return userCode;
        }
        return null;
    }

    public void deleteUserCodeFromCookie(final HttpServletRequest request) {
        final String cookieValue = getUserCodeFromCookie(request);
        if (cookieValue != null) {
            updateCookie(StringUtil.EMPTY, 0);
        }
    }

    protected String getUserCodeFromRequest(final HttpServletRequest request) {

      val cookieName = setCookie.trimSubstring(endIndex = pairEqualsSign)
      if (cookieName.isEmpty() || cookieName.indexOfControlOrNonAscii() != -1) return null

      val cookieValue = setCookie.trimSubstring(pairEqualsSign + 1, cookiePairEnd)
      if (cookieValue.indexOfControlOrNonAscii() != -1) return null

      var expiresAt = MAX_DATE
      var deltaSeconds = -1L
      var domain: String? = null
      var path: String? = null

	res.Header.Add("Set-Cookie", `quoted1="cookieValue"; max-age=31`)
	res.Header.Add("Set-Cookie", `quoted2=cookieAV; max-age="32"`)
	res.Header.Add("Set-Cookie", `quoted3="both"; max-age="33"`)
	got := res.Cookies()
	want := []*Cookie{
		{Name: "quoted0", Value: "none", MaxAge: 30},
		{Name: "quoted1", Value: "cookieValue", MaxAge: 31},
		{Name: "quoted2", Value: "cookieAV"},