如何直接从nginx获取真实客户IP

Question

I want to get the final real client IP direct from nginx return, and avoid getting the IP of proxy servers.

The articles I have searched are all something like

server /client-ip {
    ...
    proxy_set_header    X-Real-IP        $remote_addr;
    proxy_set_header    X-Forwarded-For  $proxy_add_x_forwarded_for;
    ...
}

But this format is for applications to get IP from request.

How can it directly return the real client IP when the URL is hit? like

server /client-ip {
    ...
    proxy_set_header    X-Real-IP        $remote_addr;
    proxy_set_header    X-Forwarded-For  $proxy_add_x_forwarded_for;
    return "$X-real-ip"
}

But of course, the above format is not working. How can I modify the above format to get final client's IP directly without getting proxy server's IP?

Answer 1

http {
  # …
  server {
    # …
    location /client-ip {
      return 200 $remote_addr;
    }
  }
}