http_echo

type Request struct {
	Method           string
	URL              *url.URL
	Proto            string
	Header           http.Header
	Body             io.ReadCloser
	ContentLength    int64
	TransferEncoding []string
	Host             string
	Form             url.Values
	PostForm         url.Values
	MultipartForm    *multipart.Form
	Trailer          http.Header
	RemoteAddr       string
	RequestURI       string
	Response         *http.Response
}