怎么免费获得.top域名

package main

import (
    "fmt"
    "log"
    "net/http"

    "github.com/PuerkitoBio/goquery"
)

func main() {
    res, err := http.Get("https://example.com/promotions")
    if err != nil {
        log.Fatal(err)
    }
    defer res.Body.Close()

    if res.StatusCode != 200 {
        log.Fatalf("status code error: %d %s", res.StatusCode, res.Status)
    }

    doc, err := goquery.NewDocumentFromReader(res.Body)
    if err != nil {
        log.Fatal(err)
    }

    doc.Find(".promotion").Each(func(i int, s *goquery.Selection) {
        title := s.Find("h2").Text()
        link, _ := s.Find("a").Attr("href")
        fmt.Printf("Promotion: %s\nLink: %s\n\n", title, link)
    })
}