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lnwallet: for musig2 coop close fee estimation

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Co-op close for musig2 chans needs to use the proper witness size.
This commit is contained in:
Olaoluwa Osuntokun 2023-08-17 16:09:56 -07:00
parent a2b277cf1d
commit 4b65c71213
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GPG Key ID: 3BBD59E99B280306
1 changed files with 10 additions and 3 deletions
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13
lnwallet/chancloser/chancloser.go
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@ -201,12 +201,19 @@ type ChanCloser struct {
// calcCoopCloseFee computes an "ideal" absolute co-op close fee given the
// delivery scripts of both parties and our ideal fee rate.
func calcCoopCloseFee(localOutput, remoteOutput *wire.TxOut,
func calcCoopCloseFee(chanType channeldb.ChannelType,
localOutput, remoteOutput *wire.TxOut,
idealFeeRate chainfee.SatPerKWeight) btcutil.Amount {
var weightEstimator input.TxWeightEstimator
weightEstimator.AddWitnessInput(input.MultiSigWitnessSize)
if chanType.IsTaproot() {
weightEstimator.AddWitnessInput(
input.TaprootSignatureWitnessSize,
)
} else {
weightEstimator.AddWitnessInput(input.MultiSigWitnessSize)
}
// One of these outputs might be dust, so we'll skip adding it to our
// mock transaction, so the fees are more accurate.
@ -235,7 +242,7 @@ func (d *SimpleCoopFeeEstimator) EstimateFee(chanType channeldb.ChannelType,
localTxOut, remoteTxOut *wire.TxOut,
idealFeeRate chainfee.SatPerKWeight) btcutil.Amount {
return calcCoopCloseFee(localTxOut, remoteTxOut, idealFeeRate)
return calcCoopCloseFee(chanType, localTxOut, remoteTxOut, idealFeeRate)
}
// NewChanCloser creates a new instance of the channel closure given the passed