add https support

src/server/server.go

@@ -399,7 +399,7 @@ func Start(dir string) error {
 		}
 	}
 
-	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		path := r.URL.Path
 		lp, ok := routes[path]
 
@@ -457,6 +457,20 @@ func Start(dir string) error {
 		w.Write(data)
 	})
 
-	fmt.Printf("Server is running on http://localhost:%d\n", *config.Port)
-	return http.ListenAndServe(fmt.Sprintf(":%d", *config.Port), nil)
+	addrHTTPS := fmt.Sprintf(":%d", *config.HTTPSPort)
+	addrHTTP := fmt.Sprintf(":%d", *config.Port)
+
+	go func() {
+		http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+			target := "https://" + r.Host + r.RequestURI
+			http.Redirect(w, r, target, http.StatusMovedPermanently)
+		})
+		fmt.Printf("Redirecting HTTP to HTTPS on port %d\n", *config.Port)
+		if err := http.ListenAndServe(addrHTTP, nil); err != nil {
+			fmt.Printf("HTTP redirect server error: %v\n", err)
+		}
+	}()
+
+	fmt.Printf("HTTPS server is running on https://localhost:%d\n", *config.HTTPSPort)
+	return http.ListenAndServeTLS(addrHTTPS, "cert.pem", "key.pem", handler)
 }