v0.0.119 - Dec 15, 2023 - "Spring Cleaning for Christmas"

API Updates

• The LDK crate ecosystem MSRV has been increased to 1.63 (#2681).
• The bitcoin dependency has been updated to version 0.30 (#2740).
• lightning-invoice::payment::* have been replaced with parameter generation
  via payment_parameters_from[_zero_amount]_invoice (#2727).
• {CoinSelection,Wallet}Source::sign_tx are now sign_psbt, providing more
  information, incl spent outputs, about the transaction being signed (#2775).
• Logger Records now include channel_id and peer_id fields. These are
  opportunistically filled in when a log record is specific to a given channel
  and/or peer, and may occasionally be spuriously empty (#2314).
• When handling send or reply onion messages (e.g. for BOLT12 payments), a new
  Event::ConnectionNeeded may be raised, indicating a direct connection
  should be made to a payee or an introduction point. This event is expected to
  be removed once onion message forwarding is widespread in the network (#2723)
• Scoring data decay now happens via ScoreUpDate::time_passed, called from
  lightning-background-processor. process_events_async now takes a new
  time-fetch function, and ScoreUpDate methods now take the current time as a
  Duration argument. This avoids fetching time during pathfinding (#2656).
• Receiving payments to multi-hop blinded paths is now supported (#2688).
• MessageRouter and Router now feature methods to generate blinded paths to
  the local node for incoming messages and payments. Router now extends
  MessageRouter, and both are used in ChannelManager when processing or
  creating BOLT12 structures to generate multi-hop blinded paths (#1781).
• lightning-transaction-sync now supports Electrum-based sync (#2685).
• Confirm::get_relevant_txids now returns the height at which a transaction
  was confirmed. This can be used to assist in reorg detection (#2685).
• ConfirmationTarget::MaxAllowedNonAnchorChannelRemoteFee has been removed.
  Non-anchor channel feerates are bounded indirectly through
  ChannelConfig::max_dust_htlc_exposure (#2696).
• lightning-invoice Descriptions now rely on UntrustedString for
  sanitization (#2730).
• ScoreLookUp::channel_penalty_msat now uses CandidateRouteHop (#2551).
• The EcdsaChannelSigner trait was moved to lightning::sign::ecdsa (#2512).
• SignerProvider::get_destination_script now takes channel_keys_id (#2744)
• SpendableOutputDescriptor::StaticOutput now has channel_keys_id (#2749).
• EcdsaChannelSigner::sign_counterparty_commitment now takes HTLC preimages
  for both inbound and outbound HTLCs (#2753).
• ClaimedHTLC now includes a counterparty_skimmed_fee_msat field (#2715).
• peel_payment_onion was added to decode an encrypted onion for a payment
  without receiving an HTLC. This allows for stateless verification of if a
  theoretical payment would be accepted prior to receipt (#2700).
• create_payment_onion was added to construct an encrypted onion for a
  payment path without sending an HTLC immediately (#2677).
• Various keys used in channels are now wrapped to provide type-safety for
  specific usages of the keys (#2675).
• TaggedHash now includes the raw tag and merkle_root (#2687).
• Offer::is_expired_no_std was added (#2689).
• PaymentPurpose::preimage() was added (#2768).
• temporary_channel_id can now be specified in create_channel (#2699).
• Wire definitions for splicing messages were added (#2544).
• Various lightning-invoice structs now impl Display, now have pub fields,
  or impl From (#2730).
• The Hash trait is now implemented for more structs, incl P2P msgs (#2716).

Performance Improvements

• Memory allocations (though not memory usage) have been substantially reduced,
  meaning less overhead and hopefully less memory fragmentation (#2708, #2779).

Bug Fixes

• Since 0.0.117, calling close_channel* on a channel which has not yet been
  funded would previously result in an infinite loop and hang (#2760).
• Since 0.0.116, sending payments requiring data in the onion for the recipient
  which was too large for the onion may have caused corruption which resulted
  in payment failure (#2752).
• Cooperative channel closure on channels with remaining output HTLCs may have
  spuriously force-closed (#2529).
• In LDK versions 0.0.116 through 0.0.118, in rare cases where skimmed fees are
  present on shutdown the ChannelManager may fail to deserialize (#2735).
• ChannelConfig::max_dust_exposure values which, converted to absolute fees,
  exceeded 2^63 - 1 would result in an overflow and could lead to spurious
  payment failures or channel closures (#2722).
• In cases where LDK is operating with provably-stale state, it panics to
  avoid funds loss. This may not have happened in cases where LDK was behind
  only exactly one state, leading instead to a revoked broadcast and funds
  loss (#2721).
• Fixed a bug where decoding Txids from Bitcoin Core JSON-RPC responses using
  lightning-block-sync would not properly byte-swap the hash. Note that LDK
  does not use this API internally (#2796).

Backwards Compatibility

• ChannelManagers written with LDK 0.0.119 are no longer readable by versions
  of LDK prior to 0.0.113. Users wishing to downgrade to LDK 0.0.112 or before
  can read an 0.0.119-serialized ChannelManager with a version of LDK from
  0.0.113 to 0.0.118, re-serialize it, and then downgrade (#2708).
• Nodes that upgrade to 0.0.119 and subsequently downgrade after receiving a
  payment to a blinded path may leak recipient information if one or more of
  those HTLCs later fails (#2688).
• Similarly, forwarding a blinded HTLC and subsequently downgrading to an LDK
  version prior to 0.0.119 may result in leaking the path information to the
  payment sender (#2540).

In total, this release features 148 files changed, 13780 insertions, 6279
deletions in 280 commits from 22 authors, in alphabetical order:

• Arik Sosman
• Chris Waterson
• Elias Rohrer
• Evan Feenstra
• Gursharan Singh
• Jeffrey Czyz
• John Cantrell
• Lalitmohansharma1
• Matt Corallo
• Matthew Rheaume
• Orbital
• Rachel Malonson
• Valentine Wallace
• Willem Van Lint
• Wilmer Paulino
• alexanderwiederin
• benthecarman
• henghonglee
• jbesraa
• olegkubrakov
• optout
• shaavan