| import sys |
| |
| def main(request, response): |
| """ |
| Simple handler that sets a response header based on which client hint |
| request headers were received. |
| """ |
| |
| response.headers.append(b"Content-Type", b"text/html; charset=UTF-8") |
| response.headers.append(b"Access-Control-Allow-Origin", b"*") |
| response.headers.append(b"Access-Control-Allow-Headers", b"*") |
| response.headers.append(b"Access-Control-Expose-Headers", b"*") |
| |
| response.headers.append(b"Accept-CH", b"device-memory") |
| |
| critical = b"device-memory" |
| if(request.GET.first(b"mismatch", None) is not None): |
| critical = b"viewport-width" |
| |
| response.headers.append(b"Critical-CH", critical) |
| |
| response.headers.append(b"Cache-Control", b"no-store") |
| |
| result = "FAIL" |
| |
| if b"device-memory" in request.headers: |
| result = "PASS" |
| |
| token = request.GET.first(b"token", None) |
| if(token is not None): |
| with request.server.stash.lock: |
| count = request.server.stash.take(token) |
| if(count == None): |
| count = 1 |
| else: |
| count += 1 |
| request.server.stash.put(token, count) |
| result = str(count) |
| |
| if b"viewport-width" in request.headers: |
| result = "MISMATCH" |
| |
| response.content = "<script>window.postMessage('{0}', '*')</script>".format(result) |
