Question

I’m searching for a best practice to handle errors in an HttpURLConnection especially if the host is not available. How did I have to change my source?:

    protected String doInBackground(String... strings) {
    URL aURL;
    String line;
    HttpURLConnection connection;
    BufferedReader reader;
    StringBuilder stringBuilder = null;
    try {
        aURL = new URL(strings[0]);
        connection = (HttpURLConnection) aURL.openConnection();


        InputStream aInputStream = connection.getInputStream();
        BufferedInputStream aBufferedInputStream = new BufferedInputStream(aInputStream);

        reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
        stringBuilder = new StringBuilder();

        while ((line = reader.readLine()) != null)
        {
            stringBuilder.append(line);
        }

    } catch (IOException e) {
        Log.d("svc", e.toString());
    }
    return stringBuilder.toString();
}

Answer 1

you will get different responsecode using connection.getResponseCode()
Check for the response codes for host not available and you will be set.