ens-resolver.go

package main

import (
	"fmt"
	"net/http"

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

func main() {
	r := gin.Default()
	r.GET("/ping", func(c *gin.Context) {
		// Replace SECRET with your own access token for this example to work.
		client, err := ethclient.Dial("https://mainnet.infura.io/v3/e568c670bd77478094e99fa343df8fd8")
		if err != nil {
			panic(err)
		}

		// Resolve a name to an address.
		domain := "prnth.eth"
		address, err := ens.Resolve(client, domain)
		if err != nil {
			panic(err)
		}
		fmt.Printf("Address of %s is %s\n", domain, address.Hex())
		ens.NewResolver(client, domain)
		// Reverse resolve an address to a name.
		resolver, err := ens.NewResolver(client, domain)
		if err != nil {
			panic(err)
		}
		hash, err := resolver.Contenthash()
		if err != nil {
			fmt.Printf("%s has no reverse lookup\n", address.Hex())
		} else {
			fmt.Printf("Name of %v is %v\n", address.Hex(), hash)
		}

		c.JSON(http.StatusOK, gin.H{
			"message": "pong",
		})
	})
	r.Run()
}