no contract code at given address

[lurenxiao1998]

Hi
Thanks for the owesome module you created.
Recently i have an issue with the example you provide in the readme.
Here is the code snnipet i am using:

package main

import (
	"fmt"

	"github.com/ethereum/go-ethereum/ethclient"
	ens "github.com/wealdtech/go-ens/v3"
)

func main() {
	// Replace SECRET with your own access token for this example to work.
	client, err := ethclient.Dial("https://cloudflare-eth.com")
	if err != nil {
		panic(err)
	}

	// Resolve a name to an address
	domain := "avsa.eth"
	address, err := ens.Resolve(client, domain)
	if err != nil {
		panic(err)
	}
	fmt.Printf("Address of %s is %s\n", domain, address.Hex())

	// Reverse resolve an address to a name
	reverse, err := ens.ReverseResolve(client, address)
	if err != nil {
		panic(err)
	}
	if reverse == "" {
		fmt.Printf("%s has no reverse lookup\n", address.Hex())
	} else {
		fmt.Printf("Name of %s is %s\n", address.Hex(), reverse)
	}
}

However,the program raise the error:

panic: no contract code at given address

goroutine 1 [running]:
main.main()
        /root/go/src/ens/client/main2.go:21 +0x345
exit status 2

The above code worked well in the past several weeks, but failed today.Could you please give some suggestions to fix this problem?
Thank you!

[mcdee]

As far as I am aware https://cloudflare-eth.com is not a valid Ethereum JSON-RPC endpoint, which is why this is failing. Please could you try this with a valid Ethereum JSON-RPC endpoint as per the example?

[lurenxiao1998]

Oh.It works for me when i change https://cloudflare-eth.com to https://mainnet.infura.io/v3.
Thanks a lot!