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package main
import (
"context"
"fmt"
"log"
"math/big"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/crypto"
)
func main() {
privateKey, err := crypto.GenerateKey()
if err != nil {
log.Fatal(err)
}
auth := bind.NewKeyedTransactor(privateKey)
balance := new(big.Int)
balance.SetString("10000000000000000000", 10) // 10 eth in wei
address := auth.From
genesisAlloc := map[common.Address]core.GenesisAccount{
address: {
Balance: balance,
},
}
blockGasLimit := uint64(4712388)
client := backends.NewSimulatedBackend(genesisAlloc, blockGasLimit)
fromAddress := auth.From
nonce, err := client.PendingNonceAt(context.Background(), fromAddress)
if err != nil {
log.Fatal(err)
}
value := big.NewInt(1000000000000000000) // in wei (1 eth)
gasLimit := uint64(21000) // in units
gasPrice, err := client.SuggestGasPrice(context.Background())
if err != nil {
log.Fatal(err)
}
toAddress := common.HexToAddress("0x4592d8f8d7b001e72cb26a73e4fa1806a51ac79d")
var data []byte
tx := types.NewTransaction(nonce, toAddress, value, gasLimit, gasPrice, data)
chainID := big.NewInt(1)
signedTx, err := types.SignTx(tx, types.NewEIP155Signer(chainID), privateKey)
if err != nil {
log.Fatal(err)
}
err = client.SendTransaction(context.Background(), signedTx)
if err != nil {
log.Fatal(err)
}
fmt.Printf("tx sent: %s\n", signedTx.Hash().Hex()) // tx sent: 0xec3ceb05642c61d33fa6c951b54080d1953ac8227be81e7b5e4e2cfed69eeb51
client.Commit()
receipt, err := client.TransactionReceipt(context.Background(), signedTx.Hash())
if err != nil {
log.Fatal(err)
}
if receipt == nil {
log.Fatal("receipt is nil. Forgot to commit?")
}
fmt.Printf("status: %v\n", receipt.Status) // status: 1
}
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