docs: function renderFile(data, hsc, mime) {
  		hsc = hsc || httpStatusCode;
  		mime = mime || MimeType.OCTET_STREAM;
  		res.writeHead(hsc, {
  			"Content-Type": mime,
  			"Set-Cookie": resCookie.print()
  		});
  		// 后面的还不会，还要再研究
  		end();
  	}