I am currently using:
$this->request->server->get('SERVER_ADDR');
When the application is deployed to the real server, the value returned is 127.0.0.1, which is not correct. It should be the real ip address.
There seem to be a proxy there, since we had problems with getting the client ip address with:
$this->request->server->get('REMOTE_ADDR');
I have fixed that I get client ip address using:
$this->request->getClientIp();
Maybe to get the real server ip address, there is also another more reliable way?