private void keepTrying(final Bootstrap b) {
        b.connect().addListener(new ChannelFutureListener() {
            @Override
            public void operationComplete(ChannelFuture cf) throws Exception {
                if(cf.isSuccess()) {
                    System.out.println("Connected successfully");
                } else {
                    Thread.sleep(10*1000);
                    System.out.println("connection attempt failed, econnecting");
                    b.connect().addListener(this);
                }
            }
        });
    }