We have released SFS2X update 2.20.5 which adds the ability to extract custom http headers for websocket or BlueBox connected clients. This can be useful for gathering statistical data, identifying potential spammers or to consult custom headers when running behind a reverse proxy such as Cloudflare, CloudFront and similar.
You can find more details on the new feature in our docs website.
Also, you can find the full release notes and download the patch from our Updates download section.
