how to redirect http to https in Gorilla Mux?

Start another HTTP handler on the other port in a separate go routine

go http.ListenAndServe(":80", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
    http.Redirect(w, r, "https://"+r.Host+r.URL.String(), http.StatusMovedPermanently)
}))

What I ended up doing was that, I wrote a middleware that redirects HTTP requests to HTTPS

func RedirectToHTTPSRouter(next http.Handler) http.Handler {
    return http.HandlerFunc(func(res http.ResponseWriter, req *http.Request) {
        proto := req.Header.Get("x-forwarded-proto")
        if proto == "http" || proto == "HTTP" {
            http.Redirect(res, req, fmt.Sprintf("https://%s%s", req.Host, req.URL), http.StatusPermanentRedirect)
            return
        }

        next.ServeHTTP(res, req)

    })
}

func main() {

    router := mux.NewRouter()

    httpsRouter := RedirectToHTTPSRouter(router)

    log.Fatal(http.ListenAndServe(lib.Settings.Address, httpsRouter))

}