Testing remote access to COG files hosted on AWS S3

cog.go

package main

import (
	"github.com/terrascope/gocog"
	"fmt"
	"image"
	"image/png"
	"net/http"
	"os"
)

func main() {
	deaS3 := "http://dea-public-data.s3-ap-southeast-2.amazonaws.com/S2_MSI_ARD/05S135E-10S140E/S2A_OPER_MSI_ARD_TL_EPA__20170525T110033_A002330_T54LUP_N02.04/NBAR/S2A_OPER_MSI_ARD_TL_EPA__20170525T110033_A002330_T54LUP_NBAR_B01.TIF"

	resp, err := http.Get(deaS3)
	if err != nil {
		fmt.Println("url not found!", err)
		return
	}
	defer resp.Body.Close()

	img, err := gocog.DecodeLevelSubImage(resp.Body, 0, image.Rect(1000, 1000, 1900, 1900))

	if err != nil {
		fmt.Println("error reading file!", err)
		return
	}

	fmt.Println(img.Bounds())
	myfile, _ := os.Create("test.png")
	png.Encode(myfile, img)
}