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Greg Burri, 11/27/2008 02:27 PM



  • Core and GUI are independent. They communicate over TCP socket.
    • It is possible to launch the core without the GUI. The core does not depend of any kind of graphic library.
    • If the GUI crashes then the core remains.
  • Designed for LAN usage (full trusted peers and very high speed transfers).
  • Efficient (very low cpu usage).
  • Distributed download (multi peer downloading and no central server).
    • Quicker peer first. The speed of a peer is an average over a period of time say 5 min. A speed of a peer can be unknown. If a downloading is too slow (like three time slower than the best known peer) then it can switch to a quicker free peer.
    • Rarest parts first.
    • A part can be resumed from any peer.
    • A file from a user is identified by its name and folder.
    • Fixed part size (2^24 B = 16 MB) hashed with SHA-1. Used to control the integrity of parts and to identify each part. If the SHA-1 of a part does not match the given SHA-1 then it will be re-downloaded entirely.
    • Recursive folder downloading.
  • There is a general chat.
  • Multicast UDP for services discovering (maybe UPNP). Each peer announces periodically he is alive with a multicast message.
  • MDI GUI with GTK2HS.
    • A panel to view the current peers.
    • A window to view the current downloads (leechage) and one for the current uploads (seedage).
    • A window for the chat.
    • A window for searching.
    • Some windows for each file browsing.
    • A modal window for the settings.
      • The shared folders.
      • The incoming folders (take the first if enough available space disk otherwise the second and so one..).
      • Bandwidth and CPU limitation with a single option (checkbox).
        • Maybe automatically detect a running game and set this flag.
  • Using of Thrift for definition of the protocol between two peers and between the Core and the Gui.
  • File list with name+size.
  • Non blocking search.
  • Using of systray (optional).
  • Free space management.
  • Graphics of the transfer rate over time.
  • The number of concurrent download is around 3 and the number of concurrent upload is unlimited

Updated by Greg Burri over 15 years ago · 34 revisions