Headers

For the clickworker to function correctly, it must send the following headers to the user's browser:

access-control-allow-origin: *
access-control-allow-methods: GET, POST, OPTIONS
access-control-allow-headers: X-Requested-With, Cache-Control, Content-Type
accept-ch: Width, Viewport-Width, DPR, Device-Memory, Downlink, RTT, ECT, Save-Data, Sec-CH-UA-Arch, Sec-CH-UA-Bitness, Sec-CH-UA-Mobile, Sec-CH-UA-Model, Sec-CH-UA-Platform, Sec-CH-UA-Platform-Version, Sec-CH-UA, Sec-CH-UA-Full-Version