Error -32000 (authentication needed: password or unlock)

[atifzia]

I think there is nothing wrong with the code below as I unlock the account first and then make transaction

package main

import (
	"fmt"
	"github.com/onrik/ethrpc"
	"log"
	"github.com/ethereum/go-ethereum/accounts/keystore"
	"github.com/ethereum/go-ethereum/accounts"
	"math/big"
)

func main() {
	client:=ethrpc.New("http://localhost:8545")
	_, err := client.Web3ClientVersion()
	if err != nil {
		log.Fatal("Error Connecting To Node : ",err)
	}
	ks := keystore.NewKeyStore(
		"/home/atif/.ethereum/rinkeby/keystore/",
		keystore.LightScryptN,
		keystore.LightScryptP)
	var unlockedAccount accounts.Account
	accs:=ks.Accounts()
	if err:=ks.Unlock(accs[1],"abcd");err==nil{
		unlockedAccount=accs[1]
		fmt.Println("Account Unlocked")
	}
	t:=ethrpc.T{
		From:  unlockedAccount.Address.Hex(),
		To:    "0x92dd679e2d8e107d8122ad5b3c868265e77c8af2",
		Gas:    123456,
		GasPrice:big.NewInt(12400000),
		Value:big.NewInt(20000000000),
		Data:"",
		Nonce:0,
	}
	txid, err := client.EthSendTransaction(t)
	if err != nil {
		log.Fatal("Transaction Error => ",err)
	}
	fmt.Println(txid)
}

What I want
txid of Real Transaction
What is get
Transaction Error => Error -32000 (authentication needed: password or unlock)

[onrik]

Looks like account has not been unlocked. Log error on unlocking.

if err := ks.Unlock(accs[1],"abcd"); err!=nil {
  log.Fatal("Unlock account error ", err)
}

unlockedAccount = accs[1]
fmt.Println("Account Unlocked")

[florianakos]

Hello,

I encountered the same issue as the OP.
Even though the err was always NIL referring to successful unlock, it seemed to always fail.
I wonder if it's because unlocking it in a Go program momentarily does not unlock the same account on the machine that's running the geth node?

BR,
Flo