Method ServeHTTP

web/handler.go:62–168

(w http.ResponseWriter, r *http.Request)

}

func (s *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
	pathname := r.URL.Path
	switch pathname {
	case "/@hmr", "/@refresh", "/@prefresh", "/@vdr":
		s.ServeInternalJS(w, r, pathname[2:])
	case "/@hmr-ws":
		if s.watchData == nil {
			s.watchData = make(map[*websocket.Conn]map[string]int64)
			go s.watchFS()
		}
		s.ServeHmrWS(w, r)
	default:
		filename := filepath.Join(s.config.AppDir, pathname)
		fi, err := os.Lstat(filename)
		if err == nil && fi.IsDir() {
			if pathname != "/" && !strings.HasSuffix(pathname, "/") {
				http.Redirect(w, r, pathname+"/", http.StatusMovedPermanently)
				return
			}
			pathname = strings.TrimSuffix(pathname, "/") + "/index.html"
			filename = filepath.Join(s.config.AppDir, pathname)
			fi, err = os.Lstat(filename)
		}
		if err != nil && os.IsNotExist(err) {
			if s.config.Fallback != "" {
				pathname = "/" + strings.TrimPrefix(s.config.Fallback, "/")
				filename = filepath.Join(s.config.AppDir, pathname)
				fi, err = os.Lstat(filename)
			} else {
				pathname = "/404.html"
				filename = filepath.Join(s.config.AppDir, pathname)
				fi, err = os.Lstat(filename)
				if err != nil && os.IsNotExist(err) {
					pathname = "/index.html"
					filename = filepath.Join(s.config.AppDir, pathname)
					fi, err = os.Lstat(filename)
				}
			}
		}
		if err != nil {
			if os.IsNotExist(err) {
				http.Error(w, "Not Found", 404)
			} else {
				http.Error(w, "Internal Server Error", 500)
			}
			return
		}
		if fi.IsDir() {
			http.Error(w, "Forbidden", http.StatusForbidden)
			return
		}
		query := r.URL.Query()
		if query.Has("url") {
			header := w.Header()
			header.Set("Content-Type", "application/javascript; charset=utf-8")
			header.Set("Cache-Control", "public, max-age=31536000, immutable")
			w.Write([]byte(`const url = new URL(import.meta.url);url.searchParams.delete("url");export default url.href;`))
			return