Mobile

First answer to the question[^]

Those that do not link to the Android framework (which are probably only a few utility classes) should be reusable for another platform.

• Simple communication using java.net.Socket
  [^]
• Simple Client-Server Application for Android[^]

/**
 * Helper method to send the request to the MAP
 * @param strUrl The url to be invoked
 * @param params The name value pair list containing the parameters to be sent to MAP
 * @return the JSON response
 */
private JSONObject sendRequest(String strUrl, List<NameValuePair> params) throws Exception
{
    String line = null;
    String strCKVal = null;
    HttpPost httppost = null;
    HttpEntity entity = null;
    HttpClient httpclient = null;
    JSONObject json = null;
    InputStream is = null;
    HttpResponse response = null;
    StringBuilder sb = null;
    BufferedReader reader = null;

    try
    {
        httpclient = new DefaultHttpClient();
        httppost = new HttpPost(strUrl);
        httppost.addHeader("UserAgent","Android");
        if (!StringUtils.isEmpty(_strSesId))
            httppost.addHeader("Cookie", _strSesId);

        httppost.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8));
        response = httpclient.execute(httppost);
        entity = response.getEntity();
        is = entity.getContent();
        reader = new BufferedReader(new InputStreamReader(is, "UTF-8"), 8);
        sb = new StringBuilder();
        while ((line = reader.readLine()) != null)
            sb.append(line).append("\n");

        CleanupUtils.doClean(reader);
        CleanupUtils.doClean(is);

        if (sb.length() <= 0)
            throw new Exception("Server did not respond ");

        for (Header h : response.getAllHeaders())
        {
            if ("Set-Cookie".equalsIgnoreCase(h.getName()))
            {
                strCKVal = h.getValue();
                break;
            }
        }

         json = new JSONObject(sb.toString());
        _strSesId = strCKVal;
        return json;
    }
    finally
    {
        CleanupUtils.doClean(reader);
        CleanupUtils.doClean(is);
        if (line != null) line = null;
        if (strCKVal != null) strCKVal = null;
        if (entity != null) entity = null;
        if (httppost != null) httppost = null;
        if (reader != null) reader = null;
        if (is != null) is = null;
        if (response != null) response = null;
        CleanupUtils.doClean(is);
        if (sb  != null)
        {
            sb.delete(0, sb.length());
            sb = null;
        }
        if (httpclient != null) httpclient = null;
    }
}