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WiDeX Problem Statement

WiDeX Problem Statement. Dean Willis <dean.willis@softarmor.com> Vlad Stirbu <vlad.stirbu@nokia.com> RUI BoF, IETF 63, Paris August 2 nd , 2005. What is Remote UI ?. A mechanism that enables user interfaces to be rendered on other devices than those that have the application logic.

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WiDeX Problem Statement

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  1. WiDeX Problem Statement Dean Willis <dean.willis@softarmor.com> Vlad Stirbu <vlad.stirbu@nokia.com> RUI BoF, IETF 63, Paris August 2nd , 2005 1 IETF 63, Remote UI BoF

  2. What is Remote UI? • A mechanism that enables user interfaces to be rendered on other devices than those that have the application logic. Remote UI Server Remote UI Client UI Semantics Application logic Processed Input Information 2 IETF63, Remote UI BoF

  3. Remote UI Alternatives Now • Framebuffer-level – VNC, RDP, Hot Desk • Server framebuffer is copied across the network to a framebuffer on the client • Graphics-level – X Windows • Drawing request to the graphical device interface (GDI) copied across the network • The client is interpreting these commands and renders in its framebuffer 3 IETF63, Remote UI BoF

  4. Ecosystem: Devices 4 IETF63, Remote UI BoF

  5. Ecosystem: User Interfaces 5 IETF63, Remote UI BoF

  6. Highly Diverse Ecosystem • Physical characteristics • screen size and ratio • color depth • User Interface characteristics • windowing system and widget sets • input methods 6 IETF63, Remote UI BoF

  7. Challenges • How to describe the user interface in terms of widgets? • How to find matches between UI servers and clients? • How to start UI remoting sessions? • How to keep the UI synchronised? Out of Scope 7 IETF63, Remote UI BoF

  8. Some Answers • UI descriptions • W3C markup languages: XHTML, XHTML + SVG, etc. • Discovery session setup • IETF: MMUSIC, ZeroConf 8 IETF63, Remote UI BoF

  9. WiDeX Goal & Scope • Specify an open, platform-independent method for use in an IP-basednetwork to convey initialisation, update and eventing information aboutuser-visible objects, i.e. widgets. • Network “plumbing” • Connectivity. e.g. NATs, firewalls • Security • Reliability • UI remoting management • URI definition • Session-Transaction model • Synchronisation • Events 9 IETF63, Remote UI BoF

  10. WiDeX Requirements & Assumptions • Protocol must have a modular architecture • UI semantic independent • Discovery and session setup mechanism independent • Privacy concerns must be addressed, e.g. P3P • Protocol must support server initiated updates • Full screen updates • Incremental updates • Protocol must support client initiated updates • The protocol must have support for authentication and secure sessions • Existing protocols should be reused when appropriate 10 IETF63, Remote UI BoF

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