eth_estimateGas

参数
Object - transaction对象, 包含的元素如下：

名称	数据类型	描述
from	DATA, 20 Bytes	address of the sender
to	DATA, 20 Bytes	address of the receiver
gas	QUANTITY	unused.
gasPrice	QUANTITY	unused.
value	QUANTITY	Integer of the value sent with this transaction
data	DATA	Hash of the method signature and encoded parameters.

返回值
返回需要消耗的能量值

示例

curl -X POST '47.95.206.44:50545/jsonrpc' --data '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "eth_estimateGas",
    "params": [{
        "from": "0x41F0CC5A2A84CD0F68ED1667070934542D673ACBD8",
        "to": "0x4170082243784DCDF3042034E7B044D6D342A91360",
        "gas": "0x01",
        "gasPrice": "0x8c",
        "value": "0x01",
        "data": "0x70a08231000000000000000000000041f0cc5a2a84cd0f68ed1667070934542d673acbd8"
    }]
}'

结果

{"jsonrpc":"2.0","id":1,"result":"0x0"}