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 (

 func main() {

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

  resp, err := http.Get(originalURL)

  if err != nil {

  // 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!

  See also : Golang : Get final or effective URL with Request.URL example

By Adam Ng(黃武俊)

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