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9777176d7d
This commit fixes a lingering bug that could at times cause incompatibilities with other implementations when attempting a cooperative channel close. Before this commit, we would use a pointer to the funding txin everywhere. As a result, each time we made a new state, or verified one, we would modify the sequence field of the main txin of the commitment transaction. Due to this if we updated the channel, then went to do a cooperative channel closure, the sequence of the txin would still be set to the value we used as the state hint. To remedy this, we now copy the txin each time when making the commitment transaction, and also the cooperative closure transaction. This avoids accidentally mutating the txin itself. Fixes #502.
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 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