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| 1 | +# 0.0.123 - May 08, 2024 - "BOLT12 Dust Sweeping" |
| 2 | + |
| 3 | +## API Updates |
| 4 | + |
| 5 | + * To reduce risk of force-closures and improve HTLC reliability the default |
| 6 | + dust exposure limit has been increased to |
| 7 | + `MaxDustHTLCExposure::FeeRateMultiplier(10_000)`. Users with existing |
| 8 | + channels might want to consider using |
| 9 | + `ChannelManager::update_channel_config` to apply the new default (#3045). |
| 10 | + * `ChainMonitor::archive_fully_resolved_channel_monitors` is now provided to |
| 11 | + remove from memory `ChannelMonitor`s that have been fully resolved on-chain |
| 12 | + and are now not needed. It uses the new `Persist::archive_persisted_channel` |
| 13 | + to inform the storage layer that such a monitor should be archived (#2964). |
| 14 | + * An `OutputSweeper` is now provided which will automatically sweep |
| 15 | + `SpendableOutputDescriptor`s, retrying until the sweep confirms (#2825). |
| 16 | + * After initiating an outbound channel, a peer disconnection no longer results |
| 17 | + in immediate channel closure. Rather, if the peer is reconnected before the |
| 18 | + channel times out LDK will automatically retry opening it (#2725). |
| 19 | + * `PaymentPurpose` now has separate variants for BOLT12 payments, which |
| 20 | + include fields from the `invoice_request` as well as the `OfferId` (#2970). |
| 21 | + * `ChannelDetails` now includes a list of in-flight HTLCs (#2442). |
| 22 | + * `Event::PaymentForwarded` now includes `skimmed_fee_msat` (#2858). |
| 23 | + * The `hashbrown` dependency has been upgraded and the use of `ahash` as the |
| 24 | + no-std hash table hash function has been removed. As a consequence, LDK's |
| 25 | + `Hash{Map,Set}`s no longer feature several constructors when LDK is built |
| 26 | + with no-std; see the `util::hash_tables` module instead. On platforms that |
| 27 | + `getrandom` supports, setting the `possiblyrandom/getrandom` feature flag |
| 28 | + will ensure hash tables are resistant to HashDoS attacks, though the |
| 29 | + `possiblyrandom` crate should detect most common platforms (#2810, #2891). |
| 30 | + * `ChannelMonitor`-originated requests to the `ChannelSigner` can now fail and |
| 31 | + be retried using `ChannelMonitor::signer_unblocked` (#2816). |
| 32 | + * `SpendableOutputDescriptor::to_psbt_input` now includes the `witness_script` |
| 33 | + where available as well as new proprietary data which can be used to |
| 34 | + re-derive some spending keys from the base key (#2761, #3004). |
| 35 | + * `OutPoint::to_channel_id` has been removed in favor of |
| 36 | + `ChannelId::v1_from_funding_outpoint` in preparation for v2 channels with a |
| 37 | + different `ChannelId` derivation scheme (#2797). |
| 38 | + * `PeerManager::get_peer_node_ids` has been replaced with `list_peers` and |
| 39 | + `peer_by_node_id`, which provide more details (#2905). |
| 40 | + * `Bolt11Invoice::get_payee_pub_key` is now provided (#2909). |
| 41 | + * `Default[Message]Router` now take an `entropy_source` argument (#2847). |
| 42 | + * `ClosureReason::HTLCsTimedOut` has been separated out from |
| 43 | + `ClosureReason::HolderForceClosed` as it is the most common case (#2887). |
| 44 | + * `ClosureReason::CooperativeClosure` is now split into |
| 45 | + `{Counterparty,Locally}Initiated` variants (#2863). |
| 46 | + * `Event::ChannelPending::channel_type` is now provided (#2872). |
| 47 | + * `PaymentForwarded::{prev,next}_user_channel_id` are now provided (#2924). |
| 48 | + * Channel init messages have been refactored towards V2 channels (#2871). |
| 49 | + * `BumpTransactionEvent` now contains the channel and counterparty (#2873). |
| 50 | + * `util::scid_utils` is now public, with some trivial utilities to examine |
| 51 | + short channel ids (#2694). |
| 52 | + * `DirectedChannelInfo::{source,target}` are now public (#2870). |
| 53 | + * Bounds in `lightning-background-processor` were simplified by using |
| 54 | + `AChannelManager` (#2963). |
| 55 | + * The `Persist` impl for `KVStore` no longer requires `Sized`, allowing for |
| 56 | + the use of `dyn KVStore` as `Persist` (#2883, #2976). |
| 57 | + * `From<PaymentPreimage>` is now implemented for `PaymentHash` (#2918). |
| 58 | + * `NodeId::from_slice` is now provided (#2942). |
| 59 | + * `ChannelManager` deserialization may now fail with `DangerousValue` when |
| 60 | + LDK's persistence API was violated (#2974). |
| 61 | + |
| 62 | +## Bug Fixes |
| 63 | + * Excess fees on counterparty commitment transactions are now included in the |
| 64 | + dust exposure calculation. This lines behavior up with some cases where |
| 65 | + transaction fees can be burnt, making them effectively dust exposure (#3045). |
| 66 | + * `Future`s used as an `std::...::Future` could grow in size unbounded if it |
| 67 | + was never woken. For those not using async persistence and using the async |
| 68 | + `lightning-background-processor`, this could cause a memory leak in the |
| 69 | + `ChainMonitor` (#2894). |
| 70 | + * Inbound channel requests that fail in |
| 71 | + `ChannelManager::accept_inbound_channel` would previously have stalled from |
| 72 | + the peer's perspective as no `error` message was sent (#2953). |
| 73 | + * Blinded path construction has been tuned to select paths more likely to |
| 74 | + succeed, improving BOLT12 payment reliability (#2911, #2912). |
| 75 | + * After a reorg, `lightning-transaction-sync` could have failed to follow a |
| 76 | + transaction that LDK needed information about (#2946). |
| 77 | + * `RecipientOnionFields`' `custom_tlvs` are now propagated to recipients when |
| 78 | + paying with blinded paths (#2975). |
| 79 | + * `Event::ChannelClosed` is now properly generated and peers are properly |
| 80 | + notified for all channels that as a part of a batch channel open fail to be |
| 81 | + funded (#3029). |
| 82 | + * In cases where user event processing is substantially delayed such that we |
| 83 | + complete multiple round-trips with our peers before a `PaymentSent` event is |
| 84 | + handled and then restart without persisting the `ChannelManager` after having |
| 85 | + persisted a `ChannelMonitor[Update]`, on startup we may have `Err`d trying to |
| 86 | + deserialize the `ChannelManager` (#3021). |
| 87 | + * If a peer has relatively high latency, `PeerManager` may have failed to |
| 88 | + establish a connection (#2993). |
| 89 | + * `ChannelUpdate` messages broadcasted for our own channel closures are now |
| 90 | + slightly more robust (#2731). |
| 91 | + * Deserializing malformed BOLT11 invoices may have resulted in an integer |
| 92 | + overflow panic in debug builds (#3032). |
| 93 | + * In exceedingly rare cases (no cases of this are known), LDK may have created |
| 94 | + an invalid serialization for a `ChannelManager` (#2998). |
| 95 | + * Message processing latency handling BOLT12 payments has been reduced (#2881). |
| 96 | + * Latency in processing `Event::SpendableOutputs` may be reduced (#3033). |
| 97 | + |
| 98 | +## Node Compatibility |
| 99 | + * LDK's blinded paths were inconsistent with other implementations in several |
| 100 | + ways, which have been addressed (#2856, #2936, #2945). |
| 101 | + * LDK's messaging blinded paths now support the latest features which some |
| 102 | + nodes may begin relying on soon (#2961). |
| 103 | + * LDK's BOLT12 structs have been updated to support some last-minute changes to |
| 104 | + the spec (#3017, #3018). |
| 105 | + * CLN v24.02 requires the `gossip_queries` feature for all peers, however LDK |
| 106 | + by default does not set it for those not using a `P2PGossipSync` (e.g. those |
| 107 | + using RGS). This change was reverted in CLN v24.02.2 however for now LDK |
| 108 | + always sets the `gossip_queries` feature. This change is expected to be |
| 109 | + reverted in a future LDK release (#2959). |
| 110 | + |
| 111 | +## Security |
| 112 | +0.0.123 fixes a denial-of-service vulnerability which we believe to be reachable |
| 113 | +from untrusted input when parsing invalid BOLT11 invoices containing non-ASCII |
| 114 | +characters. |
| 115 | + * BOLT11 invoices with non-ASCII characters in the human-readable-part may |
| 116 | + cause an out-of-bounds read attempt leading to a panic (#3054). Note that all |
| 117 | + BOLT11 invoices containing non-ASCII characters are invalid. |
| 118 | + |
| 119 | +In total, this release features 150 files changed, 19307 insertions, 6306 |
| 120 | +deletions in 360 commits since 0.0.121 from 17 authors, in alphabetical order: |
| 121 | + |
| 122 | + * Arik Sosman |
| 123 | + * Duncan Dean |
| 124 | + * Elias Rohrer |
| 125 | + * Evan Feenstra |
| 126 | + * Jeffrey Czyz |
| 127 | + * Keyue Bao |
| 128 | + * Matt Corallo |
| 129 | + * Orbital |
| 130 | + * Sergi Delgado Segura |
| 131 | + * Valentine Wallace |
| 132 | + * Willem Van Lint |
| 133 | + * Wilmer Paulino |
| 134 | + * benthecarman |
| 135 | + * jbesraa |
| 136 | + * olegkubrakov |
| 137 | + * optout |
| 138 | + * shaavan |
| 139 | + |
| 140 | + |
1 | 141 | # 0.0.122 - Apr 09, 2024 - "That Which Is Untested Is Broken"
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2 | 142 |
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3 | 143 | ## Bug Fixes
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