How to get peer ip address on p2p chat

[Setnov]

Hi guys

I am creating p2p chat app. i want to get the peer ip addresses if it's available. I manage to get local ip address on Fig 1, However i dont know how to get other devices ip address. Could anyone help me what's wrong with Fig 2. Or any idea how to do it?

Thanks

Fig 1

public  String getLocalIpAddress() {
    WifiManager wifiManager = (WifiManager) getApplicationContext().getSystemService(android.content.Context.WIFI_SERVICE);
    WifiInfo wifiInfo = wifiManager.getConnectionInfo();
    int ipAddress = wifiInfo.getIpAddress();
    try {
        return InetAddress.getByName(String.format("%d.%d.%d.%d",
                (ipAddress & 0xff), (ipAddress >> 8 & 0xff),
                (ipAddress >> 16 & 0xff), (ipAddress >> 24 & 0xff))).toString();
    } catch (UnknownHostException e) {
        e.printStackTrace();
    }
    return null;
}

Fig 2

 public String getClientIpAddress() {

WifiManager wifiManager = (WifiManager) connectionSocket.getRemoteSocketAddress(android.content.Context.WIFI_SERVICE);
WifiInfo wifiInfo = wifiManager.getConnectionInfo();
int ipAddress = wifiInfo.getIpAddress();
try {
return InetAddress.getByName(String.format("%d.%d.%d.%d",
                    (ipAddress & 0xff), (ipAddress >> 8 & 0xff),
(ipAddress >> 16 & 0xff), (ipAddress >> 24 & 0xff))).toString();
} catch (UnknownHostException e) {
e.printStackTrace();
}
return null;

 

[Unforgiven]

Development thread moved to the dev area for better exposure.

 

[Deleted User]

Code tags added to improve readability of code

 

[Deleted User]

What happens when this code runs?