modify estimate gas (#304)

[bytom/vapor.git] / blockchain / txbuilder / estimate.go

diff --git a/blockchain/txbuilder/estimate.go b/blockchain/txbuilder/estimate.go
index 0a0da8a..dd74d8e 100644 (file)
--- a/blockchain/txbuilder/estimate.go
+++ b/blockchain/txbuilder/estimate.go
@@ -47,6 +47,12 @@ func EstimateTxGas(template Template) (*EstimateTxGasInfo, error) {
 
        // the total transaction gas is composed of storage and virtual machines
        totalGas := totalTxSizeGas + totalP2WPKHGas + totalP2WSHGas + flexibleGas
+       if totalGas > consensus.ActiveNetParams.DefaultGasCredit {
+               totalGas -= consensus.ActiveNetParams.DefaultGasCredit
+       } else {
+               totalGas = 0
+       }
+
        return &EstimateTxGasInfo{
                TotalNeu:    totalGas * consensus.ActiveNetParams.VMGasRate,
                FlexibleNeu: flexibleGas * consensus.ActiveNetParams.VMGasRate,