servo/tests/wpt/web-platform-tests/client-hints/resources/stale-echo-client-hints.py

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1.8 KiB
Python

import random
import string
def id_token():
letters = string.ascii_lowercase
return ''.join(random.choice(letters) for i in range(20))
def main(request, response):
client_hint_headers = [
"device-memory",
"dpr",
"width",
"viewport-width",
"rtt",
"downlink",
"ect",
"sec-ch-lang",
"sec-ch-ua",
"sec-ch-ua-arch",
"sec-ch-ua-platform",
"sec-ch-ua-model",
]
client_hints_curr = {i:request.headers.get(i) for i in client_hint_headers}
token = request.GET.first("token", None)
is_query = request.GET.first("query", None) is not None
with request.server.stash.lock:
stash = request.server.stash.take(token)
if stash != None:
(value, client_hints_prev) = stash
count = int(value)
else:
count = 0
client_hints_prev = {}
if is_query:
if count < 2:
request.server.stash.put(token, (count, client_hints_curr))
else:
count = count + 1
request.server.stash.put(token, (count, client_hints_curr))
for header in client_hint_headers:
if client_hints_curr[header] is not None:
response.headers.set(header+"-recieved", client_hints_curr[header])
if (header in client_hints_prev) and (client_hints_prev[header] is not None):
response.headers.set(header+"-previous", client_hints_prev[header])
if is_query:
headers = [("Count", count)]
content = ""
return 200, headers, content
else:
unique_id = id_token()
headers = [("Content-Type", "text/html"),
("Cache-Control", "private, max-age=0, stale-while-revalidate=60"),
("Unique-Id", unique_id)]
content = "report('{}')".format(unique_id)
return 200, headers, content