Question

I have 40 MB file in server and i am downloading my file using

HttpURLConnection c = (HttpURLConnection) u.openConnection();
 c.setRequestMethod("GET");
 c.setDoOutput(true);
 c.connect();
 FileOutputStream f = new FileOutputStream(new File("trips.xml"));


 InputStream in = c.getInputStream();

 byte[] buffer = new byte[1024];
 int len1 = 0;
 while ( (len1 = in.read(buffer)) != -1 ) {
  f.write(buffer,0, len1);

this code seems working fine but it is taking too long. is their any way I can make this process faster.

/minhaz

Answer 1

This very ugly hack which might give you a faster download time, or maybe it doesn’t, you’ll have to test it under your conditions:

Start several parallel connections (in separate threads?), and each one should download a different chunk of data (using HTTP 1.1 Range header). Depending on many things like if there’s a full moon, or the sun is out or the roses are blooming you might get better results because it will saturate your link better than a single connection (to the expense of everyone else sharing your link, kinda like what BitTorrent does).