| def handle_headers(frame, request, response): |
| resource_url = request.GET.first(b"resource-url").decode() |
| link_header_value = "<{}>; rel=preload; as=script".format(resource_url) |
| early_hints = [ |
| (b":status", b"103"), |
| (b"link", link_header_value), |
| ] |
| response.writer.write_raw_header_frame(headers=early_hints, |
| end_headers=True) |
| |
| response.status = 200 |
| response.headers[b"content-type"] = "text/html" |
| if b"x-frame-options" in request.GET: |
| x_frame_options = request.GET.first(b"x-frame-options").decode() |
| response.headers[b"x-frame-options"] = x_frame_options |
| response.write_status_headers() |
| |
| |
| def main(request, response): |
| content = "<!-- empty -->" |
| response.writer.write_data(item=content, last=True) |
