`impl_writeable_tlv_based_enum_upgradable` professed to supporting
upgrades by returning `None` from `MaybeReadable` when unknown
variants written by newer versions of LDK were read. However, it
generally didn't support this as it didn't discard bytes for
unknown types, resulting in corrupt reading.
This is fixed here for enum variants written as a TLV stream,
however we don't have a length prefix for tuple enum variants, so
the documentation on the macro is updated to mention that
downgrades are not supported for tuple variants.
Replace instance of ChannelManager in BackgroundProcessor and in
Persister with AChannelManager. This reduces the number of type
parameters need in those types, which would need to be repeated in an
async version of Persister.
Before a force closure from timed out HTLCs was treated the same as when
the user manually force closed the channel. This leads to various UX
issues. This adds a new `ClosureReason` called `HTLCsTimedOut` that
signifies that the closure was caused because the HTLCs timed out. To go
along with this, previously we'd always send "Channel force-closed" when
force closing the channel in the error message which was ambigous, now
we send the force closure reason so the peer can know why the channel
was closed.
Use OnionMessenger's public interface in tests whenever possible (i.e.,
when not using any intermediate_nodes in an OnionMessagePath. This
allows us to exercise DefaultMessageRouter, and, in particular that a
path can be found for an unannounced sender when its in the introduction
node.
DefaultMessageRouter will form an OnionMessagePath from a BlindedPath
where the sender is the introduction node but only if the sender is
announced. If the sender is unannounced, then DefaultMessageRouter will
fail. While DefaultMessageRouter will only create a blinded path with an
announced introduction node, it may receive one where the introduction
node is unannounced. Don't return an error in this case, as the
OnionMessenger can advance the blinded path by one hop.
This may occur when two nodes have an unannounced channel and one (the
offer creator) wants to use it for payments without an intermediary node
and without putting its node id in the offer.
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>
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.
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.
