Manually setting Accept-Encoding on a request

main.go

package main

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

	"github.com/klauspost/compress/gzhttp"
)

func main() {
	http.DefaultClient.Transport = gzhttp.Transport(http.DefaultTransport)

	url, err := url.Parse("https://example.org")
	if err != nil {
		log.Fatal(err)
	}

	req := &http.Request{
		Method: "GET",
		URL:    url,
		Header: http.Header{
			"Accept-Encoding": {"gzip"},
		},
	}

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		log.Fatal(err)
		return
	}

	fmt.Println(io.ReadAll(resp.Body))
}