eth_estimateGas

Generates and returns an estimate of how much gas is necessary to allow the transaction to complete. The transaction will not be added to the blockchain. Note that the estimate may be significantly mo

Parameters:

1. Object - The transaction call object

• from: DATA, 20 Bytes - (optional) The address the transaction is sent from.

• to: DATA, 20 Bytes - (optional) The address the transaction is directed to.

• gas: QUANTITY - (optional) Integer of the gas provided for the transaction execution. eth_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. For details see Ethereum Contract ABI in the Solidity documentation(opens in a new tab)↗

If no gas limit is specified geth uses the block gas limit from the pending block as an upper bound. As a result the returned estimate might not be enough to executed the call/transaction when the amount of gas is higher than the pending block gas limit.

Returns:

QUANTITY - the amount of gas used.

Code Examples:

var myHeaders = new Headers();
myHeaders.append("Content-Type", "application/json");

var raw = JSON.stringify({
  "method": "eth_estimateGas",
  "params": [
    {
      "from": "0x8D97689C9818892B700e27F316cc3E41e17fBeb9",
      "to": "0xd3CdA913deB6f67967B99D67aCDFa1712C293601",
      "value": "0x186a0"
    }
  ],
  "id": 1,
  "jsonrpc": "2.0"
});

var requestOptions = {
  method: 'POST',
  headers: myHeaders,
  body: raw,
  redirect: 'follow'
};

fetch("https://api.ebs.ezat.io/core/api/v1.0/rpc/aurora/mainnet?x-api-key-id=API-KEY-ID&x-api-key=API-KEY", requestOptions)
  .then(response => response.text())
  .then(result => console.log(result))
  .catch(error => console.log('error', error));

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0x5208" // 21000
}