WiFi direct Ip address

Question

Do the Wifi-Direct Ip_address and Ip address given by any WIFI router to the smart-phone same? I am below code to get my IP address.

public String getP2PIpAddr() {
   WifiManager wifiManager = (WifiManager) getSystemService(WIFI_P2P_SERVICE);
   WifiInfo wifiInfo = wifiManager.getConnectionInfo();
   int ip = wifiInfo.getIpAddress();

   String ipString = String.format(
   "%d.%d.%d.%d",
   (ip & 0xff),
   (ip >> 8 & 0xff),
   (ip >> 16 & 0xff),
   (ip >> 24 & 0xff));

   return ipString;
}

but its giving me 0.0.0.0 when i am not connected to any wifi router.But it is returning me IP address given by router to phone but not the wifi-direct IPAddress..

Please Help...

Thanks In advance..

Answer 1

No the IP addresses are not the same. You are making mistakes here, getSystemService(WIFI_P2P_SERVICE) returns WifiP2pManager not WifiManager.

Secondly You use wifiManager.getConnectionInfo() when you are connected to a normal Wifi network i.e. via a router or hotspot. You do not get IP when connected via WifiDirect like this as it is not a normal wifi network. Thus, the reason you are getting IP as 0.0.0.0.

Now the main the question what are the IPs in WifiDirect. If you are a GroupOwner you have fixed GO_IP = 192.168.43.1. So, in onConnectionInfoAvailable or onGroupInfoAvailable, you can do info.isGroupOwner() and if you are not the groupOwner then the other system is, hence his IP is GO_IP, then this system can communicate to the GO using GO_IP

Now if GO wants to communicate with client, he can get his IP using NetworkInterfaces. Refer this how to get the client IP.

I think this all should solve your problem.