* BOLT12 sending and receiving is now supported as an alpha feature. You may
run into unexpected issues and will need to have a direct connection with
the offer's blinded path introduction points as messages are not yet routed.
We are seeking feedback from early testers (#2578, #2039).
* `ConfirmationTarget` has been rewritten to provide information about the
specific use LDK needs the feerate estimate for, rather than the generic
low-, medium-, and high-priority estimates. This allows LDK users to more
accurately target their feerate estimates (#2660). For those wishing to
retain their existing behavior, see the table below for conversion.
* `ChainHash` is now used in place of `BlockHash` where it represents the
genesis block (#2662).
* `lightning-invoice` payment utilities now take a `Deref` to
`AChannelManager` (#2652).
* `peel_onion` is provided to statelessly decode an `OnionMessage` (#2599).
* `ToSocketAddrs` + `Display` are now impl'd for `SocketAddress` (#2636, #2670)
* `Display` is now implemented for `OutPoint` (#2649).
* `Features::from_be_bytes` is now provided (#2640).
For those moving to the new `ConfirmationTarget`, the new variants in terms of
the old mempool/low/medium/high priorities are as follows:
* `OnChainSweep` = `HighPriority`
* `MaxAllowedNonAnchorChannelRemoteFee` = `max(25 * 250, HighPriority * 10)`
* `MinAllowedAnchorChannelRemoteFee` = `MempoolMinimum`
* `MinAllowedNonAnchorChannelRemoteFee` = `Background - 250`
* `AnchorChannelFee` = `Background`
* `NonAnchorChannelFee` = `Normal`
* `ChannelCloseMinimum` = `Background`
Bug Fixes
=========
* Calling `ChannelManager::close_channel[_with_feerate_and_script]` on a
channel which did not exist would immediately hang holding several key
`ChannelManager`-internal locks (#2657).
* Channel information updates received from a failing HTLC are no longer
applied to our `NetworkGraph`. This prevents a node which we attempted to
route a payment through from being able to learn the sender of the payment.
In some rare cases, this may result in marginally reduced payment success
rates (#2666).
* Anchor outputs are now properly considered when calculating the amount
available to send in HTLCs. This can prevent force-closes in anchor channels
when sending payments which overflow the available balance (#2674).
* A peer that sends an `update_fulfill_htlc` message for a forwarded HTLC,
then reconnects prior to sending a `commitment_signed` (thus retransmitting
their `update_fulfill_htlc`) may result in the channel stalling and being
unable to make progress (#2661).
* In exceedingly rare circumstances, messages intended to be sent to a peer
prior to reconnection can be sent after reconnection. This could result in
undefined channel state and force-closes (#2663).
Backwards Compatibility
=======================
* Creating a blinded path to receive a payment then downgrading to LDK prior to
0.0.117 may result in failure to receive the payment (#2413).
* Calling `ChannelManager::pay_for_offer` or
`ChannelManager::create_refund_builder` may prevent downgrading to LDK prior
to 0.0.118 until the payment times out and has been removed (#2039).
Node Compatibility
==================
* LDK now sends a bogus `channel_reestablish` message to peers when they ask to
resume an unknown channel. This should cause LND nodes to force-close and
broadcast the latest channel state to the chain. In order to trigger this
when we wish to force-close a channel, LDK now disconnects immediately after
sending a channel-closing `error` message. This should result in cooperative
peers also working to confirm the latest commitment transaction when we wish
to force-close (#2658).
Security
========
0.0.118 expands mitigations against transaction cycling attacks to non-anchor
channels, though note that no mitigations which exist today are considered robust
to prevent the class of attacks.
* In order to mitigate against transaction cycling attacks, non-anchor HTLC
transactions are now properly re-signed before broadcasting (#2667).
In total, this release features 61 files changed, 3470 insertions, 1503
deletions in 85 commits from 12 authors, in alphabetical order:
* Antonio Yang
* Elias Rohrer
* Evan Feenstra
* Fedeparma74
* Gursharan Singh
* Jeffrey Czyz
* Matt Corallo
* Sergi Delgado Segura
* Vladimir Fomene
* Wilmer Paulino
* benthecarman
* slanesuke
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projects / rust-lightning / tag