View difference between Paste ID: 3T1aw1xC and giq57K3H

 package main
 
 import(
   "io"
   "net/http"
   "io/ioutil"
   "strings"
   "os"
-  "os/exec"
+
 )
 
 func ServeFile(w http.ResponseWriter, req *http.Request) {
   w.Header().Set("Strict-Transport-Security","max-age=315360000")
   address := req.Host
   parts := strings.Split(address,".")
   subdomain := parts[0]
   if subdomain == "www" && address !="www.domain.tld" {
     parts[0] = ""
     //io.WriteString(w,strings.Join(parts,"."))
     http.Redirect(w,req,"https://" + strings.TrimLeft(strings.Join(parts,".") + req.RequestURI,"."),http.StatusMovedPermanently)
   } else {
     if address == "domain.tld" {
       subdomain = "www"
     }
     path := "html/" + subdomain + req.RequestURI
     stat, err := os.Stat(path)
     if err==nil {
       if stat.IsDir() {
         if !strings.HasSuffix(path,"/") {
           path = path + "/"
         }
         stat,err := os.Stat(path + "index.gparse")
         if err==nil {
           path = path + "index.gparse"
         } else {
           path = path + "index.html"
         }
       }
       if strings.HasSuffix(path,".gparse") {
         //need that code here
       } else {
         content, err := ioutil.ReadFile(path)
         if err != nil {
           fmt.Println(err)
         } else {
   	      //io.WriteString(w,req.Host)
           io.WriteString(w,string(content))
         }
       }
     } else {
       w.WriteHeader(http.StatusNotFound)
       io.WriteString(w,"404 Not found! You are at: " + req.Host)
     }
   }
 }
 
 func RedToHttps(w http.ResponseWriter, req *http.Request) {
   http.Redirect(w,req,"https://" + req.Host + req.RequestURI, http.StatusMovedPermanently)
 }
 
 func main() {
   http.HandleFunc("/",ServeFile)
   go http.ListenAndServeTLS(":443","cert.pem","privkey.pem",nil)
   http.ListenAndServe(":80",http.HandlerFunc(RedToHttps))
 }