set $my_x_real_ip "";
if ($http_x_real_ip ~ "^$") {
set $my_x_real_ip $remote_addr;
}
if ($my_x_real_ip ~ "^$") {
set $my_x_real_ip $http_x_real_ip;
}
proxy_set_header X-Real-IP $my_x_real_ip;
set $my_x_real_ip "";
if ($http_x_real_ip ~ "^$") {
set $my_x_real_ip $remote_addr;
}
if ($my_x_real_ip ~ "^$") {
set $my_x_real_ip $http_x_real_ip;
}
proxy_set_header X-Real-IP $my_x_real_ip;