add https listen and serve

rest/internal/starter.go

@@ -12,26 +12,21 @@ import (
 func StartHttp(host string, port int, handler http.Handler) error {
 	addr := fmt.Sprintf("%s:%d", host, port)
 	server := buildHttpServer(addr, handler)
-	return StartServer(server)
+	gracefulOnShutdown(server)
+	return server.ListenAndServe()
 }
 
 func StartHttps(host string, port int, certFile, keyFile string, handler http.Handler) error {
 	addr := fmt.Sprintf("%s:%d", host, port)
 	if server, err := buildHttpsServer(addr, handler, certFile, keyFile); err != nil {
 		return err
 	} else {
-		return StartServer(server)
+		gracefulOnShutdown(server)
+		// certFile and keyFile are set in buildHttpsServer
+		return server.ListenAndServeTLS("", "")
 	}
 }
 
-func StartServer(srv *http.Server) error {
-	proc.AddWrapUpListener(func() {
-		srv.Shutdown(context.Background())
-	})
-
-	return srv.ListenAndServe()
-}
-
 func buildHttpServer(addr string, handler http.Handler) *http.Server {
 	return &http.Server{Addr: addr, Handler: handler}
 }
@@ -49,3 +44,9 @@ func buildHttpsServer(addr string, handler http.Handler, certFile, keyFile strin
 		TLSConfig: &config,
 	}, nil
 }
+
+func gracefulOnShutdown(srv *http.Server) {
+	proc.AddWrapUpListener(func() {
+		srv.Shutdown(context.Background())
+	})
+}