Java HttpUrlConnection在本地主机上不工作

这是我的问题：我的

HttpUrlConnection

无法工作

我创建了一个名为poc android的DNS服务器，它通向一个Apache服务器。我的目标是获取有关设备的一些信息，在urlconnection中使用参数调用服务器，并实现一个数据库

这是我的代码，刚刚在“通道配置”之后停止，在测试之后，似乎

OutputStream os=connection.getOutputStream（）和/或
int-responseCode=connection.getResponseCode（）
负责此查询的崩溃（它只是停止，从不进入try块）。但是，当目标服务器是一个已知站点时，如
https://google.com
或
https://youtube.com
，它工作正常，我得到一个响应代码

那么为什么它会在DNS上停止呢

public class HttpQuery {

    public void getData(String id ) throws IOException {
        Log.d("Debug query","passage getData");

         URL url = new URL("https://poc-android");

        Log.d("Debug query","lien : "+ url);
        HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();

            Log.d("Debug query","passage connexion");

            connection.setRequestMethod("POST");
            connection.setRequestProperty("Content-Type", "application/json");
            connection.setRequestProperty("Authorization", "BASIC ...");
            connection.setDoOutput(true);

            Log.d("Debug query","passage configuration");

            String bodyData = "...";
            OutputStream os = connection.getOutputStream();
        Log.d("Debug query", String.valueOf(os));
        os.write(bodyData.getBytes());
        os.flush();
        os.close();

            int responseCode = connection.getResponseCode();
            Log.d("Debug query","Response code is: " + responseCode);

            if (responseCode == HttpsURLConnection.HTTP_OK) {
                this.toResponseResult(connection);
            } else {
                this.toErrorResult(connection);
                System.out.println("Receive error " + responseCode + " when sending request");
            }

            Log.d("Debug query", "fin query");
    }

    private @NotNull String readStream(@NotNull InputStream is) {
        try {
            ByteArrayOutputStream bo = new ByteArrayOutputStream();
            int i = is.read();
            while(i != -1) {
                bo.write(i);
                i = is.read();
            }
            return bo.toString();
        } catch (IOException e) {
            return "";
        }
    }

    public String toResponseResult(@NotNull HttpsURLConnection conn) throws IOException {
        BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
        return this.getResponseDataFromStream(in);
    }

    public String toErrorResult(@NotNull HttpsURLConnection conn) throws IOException {
        BufferedReader in = new BufferedReader(new InputStreamReader(conn.getErrorStream()));
        return this.getResponseDataFromStream(in);
    }

    private @NotNull String getResponseDataFromStream(@NotNull BufferedReader in) throws IOException {
        String inputLine = "";
        StringBuffer response = new StringBuffer();

        while ((inputLine = in.readLine()) != null) {
            response.append(inputLine);
        }

        in.close();
        System.out.println("The content of response is: " + response);

        return response.toString();
    }

}

如果你明白它为什么停了，我就买它。。。
谢谢
 设置读取超时并查看是否超时。