Softabar

private String getHttpHeaders(String _url)
  {
    StringBuffer sb = new StringBuffer();
    try
    {
      if(_url.indexOf("://")==-1)
      {
        _url="http://"+_url;
      }
      URL url = new URL(_url);
      URLConnection conn = url.openConnection();
      Map> headers = conn.getHeaderFields();
      Set headerNames = headers.keySet();
      for (String headerName : headerNames)
      {
        List headerValues = headers.get(headerName);
        for (String headerValue : headerValues)
        {
          if (headerName != null)
          {
            sb.append(headerName.toUpperCase());
            sb.append(": ");
            sb.append(headerValue+'\n');
          }
          else
          {
            sb.insert(0,headerValue+'\n');

          }

        }
      }

    }
    catch (Exception e)
    {
      sb.append(e.toString());
      e.printStackTrace();
    }
    return sb.toString();

  }