android check whether internet is available or not.

//check whether internet is available or not.
    public boolean isReachable(String address, int port, int timeoutMs) {
        try {
            Socket sock = new Socket();
            SocketAddress sockaddr = new InetSocketAddress(address, port);

            sock.connect(sockaddr, timeoutMs); // this will block no more than timeoutMs
            sock.close();

            return true;

        } catch (IOException e) { return false; }
    }