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chanfunding: support p2tr input fee calculation

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With this commit we support fee calculation in coin selection for p2tr
inputs. We assume that coins in our UTXO selection are only BIP0086
coins. Any other input types with different spend paths won't be
selected by the wallet assembler.
This commit is contained in:
Oliver Gugger 2022-05-10 18:01:14 +02:00
parent 10f7213998
commit 8980471d57
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GPG Key ID: 8E4256593F177720
1 changed files with 5 additions and 0 deletions
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5
lnwallet/chanfunding/coin_select.go
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@ -79,6 +79,11 @@ func calculateFees(utxos []Coin, feeRate chainfee.SatPerKWeight) (btcutil.Amount
case txscript.IsPayToScriptHash(utxo.PkScript):
weightEstimate.AddNestedP2WKHInput()
case txscript.IsPayToTaproot(utxo.PkScript):
weightEstimate.AddTaprootKeySpendInput(
txscript.SigHashDefault,
)
default:
return 0, 0, &errUnsupportedInput{utxo.PkScript}
}