Xibo 1.8.10 client behind reverse proxy media not downloading

I do not understand what you mean by “adding” the proxy_set_header… it is in the current configuration. Should I take it out ?

I’ve tried doing that many time but it just made the display’s status change from the x to the cloud and back to the x. I can’t figure out when one is there over the other and why.

I found this little piece SENDFILE_MODE missing from Settings and after doing SENDFILE_MODE off the files started downloading.
What does this setting do and will it break something else ?