Serve external images from Go

stream_image.go

package main

import (
	"bytes"
	"io/ioutil"
	"log"
	"net/http"
	"time"
)

func main() {
	http.HandleFunc("/stream", serveImg)
	log.Fatal(http.ListenAndServe(":9531", nil))
}

func serveImg(w http.ResponseWriter, req *http.Request) {
	imgURL := "https://static.independent.co.uk/s3fs-public/thumbnails/imaASDge/2017/09/12/11/naturo-monkey-selfie.jpg?w968"

	resp, err := http.Get(imgURL)
	if err != nil {
		log.Printf("GET: %v", err)
		w.WriteHeader(http.StatusInternalServerError)
		return
	}
	defer resp.Body.Close()

	buf, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		log.Printf("read image: %v", err)
		w.WriteHeader(http.StatusInternalServerError)
		return
	}

	http.ServeContent(w, req, "", time.Time{}, bytes.NewReader(buf))
}