18

When I call sendRawTransaction, I got

"[Error: invalid argument 0: json: cannot unmarshal hex string without 0x prefix into Go value of type hexutil.Bytes]"

I think all of params have "0x" prefix. Could you share your ideas how to fix it?

I'm using testnet(ropsten).

var Web3 = require('web3');
var web3 = new Web3(new Web3.providers.HttpProvider("http://xxxxxx:xxxx"));

var Tx = require('ethereumjs-tx');
var privateKey = new Buffer('xxx', 'hex')

var rawTx = {
  nonce: '0x00',
  gasPrice: '0x5209', // eth_estimateGas rpc result
  gasLimit: '0x5208', // 21,000 in decimal
  to: '0x8005ceb675d2ff8c989cc95354438b9fab568681',
  value: '0x01'
}

var tx = new Tx(rawTx);
tx.sign(privateKey);

var serializedTx = tx.serialize();

console.log(serializedTx.toString('hex')); // f86180825208825208948005ceb675d2ff8c989cc95354438b9fab56868101801ca096e0cb2e633f07a7ee1f761dba1109c18a44550692305c03c72403ffa0b8fc12a012482fd916fa0a05396fadbf13b39619193e9f80dd5a0fd32086257cc3a11796

web3.eth.sendRawTransaction(serializedTx.toString('hex'), function(err, hash) {
  if (!err) {
    console.log(hash);
  } else {
    console.log(err); // [Error: invalid argument 0: json: cannot unmarshal hex string without 0x prefix into Go value of type hexutil.Bytes]
  }
});

Update 1

It worked after adding '0x' following joël saying.

web3.eth.sendRawTransaction('0x' + serializedTx.toString('hex'), function(err, hash) {

https://ropsten.etherscan.io/tx/0xa94a4a928ac8b84e6f61eabafe59737a7a220ba0fd595aa92217f2a2e0f5d37d

2
  • 3
    Looks like your serializedTx.toString('hex') lacks a 0x though. Try adding one there?
    – Joël
    Jul 16, 2017 at 12:17
  • 1
    @Joël Perhaps write down the answer so that this question can mark it accepted. Thanks
    – eth
    Jul 16, 2017 at 21:38

2 Answers 2

10

As mentioned in the comments, add a 0x to your serializedTx.toString('hex').

0
4

Latest code with web3 1.0 to deploy a contract(don't send to 0x0000000) address

var Tx = require('ethereumjs-tx');
var Web3 = require('web3');
let KOVAN_RPC_URL = 'http://localhost:8549';
let provider = new Web3.providers.HttpProvider(KOVAN_RPC_URL);
let web3 = new Web3(provider);
var privateKey = new Buffer('1927bed0b6839d1e247925232bef7367c1a4508a112b4f1d91f7331d16cc3cab', 'hex');
web3.eth.getTransactionCount('0x040B90762Cee7a87ee4f51e715a302177043835e').then((txcount) => {
    var rawTx = {
      nonce: web3.utils.toHex(txcount),
      // 1 gwei
      gasPrice: web3.utils.toHex(1000000000),
      gasLimit: web3.utils.toHex(6100500),
      data: '0x00'
    }

    var tx = new Tx(rawTx);
    tx.sign(privateKey);

    var serializedTx = tx.serialize();

    web3.eth.sendSignedTransaction('0x' + serializedTx.toString('hex'))
    .on('receipt', console.log);

})

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.