Duplicate request with `Sec-Fetch-User: ?1` header messes up my request throttling
问题 I have a web site and I have implemented my own request throttling for extra security. The problem is that, from one particular machine, I get duplicate requests, almost identical between them. The two requests are generated with millisecond time-difference between them. The original request is executed when some JavaScript code submits a form programmatically. The only difference between them is that the first request has this header defined: Sec-Fetch-User: ?1 Based on this page, it seems