Tiham

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DSML-Aided Development for Mobile P2P Systems

• Tihamér Levendovszky
• Tamás Mészáros
• Péter Ekler
• Márk Asztalos

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Outline

• Mobile Peer-to-Peer (BitTorrent)
• Message model
• Protocol model
• BitTorrent messages
• BitTorrent protocol (and event handling)
• Modelling the UI

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BitTorrent
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Mobile Peer-to-Peer

• Increasing capabilities of simple mobile phones
• Find, access and play multimedia content with the
  same device
• Bringing peer-to-peer technology to the player
  device
• MobTorrent 1.1
• 31th of April
• http//amorg.aut.bme.hu/projects/mobtorrent

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Modelling BitTorrent

• Easier to update the model
• Easier to fix bugs
• The protocol can be used for other content
  sharing solutions (more than a simple BitTorrent
  client)
• Easy to build applications on top of the protocol

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Message model

• BitTorrent messages have common structures
• ConstantField this part of the message is
  constant
• SeparateField length is not fixed but it is
  separated by characters
• FixedLengthField length is fixed

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Protocol model

• Handle callbacks
• Handle states
• Handle errors

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BitTorrent messages
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BitTorrent protocol
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Modeling the UI

• Generating UI is extremely important on mobile
  devices
• Common UI elements

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Evaluation
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Summary

• Content sharing is relevant on mobile phones
• BitTorrent is one of the most efficient protocols
• Create general model for BitTorrent
• Easy implementation of applications on top of the
  technology

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Thank You!