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[Transaction] klay_estimateComputationCost

Generates and returns an estimate of how much computation cost will be spent to execute the transaction. Kaia limits the computation cost of a transaction to 100000000 currently not to take too much time by a single transaction. The transaction will not be added to the blockchain like klay_estimateGas

JSONRPC: klay_estimateComputationCost

Request

application/json

Body

params

undefined[]

required

Array [

CallObject

object

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.

BlockNumberOrHashOrTag

object

(optional) A block number, blockhash or the block tag string (latest or earliest). If omitted, latest will be used.

oneOf

IntegerBlockNumber

the block number with type integer

number

HexadecimalBlockNumber

the block number with type hexadecimal

string

BlockTag

the block tag [latest, pending, earliest]

string

BlockHash

the block hash

string

]

Responses

200

Return the amount of computation cost used.

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 hex

The amount of computation cost used.

Example (from schema)

{
  "jsonrpc": "2.0",
  "id": 0,
  "error": {
    "code": -32700,
    "message": "Parse error",
    "data": "string"
  },
  "result": "0x1e8b0ad"
}

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