无法通过UDP发送消息

Question

不幸的是，我无法通过UDP发送简单的字符串消息。代码很简单。我创建了一个SendLocation类，我希望用它发送一个位置消息。我每次尝试时都会得到＆＃34;无法发送它＆＃34;信息。任何的想法？非常感谢！

（messDelay，messCount，ip，port是EditTexts）

private class SendLocation extends Thread {

    private String message = "";
    private volatile boolean flag = true;

    public SendLocation(String message) {
        this.message = message;
    }

    @Override
    public void run() {
        while (flag) {
            try {

                runOnUiThread(new Runnable() {
                    public void run() {
                        Toast.makeText(Server.this, message, Toast.LENGTH_SHORT).show();
                    }
                });

                byte[] data = message.getBytes();

                DatagramSocket socket = new DatagramSocket();
                DatagramPacket packet = new DatagramPacket(data, data.length, InetAddress.getByName(ip.getText().toString()),
                        Integer.valueOf(port.getText().toString()));
                for (int i = 0; i < Integer.valueOf(messCount.getText().toString()); i++) {
                    socket.send(packet);
                    Thread.sleep(Integer.valueOf(messDelay.getText().toString()));
                }
                socket.close();
            } catch (Exception e) {
                runOnUiThread(new Runnable() {
                    public void run() {
                        Toast.makeText(Server.this, "Can't send it", Toast.LENGTH_SHORT).show();
                    }
                });
            }
            flag = false;
        }
    }
}