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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)
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