Get the required energy through triggerConstantContract.
Parameters
object - The transaction call object, the items in it as below
| Item Name | Data Type | Description |
|---|---|---|
| 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. |
Returns
The amount of energy used.
Example
curl -X POST 'https://api.shasta.trongrid.io/jsonrpc' --data '{
"jsonrpc": "2.0",
"id": 1,
"method": "eth_estimateGas",
"params": [{
"from": "0x41F0CC5A2A84CD0F68ED1667070934542D673ACBD8",
"to": "0x4170082243784DCDF3042034E7B044D6D342A91360",
"gas": "0x01",
"gasPrice": "0x8c",
"value": "0x01",
"data": "0x70a08231000000000000000000000041f0cc5a2a84cd0f68ed1667070934542d673acbd8"
}]
}'
Result
{"jsonrpc":"2.0","id":1,"result":"0x0"}