Can't get remote IP address from nginx proxy in Java

I am currently facing nginx and playframework issue. I have configured nginx as a reverse proxy in front of my game app.

When I try to read the client ip in java (in game framework), sometimes I can get the correct ip, but sometimes I get "0: 0: 0: 0: 0: 0: 0: 1" or even I get multiple ip addresses type "222.72.xxx.xxx, 10.210.44.35, 115.239.xxx.x".

It seems to be disabled, that it works sometimes, but is often wrong.

here is my nginx.conf config:

http {
    ##
    # Basic Settings
    ##

    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Scheme  $scheme;
    proxy_set_header X-Forwarded-For  $proxy_add_x_forwarded_for;
    proxy_set_header Host  $http_host;
    sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout 65;
    types_hash_max_size 2048;
    # server_tokens off;

    # server_names_hash_bucket_size 64;
    # server_name_in_redirect off;

    upstream webapp {
            server localhost:9000;
            server localhost:9002;
    }

    server {
      listen       80;
      listen       [::]:80;
      server_name  myserver.com;
      return       301 http://www.myserver.com$request_uri;
    }

    server {
      listen       80;
      listen       [::]:80;
      server_name  www.myserver.com;

      location /assets/ {
        root      /home/myuser/apps;
      }

      location /static/ {
        expires   30d;
        root      /home/myuser/apps;
      }

      location / {
        proxy_pass  http://webapp;
      }
      location /apis/ {
        proxy_pass  http://localhost:9001;
      }
    }
...
}

      

        
        
        
      

    

here is some log I pulled from nginx access.log and logged to my java app: access.log:

115.239.xxx.x - - [20/Aug/2014:22:30:29 +0200] "GET /news/article/53f00d5efeb89844977b5477 HTTP/1.1" 499 0 "http://www.myserver.com/news/article/53f00d5efeb89844977b5477" "Mozilla/5.0 (iphone; U; CPU iPhone OS 4_3_5 like Mac OS X; en-US) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5"

      

        
        
        
      

    

Java application log:

2014-08-20 22:30:29,621 INFO  application - Activity  - IP: 222.72.xxx.xxx, 10.210.44.35, 115.239.xxx.x, URL: /news/article/53f00d5efeb89844977b5477, UserAgent: Mozilla/5.0 (iphone; U; CPU iPhone OS 4_3_5 like Mac OS X; en-US) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5

      

        
        
        
      

    

By the way, the server also supports IPV6, so I added IPv6 support to nginx.conf.

Can anyone help me?

Many thanks!

Greetings,

Martin