main.go

package main

import (
	"fmt"
	"os"

	"github.com/chenzhijie/go-web3"
	"github.com/chenzhijie/go-web3/utils"
)

func main() {
	// change to your rpc provider
	var rpcProvider = "https://rpc.flashbots.net"
	web3, err := web3.NewWeb3(rpcProvider)
	if err != nil {
		panic(err)
	}

	web3.Eth.SetAccount(os.Getenv("eth_privateKey"))
	blockNumber, err := web3.Eth.GetBlockNumber()
	if err != nil {
		panic(err)
	}
	fmt.Println("Current block number: ", blockNumber)
	fee, err := web3.Eth.EstimateFee()
	if err != nil {
		panic(err)
	}
	util := utils.Utils{}
	fmt.Printf("base fee %v, %.3f Gwei\n", fee.BaseFee, util.FromWeiWithUnit(fee.BaseFee, utils.EtherUnitGWei))
	fmt.Printf("max priority fee per gas %v, %.3f Gwei\n", fee.MaxPriorityFeePerGas, util.FromWeiWithUnit(fee.MaxPriorityFeePerGas, utils.EtherUnitGWei))
	fmt.Printf("max fee per gas %v, %.3f Gwei\n", fee.MaxFeePerGas, util.FromWeiWithUnit(fee.MaxFeePerGas, utils.EtherUnitGWei))

	fmt.Println("current account ", web3.Eth.Address())
	nonce, err := web3.Eth.GetNonce(web3.Eth.Address(), nil)
	if err != nil {
		panic(err)
	}
	receipt, err := web3.Eth.SyncSendEIP1559RawTransaction(
		web3.Eth.Address(),
		util.ToWei("0.01"),
		nonce,
		21000,
		fee.MaxPriorityFeePerGas,
		fee.MaxFeePerGas,
		nil,
	)
	if err != nil {
		panic(err)
	}
	fmt.Printf("eip 1559 tx %v\n", receipt)

}