nanog mailing list archives

Re: S.Korea broadband firm sues Netflix after traffic surge


From: Jared Brown <nanog-isp () mail com>
Date: Tue, 12 Oct 2021 17:13:39 +0200

Mark Tinka wrote:
Someone can correct me if I'm wrong, but the way I know BitTorrent to
work is the file is downloaded to disk, unarchived and then listed as
ready to watch.
  That's not how it works. Several streaming BitTorrent clients specifically request blocks in order so that you can 
start watching immediately.
  Not that you need a special client, it works pretty well with the standard client as well on a well seeded torrent, 
as blocks are generally requested more or less in order.

It also assumes the device has all the necessary apps
and codecs needed to render the file.
  Well, yes. Or you could just stream content that is guaranteed to be compatible with the device used.

On the other hand, BitTorrent could just make an Apple
TV/PS4/PS5/Xbox/whatever-device-you-use app as well.
  They could, and they might even have, I forget, but there is little demand for such a thing as a centralized CDN 
strategy works better.

But I doubt that
will work, unless someone can think up a clever way to modify BitTorrent
to suit today's network architectures.
  Unless network topology is somehow exposed, this isn't possible. All anybody can do is use latency, IP and ASN 
information as a proxy.

  Nothing is stopping a BitTorrent client from being selective about its peers. The current peer selection algorithm 
optimizes for throughput, not adjecency or topology.


- Jared


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