klay_call

Executes a new message call immediately without creating a transaction on the block chain. It returns data or an error object of JSON RPC if error occurs.

Parameters

Name	Type	Description
callObject	Object	The transaction call object. See the next table for the object's properties.
blockNumberOrHash	QUANTITY | TAG | HASH	Integer or hexadecimal block number, or the string "earliest", "latest" or "pending"

callObject has the following properties:

Name	Type	Description
from	20-byte DATA	(optional) The address the transaction is sent from.
to	20-byte DATA	(optional when testing the deployment of a new contract) The address the transaction is directed to.
gas	QUANTITY	(optional) Integer of the gas provided for the transaction execution. klay_call consumes zero gas, but this parameter may be needed by some executions.
gasPrice	QUANTITY	(optional) Integer of the gasPrice used for each paid gas.
value	QUANTITY	(optional) Integer of the value sent with this transaction.
data	DATA	(optional) Hash of the method signature and encoded parameters. Data size is limited to 20KB.

Return Value

Type	Description
DATA	The return value of executed contract.

Example

// Request
curl -H "Content-Type: application/json" --data '{"jsonrpc": "2.0", "method": "klay_call", "params": [{"from": "0x3f71029af4e252b25b9ab999f77182f0cd3bc085", "to": "0x87ac99835e67168d4f9a40580f8f5c33550ba88b", "gas": "0x100000", "gasPrice": "0x5d21dba00", "value": "0x0", "data": "0x8ada066e"}, "latest"], "id": 1}' http://klaytn.blockpi.network/v1/rpc/your-api-key

// Result
{"jsonrpc":"2.0","id":1,"result":"0x000000000000000000000000000000000000000000000000000000000000000a"}