From 088d9bc42f75368b351fb799617554597f5810ea Mon Sep 17 00:00:00 2001
From: "Johan T. Halseth" <johanth@gmail.com>
Date: Tue, 13 Feb 2018 14:34:44 +0100
Subject: [PATCH] lnwallet: add VSize method for returning size from
 TxWeightEstimator

---
 lnwallet/size.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lnwallet/size.go b/lnwallet/size.go
index d633c390..d6821eac 100644
--- a/lnwallet/size.go
+++ b/lnwallet/size.go
@@ -513,3 +513,9 @@ func (twe *TxWeightEstimator) Weight() int {
 	}
 	return weight
 }
+
+// VSize gets the estimated virtual size of the transactions, in vbytes.
+func (twe *TxWeightEstimator) VSize() int {
+	// A tx's vsize is 1/4 of the weight, rounded up.
+	return (twe.Weight() + witnessScaleFactor - 1) / witnessScaleFactor
+}