Golang : How to check if a website is served via HTTPS

Just a short program to check if a website has redirect to HTTPS(SSL) or not. What this program does is to find the final URL of a given URL and then check to see if the final URL has https or not.

It does not check if the connection is secured with a proper certificate or expired certificate.

Here you go!

 package main

 import (
  "fmt"
  "net/http"
  "strings"
 )

 func main() {

  // test websites
  //originalURL := "http://socketloop.com"
  //originalURL := "http://geocities.com"  -- no https
  originalURL := "http://cowner.net"  // -- no https


  resp, err := http.Get(originalURL)

  if err != nil {
 fmt.Println(err)
  }

  // if there is any re-direction happening behind the scene
  // the finalURL will be different
  // in this case, there will be a re-direction to https (SSL) version

  finalURL := resp.Request.URL.String()

  fmt.Println("Original URL is : ", originalURL)
  fmt.Println("Final URL is : ", finalURL)

  // Check if served with https 
  fmt.Println("Is HTTPS ? : ", strings.HasPrefix(finalURL,"https"))

 }

Hope this helps and happy coding!