Reject incoming OpenChannel messages where push_msat exceeds
1000 * funding_satoshis, as required by BOLT-02. The existing RejectPush
flag only gates on push_msat > 0 and does not cover the spec bound.
An over-sized push is eventually caught downstream in reservation.go when
theirBalance = capacity - fee - push_msat goes negative and
ErrFunderBalanceDust is returned. Rejecting it up front produces a
clearer, spec-aligned error and avoids the chanacceptor and commitment
type negotiation round-trips for a channel we will refuse anyway.
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
d5505498c4
