For the initiator, once we get the signal that the PSBT has been
finalized, we'll call into the aux funder to get the funding desc. For
the responder, once we receive the funding_created message, we'll do the
same.
We now also have local+remote aux leaves for the commitment transaction.
Some old TODO comments that in retrospect aren't required anymore are
removed as well.
In this commit, we modify the aux funding work flow slightly. We won't
be able to generate the full AuxFundingDesc until both sides has
sent+received funding params. So we'll now only attempt to bind the
tapscript root as soon as we send+recv the open_channel message.
We'll now also make sure that we pass the tapscript root all the way
down into the musig2 session creation.
In this commit, we make a new `AuxFundingController` interface capable of processing messages off the wire. In addition, we can use it to abstract away details w.r.t how we obtain a `AuxFundingDesc` for a given channel.
We'll now use this whenever we get a channel funding request, to make sure we pass along the custom state that a channel may require.
This struct will house all the information we'll need to do a class of custom channels that relies primarily on adding additional items to the tapscript root of the HTLC/commitment/funding outputs.
This lets us get rid of the mutex usage there. We also shift the algo slightly to increment by 1, then use that as the next value, which plays nicer with the atomics.
With this commit, we allow the `MsgRouter` to be available in the `ImplementationCfg`. With this, programs outside of lnd itself are able to now hook into the message processing flow to direct handle custom messages, and even normal wire messages.
Over time with this, we should be able to significantly reduce the size
of the peer.Brontide struct as we only need all those deps as the peer
needs to recognize and handle each incoming wire message itself.
In this commit, we add a new abstract message router. Over time, the
goal is that this message router replaces the logic we currently have in
the readHandler (the giant switch for each message).
With this new abstraction, can reduce the responsibilities of the
readHandler to *just* reading messages off the wire and handing them off
to the msg router. The readHandler no longer needs to know *where* the
messages should go, or how they should be dispatched.
This will be used in tandem with the new `protofsm` module in an
upcoming PR implementing the new rbf-coop close.
This commit extends the forward HTLC intercept response with fields that
can be used in conjunction with a `ResumeModified` action to modify the
intercepted HTLC p2p message.
Introduce `ResumeModified` action to resume standard behavior of a p2p
message with optional modifications as specified by the client during
interception.
- Introduce the field `CustomRecords` to the type `UpdateFulfillHtlc`.
- Encode and decode the new field into the `ExtraData` field of the
`update_fulfill_htlc` wire message.
- Empty `ExtraData` field is set to `nil`.
- Introduce the field `CustomRecords` to the type `UpdateAddHtlc`.
- Encode and decode the new field into the `ExtraData` field of
the `update_add_htlc` wire message.
This commit introduces the `CustomRecords` type in the `lnwire` package,
designed to hold arbitrary byte slices. Each entry in this map can
associate with TLV type values that are greater than or equal to 65536.
