27 lines
642 B
Python
27 lines
642 B
Python
"""A page that echoes the Referrer header value via BroadcastChannel.
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"""
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def main(request, response):
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referrer = request.headers.get(b"referer")
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uid = request.GET.first(b"uid")
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if referrer is None:
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referrer = b"(none)"
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html = u'''
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<html>
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<head>
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<title>Echo referrer</title>
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</head>
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<script src="/speculation-rules/prerender/resources/utils.js"></script>
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<body>
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<script>
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const bc = new PrerenderChannel('prerender-channel', '%s');
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bc.postMessage({referrer: '%s'});
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</script>
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</body>
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</html>
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'''
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return (200, [("Content-Type", b"text/html")],
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html % (uid.decode("utf-8"), referrer.decode("utf-8")))
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