resume-download

How does one determine if a server supports resuming a file transfer or get request? My thoughts were to set the header to start the get request at byte "2" instead of 0, and immediately closing the http request if that gave the proper result but I was wondering if there was something about the server response for a different kind of probe that would reveal this information to me To probe the download resume feature of a server, you may send a HEAD request to the server supplying a Range header with arbitrary values. If the response code is 206, then resume is supported. Example with curl: $

I'm using the code from this thread to limit my download rate. How do I incorporate partial downloads resuming with the rate limiting code? The examples I've found use urlopen instead of urlretrieve , and the RateLimit class depends on urlretrieve . I'd like to have an external function that controls the partial downloading, without having to change the RateLimit class: from throttle import TokenBucket, RateLimit def retrieve_limit_rate(url, filename, rate_limit): """Fetch the contents of urls""" bucket = TokenBucket(10*rate_limit, rate_limit) print "rate limit = %.1f kB/s" % (rate_limit,)

I'm using urllib2 to make a resuming downloader, roughly based on this method. I can end the program and re-start it, and it starts downloading where it left off, downloading the file that ends up the same size as if it were downloaded all at once. However, I have tested it when disabling and reenabling network, and it doesn't download correctly. The file size ends up longer than the file should be, and the file doesn't work correctly. Is there something I missed, or could this be a urllib2 bug? import urllib2 opener = urllib2.build_opener(); self.count = 0 # Counts downloaded size. self

This code for resuming download is not working properly in Android, although it works fine in a Java application. Here I am trying to download a zip file, and it will resume the download, but the net result is an invalid zip file. BufferedInputStream in = null; FileOutputStream fos = null; BufferedOutputStream bout=null; try { downloaded=0; HttpURLConnection connection = (HttpURLConnection) url.openConnection(); if(ISSUE_DOWNLOAD_STATUS.intValue()==ECMConstant.ECM_DOWNLOADING){ File file=new File(DESTINATION_PATH); if(file.exists()){ downloaded = (int) file.length(); } } connection