While users could easily figure it out based on the set of HTLC
descriptors included within, we already track it within the
`OnchainTxHandler`, so we might as well expose it to users as a
nice-to-have. It's also yet another thing they must get right to ensure
their HTLC transaction broadcasts are valid.
This only applies to all malleable packages on channels pre-dating
anchors and malleables packages for counterparty commitments
post-anchors. Malleables packages for holder commitments post-anchors
should have their transaction locktime applied manually by the consumer
of `BumpTransactionEvent::HTLCResolution` events.
Previously, this would return the earliest height the output could be
confirmed, which seems to no longer be useful. The only use of the
method was to determine whether we should delay a package to a future
block. Instead, we choose to return the absolute locktime the
transaction spending the output should have, which better corresponds to
the method name and still supports the delay functionality mentioned.
Doing so also allows us to expose the locktime required for HTLC
transactions we need to broadcast based on our own commitments for
anchor channels.
`OnceCell` doesn't call `drop`, which makes the spawned
`bitcoind`/`electrsd` instances linger around after our tests have
finished. To fix this, we move them out of `OnceCell` and let every test
that needs them spawn their own instances. This additional let us drop
the `OnceCell` dev dependency.
This is largely motivated by some follow-up work for anchors that will
introduce an event handler for `BumpTransaction` events, which we can
now include in this new top-level `events` module.
...replacing it with an acessor `addresses()`.
Besides removing a redundant data structure already present on inner
`NodeAnnouncement`, this change makes it possible to discover new address types
upon deserialization thanks to `UnsignedNodeAnnouncement`'s implementation.
Since the claim events are stored internally within a HashMap, they will
be yielded in a random order once dispatched. Claim events may be
invalidated if a conflicting claim has confirmed on-chain and we need to
generate a new claim event; the randomized order could result in the
new claim event being handled prior to the previous. To maintain the
order in which the claim events are generated, we track them in a Vec
instead and ensure only one instance of a PackageId only ever exists
within it.
This would have certain performance implications, but since we're
bounded by the total number of HTLCs in a commitment anyway, we're
comfortable with taking the cost.
The previous documentation was slightly incorrect, a `Claim` can also be
from the counterparty if they happened to claim the same exact set of
outputs as a claiming transaction we generated.
Since we don't store `pending_claim_events` within `OnchainTxHandler` as
they'll be regenerated on restarts, we opt to implement `PartialEq`
manually such that the field is not longer considered.
`serde` doesn't bother with MSRVs, so its expected to break
frequently. Yesterday, the `derive` feature had its MSRV broken in
a patch version without care.
Luckily its trivial for us to remove the `serde` dependency in
`lightning-block-sync`, using only `serde_json` for the JSON
deserialization part. It even ends up net-negative on LoC.
If we have a public channel which doesn't yet have six
confirmations the network can't possibly know about it as we cannot
have announced it yet. However, because we refuse to include
route-hints if we have any public channels, we will generate
invoices that no one can pay.
Thus, if we have any public, not-yet-announced channels, include
them as a route-hint.
1.48.0 was released at the end of 2020, nearly 2.5 years ago. It
has been the rustc available on Debian stable since bullseye,
released in 2021. supporting Debian oldstable for more than a year
seems more than sufficient time to give Debian folks to upgrade,
and bullseye is set to become `oldstable` later this year with the
release of `bookworm`, likely this summer.
This also allows us to clean up our MSRV substantially, having a
single MSRV across our crates rather than a number of separate
ones. Sadly, windows already requires 1.49.
