title: how to resume an interrupted download
body: <p>I'm trying to download a large file from my Yahoo! web site server which apparently is setup (not by me) to disconnect downloads if they are not completed within 100 seconds.  The file is small enough to usually successfully transfer.  On the occasions when the data rate is slow and the download gets disconnected, is there a way to resume the URLConnection at the file offset where the disconnection occurred?  Here's the code:</p>
  
  <pre><code>// Setup connection.
  URL url = new URL(strUrl[0]);
  URLConnection cx = url.openConnection();
  cx.connect();
  
  // Setup streams and buffers.
  int lengthFile = cx.getContentLength();
  InputStream input = new BufferedInputStream(url.openStream());
  OutputStream output = new FileOutputStream(strUrl[1]);
  byte data[] = new byte[1024];
  
  // Download file.
  for (total=0; (count=input.read(data, 0, 1024)) != -1; total+=count) {
      publishProgress((int)(total*100/lengthFile));
      output.write(data, 0, count);
      Log.d("AsyncDownloadFile", "bytes: " + total);
  }
  
  // Close streams.
  output.flush();
  output.close();
  input.close();
  </code></pre>