Previously, we would track a spending transaction but wouldn't account
for it being reorged out of the chain, in which case we wouldn't monitor
the `WatchedOutput`s until they'd be reloaded on restart.
Here, we keep any `WatchedOutput`s around until their spends are
sufficiently confirmed and only prune them after `ANTI_REORG_DELAY`.
This is useful for users that track channels by `user_channel_id`.
For example, in `lightning-liquidity` we currently keep a full
`HashMap<ChanelId, u128>` around *just* to be able to associate
`PaymentForwarded` events with the channels otherwise tracked by
`user_channel_id`.
When we hit lnd bug 6039, we end up sending error messages to peers
in a loop. This should be fine, but because we used the generic
`PersistenceNotifierGuard::notify_on_drop` lock above the specific
handling, we end up writing `ChannelManager` every time we manage a
round-trip to our peer.
This can add up quite quickly, and isn't actually changing, so we
really need to avoid writing the `ChannelManager` in this case.
This implements the interactive construction protocol described at
78e5a6b066/02-peer-protocol.md (L92).
Our implementation includes a state machine with typed states and transitions
to ensure consumers have compile-time assurances that the protocol is upheld.
States are tracked as in the `StateMachine` enum and can take on all
possible states during the negotiation.
The states are further divided into two categories, namely by the two traits
they implement, either `ReceivedMsgState` or `SentMsgState`.
The defined `StateTransitions` enforce the transitions that `ReceivedMsgState`,
`SentMsgState`, and the `_TxComplete`s can go through.
Co-authored-by: Wilmer Paulino <9447167+wpaulino@users.noreply.github.com>
Co-authored-by: Duncan Dean <git@dunxen.dev>
Co-authored-by: Jurvis Tan <5944973+jurvis@users.noreply.github.com>
`parse_int_be` is generic across integer types and also input
types, but to do so it relies on the `num-traits` crate. There's
not a lot of reason for this now that std has `from_be_bytes`, so
we drop the generic now and replace it with a macro which is called
twice to create two functions, both only supporting conversion from
`u5` arrays.
`lightning-invoice` was mostly written before std's `from_be_bytes`
was stabilized, so used its own `to_int_be` utility to do int
conversions from `u8` arrays. Now that the std option has been
stable for quite some time, we should juse use it instead.
This resolves an issue where offer and refund payments get delayed
while we wait for the `invoice_request`/`invoice` onion messages to
get sent. It further ensures we're likely to have the
`ChannelManager` persisted with the new payment info after
initiating the send/receive.
The `Debug` serialization of `PublicKey`s includes both the X and Y
coordinate, which isn't something most of our users deal with.
Instead, logging using `Display` gives users the keys they're used
to.
Our 1.63 build on Ubuntu has been failing for quite some time
because it runs out of disk space trying to build tests in the last
cfg-flag steps. Thus, we add a few new `cargo clean`s here to fix
it.
If a Refund has an unsupported chain, ChannelManager should not send an
invoice as it can't be paid on that chain. Instead, return an error when
calling ChannelManager::request_refund_payment for such refunds.
In testing, we use channel updates to construct blinded paths and the
{Forward,Receive}Tlvs encoded within. Given a blinded path from node A > B > C,
we currently use channel_update_A->B to construct the payment constraints for
A’s blinded payload.
This is incorrect for setting A's PaymentConstraints::htlc_minimum_msat,
because channel_update_A->B contains the minimum value that *B* will accept,
and we want the constraints to contain the min value that *A* will accept.
This never caused test failures before because min/max htlc values were always
identical in both channel directions.
Therefore, set A’s htlc min/max values to the min/max that A will accept.
SignError allows implementors of SignFunction to return a custom error
type. Drop this as an unconstrained type causes problems with bindings
and isn't useful unless the caller can take some sort of action based on
different errors.
Replace the Fn trait bound on signing methods with a dedicated trait
since Fn is not supported in bindings. Implement the trait for Fn so
that closures can still be used in Rust.
Use the macros introduced in the previous commit to define two builders
for each type parameterization of InvoiceBuilder
- InvoiceWithExplicitSigningPubkeyBuilder
- InvoiceWithDerivedSigningPubkeyBuilder
The difference between these and InvoiceBuilder is that these have
methods that take `self` by mutable reference instead of by value and
don't return anything instead returning the modified builder. This is
required because bindings don't support move semantics nor impl blocks
specific to a certain type parameterization. Because of this, the
builder's contents must be cloned when building a Bolt12Invoice.
Keeps InvoiceBuilder defined so that it can be used internally in
ChannelManager's OffersMessageHandler even when compiled for c_bindings.
We add custom implementations based on comparing the `bytes` for
`Offer`/`Refund` themselves as this is sufficient and should be faster
than comapring all fields in the worst case.
