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def main(request, response):
headers = []
if b"headers" in request.GET:
checked_headers = request.GET.first(b"headers").split(b"|")
for header in checked_headers:
if header in request.headers:
headers.append((b"x-request-" + header, request.headers.get(header, b"")))
if b"cors" in request.GET:
if b"Origin" in request.headers:
headers.append((b"Access-Control-Allow-Origin", request.headers.get(b"Origin", b"")))
else:
headers.append((b"Access-Control-Allow-Origin", b"*"))
headers.append((b"Access-Control-Allow-Credentials", b"true"))
headers.append((b"Access-Control-Allow-Methods", b"GET, POST, HEAD"))
exposed_headers = [b"x-request-" + header for header in checked_headers]
headers.append((b"Access-Control-Expose-Headers", b", ".join(exposed_headers)))
if b"allow_headers" in request.GET:
headers.append((b"Access-Control-Allow-Headers", request.GET[b'allow_headers']))
else:
headers.append((b"Access-Control-Allow-Headers", b", ".join(request.headers)))
headers.append((b"content-type", b"text/plain"))
return headers, b""
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