Hands on the Standard Library HTTP in Golang

import "io/ioutil"
import "io"
import "net/http"
import "strings"
import "os"
import "log"

resp, err := http.Get("https://www.apache.org/dyn/closer.lua/spark/spark-3.3.0/spark-3.3.0-bin-hadoop3.tgz")

if err != nil {
    log.Fatal(err)
}

resp

body, err := ioutil.ReadAll(resp.Body)
resp.Body.Close()

resp.StatusCode

if err != nil {
    log.Fatal(err)
}

html := string(body)
html

strings.Index(html, "<strong>")

strings.Index(html, "</strong>")

html[21399:21477]

url := html[21399+8:21477]
url

func httpGetAsString(url string) string {
	resp, err := http.Get(url)
	if err != nil {
		log.Fatal(err)
	}
	body, err := ioutil.ReadAll(resp.Body)
	resp.Body.Close()
	if err != nil {
		log.Fatal(err)
	}
	if resp.StatusCode > 399 {
		log.Fatal("HTTP request got an error response with the status code ", resp.StatusCode)
	}
    return string(body)
}

url := "https://api.github.com/repos/legendu-net/icon/releases/tags/v0.6.0"
httpGetAsString(url)

resp, err := http.Get(url)
if err != nil {
    log.Fatal(err)
}

// Create the file
out, err := os.Create("spark.tgz")
if err != nil {
    log.Fatal(err)
}

// Write the body to file
_, err = io.Copy(out, resp.Body)
err