Socket socket = new Socket();
socket.connect(new InetSocketAddress(ReceiverIP, 6666), 10000);
DataOutputStream dataOutputStream = new DataOutputStream(socket.getOutputStream());
dataOutputStream.writeUTF(message);
socket.close();

ServerSocket ss=new ServerSocket(6666);
Socket resultSocket=ss.accept();
DataInputStream dis=new DataInputStream(resultSocket.getInputStream());
String stringresult=dis.readUTF();
ss.close();

<uses-permission android:name="android.permission.INTERNET" />
 <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
 <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>