if color.IsTerminal() {
		ansiEscape("8")
	}
}

// logIgnoreError if true,the error will ignore.
func logIgnoreError(err error) bool {
	return err == nil || errors.Is(err, context.Canceled) || errors.Is(err, http.ErrServerClosed) || err.Error() == "drive not found"

	"errors"
	"net"
	"net/http"
)

func IsUnexpectedListenerError(err error) bool {
	if err == nil {
		return false
	}
	if errors.Is(err, net.ErrClosed) {
		return false
	}
	if errors.Is(err, http.ErrServerClosed) {
		return false
	}
	return true

func (srv *Server) Shutdown() error {
	srv.listenerMutex.Lock()
	if srv.listener == nil {
		srv.listenerMutex.Unlock()
		return http.ErrServerClosed
	}
	srv.listenerMutex.Unlock()

	if atomic.AddUint32(&srv.inShutdown, 1) > 1 {
		// shutdown in progress
		return http.ErrServerClosed
	}

	// Close underneath HTTP listener.
	srv.listenerMutex.Lock()
	err := srv.listener.Close()
	srv.listenerMutex.Unlock()

		go func(hcI *hcInstance, listener net.Listener, httpSrv httpServer) {
			// Serve() will exit and return ErrServerClosed when the http server is closed.
			klog.V(3).InfoS("Starting goroutine for healthcheck", "service", hcI.nsn, "address", listener.Addr())
			if err := httpSrv.Serve(listener); err != nil && err != http.ErrServerClosed {
				klog.ErrorS(err, "Healthcheck closed", "service", hcI.nsn)
				return
			}

		// send signal to various go-routines that they need to quit.
		cancelGlobalContext()

		if httpServer := newHTTPServerFn(); httpServer != nil {
			if err := httpServer.Shutdown(); err != nil && !errors.Is(err, http.ErrServerClosed) {
				shutdownLogIf(context.Background(), err)
			}
		}

		if objAPI := newObjectLayerFn(); objAPI != nil {
			shutdownLogIf(context.Background(), objAPI.Shutdown(context.Background()))
		}

	r.HandleFunc(attrPath, handleAttrs(attrs)).Methods("GET")

	srv := &http.Server{Addr: addr, Handler: r}

	go func() {
		if err := srv.ListenAndServe(); err != http.ErrServerClosed {
			log.Fatalf("listen: %v\n", err)
		}
	}()
	return srv

			// Error from closing listeners, or context timeout:
			log.Printf("HTTP server Shutdown: %v", err)
		}
		close(idleConnsClosed)
	}()

	if err := srv.ListenAndServe(); err != http.ErrServerClosed {
		// Error starting or closing listener:
		log.Fatalf("HTTP server ListenAndServe: %v", err)
	}

	<-idleConnsClosed
}

func ExampleListenAndServeTLS() {