparty_signature = self.holder_signer.sign_counterparty_commitment(&counterparty_initial_commitment_tx, Vec::new(), &self.secp_ctx)
2082 .map_err(|_| ChannelError::Close("Failed to get signatures for new commitment_signed".to_owned()))?.0;
2084 // We sign "counterparty" commitment transaction, allowing them to broadcast the tx if they wish.
2085 Ok((counterparty_initial_bitcoin_tx.txid, initial_commitment_tx, counterparty_signature))
2088 fn counterparty_funding_pubkey(&self) -> &PublicKey {
2089 &self.get_counterparty_pubkeys().funding_pubkey
2092 pub fn funding_created<L: Deref>(&mut self, msg: &msgs::FundingCreated, best_block: BestBlock, logger: &L) -> Result<(msgs::FundingSigned, ChannelMonitor<Signer>), ChannelError> where L::Target: Logger {
2093 if self.is_outbound() {
2094 return Err(ChannelError::Close("Received funding_created for an outbound channel?".to_owned()));
2096 if self.channel_state != (ChannelState::OurInitSent as u32 | ChannelState::TheirInitSent as u32) {
2097 // BOLT 2 says that if we disconnect before we send funding_signed we SHOULD NOT
2098 // remember the channel, so it's safe to just send an error_message here and drop the
2100 return Err(ChannelError::Close("Received funding_created after we got the channel!".to_owned()));
2102 if self.inbound_awaiting_accept {
2103 return Err(ChannelError::Close("FundingCreated message received before the channel was accepted".to_owned()));
2105 if self.commitment_secrets.get_min_seen_secret() != (1 << 48) ||
2106 self.cur_counterparty_commitment_transaction_number != INITIAL_COMMITMENT_NUMBER ||
2107 self.cur_holder_commitment_transaction_number != INITIAL_COMMITMENT_NUMBER {
2108 panic!("Should not have advanced channel commitment tx numbers prior to funding_created");
2111 let funding_txo = OutPoint { txid: msg.funding_txid, index: msg.funding_output_index };
2112 self.channel_transaction_parameters.funding_outpoint = Some(funding_txo);
2113 // This is an externally observable change before we finish all our checks. In particular
2114 // funding_created_signature may fail.
2115 self.holder_signer.ready_channel(&self.channel_transaction_parameters);
2117 let (counterparty_initial_commitment_txid, initial_commitment_tx, signature) = match self.funding_created_signature(&msg.signature, logger) {
2119 Err(ChannelError::Close(e)) => {
2120 self.channel_transaction_parameters.funding_outpoint = None;
2121 return Err(ChannelError::Close(e));
2124 // The only error we know how to handle is ChannelError::Close, so we fall over here
2125 // to make sure we don't continue with an inconsistent state.
2126 panic!("unexpected error type from funding_created_signature {:?}", e);
2130 let holder_commitment_tx = HolderCommitmentTransaction::new(
2131 initial_commitment_tx,
2134 &self.get_holder_pubkeys().funding_pubkey,
2135 self.counterparty_funding_pubkey()
2138 self.holder_signer.validate_holder_commitment(&holder_commitment_tx, Vec::new())
2139 .map_err(|_| ChannelError::Close("Failed to validate our commitment".to_owned()))?;
2141 // Now that we're past error-generating stuff, update our local state:
2143 let funding_redeemscript = self.get_funding_redeemscript();
2144 let funding_txo_script = funding_redeemscript.to_v0_p2wsh();
2145 let obscure_factor = get_commitment_transaction_number_obscure_factor(&self.get_holder_pubkeys().payment_point, &self.get_counterparty_pubkeys().payment_point, self.is_outbound());
2146 let shutdown_script = self.shutdown_scriptpubkey.clone().map(|script| script.into_inner());
2147 let channel_monitor = ChannelMonitor::new(self.secp_ctx.clone(), self.holder_signer.clone(),
2148 shutdown_script, self.get_holder_selected_contest_delay(),
2149 &self.destination_script, (funding_txo, funding_txo_script.clone()),
2150 &self.channel_transaction_parameters,
2151 funding_redeemscript.clone(), self.channel_value_satoshis,
2153 holder_commitment_tx, best_block);
2155 channel_monitor.provide_latest_counterparty_commitment_tx(counterparty_initial_commitment_txid, Vec::new(), self.cur_counterparty_commitment_transaction_number, self.counterparty_cur_commitment_point.unwrap(), logger);
2157 self.channel_state = ChannelState::FundingSent as u32;
2158 self.channel_id = funding_txo.to_channel_id();
2159 self.cur_counterparty_commitment_transaction_number -= 1;
2160 self.cur_holder_commitment_transaction_number -= 1;
2162 log_info!(logger, "Generated funding_signed for peer for channel {}", log_bytes!(self.channel_id()));
2164 Ok((msgs::FundingSigned {
2165 channel_id: self.channel_id,
2167 }, channel_monitor))
2170 /// Handles a funding_signed message from the remote end.
2171 /// If this call is successful, broadcast the funding transaction (and not before!)
2172 pub fn funding_signed<L: Deref>(&mut self, msg: &msgs::FundingSigned, best_block: BestBlock, logger: &L) -> Result<(ChannelMonitor<Signer>, Transaction), ChannelError> where L::Target: Logger {
2173 if !self.is_outbound() {
2174 return Err(ChannelError::Close("Received funding_signed for an inbound channel?".to_owned()));
2176 if self.channel_state & !(ChannelState::MonitorUpdateFailed as u32) != ChannelState::FundingCreated as u32 {
2177 return Err(ChannelError::Close("Received funding_signed in strange state!".to_owned()));
2179 if self.commitment_secrets.get_min_seen_secret() != (1 << 48) ||
2180 self.cur_counterparty_commitment_transaction_number != INITIAL_COMMITMENT_NUMBER ||
2181 self.cur_holder_commitment_transaction_number != INITIAL_COMMITMENT_NUMBER {
2182 panic!("Should not have advanced channel commitment tx numbers prior to funding_created");
2185 let funding_script = self.get_funding_redeemscript();
2187 let counterparty_keys = self.build_remote_transaction_keys()?;
2188 let counterparty_initial_commitment_tx = self.build_commitment_transaction(self.cur_counterparty_commitment_transaction_number, &counterparty_keys, false, false, logger).tx;
2189 let counterparty_trusted_tx = counterparty_initial_commitment_tx.trust();
2190 let counterparty_initial_bitcoin_tx = counterparty_trusted_tx.built_transaction();
2192 log_trace!(logger, "Initial counterparty tx for channel {} is: txid {} tx {}",
2193 log_bytes!(self.channel_id()), counterparty_initial_bitcoin_tx.txid, encode::serialize_hex(&counterparty_initial_bitcoin_tx.transaction));
2195 let holder_signer = self.build_holder_transaction_keys(self.cur_holder_commitment_transaction_number)?;
2196 let initial_commitment_tx = self.build_commitment_transaction(self.cur_holder_commitment_transaction_number, &holder_signer, true, false, logger).tx;
2198 let trusted_tx = initial_commitment_tx.trust();
2199 let initial_commitment_bitcoin_tx = trusted_tx.built_transaction();
2200 let sighash = initial_commitment_bitcoin_tx.get_sighash_all(&funding_script, self.channel_value_satoshis);
2201 // They sign our commitment transaction, allowing us to broadcast the tx if we wish.
2202 if let Err(_) = self.secp_ctx.verify_ecdsa(&sighash, &msg.signature, &self.get_counterparty_pubkeys().funding_pubkey) {
2203 return Err(ChannelError::Close("Invalid funding_signed signature from peer".to_owned()));
2207 let holder_commitment_tx = HolderCommitmentTransaction::new(
2208 initial_commitment_tx,
2211 &self.get_holder_pubkeys().funding_pubkey,
2212 self.counterparty_funding_pubkey()
2215 self.holder_signer.validate_holder_commitment(&holder_commitment_tx, Vec::new())
2216 .map_err(|_| ChannelError::Close("Failed to validate our commitment".to_owned()))?;
2219 let funding_redeemscript = self.get_funding_redeemscript();
2220 let funding_txo = self.get_funding_txo().unwrap();
2221 let funding_txo_script = funding_redeemscript.to_v0_p2wsh();
2222 let obscure_factor = get_commitment_transaction_number_obscure_factor(&self.get_holder_pubkeys().payment_point, &self.get_counterparty_pubkeys().payment_point, self.is_outbound());
2223 let shutdown_script = self.shutdown_scriptpubkey.clone().map(|script| script.into_inner());
2224 let channel_monitor = ChannelMonitor::new(self.secp_ctx.clone(), self.holder_signer.clone(),
2225 shutdown_script, self.get_holder_selected_contest_delay(),
2226 &self.destination_script, (funding_txo, funding_txo_script),
2227 &self.channel_transaction_parameters,
2228 funding_redeemscript.clone(), self.channel_value_satoshis,
2230 holder_commitment_tx, best_block);
2232 channel_monitor.provide_latest_counterparty_commitment_tx(counterparty_initial_bitcoin_tx.txid, Vec::new(), self.cur_counterparty_commitment_transaction_number, self.counterparty_cur_commitment_point.unwrap(), logger);
2234 assert_eq!(self.channel_state & (ChannelState::MonitorUpdateFailed as u32), 0); // We have no had any monitor(s) yet to fail update!
2235 self.channel_state = ChannelState::FundingSent as u32;
2236 self.cur_holder_commitment_transaction_number -= 1;
2237 self.cur_counterparty_commitment_transaction_number -= 1;
2239 log_info!(logger, "Received funding_signed from peer for channel {}", log_bytes!(self.channel_id()));
2241 Ok((channel_monitor, self.funding_transaction.as_ref().cloned().unwrap()))
2244 /// Handles a funding_locked message from our peer. If we've already sent our funding_locked
2245 /// and the channel is now usable (and public), this may generate an announcement_signatures to
2247 pub fn funding_locked<L: Deref>(&mut self, msg: &msgs::FundingLocked, node_pk: PublicKey, genesis_block_hash: BlockHash, best_block: &BestBlock, logger: &L) -> Result<Option<msgs::AnnouncementSignatures>, ChannelError> where L::Target: Logger {
2248 if self.channel_state & (ChannelState::PeerDisconnected as u32) == ChannelState::PeerDisconnected as u32 {
2249 self.workaround_lnd_bug_4006 = Some(msg.clone());
2250 return Err(ChannelError::Ignore("Peer sent funding_locked when we needed a channel_reestablish. The peer is likely lnd, see https://github.com/lightningnetwork/lnd/issues/4006".to_owned()));
2253 if let Some(scid_alias) = msg.short_channel_id_alias {
2254 if Some(scid_alias) != self.short_channel_id {
2255 // The scid alias provided can be used to route payments *from* our counterparty,
2256 // i.e. can be used for inbound payments and provided in invoices, but is not used
2257 // when routing outbound payments.
2258 self.latest_inbound_scid_alias = Some(scid_alias);
2262 let non_shutdown_state = self.channel_state & (!MULTI_STATE_FLAGS);
2264 if non_shutdown_state == ChannelState::FundingSent as u32 {
2265 self.channel_state |= ChannelState::TheirFundingLocked as u32;
2266 } else if non_shutdown_state == (ChannelState::FundingSent as u32 | ChannelState::OurFundingLocked as u32) {
2267 self.channel_state = ChannelState::ChannelFunded as u32 | (self.channel_state & MULTI_STATE_FLAGS);
2268 self.update_time_counter += 1;
2269 } else if self.channel_state & (ChannelState::ChannelFunded as u32) != 0 ||
2270 // If we reconnected before sending our funding locked they may still resend theirs:
2271 (self.channel_state & (ChannelState::FundingSent as u32 | ChannelState::TheirFundingLocked as u32) ==
2272 (ChannelState::FundingSent as u32 | ChannelState::TheirFundingLocked as u32))
2274 // They probably disconnected/reconnected and re-sent the funding_locked, which is
2275 // required, or they're sending a fresh SCID alias.
2276 let expected_point =
2277 if self.cur_counterparty_commitment_transaction_number == INITIAL_COMMITMENT_NUMBER - 1 {
2278 // If they haven't ever sent an updated point, the point they send should match
2280 self.counterparty_cur_commitment_point
2282 // If they have sent updated points, funding_locked is always supposed to match
2283 // their "first" point, which we re-derive here.
2284 Some(PublicKey::from_secret_key(&self.secp_ctx, &SecretKey::from_slice(
2285 &self.commitment_secrets.get_secret(INITIAL_COMMITMENT_NUMBER - 1).expect("We should have all prev secrets available")
2286 ).expect("We already advanced, so previous secret keys should have been validated already")))
2288 if expected_point != Some(msg.next_per_commitment_point) {
2289 return Err(ChannelError::Close("Peer sent a reconnect funding_locked with a different point".to_owned()));
2293 return Err(ChannelError::Close("Peer sent a funding_locked at a strange time".to_owned()));
2296 self.counterparty_prev_commitment_point = self.counterparty_cur_commitment_point;
2297 self.counterparty_cur_commitment_point = Some(msg.next_per_commitment_point);
2299 log_info!(logger, "Received funding_locked from peer for channel {}", log_bytes!(self.channel_id()));
2301 Ok(self.get_announcement_sigs(node_pk, genesis_block_hash, best_block.height(), logger))
2304 /// Returns transaction if there is pending funding transaction that is yet to broadcast
2305 pub fn unbroadcasted_funding(&self) -> Option<Transaction> {
2306 if self.channel_state & (ChannelState::FundingCreated as u32) != 0 {
2307 self.funding_transaction.clone()
2313 /// Returns a HTLCStats about inbound pending htlcs
2314 fn get_inbound_pending_htlc_stats(&self, outbound_feerate_update: Option<u32>) -> HTLCStats {
2315 let mut stats = HTLCStats {
2316 pending_htlcs: self.pending_inbound_htlcs.len() as u32,
2317 pending_htlcs_value_msat: 0,
2318 on_counterparty_tx_dust_exposure_msat: 0,
2319 on_holder_tx_dust_exposure_msat: 0,
2320 holding_cell_msat: 0,
2321 on_holder_tx_holding_cell_htlcs_count: 0,
2324 let counterparty_dust_limit_timeout_sat = (self.get_dust_buffer_feerate(outbound_feerate_update) as u64 * htlc_timeout_tx_weight(self.opt_anchors()) / 1000) + self.counterparty_dust_limit_satoshis;
2325 let holder_dust_limit_success_sat = (self.get_dust_buffer_feerate(outbound_feerate_update) as u64 * htlc_success_tx_weight(self.opt_anchors()) / 1000) + self.holder_dust_limit_satoshis;
2326 for ref htlc in self.pending_inbound_htlcs.iter() {
2327 stats.pending_htlcs_value_msat += htlc.amount_msat;
2328 if htlc.amount_msat / 1000 < counterparty_dust_limit_timeout_sat {
2329 stats.on_counterparty_tx_dust_exposure_msat += htlc.amount_msat;
2331 if htlc.amount_msat / 1000 < holder_dust_limit_success_sat {
2332 stats.on_holder_tx_dust_exposure_msat += htlc.amount_msat;
2338 /// Returns a HTLCStats about pending outbound htlcs, *including* pending adds in our holding cell.
2339 fn get_outbound_pending_htlc_stats(&self, outbound_feerate_update: Option<u32>) -> HTLCStats {
2340 let mut stats = HTLCStats {
2341 pending_htlcs: self.pending_outbound_htlcs.len() as u32,
2342 pending_htlcs_value_msat: 0,
2343 on_counterparty_tx_dust_exposure_msat: 0,
2344 on_holder_tx_dust_exposure_msat: 0,
2345 holding_cell_msat: 0,
2346 on_holder_tx_holding_cell_htlcs_count: 0,
2349 let counterparty_dust_limit_success_sat = (self.get_dust_buffer_feerate(outbound_feerate_update) as u64 * htlc_success_tx_weight(self.opt_anchors()) / 1000) + self.counterparty_dust_limit_satoshis;
2350 let holder_dust_limit_timeout_sat = (self.get_dust_buffer_feerate(outbound_feerate_update) as u64 * htlc_timeout_tx_weight(self.opt_anchors()) / 1000) + self.holder_dust_limit_satoshis;
2351 for ref htlc in self.pending_outbound_htlcs.iter() {
2352 stats.pending_htlcs_value_msat += htlc.amount_msat;
2353 if htlc.amount_msat / 1000 < counterparty_dust_limit_success_sat {
2354 stats.on_counterparty_tx_dust_exposure_msat += htlc.amount_msat;
2356 if htlc.amount_msat / 1000 < holder_dust_limit_timeout_sat {
2357 stats.on_holder_tx_dust_exposure_msat += htlc.amount_msat;
2361 for update in self.holding_cell_htlc_updates.iter() {
2362 if let &HTLCUpdateAwaitingACK::AddHTLC { ref amount_msat, .. } = update {
2363 stats.pending_htlcs += 1;
2364 stats.pending_htlcs_value_msat += amount_msat;
2365 stats.holding_cell_msat += amount_msat;
2366 if *amount_msat / 1000 < counterparty_dust_limit_success_sat {
2367 stats.on_counterparty_tx_dust_exposure_msat += amount_msat;
2369 if *amount_msat / 1000 < holder_dust_limit_timeout_sat {
2370 stats.on_holder_tx_dust_exposure_msat += amount_msat;
2372 stats.on_holder_tx_holding_cell_htlcs_count += 1;
2379 /// Get the available balances, see [`AvailableBalances`]'s fields for more info.
2380 /// Doesn't bother handling the
2381 /// if-we-removed-it-already-but-haven't-fully-resolved-they-can-still-send-an-inbound-HTLC
2382 /// corner case properly.
2383 pub fn get_available_balances(&self) -> AvailableBalances {
2384 // Note that we have to handle overflow due to the above case.
2385 let outbound_stats = self.get_outbound_pending_htlc_stats(None);
2387 let mut balance_msat = self.value_to_self_msat;
2388 for ref htlc in self.pending_inbound_htlcs.iter() {
2389 if let InboundHTLCState::LocalRemoved(InboundHTLCRemovalReason::Fulfill(_)) = htlc.state {
2390 balance_msat += htlc.amount_msat;
2393 balance_msat -= outbound_stats.pending_htlcs_value_msat;
2395 let outbound_capacity_msat = cmp::max(self.value_to_self_msat as i64
2396 - outbound_stats.pending_htlcs_value_msat as i64
2397 - self.counterparty_selected_channel_reserve_satoshis.unwrap_or(0) as i64 * 1000,
2400 inbound_capacity_msat: cmp::max(self.channel_value_satoshis as i64 * 1000
2401 - self.value_to_self_msat as i64
2402 - self.get_inbound_pending_htlc_stats(None).pending_htlcs_value_msat as i64
2403 - self.holder_selected_channel_reserve_satoshis as i64 * 1000,
2405 outbound_capacity_msat,
2406 next_outbound_htlc_limit_msat: cmp::max(cmp::min(outbound_capacity_msat as i64,
2407 self.counterparty_max_htlc_value_in_flight_msat as i64
2408 - outbound_stats.pending_htlcs_value_msat as i64),
2414 pub fn get_holder_counterparty_selected_channel_reserve_satoshis(&self) -> (u64, Option<u64>) {
2415 (self.holder_selected_channel_reserve_satoshis, self.counterparty_selected_channel_reserve_satoshis)
2418 // Get the fee cost in MSATS of a commitment tx with a given number of HTLC outputs.
2419 // Note that num_htlcs should not include dust HTLCs.
2420 fn commit_tx_fee_msat(feerate_per_kw: u32, num_htlcs: usize, opt_anchors: bool) -> u64 {
2421 // Note that we need to divide before multiplying to round properly,
2422 // since the lowest denomination of bitcoin on-chain is the satoshi.
2423 (commitment_tx_base_weight(opt_anchors) + num_htlcs as u64 * COMMITMENT_TX_WEIGHT_PER_HTLC) * feerate_per_kw as u64 / 1000 * 1000
2426 // Get the fee cost in SATS of a commitment tx with a given number of HTLC outputs.
2427 // Note that num_htlcs should not include dust HTLCs.
2429 fn commit_tx_fee_sat(feerate_per_kw: u32, num_htlcs: usize, opt_anchors: bool) -> u64 {
2430 feerate_per_kw as u64 * (commitment_tx_base_weight(opt_anchors) + num_htlcs as u64 * COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000
2433 // Get the commitment tx fee for the local's (i.e. our) next commitment transaction based on the
2434 // number of pending HTLCs that are on track to be in our next commitment tx, plus an additional
2435 // HTLC if `fee_spike_buffer_htlc` is Some, plus a new HTLC given by `new_htlc_amount`. Dust HTLCs
2437 fn next_local_commit_tx_fee_msat(&self, htlc: HTLCCandidate, fee_spike_buffer_htlc: Option<()>) -> u64 {
2438 assert!(self.is_outbound());
2440 let real_dust_limit_success_sat = (self.feerate_per_kw as u64 * htlc_success_tx_weight(self.opt_anchors()) / 1000) + self.holder_dust_limit_satoshis;
2441 let real_dust_limit_timeout_sat = (self.feerate_per_kw as u64 * htlc_timeout_tx_weight(self.opt_anchors()) / 1000) + self.holder_dust_limit_satoshis;
2443 let mut addl_htlcs = 0;
2444 if fee_spike_buffer_htlc.is_some() { addl_htlcs += 1; }
2446 HTLCInitiator::LocalOffered => {
2447 if htlc.amount_msat / 1000 >= real_dust_limit_timeout_sat {
2451 HTLCInitiator::RemoteOffered => {
2452 if htlc.amount_msat / 1000 >= real_dust_limit_success_sat {
2458 let mut included_htlcs = 0;
2459 for ref htlc in self.pending_inbound_htlcs.iter() {
2460 if htlc.amount_msat / 1000 < real_dust_limit_success_sat {
2463 // We include LocalRemoved HTLCs here because we may still need to broadcast a commitment
2464 // transaction including this HTLC if it times out before they RAA.
2465 included_htlcs += 1;
2468 for ref htlc in self.pending_outbound_htlcs.iter() {
2469 if htlc.amount_msat / 1000 < real_dust_limit_timeout_sat {
2473 OutboundHTLCState::LocalAnnounced {..} => included_htlcs += 1,
2474 OutboundHTLCState::Committed => included_htlcs += 1,
2475 OutboundHTLCState::RemoteRemoved {..} => included_htlcs += 1,
2476 // We don't include AwaitingRemoteRevokeToRemove HTLCs because our next commitment
2477 // transaction won't be generated until they send us their next RAA, which will mean
2478 // dropping any HTLCs in this state.
2483 for htlc in self.holding_cell_htlc_updates.iter() {
2485 &HTLCUpdateAwaitingACK::AddHTLC { amount_msat, .. } => {
2486 if amount_msat / 1000 < real_dust_limit_timeout_sat {
2491 _ => {}, // Don't include claims/fails that are awaiting ack, because once we get the
2492 // ack we're guaranteed to never include them in commitment txs anymore.
2496 let num_htlcs = included_htlcs + addl_htlcs;
2497 let res = Self::commit_tx_fee_msat(self.feerate_per_kw, num_htlcs, self.opt_anchors());
2498 #[cfg(any(test, fuzzing))]
2501 if fee_spike_buffer_htlc.is_some() {
2502 fee = Self::commit_tx_fee_msat(self.feerate_per_kw, num_htlcs - 1, self.opt_anchors());
2504 let total_pending_htlcs = self.pending_inbound_htlcs.len() + self.pending_outbound_htlcs.len()
2505 + self.holding_cell_htlc_updates.len();
2506 let commitment_tx_info = CommitmentTxInfoCached {
2508 total_pending_htlcs,
2509 next_holder_htlc_id: match htlc.origin {
2510 HTLCInitiator::LocalOffered => self.next_holder_htlc_id + 1,
2511 HTLCInitiator::RemoteOffered => self.next_holder_htlc_id,
2513 next_counterparty_htlc_id: match htlc.origin {
2514 HTLCInitiator::LocalOffered => self.next_counterparty_htlc_id,
2515 HTLCInitiator::RemoteOffered => self.next_counterparty_htlc_id + 1,
2517 feerate: self.feerate_per_kw,
2519 *self.next_local_commitment_tx_fee_info_cached.lock().unwrap() = Some(commitment_tx_info);
2524 // Get the commitment tx fee for the remote's next commitment transaction based on the number of
2525 // pending HTLCs that are on track to be in their next commitment tx, plus an additional HTLC if
2526 // `fee_spike_buffer_htlc` is Some, plus a new HTLC given by `new_htlc_amount`. Dust HTLCs are
2528 fn next_remote_commit_tx_fee_msat(&self, htlc: HTLCCandidate, fee_spike_buffer_htlc: Option<()>) -> u64 {
2529 assert!(!self.is_outbound());
2531 let real_dust_limit_success_sat = (self.feerate_per_kw as u64 * htlc_success_tx_weight(self.opt_anchors()) / 1000) + self.counterparty_dust_limit_satoshis;
2532 let real_dust_limit_timeout_sat = (self.feerate_per_kw as u64 * htlc_timeout_tx_weight(self.opt_anchors()) / 1000) + self.counterparty_dust_limit_satoshis;
2534 let mut addl_htlcs = 0;
2535 if fee_spike_buffer_htlc.is_some() { addl_htlcs += 1; }
2537 HTLCInitiator::LocalOffered => {
2538 if htlc.amount_msat / 1000 >= real_dust_limit_success_sat {
2542 HTLCInitiator::RemoteOffered => {
2543 if htlc.amount_msat / 1000 >= real_dust_limit_timeout_sat {
2549 // When calculating the set of HTLCs which will be included in their next commitment_signed, all
2550 // non-dust inbound HTLCs are included (as all states imply it will be included) and only
2551 // committed outbound HTLCs, see below.
2552 let mut included_htlcs = 0;
2553 for ref htlc in self.pending_inbound_htlcs.iter() {
2554 if htlc.amount_msat / 1000 <= real_dust_limit_timeout_sat {
2557 included_htlcs += 1;
2560 for ref htlc in self.pending_outbound_htlcs.iter() {
2561 if htlc.amount_msat / 1000 <= real_dust_limit_success_sat {
2564 // We only include outbound HTLCs if it will not be included in their next commitment_signed,
2565 // i.e. if they've responded to us with an RAA after announcement.
2567 OutboundHTLCState::Committed => included_htlcs += 1,
2568 OutboundHTLCState::RemoteRemoved {..} => included_htlcs += 1,
2569 OutboundHTLCState::LocalAnnounced { .. } => included_htlcs += 1,
2574 let num_htlcs = included_htlcs + addl_htlcs;
2575 let res = Self::commit_tx_fee_msat(self.feerate_per_kw, num_htlcs, self.opt_anchors());
2576 #[cfg(any(test, fuzzing))]
2579 if fee_spike_buffer_htlc.is_some() {
2580 fee = Self::commit_tx_fee_msat(self.feerate_per_kw, num_htlcs - 1, self.opt_anchors());
2582 let total_pending_htlcs = self.pending_inbound_htlcs.len() + self.pending_outbound_htlcs.len();
2583 let commitment_tx_info = CommitmentTxInfoCached {
2585 total_pending_htlcs,
2586 next_holder_htlc_id: match htlc.origin {
2587 HTLCInitiator::LocalOffered => self.next_holder_htlc_id + 1,
2588 HTLCInitiator::RemoteOffered => self.next_holder_htlc_id,
2590 next_counterparty_htlc_id: match htlc.origin {
2591 HTLCInitiator::LocalOffered => self.next_counterparty_htlc_id,
2592 HTLCInitiator::RemoteOffered => self.next_counterparty_htlc_id + 1,
2594 feerate: self.feerate_per_kw,
2596 *self.next_remote_commitment_tx_fee_info_cached.lock().unwrap() = Some(commitment_tx_info);
2601 pub fn update_add_htlc<F, L: Deref>(&mut self, msg: &msgs::UpdateAddHTLC, mut pending_forward_status: PendingHTLCStatus, create_pending_htlc_status: F, logger: &L) -> Result<(), ChannelError>
2602 where F: for<'a> Fn(&'a Self, PendingHTLCStatus, u16) -> PendingHTLCStatus, L::Target: Logger {
2603 // We can't accept HTLCs sent after we've sent a shutdown.
2604 let local_sent_shutdown = (self.channel_state & (ChannelState::ChannelFunded as u32 | ChannelState::LocalShutdownSent as u32)) != (ChannelState::ChannelFunded as u32);
2605 if local_sent_shutdown {
2606 pending_forward_status = create_pending_htlc_status(self, pending_forward_status, 0x4000|8);
2608 // If the remote has sent a shutdown prior to adding this HTLC, then they are in violation of the spec.
2609 let remote_sent_shutdown = (self.channel_state & (ChannelState::ChannelFunded as u32 | ChannelState::RemoteShutdownSent as u32)) != (ChannelState::ChannelFunded as u32);
2610 if remote_sent_shutdown {
2611 return Err(ChannelError::Close("Got add HTLC message when channel was not in an operational state".to_owned()));
2613 if self.channel_state & (ChannelState::PeerDisconnected as u32) == ChannelState::PeerDisconnected as u32 {
2614 return Err(ChannelError::Close("Peer sent update_add_htlc when we needed a channel_reestablish".to_owned()));
2616 if msg.amount_msat > self.channel_value_satoshis * 1000 {
2617 return Err(ChannelError::Close("Remote side tried to send more than the total value of the channel".to_owned()));
2619 if msg.amount_msat == 0 {
2620 return Err(ChannelError::Close("Remote side tried to send a 0-msat HTLC".to_owned()));
2622 if msg.amount_msat < self.holder_htlc_minimum_msat {
2623 return Err(ChannelError::Close(format!("Remote side tried to send less than our minimum HTLC value. Lower limit: ({}). Actual: ({})", self.holder_htlc_minimum_msat, msg.amount_msat)));
2626 let inbound_stats = self.get_inbound_pending_htlc_stats(None);
2627 let outbound_stats = self.get_outbound_pending_htlc_stats(None);
2628 if inbound_stats.pending_htlcs + 1 > OUR_MAX_HTLCS as u32 {
2629 return Err(ChannelError::Close(format!("Remote tried to push more than our max accepted HTLCs ({})", OUR_MAX_HTLCS)));
2631 if inbound_stats.pending_htlcs_value_msat + msg.amount_msat > self.holder_max_htlc_value_in_flight_msat {
2632 return Err(ChannelError::Close(format!("Remote HTLC add would put them over our max HTLC value ({})", self.holder_max_htlc_value_in_flight_msat)));
2634 // Check holder_selected_channel_reserve_satoshis (we're getting paid, so they have to at least meet
2635 // the reserve_satoshis we told them to always have as direct payment so that they lose
2636 // something if we punish them for broadcasting an old state).
2637 // Note that we don't really care about having a small/no to_remote output in our local
2638 // commitment transactions, as the purpose of the channel reserve is to ensure we can
2639 // punish *them* if they misbehave, so we discount any outbound HTLCs which will not be
2640 // present in the next commitment transaction we send them (at least for fulfilled ones,
2641 // failed ones won't modify value_to_self).
2642 // Note that we will send HTLCs which another instance of rust-lightning would think
2643 // violate the reserve value if we do not do this (as we forget inbound HTLCs from the
2644 // Channel state once they will not be present in the next received commitment
2646 let mut removed_outbound_total_msat = 0;
2647 for ref htlc in self.pending_outbound_htlcs.iter() {
2648 if let OutboundHTLCState::AwaitingRemoteRevokeToRemove(OutboundHTLCOutcome::Success(_)) = htlc.state {
2649 removed_outbound_total_msat += htlc.amount_msat;
2650 } else if let OutboundHTLCState::AwaitingRemovedRemoteRevoke(OutboundHTLCOutcome::Success(_)) = htlc.state {
2651 removed_outbound_total_msat += htlc.amount_msat;
2655 let exposure_dust_limit_timeout_sats = (self.get_dust_buffer_feerate(None) as u64 * htlc_timeout_tx_weight(self.opt_anchors()) / 1000) + self.counterparty_dust_limit_satoshis;
2656 if msg.amount_msat / 1000 < exposure_dust_limit_timeout_sats {
2657 let on_counterparty_tx_dust_htlc_exposure_msat = inbound_stats.on_counterparty_tx_dust_exposure_msat + outbound_stats.on_counterparty_tx_dust_exposure_msat + msg.amount_msat;
2658 if on_counterparty_tx_dust_htlc_exposure_msat > self.get_max_dust_htlc_exposure_msat() {
2659 log_info!(logger, "Cannot accept value that would put our exposure to dust HTLCs at {} over the limit {} on counterparty commitment tx",
2660 on_counterparty_tx_dust_htlc_exposure_msat, self.get_max_dust_htlc_exposure_msat());
2661 pending_forward_status = create_pending_htlc_status(self, pending_forward_status, 0x1000|7);
2665 let exposure_dust_limit_success_sats = (self.get_dust_buffer_feerate(None) as u64 * htlc_success_tx_weight(self.opt_anchors()) / 1000) + self.holder_dust_limit_satoshis;
2666 if msg.amount_msat / 1000 < exposure_dust_limit_success_sats {
2667 let on_holder_tx_dust_htlc_exposure_msat = inbound_stats.on_holder_tx_dust_exposure_msat + outbound_stats.on_holder_tx_dust_exposure_msat + msg.amount_msat;
2668 if on_holder_tx_dust_htlc_exposure_msat > self.get_max_dust_htlc_exposure_msat() {
2669 log_info!(logger, "Cannot accept value that would put our exposure to dust HTLCs at {} over the limit {} on holder commitment tx",
2670 on_holder_tx_dust_htlc_exposure_msat, self.get_max_dust_htlc_exposure_msat());
2671 pending_forward_status = create_pending_htlc_status(self, pending_forward_status, 0x1000|7);
2675 let pending_value_to_self_msat =
2676 self.value_to_self_msat + inbound_stats.pending_htlcs_value_msat - removed_outbound_total_msat;
2677 let pending_remote_value_msat =
2678 self.channel_value_satoshis * 1000 - pending_value_to_self_msat;
2679 if pending_remote_value_msat < msg.amount_msat {
2680 return Err(ChannelError::Close("Remote HTLC add would overdraw remaining funds".to_owned()));
2683 // Check that the remote can afford to pay for this HTLC on-chain at the current
2684 // feerate_per_kw, while maintaining their channel reserve (as required by the spec).
2685 let remote_commit_tx_fee_msat = if self.is_outbound() { 0 } else {
2686 let htlc_candidate = HTLCCandidate::new(msg.amount_msat, HTLCInitiator::RemoteOffered);
2687 self.next_remote_commit_tx_fee_msat(htlc_candidate, None) // Don't include the extra fee spike buffer HTLC in calculations
2689 if pending_remote_value_msat - msg.amount_msat < remote_commit_tx_fee_msat {
2690 return Err(ChannelError::Close("Remote HTLC add would not leave enough to pay for fees".to_owned()));
2693 if pending_remote_value_msat - msg.amount_msat - remote_commit_tx_fee_msat < self.holder_selected_channel_reserve_satoshis * 1000 {
2694 return Err(ChannelError::Close("Remote HTLC add would put them under remote reserve value".to_owned()));
2697 if !self.is_outbound() {
2698 // `2 *` and `Some(())` is for the fee spike buffer we keep for the remote. This deviates from
2699 // the spec because in the spec, the fee spike buffer requirement doesn't exist on the
2700 // receiver's side, only on the sender's.
2701 // Note that when we eventually remove support for fee updates and switch to anchor output
2702 // fees, we will drop the `2 *`, since we no longer be as sensitive to fee spikes. But, keep
2703 // the extra htlc when calculating the next remote commitment transaction fee as we should
2704 // still be able to afford adding this HTLC plus one more future HTLC, regardless of being
2705 // sensitive to fee spikes.
2706 let htlc_candidate = HTLCCandidate::new(msg.amount_msat, HTLCInitiator::RemoteOffered);
2707 let remote_fee_cost_incl_stuck_buffer_msat = 2 * self.next_remote_commit_tx_fee_msat(htlc_candidate, Some(()));
2708 if pending_remote_value_msat - msg.amount_msat - self.holder_selected_channel_reserve_satoshis * 1000 < remote_fee_cost_incl_stuck_buffer_msat {
2709 // Note that if the pending_forward_status is not updated here, then it's because we're already failing
2710 // the HTLC, i.e. its status is already set to failing.
2711 log_info!(logger, "Attempting to fail HTLC due to fee spike buffer violation in channel {}. Rebalancing is required.", log_bytes!(self.channel_id()));
2712 pending_forward_status = create_pending_htlc_status(self, pending_forward_status, 0x1000|7);
2715 // Check that they won't violate our local required channel reserve by adding this HTLC.
2716 let htlc_candidate = HTLCCandidate::new(msg.amount_msat, HTLCInitiator::RemoteOffered);
2717 let local_commit_tx_fee_msat = self.next_local_commit_tx_fee_msat(htlc_candidate, None);
2718 if self.value_to_self_msat < self.counterparty_selected_channel_reserve_satoshis.unwrap() * 1000 + local_commit_tx_fee_msat {
2719 return Err(ChannelError::Close("Cannot accept HTLC that would put our balance under counterparty-announced channel reserve value".to_owned()));
2722 if self.next_counterparty_htlc_id != msg.htlc_id {
2723 return Err(ChannelError::Close(format!("Remote skipped HTLC ID (skipped ID: {})", self.next_counterparty_htlc_id)));
2725 if msg.cltv_expiry >= 500000000 {
2726 return Err(ChannelError::Close("Remote provided CLTV expiry in seconds instead of block height".to_owned()));
2729 if self.channel_state & ChannelState::LocalShutdownSent as u32 != 0 {
2730 if let PendingHTLCStatus::Forward(_) = pending_forward_status {
2731 panic!("ChannelManager shouldn't be trying to add a forwardable HTLC after we've started closing");
2735 // Now update local state:
2736 self.next_counterparty_htlc_id += 1;
2737 self.pending_inbound_htlcs.push(InboundHTLCOutput {
2738 htlc_id: msg.htlc_id,
2739 amount_msat: msg.amount_msat,
2740 payment_hash: msg.payment_hash,
2741 cltv_expiry: msg.cltv_expiry,
2742 state: InboundHTLCState::RemoteAnnounced(pending_forward_status),
2747 /// Marks an outbound HTLC which we have received update_fail/fulfill/malformed
2749 fn mark_outbound_htlc_removed(&mut self, htlc_id: u64, check_preimage: Option<PaymentPreimage>, fail_reason: Option<HTLCFailReason>) -> Result<&OutboundHTLCOutput, ChannelError> {
2750 assert!(!(check_preimage.is_some() && fail_reason.is_some()), "cannot fail while we have a preimage");
2751 for htlc in self.pending_outbound_htlcs.iter_mut() {
2752 if htlc.htlc_id == htlc_id {
2753 let outcome = match check_preimage {
2754 None => fail_reason.into(),
2755 Some(payment_preimage) => {
2756 let payment_hash = PaymentHash(Sha256::hash(&payment_preimage.0[..]).into_inner());
2757 if payment_hash != htlc.payment_hash {
2758 return Err(ChannelError::Close(format!("Remote tried to fulfill HTLC ({}) with an incorrect preimage", htlc_id)));
2760 OutboundHTLCOutcome::Success(Some(payment_preimage))
2764 OutboundHTLCState::LocalAnnounced(_) =>
2765 return Err(ChannelError::Close(format!("Remote tried to fulfill/fail HTLC ({}) before it had been committed", htlc_id))),
2766 OutboundHTLCState::Committed => {
2767 htlc.state = OutboundHTLCState::RemoteRemoved(outcome);
2769 OutboundHTLCState::AwaitingRemoteRevokeToRemove(_) | OutboundHTLCState::AwaitingRemovedRemoteRevoke(_) | OutboundHTLCState::RemoteRemoved(_) =>
2770 return Err(ChannelError::Close(format!("Remote tried to fulfill/fail HTLC ({}) that they'd already fulfilled/failed", htlc_id))),
2775 Err(ChannelError::Close("Remote tried to fulfill/fail an HTLC we couldn't find".to_owned()))
2778 pub fn update_fulfill_htlc(&mut self, msg: &msgs::UpdateFulfillHTLC) -> Result<(HTLCSource, u64), ChannelError> {
2779 if (self.channel_state & (ChannelState::ChannelFunded as u32)) != (ChannelState::ChannelFunded as u32) {
2780 return Err(ChannelError::Close("Got fulfill HTLC message when channel was not in an operational state".to_owned()));
2782 if self.channel_state & (ChannelState::PeerDisconnected as u32) == ChannelState::PeerDisconnected as u32 {
2783 return Err(ChannelError::Close("Peer sent update_fulfill_htlc when we needed a channel_reestablish".to_owned()));
2786 self.mark_outbound_htlc_removed(msg.htlc_id, Some(msg.payment_preimage), None).map(|htlc| (htlc.source.clone(), htlc.amount_msat))
2789 pub fn update_fail_htlc(&mut self, msg: &msgs::UpdateFailHTLC, fail_reason: HTLCFailReason) -> Result<(), ChannelError> {
2790 if (self.channel_state & (ChannelState::ChannelFunded as u32)) != (ChannelState::ChannelFunded as u32) {
2791 return Err(ChannelError::Close("Got fail HTLC message when channel was not in an operational state".to_owned()));
2793 if self.channel_state & (ChannelState::PeerDisconnected as u32) == ChannelState::PeerDisconnected as u32 {
2794 return Err(ChannelError::Close("Peer sent update_fail_htlc when we needed a channel_reestablish".to_owned()));
2797 self.mark_outbound_htlc_removed(msg.htlc_id, None, Some(fail_reason))?;
2801 pub fn update_fail_malformed_htlc(&mut self, msg: &msgs::UpdateFailMalformedHTLC, fail_reason: HTLCFailReason) -> Result<(), ChannelError> {
2802 if (self.channel_state & (ChannelState::ChannelFunded as u32)) != (ChannelState::ChannelFunded as u32) {
2803 return Err(ChannelError::Close("Got fail malformed HTLC message when channel was not in an operational state".to_owned()));
2805 if self.channel_state & (ChannelState::PeerDisconnected as u32) == ChannelState::PeerDisconnected as u32 {
2806 return Err(ChannelError::Close("Peer sent update_fail_malformed_htlc when we needed a channel_reestablish".to_owned()));
2809 self.mark_outbound_htlc_removed(msg.htlc_id, None, Some(fail_reason))?;
2813 pub fn commitment_signed<L: Deref>(&mut self, msg: &msgs::CommitmentSigned, logger: &L) -> Result<(msgs::RevokeAndACK, Option<msgs::CommitmentSigned>, ChannelMonitorUpdate), (Option<ChannelMonitorUpdate>, ChannelError)>
2814 where L::Target: Logger
2816 if (self.channel_state & (ChannelState::ChannelFunded as u32)) != (ChannelState::ChannelFunded as u32) {
2817 return Err((None, ChannelError::Close("Got commitment signed message when channel was not in an operational state".to_owned())));
2819 if self.channel_state & (ChannelState::PeerDisconnected as u32) == ChannelState::PeerDisconnected as u32 {
2820 return Err((None, ChannelError::Close("Peer sent commitment_signed when we needed a channel_reestablish".to_owned())));
2822 if self.channel_state & BOTH_SIDES_SHUTDOWN_MASK == BOTH_SIDES_SHUTDOWN_MASK && self.last_sent_closing_fee.is_some() {
2823 return Err((None, ChannelError::Close("Peer sent commitment_signed after we'd started exchanging closing_signeds".to_owned())));
2826 let funding_script = self.get_funding_redeemscript();
2828 let keys = self.build_holder_transaction_keys(self.cur_holder_commitment_transaction_number).map_err(|e| (None, e))?;
2830 let commitment_stats = self.build_commitment_transaction(self.cur_holder_commitment_transaction_number, &keys, true, false, logger);
2831 let commitment_txid = {
2832 let trusted_tx = commitment_stats.tx.trust();
2833 let bitcoin_tx = trusted_tx.built_transaction();
2834 let sighash = bitcoin_tx.get_sighash_all(&funding_script, self.channel_value_satoshis);
2836 log_trace!(logger, "Checking commitment tx signature {} by key {} against tx {} (sighash {}) with redeemscript {} in channel {}",
2837 log_bytes!(msg.signature.serialize_compact()[..]),
2838 log_bytes!(self.counterparty_funding_pubkey().serialize()), encode::serialize_hex(&bitcoin_tx.transaction),
2839 log_bytes!(sighash[..]), encode::serialize_hex(&funding_script), log_bytes!(self.channel_id()));
2840 if let Err(_) = self.secp_ctx.verify_ecdsa(&sighash, &msg.signature, &self.counterparty_funding_pubkey()) {
2841 return Err((None, ChannelError::Close("Invalid commitment tx signature from peer".to_owned())));
2845 let mut htlcs_cloned: Vec<_> = commitment_stats.htlcs_included.iter().map(|htlc| (htlc.0.clone(), htlc.1.map(|h| h.clone()))).collect();
2847 // If our counterparty updated the channel fee in this commitment transaction, check that
2848 // they can actually afford the new fee now.
2849 let update_fee = if let Some((_, update_state)) = self.pending_update_fee {
2850 update_state == FeeUpdateState::RemoteAnnounced
2853 debug_assert!(!self.is_outbound());
2854 let counterparty_reserve_we_require_msat = self.holder_selected_channel_reserve_satoshis * 1000;
2855 if commitment_stats.remote_balance_msat < commitment_stats.total_fee_sat * 1000 + counterparty_reserve_we_require_msat {
2856 return Err((None, ChannelError::Close("Funding remote cannot afford proposed new fee".to_owned())));
2859 #[cfg(any(test, fuzzing))]
2861 if self.is_outbound() {
2862 let projected_commit_tx_info = self.next_local_commitment_tx_fee_info_cached.lock().unwrap().take();
2863 *self.next_remote_commitment_tx_fee_info_cached.lock().unwrap() = None;
2864 if let Some(info) = projected_commit_tx_info {
2865 let total_pending_htlcs = self.pending_inbound_htlcs.len() + self.pending_outbound_htlcs.len()
2866 + self.holding_cell_htlc_updates.len();
2867 if info.total_pending_htlcs == total_pending_htlcs
2868 && info.next_holder_htlc_id == self.next_holder_htlc_id
2869 && info.next_counterparty_htlc_id == self.next_counterparty_htlc_id
2870 && info.feerate == self.feerate_per_kw {
2871 assert_eq!(commitment_stats.total_fee_sat, info.fee / 1000);
2877 if msg.htlc_signatures.len() != commitment_stats.num_nondust_htlcs {
2878 return Err((None, ChannelError::Close(format!("Got wrong number of HTLC signatures ({}) from remote. It must be {}", msg.htlc_signatures.len(), commitment_stats.num_nondust_htlcs))));
2881 // TODO: Sadly, we pass HTLCs twice to ChannelMonitor: once via the HolderCommitmentTransaction and once via the update
2882 let mut htlcs_and_sigs = Vec::with_capacity(htlcs_cloned.len());
2883 for (idx, (htlc, source)) in htlcs_cloned.drain(..).enumerate() {
2884 if let Some(_) = htlc.transaction_output_index {
2885 let htlc_tx = chan_utils::build_htlc_transaction(&commitment_txid, commitment_stats.feerate_per_kw,
2886 self.get_counterparty_selected_contest_delay().unwrap(), &htlc, self.opt_anchors(),
2887 &keys.broadcaster_delayed_payment_key, &keys.revocation_key);
2889 let htlc_redeemscript = chan_utils::get_htlc_redeemscript(&htlc, self.opt_anchors(), &keys);
2890 let htlc_sighashtype = if self.opt_anchors() { EcdsaSighashType::SinglePlusAnyoneCanPay } else { EcdsaSighashType::All };
2891 let htlc_sighash = hash_to_message!(&sighash::SighashCache::new(&htlc_tx).segwit_signature_hash(0, &htlc_redeemscript, htlc.amount_msat / 1000, htlc_sighashtype).unwrap()[..]);
2892 log_trace!(logger, "Checking HTLC tx signature {} by key {} against tx {} (sighash {}) with redeemscript {} in channel {}.",
2893 log_bytes!(msg.htlc_signatures[idx].serialize_compact()[..]), log_bytes!(keys.countersignatory_htlc_key.serialize()),
2894 encode::serialize_hex(&htlc_tx), log_bytes!(htlc_sighash[..]), encode::serialize_hex(&htlc_redeemscript), log_bytes!(self.channel_id()));
2895 if let Err(_) = self.secp_ctx.verify_ecdsa(&htlc_sighash, &msg.htlc_signatures[idx], &keys.countersignatory_htlc_key) {
2896 return Err((None, ChannelError::Close("Invalid HTLC tx signature from peer".to_owned())));
2898 htlcs_and_sigs.push((htlc, Some(msg.htlc_signatures[idx]), source));
2900 htlcs_and_sigs.push((htlc, None, source));
2904 let holder_commitment_tx = HolderCommitmentTransaction::new(
2905 commitment_stats.tx,
2907 msg.htlc_signatures.clone(),
2908 &self.get_holder_pubkeys().funding_pubkey,
2909 self.counterparty_funding_pubkey()
2912 let next_per_commitment_point = self.holder_signer.get_per_commitment_point(self.cur_holder_commitment_transaction_number - 1, &self.secp_ctx);
2913 self.holder_signer.validate_holder_commitment(&holder_commitment_tx, commitment_stats.preimages)
2914 .map_err(|_| (None, ChannelError::Close("Failed to validate our commitment".to_owned())))?;
2915 let per_commitment_secret = self.holder_signer.release_commitment_secret(self.cur_holder_commitment_transaction_number + 1);
2917 // Update state now that we've passed all the can-fail calls...
2918 let mut need_commitment = false;
2919 if let &mut Some((_, ref mut update_state)) = &mut self.pending_update_fee {
2920 if *update_state == FeeUpdateState::RemoteAnnounced {
2921 *update_state = FeeUpdateState::AwaitingRemoteRevokeToAnnounce;
2922 need_commitment = true;
2926 self.latest_monitor_update_id += 1;
2927 let mut monitor_update = ChannelMonitorUpdate {
2928 update_id: self.latest_monitor_update_id,
2929 updates: vec![ChannelMonitorUpdateStep::LatestHolderCommitmentTXInfo {
2930 commitment_tx: holder_commitment_tx,
2931 htlc_outputs: htlcs_and_sigs
2935 for htlc in self.pending_inbound_htlcs.iter_mut() {
2936 let new_forward = if let &InboundHTLCState::RemoteAnnounced(ref forward_info) = &htlc.state {
2937 Some(forward_info.clone())
2939 if let Some(forward_info) = new_forward {
2940 log_trace!(logger, "Updating HTLC {} to AwaitingRemoteRevokeToAnnounce due to commitment_signed in channel {}.",
2941 log_bytes!(htlc.payment_hash.0), log_bytes!(self.channel_id));
2942 htlc.state = InboundHTLCState::AwaitingRemoteRevokeToAnnounce(forward_info);
2943 need_commitment = true;
2946 for htlc in self.pending_outbound_htlcs.iter_mut() {
2947 if let &mut OutboundHTLCState::RemoteRemoved(ref mut outcome) = &mut htlc.state {
2948 log_trace!(logger, "Updating HTLC {} to AwaitingRemoteRevokeToRemove due to commitment_signed in channel {}.",
2949 log_bytes!(htlc.payment_hash.0), log_bytes!(self.channel_id));
2950 // Grab the preimage, if it exists, instead of cloning
2951 let mut reason = OutboundHTLCOutcome::Success(None);
2952 mem::swap(outcome, &mut reason);
2953 htlc.state = OutboundHTLCState::AwaitingRemoteRevokeToRemove(reason);
2954 need_commitment = true;
2958 self.cur_holder_commitment_transaction_number -= 1;
2959 // Note that if we need_commitment & !AwaitingRemoteRevoke we'll call
2960 // send_commitment_no_status_check() next which will reset this to RAAFirst.
2961 self.resend_order = RAACommitmentOrder::CommitmentFirst;
2963 if (self.channel_state & ChannelState::MonitorUpdateFailed as u32) != 0 {
2964 // In case we initially failed monitor updating without requiring a response, we need
2965 // to make sure the RAA gets sent first.
2966 self.monitor_pending_revoke_and_ack = true;
2967 if need_commitment && (self.channel_state & (ChannelState::AwaitingRemoteRevoke as u32)) == 0 {
2968 // If we were going to send a commitment_signed after the RAA, go ahead and do all
2969 // the corresponding HTLC status updates so that get_last_commitment_update
2970 // includes the right HTLCs.
2971 self.monitor_pending_commitment_signed = true;
2972 let (_, mut additional_update) = self.send_commitment_no_status_check(logger).map_err(|e| (None, e))?;
2973 // send_commitment_no_status_check may bump latest_monitor_id but we want them to be
2974 // strictly increasing by one, so decrement it here.
2975 self.latest_monitor_update_id = monitor_update.update_id;
2976 monitor_update.updates.append(&mut additional_update.updates);
2978 log_debug!(logger, "Received valid commitment_signed from peer in channel {}, updated HTLC state but awaiting a monitor update resolution to reply.",
2979 log_bytes!(self.channel_id));
2980 return Err((Some(monitor_update), ChannelError::Ignore("Previous monitor update failure prevented generation of RAA".to_owned())));
2983 let commitment_signed = if need_commitment && (self.channel_state & (ChannelState::AwaitingRemoteRevoke as u32)) == 0 {
2984 // If we're AwaitingRemoteRevoke we can't send a new commitment here, but that's ok -
2985 // we'll send one right away when we get the revoke_and_ack when we
2986 // free_holding_cell_htlcs().
2987 let (msg, mut additional_update) = self.send_commitment_no_status_check(logger).map_err(|e| (None, e))?;
2988 // send_commitment_no_status_check may bump latest_monitor_id but we want them to be
2989 // strictly increasing by one, so decrement it here.
2990 self.latest_monitor_update_id = monitor_update.update_id;
2991 monitor_update.updates.append(&mut additional_update.updates);
2995 log_debug!(logger, "Received valid commitment_signed from peer in channel {}, updating HTLC state and responding with{} a revoke_and_ack.",
2996 log_bytes!(self.channel_id()), if commitment_signed.is_some() { " our own commitment_signed and" } else { "" });
2998 Ok((msgs::RevokeAndACK {
2999 channel_id: self.channel_id,
3000 per_commitment_secret,
3001 next_per_commitment_point,
3002 }, commitment_signed, monitor_update))
3005 /// Public version of the below, checking relevant preconditions first.
3006 /// If we're not in a state where freeing the holding cell makes sense, this is a no-op and
3007 /// returns `(None, Vec::new())`.
3008 pub fn maybe_free_holding_cell_htlcs<L: Deref>(&mut self, logger: &L) -> Result<(Option<(msgs::CommitmentUpdate, ChannelMonitorUpdate)>, Vec<(HTLCSource, PaymentHash)>), ChannelError> where L::Target: Logger {
3009 if self.channel_state >= ChannelState::ChannelFunded as u32 &&
3010 (self.channel_state & (ChannelState::AwaitingRemoteRevoke as u32 | ChannelState::PeerDisconnected as u32 | ChannelState::MonitorUpdateFailed as u32)) == 0 {
3011 self.free_holding_cell_htlcs(logger)
3012 } else { Ok((None, Vec::new())) }
3015 /// Used to fulfill holding_cell_htlcs when we get a remote ack (or implicitly get it by them
3016 /// fulfilling or failing the last pending HTLC)
3017 fn free_holding_cell_htlcs<L: Deref>(&mut self, logger: &L) -> Result<(Option<(msgs::CommitmentUpdate, ChannelMonitorUpdate)>, Vec<(HTLCSource, PaymentHash)>), ChannelError> where L::Target: Logger {
3018 assert_eq!(self.channel_state & ChannelState::MonitorUpdateFailed as u32, 0);
3019 if self.holding_cell_htlc_updates.len() != 0 || self.holding_cell_update_fee.is_some() {
3020 log_trace!(logger, "Freeing holding cell with {} HTLC updates{} in channel {}", self.holding_cell_htlc_updates.len(),
3021 if self.holding_cell_update_fee.is_some() { " and a fee update" } else { "" }, log_bytes!(self.channel_id()));
3023 let mut monitor_update = ChannelMonitorUpdate {
3024 update_id: self.latest_monitor_update_id + 1, // We don't increment this yet!
3025 updates: Vec::new(),
3028 let mut htlc_updates = Vec::new();
3029 mem::swap(&mut htlc_updates, &mut self.holding_cell_htlc_updates);
3030 let mut update_add_htlcs = Vec::with_capacity(htlc_updates.len());
3031 let mut update_fulfill_htlcs = Vec::with_capacity(htlc_updates.len());
3032 let mut update_fail_htlcs = Vec::with_capacity(htlc_updates.len());
3033 let mut htlcs_to_fail = Vec::new();
3034 for htlc_update in htlc_updates.drain(..) {
3035 // Note that this *can* fail, though it should be due to rather-rare conditions on
3036 // fee races with adding too many outputs which push our total payments just over
3037 // the limit. In case it's less rare than I anticipate, we may want to revisit
3038 // handling this case better and maybe fulfilling some of the HTLCs while attempting
3039 // to rebalance channels.
3040 match &htlc_update {
3041 &HTLCUpdateAwaitingACK::AddHTLC {amount_msat, cltv_expiry, ref payment_hash, ref source, ref onion_routing_packet, ..} => {
3042 match self.send_htlc(amount_msat, *payment_hash, cltv_expiry, source.clone(), onion_routing_packet.clone(), logger) {
3043 Ok(update_add_msg_option) => update_add_htlcs.push(update_add_msg_option.unwrap()),
3046 ChannelError::Ignore(ref msg) => {
3047 log_info!(logger, "Failed to send HTLC with payment_hash {} due to {} in channel {}",
3048 log_bytes!(payment_hash.0), msg, log_bytes!(self.channel_id()));
3049 // If we fail to send here, then this HTLC should
3050 // be failed backwards. Failing to send here
3051 // indicates that this HTLC may keep being put back
3052 // into the holding cell without ever being
3053 // successfully forwarded/failed/fulfilled, causing
3054 // our counterparty to eventually close on us.
3055 htlcs_to_fail.push((source.clone(), *payment_hash));
3058 panic!("Got a non-IgnoreError action trying to send holding cell HTLC");
3064 &HTLCUpdateAwaitingACK::ClaimHTLC { ref payment_preimage, htlc_id, .. } => {
3065 // If an HTLC claim was previously added to the holding cell (via
3066 // `get_update_fulfill_htlc`, then generating the claim message itself must
3067 // not fail - any in between attempts to claim the HTLC will have resulted
3068 // in it hitting the holding cell again and we cannot change the state of a
3069 // holding cell HTLC from fulfill to anything else.
3070 let (update_fulfill_msg_option, mut additional_monitor_update) =
3071 if let UpdateFulfillFetch::NewClaim { msg, monitor_update, .. } = self.get_update_fulfill_htlc(htlc_id, *payment_preimage, logger) {
3072 (msg, monitor_update)
3073 } else { unreachable!() };
3074 update_fulfill_htlcs.push(update_fulfill_msg_option.unwrap());
3075 monitor_update.updates.append(&mut additional_monitor_update.updates);
3077 &HTLCUpdateAwaitingACK::FailHTLC { htlc_id, ref err_packet } => {
3078 match self.get_update_fail_htlc(htlc_id, err_packet.clone(), logger) {
3079 Ok(update_fail_msg_option) => {
3080 // If an HTLC failure was previously added to the holding cell (via
3081 // `get_update_fail_htlc`) then generating the fail message itself
3082 // must not fail - we should never end up in a state where we
3083 // double-fail an HTLC or fail-then-claim an HTLC as it indicates
3084 // we didn't wait for a full revocation before failing.
3085 update_fail_htlcs.push(update_fail_msg_option.unwrap())
3088 if let ChannelError::Ignore(_) = e {}
3090 panic!("Got a non-IgnoreError action trying to fail holding cell HTLC");
3097 if update_add_htlcs.is_empty() && update_fulfill_htlcs.is_empty() && update_fail_htlcs.is_empty() && self.holding_cell_update_fee.is_none() {
3098 return Ok((None, htlcs_to_fail));
3100 let update_fee = if let Some(feerate) = self.holding_cell_update_fee.take() {
3101 self.send_update_fee(feerate, logger)
3106 let (commitment_signed, mut additional_update) = self.send_commitment_no_status_check(logger)?;
3107 // send_commitment_no_status_check and get_update_fulfill_htlc may bump latest_monitor_id
3108 // but we want them to be strictly increasing by one, so reset it here.
3109 self.latest_monitor_update_id = monitor_update.update_id;
3110 monitor_update.updates.append(&mut additional_update.updates);
3112 log_debug!(logger, "Freeing holding cell in channel {} resulted in {}{} HTLCs added, {} HTLCs fulfilled, and {} HTLCs failed.",
3113 log_bytes!(self.channel_id()), if update_fee.is_some() { "a fee update, " } else { "" },
3114 update_add_htlcs.len(), update_fulfill_htlcs.len(), update_fail_htlcs.len());
3116 Ok((Some((msgs::CommitmentUpdate {
3118 update_fulfill_htlcs,
3120 update_fail_malformed_htlcs: Vec::new(),
3123 }, monitor_update)), htlcs_to_fail))
3125 Ok((None, Vec::new()))
3129 /// Handles receiving a remote's revoke_and_ack. Note that we may return a new
3130 /// commitment_signed message here in case we had pending outbound HTLCs to add which were
3131 /// waiting on this revoke_and_ack. The generation of this new commitment_signed may also fail,
3132 /// generating an appropriate error *after* the channel state has been updated based on the
3133 /// revoke_and_ack message.
3134 pub fn revoke_and_ack<L: Deref>(&mut self, msg: &msgs::RevokeAndACK, logger: &L) -> Result<RAAUpdates, ChannelError>
3135 where L::Target: Logger,
3137 if (self.channel_state & (ChannelState::ChannelFunded as u32)) != (ChannelState::ChannelFunded as u32) {
3138 return Err(ChannelError::Close("Got revoke/ACK message when channel was not in an operational state".to_owned()));
3140 if self.channel_state & (ChannelState::PeerDisconnected as u32) == ChannelState::PeerDisconnected as u32 {
3141 return Err(ChannelError::Close("Peer sent revoke_and_ack when we needed a channel_reestablish".to_owned()));
3143 if self.channel_state & BOTH_SIDES_SHUTDOWN_MASK == BOTH_SIDES_SHUTDOWN_MASK && self.last_sent_closing_fee.is_some() {
3144 return Err(ChannelError::Close("Peer sent revoke_and_ack after we'd started exchanging closing_signeds".to_owned()));
3147 let secret = secp_check!(SecretKey::from_slice(&msg.per_commitment_secret), "Peer provided an invalid per_commitment_secret".to_owned());
3149 if let Some(counterparty_prev_commitment_point) = self.counterparty_prev_commitment_point {
3150 if PublicKey::from_secret_key(&self.secp_ctx, &secret) != counterparty_prev_commitment_point {
3151 return Err(ChannelError::Close("Got a revoke commitment secret which didn't correspond to their current pubkey".to_owned()));
3155 if self.channel_state & ChannelState::AwaitingRemoteRevoke as u32 == 0 {
3156 // Our counterparty seems to have burned their coins to us (by revoking a state when we
3157 // haven't given them a new commitment transaction to broadcast). We should probably
3158 // take advantage of this by updating our channel monitor, sending them an error, and
3159 // waiting for them to broadcast their latest (now-revoked claim). But, that would be a
3160 // lot of work, and there's some chance this is all a misunderstanding anyway.
3161 // We have to do *something*, though, since our signer may get mad at us for otherwise
3162 // jumping a remote commitment number, so best to just force-close and move on.
3163 return Err(ChannelError::Close("Received an unexpected revoke_and_ack".to_owned()));
3166 #[cfg(any(test, fuzzing))]
3168 *self.next_local_commitment_tx_fee_info_cached.lock().unwrap() = None;
3169 *self.next_remote_commitment_tx_fee_info_cached.lock().unwrap() = None;
3172 self.holder_signer.validate_counterparty_revocation(
3173 self.cur_counterparty_commitment_transaction_number + 1,
3175 ).map_err(|_| ChannelError::Close("Failed to validate revocation from peer".to_owned()))?;
3177 self.commitment_secrets.provide_secret(self.cur_counterparty_commitment_transaction_number + 1, msg.per_commitment_secret)
3178 .map_err(|_| ChannelError::Close("Previous secrets did not match new one".to_owned()))?;
3179 self.latest_monitor_update_id += 1;
3180 let mut monitor_update = ChannelMonitorUpdate {
3181 update_id: self.latest_monitor_update_id,
3182 updates: vec![ChannelMonitorUpdateStep::CommitmentSecret {
3183 idx: self.cur_counterparty_commitment_transaction_number + 1,
3184 secret: msg.per_commitment_secret,
3188 // Update state now that we've passed all the can-fail calls...
3189 // (note that we may still fail to generate the new commitment_signed message, but that's
3190 // OK, we step the channel here and *then* if the new generation fails we can fail the
3191 // channel based on that, but stepping stuff here should be safe either way.
3192 self.channel_state &= !(ChannelState::AwaitingRemoteRevoke as u32);
3193 self.counterparty_prev_commitment_point = self.counterparty_cur_commitment_point;
3194 self.counterparty_cur_commitment_point = Some(msg.next_per_commitment_point);
3195 self.cur_counterparty_commitment_transaction_number -= 1;
3197 if self.announcement_sigs_state == AnnouncementSigsState::Committed {
3198 self.announcement_sigs_state = AnnouncementSigsState::PeerReceived;
3201 log_trace!(logger, "Updating HTLCs on receipt of RAA in channel {}...", log_bytes!(self.channel_id()));
3202 let mut to_forward_infos = Vec::new();
3203 let mut revoked_htlcs = Vec::new();
3204 let mut finalized_claimed_htlcs = Vec::new();
3205 let mut update_fail_htlcs = Vec::new();
3206 let mut update_fail_malformed_htlcs = Vec::new();
3207 let mut require_commitment = false;
3208 let mut value_to_self_msat_diff: i64 = 0;
3211 // Take references explicitly so that we can hold multiple references to self.
3212 let pending_inbound_htlcs: &mut Vec<_> = &mut self.pending_inbound_htlcs;
3213 let pending_outbound_htlcs: &mut Vec<_> = &mut self.pending_outbound_htlcs;
3215 // We really shouldnt have two passes here, but retain gives a non-mutable ref (Rust bug)
3216 pending_inbound_htlcs.retain(|htlc| {
3217 if let &InboundHTLCState::LocalRemoved(ref reason) = &htlc.state {
3218 log_trace!(logger, " ...removing inbound LocalRemoved {}", log_bytes!(htlc.payment_hash.0));
3219 if let &InboundHTLCRemovalReason::Fulfill(_) = reason {
3220 value_to_self_msat_diff += htlc.amount_msat as i64;
3225 pending_outbound_htlcs.retain(|htlc| {
3226 if let &OutboundHTLCState::AwaitingRemovedRemoteRevoke(ref outcome) = &htlc.state {
3227 log_trace!(logger, " ...removing outbound AwaitingRemovedRemoteRevoke {}", log_bytes!(htlc.payment_hash.0));
3228 if let OutboundHTLCOutcome::Failure(reason) = outcome.clone() { // We really want take() here, but, again, non-mut ref :(
3229 revoked_htlcs.push((htlc.source.clone(), htlc.payment_hash, reason));
3231 finalized_claimed_htlcs.push(htlc.source.clone());
3232 // They fulfilled, so we sent them money
3233 value_to_self_msat_diff -= htlc.amount_msat as i64;
3238 for htlc in pending_inbound_htlcs.iter_mut() {
3239 let swap = if let &InboundHTLCState::AwaitingRemoteRevokeToAnnounce(_) = &htlc.state {
3241 } else if let &InboundHTLCState::AwaitingAnnouncedRemoteRevoke(_) = &htlc.state {
3245 let mut state = InboundHTLCState::Committed;
3246 mem::swap(&mut state, &mut htlc.state);
3248 if let InboundHTLCState::AwaitingRemoteRevokeToAnnounce(forward_info) = state {
3249 log_trace!(logger, " ...promoting inbound AwaitingRemoteRevokeToAnnounce {} to AwaitingAnnouncedRemoteRevoke", log_bytes!(htlc.payment_hash.0));
3250 htlc.state = InboundHTLCState::AwaitingAnnouncedRemoteRevoke(forward_info);
3251 require_commitment = true;
3252 } else if let InboundHTLCState::AwaitingAnnouncedRemoteRevoke(forward_info) = state {
3253 match forward_info {
3254 PendingHTLCStatus::Fail(fail_msg) => {
3255 log_trace!(logger, " ...promoting inbound AwaitingAnnouncedRemoteRevoke {} to LocalRemoved due to PendingHTLCStatus indicating failure", log_bytes!(htlc.payment_hash.0));
3256 require_commitment = true;
3258 HTLCFailureMsg::Relay(msg) => {
3259 htlc.state = InboundHTLCState::LocalRemoved(InboundHTLCRemovalReason::FailRelay(msg.reason.clone()));
3260 update_fail_htlcs.push(msg)
3262 HTLCFailureMsg::Malformed(msg) => {
3263 htlc.state = InboundHTLCState::LocalRemoved(InboundHTLCRemovalReason::FailMalformed((msg.sha256_of_onion, msg.failure_code)));
3264 update_fail_malformed_htlcs.push(msg)
3268 PendingHTLCStatus::Forward(forward_info) => {
3269 log_trace!(logger, " ...promoting inbound AwaitingAnnouncedRemoteRevoke {} to Committed", log_bytes!(htlc.payment_hash.0));
3270 to_forward_infos.push((forward_info, htlc.htlc_id));
3271 htlc.state = InboundHTLCState::Committed;
3277 for htlc in pending_outbound_htlcs.iter_mut() {
3278 if let OutboundHTLCState::LocalAnnounced(_) = htlc.state {
3279 log_trace!(logger, " ...promoting outbound LocalAnnounced {} to Committed", log_bytes!(htlc.payment_hash.0));
3280 htlc.state = OutboundHTLCState::Committed;
3282 if let &mut OutboundHTLCState::AwaitingRemoteRevokeToRemove(ref mut outcome) = &mut htlc.state {
3283 log_trace!(logger, " ...promoting outbound AwaitingRemoteRevokeToRemove {} to AwaitingRemovedRemoteRevoke", log_bytes!(htlc.payment_hash.0));
3284 // Grab the preimage, if it exists, instead of cloning
3285 let mut reason = OutboundHTLCOutcome::Success(None);
3286 mem::swap(outcome, &mut reason);
3287 htlc.state = OutboundHTLCState::AwaitingRemovedRemoteRevoke(reason);
3288 require_commitment = true;
3292 self.value_to_self_msat = (self.value_to_self_msat as i64 + value_to_self_msat_diff) as u64;
3294 if let Some((feerate, update_state)) = self.pending_update_fee {
3295 match update_state {
3296 FeeUpdateState::Outbound => {
3297 debug_assert!(self.is_outbound());
3298 log_trace!(logger, " ...promoting outbound fee update {} to Committed", feerate);
3299 self.feerate_per_kw = feerate;
3300 self.pending_update_fee = None;
3302 FeeUpdateState::RemoteAnnounced => { debug_assert!(!self.is_outbound()); },
3303 FeeUpdateState::AwaitingRemoteRevokeToAnnounce => {
3304 debug_assert!(!self.is_outbound());
3305 log_trace!(logger, " ...promoting inbound AwaitingRemoteRevokeToAnnounce fee update {} to Committed", feerate);
3306 require_commitment = true;
3307 self.feerate_per_kw = feerate;
3308 self.pending_update_fee = None;
3313 if (self.channel_state & ChannelState::MonitorUpdateFailed as u32) == ChannelState::MonitorUpdateFailed as u32 {
3314 // We can't actually generate a new commitment transaction (incl by freeing holding
3315 // cells) while we can't update the monitor, so we just return what we have.
3316 if require_commitment {
3317 self.monitor_pending_commitment_signed = true;
3318 // When the monitor updating is restored we'll call get_last_commitment_update(),
3319 // which does not update state, but we're definitely now awaiting a remote revoke
3320 // before we can step forward any more, so set it here.
3321 let (_, mut additional_update) = self.send_commitment_no_status_check(logger)?;
3322 // send_commitment_no_status_check may bump latest_monitor_id but we want them to be
3323 // strictly increasing by one, so decrement it here.
3324 self.latest_monitor_update_id = monitor_update.update_id;
3325 monitor_update.updates.append(&mut additional_update.updates);
3327 self.monitor_pending_forwards.append(&mut to_forward_infos);
3328 self.monitor_pending_failures.append(&mut revoked_htlcs);
3329 self.monitor_pending_finalized_fulfills.append(&mut finalized_claimed_htlcs);
3330 log_debug!(logger, "Received a valid revoke_and_ack for channel {} but awaiting a monitor update resolution to reply.", log_bytes!(self.channel_id()));
3331 return Ok(RAAUpdates {
3332 commitment_update: None, finalized_claimed_htlcs: Vec::new(),
3333 accepted_htlcs: Vec::new(), failed_htlcs: Vec::new(),
3335 holding_cell_failed_htlcs: Vec::new()
3339 match self.free_holding_cell_htlcs(logger)? {
3340 (Some((mut commitment_update, mut additional_update)), htlcs_to_fail) => {
3341 commitment_update.update_fail_htlcs.reserve(update_fail_htlcs.len());
3342 for fail_msg in update_fail_htlcs.drain(..) {
3343 commitment_update.update_fail_htlcs.push(fail_msg);
3345 commitment_update.update_fail_malformed_htlcs.reserve(update_fail_malformed_htlcs.len());
3346 for fail_msg in update_fail_malformed_htlcs.drain(..) {
3347 commitment_update.update_fail_malformed_htlcs.push(fail_msg);
3350 // free_holding_cell_htlcs may bump latest_monitor_id multiple times but we want them to be
3351 // strictly increasing by one, so decrement it here.
3352 self.latest_monitor_update_id = monitor_update.update_id;
3353 monitor_update.updates.append(&mut additional_update.updates);
3356 commitment_update: Some(commitment_update),
3357 finalized_claimed_htlcs,
3358 accepted_htlcs: to_forward_infos,
3359 failed_htlcs: revoked_htlcs,
3361 holding_cell_failed_htlcs: htlcs_to_fail
3364 (None, htlcs_to_fail) => {
3365 if require_commitment {
3366 let (commitment_signed, mut additional_update) = self.send_commitment_no_status_check(logger)?;
3368 // send_commitment_no_status_check may bump latest_monitor_id but we want them to be
3369 // strictly increasing by one, so decrement it here.
3370 self.latest_monitor_update_id = monitor_update.update_id;
3371 monitor_update.updates.append(&mut additional_update.updates);
3373 log_debug!(logger, "Received a valid revoke_and_ack for channel {}. Responding with a commitment update with {} HTLCs failed.",
3374 log_bytes!(self.channel_id()), update_fail_htlcs.len() + update_fail_malformed_htlcs.len());
3376 commitment_update: Some(msgs::CommitmentUpdate {
3377 update_add_htlcs: Vec::new(),
3378 update_fulfill_htlcs: Vec::new(),
3380 update_fail_malformed_htlcs,
3384 finalized_claimed_htlcs,
3385 accepted_htlcs: to_forward_infos, failed_htlcs: revoked_htlcs,
3386 monitor_update, holding_cell_failed_htlcs: htlcs_to_fail
3389 log_debug!(logger, "Received a valid revoke_and_ack for channel {} with no reply necessary.", log_bytes!(self.channel_id()));
3391 commitment_update: None,
3392 finalized_claimed_htlcs,
3393 accepted_htlcs: to_forward_infos, failed_htlcs: revoked_htlcs,
3394 monitor_update, holding_cell_failed_htlcs: htlcs_to_fail
3401 /// Adds a pending update to this channel. See the doc for send_htlc for
3402 /// further details on the optionness of the return value.
3403 /// If our balance is too low to cover the cost of the next commitment transaction at the
3404 /// new feerate, the update is cancelled.
3405 /// You MUST call send_commitment prior to any other calls on this Channel
3406 fn send_update_fee<L: Deref>(&mut self, feerate_per_kw: u32, logger: &L) -> Option<msgs::UpdateFee> where L::Target: Logger {
3407 if !self.is_outbound() {
3408 panic!("Cannot send fee from inbound channel");
3410 if !self.is_usable() {
3411 panic!("Cannot update fee until channel is fully established and we haven't started shutting down");
3413 if !self.is_live() {
3414 panic!("Cannot update fee while peer is disconnected/we're awaiting a monitor update (ChannelManager should have caught this)");
3417 // Before proposing a feerate update, check that we can actually afford the new fee.
3418 let inbound_stats = self.get_inbound_pending_htlc_stats(Some(feerate_per_kw));
3419 let outbound_stats = self.get_outbound_pending_htlc_stats(Some(feerate_per_kw));
3420 let keys = if let Ok(keys) = self.build_holder_transaction_keys(self.cur_holder_commitment_transaction_number) { keys } else { return None; };
3421 let commitment_stats = self.build_commitment_transaction(self.cur_holder_commitment_transaction_number, &keys, true, true, logger);
3422 let buffer_fee_msat = Channel::<Signer>::commit_tx_fee_sat(feerate_per_kw, commitment_stats.num_nondust_htlcs + outbound_stats.on_holder_tx_holding_cell_htlcs_count as usize + CONCURRENT_INBOUND_HTLC_FEE_BUFFER as usize, self.opt_anchors()) * 1000;
3423 let holder_balance_msat = commitment_stats.local_balance_msat - outbound_stats.holding_cell_msat;
3424 if holder_balance_msat < buffer_fee_msat + self.counterparty_selected_channel_reserve_satoshis.unwrap() * 1000 {
3425 //TODO: auto-close after a number of failures?
3426 log_debug!(logger, "Cannot afford to send new feerate at {}", feerate_per_kw);
3430 // Note, we evaluate pending htlc "preemptive" trimmed-to-dust threshold at the proposed `feerate_per_kw`.
3431 let holder_tx_dust_exposure = inbound_stats.on_holder_tx_dust_exposure_msat + outbound_stats.on_holder_tx_dust_exposure_msat;
3432 let counterparty_tx_dust_exposure = inbound_stats.on_counterparty_tx_dust_exposure_msat + outbound_stats.on_counterparty_tx_dust_exposure_msat;
3433 if holder_tx_dust_exposure > self.get_max_dust_htlc_exposure_msat() {
3434 log_debug!(logger, "Cannot afford to send new feerate at {} without infringing max dust htlc exposure", feerate_per_kw);
3437 if counterparty_tx_dust_exposure > self.get_max_dust_htlc_exposure_msat() {
3438 log_debug!(logger, "Cannot afford to send new feerate at {} without infringing max dust htlc exposure", feerate_per_kw);
3442 if (self.channel_state & (ChannelState::AwaitingRemoteRevoke as u32 | ChannelState::MonitorUpdateFailed as u32)) != 0 {
3443 self.holding_cell_update_fee = Some(feerate_per_kw);
3447 debug_assert!(self.pending_update_fee.is_none());
3448 self.pending_update_fee = Some((feerate_per_kw, FeeUpdateState::Outbound));
3450 Some(msgs::UpdateFee {
3451 channel_id: self.channel_id,
3456 pub fn send_update_fee_and_commit<L: Deref>(&mut self, feerate_per_kw: u32, logger: &L) -> Result<Option<(msgs::UpdateFee, msgs::CommitmentSigned, ChannelMonitorUpdate)>, ChannelError> where L::Target: Logger {
3457 match self.send_update_fee(feerate_per_kw, logger) {
3458 Some(update_fee) => {
3459 let (commitment_signed, monitor_update) = self.send_commitment_no_status_check(logger)?;
3460 Ok(Some((update_fee, commitment_signed, monitor_update)))
3466 /// Removes any uncommitted inbound HTLCs and resets the state of uncommitted outbound HTLC
3467 /// updates, to be used on peer disconnection. After this, update_*_htlc messages need to be
3469 /// No further message handling calls may be made until a channel_reestablish dance has
3471 pub fn remove_uncommitted_htlcs_and_mark_paused<L: Deref>(&mut self, logger: &L) where L::Target: Logger {
3472 assert_eq!(self.channel_state & ChannelState::ShutdownComplete as u32, 0);
3473 if self.channel_state < ChannelState::FundingSent as u32 {
3474 self.channel_state = ChannelState::ShutdownComplete as u32;
3478 if self.announcement_sigs_state == AnnouncementSigsState::MessageSent || self.announcement_sigs_state == AnnouncementSigsState::Committed {
3479 self.announcement_sigs_state = AnnouncementSigsState::NotSent;
3482 // Upon reconnect we have to start the closing_signed dance over, but shutdown messages
3483 // will be retransmitted.
3484 self.last_sent_closing_fee = None;
3485 self.pending_counterparty_closing_signed = None;
3486 self.closing_fee_limits = None;
3488 let mut inbound_drop_count = 0;
3489 self.pending_inbound_htlcs.retain(|htlc| {
3491 InboundHTLCState::RemoteAnnounced(_) => {
3492 // They sent us an update_add_htlc but we never got the commitment_signed.
3493 // We'll tell them what commitment_signed we're expecting next and they'll drop
3494 // this HTLC accordingly
3495 inbound_drop_count += 1;
3498 InboundHTLCState::AwaitingRemoteRevokeToAnnounce(_)|InboundHTLCState::AwaitingAnnouncedRemoteRevoke(_) => {
3499 // We received a commitment_signed updating this HTLC and (at least hopefully)
3500 // sent a revoke_and_ack (which we can re-transmit) and have heard nothing
3501 // in response to it yet, so don't touch it.
3504 InboundHTLCState::Committed => true,
3505 InboundHTLCState::LocalRemoved(_) => {
3506 // We (hopefully) sent a commitment_signed updating this HTLC (which we can
3507 // re-transmit if needed) and they may have even sent a revoke_and_ack back
3508 // (that we missed). Keep this around for now and if they tell us they missed
3509 // the commitment_signed we can re-transmit the update then.
3514 self.next_counterparty_htlc_id -= inbound_drop_count;
3516 if let Some((_, update_state)) = self.pending_update_fee {
3517 if update_state == FeeUpdateState::RemoteAnnounced {
3518 debug_assert!(!self.is_outbound());
3519 self.pending_update_fee = None;
3523 for htlc in self.pending_outbound_htlcs.iter_mut() {
3524 if let OutboundHTLCState::RemoteRemoved(_) = htlc.state {
3525 // They sent us an update to remove this but haven't yet sent the corresponding
3526 // commitment_signed, we need to move it back to Committed and they can re-send
3527 // the update upon reconnection.
3528 htlc.state = OutboundHTLCState::Committed;
3532 self.channel_state |= ChannelState::PeerDisconnected as u32;
3533 log_trace!(logger, "Peer disconnection resulted in {} remote-announced HTLC drops on channel {}", inbound_drop_count, log_bytes!(self.channel_id()));
3536 /// Indicates that a ChannelMonitor update failed to be stored by the client and further
3537 /// updates are partially paused.
3538 /// This must be called immediately after the call which generated the ChannelMonitor update
3539 /// which failed. The messages which were generated from that call which generated the
3540 /// monitor update failure must *not* have been sent to the remote end, and must instead
3541 /// have been dropped. They will be regenerated when monitor_updating_restored is called.
3542 pub fn monitor_update_failed(&mut self, resend_raa: bool, resend_commitment: bool,
3543 mut pending_forwards: Vec<(PendingHTLCInfo, u64)>,
3544 mut pending_fails: Vec<(HTLCSource, PaymentHash, HTLCFailReason)>,
3545 mut pending_finalized_claimed_htlcs: Vec<HTLCSource>
3547 self.monitor_pending_revoke_and_ack |= resend_raa;
3548 self.monitor_pending_commitment_signed |= resend_commitment;
3549 self.monitor_pending_forwards.append(&mut pending_forwards);
3550 self.monitor_pending_failures.append(&mut pending_fails);
3551 self.monitor_pending_finalized_fulfills.append(&mut pending_finalized_claimed_htlcs);
3552 self.channel_state |= ChannelState::MonitorUpdateFailed as u32;
3555 /// Indicates that the latest ChannelMonitor update has been committed by the client
3556 /// successfully and we should restore normal operation. Returns messages which should be sent
3557 /// to the remote side.
3558 pub fn monitor_updating_restored<L: Deref>(&mut self, logger: &L, node_pk: PublicKey, genesis_block_hash: BlockHash, best_block_height: u32) -> MonitorRestoreUpdates where L::Target: Logger {
3559 assert_eq!(self.channel_state & ChannelState::MonitorUpdateFailed as u32, ChannelState::MonitorUpdateFailed as u32);
3560 self.channel_state &= !(ChannelState::MonitorUpdateFailed as u32);
3562 let funding_broadcastable = if self.channel_state & (ChannelState::FundingSent as u32) != 0 && self.is_outbound() {
3563 self.funding_transaction.take()
3566 // We will never broadcast the funding transaction when we're in MonitorUpdateFailed (and
3567 // we assume the user never directly broadcasts the funding transaction and waits for us to
3568 // do it). Thus, we can only ever hit monitor_pending_funding_locked when we're an inbound
3569 // channel which failed to persist the monitor on funding_created, and we got the funding
3570 // transaction confirmed before the monitor was persisted.
3571 let funding_locked = if self.monitor_pending_funding_locked {
3572 assert!(!self.is_outbound(), "Funding transaction broadcast by the local client before it should have - LDK didn't do it!");
3573 self.monitor_pending_funding_locked = false;
3574 let next_per_commitment_point = self.holder_signer.get_per_commitment_point(self.cur_holder_commitment_transaction_number, &self.secp_ctx);
3575 Some(msgs::FundingLocked {
3576 channel_id: self.channel_id(),
3577 next_per_commitment_point,
3578 short_channel_id_alias: Some(self.outbound_scid_alias),
3582 let announcement_sigs = self.get_announcement_sigs(node_pk, genesis_block_hash, best_block_height, logger);
3584 let mut accepted_htlcs = Vec::new();
3585 mem::swap(&mut accepted_htlcs, &mut self.monitor_pending_forwards);
3586 let mut failed_htlcs = Vec::new();
3587 mem::swap(&mut failed_htlcs, &mut self.monitor_pending_failures);
3588 let mut finalized_claimed_htlcs = Vec::new();
3589 mem::swap(&mut finalized_claimed_htlcs, &mut self.monitor_pending_finalized_fulfills);
3591 if self.channel_state & (ChannelState::PeerDisconnected as u32) != 0 {
3592 self.monitor_pending_revoke_and_ack = false;
3593 self.monitor_pending_commitment_signed = false;
3594 return MonitorRestoreUpdates {
3595 raa: None, commitment_update: None, order: RAACommitmentOrder::RevokeAndACKFirst,
3596 accepted_htlcs, failed_htlcs, finalized_claimed_htlcs, funding_broadcastable, funding_locked, announcement_sigs
3600 let raa = if self.monitor_pending_revoke_and_ack {
3601 Some(self.get_last_revoke_and_ack())
3603 let commitment_update = if self.monitor_pending_commitment_signed {
3604 Some(self.get_last_commitment_update(logger))
3607 self.monitor_pending_revoke_and_ack = false;
3608 self.monitor_pending_commitment_signed = false;
3609 let order = self.resend_order.clone();
3610 log_debug!(logger, "Restored monitor updating in channel {} resulting in {}{} commitment update and {} RAA, with {} first",
3611 log_bytes!(self.channel_id()), if funding_broadcastable.is_some() { "a funding broadcastable, " } else { "" },
3612 if commitment_update.is_some() { "a" } else { "no" }, if raa.is_some() { "an" } else { "no" },
3613 match order { RAACommitmentOrder::CommitmentFirst => "commitment", RAACommitmentOrder::RevokeAndACKFirst => "RAA"});
3614 MonitorRestoreUpdates {
3615 raa, commitment_update, order, accepted_htlcs, failed_htlcs, finalized_claimed_htlcs, funding_broadcastable, funding_locked, announcement_sigs
3619 pub fn update_fee<F: Deref>(&mut self, fee_estimator: &F, msg: &msgs::UpdateFee) -> Result<(), ChannelError>
3620 where F::Target: FeeEstimator
3622 if self.is_outbound() {
3623 return Err(ChannelError::Close("Non-funding remote tried to update channel fee".to_owned()));
3625 if self.channel_state & (ChannelState::PeerDisconnected as u32) == ChannelState::PeerDisconnected as u32 {
3626 return Err(ChannelError::Close("Peer sent update_fee when we needed a channel_reestablish".to_owned()));
3628 Channel::<Signer>::check_remote_fee(fee_estimator, msg.feerate_per_kw)?;
3629 let feerate_over_dust_buffer = msg.feerate_per_kw > self.get_dust_buffer_feerate(None);
3631 self.pending_update_fee = Some((msg.feerate_per_kw, FeeUpdateState::RemoteAnnounced));
3632 self.update_time_counter += 1;
3633 // If the feerate has increased over the previous dust buffer (note that
3634 // `get_dust_buffer_feerate` considers the `pending_update_fee` status), check that we
3635 // won't be pushed over our dust exposure limit by the feerate increase.
3636 if feerate_over_dust_buffer {
3637 let inbound_stats = self.get_inbound_pending_htlc_stats(None);
3638 let outbound_stats = self.get_outbound_pending_htlc_stats(None);
3639 let holder_tx_dust_exposure = inbound_stats.on_holder_tx_dust_exposure_msat + outbound_stats.on_holder_tx_dust_exposure_msat;
3640 let counterparty_tx_dust_exposure = inbound_stats.on_counterparty_tx_dust_exposure_msat + outbound_stats.on_counterparty_tx_dust_exposure_msat;
3641 if holder_tx_dust_exposure > self.get_max_dust_htlc_exposure_msat() {
3642 return Err(ChannelError::Close(format!("Peer sent update_fee with a feerate ({}) which may over-expose us to dust-in-flight on our own transactions (totaling {} msat)",
3643 msg.feerate_per_kw, holder_tx_dust_exposure)));
3645 if counterparty_tx_dust_exposure > self.get_max_dust_htlc_exposure_msat() {
3646 return Err(ChannelError::Close(format!("Peer sent update_fee with a feerate ({}) which may over-expose us to dust-in-flight on our counterparty's transactions (totaling {} msat)",
3647 msg.feerate_per_kw, counterparty_tx_dust_exposure)));
3653 fn get_last_revoke_and_ack(&self) -> msgs::RevokeAndACK {
3654 let next_per_commitment_point = self.holder_signer.get_per_commitment_point(self.cur_holder_commitment_transaction_number, &self.secp_ctx);
3655 let per_commitment_secret = self.holder_signer.release_commitment_secret(self.cur_holder_commitment_transaction_number + 2);
3656 msgs::RevokeAndACK {
3657 channel_id: self.channel_id,
3658 per_commitment_secret,
3659 next_per_commitment_point,
3663 fn get_last_commitment_update<L: Deref>(&self, logger: &L) -> msgs::CommitmentUpdate where L::Target: Logger {
3664 let mut update_add_htlcs = Vec::new();
3665 let mut update_fulfill_htlcs = Vec::new();
3666 let mut update_fail_htlcs = Vec::new();
3667 let mut update_fail_malformed_htlcs = Vec::new();
3669 for htlc in self.pending_outbound_htlcs.iter() {
3670 if let &OutboundHTLCState::LocalAnnounced(ref onion_packet) = &htlc.state {
3671 update_add_htlcs.push(msgs::UpdateAddHTLC {
3672 channel_id: self.channel_id(),
3673 htlc_id: htlc.htlc_id,
3674 amount_msat: htlc.amount_msat,
3675 payment_hash: htlc.payment_hash,
3676 cltv_expiry: htlc.cltv_expiry,
3677 onion_routing_packet: (**onion_packet).clone(),
3682 for htlc in self.pending_inbound_htlcs.iter() {
3683 if let &InboundHTLCState::LocalRemoved(ref reason) = &htlc.state {
3685 &InboundHTLCRemovalReason::FailRelay(ref err_packet) => {
3686 update_fail_htlcs.push(msgs::UpdateFailHTLC {
3687 channel_id: self.channel_id(),
3688 htlc_id: htlc.htlc_id,
3689 reason: err_packet.clone()
3692 &InboundHTLCRemovalReason::FailMalformed((ref sha256_of_onion, ref failure_code)) => {
3693 update_fail_malformed_htlcs.push(msgs::UpdateFailMalformedHTLC {
3694 channel_id: self.channel_id(),
3695 htlc_id: htlc.htlc_id,
3696 sha256_of_onion: sha256_of_onion.clone(),
3697 failure_code: failure_code.clone(),
3700 &InboundHTLCRemovalReason::Fulfill(ref payment_preimage) => {
3701 update_fulfill_htlcs.push(msgs::UpdateFulfillHTLC {
3702 channel_id: self.channel_id(),
3703 htlc_id: htlc.htlc_id,
3704 payment_preimage: payment_preimage.clone(),
3711 let update_fee = if self.is_outbound() && self.pending_update_fee.is_some() {
3712 Some(msgs::UpdateFee {
3713 channel_id: self.channel_id(),
3714 feerate_per_kw: self.pending_update_fee.unwrap().0,
3718 log_trace!(logger, "Regenerated latest commitment update in channel {} with{} {} update_adds, {} update_fulfills, {} update_fails, and {} update_fail_malformeds",
3719 log_bytes!(self.channel_id()), if update_fee.is_some() { " update_fee," } else { "" },
3720 update_add_htlcs.len(), update_fulfill_htlcs.len(), update_fail_htlcs.len(), update_fail_malformed_htlcs.len());
3721 msgs::CommitmentUpdate {
3722 update_add_htlcs, update_fulfill_htlcs, update_fail_htlcs, update_fail_malformed_htlcs, update_fee,
3723 commitment_signed: self.send_commitment_no_state_update(logger).expect("It looks like we failed to re-generate a commitment_signed we had previously sent?").0,
3727 /// May panic if some calls other than message-handling calls (which will all Err immediately)
3728 /// have been called between remove_uncommitted_htlcs_and_mark_paused and this call.
3729 pub fn channel_reestablish<L: Deref>(&mut self, msg: &msgs::ChannelReestablish, logger: &L,
3730 node_pk: PublicKey, genesis_block_hash: BlockHash, best_block: &BestBlock)
3731 -> Result<ReestablishResponses, ChannelError> where L::Target: Logger {
3732 if self.channel_state & (ChannelState::PeerDisconnected as u32) == 0 {
3733 // While BOLT 2 doesn't indicate explicitly we should error this channel here, it
3734 // almost certainly indicates we are going to end up out-of-sync in some way, so we
3735 // just close here instead of trying to recover.
3736 return Err(ChannelError::Close("Peer sent a loose channel_reestablish not after reconnect".to_owned()));
3739 if msg.next_local_commitment_number >= INITIAL_COMMITMENT_NUMBER || msg.next_remote_commitment_number >= INITIAL_COMMITMENT_NUMBER ||
3740 msg.next_local_commitment_number == 0 {
3741 return Err(ChannelError::Close("Peer sent a garbage channel_reestablish".to_owned()));
3744 if msg.next_remote_commitment_number > 0 {
3745 match msg.data_loss_protect {
3746 OptionalField::Present(ref data_loss) => {
3747 let expected_point = self.holder_signer.get_per_commitment_point(INITIAL_COMMITMENT_NUMBER - msg.next_remote_commitment_number + 1, &self.secp_ctx);
3748 let given_secret = SecretKey::from_slice(&data_loss.your_last_per_commitment_secret)
3749 .map_err(|_| ChannelError::Close("Peer sent a garbage channel_reestablish with unparseable secret key".to_owned()))?;
3750 if expected_point != PublicKey::from_secret_key(&self.secp_ctx, &given_secret) {
3751 return Err(ChannelError::Close("Peer sent a garbage channel_reestablish with secret key not matching the commitment height provided".to_owned()));
3753 if msg.next_remote_commitment_number > INITIAL_COMMITMENT_NUMBER - self.cur_holder_commitment_transaction_number {
3754 return Err(ChannelError::CloseDelayBroadcast(
3755 "We have fallen behind - we have received proof that if we broadcast remote is going to claim our funds - we can't do any automated broadcasting".to_owned()
3759 OptionalField::Absent => {}
3763 // Before we change the state of the channel, we check if the peer is sending a very old
3764 // commitment transaction number, if yes we send a warning message.
3765 let our_commitment_transaction = INITIAL_COMMITMENT_NUMBER - self.cur_holder_commitment_transaction_number - 1;
3766 if msg.next_remote_commitment_number + 1 < our_commitment_transaction {
3768 ChannelError::Warn(format!("Peer attempted to reestablish channel with a very old local commitment transaction: {} (received) vs {} (expected)", msg.next_remote_commitment_number, our_commitment_transaction))
3772 // Go ahead and unmark PeerDisconnected as various calls we may make check for it (and all
3773 // remaining cases either succeed or ErrorMessage-fail).
3774 self.channel_state &= !(ChannelState::PeerDisconnected as u32);
3776 let shutdown_msg = if self.channel_state & (ChannelState::LocalShutdownSent as u32) != 0 {
3777 assert!(self.shutdown_scriptpubkey.is_some());
3778 Some(msgs::Shutdown {
3779 channel_id: self.channel_id,
3780 scriptpubkey: self.get_closing_scriptpubkey(),
3784 let announcement_sigs = self.get_announcement_sigs(node_pk, genesis_block_hash, best_block.height(), logger);
3786 if self.channel_state & (ChannelState::FundingSent as u32) == ChannelState::FundingSent as u32 {
3787 // If we're waiting on a monitor update, we shouldn't re-send any funding_locked's.
3788 if self.channel_state & (ChannelState::OurFundingLocked as u32) == 0 ||
3789 self.channel_state & (ChannelState::MonitorUpdateFailed as u32) != 0 {
3790 if msg.next_remote_commitment_number != 0 {
3791 return Err(ChannelError::Close("Peer claimed they saw a revoke_and_ack but we haven't sent funding_locked yet".to_owned()));
3793 // Short circuit the whole handler as there is nothing we can resend them
3794 return Ok(ReestablishResponses {
3795 funding_locked: None,
3796 raa: None, commitment_update: None, mon_update: None,
3797 order: RAACommitmentOrder::CommitmentFirst,
3798 holding_cell_failed_htlcs: Vec::new(),
3799 shutdown_msg, announcement_sigs,
3803 // We have OurFundingLocked set!
3804 let next_per_commitment_point = self.holder_signer.get_per_commitment_point(self.cur_holder_commitment_transaction_number, &self.secp_ctx);
3805 return Ok(ReestablishResponses {
3806 funding_locked: Some(msgs::FundingLocked {
3807 channel_id: self.channel_id(),
3808 next_per_commitment_point,
3809 short_channel_id_alias: Some(self.outbound_scid_alias),
3811 raa: None, commitment_update: None, mon_update: None,
3812 order: RAACommitmentOrder::CommitmentFirst,
3813 holding_cell_failed_htlcs: Vec::new(),
3814 shutdown_msg, announcement_sigs,
3818 let required_revoke = if msg.next_remote_commitment_number + 1 == INITIAL_COMMITMENT_NUMBER - self.cur_holder_commitment_transaction_number {
3819 // Remote isn't waiting on any RevokeAndACK from us!
3820 // Note that if we need to repeat our FundingLocked we'll do that in the next if block.
3822 } else if msg.next_remote_commitment_number + 1 == (INITIAL_COMMITMENT_NUMBER - 1) - self.cur_holder_commitment_transaction_number {
3823 if self.channel_state & (ChannelState::MonitorUpdateFailed as u32) != 0 {
3824 self.monitor_pending_revoke_and_ack = true;
3827 Some(self.get_last_revoke_and_ack())
3830 return Err(ChannelError::Close("Peer attempted to reestablish channel with a very old local commitment transaction".to_owned()));
3833 // We increment cur_counterparty_commitment_transaction_number only upon receipt of
3834 // revoke_and_ack, not on sending commitment_signed, so we add one if have
3835 // AwaitingRemoteRevoke set, which indicates we sent a commitment_signed but haven't gotten
3836 // the corresponding revoke_and_ack back yet.
3837 let next_counterparty_commitment_number = INITIAL_COMMITMENT_NUMBER - self.cur_counterparty_commitment_transaction_number + if (self.channel_state & ChannelState::AwaitingRemoteRevoke as u32) != 0 { 1 } else { 0 };
3839 let funding_locked = if msg.next_local_commitment_number == 1 && INITIAL_COMMITMENT_NUMBER - self.cur_holder_commitment_transaction_number == 1 {
3840 // We should never have to worry about MonitorUpdateFailed resending FundingLocked
3841 let next_per_commitment_point = self.holder_signer.get_per_commitment_point(self.cur_holder_commitment_transaction_number, &self.secp_ctx);
3842 Some(msgs::FundingLocked {
3843 channel_id: self.channel_id(),
3844 next_per_commitment_point,
3845 short_channel_id_alias: Some(self.outbound_scid_alias),
3849 if msg.next_local_commitment_number == next_counterparty_commitment_number {
3850 if required_revoke.is_some() {
3851 log_debug!(logger, "Reconnected channel {} with only lost outbound RAA", log_bytes!(self.channel_id()));
3853 log_debug!(logger, "Reconnected channel {} with no loss", log_bytes!(self.channel_id()));
3856 if (self.channel_state & (ChannelState::AwaitingRemoteRevoke as u32 | ChannelState::MonitorUpdateFailed as u32)) == 0 {
3857 // We're up-to-date and not waiting on a remote revoke (if we are our
3858 // channel_reestablish should result in them sending a revoke_and_ack), but we may
3859 // have received some updates while we were disconnected. Free the holding cell
3861 match self.free_holding_cell_htlcs(logger) {
3862 Err(ChannelError::Close(msg)) => Err(ChannelError::Close(msg)),
3863 Err(ChannelError::Warn(_)) | Err(ChannelError::Ignore(_)) | Err(ChannelError::CloseDelayBroadcast(_)) =>
3864 panic!("Got non-channel-failing result from free_holding_cell_htlcs"),
3865 Ok((Some((commitment_update, monitor_update)), holding_cell_failed_htlcs)) => {
3866 Ok(ReestablishResponses {
3867 funding_locked, shutdown_msg, announcement_sigs,
3868 raa: required_revoke,
3869 commitment_update: Some(commitment_update),
3870 order: self.resend_order.clone(),
3871 mon_update: Some(monitor_update),
3872 holding_cell_failed_htlcs,
3875 Ok((None, holding_cell_failed_htlcs)) => {
3876 Ok(ReestablishResponses {
3877 funding_locked, shutdown_msg, announcement_sigs,
3878 raa: required_revoke,
3879 commitment_update: None,
3880 order: self.resend_order.clone(),
3882 holding_cell_failed_htlcs,
3887 Ok(ReestablishResponses {
3888 funding_locked, shutdown_msg, announcement_sigs,
3889 raa: required_revoke,
3890 commitment_update: None,
3891 order: self.resend_order.clone(),
3893 holding_cell_failed_htlcs: Vec::new(),
3896 } else if msg.next_local_commitment_number == next_counterparty_commitment_number - 1 {
3897 if required_revoke.is_some() {
3898 log_debug!(logger, "Reconnected channel {} with lost outbound RAA and lost remote commitment tx", log_bytes!(self.channel_id()));
3900 log_debug!(logger, "Reconnected channel {} with only lost remote commitment tx", log_bytes!(self.channel_id()));
3903 if self.channel_state & (ChannelState::MonitorUpdateFailed as u32) != 0 {
3904 self.monitor_pending_commitment_signed = true;
3905 Ok(ReestablishResponses {
3906 funding_locked, shutdown_msg, announcement_sigs,
3907 commitment_update: None, raa: None, mon_update: None,
3908 order: self.resend_order.clone(),
3909 holding_cell_failed_htlcs: Vec::new(),
3912 Ok(ReestablishResponses {
3913 funding_locked, shutdown_msg, announcement_sigs,
3914 raa: required_revoke,
3915 commitment_update: Some(self.get_last_commitment_update(logger)),
3916 order: self.resend_order.clone(),
3918 holding_cell_failed_htlcs: Vec::new(),
3922 Err(ChannelError::Close("Peer attempted to reestablish channel with a very old remote commitment transaction".to_owned()))
3926 /// Calculates and returns our minimum and maximum closing transaction fee amounts, in whole
3927 /// satoshis. The amounts remain consistent unless a peer disconnects/reconnects or we restart,
3928 /// at which point they will be recalculated.
3929 fn calculate_closing_fee_limits<F: Deref>(&mut self, fee_estimator: &F) -> (u64, u64)
3930 where F::Target: FeeEstimator
3932 if let Some((min, max)) = self.closing_fee_limits { return (min, max); }
3934 // Propose a range from our current Background feerate to our Normal feerate plus our
3935 // force_close_avoidance_max_fee_satoshis.
3936 // If we fail to come to consensus, we'll have to force-close.
3937 let mut proposed_feerate = fee_estimator.get_est_sat_per_1000_weight(ConfirmationTarget::Background);
3938 let normal_feerate = fee_estimator.get_est_sat_per_1000_weight(ConfirmationTarget::Normal);
3939 let mut proposed_max_feerate = if self.is_outbound() { normal_feerate } else { u32::max_value() };
3941 // The spec requires that (when the channel does not have anchors) we only send absolute
3942 // channel fees no greater than the absolute channel fee on the current commitment
3943 // transaction. It's unclear *which* commitment transaction this refers to, and there isn't
3944 // very good reason to apply such a limit in any case. We don't bother doing so, risking
3945 // some force-closure by old nodes, but we wanted to close the channel anyway.
3947 if let Some(target_feerate) = self.target_closing_feerate_sats_per_kw {
3948 let min_feerate = if self.is_outbound() { target_feerate } else { cmp::min(self.feerate_per_kw, target_feerate) };
3949 proposed_feerate = cmp::max(proposed_feerate, min_feerate);
3950 proposed_max_feerate = cmp::max(proposed_max_feerate, min_feerate);
3953 // Note that technically we could end up with a lower minimum fee if one sides' balance is
3954 // below our dust limit, causing the output to disappear. We don't bother handling this
3955 // case, however, as this should only happen if a channel is closed before any (material)
3956 // payments have been made on it. This may cause slight fee overpayment and/or failure to
3957 // come to consensus with our counterparty on appropriate fees, however it should be a
3958 // relatively rare case. We can revisit this later, though note that in order to determine
3959 // if the funders' output is dust we have to know the absolute fee we're going to use.
3960 let tx_weight = self.get_closing_transaction_weight(Some(&self.get_closing_scriptpubkey()), Some(self.counterparty_shutdown_scriptpubkey.as_ref().unwrap()));
3961 let proposed_total_fee_satoshis = proposed_feerate as u64 * tx_weight / 1000;
3962 let proposed_max_total_fee_satoshis = if self.is_outbound() {
3963 // We always add force_close_avoidance_max_fee_satoshis to our normal
3964 // feerate-calculated fee, but allow the max to be overridden if we're using a
3965 // target feerate-calculated fee.
3966 cmp::max(normal_feerate as u64 * tx_weight / 1000 + self.config.force_close_avoidance_max_fee_satoshis,
3967 proposed_max_feerate as u64 * tx_weight / 1000)
3969 self.channel_value_satoshis - (self.value_to_self_msat + 999) / 1000
3972 self.closing_fee_limits = Some((proposed_total_fee_satoshis, proposed_max_total_fee_satoshis));
3973 self.closing_fee_limits.clone().unwrap()
3976 /// Returns true if we're ready to commence the closing_signed negotiation phase. This is true
3977 /// after both sides have exchanged a `shutdown` message and all HTLCs have been drained. At
3978 /// this point if we're the funder we should send the initial closing_signed, and in any case
3979 /// shutdown should complete within a reasonable timeframe.
3980 fn closing_negotiation_ready(&self) -> bool {
3981 self.pending_inbound_htlcs.is_empty() && self.pending_outbound_htlcs.is_empty() &&
3982 self.channel_state &
3983 (BOTH_SIDES_SHUTDOWN_MASK | ChannelState::AwaitingRemoteRevoke as u32 |
3984 ChannelState::PeerDisconnected as u32 | ChannelState::MonitorUpdateFailed as u32)
3985 == BOTH_SIDES_SHUTDOWN_MASK &&
3986 self.pending_update_fee.is_none()
3989 /// Checks if the closing_signed negotiation is making appropriate progress, possibly returning
3990 /// an Err if no progress is being made and the channel should be force-closed instead.
3991 /// Should be called on a one-minute timer.
3992 pub fn timer_check_closing_negotiation_progress(&mut self) -> Result<(), ChannelError> {
3993 if self.closing_negotiation_ready() {
3994 if self.closing_signed_in_flight {
3995 return Err(ChannelError::Close("closing_signed negotiation failed to finish within two timer ticks".to_owned()));
3997 self.closing_signed_in_flight = true;
4003 pub fn maybe_propose_closing_signed<F: Deref, L: Deref>(&mut self, fee_estimator: &F, logger: &L)
4004 -> Result<(Option<msgs::ClosingSigned>, Option<Transaction>), ChannelError>
4005 where F::Target: FeeEstimator, L::Target: Logger
4007 if self.last_sent_closing_fee.is_some() || !self.closing_negotiation_ready() {
4008 return Ok((None, None));
4011 if !self.is_outbound() {
4012 if let Some(msg) = &self.pending_counterparty_closing_signed.take() {
4013 return self.closing_signed(fee_estimator, &msg);
4015 return Ok((None, None));
4018 let (our_min_fee, our_max_fee) = self.calculate_closing_fee_limits(fee_estimator);
4020 assert!(self.shutdown_scriptpubkey.is_some());
4021 let (closing_tx, total_fee_satoshis) = self.build_closing_transaction(our_min_fee, false);
4022 log_trace!(logger, "Proposing initial closing_signed for our counterparty with a fee range of {}-{} sat (with initial proposal {} sats)",
4023 our_min_fee, our_max_fee, total_fee_satoshis);
4025 let sig = self.holder_signer
4026 .sign_closing_transaction(&closing_tx, &self.secp_ctx)
4027 .map_err(|()| ChannelError::Close("Failed to get signature for closing transaction.".to_owned()))?;
4029 self.last_sent_closing_fee = Some((total_fee_satoshis, sig.clone()));
4030 Ok((Some(msgs::ClosingSigned {
4031 channel_id: self.channel_id,
4032 fee_satoshis: total_fee_satoshis,
4034 fee_range: Some(msgs::ClosingSignedFeeRange {
4035 min_fee_satoshis: our_min_fee,
4036 max_fee_satoshis: our_max_fee,
4041 pub fn shutdown<K: Deref>(
4042 &mut self, keys_provider: &K, their_features: &InitFeatures, msg: &msgs::Shutdown
4043 ) -> Result<(Option<msgs::Shutdown>, Option<ChannelMonitorUpdate>, Vec<(HTLCSource, PaymentHash)>), ChannelError>
4044 where K::Target: KeysInterface<Signer = Signer>
4046 if self.channel_state & (ChannelState::PeerDisconnected as u32) == ChannelState::PeerDisconnected as u32 {
4047 return Err(ChannelError::Close("Peer sent shutdown when we needed a channel_reestablish".to_owned()));
4049 if self.channel_state < ChannelState::FundingSent as u32 {
4050 // Spec says we should fail the connection, not the channel, but that's nonsense, there
4051 // are plenty of reasons you may want to fail a channel pre-funding, and spec says you
4052 // can do that via error message without getting a connection fail anyway...
4053 return Err(ChannelError::Close("Peer sent shutdown pre-funding generation".to_owned()));
4055 for htlc in self.pending_inbound_htlcs.iter() {
4056 if let InboundHTLCState::RemoteAnnounced(_) = htlc.state {
4057 return Err(ChannelError::Close("Got shutdown with remote pending HTLCs".to_owned()));
4060 assert_eq!(self.channel_state & ChannelState::ShutdownComplete as u32, 0);
4062 if !script::is_bolt2_compliant(&msg.scriptpubkey, their_features) {
4063 return Err(ChannelError::Warn(format!("Got a nonstandard scriptpubkey ({}) from remote peer", msg.scriptpubkey.to_bytes().to_hex())));
4066 if self.counterparty_shutdown_scriptpubkey.is_some() {
4067 if Some(&msg.scriptpubkey) != self.counterparty_shutdown_scriptpubkey.as_ref() {
4068 return Err(ChannelError::Warn(format!("Got shutdown request with a scriptpubkey ({}) which did not match their previous scriptpubkey.", msg.scriptpubkey.to_bytes().to_hex())));
4071 self.counterparty_shutdown_scriptpubkey = Some(msg.scriptpubkey.clone());
4074 // If we have any LocalAnnounced updates we'll probably just get back an update_fail_htlc
4075 // immediately after the commitment dance, but we can send a Shutdown because we won't send
4076 // any further commitment updates after we set LocalShutdownSent.
4077 let send_shutdown = (self.channel_state & ChannelState::LocalShutdownSent as u32) != ChannelState::LocalShutdownSent as u32;
4079 let update_shutdown_script = match self.shutdown_scriptpubkey {
4082 assert!(send_shutdown);
4083 let shutdown_scriptpubkey = keys_provider.get_shutdown_scriptpubkey();
4084 if !shutdown_scriptpubkey.is_compatible(their_features) {
4085 return Err(ChannelError::Close(format!("Provided a scriptpubkey format not accepted by peer: {}", shutdown_scriptpubkey)));
4087 self.shutdown_scriptpubkey = Some(shutdown_scriptpubkey);
4092 // From here on out, we may not fail!
4094 self.channel_state |= ChannelState::RemoteShutdownSent as u32;
4095 self.update_time_counter += 1;
4097 let monitor_update = if update_shutdown_script {
4098 self.latest_monitor_update_id += 1;
4099 Some(ChannelMonitorUpdate {
4100 update_id: self.latest_monitor_update_id,
4101 updates: vec![ChannelMonitorUpdateStep::ShutdownScript {
4102 scriptpubkey: self.get_closing_scriptpubkey(),
4106 let shutdown = if send_shutdown {
4107 Some(msgs::Shutdown {
4108 channel_id: self.channel_id,
4109 scriptpubkey: self.get_closing_scriptpubkey(),
4113 // We can't send our shutdown until we've committed all of our pending HTLCs, but the
4114 // remote side is unlikely to accept any new HTLCs, so we go ahead and "free" any holding
4115 // cell HTLCs and return them to fail the payment.
4116 self.holding_cell_update_fee = None;
4117 let mut dropped_outbound_htlcs = Vec::with_capacity(self.holding_cell_htlc_updates.len());
4118 self.holding_cell_htlc_updates.retain(|htlc_update| {
4120 &HTLCUpdateAwaitingACK::AddHTLC { ref payment_hash, ref source, .. } => {
4121 dropped_outbound_htlcs.push((source.clone(), payment_hash.clone()));
4128 self.channel_state |= ChannelState::LocalShutdownSent as u32;
4129 self.update_time_counter += 1;
4131 Ok((shutdown, monitor_update, dropped_outbound_htlcs))
4134 fn build_signed_closing_transaction(&self, closing_tx: &ClosingTransaction, counterparty_sig: &Signature, sig: &Signature) -> Transaction {
4135 let mut tx = closing_tx.trust().built_transaction().clone();
4137 tx.input[0].witness.push(Vec::new()); // First is the multisig dummy
4139 let funding_key = self.get_holder_pubkeys().funding_pubkey.serialize();
4140 let counterparty_funding_key = self.counterparty_funding_pubkey().serialize();
4141 let mut holder_sig = sig.serialize_der().to_vec();
4142 holder_sig.push(EcdsaSighashType::All as u8);
4143 let mut cp_sig = counterparty_sig.serialize_der().to_vec();
4144 cp_sig.push(EcdsaSighashType::All as u8);
4145 if funding_key[..] < counterparty_funding_key[..] {
4146 tx.input[0].witness.push(holder_sig);
4147 tx.input[0].witness.push(cp_sig);
4149 tx.input[0].witness.push(cp_sig);
4150 tx.input[0].witness.push(holder_sig);
4153 tx.input[0].witness.push(self.get_funding_redeemscript().into_bytes());
4157 pub fn closing_signed<F: Deref>(&mut self, fee_estimator: &F, msg: &msgs::ClosingSigned) -> Result<(Option<msgs::ClosingSigned>, Option<Transaction>), ChannelError>
4158 where F::Target: FeeEstimator
4160 if self.channel_state & BOTH_SIDES_SHUTDOWN_MASK != BOTH_SIDES_SHUTDOWN_MASK {
4161 return Err(ChannelError::Close("Remote end sent us a closing_signed before both sides provided a shutdown".to_owned()));
4163 if self.channel_state & (ChannelState::PeerDisconnected as u32) == ChannelState::PeerDisconnected as u32 {
4164 return Err(ChannelError::Close("Peer sent closing_signed when we needed a channel_reestablish".to_owned()));
4166 if !self.pending_inbound_htlcs.is_empty() || !self.pending_outbound_htlcs.is_empty() {
4167 return Err(ChannelError::Close("Remote end sent us a closing_signed while there were still pending HTLCs".to_owned()));
4169 if msg.fee_satoshis > TOTAL_BITCOIN_SUPPLY_SATOSHIS { // this is required to stop potential overflow in build_closing_transaction
4170 return Err(ChannelError::Close("Remote tried to send us a closing tx with > 21 million BTC fee".to_owned()));
4173 if self.is_outbound() && self.last_sent_closing_fee.is_none() {
4174 return Err(ChannelError::Close("Remote tried to send a closing_signed when we were supposed to propose the first one".to_owned()));
4177 if self.channel_state & ChannelState::MonitorUpdateFailed as u32 != 0 {
4178 self.pending_counterparty_closing_signed = Some(msg.clone());
4179 return Ok((None, None));
4182 let funding_redeemscript = self.get_funding_redeemscript();
4183 let (mut closing_tx, used_total_fee) = self.build_closing_transaction(msg.fee_satoshis, false);
4184 if used_total_fee != msg.fee_satoshis {
4185 return Err(ChannelError::Close(format!("Remote sent us a closing_signed with a fee other than the value they can claim. Fee in message: {}. Actual closing tx fee: {}", msg.fee_satoshis, used_total_fee)));
4187 let sighash = closing_tx.trust().get_sighash_all(&funding_redeemscript, self.channel_value_satoshis);
4189 match self.secp_ctx.verify_ecdsa(&sighash, &msg.signature, &self.get_counterparty_pubkeys().funding_pubkey) {
4192 // The remote end may have decided to revoke their output due to inconsistent dust
4193 // limits, so check for that case by re-checking the signature here.
4194 closing_tx = self.build_closing_transaction(msg.fee_satoshis, true).0;
4195 let sighash = closing_tx.trust().get_sighash_all(&funding_redeemscript, self.channel_value_satoshis);
4196 secp_check!(self.secp_ctx.verify_ecdsa(&sighash, &msg.signature, self.counterparty_funding_pubkey()), "Invalid closing tx signature from peer".to_owned());
4200 for outp in closing_tx.trust().built_transaction().output.iter() {
4201 if !outp.script_pubkey.is_witness_program() && outp.value < MAX_STD_OUTPUT_DUST_LIMIT_SATOSHIS {
4202 return Err(ChannelError::Close("Remote sent us a closing_signed with a dust output. Always use segwit closing scripts!".to_owned()));
4206 assert!(self.shutdown_scriptpubkey.is_some());
4207 if let Some((last_fee, sig)) = self.last_sent_closing_fee {
4208 if last_fee == msg.fee_satoshis {
4209 let tx = self.build_signed_closing_transaction(&mut closing_tx, &msg.signature, &sig);
4210 self.channel_state = ChannelState::ShutdownComplete as u32;
4211 self.update_time_counter += 1;
4212 return Ok((None, Some(tx)));
4216 let (our_min_fee, our_max_fee) = self.calculate_closing_fee_limits(fee_estimator);
4218 macro_rules! propose_fee {
4219 ($new_fee: expr) => {
4220 let (closing_tx, used_fee) = if $new_fee == msg.fee_satoshis {
4221 (closing_tx, $new_fee)
4223 self.build_closing_transaction($new_fee, false)
4226 let sig = self.holder_signer
4227 .sign_closing_transaction(&closing_tx, &self.secp_ctx)
4228 .map_err(|_| ChannelError::Close("External signer refused to sign closing transaction".to_owned()))?;
4230 let signed_tx = if $new_fee == msg.fee_satoshis {
4231 self.channel_state = ChannelState::ShutdownComplete as u32;
4232 self.update_time_counter += 1;
4233 let tx = self.build_signed_closing_transaction(&closing_tx, &msg.signature, &sig);
4237 self.last_sent_closing_fee = Some((used_fee, sig.clone()));
4238 return Ok((Some(msgs::ClosingSigned {
4239 channel_id: self.channel_id,
4240 fee_satoshis: used_fee,
4242 fee_range: Some(msgs::ClosingSignedFeeRange {
4243 min_fee_satoshis: our_min_fee,
4244 max_fee_satoshis: our_max_fee,
4250 if let Some(msgs::ClosingSignedFeeRange { min_fee_satoshis, max_fee_satoshis }) = msg.fee_range {
4251 if msg.fee_satoshis < min_fee_satoshis || msg.fee_satoshis > max_fee_satoshis {
4252 return Err(ChannelError::Close(format!("Peer sent a bogus closing_signed - suggested fee of {} sat was not in their desired range of {} sat - {} sat", msg.fee_satoshis, min_fee_satoshis, max_fee_satoshis)));
4254 if max_fee_satoshis < our_min_fee {
4255 return Err(ChannelError::Warn(format!("Unable to come to consensus about closing feerate, remote's max fee ({} sat) was smaller than our min fee ({} sat)", max_fee_satoshis, our_min_fee)));
4257 if min_fee_satoshis > our_max_fee {
4258 return Err(ChannelError::Warn(format!("Unable to come to consensus about closing feerate, remote's min fee ({} sat) was greater than our max fee ({} sat)", min_fee_satoshis, our_max_fee)));
4261 if !self.is_outbound() {
4262 // They have to pay, so pick the highest fee in the overlapping range.
4263 // We should never set an upper bound aside from their full balance
4264 debug_assert_eq!(our_max_fee, self.channel_value_satoshis - (self.value_to_self_msat + 999) / 1000);
4265 propose_fee!(cmp::min(max_fee_satoshis, our_max_fee));
4267 if msg.fee_satoshis < our_min_fee || msg.fee_satoshis > our_max_fee {
4268 return Err(ChannelError::Close(format!("Peer sent a bogus closing_signed - suggested fee of {} sat was not in our desired range of {} sat - {} sat after we informed them of our range.",
4269 msg.fee_satoshis, our_min_fee, our_max_fee)));
4271 // The proposed fee is in our acceptable range, accept it and broadcast!
4272 propose_fee!(msg.fee_satoshis);
4275 // Old fee style negotiation. We don't bother to enforce whether they are complying
4276 // with the "making progress" requirements, we just comply and hope for the best.
4277 if let Some((last_fee, _)) = self.last_sent_closing_fee {
4278 if msg.fee_satoshis > last_fee {
4279 if msg.fee_satoshis < our_max_fee {
4280 propose_fee!(msg.fee_satoshis);
4281 } else if last_fee < our_max_fee {
4282 propose_fee!(our_max_fee);
4284 return Err(ChannelError::Close(format!("Unable to come to consensus about closing feerate, remote wants something ({} sat) higher than our max fee ({} sat)", msg.fee_satoshis, our_max_fee)));
4287 if msg.fee_satoshis > our_min_fee {
4288 propose_fee!(msg.fee_satoshis);
4289 } else if last_fee > our_min_fee {
4290 propose_fee!(our_min_fee);
4292 return Err(ChannelError::Close(format!("Unable to come to consensus about closing feerate, remote wants something ({} sat) lower than our min fee ({} sat)", msg.fee_satoshis, our_min_fee)));
4296 if msg.fee_satoshis < our_min_fee {
4297 propose_fee!(our_min_fee);
4298 } else if msg.fee_satoshis > our_max_fee {
4299 propose_fee!(our_max_fee);
4301 propose_fee!(msg.fee_satoshis);
4307 // Public utilities:
4309 pub fn channel_id(&self) -> [u8; 32] {
4313 pub fn minimum_depth(&self) -> Option<u32> {
4317 /// Gets the "user_id" value passed into the construction of this channel. It has no special
4318 /// meaning and exists only to allow users to have a persistent identifier of a channel.
4319 pub fn get_user_id(&self) -> u64 {
4323 /// Gets the channel's type
4324 pub fn get_channel_type(&self) -> &ChannelTypeFeatures {
4328 /// Guaranteed to be Some after both FundingLocked messages have been exchanged (and, thus,
4329 /// is_usable() returns true).
4330 /// Allowed in any state (including after shutdown)
4331 pub fn get_short_channel_id(&self) -> Option<u64> {
4332 self.short_channel_id
4335 /// Allowed in any state (including after shutdown)
4336 pub fn latest_inbound_scid_alias(&self) -> Option<u64> {
4337 self.latest_inbound_scid_alias
4340 /// Allowed in any state (including after shutdown)
4341 pub fn outbound_scid_alias(&self) -> u64 {
4342 self.outbound_scid_alias
4344 /// Only allowed immediately after deserialization if get_outbound_scid_alias returns 0,
4345 /// indicating we were written by LDK prior to 0.0.106 which did not set outbound SCID aliases.
4346 pub fn set_outbound_scid_alias(&mut self, outbound_scid_alias: u64) {
4347 assert_eq!(self.outbound_scid_alias, 0);
4348 self.outbound_scid_alias = outbound_scid_alias;
4351 /// Returns the funding_txo we either got from our peer, or were given by
4352 /// get_outbound_funding_created.
4353 pub fn get_funding_txo(&self) -> Option<OutPoint> {
4354 self.channel_transaction_parameters.funding_outpoint
4357 fn get_holder_selected_contest_delay(&self) -> u16 {
4358 self.channel_transaction_parameters.holder_selected_contest_delay
4361 fn get_holder_pubkeys(&self) -> &ChannelPublicKeys {
4362 &self.channel_transaction_parameters.holder_pubkeys
4365 pub fn get_counterparty_selected_contest_delay(&self) -> Option<u16> {
4366 self.channel_transaction_parameters.counterparty_parameters
4367 .as_ref().map(|params| params.selected_contest_delay)
4370 fn get_counterparty_pubkeys(&self) -> &ChannelPublicKeys {
4371 &self.channel_transaction_parameters.counterparty_parameters.as_ref().unwrap().pubkeys
4374 /// Allowed in any state (including after shutdown)
4375 pub fn get_counterparty_node_id(&self) -> PublicKey {
4376 self.counterparty_node_id
4379 /// Allowed in any state (including after shutdown)
4380 pub fn get_holder_htlc_minimum_msat(&self) -> u64 {
4381 self.holder_htlc_minimum_msat
4384 /// Allowed in any state (including after shutdown), but will return none before TheirInitSent
4385 pub fn get_holder_htlc_maximum_msat(&self) -> Option<u64> {
4386 self.get_htlc_maximum_msat(self.holder_max_htlc_value_in_flight_msat)
4389 /// Allowed in any state (including after shutdown)
4390 pub fn get_announced_htlc_max_msat(&self) -> u64 {
4392 // Upper bound by capacity. We make it a bit less than full capacity to prevent attempts
4393 // to use full capacity. This is an effort to reduce routing failures, because in many cases
4394 // channel might have been used to route very small values (either by honest users or as DoS).
4395 self.channel_value_satoshis * 1000 * 9 / 10,
4397 self.counterparty_max_htlc_value_in_flight_msat
4401 /// Allowed in any state (including after shutdown)
4402 pub fn get_counterparty_htlc_minimum_msat(&self) -> u64 {
4403 self.counterparty_htlc_minimum_msat
4406 /// Allowed in any state (including after shutdown), but will return none before TheirInitSent
4407 pub fn get_counterparty_htlc_maximum_msat(&self) -> Option<u64> {
4408 self.get_htlc_maximum_msat(self.counterparty_max_htlc_value_in_flight_msat)
4411 fn get_htlc_maximum_msat(&self, party_max_htlc_value_in_flight_msat: u64) -> Option<u64> {
4412 self.counterparty_selected_channel_reserve_satoshis.map(|counterparty_reserve| {
4413 let holder_reserve = self.holder_selected_channel_reserve_satoshis;
4415 (self.channel_value_satoshis - counterparty_reserve - holder_reserve) * 1000,
4416 party_max_htlc_value_in_flight_msat
4421 pub fn get_value_satoshis(&self) -> u64 {
4422 self.channel_value_satoshis
4425 pub fn get_fee_proportional_millionths(&self) -> u32 {
4426 self.config.forwarding_fee_proportional_millionths
4429 pub fn get_cltv_expiry_delta(&self) -> u16 {
4430 cmp::max(self.config.cltv_expiry_delta, MIN_CLTV_EXPIRY_DELTA)
4433 pub fn get_max_dust_htlc_exposure_msat(&self) -> u64 {
4434 self.config.max_dust_htlc_exposure_msat
4437 pub fn get_feerate(&self) -> u32 {
4441 pub fn get_dust_buffer_feerate(&self, outbound_feerate_update: Option<u32>) -> u32 {
4442 // When calculating our exposure to dust HTLCs, we assume that the channel feerate
4443 // may, at any point, increase by at least 10 sat/vB (i.e 2530 sat/kWU) or 25%,
4444 // whichever is higher. This ensures that we aren't suddenly exposed to significantly
4445 // more dust balance if the feerate increases when we have several HTLCs pending
4446 // which are near the dust limit.
4447 let mut feerate_per_kw = self.feerate_per_kw;
4448 // If there's a pending update fee, use it to ensure we aren't under-estimating
4449 // potential feerate updates coming soon.
4450 if let Some((feerate, _)) = self.pending_update_fee {
4451 feerate_per_kw = cmp::max(feerate_per_kw, feerate);
4453 if let Some(feerate) = outbound_feerate_update {
4454 feerate_per_kw = cmp::max(feerate_per_kw, feerate);
4456 cmp::max(2530, feerate_per_kw * 1250 / 1000)
4459 pub fn get_cur_holder_commitment_transaction_number(&self) -> u64 {
4460 self.cur_holder_commitment_transaction_number + 1
4463 pub fn get_cur_counterparty_commitment_transaction_number(&self) -> u64 {
4464 self.cur_counterparty_commitment_transaction_number + 1 - if self.channel_state & (ChannelState::AwaitingRemoteRevoke as u32) != 0 { 1 } else { 0 }
4467 pub fn get_revoked_counterparty_commitment_transaction_number(&self) -> u64 {
4468 self.cur_counterparty_commitment_transaction_number + 2
4472 pub fn get_signer(&self) -> &Signer {
4477 pub fn get_value_stat(&self) -> ChannelValueStat {
4479 value_to_self_msat: self.value_to_self_msat,
4480 channel_value_msat: self.channel_value_satoshis * 1000,
4481 channel_reserve_msat: self.counterparty_selected_channel_reserve_satoshis.unwrap() * 1000,
4482 pending_outbound_htlcs_amount_msat: self.pending_outbound_htlcs.iter().map(|ref h| h.amount_msat).sum::<u64>(),
4483 pending_inbound_htlcs_amount_msat: self.pending_inbound_htlcs.iter().map(|ref h| h.amount_msat).sum::<u64>(),
4484 holding_cell_outbound_amount_msat: {
4486 for h in self.holding_cell_htlc_updates.iter() {
4488 &HTLCUpdateAwaitingACK::AddHTLC{amount_msat, .. } => {
4496 counterparty_max_htlc_value_in_flight_msat: self.counterparty_max_htlc_value_in_flight_msat,
4497 counterparty_dust_limit_msat: self.counterparty_dust_limit_satoshis * 1000,
4501 /// Allowed in any state (including after shutdown)
4502 pub fn get_update_time_counter(&self) -> u32 {
4503 self.update_time_counter
4506 pub fn get_latest_monitor_update_id(&self) -> u64 {
4507 self.latest_monitor_update_id
4510 pub fn should_announce(&self) -> bool {
4511 self.config.announced_channel
4514 pub fn is_outbound(&self) -> bool {
4515 self.channel_transaction_parameters.is_outbound_from_holder
4518 /// Gets the fee we'd want to charge for adding an HTLC output to this Channel
4519 /// Allowed in any state (including after shutdown)
4520 pub fn get_outbound_forwarding_fee_base_msat(&self) -> u32 {
4521 self.config.forwarding_fee_base_msat
4524 /// Returns true if we've ever received a message from the remote end for this Channel
4525 pub fn have_received_message(&self) -> bool {
4526 self.channel_state > (ChannelState::OurInitSent as u32)
4529 /// Returns true if this channel is fully established and not known to be closing.
4530 /// Allowed in any state (including after shutdown)
4531 pub fn is_usable(&self) -> bool {
4532 let mask = ChannelState::ChannelFunded as u32 | BOTH_SIDES_SHUTDOWN_MASK;
4533 (self.channel_state & mask) == (ChannelState::ChannelFunded as u32) && !self.monitor_pending_funding_locked
4536 /// Returns true if this channel is currently available for use. This is a superset of
4537 /// is_usable() and considers things like the channel being temporarily disabled.
4538 /// Allowed in any state (including after shutdown)
4539 pub fn is_live(&self) -> bool {
4540 self.is_usable() && (self.channel_state & (ChannelState::PeerDisconnected as u32) == 0)
4543 /// Returns true if this channel has been marked as awaiting a monitor update to move forward.
4544 /// Allowed in any state (including after shutdown)
4545 pub fn is_awaiting_monitor_update(&self) -> bool {
4546 (self.channel_state & ChannelState::MonitorUpdateFailed as u32) != 0
4549 /// Returns true if funding_created was sent/received.
4550 pub fn is_funding_initiated(&self) -> bool {
4551 self.channel_state >= ChannelState::FundingSent as u32
4554 /// Returns true if our peer has either initiated or agreed to shut down the channel.
4555 pub fn received_shutdown(&self) -> bool {
4556 (self.channel_state & ChannelState::RemoteShutdownSent as u32) != 0
4559 /// Returns true if we either initiated or agreed to shut down the channel.
4560 pub fn sent_shutdown(&self) -> bool {
4561 (self.channel_state & ChannelState::LocalShutdownSent as u32) != 0
4564 /// Returns true if this channel is fully shut down. True here implies that no further actions
4565 /// may/will be taken on this channel, and thus this object should be freed. Any future changes
4566 /// will be handled appropriately by the chain monitor.
4567 pub fn is_shutdown(&self) -> bool {
4568 if (self.channel_state & ChannelState::ShutdownComplete as u32) == ChannelState::ShutdownComplete as u32 {
4569 assert!(self.channel_state == ChannelState::ShutdownComplete as u32);
4574 pub fn channel_update_status(&self) -> ChannelUpdateStatus {
4575 self.channel_update_status
4578 pub fn set_channel_update_status(&mut self, status: ChannelUpdateStatus) {
4579 self.update_time_counter += 1;
4580 self.channel_update_status = status;
4583 fn check_get_funding_locked(&mut self, height: u32) -> Option<msgs::FundingLocked> {
4584 if self.funding_tx_confirmation_height == 0 {
4588 let funding_tx_confirmations = height as i64 - self.funding_tx_confirmation_height as i64 + 1;
4589 if funding_tx_confirmations <= 0 {
4590 self.funding_tx_confirmation_height = 0;
4593 if funding_tx_confirmations < self.minimum_depth.unwrap_or(0) as i64 {
4597 let non_shutdown_state = self.channel_state & (!MULTI_STATE_FLAGS);
4598 let need_commitment_update = if non_shutdown_state == ChannelState::FundingSent as u32 {
4599 self.channel_state |= ChannelState::OurFundingLocked as u32;
4601 } else if non_shutdown_state == (ChannelState::FundingSent as u32 | ChannelState::TheirFundingLocked as u32) {
4602 self.channel_state = ChannelState::ChannelFunded as u32 | (self.channel_state & MULTI_STATE_FLAGS);
4603 self.update_time_counter += 1;
4605 } else if non_shutdown_state == (ChannelState::FundingSent as u32 | ChannelState::OurFundingLocked as u32) {
4606 // We got a reorg but not enough to trigger a force close, just ignore.
4608 } else if self.channel_state < ChannelState::ChannelFunded as u32 {
4609 panic!("Started confirming a channel in a state pre-FundingSent?: {}", self.channel_state);
4611 // We got a reorg but not enough to trigger a force close, just ignore.
4615 if need_commitment_update {
4616 if self.channel_state & (ChannelState::MonitorUpdateFailed as u32) == 0 {
4617 if self.channel_state & (ChannelState::PeerDisconnected as u32) == 0 {
4618 let next_per_commitment_point =
4619 self.holder_signer.get_per_commitment_point(INITIAL_COMMITMENT_NUMBER - 1, &self.secp_ctx);
4620 return Some(msgs::FundingLocked {
4621 channel_id: self.channel_id,
4622 next_per_commitment_point,
4623 short_channel_id_alias: Some(self.outbound_scid_alias),
4627 self.monitor_pending_funding_locked = true;
4633 /// When a transaction is confirmed, we check whether it is or spends the funding transaction
4634 /// In the first case, we store the confirmation height and calculating the short channel id.
4635 /// In the second, we simply return an Err indicating we need to be force-closed now.
4636 pub fn transactions_confirmed<L: Deref>(&mut self, block_hash: &BlockHash, height: u32,
4637 txdata: &TransactionData, genesis_block_hash: BlockHash, node_pk: PublicKey, logger: &L)
4638 -> Result<(Option<msgs::FundingLocked>, Option<msgs::AnnouncementSignatures>), ClosureReason> where L::Target: Logger {
4639 let non_shutdown_state = self.channel_state & (!MULTI_STATE_FLAGS);
4640 if let Some(funding_txo) = self.get_funding_txo() {
4641 for &(index_in_block, tx) in txdata.iter() {
4642 // If we haven't yet sent a funding_locked, but are in FundingSent (ignoring
4643 // whether they've sent a funding_locked or not), check if we should send one.
4644 if non_shutdown_state & !(ChannelState::TheirFundingLocked as u32) == ChannelState::FundingSent as u32 {
4645 if tx.txid() == funding_txo.txid {
4646 let txo_idx = funding_txo.index as usize;
4647 if txo_idx >= tx.output.len() || tx.output[txo_idx].script_pubkey != self.get_funding_redeemscript().to_v0_p2wsh() ||
4648 tx.output[txo_idx].value != self.channel_value_satoshis {
4649 if self.is_outbound() {
4650 // If we generated the funding transaction and it doesn't match what it
4651 // should, the client is really broken and we should just panic and
4652 // tell them off. That said, because hash collisions happen with high
4653 // probability in fuzzing mode, if we're fuzzing we just close the
4654 // channel and move on.
4655 #[cfg(not(fuzzing))]
4656 panic!("Client called ChannelManager::funding_transaction_generated with bogus transaction!");
4658 self.update_time_counter += 1;
4659 let err_reason = "funding tx had wrong script/value or output index";
4660 return Err(ClosureReason::ProcessingError { err: err_reason.to_owned() });
4662 if self.is_outbound() {
4663 for input in tx.input.iter() {
4664 if input.witness.is_empty() {
4665 // We generated a malleable funding transaction, implying we've
4666 // just exposed ourselves to funds loss to our counterparty.
4667 #[cfg(not(fuzzing))]
4668 panic!("Client called ChannelManager::funding_transaction_generated with bogus transaction!");
4672 self.funding_tx_confirmation_height = height;
4673 self.funding_tx_confirmed_in = Some(*block_hash);
4674 self.short_channel_id = match scid_from_parts(height as u64, index_in_block as u64, txo_idx as u64) {
4675 Ok(scid) => Some(scid),
4676 Err(_) => panic!("Block was bogus - either height was > 16 million, had > 16 million transactions, or had > 65k outputs"),
4680 // If we allow 1-conf funding, we may need to check for funding_locked here and
4681 // send it immediately instead of waiting for a best_block_updated call (which
4682 // may have already happened for this block).
4683 if let Some(funding_locked) = self.check_get_funding_locked(height) {
4684 log_info!(logger, "Sending a funding_locked to our peer for channel {}", log_bytes!(self.channel_id));
4685 let announcement_sigs = self.get_announcement_sigs(node_pk, genesis_block_hash, height, logger);
4686 return Ok((Some(funding_locked), announcement_sigs));
4689 for inp in tx.input.iter() {
4690 if inp.previous_output == funding_txo.into_bitcoin_outpoint() {
4691 log_info!(logger, "Detected channel-closing tx {} spending {}:{}, closing channel {}", tx.txid(), inp.previous_output.txid, inp.previous_output.vout, log_bytes!(self.channel_id()));
4692 return Err(ClosureReason::CommitmentTxConfirmed);
4700 /// When a new block is connected, we check the height of the block against outbound holding
4701 /// cell HTLCs in case we need to give up on them prematurely and time them out. Everything
4702 /// else (e.g. commitment transaction broadcasts, HTLC transaction broadcasting, etc) is
4703 /// handled by the ChannelMonitor.
4705 /// If we return Err, the channel may have been closed, at which point the standard
4706 /// requirements apply - no calls may be made except those explicitly stated to be allowed
4709 /// May return some HTLCs (and their payment_hash) which have timed out and should be failed
4711 pub fn best_block_updated<L: Deref>(&mut self, height: u32, highest_header_time: u32, genesis_block_hash: BlockHash, node_pk: PublicKey, logger: &L)
4712 -> Result<(Option<msgs::FundingLocked>, Vec<(HTLCSource, PaymentHash)>, Option<msgs::AnnouncementSignatures>), ClosureReason> where L::Target: Logger {
4713 self.do_best_block_updated(height, highest_header_time, Some((genesis_block_hash, node_pk)), logger)
4716 fn do_best_block_updated<L: Deref>(&mut self, height: u32, highest_header_time: u32, genesis_node_pk: Option<(BlockHash, PublicKey)>, logger: &L)
4717 -> Result<(Option<msgs::FundingLocked>, Vec<(HTLCSource, PaymentHash)>, Option<msgs::AnnouncementSignatures>), ClosureReason> where L::Target: Logger {
4718 let mut timed_out_htlcs = Vec::new();
4719 // This mirrors the check in ChannelManager::decode_update_add_htlc_onion, refusing to
4720 // forward an HTLC when our counterparty should almost certainly just fail it for expiring
4722 let unforwarded_htlc_cltv_limit = height + LATENCY_GRACE_PERIOD_BLOCKS;
4723 self.holding_cell_htlc_updates.retain(|htlc_update| {
4725 &HTLCUpdateAwaitingACK::AddHTLC { ref payment_hash, ref source, ref cltv_expiry, .. } => {
4726 if *cltv_expiry <= unforwarded_htlc_cltv_limit {
4727 timed_out_htlcs.push((source.clone(), payment_hash.clone()));
4735 self.update_time_counter = cmp::max(self.update_time_counter, highest_header_time);
4737 if let Some(funding_locked) = self.check_get_funding_locked(height) {
4738 let announcement_sigs = if let Some((genesis_block_hash, node_pk)) = genesis_node_pk {
4739 self.get_announcement_sigs(node_pk, genesis_block_hash, height, logger)
4741 log_info!(logger, "Sending a funding_locked to our peer for channel {}", log_bytes!(self.channel_id));
4742 return Ok((Some(funding_locked), timed_out_htlcs, announcement_sigs));
4745 let non_shutdown_state = self.channel_state & (!MULTI_STATE_FLAGS);
4746 if non_shutdown_state >= ChannelState::ChannelFunded as u32 ||
4747 (non_shutdown_state & ChannelState::OurFundingLocked as u32) == ChannelState::OurFundingLocked as u32 {
4748 let mut funding_tx_confirmations = height as i64 - self.funding_tx_confirmation_height as i64 + 1;
4749 if self.funding_tx_confirmation_height == 0 {
4750 // Note that check_get_funding_locked may reset funding_tx_confirmation_height to
4751 // zero if it has been reorged out, however in either case, our state flags
4752 // indicate we've already sent a funding_locked
4753 funding_tx_confirmations = 0;
4756 // If we've sent funding_locked (or have both sent and received funding_locked), and
4757 // the funding transaction has become unconfirmed,
4758 // close the channel and hope we can get the latest state on chain (because presumably
4759 // the funding transaction is at least still in the mempool of most nodes).
4761 // Note that ideally we wouldn't force-close if we see *any* reorg on a 1-conf channel,
4762 // but not doing so may lead to the `ChannelManager::short_to_id` map being
4763 // inconsistent, so we currently have to.
4764 if funding_tx_confirmations == 0 && self.funding_tx_confirmed_in.is_some() {
4765 let err_reason = format!("Funding transaction was un-confirmed. Locked at {} confs, now have {} confs.",
4766 self.minimum_depth.unwrap(), funding_tx_confirmations);
4767 return Err(ClosureReason::ProcessingError { err: err_reason });
4769 } else if !self.is_outbound() && self.funding_tx_confirmed_in.is_none() &&
4770 height >= self.channel_creation_height + FUNDING_CONF_DEADLINE_BLOCKS {
4771 log_info!(logger, "Closing channel {} due to funding timeout", log_bytes!(self.channel_id));
4772 // If funding_tx_confirmed_in is unset, the channel must not be active
4773 assert!(non_shutdown_state <= ChannelState::ChannelFunded as u32);
4774 assert_eq!(non_shutdown_state & ChannelState::OurFundingLocked as u32, 0);
4775 return Err(ClosureReason::FundingTimedOut);
4778 let announcement_sigs = if let Some((genesis_block_hash, node_pk)) = genesis_node_pk {
4779 self.get_announcement_sigs(node_pk, genesis_block_hash, height, logger)
4781 Ok((None, timed_out_htlcs, announcement_sigs))
4784 /// Indicates the funding transaction is no longer confirmed in the main chain. This may
4785 /// force-close the channel, but may also indicate a harmless reorganization of a block or two
4786 /// before the channel has reached funding_locked and we can just wait for more blocks.
4787 pub fn funding_transaction_unconfirmed<L: Deref>(&mut self, logger: &L) -> Result<(), ClosureReason> where L::Target: Logger {
4788 if self.funding_tx_confirmation_height != 0 {
4789 // We handle the funding disconnection by calling best_block_updated with a height one
4790 // below where our funding was connected, implying a reorg back to conf_height - 1.
4791 let reorg_height = self.funding_tx_confirmation_height - 1;
4792 // We use the time field to bump the current time we set on channel updates if its
4793 // larger. If we don't know that time has moved forward, we can just set it to the last
4794 // time we saw and it will be ignored.
4795 let best_time = self.update_time_counter;
4796 match self.do_best_block_updated(reorg_height, best_time, None, logger) {
4797 Ok((funding_locked, timed_out_htlcs, announcement_sigs)) => {
4798 assert!(funding_locked.is_none(), "We can't generate a funding with 0 confirmations?");
4799 assert!(timed_out_htlcs.is_empty(), "We can't have accepted HTLCs with a timeout before our funding confirmation?");
4800 assert!(announcement_sigs.is_none(), "We can't generate an announcement_sigs with 0 confirmations?");
4806 // We never learned about the funding confirmation anyway, just ignore
4811 // Methods to get unprompted messages to send to the remote end (or where we already returned
4812 // something in the handler for the message that prompted this message):
4814 pub fn get_open_channel(&self, chain_hash: BlockHash) -> msgs::OpenChannel {
4815 if !self.is_outbound() {
4816 panic!("Tried to open a channel for an inbound channel?");
4818 if self.channel_state != ChannelState::OurInitSent as u32 {
4819 panic!("Cannot generate an open_channel after we've moved forward");
4822 if self.cur_holder_commitment_transaction_number != INITIAL_COMMITMENT_NUMBER {
4823 panic!("Tried to send an open_channel for a channel that has already advanced");
4826 let first_per_commitment_point = self.holder_signer.get_per_commitment_point(self.cur_holder_commitment_transaction_number, &self.secp_ctx);
4827 let keys = self.get_holder_pubkeys();
4831 temporary_channel_id: self.channel_id,
4832 funding_satoshis: self.channel_value_satoshis,
4833 push_msat: self.channel_value_satoshis * 1000 - self.value_to_self_msat,
4834 dust_limit_satoshis: self.holder_dust_limit_satoshis,
4835 max_htlc_value_in_flight_msat: self.holder_max_htlc_value_in_flight_msat,
4836 channel_reserve_satoshis: self.holder_selected_channel_reserve_satoshis,
4837 htlc_minimum_msat: self.holder_htlc_minimum_msat,
4838 feerate_per_kw: self.feerate_per_kw as u32,
4839 to_self_delay: self.get_holder_selected_contest_delay(),
4840 max_accepted_htlcs: OUR_MAX_HTLCS,
4841 funding_pubkey: keys.funding_pubkey,
4842 revocation_basepoint: keys.revocation_basepoint,
4843 payment_point: keys.payment_point,
4844 delayed_payment_basepoint: keys.delayed_payment_basepoint,
4845 htlc_basepoint: keys.htlc_basepoint,
4846 first_per_commitment_point,
4847 channel_flags: if self.config.announced_channel {1} else {0},
4848 shutdown_scriptpubkey: OptionalField::Present(match &self.shutdown_scriptpubkey {
4849 Some(script) => script.clone().into_inner(),
4850 None => Builder::new().into_script(),
4852 channel_type: Some(self.channel_type.clone()),
4856 pub fn inbound_is_awaiting_accept(&self) -> bool {
4857 self.inbound_awaiting_accept
4860 /// Marks an inbound channel as accepted and generates a [`msgs::AcceptChannel`] message which
4861 /// should be sent back to the counterparty node.
4863 /// [`msgs::AcceptChannel`]: crate::ln::msgs::AcceptChannel
4864 pub fn accept_inbound_channel(&mut self, user_id: u64) -> msgs::AcceptChannel {
4865 if self.is_outbound() {
4866 panic!("Tried to send accept_channel for an outbound channel?");
4868 if self.channel_state != (ChannelState::OurInitSent as u32) | (ChannelState::TheirInitSent as u32) {
4869 panic!("Tried to send accept_channel after channel had moved forward");
4871 if self.cur_holder_commitment_transaction_number != INITIAL_COMMITMENT_NUMBER {
4872 panic!("Tried to send an accept_channel for a channel that has already advanced");
4874 if !self.inbound_awaiting_accept {
4875 panic!("The inbound channel has already been accepted");
4878 self.user_id = user_id;
4879 self.inbound_awaiting_accept = false;
4881 self.generate_accept_channel_message()
4884 /// This function is used to explicitly generate a [`msgs::AcceptChannel`] message for an
4885 /// inbound channel. If the intention is to accept an inbound channel, use
4886 /// [`Channel::accept_inbound_channel`] instead.
4888 /// [`msgs::AcceptChannel`]: crate::ln::msgs::AcceptChannel
4889 fn generate_accept_channel_message(&self) -> msgs::AcceptChannel {
4890 let first_per_commitment_point = self.holder_signer.get_per_commitment_point(self.cur_holder_commitment_transaction_number, &self.secp_ctx);
4891 let keys = self.get_holder_pubkeys();
4893 msgs::AcceptChannel {
4894 temporary_channel_id: self.channel_id,
4895 dust_limit_satoshis: self.holder_dust_limit_satoshis,
4896 max_htlc_value_in_flight_msat: self.holder_max_htlc_value_in_flight_msat,
4897 channel_reserve_satoshis: self.holder_selected_channel_reserve_satoshis,
4898 htlc_minimum_msat: self.holder_htlc_minimum_msat,
4899 minimum_depth: self.minimum_depth.unwrap(),
4900 to_self_delay: self.get_holder_selected_contest_delay(),
4901 max_accepted_htlcs: OUR_MAX_HTLCS,
4902 funding_pubkey: keys.funding_pubkey,
4903 revocation_basepoint: keys.revocation_basepoint,
4904 payment_point: keys.payment_point,
4905 delayed_payment_basepoint: keys.delayed_payment_basepoint,
4906 htlc_basepoint: keys.htlc_basepoint,
4907 first_per_commitment_point,
4908 shutdown_scriptpubkey: OptionalField::Present(match &self.shutdown_scriptpubkey {
4909 Some(script) => script.clone().into_inner(),
4910 None => Builder::new().into_script(),
4912 channel_type: Some(self.channel_type.clone()),
4916 /// Enables the possibility for tests to extract a [`msgs::AcceptChannel`] message for an
4917 /// inbound channel without accepting it.
4919 /// [`msgs::AcceptChannel`]: crate::ln::msgs::AcceptChannel
4921 pub fn get_accept_channel_message(&self) -> msgs::AcceptChannel {
4922 self.generate_accept_channel_message()
4925 /// If an Err is returned, it is a ChannelError::Close (for get_outbound_funding_created)
4926 fn get_outbound_funding_created_signature<L: Deref>(&mut self, logger: &L) -> Result<Signature, ChannelError> where L::Target: Logger {
4927 let counterparty_keys = self.build_remote_transaction_keys()?;
4928 let counterparty_initial_commitment_tx = self.build_commitment_transaction(self.cur_counterparty_commitment_transaction_number, &counterparty_keys, false, false, logger).tx;
4929 Ok(self.holder_signer.sign_counterparty_commitment(&counterparty_initial_commitment_tx, Vec::new(), &self.secp_ctx)
4930 .map_err(|_| ChannelError::Close("Failed to get signatures for new commitment_signed".to_owned()))?.0)
4933 /// Updates channel state with knowledge of the funding transaction's txid/index, and generates
4934 /// a funding_created message for the remote peer.
4935 /// Panics if called at some time other than immediately after initial handshake, if called twice,
4936 /// or if called on an inbound channel.
4937 /// Note that channel_id changes during this call!
4938 /// Do NOT broadcast the funding transaction until after a successful funding_signed call!
4939 /// If an Err is returned, it is a ChannelError::Close.
4940 pub fn get_outbound_funding_created<L: Deref>(&mut self, funding_transaction: Transaction, funding_txo: OutPoint, logger: &L) -> Result<msgs::FundingCreated, ChannelError> where L::Target: Logger {
4941 if !self.is_outbound() {
4942 panic!("Tried to create outbound funding_created message on an inbound channel!");
4944 if self.channel_state != (ChannelState::OurInitSent as u32 | ChannelState::TheirInitSent as u32) {
4945 panic!("Tried to get a funding_created messsage at a time other than immediately after initial handshake completion (or tried to get funding_created twice)");
4947 if self.commitment_secrets.get_min_seen_secret() != (1 << 48) ||
4948 self.cur_counterparty_commitment_transaction_number != INITIAL_COMMITMENT_NUMBER ||
4949 self.cur_holder_commitment_transaction_number != INITIAL_COMMITMENT_NUMBER {
4950 panic!("Should not have advanced channel commitment tx numbers prior to funding_created");
4953 self.channel_transaction_parameters.funding_outpoint = Some(funding_txo);
4954 self.holder_signer.ready_channel(&self.channel_transaction_parameters);
4956 let signature = match self.get_outbound_funding_created_signature(logger) {
4959 log_error!(logger, "Got bad signatures: {:?}!", e);
4960 self.channel_transaction_parameters.funding_outpoint = None;
4965 let temporary_channel_id = self.channel_id;
4967 // Now that we're past error-generating stuff, update our local state:
4969 self.channel_state = ChannelState::FundingCreated as u32;
4970 self.channel_id = funding_txo.to_channel_id();
4971 self.funding_transaction = Some(funding_transaction);
4973 Ok(msgs::FundingCreated {
4974 temporary_channel_id,
4975 funding_txid: funding_txo.txid,
4976 funding_output_index: funding_txo.index,
4981 /// Gets an UnsignedChannelAnnouncement for this channel. The channel must be publicly
4982 /// announceable and available for use (have exchanged FundingLocked messages in both
4983 /// directions). Should be used for both broadcasted announcements and in response to an
4984 /// AnnouncementSignatures message from the remote peer.
4986 /// Will only fail if we're not in a state where channel_announcement may be sent (including
4989 /// This will only return ChannelError::Ignore upon failure.
4990 fn get_channel_announcement(&self, node_id: PublicKey, chain_hash: BlockHash) -> Result<msgs::UnsignedChannelAnnouncement, ChannelError> {
4991 if !self.config.announced_channel {
4992 return Err(ChannelError::Ignore("Channel is not available for public announcements".to_owned()));
4994 if !self.is_usable() {
4995 return Err(ChannelError::Ignore("Cannot get a ChannelAnnouncement if the channel is not currently usable".to_owned()));
4998 let were_node_one = node_id.serialize()[..] < self.counterparty_node_id.serialize()[..];
5000 let msg = msgs::UnsignedChannelAnnouncement {
5001 features: ChannelFeatures::known(),
5003 short_channel_id: self.get_short_channel_id().unwrap(),
5004 node_id_1: if were_node_one { node_id } else { self.get_counterparty_node_id() },
5005 node_id_2: if were_node_one { self.get_counterparty_node_id() } else { node_id },
5006 bitcoin_key_1: if were_node_one { self.get_holder_pubkeys().funding_pubkey } else { self.counterparty_funding_pubkey().clone() },
5007 bitcoin_key_2: if were_node_one { self.counterparty_funding_pubkey().clone() } else { self.get_holder_pubkeys().funding_pubkey },
5008 excess_data: Vec::new(),
5014 fn get_announcement_sigs<L: Deref>(&mut self, node_pk: PublicKey, genesis_block_hash: BlockHash, best_block_height: u32, logger: &L)
5015 -> Option<msgs::AnnouncementSignatures> where L::Target: Logger {
5016 if self.funding_tx_confirmation_height == 0 || self.funding_tx_confirmation_height + 5 > best_block_height {
5020 if !self.is_usable() {
5024 if self.channel_state & ChannelState::PeerDisconnected as u32 != 0 {
5025 log_trace!(logger, "Cannot create an announcement_signatures as our peer is disconnected");
5029 if self.announcement_sigs_state != AnnouncementSigsState::NotSent {
5033 log_trace!(logger, "Creating an announcement_signatures message for channel {}", log_bytes!(self.channel_id()));
5034 let announcement = match self.get_channel_announcement(node_pk, genesis_block_hash) {
5037 log_trace!(logger, "Cannot create an announcement_signatures as channel is not public.");
5041 let (our_node_sig, our_bitcoin_sig) = match self.holder_signer.sign_channel_announcement(&announcement, &self.secp_ctx) {
5043 log_error!(logger, "Signer rejected channel_announcement signing. Channel will not be announced!");
5048 self.announcement_sigs_state = AnnouncementSigsState::MessageSent;
5050 Some(msgs::AnnouncementSignatures {
5051 channel_id: self.channel_id(),
5052 short_channel_id: self.get_short_channel_id().unwrap(),
5053 node_signature: our_node_sig,
5054 bitcoin_signature: our_bitcoin_sig,
5058 /// Signs the given channel announcement, returning a ChannelError::Ignore if no keys are
5060 fn sign_channel_announcement(&self, our_node_id: PublicKey, announcement: msgs::UnsignedChannelAnnouncement) -> Result<msgs::ChannelAnnouncement, ChannelError> {
5061 if let Some((their_node_sig, their_bitcoin_sig)) = self.announcement_sigs {
5062 let were_node_one = announcement.node_id_1 == our_node_id;
5064 let (our_node_sig, our_bitcoin_sig) = self.holder_signer.sign_channel_announcement(&announcement, &self.secp_ctx)
5065 .map_err(|_| ChannelError::Ignore("Signer rejected channel_announcement".to_owned()))?;
5066 Ok(msgs::ChannelAnnouncement {
5067 node_signature_1: if were_node_one { our_node_sig } else { their_node_sig },
5068 node_signature_2: if were_node_one { their_node_sig } else { our_node_sig },
5069 bitcoin_signature_1: if were_node_one { our_bitcoin_sig } else { their_bitcoin_sig },
5070 bitcoin_signature_2: if were_node_one { their_bitcoin_sig } else { our_bitcoin_sig },
5071 contents: announcement,
5074 Err(ChannelError::Ignore("Attempted to sign channel announcement before we'd received announcement_signatures".to_string()))
5078 /// Processes an incoming announcement_signatures message, providing a fully-signed
5079 /// channel_announcement message which we can broadcast and storing our counterparty's
5080 /// signatures for later reconstruction/rebroadcast of the channel_announcement.
5081 pub fn announcement_signatures(&mut self, our_node_id: PublicKey, chain_hash: BlockHash, best_block_height: u32, msg: &msgs::AnnouncementSignatures) -> Result<msgs::ChannelAnnouncement, ChannelError> {
5082 let announcement = self.get_channel_announcement(our_node_id.clone(), chain_hash)?;
5084 let msghash = hash_to_message!(&Sha256d::hash(&announcement.encode()[..])[..]);
5086 if self.secp_ctx.verify_ecdsa(&msghash, &msg.node_signature, &self.get_counterparty_node_id()).is_err() {
5087 return Err(ChannelError::Close(format!(
5088 "Bad announcement_signatures. Failed to verify node_signature. UnsignedChannelAnnouncement used for verification is {:?}. their_node_key is {:?}",
5089 &announcement, self.get_counterparty_node_id())));
5091 if self.secp_ctx.verify_ecdsa(&msghash, &msg.bitcoin_signature, self.counterparty_funding_pubkey()).is_err() {
5092 return Err(ChannelError::Close(format!(
5093 "Bad announcement_signatures. Failed to verify bitcoin_signature. UnsignedChannelAnnouncement used for verification is {:?}. their_bitcoin_key is ({:?})",
5094 &announcement, self.counterparty_funding_pubkey())));
5097 self.announcement_sigs = Some((msg.node_signature, msg.bitcoin_signature));
5098 if self.funding_tx_confirmation_height == 0 || self.funding_tx_confirmation_height + 5 > best_block_height {
5099 return Err(ChannelError::Ignore(
5100 "Got announcement_signatures prior to the required six confirmations - we may not have received a block yet that our peer has".to_owned()));
5103 self.sign_channel_announcement(our_node_id, announcement)
5106 /// Gets a signed channel_announcement for this channel, if we previously received an
5107 /// announcement_signatures from our counterparty.
5108 pub fn get_signed_channel_announcement(&self, our_node_id: PublicKey, chain_hash: BlockHash, best_block_height: u32) -> Option<msgs::ChannelAnnouncement> {
5109 if self.funding_tx_confirmation_height == 0 || self.funding_tx_confirmation_height + 5 > best_block_height {
5112 let announcement = match self.get_channel_announcement(our_node_id.clone(), chain_hash) {
5114 Err(_) => return None,
5116 match self.sign_channel_announcement(our_node_id, announcement) {
5117 Ok(res) => Some(res),
5122 /// May panic if called on a channel that wasn't immediately-previously
5123 /// self.remove_uncommitted_htlcs_and_mark_paused()'d
5124 pub fn get_channel_reestablish<L: Deref>(&self, logger: &L) -> msgs::ChannelReestablish where L::Target: Logger {
5125 assert_eq!(self.channel_state & ChannelState::PeerDisconnected as u32, ChannelState::PeerDisconnected as u32);
5126 assert_ne!(self.cur_counterparty_commitment_transaction_number, INITIAL_COMMITMENT_NUMBER);
5127 // Prior to static_remotekey, my_current_per_commitment_point was critical to claiming
5128 // current to_remote balances. However, it no longer has any use, and thus is now simply
5129 // set to a dummy (but valid, as required by the spec) public key.
5130 // fuzzing mode marks a subset of pubkeys as invalid so that we can hit "invalid pubkey"
5131 // branches, but we unwrap it below, so we arbitrarily select a dummy pubkey which is both
5132 // valid, and valid in fuzzing mode's arbitrary validity criteria:
5133 let mut pk = [2; 33]; pk[1] = 0xff;
5134 let dummy_pubkey = PublicKey::from_slice(&pk).unwrap();
5135 let data_loss_protect = if self.cur_counterparty_commitment_transaction_number + 1 < INITIAL_COMMITMENT_NUMBER {
5136 let remote_last_secret = self.commitment_secrets.get_secret(self.cur_counterparty_commitment_transaction_number + 2).unwrap();
5137 log_trace!(logger, "Enough info to generate a Data Loss Protect with per_commitment_secret {} for channel {}", log_bytes!(remote_last_secret), log_bytes!(self.channel_id()));
5138 OptionalField::Present(DataLossProtect {
5139 your_last_per_commitment_secret: remote_last_secret,
5140 my_current_per_commitment_point: dummy_pubkey
5143 log_info!(logger, "Sending a data_loss_protect with no previous remote per_commitment_secret for channel {}", log_bytes!(self.channel_id()));
5144 OptionalField::Present(DataLossProtect {
5145 your_last_per_commitment_secret: [0;32],
5146 my_current_per_commitment_point: dummy_pubkey,
5149 msgs::ChannelReestablish {
5150 channel_id: self.channel_id(),
5151 // The protocol has two different commitment number concepts - the "commitment
5152 // transaction number", which starts from 0 and counts up, and the "revocation key
5153 // index" which starts at INITIAL_COMMITMENT_NUMBER and counts down. We track
5154 // commitment transaction numbers by the index which will be used to reveal the
5155 // revocation key for that commitment transaction, which means we have to convert them
5156 // to protocol-level commitment numbers here...
5158 // next_local_commitment_number is the next commitment_signed number we expect to
5159 // receive (indicating if they need to resend one that we missed).
5160 next_local_commitment_number: INITIAL_COMMITMENT_NUMBER - self.cur_holder_commitment_transaction_number,
5161 // We have to set next_remote_commitment_number to the next revoke_and_ack we expect to
5162 // receive, however we track it by the next commitment number for a remote transaction
5163 // (which is one further, as they always revoke previous commitment transaction, not
5164 // the one we send) so we have to decrement by 1. Note that if
5165 // cur_counterparty_commitment_transaction_number is INITIAL_COMMITMENT_NUMBER we will have
5166 // dropped this channel on disconnect as it hasn't yet reached FundingSent so we can't
5168 next_remote_commitment_number: INITIAL_COMMITMENT_NUMBER - self.cur_counterparty_commitment_transaction_number - 1,
5174 // Send stuff to our remote peers:
5176 /// Adds a pending outbound HTLC to this channel, note that you probably want
5177 /// send_htlc_and_commit instead cause you'll want both messages at once.
5179 /// This returns an optional UpdateAddHTLC as we may be in a state where we cannot add HTLCs on
5181 /// * In cases where we're waiting on the remote peer to send us a revoke_and_ack, we
5182 /// wouldn't be able to determine what they actually ACK'ed if we have two sets of updates
5184 /// * In cases where we're marked MonitorUpdateFailed, we cannot commit to a new state as we
5185 /// may not yet have sent the previous commitment update messages and will need to regenerate
5188 /// You MUST call send_commitment prior to calling any other methods on this Channel!
5190 /// If an Err is returned, it's a ChannelError::Ignore!
5191 pub fn send_htlc<L: Deref>(&mut self, amount_msat: u64, payment_hash: PaymentHash, cltv_expiry: u32, source: HTLCSource, onion_routing_packet: msgs::OnionPacket, logger: &L) -> Result<Option<msgs::UpdateAddHTLC>, ChannelError> where L::Target: Logger {
5192 if (self.channel_state & (ChannelState::ChannelFunded as u32 | BOTH_SIDES_SHUTDOWN_MASK)) != (ChannelState::ChannelFunded as u32) {
5193 return Err(ChannelError::Ignore("Cannot send HTLC until channel is fully established and we haven't started shutting down".to_owned()));
5195 let channel_total_msat = self.channel_value_satoshis * 1000;
5196 if amount_msat > channel_total_msat {
5197 return Err(ChannelError::Ignore(format!("Cannot send amount {}, because it is more than the total value of the channel {}", amount_msat, channel_total_msat)));
5200 if amount_msat == 0 {
5201 return Err(ChannelError::Ignore("Cannot send 0-msat HTLC".to_owned()));
5204 if amount_msat < self.counterparty_htlc_minimum_msat {
5205 return Err(ChannelError::Ignore(format!("Cannot send less than their minimum HTLC value ({})", self.counterparty_htlc_minimum_msat)));
5208 if (self.channel_state & (ChannelState::PeerDisconnected as u32)) != 0 {
5209 // Note that this should never really happen, if we're !is_live() on receipt of an
5210 // incoming HTLC for relay will result in us rejecting the HTLC and we won't allow
5211 // the user to send directly into a !is_live() channel. However, if we
5212 // disconnected during the time the previous hop was doing the commitment dance we may
5213 // end up getting here after the forwarding delay. In any case, returning an
5214 // IgnoreError will get ChannelManager to do the right thing and fail backwards now.
5215 return Err(ChannelError::Ignore("Cannot send an HTLC while disconnected from channel counterparty".to_owned()));
5218 let inbound_stats = self.get_inbound_pending_htlc_stats(None);
5219 let outbound_stats = self.get_outbound_pending_htlc_stats(None);
5220 if outbound_stats.pending_htlcs + 1 > self.counterparty_max_accepted_htlcs as u32 {
5221 return Err(ChannelError::Ignore(format!("Cannot push more than their max accepted HTLCs ({})", self.counterparty_max_accepted_htlcs)));
5223 // Check their_max_htlc_value_in_flight_msat
5224 if outbound_stats.pending_htlcs_value_msat + amount_msat > self.counterparty_max_htlc_value_in_flight_msat {
5225 return Err(ChannelError::Ignore(format!("Cannot send value that would put us over the max HTLC value in flight our peer will accept ({})", self.counterparty_max_htlc_value_in_flight_msat)));
5228 let keys = self.build_holder_transaction_keys(self.cur_holder_commitment_transaction_number)?;
5229 let commitment_stats = self.build_commitment_transaction(self.cur_holder_commitment_transaction_number, &keys, true, true, logger);
5230 if !self.is_outbound() {
5231 // Check that we won't violate the remote channel reserve by adding this HTLC.
5232 let htlc_candidate = HTLCCandidate::new(amount_msat, HTLCInitiator::LocalOffered);
5233 let counterparty_commit_tx_fee_msat = self.next_remote_commit_tx_fee_msat(htlc_candidate, None);
5234 let holder_selected_chan_reserve_msat = self.holder_selected_channel_reserve_satoshis * 1000;
5235 if commitment_stats.remote_balance_msat < counterparty_commit_tx_fee_msat + holder_selected_chan_reserve_msat {
5236 return Err(ChannelError::Ignore("Cannot send value that would put counterparty balance under holder-announced channel reserve value".to_owned()));
5240 let exposure_dust_limit_success_sats = (self.get_dust_buffer_feerate(None) as u64 * htlc_success_tx_weight(self.opt_anchors()) / 1000) + self.counterparty_dust_limit_satoshis;
5241 if amount_msat / 1000 < exposure_dust_limit_success_sats {
5242 let on_counterparty_dust_htlc_exposure_msat = inbound_stats.on_counterparty_tx_dust_exposure_msat + outbound_stats.on_counterparty_tx_dust_exposure_msat + amount_msat;
5243 if on_counterparty_dust_htlc_exposure_msat > self.get_max_dust_htlc_exposure_msat() {
5244 return Err(ChannelError::Ignore(format!("Cannot send value that would put our exposure to dust HTLCs at {} over the limit {} on counterparty commitment tx",
5245 on_counterparty_dust_htlc_exposure_msat, self.get_max_dust_htlc_exposure_msat())));
5249 let exposure_dust_limit_timeout_sats = (self.get_dust_buffer_feerate(None) as u64 * htlc_timeout_tx_weight(self.opt_anchors()) / 1000) + self.holder_dust_limit_satoshis;
5250 if amount_msat / 1000 < exposure_dust_limit_timeout_sats {
5251 let on_holder_dust_htlc_exposure_msat = inbound_stats.on_holder_tx_dust_exposure_msat + outbound_stats.on_holder_tx_dust_exposure_msat + amount_msat;
5252 if on_holder_dust_htlc_exposure_msat > self.get_max_dust_htlc_exposure_msat() {
5253 return Err(ChannelError::Ignore(format!("Cannot send value that would put our exposure to dust HTLCs at {} over the limit {} on holder commitment tx",
5254 on_holder_dust_htlc_exposure_msat, self.get_max_dust_htlc_exposure_msat())));
5258 let holder_balance_msat = commitment_stats.local_balance_msat - outbound_stats.holding_cell_msat;
5259 if holder_balance_msat < amount_msat {
5260 return Err(ChannelError::Ignore(format!("Cannot send value that would overdraw remaining funds. Amount: {}, pending value to self {}", amount_msat, holder_balance_msat)));
5263 // `2 *` and extra HTLC are for the fee spike buffer.
5264 let commit_tx_fee_msat = if self.is_outbound() {
5265 let htlc_candidate = HTLCCandidate::new(amount_msat, HTLCInitiator::LocalOffered);
5266 FEE_SPIKE_BUFFER_FEE_INCREASE_MULTIPLE * self.next_local_commit_tx_fee_msat(htlc_candidate, Some(()))
5268 if holder_balance_msat - amount_msat < commit_tx_fee_msat {
5269 return Err(ChannelError::Ignore(format!("Cannot send value that would not leave enough to pay for fees. Pending value to self: {}. local_commit_tx_fee {}", holder_balance_msat, commit_tx_fee_msat)));
5272 // Check self.counterparty_selected_channel_reserve_satoshis (the amount we must keep as
5273 // reserve for the remote to have something to claim if we misbehave)
5274 let chan_reserve_msat = self.counterparty_selected_channel_reserve_satoshis.unwrap() * 1000;
5275 if holder_balance_msat - amount_msat - commit_tx_fee_msat < chan_reserve_msat {
5276 return Err(ChannelError::Ignore(format!("Cannot send value that would put our balance under counterparty-announced channel reserve value ({})", chan_reserve_msat)));
5279 // Now update local state:
5280 if (self.channel_state & (ChannelState::AwaitingRemoteRevoke as u32 | ChannelState::MonitorUpdateFailed as u32)) != 0 {
5281 self.holding_cell_htlc_updates.push(HTLCUpdateAwaitingACK::AddHTLC {
5286 onion_routing_packet,
5291 self.pending_outbound_htlcs.push(OutboundHTLCOutput {
5292 htlc_id: self.next_holder_htlc_id,
5294 payment_hash: payment_hash.clone(),
5296 state: OutboundHTLCState::LocalAnnounced(Box::new(onion_routing_packet.clone())),
5300 let res = msgs::UpdateAddHTLC {
5301 channel_id: self.channel_id,
5302 htlc_id: self.next_holder_htlc_id,
5306 onion_routing_packet,
5308 self.next_holder_htlc_id += 1;
5313 /// Creates a signed commitment transaction to send to the remote peer.
5314 /// Always returns a ChannelError::Close if an immediately-preceding (read: the
5315 /// last call to this Channel) send_htlc returned Ok(Some(_)) and there is an Err.
5316 /// May panic if called except immediately after a successful, Ok(Some(_))-returning send_htlc.
5317 pub fn send_commitment<L: Deref>(&mut self, logger: &L) -> Result<(msgs::CommitmentSigned, ChannelMonitorUpdate), ChannelError> where L::Target: Logger {
5318 if (self.channel_state & (ChannelState::ChannelFunded as u32)) != (ChannelState::ChannelFunded as u32) {
5319 panic!("Cannot create commitment tx until channel is fully established");
5321 if (self.channel_state & (ChannelState::AwaitingRemoteRevoke as u32)) == (ChannelState::AwaitingRemoteRevoke as u32) {
5322 panic!("Cannot create commitment tx until remote revokes their previous commitment");
5324 if (self.channel_state & (ChannelState::PeerDisconnected as u32)) == (ChannelState::PeerDisconnected as u32) {
5325 panic!("Cannot create commitment tx while disconnected, as send_htlc will have returned an Err so a send_commitment precondition has been violated");
5327 if (self.channel_state & (ChannelState::MonitorUpdateFailed as u32)) == (ChannelState::MonitorUpdateFailed as u32) {
5328 panic!("Cannot create commitment tx while awaiting monitor update unfreeze, as send_htlc will have returned an Err so a send_commitment precondition has been violated");
5330 let mut have_updates = self.is_outbound() && self.pending_update_fee.is_some();
5331 for htlc in self.pending_outbound_htlcs.iter() {
5332 if let OutboundHTLCState::LocalAnnounced(_) = htlc.state {
5333 have_updates = true;
5335 if have_updates { break; }
5337 for htlc in self.pending_inbound_htlcs.iter() {
5338 if let InboundHTLCState::LocalRemoved(_) = htlc.state {
5339 have_updates = true;
5341 if have_updates { break; }
5344 panic!("Cannot create commitment tx until we have some updates to send");
5346 self.send_commitment_no_status_check(logger)
5348 /// Only fails in case of bad keys
5349 fn send_commitment_no_status_check<L: Deref>(&mut self, logger: &L) -> Result<(msgs::CommitmentSigned, ChannelMonitorUpdate), ChannelError> where L::Target: Logger {
5350 log_trace!(logger, "Updating HTLC state for a newly-sent commitment_signed...");
5351 // We can upgrade the status of some HTLCs that are waiting on a commitment, even if we
5352 // fail to generate this, we still are at least at a position where upgrading their status
5354 for htlc in self.pending_inbound_htlcs.iter_mut() {
5355 let new_state = if let &InboundHTLCState::AwaitingRemoteRevokeToAnnounce(ref forward_info) = &htlc.state {
5356 Some(InboundHTLCState::AwaitingAnnouncedRemoteRevoke(forward_info.clone()))
5358 if let Some(state) = new_state {
5359 log_trace!(logger, " ...promoting inbound AwaitingRemoteRevokeToAnnounce {} to AwaitingAnnouncedRemoteRevoke", log_bytes!(htlc.payment_hash.0));
5363 for htlc in self.pending_outbound_htlcs.iter_mut() {
5364 if let &mut OutboundHTLCState::AwaitingRemoteRevokeToRemove(ref mut outcome) = &mut htlc.state {
5365 log_trace!(logger, " ...promoting outbound AwaitingRemoteRevokeToRemove {} to AwaitingRemovedRemoteRevoke", log_bytes!(htlc.payment_hash.0));
5366 // Grab the preimage, if it exists, instead of cloning
5367 let mut reason = OutboundHTLCOutcome::Success(None);
5368 mem::swap(outcome, &mut reason);
5369 htlc.state = OutboundHTLCState::AwaitingRemovedRemoteRevoke(reason);
5372 if let Some((feerate, update_state)) = self.pending_update_fee {
5373 if update_state == FeeUpdateState::AwaitingRemoteRevokeToAnnounce {
5374 debug_assert!(!self.is_outbound());
5375 log_trace!(logger, " ...promoting inbound AwaitingRemoteRevokeToAnnounce fee update {} to Committed", feerate);
5376 self.feerate_per_kw = feerate;
5377 self.pending_update_fee = None;
5380 self.resend_order = RAACommitmentOrder::RevokeAndACKFirst;
5382 let (res, counterparty_commitment_txid, htlcs) = match self.send_commitment_no_state_update(logger) {
5383 Ok((res, (counterparty_commitment_tx, mut htlcs))) => {
5384 // Update state now that we've passed all the can-fail calls...
5385 let htlcs_no_ref: Vec<(HTLCOutputInCommitment, Option<Box<HTLCSource>>)> =
5386 htlcs.drain(..).map(|(htlc, htlc_source)| (htlc, htlc_source.map(|source_ref| Box::new(source_ref.clone())))).collect();
5387 (res, counterparty_commitment_tx, htlcs_no_ref)
5389 Err(e) => return Err(e),
5392 if self.announcement_sigs_state == AnnouncementSigsState::MessageSent {
5393 self.announcement_sigs_state = AnnouncementSigsState::Committed;
5396 self.latest_monitor_update_id += 1;
5397 let monitor_update = ChannelMonitorUpdate {
5398 update_id: self.latest_monitor_update_id,
5399 updates: vec![ChannelMonitorUpdateStep::LatestCounterpartyCommitmentTXInfo {
5400 commitment_txid: counterparty_commitment_txid,
5401 htlc_outputs: htlcs.clone(),
5402 commitment_number: self.cur_counterparty_commitment_transaction_number,
5403 their_revocation_point: self.counterparty_cur_commitment_point.unwrap()
5406 self.channel_state |= ChannelState::AwaitingRemoteRevoke as u32;
5407 Ok((res, monitor_update))
5410 /// Only fails in case of bad keys. Used for channel_reestablish commitment_signed generation
5411 /// when we shouldn't change HTLC/channel state.
5412 fn send_commitment_no_state_update<L: Deref>(&self, logger: &L) -> Result<(msgs::CommitmentSigned, (Txid, Vec<(HTLCOutputInCommitment, Option<&HTLCSource>)>)), ChannelError> where L::Target: Logger {
5413 let counterparty_keys = self.build_remote_transaction_keys()?;
5414 let commitment_stats = self.build_commitment_transaction(self.cur_counterparty_commitment_transaction_number, &counterparty_keys, false, true, logger);
5415 let counterparty_commitment_txid = commitment_stats.tx.trust().txid();
5416 let (signature, htlc_signatures);
5418 #[cfg(any(test, fuzzing))]
5420 if !self.is_outbound() {
5421 let projected_commit_tx_info = self.next_remote_commitment_tx_fee_info_cached.lock().unwrap().take();
5422 *self.next_local_commitment_tx_fee_info_cached.lock().unwrap() = None;
5423 if let Some(info) = projected_commit_tx_info {
5424 let total_pending_htlcs = self.pending_inbound_htlcs.len() + self.pending_outbound_htlcs.len();
5425 if info.total_pending_htlcs == total_pending_htlcs
5426 && info.next_holder_htlc_id == self.next_holder_htlc_id
5427 && info.next_counterparty_htlc_id == self.next_counterparty_htlc_id
5428 && info.feerate == self.feerate_per_kw {
5429 let actual_fee = Self::commit_tx_fee_msat(self.feerate_per_kw, commitment_stats.num_nondust_htlcs, self.opt_anchors());
5430 assert_eq!(actual_fee, info.fee);
5437 let mut htlcs = Vec::with_capacity(commitment_stats.htlcs_included.len());
5438 for &(ref htlc, _) in commitment_stats.htlcs_included.iter() {
5442 let res = self.holder_signer.sign_counterparty_commitment(&commitment_stats.tx, commitment_stats.preimages, &self.secp_ctx)
5443 .map_err(|_| ChannelError::Close("Failed to get signatures for new commitment_signed".to_owned()))?;
5445 htlc_signatures = res.1;
5447 log_trace!(logger, "Signed remote commitment tx {} (txid {}) with redeemscript {} -> {} in channel {}",
5448 encode::serialize_hex(&commitment_stats.tx.trust().built_transaction().transaction),
5449 &counterparty_commitment_txid, encode::serialize_hex(&self.get_funding_redeemscript()),
5450 log_bytes!(signature.serialize_compact()[..]), log_bytes!(self.channel_id()));
5452 for (ref htlc_sig, ref htlc) in htlc_signatures.iter().zip(htlcs) {
5453 log_trace!(logger, "Signed remote HTLC tx {} with redeemscript {} with pubkey {} -> {} in channel {}",
5454 encode::serialize_hex(&chan_utils::build_htlc_transaction(&counterparty_commitment_txid, commitment_stats.feerate_per_kw, self.get_holder_selected_contest_delay(), htlc, self.opt_anchors(), &counterparty_keys.broadcaster_delayed_payment_key, &counterparty_keys.revocation_key)),
5455 encode::serialize_hex(&chan_utils::get_htlc_redeemscript(&htlc, self.opt_anchors(), &counterparty_keys)),
5456 log_bytes!(counterparty_keys.broadcaster_htlc_key.serialize()),
5457 log_bytes!(htlc_sig.serialize_compact()[..]), log_bytes!(self.channel_id()));
5461 Ok((msgs::CommitmentSigned {
5462 channel_id: self.channel_id,
5465 }, (counterparty_commitment_txid, commitment_stats.htlcs_included)))
5468 /// Adds a pending outbound HTLC to this channel, and creates a signed commitment transaction
5469 /// to send to the remote peer in one go.
5470 /// Shorthand for calling send_htlc() followed by send_commitment(), see docs on those for
5472 pub fn send_htlc_and_commit<L: Deref>(&mut self, amount_msat: u64, payment_hash: PaymentHash, cltv_expiry: u32, source: HTLCSource, onion_routing_packet: msgs::OnionPacket, logger: &L) -> Result<Option<(msgs::UpdateAddHTLC, msgs::CommitmentSigned, ChannelMonitorUpdate)>, ChannelError> where L::Target: Logger {
5473 match self.send_htlc(amount_msat, payment_hash, cltv_expiry, source, onion_routing_packet, logger)? {
5474 Some(update_add_htlc) => {
5475 let (commitment_signed, monitor_update) = self.send_commitment_no_status_check(logger)?;
5476 Ok(Some((update_add_htlc, commitment_signed, monitor_update)))
5482 /// Get forwarding information for the counterparty.
5483 pub fn counterparty_forwarding_info(&self) -> Option<CounterpartyForwardingInfo> {
5484 self.counterparty_forwarding_info.clone()
5487 pub fn channel_update(&mut self, msg: &msgs::ChannelUpdate) -> Result<(), ChannelError> {
5488 if msg.contents.htlc_minimum_msat >= self.channel_value_satoshis * 1000 {
5489 return Err(ChannelError::Close("Minimum htlc value is greater than channel value".to_string()));
5491 self.counterparty_forwarding_info = Some(CounterpartyForwardingInfo {
5492 fee_base_msat: msg.contents.fee_base_msat,
5493 fee_proportional_millionths: msg.contents.fee_proportional_millionths,
5494 cltv_expiry_delta: msg.contents.cltv_expiry_delta
5500 /// Begins the shutdown process, getting a message for the remote peer and returning all
5501 /// holding cell HTLCs for payment failure.
5502 pub fn get_shutdown<K: Deref>(&mut self, keys_provider: &K, their_features: &InitFeatures, target_feerate_sats_per_kw: Option<u32>)
5503 -> Result<(msgs::Shutdown, Option<ChannelMonitorUpdate>, Vec<(HTLCSource, PaymentHash)>), APIError>
5504 where K::Target: KeysInterface<Signer = Signer> {
5505 for htlc in self.pending_outbound_htlcs.iter() {
5506 if let OutboundHTLCState::LocalAnnounced(_) = htlc.state {
5507 return Err(APIError::APIMisuseError{err: "Cannot begin shutdown with pending HTLCs. Process pending events first".to_owned()});
5510 if self.channel_state & BOTH_SIDES_SHUTDOWN_MASK != 0 {
5511 if (self.channel_state & ChannelState::LocalShutdownSent as u32) == ChannelState::LocalShutdownSent as u32 {
5512 return Err(APIError::APIMisuseError{err: "Shutdown already in progress".to_owned()});
5514 else if (self.channel_state & ChannelState::RemoteShutdownSent as u32) == ChannelState::RemoteShutdownSent as u32 {
5515 return Err(APIError::ChannelUnavailable{err: "Shutdown already in progress by remote".to_owned()});
5518 assert_eq!(self.channel_state & ChannelState::ShutdownComplete as u32, 0);
5519 if self.channel_state & (ChannelState::PeerDisconnected as u32 | ChannelState::MonitorUpdateFailed as u32) != 0 {
5520 return Err(APIError::ChannelUnavailable{err: "Cannot begin shutdown while peer is disconnected or we're waiting on a monitor update, maybe force-close instead?".to_owned()});
5523 let update_shutdown_script = match self.shutdown_scriptpubkey {
5526 let shutdown_scriptpubkey = keys_provider.get_shutdown_scriptpubkey();
5527 if !shutdown_scriptpubkey.is_compatible(their_features) {
5528 return Err(APIError::IncompatibleShutdownScript { script: shutdown_scriptpubkey.clone() });
5530 self.shutdown_scriptpubkey = Some(shutdown_scriptpubkey);
5535 // From here on out, we may not fail!
5536 self.target_closing_feerate_sats_per_kw = target_feerate_sats_per_kw;
5537 if self.channel_state < ChannelState::FundingSent as u32 {
5538 self.channel_state = ChannelState::ShutdownComplete as u32;
5540 self.channel_state |= ChannelState::LocalShutdownSent as u32;
5542 self.update_time_counter += 1;
5544 let monitor_update = if update_shutdown_script {
5545 self.latest_monitor_update_id += 1;
5546 Some(ChannelMonitorUpdate {
5547 update_id: self.latest_monitor_update_id,
5548 updates: vec![ChannelMonitorUpdateStep::ShutdownScript {
5549 scriptpubkey: self.get_closing_scriptpubkey(),
5553 let shutdown = msgs::Shutdown {
5554 channel_id: self.channel_id,
5555 scriptpubkey: self.get_closing_scriptpubkey(),
5558 // Go ahead and drop holding cell updates as we'd rather fail payments than wait to send
5559 // our shutdown until we've committed all of the pending changes.
5560 self.holding_cell_update_fee = None;
5561 let mut dropped_outbound_htlcs = Vec::with_capacity(self.holding_cell_htlc_updates.len());
5562 self.holding_cell_htlc_updates.retain(|htlc_update| {
5564 &HTLCUpdateAwaitingACK::AddHTLC { ref payment_hash, ref source, .. } => {
5565 dropped_outbound_htlcs.push((source.clone(), payment_hash.clone()));
5572 Ok((shutdown, monitor_update, dropped_outbound_htlcs))
5575 /// Gets the latest commitment transaction and any dependent transactions for relay (forcing
5576 /// shutdown of this channel - no more calls into this Channel may be made afterwards except
5577 /// those explicitly stated to be allowed after shutdown completes, eg some simple getters).
5578 /// Also returns the list of payment_hashes for channels which we can safely fail backwards
5579 /// immediately (others we will have to allow to time out).
5580 pub fn force_shutdown(&mut self, should_broadcast: bool) -> (Option<(OutPoint, ChannelMonitorUpdate)>, Vec<(HTLCSource, PaymentHash)>) {
5581 // Note that we MUST only generate a monitor update that indicates force-closure - we're
5582 // called during initialization prior to the chain_monitor in the encompassing ChannelManager
5583 // being fully configured in some cases. Thus, its likely any monitor events we generate will
5584 // be delayed in being processed! See the docs for `ChannelManagerReadArgs` for more.
5585 assert!(self.channel_state != ChannelState::ShutdownComplete as u32);
5587 // We go ahead and "free" any holding cell HTLCs or HTLCs we haven't yet committed to and
5588 // return them to fail the payment.
5589 let mut dropped_outbound_htlcs = Vec::with_capacity(self.holding_cell_htlc_updates.len());
5590 for htlc_update in self.holding_cell_htlc_updates.drain(..) {
5592 HTLCUpdateAwaitingACK::AddHTLC { source, payment_hash, .. } => {
5593 dropped_outbound_htlcs.push((source, payment_hash));
5598 let monitor_update = if let Some(funding_txo) = self.get_funding_txo() {
5599 // If we haven't yet exchanged funding signatures (ie channel_state < FundingSent),
5600 // returning a channel monitor update here would imply a channel monitor update before
5601 // we even registered the channel monitor to begin with, which is invalid.
5602 // Thus, if we aren't actually at a point where we could conceivably broadcast the
5603 // funding transaction, don't return a funding txo (which prevents providing the
5604 // monitor update to the user, even if we return one).
5605 // See test_duplicate_chan_id and test_pre_lockin_no_chan_closed_update for more.
5606 if self.channel_state & (ChannelState::FundingSent as u32 | ChannelState::ChannelFunded as u32 | ChannelState::ShutdownComplete as u32) != 0 {
5607 self.latest_monitor_update_id += 1;
5608 Some((funding_txo, ChannelMonitorUpdate {
5609 update_id: self.latest_monitor_update_id,
5610 updates: vec![ChannelMonitorUpdateStep::ChannelForceClosed { should_broadcast }],
5615 self.channel_state = ChannelState::ShutdownComplete as u32;
5616 self.update_time_counter += 1;
5617 (monitor_update, dropped_outbound_htlcs)
5621 const SERIALIZATION_VERSION: u8 = 2;
5622 const MIN_SERIALIZATION_VERSION: u8 = 1;
5624 impl_writeable_tlv_based_enum!(InboundHTLCRemovalReason,;
5630 impl Writeable for ChannelUpdateStatus {
5631 fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
5632 // We only care about writing out the current state as it was announced, ie only either
5633 // Enabled or Disabled. In the case of DisabledStaged, we most recently announced the
5634 // channel as enabled, so we write 0. For EnabledStaged, we similarly write a 1.
5636 ChannelUpdateStatus::Enabled => 0u8.write(writer)?,
5637 ChannelUpdateStatus::DisabledStaged => 0u8.write(writer)?,
5638 ChannelUpdateStatus::EnabledStaged => 1u8.write(writer)?,
5639 ChannelUpdateStatus::Disabled => 1u8.write(writer)?,
5645 impl Readable for ChannelUpdateStatus {
5646 fn read<R: io::Read>(reader: &mut R) -> Result<Self, DecodeError> {
5647 Ok(match <u8 as Readable>::read(reader)? {
5648 0 => ChannelUpdateStatus::Enabled,
5649 1 => ChannelUpdateStatus::Disabled,
5650 _ => return Err(DecodeError::InvalidValue),
5655 impl Writeable for AnnouncementSigsState {
5656 fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
5657 // We only care about writing out the current state as if we had just disconnected, at
5658 // which point we always set anything but AnnouncementSigsReceived to NotSent.
5660 AnnouncementSigsState::NotSent => 0u8.write(writer),
5661 AnnouncementSigsState::MessageSent => 0u8.write(writer),
5662 AnnouncementSigsState::Committed => 0u8.write(writer),
5663 AnnouncementSigsState::PeerReceived => 1u8.write(writer),
5668 impl Readable for AnnouncementSigsState {
5669 fn read<R: io::Read>(reader: &mut R) -> Result<Self, DecodeError> {
5670 Ok(match <u8 as Readable>::read(reader)? {
5671 0 => AnnouncementSigsState::NotSent,
5672 1 => AnnouncementSigsState::PeerReceived,
5673 _ => return Err(DecodeError::InvalidValue),
5678 impl<Signer: Sign> Writeable for Channel<Signer> {
5679 fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
5680 // Note that we write out as if remove_uncommitted_htlcs_and_mark_paused had just been
5683 write_ver_prefix!(writer, SERIALIZATION_VERSION, MIN_SERIALIZATION_VERSION);
5685 self.user_id.write(writer)?;
5687 // Write out the old serialization for the config object. This is read by version-1
5688 // deserializers, but we will read the version in the TLV at the end instead.
5689 self.config.forwarding_fee_proportional_millionths.write(writer)?;
5690 self.config.cltv_expiry_delta.write(writer)?;
5691 self.config.announced_channel.write(writer)?;
5692 self.config.commit_upfront_shutdown_pubkey.write(writer)?;
5694 self.channel_id.write(writer)?;
5695 (self.channel_state | ChannelState::PeerDisconnected as u32).write(writer)?;
5696 self.channel_value_satoshis.write(writer)?;
5698 self.latest_monitor_update_id.write(writer)?;
5700 let mut key_data = VecWriter(Vec::new());
5701 self.holder_signer.write(&mut key_data)?;
5702 assert!(key_data.0.len() < core::usize::MAX);
5703 assert!(key_data.0.len() < core::u32::MAX as usize);
5704 (key_data.0.len() as u32).write(writer)?;
5705 writer.write_all(&key_data.0[..])?;
5707 // Write out the old serialization for shutdown_pubkey for backwards compatibility, if
5708 // deserialized from that format.
5709 match self.shutdown_scriptpubkey.as_ref().and_then(|script| script.as_legacy_pubkey()) {
5710 Some(shutdown_pubkey) => shutdown_pubkey.write(writer)?,
5711 None => [0u8; PUBLIC_KEY_SIZE].write(writer)?,
5713 self.destination_script.write(writer)?;
5715 self.cur_holder_commitment_transaction_number.write(writer)?;
5716 self.cur_counterparty_commitment_transaction_number.write(writer)?;
5717 self.value_to_self_msat.write(writer)?;
5719 let mut dropped_inbound_htlcs = 0;
5720 for htlc in self.pending_inbound_htlcs.iter() {
5721 if let InboundHTLCState::RemoteAnnounced(_) = htlc.state {
5722 dropped_inbound_htlcs += 1;
5725 (self.pending_inbound_htlcs.len() as u64 - dropped_inbound_htlcs).write(writer)?;
5726 for htlc in self.pending_inbound_htlcs.iter() {
5727 if let &InboundHTLCState::RemoteAnnounced(_) = &htlc.state {
5730 htlc.htlc_id.write(writer)?;
5731 htlc.amount_msat.write(writer)?;
5732 htlc.cltv_expiry.write(writer)?;
5733 htlc.payment_hash.write(writer)?;
5735 &InboundHTLCState::RemoteAnnounced(_) => unreachable!(),
5736 &InboundHTLCState::AwaitingRemoteRevokeToAnnounce(ref htlc_state) => {
5738 htlc_state.write(writer)?;
5740 &InboundHTLCState::AwaitingAnnouncedRemoteRevoke(ref htlc_state) => {
5742 htlc_state.write(writer)?;
5744 &InboundHTLCState::Committed => {
5747 &InboundHTLCState::LocalRemoved(ref removal_reason) => {
5749 removal_reason.write(writer)?;
5754 let mut preimages: Vec<&Option<PaymentPreimage>> = vec![];
5756 (self.pending_outbound_htlcs.len() as u64).write(writer)?;
5757 for htlc in self.pending_outbound_htlcs.iter() {
5758 htlc.htlc_id.write(writer)?;
5759 htlc.amount_msat.write(writer)?;
5760 htlc.cltv_expiry.write(writer)?;
5761 htlc.payment_hash.write(writer)?;
5762 htlc.source.write(writer)?;
5764 &OutboundHTLCState::LocalAnnounced(ref onion_packet) => {
5766 onion_packet.write(writer)?;
5768 &OutboundHTLCState::Committed => {
5771 &OutboundHTLCState::RemoteRemoved(_) => {
5772 // Treat this as a Committed because we haven't received the CS - they'll
5773 // resend the claim/fail on reconnect as we all (hopefully) the missing CS.
5776 &OutboundHTLCState::AwaitingRemoteRevokeToRemove(ref outcome) => {
5778 if let OutboundHTLCOutcome::Success(preimage) = outcome {
5779 preimages.push(preimage);
5781 let reason: Option<&HTLCFailReason> = outcome.into();
5782 reason.write(writer)?;
5784 &OutboundHTLCState::AwaitingRemovedRemoteRevoke(ref outcome) => {
5786 if let OutboundHTLCOutcome::Success(preimage) = outcome {
5787 preimages.push(preimage);
5789 let reason: Option<&HTLCFailReason> = outcome.into();
5790 reason.write(writer)?;
5795 (self.holding_cell_htlc_updates.len() as u64).write(writer)?;
5796 for update in self.holding_cell_htlc_updates.iter() {
5798 &HTLCUpdateAwaitingACK::AddHTLC { ref amount_msat, ref cltv_expiry, ref payment_hash, ref source, ref onion_routing_packet } => {
5800 amount_msat.write(writer)?;
5801 cltv_expiry.write(writer)?;
5802 payment_hash.write(writer)?;
5803 source.write(writer)?;
5804 onion_routing_packet.write(writer)?;
5806 &HTLCUpdateAwaitingACK::ClaimHTLC { ref payment_preimage, ref htlc_id } => {
5808 payment_preimage.write(writer)?;
5809 htlc_id.write(writer)?;
5811 &HTLCUpdateAwaitingACK::FailHTLC { ref htlc_id, ref err_packet } => {
5813 htlc_id.write(writer)?;
5814 err_packet.write(writer)?;
5819 match self.resend_order {
5820 RAACommitmentOrder::CommitmentFirst => 0u8.write(writer)?,
5821 RAACommitmentOrder::RevokeAndACKFirst => 1u8.write(writer)?,
5824 self.monitor_pending_funding_locked.write(writer)?;
5825 self.monitor_pending_revoke_and_ack.write(writer)?;
5826 self.monitor_pending_commitment_signed.write(writer)?;
5828 (self.monitor_pending_forwards.len() as u64).write(writer)?;
5829 for &(ref pending_forward, ref htlc_id) in self.monitor_pending_forwards.iter() {
5830 pending_forward.write(writer)?;
5831 htlc_id.write(writer)?;
5834 (self.monitor_pending_failures.len() as u64).write(writer)?;
5835 for &(ref htlc_source, ref payment_hash, ref fail_reason) in self.monitor_pending_failures.iter() {
5836 htlc_source.write(writer)?;
5837 payment_hash.write(writer)?;
5838 fail_reason.write(writer)?;
5841 if self.is_outbound() {
5842 self.pending_update_fee.map(|(a, _)| a).write(writer)?;
5843 } else if let Some((feerate, FeeUpdateState::AwaitingRemoteRevokeToAnnounce)) = self.pending_update_fee {
5844 Some(feerate).write(writer)?;
5846 // As for inbound HTLCs, if the update was only announced and never committed in a
5847 // commitment_signed, drop it.
5848 None::<u32>.write(writer)?;
5850 self.holding_cell_update_fee.write(writer)?;
5852 self.next_holder_htlc_id.write(writer)?;
5853 (self.next_counterparty_htlc_id - dropped_inbound_htlcs).write(writer)?;
5854 self.update_time_counter.write(writer)?;
5855 self.feerate_per_kw.write(writer)?;
5857 // Versions prior to 0.0.100 expected to read the fields of `last_sent_closing_fee` here,
5858 // however we are supposed to restart shutdown fee negotiation on reconnect (and wipe
5859 // `last_send_closing_fee` in `remove_uncommitted_htlcs_and_mark_paused`) so we should never
5860 // consider the stale state on reload.
5863 self.funding_tx_confirmed_in.write(writer)?;
5864 self.funding_tx_confirmation_height.write(writer)?;
5865 self.short_channel_id.write(writer)?;
5867 self.counterparty_dust_limit_satoshis.write(writer)?;
5868 self.holder_dust_limit_satoshis.write(writer)?;
5869 self.counterparty_max_htlc_value_in_flight_msat.write(writer)?;
5871 // Note that this field is ignored by 0.0.99+ as the TLV Optional variant is used instead.
5872 self.counterparty_selected_channel_reserve_satoshis.unwrap_or(0).write(writer)?;
5874 self.counterparty_htlc_minimum_msat.write(writer)?;
5875 self.holder_htlc_minimum_msat.write(writer)?;
5876 self.counterparty_max_accepted_htlcs.write(writer)?;
5878 // Note that this field is ignored by 0.0.99+ as the TLV Optional variant is used instead.
5879 self.minimum_depth.unwrap_or(0).write(writer)?;
5881 match &self.counterparty_forwarding_info {
5884 info.fee_base_msat.write(writer)?;
5885 info.fee_proportional_millionths.write(writer)?;
5886 info.cltv_expiry_delta.write(writer)?;
5888 None => 0u8.write(writer)?
5891 self.channel_transaction_parameters.write(writer)?;
5892 self.funding_transaction.write(writer)?;
5894 self.counterparty_cur_commitment_point.write(writer)?;
5895 self.counterparty_prev_commitment_point.write(writer)?;
5896 self.counterparty_node_id.write(writer)?;
5898 self.counterparty_shutdown_scriptpubkey.write(writer)?;
5900 self.commitment_secrets.write(writer)?;
5902 self.channel_update_status.write(writer)?;
5904 #[cfg(any(test, fuzzing))]
5905 (self.historical_inbound_htlc_fulfills.len() as u64).write(writer)?;
5906 #[cfg(any(test, fuzzing))]
5907 for htlc in self.historical_inbound_htlc_fulfills.iter() {
5908 htlc.write(writer)?;
5911 // If the channel type is something other than only-static-remote-key, then we need to have
5912 // older clients fail to deserialize this channel at all. If the type is
5913 // only-static-remote-key, we simply consider it "default" and don't write the channel type
5915 let chan_type = if self.channel_type != ChannelTypeFeatures::only_static_remote_key() {
5916 Some(&self.channel_type) } else { None };
5918 // The same logic applies for `holder_selected_channel_reserve_satoshis` values other than
5919 // the default, and when `holder_max_htlc_value_in_flight_msat` is configured to be set to
5920 // a different percentage of the channel value then 10%, which older versions of LDK used
5921 // to set it to before the percentage was made configurable.
5922 let serialized_holder_selected_reserve =
5923 if self.holder_selected_channel_reserve_satoshis != Self::get_holder_selected_channel_reserve_satoshis(self.channel_value_satoshis)
5924 { Some(self.holder_selected_channel_reserve_satoshis) } else { None };
5926 let mut old_max_in_flight_percent_config = UserConfig::default().own_channel_config;
5927 old_max_in_flight_percent_config.max_inbound_htlc_value_in_flight_percent_of_channel = MAX_IN_FLIGHT_PERCENT_LEGACY;
5928 let serialized_holder_htlc_max_in_flight =
5929 if self.holder_max_htlc_value_in_flight_msat != Self::get_holder_max_htlc_value_in_flight_msat(self.channel_value_satoshis, &old_max_in_flight_percent_config)
5930 { Some(self.holder_max_htlc_value_in_flight_msat) } else { None };
5932 write_tlv_fields!(writer, {
5933 (0, self.announcement_sigs, option),
5934 // minimum_depth and counterparty_selected_channel_reserve_satoshis used to have a
5935 // default value instead of being Option<>al. Thus, to maintain compatibility we write
5936 // them twice, once with their original default values above, and once as an option
5937 // here. On the read side, old versions will simply ignore the odd-type entries here,
5938 // and new versions map the default values to None and allow the TLV entries here to
5940 (1, self.minimum_depth, option),
5941 (2, chan_type, option),
5942 (3, self.counterparty_selected_channel_reserve_satoshis, option),
5943 (4, serialized_holder_selected_reserve, option),
5944 (5, self.config, required),
5945 (6, serialized_holder_htlc_max_in_flight, option),
5946 (7, self.shutdown_scriptpubkey, option),
5947 (9, self.target_closing_feerate_sats_per_kw, option),
5948 (11, self.monitor_pending_finalized_fulfills, vec_type),
5949 (13, self.channel_creation_height, required),
5950 (15, preimages, vec_type),
5951 (17, self.announcement_sigs_state, required),
5952 (19, self.latest_inbound_scid_alias, option),
5953 (21, self.outbound_scid_alias, required),
5960 const MAX_ALLOC_SIZE: usize = 64*1024;
5961 impl<'a, Signer: Sign, K: Deref> ReadableArgs<(&'a K, u32)> for Channel<Signer>
5962 where K::Target: KeysInterface<Signer = Signer> {
5963 fn read<R : io::Read>(reader: &mut R, args: (&'a K, u32)) -> Result<Self, DecodeError> {
5964 let (keys_source, serialized_height) = args;
5965 let ver = read_ver_prefix!(reader, SERIALIZATION_VERSION);
5967 let user_id = Readable::read(reader)?;
5969 let mut config = Some(ChannelConfig::default());
5971 // Read the old serialization of the ChannelConfig from version 0.0.98.
5972 config.as_mut().unwrap().forwarding_fee_proportional_millionths = Readable::read(reader)?;
5973 config.as_mut().unwrap().cltv_expiry_delta = Readable::read(reader)?;
5974 config.as_mut().unwrap().announced_channel = Readable::read(reader)?;
5975 config.as_mut().unwrap().commit_upfront_shutdown_pubkey = Readable::read(reader)?;
5977 // Read the 8 bytes of backwards-compatibility ChannelConfig data.
5978 let mut _val: u64 = Readable::read(reader)?;
5981 let channel_id = Readable::read(reader)?;
5982 let channel_state = Readable::read(reader)?;
5983 let channel_value_satoshis = Readable::read(reader)?;
5985 let latest_monitor_update_id = Readable::read(reader)?;
5987 let keys_len: u32 = Readable::read(reader)?;
5988 let mut keys_data = Vec::with_capacity(cmp::min(keys_len as usize, MAX_ALLOC_SIZE));
5989 while keys_data.len() != keys_len as usize {
5990 // Read 1KB at a time to avoid accidentally allocating 4GB on corrupted channel keys
5991 let mut data = [0; 1024];
5992 let read_slice = &mut data[0..cmp::min(1024, keys_len as usize - keys_data.len())];
5993 reader.read_exact(read_slice)?;
5994 keys_data.extend_from_slice(read_slice);
5996 let holder_signer = keys_source.read_chan_signer(&keys_data)?;
5998 // Read the old serialization for shutdown_pubkey, preferring the TLV field later if set.
5999 let mut shutdown_scriptpubkey = match <PublicKey as Readable>::read(reader) {
6000 Ok(pubkey) => Some(ShutdownScript::new_p2wpkh_from_pubkey(pubkey)),
6003 let destination_script = Readable::read(reader)?;
6005 let cur_holder_commitment_transaction_number = Readable::read(reader)?;
6006 let cur_counterparty_commitment_transaction_number = Readable::read(reader)?;
6007 let value_to_self_msat = Readable::read(reader)?;
6009 let pending_inbound_htlc_count: u64 = Readable::read(reader)?;
6010 let mut pending_inbound_htlcs = Vec::with_capacity(cmp::min(pending_inbound_htlc_count as usize, OUR_MAX_HTLCS as usize));
6011 for _ in 0..pending_inbound_htlc_count {
6012 pending_inbound_htlcs.push(InboundHTLCOutput {
6013 htlc_id: Readable::read(reader)?,
6014 amount_msat: Readable::read(reader)?,
6015 cltv_expiry: Readable::read(reader)?,
6016 payment_hash: Readable::read(reader)?,
6017 state: match <u8 as Readable>::read(reader)? {
6018 1 => InboundHTLCState::AwaitingRemoteRevokeToAnnounce(Readable::read(reader)?),
6019 2 => InboundHTLCState::AwaitingAnnouncedRemoteRevoke(Readable::read(reader)?),
6020 3 => InboundHTLCState::Committed,
6021 4 => InboundHTLCState::LocalRemoved(Readable::read(reader)?),
6022 _ => return Err(DecodeError::InvalidValue),
6027 let pending_outbound_htlc_count: u64 = Readable::read(reader)?;
6028 let mut pending_outbound_htlcs = Vec::with_capacity(cmp::min(pending_outbound_htlc_count as usize, OUR_MAX_HTLCS as usize));
6029 for _ in 0..pending_outbound_htlc_count {
6030 pending_outbound_htlcs.push(OutboundHTLCOutput {
6031 htlc_id: Readable::read(reader)?,
6032 amount_msat: Readable::read(reader)?,
6033 cltv_expiry: Readable::read(reader)?,
6034 payment_hash: Readable::read(reader)?,
6035 source: Readable::read(reader)?,
6036 state: match <u8 as Readable>::read(reader)? {
6037 0 => OutboundHTLCState::LocalAnnounced(Box::new(Readable::read(reader)?)),
6038 1 => OutboundHTLCState::Committed,
6040 let option: Option<HTLCFailReason> = Readable::read(reader)?;
6041 OutboundHTLCState::RemoteRemoved(option.into())
6044 let option: Option<HTLCFailReason> = Readable::read(reader)?;
6045 OutboundHTLCState::AwaitingRemoteRevokeToRemove(option.into())
6048 let option: Option<HTLCFailReason> = Readable::read(reader)?;
6049 OutboundHTLCState::AwaitingRemovedRemoteRevoke(option.into())
6051 _ => return Err(DecodeError::InvalidValue),
6056 let holding_cell_htlc_update_count: u64 = Readable::read(reader)?;
6057 let mut holding_cell_htlc_updates = Vec::with_capacity(cmp::min(holding_cell_htlc_update_count as usize, OUR_MAX_HTLCS as usize*2));
6058 for _ in 0..holding_cell_htlc_update_count {
6059 holding_cell_htlc_updates.push(match <u8 as Readable>::read(reader)? {
6060 0 => HTLCUpdateAwaitingACK::AddHTLC {
6061 amount_msat: Readable::read(reader)?,
6062 cltv_expiry: Readable::read(reader)?,
6063 payment_hash: Readable::read(reader)?,
6064 source: Readable::read(reader)?,
6065 onion_routing_packet: Readable::read(reader)?,
6067 1 => HTLCUpdateAwaitingACK::ClaimHTLC {
6068 payment_preimage: Readable::read(reader)?,
6069 htlc_id: Readable::read(reader)?,
6071 2 => HTLCUpdateAwaitingACK::FailHTLC {
6072 htlc_id: Readable::read(reader)?,
6073 err_packet: Readable::read(reader)?,
6075 _ => return Err(DecodeError::InvalidValue),
6079 let resend_order = match <u8 as Readable>::read(reader)? {
6080 0 => RAACommitmentOrder::CommitmentFirst,
6081 1 => RAACommitmentOrder::RevokeAndACKFirst,
6082 _ => return Err(DecodeError::InvalidValue),
6085 let monitor_pending_funding_locked = Readable::read(reader)?;
6086 let monitor_pending_revoke_and_ack = Readable::read(reader)?;
6087 let monitor_pending_commitment_signed = Readable::read(reader)?;
6089 let monitor_pending_forwards_count: u64 = Readable::read(reader)?;
6090 let mut monitor_pending_forwards = Vec::with_capacity(cmp::min(monitor_pending_forwards_count as usize, OUR_MAX_HTLCS as usize));
6091 for _ in 0..monitor_pending_forwards_count {
6092 monitor_pending_forwards.push((Readable::read(reader)?, Readable::read(reader)?));
6095 let monitor_pending_failures_count: u64 = Readable::read(reader)?;
6096 let mut monitor_pending_failures = Vec::with_capacity(cmp::min(monitor_pending_failures_count as usize, OUR_MAX_HTLCS as usize));
6097 for _ in 0..monitor_pending_failures_count {
6098 monitor_pending_failures.push((Readable::read(reader)?, Readable::read(reader)?, Readable::read(reader)?));
6101 let pending_update_fee_value: Option<u32> = Readable::read(reader)?;
6103 let holding_cell_update_fee = Readable::read(reader)?;
6105 let next_holder_htlc_id = Readable::read(reader)?;
6106 let next_counterparty_htlc_id = Readable::read(reader)?;
6107 let update_time_counter = Readable::read(reader)?;
6108 let feerate_per_kw = Readable::read(reader)?;
6110 // Versions prior to 0.0.100 expected to read the fields of `last_sent_closing_fee` here,
6111 // however we are supposed to restart shutdown fee negotiation on reconnect (and wipe
6112 // `last_send_closing_fee` in `remove_uncommitted_htlcs_and_mark_paused`) so we should never
6113 // consider the stale state on reload.
6114 match <u8 as Readable>::read(reader)? {
6117 let _: u32 = Readable::read(reader)?;
6118 let _: u64 = Readable::read(reader)?;
6119 let _: Signature = Readable::read(reader)?;
6121 _ => return Err(DecodeError::InvalidValue),
6124 let funding_tx_confirmed_in = Readable::read(reader)?;
6125 let funding_tx_confirmation_height = Readable::read(reader)?;
6126 let short_channel_id = Readable::read(reader)?;
6128 let counterparty_dust_limit_satoshis = Readable::read(reader)?;
6129 let holder_dust_limit_satoshis = Readable::read(reader)?;
6130 let counterparty_max_htlc_value_in_flight_msat = Readable::read(reader)?;
6131 let mut counterparty_selected_channel_reserve_satoshis = None;
6133 // Read the old serialization from version 0.0.98.
6134 counterparty_selected_channel_reserve_satoshis = Some(Readable::read(reader)?);
6136 // Read the 8 bytes of backwards-compatibility data.
6137 let _dummy: u64 = Readable::read(reader)?;
6139 let counterparty_htlc_minimum_msat = Readable::read(reader)?;
6140 let holder_htlc_minimum_msat = Readable::read(reader)?;
6141 let counterparty_max_accepted_htlcs = Readable::read(reader)?;
6143 let mut minimum_depth = None;
6145 // Read the old serialization from version 0.0.98.
6146 minimum_depth = Some(Readable::read(reader)?);
6148 // Read the 4 bytes of backwards-compatibility data.
6149 let _dummy: u32 = Readable::read(reader)?;
6152 let counterparty_forwarding_info = match <u8 as Readable>::read(reader)? {
6154 1 => Some(CounterpartyForwardingInfo {
6155 fee_base_msat: Readable::read(reader)?,
6156 fee_proportional_millionths: Readable::read(reader)?,
6157 cltv_expiry_delta: Readable::read(reader)?,
6159 _ => return Err(DecodeError::InvalidValue),
6162 let channel_parameters: ChannelTransactionParameters = Readable::read(reader)?;
6163 let funding_transaction = Readable::read(reader)?;
6165 let counterparty_cur_commitment_point = Readable::read(reader)?;
6167 let counterparty_prev_commitment_point = Readable::read(reader)?;
6168 let counterparty_node_id = Readable::read(reader)?;
6170 let counterparty_shutdown_scriptpubkey = Readable::read(reader)?;
6171 let commitment_secrets = Readable::read(reader)?;
6173 let channel_update_status = Readable::read(reader)?;
6175 #[cfg(any(test, fuzzing))]
6176 let mut historical_inbound_htlc_fulfills = HashSet::new();
6177 #[cfg(any(test, fuzzing))]
6179 let htlc_fulfills_len: u64 = Readable::read(reader)?;
6180 for _ in 0..htlc_fulfills_len {
6181 assert!(historical_inbound_htlc_fulfills.insert(Readable::read(reader)?));
6185 let pending_update_fee = if let Some(feerate) = pending_update_fee_value {
6186 Some((feerate, if channel_parameters.is_outbound_from_holder {
6187 FeeUpdateState::Outbound
6189 FeeUpdateState::AwaitingRemoteRevokeToAnnounce
6195 let mut announcement_sigs = None;
6196 let mut target_closing_feerate_sats_per_kw = None;
6197 let mut monitor_pending_finalized_fulfills = Some(Vec::new());
6198 let mut holder_selected_channel_reserve_satoshis = Some(Self::get_holder_selected_channel_reserve_satoshis(channel_value_satoshis));
6199 let mut holder_max_htlc_value_in_flight_msat = Some(Self::get_holder_max_htlc_value_in_flight_msat(channel_value_satoshis, &UserConfig::default().own_channel_config));
6200 // Prior to supporting channel type negotiation, all of our channels were static_remotekey
6201 // only, so we default to that if none was written.
6202 let mut channel_type = Some(ChannelTypeFeatures::only_static_remote_key());
6203 let mut channel_creation_height = Some(serialized_height);
6204 let mut preimages_opt: Option<Vec<Option<PaymentPreimage>>> = None;
6206 // If we read an old Channel, for simplicity we just treat it as "we never sent an
6207 // AnnouncementSignatures" which implies we'll re-send it on reconnect, but that's fine.
6208 let mut announcement_sigs_state = Some(AnnouncementSigsState::NotSent);
6209 let mut latest_inbound_scid_alias = None;
6210 let mut outbound_scid_alias = None;
6212 read_tlv_fields!(reader, {
6213 (0, announcement_sigs, option),
6214 (1, minimum_depth, option),
6215 (2, channel_type, option),
6216 (3, counterparty_selected_channel_reserve_satoshis, option),
6217 (4, holder_selected_channel_reserve_satoshis, option),
6218 (5, config, option), // Note that if none is provided we will *not* overwrite the existing one.
6219 (6, holder_max_htlc_value_in_flight_msat, option),
6220 (7, shutdown_scriptpubkey, option),
6221 (9, target_closing_feerate_sats_per_kw, option),
6222 (11, monitor_pending_finalized_fulfills, vec_type),
6223 (13, channel_creation_height, option),
6224 (15, preimages_opt, vec_type),
6225 (17, announcement_sigs_state, option),
6226 (19, latest_inbound_scid_alias, option),
6227 (21, outbound_scid_alias, option),
6230 if let Some(preimages) = preimages_opt {
6231 let mut iter = preimages.into_iter();
6232 for htlc in pending_outbound_htlcs.iter_mut() {
6234 OutboundHTLCState::AwaitingRemoteRevokeToRemove(OutboundHTLCOutcome::Success(None)) => {
6235 htlc.state = OutboundHTLCState::AwaitingRemoteRevokeToRemove(OutboundHTLCOutcome::Success(iter.next().ok_or(DecodeError::InvalidValue)?));
6237 OutboundHTLCState::AwaitingRemovedRemoteRevoke(OutboundHTLCOutcome::Success(None)) => {
6238 htlc.state = OutboundHTLCState::AwaitingRemovedRemoteRevoke(OutboundHTLCOutcome::Success(iter.next().ok_or(DecodeError::InvalidValue)?));
6243 // We expect all preimages to be consumed above
6244 if iter.next().is_some() {
6245 return Err(DecodeError::InvalidValue);
6249 let chan_features = channel_type.as_ref().unwrap();
6250 if chan_features.supports_unknown_bits() || chan_features.requires_unknown_bits() {
6251 // If the channel was written by a new version and negotiated with features we don't
6252 // understand yet, refuse to read it.
6253 return Err(DecodeError::UnknownRequiredFeature);
6256 if channel_parameters.opt_anchors.is_some() {
6257 // Relax this check when ChannelTypeFeatures supports anchors.
6258 return Err(DecodeError::InvalidValue);
6261 let mut secp_ctx = Secp256k1::new();
6262 secp_ctx.seeded_randomize(&keys_source.get_secure_random_bytes());
6267 config: config.unwrap(),
6269 // Note that we don't care about serializing handshake limits as we only ever serialize
6270 // channel data after the handshake has completed.
6271 inbound_handshake_limits_override: None,
6275 announcement_sigs_state: announcement_sigs_state.unwrap(),
6277 channel_value_satoshis,
6279 latest_monitor_update_id,
6282 shutdown_scriptpubkey,
6285 cur_holder_commitment_transaction_number,
6286 cur_counterparty_commitment_transaction_number,
6289 pending_inbound_htlcs,
6290 pending_outbound_htlcs,
6291 holding_cell_htlc_updates,
6295 monitor_pending_funding_locked,
6296 monitor_pending_revoke_and_ack,
6297 monitor_pending_commitment_signed,
6298 monitor_pending_forwards,
6299 monitor_pending_failures,
6300 monitor_pending_finalized_fulfills: monitor_pending_finalized_fulfills.unwrap(),
6303 holding_cell_update_fee,
6304 next_holder_htlc_id,
6305 next_counterparty_htlc_id,
6306 update_time_counter,
6309 #[cfg(debug_assertions)]
6310 holder_max_commitment_tx_output: Mutex::new((0, 0)),
6311 #[cfg(debug_assertions)]
6312 counterparty_max_commitment_tx_output: Mutex::new((0, 0)),
6314 last_sent_closing_fee: None,
6315 pending_counterparty_closing_signed: None,
6316 closing_fee_limits: None,
6317 target_closing_feerate_sats_per_kw,
6319 inbound_awaiting_accept: false,
6321 funding_tx_confirmed_in,
6322 funding_tx_confirmation_height,
6324 channel_creation_height: channel_creation_height.unwrap(),
6326 counterparty_dust_limit_satoshis,
6327 holder_dust_limit_satoshis,
6328 counterparty_max_htlc_value_in_flight_msat,
6329 holder_max_htlc_value_in_flight_msat: holder_max_htlc_value_in_flight_msat.unwrap(),
6330 counterparty_selected_channel_reserve_satoshis,
6331 holder_selected_channel_reserve_satoshis: holder_selected_channel_reserve_satoshis.unwrap(),
6332 counterparty_htlc_minimum_msat,
6333 holder_htlc_minimum_msat,
6334 counterparty_max_accepted_htlcs,
6337 counterparty_forwarding_info,
6339 channel_transaction_parameters: channel_parameters,
6340 funding_transaction,
6342 counterparty_cur_commitment_point,
6343 counterparty_prev_commitment_point,
6344 counterparty_node_id,
6346 counterparty_shutdown_scriptpubkey,
6350 channel_update_status,
6351 closing_signed_in_flight: false,
6355 #[cfg(any(test, fuzzing))]
6356 next_local_commitment_tx_fee_info_cached: Mutex::new(None),
6357 #[cfg(any(test, fuzzing))]
6358 next_remote_commitment_tx_fee_info_cached: Mutex::new(None),
6360 workaround_lnd_bug_4006: None,
6362 latest_inbound_scid_alias,
6363 // Later in the ChannelManager deserialization phase we scan for channels and assign scid aliases if its missing
6364 outbound_scid_alias: outbound_scid_alias.unwrap_or(0),
6366 #[cfg(any(test, fuzzing))]
6367 historical_inbound_htlc_fulfills,
6369 channel_type: channel_type.unwrap(),
6376 use bitcoin::blockdata::script::{Script, Builder};
6377 use bitcoin::blockdata::transaction::{Transaction, TxOut};
6378 use bitcoin::blockdata::constants::genesis_block;
6379 use bitcoin::blockdata::opcodes;
6380 use bitcoin::network::constants::Network;
6382 use ln::PaymentHash;
6383 use ln::channelmanager::{HTLCSource, PaymentId};
6384 use ln::channel::{Channel, InboundHTLCOutput, OutboundHTLCOutput, InboundHTLCState, OutboundHTLCState, HTLCCandidate, HTLCInitiator};
6385 use ln::channel::{MAX_FUNDING_SATOSHIS_NO_WUMBO, TOTAL_BITCOIN_SUPPLY_SATOSHIS};
6386 use ln::features::InitFeatures;
6387 use ln::msgs::{ChannelUpdate, DataLossProtect, DecodeError, OptionalField, UnsignedChannelUpdate};
6388 use ln::script::ShutdownScript;
6390 use ln::chan_utils::{htlc_success_tx_weight, htlc_timeout_tx_weight};
6391 use chain::BestBlock;
6392 use chain::chaininterface::{FeeEstimator,ConfirmationTarget};
6393 use chain::keysinterface::{InMemorySigner, Recipient, KeyMaterial, KeysInterface};
6394 use chain::transaction::OutPoint;
6395 use util::config::UserConfig;
6396 use util::enforcing_trait_impls::EnforcingSigner;
6397 use util::errors::APIError;
6398 use util::test_utils;
6399 use util::test_utils::OnGetShutdownScriptpubkey;
6400 use bitcoin::secp256k1::{Secp256k1, ecdsa::Signature};
6401 use bitcoin::secp256k1::ffi::Signature as FFISignature;
6402 use bitcoin::secp256k1::{SecretKey,PublicKey};
6403 use bitcoin::secp256k1::ecdsa::RecoverableSignature;
6404 use bitcoin::hashes::sha256::Hash as Sha256;
6405 use bitcoin::hashes::Hash;
6406 use bitcoin::hash_types::WPubkeyHash;
6407 use bitcoin::bech32::u5;
6408 use bitcoin::util::address::WitnessVersion;
6411 struct TestFeeEstimator {
6414 impl FeeEstimator for TestFeeEstimator {
6415 fn get_est_sat_per_1000_weight(&self, _: ConfirmationTarget) -> u32 {
6421 fn test_max_funding_satoshis_no_wumbo() {
6422 assert_eq!(TOTAL_BITCOIN_SUPPLY_SATOSHIS, 21_000_000 * 100_000_000);
6423 assert!(MAX_FUNDING_SATOSHIS_NO_WUMBO <= TOTAL_BITCOIN_SUPPLY_SATOSHIS,
6424 "MAX_FUNDING_SATOSHIS_NO_WUMBO is greater than all satoshis in existence");
6428 fn test_no_fee_check_overflow() {
6429 // Previously, calling `check_remote_fee` with a fee of 0xffffffff would overflow in
6430 // arithmetic, causing a panic with debug assertions enabled.
6431 assert!(Channel::<InMemorySigner>::check_remote_fee(&&TestFeeEstimator { fee_est: 42 }, u32::max_value()).is_err());
6435 signer: InMemorySigner,
6437 impl KeysInterface for Keys {
6438 type Signer = InMemorySigner;
6440 fn get_node_secret(&self, _recipient: Recipient) -> Result<SecretKey, ()> { panic!(); }
6441 fn get_inbound_payment_key_material(&self) -> KeyMaterial { panic!(); }
6442 fn get_destination_script(&self) -> Script {
6443 let secp_ctx = Secp256k1::signing_only();
6444 let channel_monitor_claim_key = SecretKey::from_slice(&hex::decode("0fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff").unwrap()[..]).unwrap();
6445 let channel_monitor_claim_key_hash = WPubkeyHash::hash(&PublicKey::from_secret_key(&secp_ctx, &channel_monitor_claim_key).serialize());
6446 Builder::new().push_opcode(opcodes::all::OP_PUSHBYTES_0).push_slice(&channel_monitor_claim_key_hash[..]).into_script()
6449 fn get_shutdown_scriptpubkey(&self) -> ShutdownScript {
6450 let secp_ctx = Secp256k1::signing_only();
6451 let channel_close_key = SecretKey::from_slice(&hex::decode("0fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff").unwrap()[..]).unwrap();
6452 ShutdownScript::new_p2wpkh_from_pubkey(PublicKey::from_secret_key(&secp_ctx, &channel_close_key))
6455 fn get_channel_signer(&self, _inbound: bool, _channel_value_satoshis: u64) -> InMemorySigner {
6458 fn get_secure_random_bytes(&self) -> [u8; 32] { [0; 32] }
6459 fn read_chan_signer(&self, _data: &[u8]) -> Result<Self::Signer, DecodeError> { panic!(); }
6460 fn sign_invoice(&self, _hrp_bytes: &[u8], _invoice_data: &[u5], _recipient: Recipient) -> Result<RecoverableSignature, ()> { panic!(); }
6463 #[cfg(not(feature = "grind_signatures"))]
6464 fn public_from_secret_hex(secp_ctx: &Secp256k1<bitcoin::secp256k1::All>, hex: &str) -> PublicKey {
6465 PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&hex::decode(hex).unwrap()[..]).unwrap())
6469 fn upfront_shutdown_script_incompatibility() {
6470 let features = InitFeatures::known().clear_shutdown_anysegwit();
6471 let non_v0_segwit_shutdown_script =
6472 ShutdownScript::new_witness_program(WitnessVersion::V16, &[0, 40]).unwrap();
6474 let seed = [42; 32];
6475 let network = Network::Testnet;
6476 let keys_provider = test_utils::TestKeysInterface::new(&seed, network);
6477 keys_provider.expect(OnGetShutdownScriptpubkey {
6478 returns: non_v0_segwit_shutdown_script.clone(),
6481 let fee_estimator = TestFeeEstimator { fee_est: 253 };
6482 let secp_ctx = Secp256k1::new();
6483 let node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32]).unwrap());
6484 let config = UserConfig::default();
6485 match Channel::<EnforcingSigner>::new_outbound(&&fee_estimator, &&keys_provider, node_id, &features, 10000000, 100000, 42, &config, 0, 42) {
6486 Err(APIError::IncompatibleShutdownScript { script }) => {
6487 assert_eq!(script.into_inner(), non_v0_segwit_shutdown_script.into_inner());
6489 Err(e) => panic!("Unexpected error: {:?}", e),
6490 Ok(_) => panic!("Expected error"),
6494 // Check that, during channel creation, we use the same feerate in the open channel message
6495 // as we do in the Channel object creation itself.
6497 fn test_open_channel_msg_fee() {
6498 let original_fee = 253;
6499 let mut fee_est = TestFeeEstimator{fee_est: original_fee };
6500 let secp_ctx = Secp256k1::new();
6501 let seed = [42; 32];
6502 let network = Network::Testnet;
6503 let keys_provider = test_utils::TestKeysInterface::new(&seed, network);
6505 let node_a_node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32]).unwrap());
6506 let config = UserConfig::default();
6507 let node_a_chan = Channel::<EnforcingSigner>::new_outbound(&&fee_est, &&keys_provider, node_a_node_id, &InitFeatures::known(), 10000000, 100000, 42, &config, 0, 42).unwrap();
6509 // Now change the fee so we can check that the fee in the open_channel message is the
6510 // same as the old fee.
6511 fee_est.fee_est = 500;
6512 let open_channel_msg = node_a_chan.get_open_channel(genesis_block(network).header.block_hash());
6513 assert_eq!(open_channel_msg.feerate_per_kw, original_fee);
6517 fn test_holder_vs_counterparty_dust_limit() {
6518 // Test that when calculating the local and remote commitment transaction fees, the correct
6519 // dust limits are used.
6520 let feeest = TestFeeEstimator{fee_est: 15000};
6521 let secp_ctx = Secp256k1::new();
6522 let seed = [42; 32];
6523 let network = Network::Testnet;
6524 let keys_provider = test_utils::TestKeysInterface::new(&seed, network);
6525 let logger = test_utils::TestLogger::new();
6527 // Go through the flow of opening a channel between two nodes, making sure
6528 // they have different dust limits.
6530 // Create Node A's channel pointing to Node B's pubkey
6531 let node_b_node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32]).unwrap());
6532 let config = UserConfig::default();
6533 let mut node_a_chan = Channel::<EnforcingSigner>::new_outbound(&&feeest, &&keys_provider, node_b_node_id, &InitFeatures::known(), 10000000, 100000, 42, &config, 0, 42).unwrap();
6535 // Create Node B's channel by receiving Node A's open_channel message
6536 // Make sure A's dust limit is as we expect.
6537 let open_channel_msg = node_a_chan.get_open_channel(genesis_block(network).header.block_hash());
6538 let node_b_node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[7; 32]).unwrap());
6539 let mut node_b_chan = Channel::<EnforcingSigner>::new_from_req(&&feeest, &&keys_provider, node_b_node_id, &InitFeatures::known(), &open_channel_msg, 7, &config, 0, &&logger, 42).unwrap();
6541 // Node B --> Node A: accept channel, explicitly setting B's dust limit.
6542 let mut accept_channel_msg = node_b_chan.accept_inbound_channel(0);
6543 accept_channel_msg.dust_limit_satoshis = 546;
6544 node_a_chan.accept_channel(&accept_channel_msg, &config.peer_channel_config_limits, &InitFeatures::known()).unwrap();
6545 node_a_chan.holder_dust_limit_satoshis = 1560;
6547 // Put some inbound and outbound HTLCs in A's channel.
6548 let htlc_amount_msat = 11_092_000; // put an amount below A's effective dust limit but above B's.
6549 node_a_chan.pending_inbound_htlcs.push(InboundHTLCOutput {
6551 amount_msat: htlc_amount_msat,
6552 payment_hash: PaymentHash(Sha256::hash(&[42; 32]).into_inner()),
6553 cltv_expiry: 300000000,
6554 state: InboundHTLCState::Committed,
6557 node_a_chan.pending_outbound_htlcs.push(OutboundHTLCOutput {
6559 amount_msat: htlc_amount_msat, // put an amount below A's dust amount but above B's.
6560 payment_hash: PaymentHash(Sha256::hash(&[43; 32]).into_inner()),
6561 cltv_expiry: 200000000,
6562 state: OutboundHTLCState::Committed,
6563 source: HTLCSource::OutboundRoute {
6565 session_priv: SecretKey::from_slice(&hex::decode("0fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff").unwrap()[..]).unwrap(),
6566 first_hop_htlc_msat: 548,
6567 payment_id: PaymentId([42; 32]),
6568 payment_secret: None,
6569 payment_params: None,
6573 // Make sure when Node A calculates their local commitment transaction, none of the HTLCs pass
6574 // the dust limit check.
6575 let htlc_candidate = HTLCCandidate::new(htlc_amount_msat, HTLCInitiator::LocalOffered);
6576 let local_commit_tx_fee = node_a_chan.next_local_commit_tx_fee_msat(htlc_candidate, None);
6577 let local_commit_fee_0_htlcs = Channel::<EnforcingSigner>::commit_tx_fee_msat(node_a_chan.feerate_per_kw, 0, node_a_chan.opt_anchors());
6578 assert_eq!(local_commit_tx_fee, local_commit_fee_0_htlcs);
6580 // Finally, make sure that when Node A calculates the remote's commitment transaction fees, all
6581 // of the HTLCs are seen to be above the dust limit.
6582 node_a_chan.channel_transaction_parameters.is_outbound_from_holder = false;
6583 let remote_commit_fee_3_htlcs = Channel::<EnforcingSigner>::commit_tx_fee_msat(node_a_chan.feerate_per_kw, 3, node_a_chan.opt_anchors());
6584 let htlc_candidate = HTLCCandidate::new(htlc_amount_msat, HTLCInitiator::LocalOffered);
6585 let remote_commit_tx_fee = node_a_chan.next_remote_commit_tx_fee_msat(htlc_candidate, None);
6586 assert_eq!(remote_commit_tx_fee, remote_commit_fee_3_htlcs);
6590 fn test_timeout_vs_success_htlc_dust_limit() {
6591 // Make sure that when `next_remote_commit_tx_fee_msat` and `next_local_commit_tx_fee_msat`
6592 // calculate the real dust limits for HTLCs (i.e. the dust limit given by the counterparty
6593 // *plus* the fees paid for the HTLC) they don't swap `HTLC_SUCCESS_TX_WEIGHT` for
6594 // `HTLC_TIMEOUT_TX_WEIGHT`, and vice versa.
6595 let fee_est = TestFeeEstimator{fee_est: 253 };
6596 let secp_ctx = Secp256k1::new();
6597 let seed = [42; 32];
6598 let network = Network::Testnet;
6599 let keys_provider = test_utils::TestKeysInterface::new(&seed, network);
6601 let node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32]).unwrap());
6602 let config = UserConfig::default();
6603 let mut chan = Channel::<EnforcingSigner>::new_outbound(&&fee_est, &&keys_provider, node_id, &InitFeatures::known(), 10000000, 100000, 42, &config, 0, 42).unwrap();
6605 let commitment_tx_fee_0_htlcs = Channel::<EnforcingSigner>::commit_tx_fee_msat(chan.feerate_per_kw, 0, chan.opt_anchors());
6606 let commitment_tx_fee_1_htlc = Channel::<EnforcingSigner>::commit_tx_fee_msat(chan.feerate_per_kw, 1, chan.opt_anchors());
6608 // If HTLC_SUCCESS_TX_WEIGHT and HTLC_TIMEOUT_TX_WEIGHT were swapped: then this HTLC would be
6609 // counted as dust when it shouldn't be.
6610 let htlc_amt_above_timeout = ((253 * htlc_timeout_tx_weight(chan.opt_anchors()) / 1000) + chan.holder_dust_limit_satoshis + 1) * 1000;
6611 let htlc_candidate = HTLCCandidate::new(htlc_amt_above_timeout, HTLCInitiator::LocalOffered);
6612 let commitment_tx_fee = chan.next_local_commit_tx_fee_msat(htlc_candidate, None);
6613 assert_eq!(commitment_tx_fee, commitment_tx_fee_1_htlc);
6615 // If swapped: this HTLC would be counted as non-dust when it shouldn't be.
6616 let dust_htlc_amt_below_success = ((253 * htlc_success_tx_weight(chan.opt_anchors()) / 1000) + chan.holder_dust_limit_satoshis - 1) * 1000;
6617 let htlc_candidate = HTLCCandidate::new(dust_htlc_amt_below_success, HTLCInitiator::RemoteOffered);
6618 let commitment_tx_fee = chan.next_local_commit_tx_fee_msat(htlc_candidate, None);
6619 assert_eq!(commitment_tx_fee, commitment_tx_fee_0_htlcs);
6621 chan.channel_transaction_parameters.is_outbound_from_holder = false;
6623 // If swapped: this HTLC would be counted as non-dust when it shouldn't be.
6624 let dust_htlc_amt_above_timeout = ((253 * htlc_timeout_tx_weight(chan.opt_anchors()) / 1000) + chan.counterparty_dust_limit_satoshis + 1) * 1000;
6625 let htlc_candidate = HTLCCandidate::new(dust_htlc_amt_above_timeout, HTLCInitiator::LocalOffered);
6626 let commitment_tx_fee = chan.next_remote_commit_tx_fee_msat(htlc_candidate, None);
6627 assert_eq!(commitment_tx_fee, commitment_tx_fee_0_htlcs);
6629 // If swapped: this HTLC would be counted as dust when it shouldn't be.
6630 let htlc_amt_below_success = ((253 * htlc_success_tx_weight(chan.opt_anchors()) / 1000) + chan.counterparty_dust_limit_satoshis - 1) * 1000;
6631 let htlc_candidate = HTLCCandidate::new(htlc_amt_below_success, HTLCInitiator::RemoteOffered);
6632 let commitment_tx_fee = chan.next_remote_commit_tx_fee_msat(htlc_candidate, None);
6633 assert_eq!(commitment_tx_fee, commitment_tx_fee_1_htlc);
6637 fn channel_reestablish_no_updates() {
6638 let feeest = TestFeeEstimator{fee_est: 15000};
6639 let logger = test_utils::TestLogger::new();
6640 let secp_ctx = Secp256k1::new();
6641 let seed = [42; 32];
6642 let network = Network::Testnet;
6643 let best_block = BestBlock::from_genesis(network);
6644 let chain_hash = best_block.block_hash();
6645 let keys_provider = test_utils::TestKeysInterface::new(&seed, network);
6647 // Go through the flow of opening a channel between two nodes.
6649 // Create Node A's channel pointing to Node B's pubkey
6650 let node_b_node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32]).unwrap());
6651 let config = UserConfig::default();
6652 let mut node_a_chan = Channel::<EnforcingSigner>::new_outbound(&&feeest, &&keys_provider, node_b_node_id, &InitFeatures::known(), 10000000, 100000, 42, &config, 0, 42).unwrap();
6654 // Create Node B's channel by receiving Node A's open_channel message
6655 let open_channel_msg = node_a_chan.get_open_channel(chain_hash);
6656 let node_b_node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[7; 32]).unwrap());
6657 let mut node_b_chan = Channel::<EnforcingSigner>::new_from_req(&&feeest, &&keys_provider, node_b_node_id, &InitFeatures::known(), &open_channel_msg, 7, &config, 0, &&logger, 42).unwrap();
6659 // Node B --> Node A: accept channel
6660 let accept_channel_msg = node_b_chan.accept_inbound_channel(0);
6661 node_a_chan.accept_channel(&accept_channel_msg, &config.peer_channel_config_limits, &InitFeatures::known()).unwrap();
6663 // Node A --> Node B: funding created
6664 let output_script = node_a_chan.get_funding_redeemscript();
6665 let tx = Transaction { version: 1, lock_time: 0, input: Vec::new(), output: vec![TxOut {
6666 value: 10000000, script_pubkey: output_script.clone(),
6668 let funding_outpoint = OutPoint{ txid: tx.txid(), index: 0 };
6669 let funding_created_msg = node_a_chan.get_outbound_funding_created(tx.clone(), funding_outpoint, &&logger).unwrap();
6670 let (funding_signed_msg, _) = node_b_chan.funding_created(&funding_created_msg, best_block, &&logger).unwrap();
6672 // Node B --> Node A: funding signed
6673 let _ = node_a_chan.funding_signed(&funding_signed_msg, best_block, &&logger);
6675 // Now disconnect the two nodes and check that the commitment point in
6676 // Node B's channel_reestablish message is sane.
6677 node_b_chan.remove_uncommitted_htlcs_and_mark_paused(&&logger);
6678 let msg = node_b_chan.get_channel_reestablish(&&logger);
6679 assert_eq!(msg.next_local_commitment_number, 1); // now called next_commitment_number
6680 assert_eq!(msg.next_remote_commitment_number, 0); // now called next_revocation_number
6681 match msg.data_loss_protect {
6682 OptionalField::Present(DataLossProtect { your_last_per_commitment_secret, .. }) => {
6683 assert_eq!(your_last_per_commitment_secret, [0; 32]);
6688 // Check that the commitment point in Node A's channel_reestablish message
6690 node_a_chan.remove_uncommitted_htlcs_and_mark_paused(&&logger);
6691 let msg = node_a_chan.get_channel_reestablish(&&logger);
6692 assert_eq!(msg.next_local_commitment_number, 1); // now called next_commitment_number
6693 assert_eq!(msg.next_remote_commitment_number, 0); // now called next_revocation_number
6694 match msg.data_loss_protect {
6695 OptionalField::Present(DataLossProtect { your_last_per_commitment_secret, .. }) => {
6696 assert_eq!(your_last_per_commitment_secret, [0; 32]);
6703 fn test_configured_holder_max_htlc_value_in_flight() {
6704 let feeest = TestFeeEstimator{fee_est: 15000};
6705 let logger = test_utils::TestLogger::new();
6706 let secp_ctx = Secp256k1::new();
6707 let seed = [42; 32];
6708 let network = Network::Testnet;
6709 let keys_provider = test_utils::TestKeysInterface::new(&seed, network);
6710 let outbound_node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32]).unwrap());
6711 let inbound_node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[7; 32]).unwrap());
6713 let mut config_2_percent = UserConfig::default();
6714 config_2_percent.own_channel_config.max_inbound_htlc_value_in_flight_percent_of_channel = 2;
6715 let mut config_99_percent = UserConfig::default();
6716 config_99_percent.own_channel_config.max_inbound_htlc_value_in_flight_percent_of_channel = 99;
6717 let mut config_0_percent = UserConfig::default();
6718 config_0_percent.own_channel_config.max_inbound_htlc_value_in_flight_percent_of_channel = 0;
6719 let mut config_101_percent = UserConfig::default();
6720 config_101_percent.own_channel_config.max_inbound_htlc_value_in_flight_percent_of_channel = 101;
6722 // Test that `new_outbound` creates a channel with the correct value for
6723 // `holder_max_htlc_value_in_flight_msat`, when configured with a valid percentage value,
6724 // which is set to the lower bound + 1 (2%) of the `channel_value`.
6725 let chan_1 = Channel::<EnforcingSigner>::new_outbound(&&feeest, &&keys_provider, outbound_node_id, &InitFeatures::known(), 10000000, 100000, 42, &config_2_percent, 0, 42).unwrap();
6726 let chan_1_value_msat = chan_1.channel_value_satoshis * 1000;
6727 assert_eq!(chan_1.holder_max_htlc_value_in_flight_msat, (chan_1_value_msat as f64 * 0.02) as u64);
6729 // Test with the upper bound - 1 of valid values (99%).
6730 let chan_2 = Channel::<EnforcingSigner>::new_outbound(&&feeest, &&keys_provider, outbound_node_id, &InitFeatures::known(), 10000000, 100000, 42, &config_99_percent, 0, 42).unwrap();
6731 let chan_2_value_msat = chan_2.channel_value_satoshis * 1000;
6732 assert_eq!(chan_2.holder_max_htlc_value_in_flight_msat, (chan_2_value_msat as f64 * 0.99) as u64);
6734 let chan_1_open_channel_msg = chan_1.get_open_channel(genesis_block(network).header.block_hash());
6736 // Test that `new_from_req` creates a channel with the correct value for
6737 // `holder_max_htlc_value_in_flight_msat`, when configured with a valid percentage value,
6738 // which is set to the lower bound - 1 (2%) of the `channel_value`.
6739 let chan_3 = Channel::<EnforcingSigner>::new_from_req(&&feeest, &&keys_provider, inbound_node_id, &InitFeatures::known(), &chan_1_open_channel_msg, 7, &config_2_percent, 0, &&logger, 42).unwrap();
6740 let chan_3_value_msat = chan_3.channel_value_satoshis * 1000;
6741 assert_eq!(chan_3.holder_max_htlc_value_in_flight_msat, (chan_3_value_msat as f64 * 0.02) as u64);
6743 // Test with the upper bound - 1 of valid values (99%).
6744 let chan_4 = Channel::<EnforcingSigner>::new_from_req(&&feeest, &&keys_provider, inbound_node_id, &InitFeatures::known(), &chan_1_open_channel_msg, 7, &config_99_percent, 0, &&logger, 42).unwrap();
6745 let chan_4_value_msat = chan_4.channel_value_satoshis * 1000;
6746 assert_eq!(chan_4.holder_max_htlc_value_in_flight_msat, (chan_4_value_msat as f64 * 0.99) as u64);
6748 // Test that `new_outbound` uses the lower bound of the configurable percentage values (1%)
6749 // if `max_inbound_htlc_value_in_flight_percent_of_channel` is set to a value less than 1.
6750 let chan_5 = Channel::<EnforcingSigner>::new_outbound(&&feeest, &&keys_provider, outbound_node_id, &InitFeatures::known(), 10000000, 100000, 42, &config_0_percent, 0, 42).unwrap();
6751 let chan_5_value_msat = chan_5.channel_value_satoshis * 1000;
6752 assert_eq!(chan_5.holder_max_htlc_value_in_flight_msat, (chan_5_value_msat as f64 * 0.01) as u64);
6754 // Test that `new_outbound` uses the upper bound of the configurable percentage values
6755 // (100%) if `max_inbound_htlc_value_in_flight_percent_of_channel` is set to a larger value
6757 let chan_6 = Channel::<EnforcingSigner>::new_outbound(&&feeest, &&keys_provider, outbound_node_id, &InitFeatures::known(), 10000000, 100000, 42, &config_101_percent, 0, 42).unwrap();
6758 let chan_6_value_msat = chan_6.channel_value_satoshis * 1000;
6759 assert_eq!(chan_6.holder_max_htlc_value_in_flight_msat, chan_6_value_msat);
6761 // Test that `new_from_req` uses the lower bound of the configurable percentage values (1%)
6762 // if `max_inbound_htlc_value_in_flight_percent_of_channel` is set to a value less than 1.
6763 let chan_7 = Channel::<EnforcingSigner>::new_from_req(&&feeest, &&keys_provider, inbound_node_id, &InitFeatures::known(), &chan_1_open_channel_msg, 7, &config_0_percent, 0, &&logger, 42).unwrap();
6764 let chan_7_value_msat = chan_7.channel_value_satoshis * 1000;
6765 assert_eq!(chan_7.holder_max_htlc_value_in_flight_msat, (chan_7_value_msat as f64 * 0.01) as u64);
6767 // Test that `new_from_req` uses the upper bound of the configurable percentage values
6768 // (100%) if `max_inbound_htlc_value_in_flight_percent_of_channel` is set to a larger value
6770 let chan_8 = Channel::<EnforcingSigner>::new_from_req(&&feeest, &&keys_provider, inbound_node_id, &InitFeatures::known(), &chan_1_open_channel_msg, 7, &config_101_percent, 0, &&logger, 42).unwrap();
6771 let chan_8_value_msat = chan_8.channel_value_satoshis * 1000;
6772 assert_eq!(chan_8.holder_max_htlc_value_in_flight_msat, chan_8_value_msat);
6776 fn channel_update() {
6777 let feeest = TestFeeEstimator{fee_est: 15000};
6778 let secp_ctx = Secp256k1::new();
6779 let seed = [42; 32];
6780 let network = Network::Testnet;
6781 let chain_hash = genesis_block(network).header.block_hash();
6782 let keys_provider = test_utils::TestKeysInterface::new(&seed, network);
6784 // Create a channel.
6785 let node_b_node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32]).unwrap());
6786 let config = UserConfig::default();
6787 let mut node_a_chan = Channel::<EnforcingSigner>::new_outbound(&&feeest, &&keys_provider, node_b_node_id, &InitFeatures::known(), 10000000, 100000, 42, &config, 0, 42).unwrap();
6788 assert!(node_a_chan.counterparty_forwarding_info.is_none());
6789 assert_eq!(node_a_chan.holder_htlc_minimum_msat, 1); // the default
6790 assert!(node_a_chan.counterparty_forwarding_info().is_none());
6792 // Make sure that receiving a channel update will update the Channel as expected.
6793 let update = ChannelUpdate {
6794 contents: UnsignedChannelUpdate {
6796 short_channel_id: 0,
6799 cltv_expiry_delta: 100,
6800 htlc_minimum_msat: 5,
6801 htlc_maximum_msat: OptionalField::Absent,
6803 fee_proportional_millionths: 11,
6804 excess_data: Vec::new(),
6806 signature: Signature::from(unsafe { FFISignature::new() })
6808 node_a_chan.channel_update(&update).unwrap();
6810 // The counterparty can send an update with a higher minimum HTLC, but that shouldn't
6811 // change our official htlc_minimum_msat.
6812 assert_eq!(node_a_chan.holder_htlc_minimum_msat, 1);
6813 match node_a_chan.counterparty_forwarding_info() {
6815 assert_eq!(info.cltv_expiry_delta, 100);
6816 assert_eq!(info.fee_base_msat, 110);
6817 assert_eq!(info.fee_proportional_millionths, 11);
6819 None => panic!("expected counterparty forwarding info to be Some")
6823 #[cfg(not(feature = "grind_signatures"))]
6825 fn outbound_commitment_test() {
6826 use bitcoin::util::sighash;
6827 use bitcoin::consensus::encode::serialize;
6828 use bitcoin::blockdata::transaction::EcdsaSighashType;
6829 use bitcoin::hashes::hex::FromHex;
6830 use bitcoin::hash_types::Txid;
6831 use bitcoin::secp256k1::Message;
6832 use chain::keysinterface::BaseSign;
6833 use ln::PaymentPreimage;
6834 use ln::channel::{HTLCOutputInCommitment ,TxCreationKeys};
6835 use ln::chan_utils::{ChannelPublicKeys, HolderCommitmentTransaction, CounterpartyChannelTransactionParameters};
6836 use util::logger::Logger;
6839 // Test vectors from BOLT 3 Appendices C and F (anchors):
6840 let feeest = TestFeeEstimator{fee_est: 15000};
6841 let logger : Arc<Logger> = Arc::new(test_utils::TestLogger::new());
6842 let secp_ctx = Secp256k1::new();
6844 let mut signer = InMemorySigner::new(
6846 SecretKey::from_slice(&hex::decode("4242424242424242424242424242424242424242424242424242424242424242").unwrap()[..]).unwrap(),
6847 SecretKey::from_slice(&hex::decode("30ff4956bbdd3222d44cc5e8a1261dab1e07957bdac5ae88fe3261ef321f3749").unwrap()[..]).unwrap(),
6848 SecretKey::from_slice(&hex::decode("0fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff").unwrap()[..]).unwrap(),
6849 SecretKey::from_slice(&hex::decode("1111111111111111111111111111111111111111111111111111111111111111").unwrap()[..]).unwrap(),
6850 SecretKey::from_slice(&hex::decode("3333333333333333333333333333333333333333333333333333333333333333").unwrap()[..]).unwrap(),
6851 SecretKey::from_slice(&hex::decode("1111111111111111111111111111111111111111111111111111111111111111").unwrap()[..]).unwrap(),
6853 // These aren't set in the test vectors:
6854 [0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff],
6859 assert_eq!(signer.pubkeys().funding_pubkey.serialize()[..],
6860 hex::decode("023da092f6980e58d2c037173180e9a465476026ee50f96695963e8efe436f54eb").unwrap()[..]);
6861 let keys_provider = Keys { signer: signer.clone() };
6863 let counterparty_node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32]).unwrap());
6864 let mut config = UserConfig::default();
6865 config.channel_options.announced_channel = false;
6866 let mut chan = Channel::<InMemorySigner>::new_outbound(&&feeest, &&keys_provider, counterparty_node_id, &InitFeatures::known(), 10_000_000, 100000, 42, &config, 0, 42).unwrap(); // Nothing uses their network key in this test
6867 chan.holder_dust_limit_satoshis = 546;
6868 chan.counterparty_selected_channel_reserve_satoshis = Some(0); // Filled in in accept_channel
6870 let funding_info = OutPoint{ txid: Txid::from_hex("8984484a580b825b9972d7adb15050b3ab624ccd731946b3eeddb92f4e7ef6be").unwrap(), index: 0 };
6872 let counterparty_pubkeys = ChannelPublicKeys {
6873 funding_pubkey: public_from_secret_hex(&secp_ctx, "1552dfba4f6cf29a62a0af13c8d6981d36d0ef8d61ba10fb0fe90da7634d7e13"),
6874 revocation_basepoint: PublicKey::from_slice(&hex::decode("02466d7fcae563e5cb09a0d1870bb580344804617879a14949cf22285f1bae3f27").unwrap()[..]).unwrap(),
6875 payment_point: public_from_secret_hex(&secp_ctx, "4444444444444444444444444444444444444444444444444444444444444444"),
6876 delayed_payment_basepoint: public_from_secret_hex(&secp_ctx, "1552dfba4f6cf29a62a0af13c8d6981d36d0ef8d61ba10fb0fe90da7634d7e13"),
6877 htlc_basepoint: public_from_secret_hex(&secp_ctx, "4444444444444444444444444444444444444444444444444444444444444444")
6879 chan.channel_transaction_parameters.counterparty_parameters = Some(
6880 CounterpartyChannelTransactionParameters {
6881 pubkeys: counterparty_pubkeys.clone(),
6882 selected_contest_delay: 144
6884 chan.channel_transaction_parameters.funding_outpoint = Some(funding_info);
6885 signer.ready_channel(&chan.channel_transaction_parameters);
6887 assert_eq!(counterparty_pubkeys.payment_point.serialize()[..],
6888 hex::decode("032c0b7cf95324a07d05398b240174dc0c2be444d96b159aa6c7f7b1e668680991").unwrap()[..]);
6890 assert_eq!(counterparty_pubkeys.funding_pubkey.serialize()[..],
6891 hex::decode("030e9f7b623d2ccc7c9bd44d66d5ce21ce504c0acf6385a132cec6d3c39fa711c1").unwrap()[..]);
6893 assert_eq!(counterparty_pubkeys.htlc_basepoint.serialize()[..],
6894 hex::decode("032c0b7cf95324a07d05398b240174dc0c2be444d96b159aa6c7f7b1e668680991").unwrap()[..]);
6896 // We can't just use build_holder_transaction_keys here as the per_commitment_secret is not
6897 // derived from a commitment_seed, so instead we copy it here and call
6898 // build_commitment_transaction.
6899 let delayed_payment_base = &chan.holder_signer.pubkeys().delayed_payment_basepoint;
6900 let per_commitment_secret = SecretKey::from_slice(&hex::decode("1f1e1d1c1b1a191817161514131211100f0e0d0c0b0a09080706050403020100").unwrap()[..]).unwrap();
6901 let per_commitment_point = PublicKey::from_secret_key(&secp_ctx, &per_commitment_secret);
6902 let htlc_basepoint = &chan.holder_signer.pubkeys().htlc_basepoint;
6903 let keys = TxCreationKeys::derive_new(&secp_ctx, &per_commitment_point, delayed_payment_base, htlc_basepoint, &counterparty_pubkeys.revocation_basepoint, &counterparty_pubkeys.htlc_basepoint).unwrap();
6905 macro_rules! test_commitment {
6906 ( $counterparty_sig_hex: expr, $sig_hex: expr, $tx_hex: expr, $($remain:tt)* ) => {
6907 chan.channel_transaction_parameters.opt_anchors = None;
6908 test_commitment_common!($counterparty_sig_hex, $sig_hex, $tx_hex, false, $($remain)*);
6912 macro_rules! test_commitment_with_anchors {
6913 ( $counterparty_sig_hex: expr, $sig_hex: expr, $tx_hex: expr, $($remain:tt)* ) => {
6914 chan.channel_transaction_parameters.opt_anchors = Some(());
6915 test_commitment_common!($counterparty_sig_hex, $sig_hex, $tx_hex, true, $($remain)*);
6919 macro_rules! test_commitment_common {
6920 ( $counterparty_sig_hex: expr, $sig_hex: expr, $tx_hex: expr, $opt_anchors: expr, {
6921 $( { $htlc_idx: expr, $counterparty_htlc_sig_hex: expr, $htlc_sig_hex: expr, $htlc_tx_hex: expr } ), *
6923 let (commitment_tx, htlcs): (_, Vec<HTLCOutputInCommitment>) = {
6924 let mut commitment_stats = chan.build_commitment_transaction(0xffffffffffff - 42, &keys, true, false, &logger);
6926 let htlcs = commitment_stats.htlcs_included.drain(..)
6927 .filter_map(|(htlc, _)| if htlc.transaction_output_index.is_some() { Some(htlc) } else { None })
6929 (commitment_stats.tx, htlcs)
6931 let trusted_tx = commitment_tx.trust();
6932 let unsigned_tx = trusted_tx.built_transaction();
6933 let redeemscript = chan.get_funding_redeemscript();
6934 let counterparty_signature = Signature::from_der(&hex::decode($counterparty_sig_hex).unwrap()[..]).unwrap();
6935 let sighash = unsigned_tx.get_sighash_all(&redeemscript, chan.channel_value_satoshis);
6936 log_trace!(logger, "unsigned_tx = {}", hex::encode(serialize(&unsigned_tx.transaction)));
6937 assert!(secp_ctx.verify_ecdsa(&sighash, &counterparty_signature, chan.counterparty_funding_pubkey()).is_ok(), "verify counterparty commitment sig");
6939 let mut per_htlc: Vec<(HTLCOutputInCommitment, Option<Signature>)> = Vec::new();
6940 per_htlc.clear(); // Don't warn about excess mut for no-HTLC calls
6941 let mut counterparty_htlc_sigs = Vec::new();
6942 counterparty_htlc_sigs.clear(); // Don't warn about excess mut for no-HTLC calls
6944 let remote_signature = Signature::from_der(&hex::decode($counterparty_htlc_sig_hex).unwrap()[..]).unwrap();
6945 per_htlc.push((htlcs[$htlc_idx].clone(), Some(remote_signature)));
6946 counterparty_htlc_sigs.push(remote_signature);
6948 assert_eq!(htlcs.len(), per_htlc.len());
6950 let holder_commitment_tx = HolderCommitmentTransaction::new(
6951 commitment_tx.clone(),
6952 counterparty_signature,
6953 counterparty_htlc_sigs,
6954 &chan.holder_signer.pubkeys().funding_pubkey,
6955 chan.counterparty_funding_pubkey()
6957 let (holder_sig, htlc_sigs) = signer.sign_holder_commitment_and_htlcs(&holder_commitment_tx, &secp_ctx).unwrap();
6958 assert_eq!(Signature::from_der(&hex::decode($sig_hex).unwrap()[..]).unwrap(), holder_sig, "holder_sig");
6960 let funding_redeemscript = chan.get_funding_redeemscript();
6961 let tx = holder_commitment_tx.add_holder_sig(&funding_redeemscript, holder_sig);
6962 assert_eq!(serialize(&tx)[..], hex::decode($tx_hex).unwrap()[..], "tx");
6964 // ((htlc, counterparty_sig), (index, holder_sig))
6965 let mut htlc_sig_iter = holder_commitment_tx.htlcs().iter().zip(&holder_commitment_tx.counterparty_htlc_sigs).zip(htlc_sigs.iter().enumerate());
6968 log_trace!(logger, "verifying htlc {}", $htlc_idx);
6969 let remote_signature = Signature::from_der(&hex::decode($counterparty_htlc_sig_hex).unwrap()[..]).unwrap();
6971 let ref htlc = htlcs[$htlc_idx];
6972 let htlc_tx = chan_utils::build_htlc_transaction(&unsigned_tx.txid, chan.feerate_per_kw,
6973 chan.get_counterparty_selected_contest_delay().unwrap(),
6974 &htlc, $opt_anchors, &keys.broadcaster_delayed_payment_key, &keys.revocation_key);
6975 let htlc_redeemscript = chan_utils::get_htlc_redeemscript(&htlc, $opt_anchors, &keys);
6976 let htlc_sighashtype = if $opt_anchors { EcdsaSighashType::SinglePlusAnyoneCanPay } else { EcdsaSighashType::All };
6977 let htlc_sighash = Message::from_slice(&sighash::SighashCache::new(&htlc_tx).segwit_signature_hash(0, &htlc_redeemscript, htlc.amount_msat / 1000, htlc_sighashtype).unwrap()[..]).unwrap();
6978 assert!(secp_ctx.verify_ecdsa(&htlc_sighash, &remote_signature, &keys.countersignatory_htlc_key).is_ok(), "verify counterparty htlc sig");
6980 let mut preimage: Option<PaymentPreimage> = None;
6983 let out = PaymentHash(Sha256::hash(&[i; 32]).into_inner());
6984 if out == htlc.payment_hash {
6985 preimage = Some(PaymentPreimage([i; 32]));
6989 assert!(preimage.is_some());
6992 let htlc_sig = htlc_sig_iter.next().unwrap();
6993 let num_anchors = if $opt_anchors { 2 } else { 0 };
6994 assert_eq!((htlc_sig.0).0.transaction_output_index, Some($htlc_idx + num_anchors), "output index");
6996 let signature = Signature::from_der(&hex::decode($htlc_sig_hex).unwrap()[..]).unwrap();
6997 assert_eq!(signature, *(htlc_sig.1).1, "htlc sig");
6998 let index = (htlc_sig.1).0;
6999 let channel_parameters = chan.channel_transaction_parameters.as_holder_broadcastable();
7000 let trusted_tx = holder_commitment_tx.trust();
7001 log_trace!(logger, "htlc_tx = {}", hex::encode(serialize(&trusted_tx.get_signed_htlc_tx(&channel_parameters, index, &(htlc_sig.0).1, (htlc_sig.1).1, &preimage))));
7002 assert_eq!(serialize(&trusted_tx.get_signed_htlc_tx(&channel_parameters, index, &(htlc_sig.0).1, (htlc_sig.1).1, &preimage))[..],
7003 hex::decode($htlc_tx_hex).unwrap()[..], "htlc tx");
7005 assert!(htlc_sig_iter.next().is_none());
7009 // simple commitment tx with no HTLCs
7010 chan.value_to_self_msat = 7000000000;
7012 test_commitment!("3045022100c3127b33dcc741dd6b05b1e63cbd1a9a7d816f37af9b6756fa2376b056f032370220408b96279808fe57eb7e463710804cdf4f108388bc5cf722d8c848d2c7f9f3b0",
7013 "30440220616210b2cc4d3afb601013c373bbd8aac54febd9f15400379a8cb65ce7deca60022034236c010991beb7ff770510561ae8dc885b8d38d1947248c38f2ae055647142",
7014 "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", {});
7016 // anchors: simple commitment tx with no HTLCs
7017 test_commitment_with_anchors!("3045022100f89034eba16b2be0e5581f750a0a6309192b75cce0f202f0ee2b4ec0cc394850022076c65dc507fe42276152b7a3d90e961e678adbe966e916ecfe85e64d430e75f3",
7018 "30450221008266ac6db5ea71aac3c95d97b0e172ff596844851a3216eb88382a8dddfd33d2022050e240974cfd5d708708b4365574517c18e7ae535ef732a3484d43d0d82be9f7",
7019 "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", {});
7021 chan.pending_inbound_htlcs.push({
7022 let mut out = InboundHTLCOutput{
7024 amount_msat: 1000000,
7026 payment_hash: PaymentHash([0; 32]),
7027 state: InboundHTLCState::Committed,
7029 out.payment_hash.0 = Sha256::hash(&hex::decode("0000000000000000000000000000000000000000000000000000000000000000").unwrap()).into_inner();
7032 chan.pending_inbound_htlcs.push({
7033 let mut out = InboundHTLCOutput{
7035 amount_msat: 2000000,
7037 payment_hash: PaymentHash([0; 32]),
7038 state: InboundHTLCState::Committed,
7040 out.payment_hash.0 = Sha256::hash(&hex::decode("0101010101010101010101010101010101010101010101010101010101010101").unwrap()).into_inner();
7043 chan.pending_outbound_htlcs.push({
7044 let mut out = OutboundHTLCOutput{
7046 amount_msat: 2000000,
7048 payment_hash: PaymentHash([0; 32]),
7049 state: OutboundHTLCState::Committed,
7050 source: HTLCSource::dummy(),
7052 out.payment_hash.0 = Sha256::hash(&hex::decode("0202020202020202020202020202020202020202020202020202020202020202").unwrap()).into_inner();
7055 chan.pending_outbound_htlcs.push({
7056 let mut out = OutboundHTLCOutput{
7058 amount_msat: 3000000,
7060 payment_hash: PaymentHash([0; 32]),
7061 state: OutboundHTLCState::Committed,
7062 source: HTLCSource::dummy(),
7064 out.payment_hash.0 = Sha256::hash(&hex::decode("0303030303030303030303030303030303030303030303030303030303030303").unwrap()).into_inner();
7067 chan.pending_inbound_htlcs.push({
7068 let mut out = InboundHTLCOutput{
7070 amount_msat: 4000000,
7072 payment_hash: PaymentHash([0; 32]),
7073 state: InboundHTLCState::Committed,
7075 out.payment_hash.0 = Sha256::hash(&hex::decode("0404040404040404040404040404040404040404040404040404040404040404").unwrap()).into_inner();
7079 // commitment tx with all five HTLCs untrimmed (minimum feerate)
7080 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7081 chan.feerate_per_kw = 0;
7083 test_commitment!("3044022009b048187705a8cbc9ad73adbe5af148c3d012e1f067961486c822c7af08158c022006d66f3704cfab3eb2dc49dae24e4aa22a6910fc9b424007583204e3621af2e5",
7084 "304402206fc2d1f10ea59951eefac0b4b7c396a3c3d87b71ff0b019796ef4535beaf36f902201765b0181e514d04f4c8ad75659d7037be26cdb3f8bb6f78fe61decef484c3ea",
7085 "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", {
7088 "3045022100d9e29616b8f3959f1d3d7f7ce893ffedcdc407717d0de8e37d808c91d3a7c50d022078c3033f6d00095c8720a4bc943c1b45727818c082e4e3ddbc6d3116435b624b",
7089 "30440220636de5682ef0c5b61f124ec74e8aa2461a69777521d6998295dcea36bc3338110220165285594b23c50b28b82df200234566628a27bcd17f7f14404bd865354eb3ce",
7090 "02000000000101ab84ff284f162cfbfef241f853b47d4368d171f9e2a1445160cd591c4c7d882b00000000000000000001e8030000000000002200204adb4e2f00643db396dd120d4e7dc17625f5f2c11a40d857accc862d6b7dd80e0500483045022100d9e29616b8f3959f1d3d7f7ce893ffedcdc407717d0de8e37d808c91d3a7c50d022078c3033f6d00095c8720a4bc943c1b45727818c082e4e3ddbc6d3116435b624b014730440220636de5682ef0c5b61f124ec74e8aa2461a69777521d6998295dcea36bc3338110220165285594b23c50b28b82df200234566628a27bcd17f7f14404bd865354eb3ce012000000000000000000000000000000000000000000000000000000000000000008a76a91414011f7254d96b819c76986c277d115efce6f7b58763ac67210394854aa6eab5b2a8122cc726e9dded053a2184d88256816826d6231c068d4a5b7c8201208763a914b8bcb07f6344b42ab04250c86a6e8b75d3fdbbc688527c21030d417a46946384f88d5f3337267c5e579765875dc4daca813e21734b140639e752ae677502f401b175ac686800000000" },
7093 "30440220649fe8b20e67e46cbb0d09b4acea87dbec001b39b08dee7bdd0b1f03922a8640022037c462dff79df501cecfdb12ea7f4de91f99230bb544726f6e04527b1f896004",
7094 "3045022100803159dee7935dba4a1d36a61055ce8fd62caa528573cc221ae288515405a252022029c59e7cffce374fe860100a4a63787e105c3cf5156d40b12dd53ff55ac8cf3f",
7095 "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" },
7098 "30440220770fc321e97a19f38985f2e7732dd9fe08d16a2efa4bcbc0429400a447faf49102204d40b417f3113e1b0944ae0986f517564ab4acd3d190503faf97a6e420d43352",
7099 "3045022100a437cc2ce77400ecde441b3398fea3c3ad8bdad8132be818227fe3c5b8345989022069d45e7fa0ae551ec37240845e2c561ceb2567eacf3076a6a43a502d05865faa",
7100 "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" },
7103 "304402207bcbf4f60a9829b05d2dbab84ed593e0291836be715dc7db6b72a64caf646af802201e489a5a84f7c5cc130398b841d138d031a5137ac8f4c49c770a4959dc3c1363",
7104 "304402203121d9b9c055f354304b016a36662ee99e1110d9501cb271b087ddb6f382c2c80220549882f3f3b78d9c492de47543cb9a697cecc493174726146536c5954dac7487",
7105 "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" },
7108 "3044022076dca5cb81ba7e466e349b7128cdba216d4d01659e29b96025b9524aaf0d1899022060de85697b88b21c749702b7d2cfa7dfeaa1f472c8f1d7d9c23f2bf968464b87",
7109 "3045022100d9080f103cc92bac15ec42464a95f070c7fb6925014e673ee2ea1374d36a7f7502200c65294d22eb20d48564954d5afe04a385551919d8b2ddb4ae2459daaeee1d95",
7110 "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" }
7113 // commitment tx with seven outputs untrimmed (maximum feerate)
7114 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7115 chan.feerate_per_kw = 647;
7117 test_commitment!("3045022100a135f9e8a5ed25f7277446c67956b00ce6f610ead2bdec2c2f686155b7814772022059f1f6e1a8b336a68efcc1af3fe4d422d4827332b5b067501b099c47b7b5b5ee",
7118 "30450221009ec15c687898bb4da8b3a833e5ab8bfc51ec6e9202aaa8e66611edfd4a85ed1102203d7183e45078b9735c93450bc3415d3e5a8c576141a711ec6ddcb4a893926bb7",
7119 "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", {
7122 "30450221008437627f9ad84ac67052e2a414a4367b8556fd1f94d8b02590f89f50525cd33502205b9c21ff6e7fc864f2352746ad8ba59182510819acb644e25b8a12fc37bbf24f",
7123 "30440220344b0deb055230d01703e6c7acd45853c4af2328b49b5d8af4f88a060733406602202ea64f2a43d5751edfe75503cbc35a62e3141b5ed032fa03360faf4ca66f670b",
7124 "020000000001012cfb3e4788c206881d38f2996b6cb2109b5935acb527d14bdaa7b908afa9b2fe0000000000000000000122020000000000002200204adb4e2f00643db396dd120d4e7dc17625f5f2c11a40d857accc862d6b7dd80e05004830450221008437627f9ad84ac67052e2a414a4367b8556fd1f94d8b02590f89f50525cd33502205b9c21ff6e7fc864f2352746ad8ba59182510819acb644e25b8a12fc37bbf24f014730440220344b0deb055230d01703e6c7acd45853c4af2328b49b5d8af4f88a060733406602202ea64f2a43d5751edfe75503cbc35a62e3141b5ed032fa03360faf4ca66f670b012000000000000000000000000000000000000000000000000000000000000000008a76a91414011f7254d96b819c76986c277d115efce6f7b58763ac67210394854aa6eab5b2a8122cc726e9dded053a2184d88256816826d6231c068d4a5b7c8201208763a914b8bcb07f6344b42ab04250c86a6e8b75d3fdbbc688527c21030d417a46946384f88d5f3337267c5e579765875dc4daca813e21734b140639e752ae677502f401b175ac686800000000" },
7127 "304402205a67f92bf6845cf2892b48d874ac1daf88a36495cf8a06f93d83180d930a6f75022031da1621d95c3f335cc06a3056cf960199dae600b7cf89088f65fc53cdbef28c",
7128 "30450221009e5e3822b0185c6799a95288c597b671d6cc69ab80f43740f00c6c3d0752bdda02206da947a74bd98f3175324dc56fdba86cc783703a120a6f0297537e60632f4c7f",
7129 "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" },
7132 "30440220437e21766054a3eef7f65690c5bcfa9920babbc5af92b819f772f6ea96df6c7402207173622024bd97328cfb26c6665e25c2f5d67c319443ccdc60c903217005d8c8",
7133 "3045022100fcfc47e36b712624677626cef3dc1d67f6583bd46926a6398fe6b00b0c9a37760220525788257b187fc775c6370d04eadf34d06f3650a63f8df851cee0ecb47a1673",
7134 "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" },
7137 "304402207436e10737e4df499fc051686d3e11a5bb2310e4d1f1e691d287cef66514791202207cb58e71a6b7a42dd001b7e3ae672ea4f71ea3e1cd412b742e9124abb0739c64",
7138 "3045022100e78211b8409afb7255ffe37337da87f38646f1faebbdd61bc1920d69e3ead67a02201a626305adfcd16bfb7e9340928d9b6305464eab4aa4c4a3af6646e9b9f69dee",
7139 "020000000001012cfb3e4788c206881d38f2996b6cb2109b5935acb527d14bdaa7b908afa9b2fe030000000000000000010c0a0000000000002200204adb4e2f00643db396dd120d4e7dc17625f5f2c11a40d857accc862d6b7dd80e050047304402207436e10737e4df499fc051686d3e11a5bb2310e4d1f1e691d287cef66514791202207cb58e71a6b7a42dd001b7e3ae672ea4f71ea3e1cd412b742e9124abb0739c6401483045022100e78211b8409afb7255ffe37337da87f38646f1faebbdd61bc1920d69e3ead67a02201a626305adfcd16bfb7e9340928d9b6305464eab4aa4c4a3af6646e9b9f69dee01008576a91414011f7254d96b819c76986c277d115efce6f7b58763ac67210394854aa6eab5b2a8122cc726e9dded053a2184d88256816826d6231c068d4a5b7c820120876475527c21030d417a46946384f88d5f3337267c5e579765875dc4daca813e21734b140639e752ae67a9148a486ff2e31d6158bf39e2608864d63fefd09d5b88ac6868f7010000" },
7142 "30450221009acd6a827a76bfee50806178dfe0495cd4e1d9c58279c194c7b01520fe68cb8d022024d439047c368883e570997a7d40f0b430cb5a742f507965e7d3063ae3feccca",
7143 "3044022048762cf546bbfe474f1536365ea7c416e3c0389d60558bc9412cb148fb6ab68202207215d7083b75c96ff9d2b08c59c34e287b66820f530b486a9aa4cdd9c347d5b9",
7144 "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" }
7147 // anchors: commitment tx with seven outputs untrimmed (maximum feerate)
7148 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7149 chan.feerate_per_kw = 644;
7151 test_commitment_with_anchors!("3045022100e0106830467a558c07544a3de7715610c1147062e7d091deeebe8b5c661cda9402202ad049c1a6d04834317a78483f723c205c9f638d17222aafc620800cc1b6ae35",
7152 "3045022100ef82a405364bfc4007e63a7cc82925a513d79065bdbc216d60b6a4223a323f8a02200716730b8561f3c6d362eaf47f202e99fb30d0557b61b92b5f9134f8e2de3681",
7153 "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", {
7156 "304402205912d91c58016f593d9e46fefcdb6f4125055c41a17b03101eaaa034b9028ab60220520d4d239c85c66e4c75c5b413620b62736e227659d7821b308e2b8ced3e728e",
7157 "30440220473166a5adcca68550bab80403f410a726b5bd855030527e3fefa8c1e4b4fd7b02203b1dc91d8d69039473036cb5c34398b99e8eb90ae500c22130a557b62294b188",
7158 "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" },
7161 "3045022100c6b4113678039ee1e43a6cba5e3224ed2355ffc05e365a393afe8843dc9a76860220566d01fd52d65a89ba8595023884f9e8f2e9a310a6b9b85281c0bce06863430c",
7162 "3045022100d0d86307ea55d5daa80f453ad6d64b78fe8a6504aac25407c73e8502c0702c1602206a0809a02aa00c8dc4a53d976bb05d4605d8bb0b7b26b973a5c4e2734d8afbb4",
7163 "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" },
7166 "304402203c3a699fb80a38112aafd73d6e3a9b7d40bc2c3ed8b7fbc182a20f43b215172202204e71821b984d1af52c4b8e2cd4c572578c12a965866130c2345f61e4c2d3fef4",
7167 "304402205bcfa92f83c69289a412b0b6dd4f2a0fe0b0fc2d45bd74706e963257a09ea24902203783e47883e60b86240e877fcbf33d50b1742f65bc93b3162d1be26583b367ee",
7168 "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" },
7171 "304402200f089bcd20f25475216307d32aa5b6c857419624bfba1da07335f51f6ba4645b02206ce0f7153edfba23b0d4b2afc26bb3157d404368cb8ea0ca7cf78590dcdd28cf",
7172 "3045022100e4516da08f72c7a4f7b2f37aa84a0feb54ae2cc5b73f0da378e81ae0ca8119bf02207751b2628d8e2f62b4b9abccda4866246c1bfcc82e3d416ad562fd212102c28f",
7173 "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" },
7176 "3045022100aa72cfaf0965020c73a12c77276c6411ca68c4de36ac1998adf86c917a899a43022060da0a159fecfe0bed37c3962d767f12f90e30fed8a8f34b1301775c21a2bd3a",
7177 "304402203cd12065c2a42963c762e6b1a981e17695616ecb6f9fb33d8b0717cdd7ca0ee4022065500005c491c1dcf2fe9c4024f74b1c90785d572527055a491278f901143904",
7178 "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" }
7181 // commitment tx with six outputs untrimmed (minimum feerate)
7182 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7183 chan.feerate_per_kw = 648;
7185 test_commitment!("304402203948f900a5506b8de36a4d8502f94f21dd84fd9c2314ab427d52feaa7a0a19f2022059b6a37a4adaa2c5419dc8aea63c6e2a2ec4c4bde46207f6dc1fcd22152fc6e5",
7186 "3045022100b15f72908ba3382a34ca5b32519240a22300cc6015b6f9418635fb41f3d01d8802207adb331b9ed1575383dca0f2355e86c173802feecf8298fbea53b9d4610583e9",
7187 "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", {
7190 "3045022100a031202f3be94678f0e998622ee95ebb6ada8da1e9a5110228b5e04a747351e4022010ca6a21e18314ed53cfaae3b1f51998552a61a468e596368829a50ce40110e0",
7191 "304502210097e1873b57267730154595187a34949d3744f52933070c74757005e61ce2112e02204ecfba2aa42d4f14bdf8bad4206bb97217b702e6c433e0e1b0ce6587e6d46ec6",
7192 "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" },
7195 "304402202361012a634aee7835c5ecdd6413dcffa8f404b7e77364c792cff984e4ee71e90220715c5e90baa08daa45a7439b1ee4fa4843ed77b19c058240b69406606d384124",
7196 "3044022019de73b00f1d818fb388e83b2c8c31f6bce35ac624e215bc12f88f9dc33edf48022006ff814bb9f700ee6abc3294e146fac3efd4f13f0005236b41c0a946ee00c9ae",
7197 "020000000001010f44041fdfba175987cf4e6135ba2a154e3b7fb96483dc0ed5efc0678e5b6bf10100000000000000000109060000000000002200204adb4e2f00643db396dd120d4e7dc17625f5f2c11a40d857accc862d6b7dd80e050047304402202361012a634aee7835c5ecdd6413dcffa8f404b7e77364c792cff984e4ee71e90220715c5e90baa08daa45a7439b1ee4fa4843ed77b19c058240b69406606d38412401473044022019de73b00f1d818fb388e83b2c8c31f6bce35ac624e215bc12f88f9dc33edf48022006ff814bb9f700ee6abc3294e146fac3efd4f13f0005236b41c0a946ee00c9ae012001010101010101010101010101010101010101010101010101010101010101018a76a91414011f7254d96b819c76986c277d115efce6f7b58763ac67210394854aa6eab5b2a8122cc726e9dded053a2184d88256816826d6231c068d4a5b7c8201208763a9144b6b2e5444c2639cc0fb7bcea5afba3f3cdce23988527c21030d417a46946384f88d5f3337267c5e579765875dc4daca813e21734b140639e752ae677502f501b175ac686800000000" },
7200 "304402207e8e82cd71ed4febeb593732c260456836e97d81896153ecd2b3cf320ca6861702202dd4a30f68f98ced7cc56a36369ac1fdd978248c5ff4ed204fc00cc625532989",
7201 "3045022100bd0be6100c4fd8f102ec220e1b053e4c4e2ecca25615490150007b40d314dc3902201a1e0ea266965b43164d9e6576f58fa6726d42883dd1c3996d2925c2e2260796",
7202 "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" },
7205 "3044022024cd52e4198c8ae0e414a86d86b5a65ea7450f2eb4e783096736d93395eca5ce022078f0094745b45be4d4b2b04dd5978c9e66ba49109e5704403e84aaf5f387d6be",
7206 "3045022100bbfb9d0a946d420807c86e985d636cceb16e71c3694ed186316251a00cbd807202207773223f9a337e145f64673825be9b30d07ef1542c82188b264bedcf7cda78c6",
7207 "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" }
7210 // anchors: commitment tx with six outputs untrimmed (minimum feerate)
7211 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7212 chan.feerate_per_kw = 645;
7214 test_commitment_with_anchors!("3044022025d97466c8049e955a5afce28e322f4b34d2561118e52332fb400f9b908cc0a402205dc6fba3a0d67ee142c428c535580cd1f2ff42e2f89b47e0c8a01847caffc312",
7215 "3045022100d57697c707b6f6d053febf24b98e8989f186eea42e37e9e91663ec2c70bb8f70022079b0715a472118f262f43016a674f59c015d9cafccec885968e76d9d9c5d0051",
7216 "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", {
7219 "30440220446f9e5c375db6a61d6eeee8b59219a30a4a37372afc2670a1a2889c78e9b943022061895f6088fb48b490ab2140a4842c277b64bf25ff591625dd0356e0c96ab7a8",
7220 "3045022100c1621ba26a99c263fd885feff5fda5ca2cc73df080b3a49ecf15164ee244d2a5022037f4cc7fd4441af39a83a0e44c3b1db7d64a4c8080e8697f9e952f85421a34d8",
7221 "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" },
7224 "3044022027a3ffcb8a007e3349d75382efbd4b3fb99fcbd479a18555e58697bd1278d5c402205c8303d46211c3ae8975fe84a0df08b4623119fecd03bc93b49d7f7a0c64c710",
7225 "3045022100b697aca55c6fb15e5348bb7387b584815fd15e8dd306afe0c477cb550d0c2d40022050b0f7e370f7604d2fec781fefe86715dbe95dff4dab88d628f509d62f854de1",
7226 "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" },
7229 "30440220013975ae356e6daf22a86a29f21c4f35aca82ed8f731a1103c60c74f5ed1c5aa02200350d4e5455cdbcacb7ccf174db5bed8286019e509a113f6b4c5e606ee12c9d7",
7230 "3045022100e69a29f78779577830e73f327073c93168896f1b89432124b7846f5def9cd9cb02204433db3697e6ed7ac89574ca066a749640e0c9e114ac2e0ee4545741fcf7b7e9",
7231 "02000000000101104f394af4c4fad78337f95e3e9f802f4c0d86ab231853af09b2853485613200040000000001000000010b0a0000000000002200204adb4e2f00643db396dd120d4e7dc17625f5f2c11a40d857accc862d6b7dd80e05004730440220013975ae356e6daf22a86a29f21c4f35aca82ed8f731a1103c60c74f5ed1c5aa02200350d4e5455cdbcacb7ccf174db5bed8286019e509a113f6b4c5e606ee12c9d783483045022100e69a29f78779577830e73f327073c93168896f1b89432124b7846f5def9cd9cb02204433db3697e6ed7ac89574ca066a749640e0c9e114ac2e0ee4545741fcf7b7e901008876a91414011f7254d96b819c76986c277d115efce6f7b58763ac67210394854aa6eab5b2a8122cc726e9dded053a2184d88256816826d6231c068d4a5b7c820120876475527c21030d417a46946384f88d5f3337267c5e579765875dc4daca813e21734b140639e752ae67a9148a486ff2e31d6158bf39e2608864d63fefd09d5b88ac6851b27568f7010000" },
7234 "304402205257017423644c7e831f30bc0c334eecfe66e9a6d2e92d157c5bece576b2be4f022047b21cf8e955e22b7471940563922d1a5852fb95459ca32905c7d46a19141664",
7235 "304402204f5de65a624e3f757adffb678bd887eb4e656538c5ea7044922f6ee3eed8a06202206ff6f7bfe73b565343cae76131ac658f1a9c60d3ca2343358cda60b9e35f94c8",
7236 "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" }
7239 // commitment tx with six outputs untrimmed (maximum feerate)
7240 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7241 chan.feerate_per_kw = 2069;
7243 test_commitment!("304502210090b96a2498ce0c0f2fadbec2aab278fed54c1a7838df793ec4d2c78d96ec096202204fdd439c50f90d483baa7b68feeef4bd33bc277695405447bcd0bfb2ca34d7bc",
7244 "3045022100ad9a9bbbb75d506ca3b716b336ee3cf975dd7834fcf129d7dd188146eb58a8b4022061a759ee417339f7fe2ea1e8deb83abb6a74db31a09b7648a932a639cda23e33",
7245 "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", {
7248 "3045022100f33513ee38abf1c582876f921f8fddc06acff48e04515532a32d3938de938ffd02203aa308a2c1863b7d6fdf53159a1465bf2e115c13152546cc5d74483ceaa7f699",
7249 "3045022100a637902a5d4c9ba9e7c472a225337d5aac9e2e3f6744f76e237132e7619ba0400220035c60d784a031c0d9f6df66b7eab8726a5c25397399ee4aa960842059eb3f9d",
7250 "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" },
7253 "3045022100ce07682cf4b90093c22dc2d9ab2a77ad6803526b655ef857221cc96af5c9e0bf02200f501cee22e7a268af40b555d15a8237c9f36ad67ef1841daf9f6a0267b1e6df",
7254 "3045022100e57e46234f8782d3ff7aa593b4f7446fb5316c842e693dc63ee324fd49f6a1c302204a2f7b44c48bd26e1554422afae13153eb94b29d3687b733d18930615fb2db61",
7255 "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" },
7258 "3045022100e3e35492e55f82ec0bc2f317ffd7a486d1f7024330fe9743c3559fc39f32ef0c02203d1d4db651fc388a91d5ad8ecdd8e83673063bc8eefe27cfd8c189090e3a23e0",
7259 "3044022068613fb1b98eb3aec7f44c5b115b12343c2f066c4277c82b5f873dfe68f37f50022028109b4650f3f528ca4bfe9a467aff2e3e43893b61b5159157119d5d95cf1c18",
7260 "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" },
7263 "304402207475aeb0212ef9bf5130b60937817ad88c9a87976988ef1f323f026148cc4a850220739fea17ad3257dcad72e509c73eebe86bee30b178467b9fdab213d631b109df",
7264 "3045022100d315522e09e7d53d2a659a79cb67fef56d6c4bddf3f46df6772d0d20a7beb7c8022070bcc17e288607b6a72be0bd83368bb6d53488db266c1cdb4d72214e4f02ac33",
7265 "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" }
7268 // anchors: commitment tx with six outputs untrimmed (maximum feerate)
7269 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7270 chan.feerate_per_kw = 2060;
7272 test_commitment_with_anchors!("304402206208aeb34e404bd052ce3f298dfa832891c9d42caec99fe2a0d2832e9690b94302201b034bfcc6fa9faec667a9b7cbfe0b8d85e954aa239b66277887b5088aff08c3",
7273 "304402201ce37a44b95213358c20f44404d6db7a6083bea6f58de6c46547ae41a47c9f8202206db1d45be41373e92f90d346381febbea8c78671b28c153e30ad1db3441a9497",
7274 "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", {
7277 "30440220011f999016570bbab9f3125377d0f35096b4dbe155f97c20f71829ead2817d1602201f23f7e17f6928734601c5d8613431eed5c90aa41c3106e8c1cb02ce32aacb5d",
7278 "3044022017da96dfb0eb4061fa0162dc6fa6b2e07ecc5040ab5e6cb07be59838460b3e58022079371ffc95002cc1dc2891ec38198c9c25aca8164304fe114f1b55e2ffd1ddd5",
7279 "02000000000101e7f364cf3a554b670767e723ef14b2af7a3eac70bd79dbde9256f384369c062d0200000000010000000175020000000000002200204adb4e2f00643db396dd120d4e7dc17625f5f2c11a40d857accc862d6b7dd80e05004730440220011f999016570bbab9f3125377d0f35096b4dbe155f97c20f71829ead2817d1602201f23f7e17f6928734601c5d8613431eed5c90aa41c3106e8c1cb02ce32aacb5d83473044022017da96dfb0eb4061fa0162dc6fa6b2e07ecc5040ab5e6cb07be59838460b3e58022079371ffc95002cc1dc2891ec38198c9c25aca8164304fe114f1b55e2ffd1ddd501008876a91414011f7254d96b819c76986c277d115efce6f7b58763ac67210394854aa6eab5b2a8122cc726e9dded053a2184d88256816826d6231c068d4a5b7c820120876475527c21030d417a46946384f88d5f3337267c5e579765875dc4daca813e21734b140639e752ae67a914b43e1b38138a41b37f7cd9a1d274bc63e3a9b5d188ac6851b27568f6010000" },
7282 "304402202d2d9681409b0a0987bd4a268ffeb112df85c4c988ac2a3a2475cb00a61912c302206aa4f4d1388b7d3282bc847871af3cca30766cc8f1064e3a41ec7e82221e10f7",
7283 "304402206426d67911aa6ff9b1cb147b093f3f65a37831a86d7c741d999afc0666e1773d022000bb71821650c70ea58d9bcdd03af736c41a5a8159d436c3ee0408a07394dcce",
7284 "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" },
7287 "3045022100f51cdaa525b7d4304548c642bb7945215eb5ae7d32874517cde67ca23ab0a12202206286d59e4b19926c6ac844be6f3ab8149a1ddb9c70f5026b7e83e40a6c08e6e1",
7288 "304502210091b16b1ac63b867e7a5ca0344f7b2aa1cdd49d4b72eac86a31e7ec6f069e20640220402bfb571ba3a9c49e3b0061c89303453803d0241059d899222aaac4799b5076",
7289 "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" },
7292 "304402202f058d99cb5a54f90773d43ba4e7a0089efd9f8269ef2da1b85d48a3e230555402205acc4bd6561830867d45cd7b84bba9fa35ad2b345016471c1737142bc99782c4",
7293 "304402202913f9cacea54efd2316cffa91219def9e0e111977216c1e76e9da80befab14f022000a9a69e8f37ebe4a39107ab50fab0dde537334588f8f412bbaca57b179b87a6",
7294 "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" }
7297 // commitment tx with five outputs untrimmed (minimum feerate)
7298 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7299 chan.feerate_per_kw = 2070;
7301 test_commitment!("304402204ca1ba260dee913d318271d86e10ca0f5883026fb5653155cff600fb40895223022037b145204b7054a40e08bb1fefbd826f827b40838d3e501423bcc57924bcb50c",
7302 "3044022001014419b5ba00e083ac4e0a85f19afc848aacac2d483b4b525d15e2ae5adbfe022015ebddad6ee1e72b47cb09f3e78459da5be01ccccd95dceca0e056a00cc773c1",
7303 "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", {
7306 "304402205f6b6d12d8d2529fb24f4445630566cf4abbd0f9330ab6c2bdb94222d6a2a0c502202f556258ae6f05b193749e4c541dfcc13b525a5422f6291f073f15617ba8579b",
7307 "30440220150b11069454da70caf2492ded9e0065c9a57f25ac2a4c52657b1d15b6c6ed85022068a38833b603c8892717206383611bad210f1cbb4b1f87ea29c6c65b9e1cb3e5",
7308 "02000000000101403ad7602b43293497a3a2235a12ecefda4f3a1f1d06e49b1786d945685de1ff0000000000000000000174020000000000002200204adb4e2f00643db396dd120d4e7dc17625f5f2c11a40d857accc862d6b7dd80e050047304402205f6b6d12d8d2529fb24f4445630566cf4abbd0f9330ab6c2bdb94222d6a2a0c502202f556258ae6f05b193749e4c541dfcc13b525a5422f6291f073f15617ba8579b014730440220150b11069454da70caf2492ded9e0065c9a57f25ac2a4c52657b1d15b6c6ed85022068a38833b603c8892717206383611bad210f1cbb4b1f87ea29c6c65b9e1cb3e501008576a91414011f7254d96b819c76986c277d115efce6f7b58763ac67210394854aa6eab5b2a8122cc726e9dded053a2184d88256816826d6231c068d4a5b7c820120876475527c21030d417a46946384f88d5f3337267c5e579765875dc4daca813e21734b140639e752ae67a914b43e1b38138a41b37f7cd9a1d274bc63e3a9b5d188ac6868f6010000" },
7311 "3045022100f960dfb1c9aee7ce1437efa65b523e399383e8149790e05d8fed27ff6e42fe0002202fe8613e062ffe0b0c518cc4101fba1c6de70f64a5bcc7ae663f2efae43b8546",
7312 "30450221009a6ed18e6873bc3644332a6ee21c152a5b102821865350df7a8c74451a51f9f2022050d801fb4895d7d7fbf452824c0168347f5c0cbe821cf6a97a63af5b8b2563c6",
7313 "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" },
7316 "3045022100ae5fc7717ae684bc1fcf9020854e5dbe9842c9e7472879ac06ff95ac2bb10e4e022057728ada4c00083a3e65493fb5d50a232165948a1a0f530ef63185c2c8c56504",
7317 "30440220408ad3009827a8fccf774cb285587686bfb2ed041f89a89453c311ce9c8ee0f902203c7392d9f8306d3a46522a66bd2723a7eb2628cb2d9b34d4c104f1766bf37502",
7318 "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" }
7321 // anchors: commitment tx with five outputs untrimmed (minimum feerate)
7322 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7323 chan.feerate_per_kw = 2061;
7325 test_commitment_with_anchors!("3045022100a2faf2ad7e323b2a82e07dc40b6847207ca6ad7b089f2c21dea9a4d37e52d59d02204c9480ce0358eb51d92a4342355a97e272e3cc45f86c612a76a3fe32fc3c4cb4",
7326 "304402204ab07c659412dd2cd6043b1ad811ab215e901b6b5653e08cb3d2fe63d3e3dc57022031c7b3d130f9380ef09581f4f5a15cb6f359a2e0a597146b96c3533a26d6f4cd",
7327 "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", {
7330 "3045022100e10744f572a2cd1d787c969e894b792afaed21217ee0480df0112d2fa3ef96ea02202af4f66eb6beebc36d8e98719ed6b4be1b181659fcb561fc491d8cfebff3aa85",
7331 "3045022100c3dc3ea50a0ca20e350f97b50c52c5514717cfa36cb9600918caac5cb556842b022049af018d676dde0c8e28ecf325f3ff5c1594261c4f7511d501f9d62d0594d2a2",
7332 "02000000000101cf32732fe2d1387ed4e2335f69ddd3c0f337dabc03269e742531f89d35e161d10200000000010000000174020000000000002200204adb4e2f00643db396dd120d4e7dc17625f5f2c11a40d857accc862d6b7dd80e0500483045022100e10744f572a2cd1d787c969e894b792afaed21217ee0480df0112d2fa3ef96ea02202af4f66eb6beebc36d8e98719ed6b4be1b181659fcb561fc491d8cfebff3aa8583483045022100c3dc3ea50a0ca20e350f97b50c52c5514717cfa36cb9600918caac5cb556842b022049af018d676dde0c8e28ecf325f3ff5c1594261c4f7511d501f9d62d0594d2a201008876a91414011f7254d96b819c76986c277d115efce6f7b58763ac67210394854aa6eab5b2a8122cc726e9dded053a2184d88256816826d6231c068d4a5b7c820120876475527c21030d417a46946384f88d5f3337267c5e579765875dc4daca813e21734b140639e752ae67a914b43e1b38138a41b37f7cd9a1d274bc63e3a9b5d188ac6851b27568f6010000" },
7335 "3045022100e1f51fb72fec604b029b348a3bb6363454e1869f5b1e24fd736f860c8039f8070220030a2c90186437d8c9b47d4897798c024521b1274991c4cdc125970b346094b1",
7336 "3045022100ec7ade6037e531629f24390ca9713782a04d648065d17fbe6b015981cdb296c202202d61049a6ecba2fb5314f3edcda2361cad187a89bea6e5d15185354d80c0c085",
7337 "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" },
7340 "304402203479f81a1d83c516957679dc98bf91d35deada967739a8e3869e3e8db08246130220053c8e154b97e3019048dcec3d51bfaf396f36861fbda6d33f0e2a57155c8b9f",
7341 "3045022100a558eb5caa04e35a4417c1f0123ac12eec5f6badee28f5764dc6b69486e594f802201589b12784e242f205832d2d032149bd4e79433ec304c05394241fc7dcba5a71",
7342 "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" }
7345 // commitment tx with five outputs untrimmed (maximum feerate)
7346 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7347 chan.feerate_per_kw = 2194;
7349 test_commitment!("304402204bb3d6e279d71d9da414c82de42f1f954267c762b2e2eb8b76bc3be4ea07d4b0022014febc009c5edc8c3fc5d94015de163200f780046f1c293bfed8568f08b70fb3",
7350 "3044022072c2e2b1c899b2242656a537dde2892fa3801be0d6df0a87836c550137acde8302201654aa1974d37a829083c3ba15088689f30b56d6a4f6cb14c7bad0ee3116d398",
7351 "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", {
7354 "3045022100939726680351a7856c1bc386d4a1f422c7d29bd7b56afc139570f508474e6c40022023175a799ccf44c017fbaadb924c40b2a12115a5b7d0dfd3228df803a2de8450",
7355 "304502210099c98c2edeeee6ec0fb5f3bea8b79bb016a2717afa9b5072370f34382de281d302206f5e2980a995e045cf90a547f0752a7ee99d48547bc135258fe7bc07e0154301",
7356 "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" },
7359 "3044022021bb883bf324553d085ba2e821cad80c28ef8b303dbead8f98e548783c02d1600220638f9ef2a9bba25869afc923f4b5dc38be3bb459f9efa5d869392d5f7779a4a0",
7360 "3045022100fd85bd7697b89c08ec12acc8ba89b23090637d83abd26ca37e01ae93e67c367302202b551fe69386116c47f984aab9c8dfd25d864dcde5d3389cfbef2447a85c4b77",
7361 "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" },
7364 "3045022100c9e6f0454aa598b905a35e641a70cc9f67b5f38cc4b00843a041238c4a9f1c4a0220260a2822a62da97e44583e837245995ca2e36781769c52f19e498efbdcca262b",
7365 "30450221008a9f2ea24cd455c2b64c1472a5fa83865b0a5f49a62b661801e884cf2849af8302204d44180e50bf6adfcf1c1e581d75af91aba4e28681ce4a5ee5f3cbf65eca10f3",
7366 "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" }
7369 // anchors: commitment tx with five outputs untrimmed (maximum feerate)
7370 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7371 chan.feerate_per_kw = 2184;
7373 test_commitment_with_anchors!("3044022013d326f80ff7607cf366c823fcbbcb7a2b10322484825f151e6c4c756af24b8f02201ba05b9d8beb7cea2947f9f4d9e03f90435e93db2dd48b32eb9ca3f3dd042c79",
7374 "30440220555c05261f72c5b4702d5c83a608630822b473048724b08640d6e75e345094250220448950b74a96a56963928ba5db8b457661a742c855e69d239b3b6ab73de307a3",
7375 "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", {
7378 "304402202e03ba1390998b3487e9a7fefcb66814c09abea0ef1bcc915dbaefbcf310569a02206bd10493a105ac69048e9bcedcb8e3301ef81b55018d911a4afd297297f98d30",
7379 "304402200c3952ca04be0c60dcc0b7873a0829f560607524943554ae4a27d8d967166199022021a68657b88e22f9bf9ac6065be412685aff643d17049f04f2e99e86197dabb1",
7380 "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" },
7383 "304402201f8a6adda2403bc400c919ea69d72d315337291e00d02cde085ea32953dbc50002202d65230da98df7af8ebefd2b60b457d0945232988ee2d7460a94a77d414a9acc",
7384 "3045022100ea69c9273b8914ac62b5b7082d6ac1da2b7b065ebf2ef3cd6403f5305ce3f26802203d98736ea97638895a898dfcc5ee0d0c55eb496b3964df0bb25d223688ea8b87",
7385 "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" },
7388 "3045022100ea6e4c9b8f56dd9cf5799492a201cdd65b8bc9bc089c3cff34107896ae313f90022034760f7760975cc68e8917a7f62894e25583da7be11af557c4fc402661d0cbf8",
7389 "30440220717012f2f7ef6cac590aaf66c2109132c93ffba245959ac62d82e394ba80191302203f00fd9cb37c92c6b0ad4b33e62c3e55b04e5c2cfa0adcca5a9bc49774eeca8a",
7390 "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" }
7393 // commitment tx with four outputs untrimmed (minimum feerate)
7394 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7395 chan.feerate_per_kw = 2195;
7397 test_commitment!("304402201a8c1b1f9671cd9e46c7323a104d7047cc48d3ee80d40d4512e0c72b8dc65666022066d7f9a2ce18c9eb22d2739ffcce05721c767f9b607622a31b6ea5793ddce403",
7398 "3044022044d592025b610c0d678f65032e87035cdfe89d1598c522cc32524ae8172417c30220749fef9d5b2ae8cdd91ece442ba8809bc891efedae2291e578475f97715d1767",
7399 "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", {
7402 "3045022100e57b845066a06ee7c2cbfc29eabffe52daa9bf6f6de760066d04df9f9b250e0002202ffb197f0e6e0a77a75a9aff27014bd3de83b7f748d7efef986abe655e1dd50e",
7403 "3045022100ecc8c6529d0b2316d046f0f0757c1e1c25a636db168ec4f3aa1b9278df685dc0022067ae6b65e936f1337091f7b18a15935b608c5f2cdddb2f892ed0babfdd376d76",
7404 "020000000001018130a10f09b13677ba2885a8bca32860f3a952e5912b829a473639b5a2c07b900000000000000000000109060000000000002200204adb4e2f00643db396dd120d4e7dc17625f5f2c11a40d857accc862d6b7dd80e0500483045022100e57b845066a06ee7c2cbfc29eabffe52daa9bf6f6de760066d04df9f9b250e0002202ffb197f0e6e0a77a75a9aff27014bd3de83b7f748d7efef986abe655e1dd50e01483045022100ecc8c6529d0b2316d046f0f0757c1e1c25a636db168ec4f3aa1b9278df685dc0022067ae6b65e936f1337091f7b18a15935b608c5f2cdddb2f892ed0babfdd376d7601008576a91414011f7254d96b819c76986c277d115efce6f7b58763ac67210394854aa6eab5b2a8122cc726e9dded053a2184d88256816826d6231c068d4a5b7c820120876475527c21030d417a46946384f88d5f3337267c5e579765875dc4daca813e21734b140639e752ae67a9148a486ff2e31d6158bf39e2608864d63fefd09d5b88ac6868f7010000" },
7407 "3045022100d193b7ecccad8057571620a0b1ffa6c48e9483311723b59cf536043b20bc51550220546d4bd37b3b101ecda14f6c907af46ec391abce1cd9c7ce22b1a62b534f2f2a",
7408 "3044022014d66f11f9cacf923807eba49542076c5fe5cccf252fb08fe98c78ef3ca6ab5402201b290dbe043cc512d9d78de074a5a129b8759bc6a6c546b190d120b690bd6e82",
7409 "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" }
7412 // anchors: commitment tx with four outputs untrimmed (minimum feerate)
7413 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7414 chan.feerate_per_kw = 2185;
7416 test_commitment_with_anchors!("3044022040f63a16148cf35c8d3d41827f5ae7f7c3746885bb64d4d1b895892a83812b3e02202fcf95c2bf02c466163b3fa3ced6a24926fbb4035095a96842ef516e86ba54c0",
7417 "3045022100cd8479cfe1edb1e5a1d487391e0451a469c7171e51e680183f19eb4321f20e9b02204eab7d5a6384b1b08e03baa6e4d9748dfd2b5ab2bae7e39604a0d0055bbffdd5",
7418 "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", {
7421 "304502210094480e38afb41d10fae299224872f19c53abe23c7033a1c0642c48713e7863a10220726dd9456407682667dc4bd9c66975acb3744961770b5002f7eb9c0df9ef2f3e",
7422 "304402203148dac61513dc0361738cba30cb341a1e580f8acd5ab0149bf65bd670688cf002207e5d9a0fcbbea2c263bc714fa9e9c44d7f582ea447f366119fc614a23de32f1f",
7423 "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" },
7426 "304402200dbde868dbc20c6a2433fe8979ba5e3f966b1c2d1aeb615f1c42e9c938b3495402202eec5f663c8b601c2061c1453d35de22597c137d1907a2feaf714d551035cb6e",
7427 "3045022100b896bded41d7feac7af25c19e35c53037c53b50e73cfd01eb4ba139c7fdf231602203a3be049d3d89396c4dc766d82ce31e237da8bc3a93e2c7d35992d1932d9cfeb",
7428 "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" }
7431 // commitment tx with four outputs untrimmed (maximum feerate)
7432 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7433 chan.feerate_per_kw = 3702;
7435 test_commitment!("304502210092a587aeb777f869e7ff0d7898ea619ee26a3dacd1f3672b945eea600be431100220077ee9eae3528d15251f2a52b607b189820e57a6ccfac8d1af502b132ee40169",
7436 "3045022100e5efb73c32d32da2d79702299b6317de6fb24a60476e3855926d78484dd1b3c802203557cb66a42c944ef06e00bcc4da35a5bcb2f185aab0f8e403e519e1d66aaf75",
7437 "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", {
7440 "304402206fa54c11f98c3bae1e93df43fc7affeb05b476bf8060c03e29c377c69bc08e8b0220672701cce50d5c379ff45a5d2cfe48ac44973adb066ac32608e21221d869bb89",
7441 "304402206e36c683ebf2cb16bcef3d5439cf8b53cd97280a365ed8acd7abb85a8ba5f21c02206e8621edfc2a5766cbc96eb67fd501127ff163eb6b85518a39f7d4974aef126f",
7442 "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" },
7445 "3044022057649739b0eb74d541ead0dfdb3d4b2c15aa192720031044c3434c67812e5ca902201e5ede42d960ae551707f4a6b34b09393cf4dee2418507daa022e3550dbb5817",
7446 "304402207faad26678c8850e01b4a0696d60841f7305e1832b786110ee9075cb92ed14a30220516ef8ee5dfa80824ea28cbcec0dd95f8b847146257c16960db98507db15ffdc",
7447 "020000000001018db483bff65c70ee71d8282aeec5a880e2e2b39e45772bda5460403095c62e3f0100000000000000000176050000000000002200204adb4e2f00643db396dd120d4e7dc17625f5f2c11a40d857accc862d6b7dd80e0500473044022057649739b0eb74d541ead0dfdb3d4b2c15aa192720031044c3434c67812e5ca902201e5ede42d960ae551707f4a6b34b09393cf4dee2418507daa022e3550dbb58170147304402207faad26678c8850e01b4a0696d60841f7305e1832b786110ee9075cb92ed14a30220516ef8ee5dfa80824ea28cbcec0dd95f8b847146257c16960db98507db15ffdc012004040404040404040404040404040404040404040404040404040404040404048a76a91414011f7254d96b819c76986c277d115efce6f7b58763ac67210394854aa6eab5b2a8122cc726e9dded053a2184d88256816826d6231c068d4a5b7c8201208763a91418bc1a114ccf9c052d3d23e28d3b0a9d1227434288527c21030d417a46946384f88d5f3337267c5e579765875dc4daca813e21734b140639e752ae677502f801b175ac686800000000" }
7450 // anchors: commitment tx with four outputs untrimmed (maximum feerate)
7451 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7452 chan.feerate_per_kw = 3686;
7454 test_commitment_with_anchors!("30440220784485cf7a0ad7979daf2c858ffdaf5298d0020cea7aea466843e7948223bd9902206031b81d25e02a178c64e62f843577fdcdfc7a1decbbfb54cd895de692df85ca",
7455 "3045022100c268496aad5c3f97f25cf41c1ba5483a12982de29b222051b6de3daa2229413b02207f3c82d77a2c14f0096ed9bb4c34649483bb20fa71f819f71af44de6593e8bb2",
7456 "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", {
7459 "304402202cfe6618926ca9f1574f8c4659b425e9790b4677ba2248d77901290806130ffe02204ab37bb0287abcdb8b750b018d41a09effe37cb65ff801fa70d3f1a416599841",
7460 "3044022030b318139715e3b34f19be852cc01c1c0e1599e8b926a73df2bfb70dd186ddee022062a2b7398aed9f563b4014da04a1a99debd0ff663ceece68a547df5982dc2d72",
7461 "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" },
7464 "30440220687af8544d335376620a6f4b5412bfd0da48de047c1785674f26e669d4a3ff82022058591c1e3a6c50017427d38a8f756eb685bdab88ec73838eed3530048861f9d5",
7465 "30440220109f1a62b5a13d28d5b7634dd7693b1d5994eb404c4bb4a9a80aa540d3984d170220307251107ff8499a23e99abce7dda4f1c707c98abddb9405a83de0081cde8ace",
7466 "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" }
7469 // commitment tx with three outputs untrimmed (minimum feerate)
7470 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7471 chan.feerate_per_kw = 3703;
7473 test_commitment!("3045022100b495d239772a237ff2cf354b1b11be152fd852704cb184e7356d13f2fb1e5e430220723db5cdb9cbd6ead7bfd3deb419cf41053a932418cbb22a67b581f40bc1f13e",
7474 "304402201b736d1773a124c745586217a75bed5f66c05716fbe8c7db4fdb3c3069741cdd02205083f39c321c1bcadfc8d97e3c791a66273d936abac0c6a2fde2ed46019508e1",
7475 "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", {
7478 "3045022100c34c61735f93f2e324cc873c3b248111ccf8f6db15d5969583757010d4ad2b4602207867bb919b2ddd6387873e425345c9b7fd18d1d66aba41f3607bc2896ef3c30a",
7479 "3045022100988c143e2110067117d2321bdd4bd16ca1734c98b29290d129384af0962b634e02206c1b02478878c5f547018b833986578f90c3e9be669fe5788ad0072a55acbb05",
7480 "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" }
7483 // anchors: commitment tx with three outputs untrimmed (minimum feerate)
7484 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7485 chan.feerate_per_kw = 3687;
7487 test_commitment_with_anchors!("3045022100ad6c71569856b2d7ff42e838b4abe74a713426b37f22fa667a195a4c88908c6902202b37272b02a42dc6d9f4f82cab3eaf84ac882d9ed762859e1e75455c2c228377",
7488 "3045022100c970799bcb33f43179eb43b3378a0a61991cf2923f69b36ef12548c3df0e6d500220413dc27d2e39ee583093adfcb7799be680141738babb31cc7b0669a777a31f5d",
7489 "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", {
7492 "3045022100b287bb8e079a62dcb3aaa8b6c67c0f434a87ebf64ab0bcfb2fc14b55576b859f02206d37c2eb5fd04cfc9eb0534c76a28a98da251b84a931377cce307af39dfaed74",
7493 "3045022100a497c64faea286ec4221f48628086dc6403fd7b60a23c4176e8ebbca15ae70dc0220754e20e968e96cf6421fd2a672c8c26d3bc6e19218cfc8fc2aa51fce026c14b1",
7494 "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" }
7497 // commitment tx with three outputs untrimmed (maximum feerate)
7498 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7499 chan.feerate_per_kw = 4914;
7501 test_commitment!("3045022100b4b16d5f8cc9fc4c1aff48831e832a0d8990e133978a66e302c133550954a44d022073573ce127e2200d316f6b612803a5c0c97b8d20e1e44dbe2ac0dd2fb8c95244",
7502 "3045022100d72638bc6308b88bb6d45861aae83e5b9ff6e10986546e13bce769c70036e2620220320be7c6d66d22f30b9fcd52af66531505b1310ca3b848c19285b38d8a1a8c19",
7503 "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", {
7506 "3045022100f43591c156038ba217756006bb3c55f7d113a325cdd7d9303c82115372858d68022016355b5aadf222bc8d12e426c75f4a03423917b2443a103eb2a498a3a2234374",
7507 "30440220585dee80fafa264beac535c3c0bb5838ac348b156fdc982f86adc08dfc9bfd250220130abb82f9f295cc9ef423dcfef772fde2acd85d9df48cc538981d26a10a9c10",
7508 "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" }
7511 // anchors: commitment tx with three outputs untrimmed (maximum feerate)
7512 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7513 chan.feerate_per_kw = 4893;
7515 test_commitment_with_anchors!("3045022100a8771147109e4d3f44a5976c3c3de98732bbb77308d21444dbe0d76faf06480e02200b4e916e850c3d1f918de87bbbbb07843ffea1d4658dfe060b6f9ccd96d34be8",
7516 "30440220086288faceab47461eb2d808e9e9b0cb3ffc24a03c2f18db7198247d38f10e58022031d1c2782a58c8c6ce187d0019eb47a83babdf3040e2caff299ab48f7e12b1fa",
7517 "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", {
7520 "30450221008db80f8531104820b3e894492b4463f074f965b542e1b5c153ddfb108a5ea642022030b203d857a2b3581c2087a7bf17c95d04fadc1c6cdae88c620477f2dccb1ee4",
7521 "3045022100e5fbae857c47dbfc050a05924bd449fc9804798bd6442002c578437dc34450810220296589bc387645512345299e307116aaac4ce9fc752abcd1936b802d03526312",
7522 "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" }
7525 // commitment tx with two outputs untrimmed (minimum feerate)
7526 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7527 chan.feerate_per_kw = 4915;
7529 test_commitment!("304402203a286936e74870ca1459c700c71202af0381910a6bfab687ef494ef1bc3e02c902202506c362d0e3bee15e802aa729bf378e051644648253513f1c085b264cc2a720",
7530 "30450221008a953551f4d67cb4df3037207fc082ddaf6be84d417b0bd14c80aab66f1b01a402207508796dc75034b2dee876fe01dc05a08b019f3e5d689ac8842ade2f1befccf5",
7531 "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", {});
7533 // anchors: commitment tx with two outputs untrimmed (minimum feerate)
7534 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7535 chan.feerate_per_kw = 4894;
7537 test_commitment_with_anchors!("3045022100e784a66b1588575801e237d35e510fd92a81ae3a4a2a1b90c031ad803d07b3f3022021bc5f16501f167607d63b681442da193eb0a76b4b7fd25c2ed4f8b28fd35b95",
7538 "30450221009f16ac85d232e4eddb3fcd750a68ebf0b58e3356eaada45d3513ede7e817bf4c02207c2b043b4e5f971261975406cb955219fa56bffe5d834a833694b5abc1ce4cfd",
7539 "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", {});
7541 // commitment tx with two outputs untrimmed (maximum feerate)
7542 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7543 chan.feerate_per_kw = 9651180;
7545 test_commitment!("304402200a8544eba1d216f5c5e530597665fa9bec56943c0f66d98fc3d028df52d84f7002201e45fa5c6bc3a506cc2553e7d1c0043a9811313fc39c954692c0d47cfce2bbd3",
7546 "3045022100e11b638c05c650c2f63a421d36ef8756c5ce82f2184278643520311cdf50aa200220259565fb9c8e4a87ccaf17f27a3b9ca4f20625754a0920d9c6c239d8156a11de",
7547 "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", {});
7549 // commitment tx with one output untrimmed (minimum feerate)
7550 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7551 chan.feerate_per_kw = 9651181;
7553 test_commitment!("304402202ade0142008309eb376736575ad58d03e5b115499709c6db0b46e36ff394b492022037b63d78d66404d6504d4c4ac13be346f3d1802928a6d3ad95a6a944227161a2",
7554 "304402207e8d51e0c570a5868a78414f4e0cbfaed1106b171b9581542c30718ee4eb95ba02203af84194c97adf98898c9afe2f2ed4a7f8dba05a2dfab28ac9d9c604aa49a379",
7555 "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", {});
7557 // anchors: commitment tx with one output untrimmed (minimum feerate)
7558 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7559 chan.feerate_per_kw = 6216010;
7561 test_commitment_with_anchors!("30450221008fd5dbff02e4b59020d4cd23a3c30d3e287065fda75a0a09b402980adf68ccda022001e0b8b620cd915ddff11f1de32addf23d81d51b90e6841b2cb8dcaf3faa5ecf",
7562 "30450221009ad80792e3038fe6968d12ff23e6888a565c3ddd065037f357445f01675d63f3022018384915e5f1f4ae157e15debf4f49b61c8d9d2b073c7d6f97c4a68caa3ed4c1",
7563 "02000000000101bef67e4e2fb9ddeeb3461973cd4c62abb35050b1add772995b820b584a488489000000000038b02b80024a01000000000000220020e9e86e4823faa62e222ebc858a226636856158f07e69898da3b0d1af0ddb3994c0c62d0000000000220020f3394e1e619b0eca1f91be2fb5ab4dfc59ba5b84ebe014ad1d43a564d012994a04004830450221009ad80792e3038fe6968d12ff23e6888a565c3ddd065037f357445f01675d63f3022018384915e5f1f4ae157e15debf4f49b61c8d9d2b073c7d6f97c4a68caa3ed4c1014830450221008fd5dbff02e4b59020d4cd23a3c30d3e287065fda75a0a09b402980adf68ccda022001e0b8b620cd915ddff11f1de32addf23d81d51b90e6841b2cb8dcaf3faa5ecf01475221023da092f6980e58d2c037173180e9a465476026ee50f96695963e8efe436f54eb21030e9f7b623d2ccc7c9bd44d66d5ce21ce504c0acf6385a132cec6d3c39fa711c152ae3e195220", {});
7565 // commitment tx with fee greater than funder amount
7566 chan.value_to_self_msat = 6993000000; // 7000000000 - 7000000
7567 chan.feerate_per_kw = 9651936;
7569 test_commitment!("304402202ade0142008309eb376736575ad58d03e5b115499709c6db0b46e36ff394b492022037b63d78d66404d6504d4c4ac13be346f3d1802928a6d3ad95a6a944227161a2",
7570 "304402207e8d51e0c570a5868a78414f4e0cbfaed1106b171b9581542c30718ee4eb95ba02203af84194c97adf98898c9afe2f2ed4a7f8dba05a2dfab28ac9d9c604aa49a379",
7571 "02000000000101bef67e4e2fb9ddeeb3461973cd4c62abb35050b1add772995b820b584a488489000000000038b02b8001c0c62d0000000000160014cc1b07838e387deacd0e5232e1e8b49f4c29e484040047304402207e8d51e0c570a5868a78414f4e0cbfaed1106b171b9581542c30718ee4eb95ba02203af84194c97adf98898c9afe2f2ed4a7f8dba05a2dfab28ac9d9c604aa49a3790147304402202ade0142008309eb376736575ad58d03e5b115499709c6db0b46e36ff394b492022037b63d78d66404d6504d4c4ac13be346f3d1802928a6d3ad95a6a944227161a201475221023da092f6980e58d2c037173180e9a465476026ee50f96695963e8efe436f54eb21030e9f7b623d2ccc7c9bd44d66d5ce21ce504c0acf6385a132cec6d3c39fa711c152ae3e195220", {});
7573 // commitment tx with 3 htlc outputs, 2 offered having the same amount and preimage
7574 chan.value_to_self_msat = 7_000_000_000 - 2_000_000;
7575 chan.feerate_per_kw = 253;
7576 chan.pending_inbound_htlcs.clear();
7577 chan.pending_inbound_htlcs.push({
7578 let mut out = InboundHTLCOutput{
7580 amount_msat: 2000000,
7582 payment_hash: PaymentHash([0; 32]),
7583 state: InboundHTLCState::Committed,
7585 out.payment_hash.0 = Sha256::hash(&hex::decode("0101010101010101010101010101010101010101010101010101010101010101").unwrap()).into_inner();
7588 chan.pending_outbound_htlcs.clear();
7589 chan.pending_outbound_htlcs.push({
7590 let mut out = OutboundHTLCOutput{
7592 amount_msat: 5000000,
7594 payment_hash: PaymentHash([0; 32]),
7595 state: OutboundHTLCState::Committed,
7596 source: HTLCSource::dummy(),
7598 out.payment_hash.0 = Sha256::hash(&hex::decode("0505050505050505050505050505050505050505050505050505050505050505").unwrap()).into_inner();
7601 chan.pending_outbound_htlcs.push({
7602 let mut out = OutboundHTLCOutput{
7604 amount_msat: 5000000,
7606 payment_hash: PaymentHash([0; 32]),
7607 state: OutboundHTLCState::Committed,
7608 source: HTLCSource::dummy(),
7610 out.payment_hash.0 = Sha256::hash(&hex::decode("0505050505050505050505050505050505050505050505050505050505050505").unwrap()).into_inner();
7614 test_commitment!("30440220048705bec5288d28b3f29344b8d124853b1af423a568664d2c6f02c8ea886525022060f998a461052a2476b912db426ea2a06700953a241135c7957f2e79bc222df9",
7615 "3045022100c4f1d60b6fca9febc8b39de1a31e84c5f7c4b41c97239ef05f4350aa484c6b5e02200c5134ac8b20eb7a29d0dd4a501f6aa8fefb8489171f4cb408bd2a32324ab03f",
7616 "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", {
7619 "304502210081cbb94121761d34c189cd4e6a281feea6f585060ad0ba2632e8d6b3c6bb8a6c02201007981bbd16539d63df2805b5568f1f5688cd2a885d04706f50db9b77ba13c6",
7620 "304502210090ed76aeb21b53236a598968abc66e2024691d07b62f53ddbeca8f93144af9c602205f873af5a0c10e62690e9aba09740550f194a9dc455ba4c1c23f6cde7704674c",
7621 "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" },
7623 "304402201d0f09d2bf7bc245a4f17980e1e9164290df16c70c6a2ff1592f5030d6108581022061e744a7dc151b36bf0aff7a4f1812ba90b8b03633bb979a270d19858fd960c5",
7624 "30450221009aef000d2e843a4202c1b1a2bf554abc9a7902bf49b2cb0759bc507456b7ebad02204e7c3d193ede2fd2b4cd6b39f51a920e581e35575e357e44d7b699c40ce61d39",
7625 "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" },
7627 "30440220010bf035d5823596e50dce2076a4d9f942d8d28031c9c428b901a02b6b8140de02203250e8e4a08bc5b4ecdca4d0eedf98223e02e3ac1c0206b3a7ffdb374aa21e5f",
7628 "30440220073de0067b88e425b3018b30366bfeda0ccb703118ccd3d02ead08c0f53511d002203fac50ac0e4cf8a3af0b4b1b12e801650591f748f8ddf1e089c160f10b69e511",
7629 "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" }
7632 test_commitment_with_anchors!("3045022100c592f6b80d35b4f5d1e3bc9788f51141a0065be6013bad53a1977f7c444651660220278ac06ead9016bfb8dc476f186eabace2b02793b2f308442f5b0d5f24a68948",
7633 "3045022100c37ac4fc8538677631230c4b286f36b6f54c51fb4b34ef0bd0ba219ba47452630220278e09a745454ea380f3694392ed113762c68dd209b48360f547541088be9e45",
7634 "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", {
7637 "304402202060a5acb12105e92f27d7b86e6caf1e003d9d82068338e5a8a9a0d14cba11260220030ca4dba8fad24a2e395906220c991eccd5369bc4b0f216d217b5f86d1fc61d",
7638 "3044022044f5425fe630fa614f349f55642e4a0b76e2583054b21543821660d9e8f3735702207f70424835b541874ca8bf0443cca4028afa2f6c03a17b0688df85d5c44eeefc",
7639 "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" },
7641 "304402206fde7eb6d7a47fdc63705d3db2169054e229f10342dea66f150b163381f48a0802201be28509c2de9be4b7ab72c569c6fd51c0ce0904fea459142f31d442cd043eb8",
7642 "3045022100ad0236a78dbd029d3a8f583f7f82ee62892273d45303d00ef5a03fecf8903a36022004b2db33f8ff2f4a08ca6127c9cbfd9144c691a2feb9287e36ae6bc7c83c5a5f",
7643 "02000000000101aa443fb63abc1e8c754f98a7b96c27cb02b21d891d1242a16b630dc32c2afe2903000000000100000001e0120000000000002200204adb4e2f00643db396dd120d4e7dc17625f5f2c11a40d857accc862d6b7dd80e050047304402206fde7eb6d7a47fdc63705d3db2169054e229f10342dea66f150b163381f48a0802201be28509c2de9be4b7ab72c569c6fd51c0ce0904fea459142f31d442cd043eb883483045022100ad0236a78dbd029d3a8f583f7f82ee62892273d45303d00ef5a03fecf8903a36022004b2db33f8ff2f4a08ca6127c9cbfd9144c691a2feb9287e36ae6bc7c83c5a5f01008876a91414011f7254d96b819c76986c277d115efce6f7b58763ac67210394854aa6eab5b2a8122cc726e9dded053a2184d88256816826d6231c068d4a5b7c820120876475527c21030d417a46946384f88d5f3337267c5e579765875dc4daca813e21734b140639e752ae67a9142002cc93ebefbb1b73f0af055dcc27a0b504ad7688ac6851b27568f9010000" },
7645 "304402205eebc78d8ae6a36c27ef80172359eb757fb18e99fa75b28c37ffe3444b967bc7022060a01c33398d4d8244c42c762fb699e9f61c1f034ff976df2c94350c5a6032a7",
7646 "3045022100ad3fd523594e1b876316401774a30ee6c48bb7fa0efd768bf9a2d022201311ff02207bed627ed8e01041137f03dbaf03c836970be27a4d50f69d90cf1282ff2815e3",
7647 "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" }
7652 fn test_per_commitment_secret_gen() {
7653 // Test vectors from BOLT 3 Appendix D:
7655 let mut seed = [0; 32];
7656 seed[0..32].clone_from_slice(&hex::decode("0000000000000000000000000000000000000000000000000000000000000000").unwrap());
7657 assert_eq!(chan_utils::build_commitment_secret(&seed, 281474976710655),
7658 hex::decode("02a40c85b6f28da08dfdbe0926c53fab2de6d28c10301f8f7c4073d5e42e3148").unwrap()[..]);
7660 seed[0..32].clone_from_slice(&hex::decode("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF").unwrap());
7661 assert_eq!(chan_utils::build_commitment_secret(&seed, 281474976710655),
7662 hex::decode("7cc854b54e3e0dcdb010d7a3fee464a9687be6e8db3be6854c475621e007a5dc").unwrap()[..]);
7664 assert_eq!(chan_utils::build_commitment_secret(&seed, 0xaaaaaaaaaaa),
7665 hex::decode("56f4008fb007ca9acf0e15b054d5c9fd12ee06cea347914ddbaed70d1c13a528").unwrap()[..]);
7667 assert_eq!(chan_utils::build_commitment_secret(&seed, 0x555555555555),
7668 hex::decode("9015daaeb06dba4ccc05b91b2f73bd54405f2be9f217fbacd3c5ac2e62327d31").unwrap()[..]);
7670 seed[0..32].clone_from_slice(&hex::decode("0101010101010101010101010101010101010101010101010101010101010101").unwrap());
7671 assert_eq!(chan_utils::build_commitment_secret(&seed, 1),
7672 hex::decode("915c75942a26bb3a433a8ce2cb0427c29ec6c1775cfc78328b57f6ba7bfeaa9c").unwrap()[..]);
7676 fn test_key_derivation() {
7677 // Test vectors from BOLT 3 Appendix E:
7678 let secp_ctx = Secp256k1::new();
7680 let base_secret = SecretKey::from_slice(&hex::decode("000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f").unwrap()[..]).unwrap();
7681 let per_commitment_secret = SecretKey::from_slice(&hex::decode("1f1e1d1c1b1a191817161514131211100f0e0d0c0b0a09080706050403020100").unwrap()[..]).unwrap();
7683 let base_point = PublicKey::from_secret_key(&secp_ctx, &base_secret);
7684 assert_eq!(base_point.serialize()[..], hex::decode("036d6caac248af96f6afa7f904f550253a0f3ef3f5aa2fe6838a95b216691468e2").unwrap()[..]);
7686 let per_commitment_point = PublicKey::from_secret_key(&secp_ctx, &per_commitment_secret);
7687 assert_eq!(per_commitment_point.serialize()[..], hex::decode("025f7117a78150fe2ef97db7cfc83bd57b2e2c0d0dd25eaf467a4a1c2a45ce1486").unwrap()[..]);
7689 assert_eq!(chan_utils::derive_public_key(&secp_ctx, &per_commitment_point, &base_point).unwrap().serialize()[..],
7690 hex::decode("0235f2dbfaa89b57ec7b055afe29849ef7ddfeb1cefdb9ebdc43f5494984db29e5").unwrap()[..]);
7692 assert_eq!(chan_utils::derive_private_key(&secp_ctx, &per_commitment_point, &base_secret).unwrap(),
7693 SecretKey::from_slice(&hex::decode("cbced912d3b21bf196a766651e436aff192362621ce317704ea2f75d87e7be0f").unwrap()[..]).unwrap());
7695 assert_eq!(chan_utils::derive_public_revocation_key(&secp_ctx, &per_commitment_point, &base_point).unwrap().serialize()[..],
7696 hex::decode("02916e326636d19c33f13e8c0c3a03dd157f332f3e99c317c141dd865eb01f8ff0").unwrap()[..]);
7698 assert_eq!(chan_utils::derive_private_revocation_key(&secp_ctx, &per_commitment_secret, &base_secret).unwrap(),
7699 SecretKey::from_slice(&hex::decode("d09ffff62ddb2297ab000cc85bcb4283fdeb6aa052affbc9dddcf33b61078110").unwrap()[..]).unwrap());