plex.conf

# Plex Reverse Proxy
# Update the 192.168.1.85 IP to your Plex Server's IP, used in collaboration with letsencrypt, Using swizzin: sudo box install letsencrypt < follow the onscreen guide to create SSL.
location /plex {
    return 301 $scheme://$host/plex/;
}
location ^~ /plex/ {
    rewrite /plex(.*) $1 break;
    proxy_pass http://192.168.1.85:32400;
    proxy_intercept_errors off;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
    
    #sub_filter '</head>' '<link rel="stylesheet" type="text/css" href="https://> sub_filter_once on;
    proxy_set_header X-Plex-Client-Identifier $http_x_plex_client_identifier;
    proxy_set_header X-Plex-Device $http_x_plex_device;
    proxy_set_header X-Plex-Device-Name $http_x_plex_device_name;
    proxy_set_header X-Plex-Platform $http_x_plex_platform;
    proxy_set_header X-Plex-Platform-Version $http_x_plex_platform_version;
    proxy_set_header X-Plex-Product $http_x_plex_product;
    proxy_set_header X-Plex-Token $http_x_plex_token;
    proxy_set_header X-Plex-Version $http_x_plex_version;
    proxy_set_header X-Plex-Nocache $http_x_plex_nocache;
    proxy_set_header X-Plex-Provides $http_x_plex_provides;
    proxy_set_header X-Plex-Device-Vendor $http_x_plex_device_vendor;
    proxy_set_header X-Plex-Model $http_x_plex_model;
    }

if ($http_referer ~* /plex) { rewrite ^/web/(.*)  /plex/web/$1? redirect;
}