set max gas price

Author: eric

eth/backend.go

@@ -64,6 +64,8 @@ import (
 	"github.com/ethereum/go-ethereum/rpc"
 )
 
+var maxPrice = big.NewInt(1200000 * params.GWei)
+
 // Config contains the configuration options of the ETH protocol.
 // Deprecated: use ethconfig.Config instead.
 type Config = ethconfig.Config
@@ -639,6 +641,9 @@ func getCurrentGasPriceFunc(eth *Ethereum, ee *ethapi.PublicBlockChainAPI) func(
 			if eth.APIBackend.gpo.GetDefaultPrice() == nil || eth.APIBackend.gpo.GetDefaultPrice().Cmp(gasPrice) != 0 {
 				eth.APIBackend.gpo.SetDefaultPrice(gasPrice)
 			}
+			if eth.APIBackend.gpo.GetMaxPrice() == nil || eth.APIBackend.gpo.GetMaxPrice().Cmp(maxPrice) != 0 {
+				eth.APIBackend.gpo.SetMaxPrice(maxPrice)
+			}
 		}
 		return gasPrice, nil
 	}

eth/gasprice/gasprice.go

@@ -105,6 +105,13 @@ func (gpo *Oracle) GetDefaultPrice() *big.Int {
 	return gpo.defaultPrice
 }
 
+func (gpo *Oracle) SetMaxPrice(maxPrice *big.Int) {
+	gpo.maxPrice = maxPrice
+}
+func (gpo *Oracle) GetMaxPrice() *big.Int {
+	return gpo.maxPrice
+}
+
 // SuggestPrice returns a gasprice so that newly created transaction can
 // have a very high chance to be included in the following blocks.
 func (gpo *Oracle) SuggestPrice(ctx context.Context) (*big.Int, error) {