Re: Potential DoS on Bittorrent

From: anthonyberet (nospam_at_me.invalid)
Date: 08/28/05

  • Next message: anthonyberet: "Re: Potential DoS on Bittorrent" 
    Date: Sun, 28 Aug 2005 10:12:41 +0100

    Skybuck Flying wrote:
    > "Andrew Swallow" <am.swallow@btopenworld.com> wrote in message
    > news:d30dsp$8kn$1@titan.btinternet.com...
    >
    >>Skybuck Flying wrote:
    >>[snip]
    >>
    >>>Good point.
    >>>
    >>>Question:
    >>>
    >>>Why are sub pieces downloaded from multiple clients ? Why not simply one
    >>>client ?
    >>>
    >>>That would solve it.
    >>>
    >>
    >>ISP supply users with different transmission and reception speeds. The
    >>general public can receive download much faster than they can send.
    >>Several clients are needed to receive at top speed.
    >
    >
    > Clients can download multiple pieces at the same time this should be enough
    > to receive at top speed so why split the pieces further into sub pieces ?
    >
    > I think in the end splitting it into sub pieces is probably inefficient:
    >
    > 1. more protocol overhead for sub piece information/negotiation ?
    > 2. tcp needs some time to get at top speed... having to restart all the time
    > doesnt seem that wise ;)
    >
    > What are benefits for sub pieces ?
    >
    > 1. Maybe faster switching to different clients etc. Not necessarly faster
    > sharing since a complete piece has to be received first to check if the
    > piece was received correctly... unless one doesnt care about that and simply
    > uploads possible corrupted sub pieces etc ;)
    >
    Don't forget the size of the pieces in a torrent can be defined when
    generating the .torrent file.

  • Next message: anthonyberet: "Re: Potential DoS on Bittorrent"

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