HTTP Proxy

Sometimes it’s handy to use a http proxy like nginx or apache to forward requests to an internal server or Docker container running Group-Office. If you do this then you need to set these headers to make Group-Office operate properly:

• X-Forwarded-Proto : http or https. This is the protocol the proxy server uses.

• X-Forwarded-Host : The hostname of the proxy server.

See for more information:

• nginx: https://linuxize.com/post/nginx-reverse-proxy/

• Apache: https://httpd.apache.org/docs/2.4/mod/mod_proxy.html#x-headers

504 Gateway Time-out

Some requests to Group-Office live for a long time:

• sse.php: Used for server sent events to update changes with a push notification. It lives for 120s

• Microsoft-Server-ActiveSync, For synchronising mobile devices. It may live up to 3600s.