def main(request, _response): response_headers = [("Content-Type", "text/html")] body = "" url = request.GET.first(b"url", b"").decode() if url: response_headers.append(("Refresh", "0; url=" + url)) body += "Refreshing to %s" % url else: body += "Not refreshing" policy = request.GET.first(b"policy", b"").decode() response_headers.append(("Referrer-Policy", policy)) return 200, response_headers, body