private InetAddress getBroadcastAddress() throws IOException { WifiManager myWifiManager = (WifiManager) getSystemService(WIFI_SERVICE); DhcpInfo myDhcpInfo = myWifiManager.getDhcpInfo(); if (myDhcpInfo == null) { System.out.println("Could not get broadcast address"); return null; } int broadcast = (myDhcpInfo.ipAddress & myDhcpInfo.netmask) | ~myDhcpInfo.netmask; byte[] quads = new byte[4]; for (int k = 0; k < 4; k++) quads[k] = (byte) ((broadcast >> k * 8) & 0xFF); return InetAddress.getByAddress(quads); }