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[Transaction] 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.

If you deployed a contract, use klay_getTransactionReceipt to get the contract address.

NOTE In versions earlier than Kaia v1.7.0, only integer block number, the string "earliest" and "latest" are available.

JSONRPC: klay_call

Request

application/json

Body

params

object[]

required

Array [

anyOf

CallObject

The transaction call object. See the next table for the object's properties.

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 hex

(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 hex

(optional) Integer of the gasPrice used for each paid gas.

value hex

(optional) Integer of the value sent with this transaction.

input DATA

(optional) Hash of the method signature and encoded parameters. It replaces data field, but 'data` field is still supported for backward compatibility.

]

Responses

200

Return value of executed contract or returns an error object of JSON RPC if anything goes wrong

application/json

Schema

Schema

error

object

code int64required

A Number that indicates the error type that occurred. This MUST be an integer.

code	message	description
-32700	Parse error	invalid JSON was received by the server. An error occurred on the server while parsing the JSON text.
-32602	Invalid params	Invalid method parameter(s).

message string

A String providing a short description of the error. The message SHOULD be limited to a concise single sentence.

data string

A Primitive or Structured value that contains additional information about the error. This may be omitted. The value of this member is defined by the Server (e.g. detailed error information, nested errors etc.).

result DATA

The return value of executed contract.

Example (from schema)

{
  "jsonrpc": "2.0",
  "id": 0,
  "error": {
    "code": -32700,
    "message": "Parse error",
    "data": "string"
  },
  "result": "0x000000000000000000000000000000000000000000000000000000000000000a"
}

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