try {
  WifiManager wifiManager = ((ChatActivity)context).getWifiManager();
  InetAddress address = InetAddress.getByAddress(
    ByteBuffer.allocate(4).putInt(
      Integer.reverseBytes(wifiManager.getConnectionInfo().getIpAddress())
    ).array()
  );
  String name = address.getHostName();
  Log.i(Constants.TAG, "address = " + address + " name = " + name);
  jmDns = JmDNS.create(address, name);
} catch (IOException ioException) {
  Log.e(Constants.TAG, "An exception has occurred: " + ioException.getMessage());
  if (Constants.DEBUG) {
    ioException.printStackTrace();
  }
}