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6ffd354d63
Instead of special casing the UpdateFee messages, we instead add them to the update logs like any other HTLC update message. This lets us avoid having to keep an extra set of variables to keep track of the fee updates, and instead reuse the commit/ack logic used for other updates. This fixes a bug where we would reset the pendingFeeUpdate variable after signing our next commitment, which would make us calculate the new fee incorrectly if the remote sent a commitment concurrently. When restoring state logs, we also make sure to re-add any fee updates.
lnwallet
The lnwallet package implements an abstracted wallet controller that is able to drive channel funding workflows, a number of script utilities, witness generation functions for the various Lightning scripts, revocation key derivation, and the commitment update state machine.
The package is used within lnd as the core wallet of the daemon. The wallet
itself is composed of several distinct interfaces that decouple the
implementation of things like signing and blockchain access. This separation
allows new WalletController implementations to be easily dropped into
lnd without disrupting the code base. A series of integration tests at the
interface level are also in place to ensure conformance of the implementation
with the interface.
Installation and Updating
$ go get -u github.com/lightningnetwork/lnd/lnwallet