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def main(request, response):
if "clear-vary-value-override-cookie" in request.GET:
response.unset_cookie("vary-value-override")
return "vary cookie cleared"
set_cookie_vary = request.GET.first("set-vary-value-override-cookie",
default="")
if set_cookie_vary:
response.set_cookie("vary-value-override", set_cookie_vary)
return "vary cookie set"
# If there is a vary-value-override cookie set, then use its value
# for the VARY header no matter what the query string is set to. This
# override is necessary to test the case when two URLs are identical
# (including query), but differ by VARY header.
cookie_vary = request.cookies.get("vary-value-override");
if cookie_vary:
response.headers.set("vary", cookie_vary)
else:
# If there is no cookie, then use the query string value, if present.
query_vary = request.GET.first("vary", default="")
if query_vary:
response.headers.set("vary", query_vary)
return "vary response"
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