EOFException and FileNotFoundException in HttpURLConnection getInputStream()

Question

When trying to connect to http://ws.audioscrobbler.com/2.0/ with post data using HttpURLConnection, I get (randomly)

EOFException

or

FileNotFoundException: http://ws.audioscrobbler.com/2.0/

on my Nexus 4 running Android 4.2.2.

Anybody can help?

EDIT

I upgraded to 4.3: same issue.

public InputStream getData(String url_str, List<NameValuePair> postData) {

    Map<String, Object> response = new HashMap<String, Object>();

    InputStream is = null;
    HttpURLConnection conn = null;

    try {

        URL url = new URL(url_str);

        conn = (HttpURLConnection) url.openConnection();
        conn.setReadTimeout(CONNECTION_TIMEOUT);
        conn.setConnectTimeout(READ_TIMEOUT);
        conn.setRequestMethod("POST");
        conn.setDoInput(true);                      

        if(postData != null){

            conn.setDoOutput(true);

            OutputStream os = conn.getOutputStream();
            BufferedWriter writer = new BufferedWriter( new OutputStreamWriter(os, "UTF-8"));
            writer.write(getQuery(postData));
            writer.close();
            os.close();
        }


        // Starts the query

        conn.connect();


        // Get and return response

        is = conn.getInputStream();             

        return is;

    } catch (IOException e) {

        // ...

    } finally {

        if(conn != null){
            conn.disconnect();
        }

        if (is != null) {
            try {
                is.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        } 
    }
}


private String getQuery(List<NameValuePair> params) throws UnsupportedEncodingException
{
    StringBuilder result = new StringBuilder();
    boolean first = true;

    for (NameValuePair pair : params)
    {
        if (first)
            first = false;
        else
            result.append("&");

        result.append(URLEncoder.encode(pair.getName(), "UTF-8"));
        result.append("=");
        result.append(URLEncoder.encode(pair.getValue(), "UTF-8"));
    }

    return result.toString();
}

Answer 1

I checked conn.getResponseCode() and get a 403. The exception might be due to that.