Global teleporting with Java: toward ubiquitous personalized computing

Wood, Kenneth R.; Richardson, T.; Bennett, Frazer; Harter, Andy; Hopper, Andy

doi:10.1109/2.566154

Cited by 26 publications

(5 citation statements)

References 5 publications

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“…AtransportableXdisplay [38] is a variation on interface code mobility; it moves users' existing interfaces as they move, not unknown applications' interfaces or interface descriptions, It has the ndvnntage that applications need not change at all, but suffers from the limitations that 1) it doesn't support transformations of the interface to formats more suitable to particular client devices, and 2) it does not provide a layer of indirection underneath widget invocntions.…”

Section: Network and Transport Layersmentioning

confidence: 98%

Composable ad-hoc mobile services for universal interaction

Hodes

Servan-Schreiber

Rowe

1997

Proceedings of the 3rd Annual ACM/IEEE International Conference on Mobile Computing and Networking - MobiCom '97

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This paper introduces the notion of "universal interaction," allowing a device to adapt its functionality to exploit services it discovers as it moves into a new environment.Users wish to invoke services -such as controlling the lights, printing locally, or reconfiguring the location of DNS serversfrom their mobile devices. But aptiotistandardizationof interfaces and methods for service invocation is infeasible. Thus, the challenge is to develop a new service architecture that supports heterogeneity in client devices and controlled objects, and which makes minimal assumptions about standard interfaces and control protocols.There are five components to a comprehensive solution to this problem: 1) allowing device mobility, 2) augmenting controllable objects to make them network-accessible, 3) building an underlying discovery architecture, 4) mapping between exported object interfaces and client device controls, and 5) building complex behaviors from underlying composableobjects.We motivate the need for these components by using an example scenario to derive the design requirements for our mobile services architecture. We then present a prototype implementation of elements of the architecture and some example services using it, including controls to audio/visual equipment, extensible mapping, server autoconfiguration, location tracking, and local printer access.

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Section: Network and Transport Layersmentioning

confidence: 98%

Composable ad-hoc mobile services for universal interaction

Hodes

Servan-Schreiber

Rowe

1997

Proceedings of the 3rd Annual ACM/IEEE International Conference on Mobile Computing and Networking - MobiCom '97

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“…This eventually became the VNC applet described in more detail elsewhere. 4 Any Java-capable browser could now provide access to a user's desktop, giving the mobility of the Teleporting system, but on a global scale.…”

Section: Java: Access Through a Browsermentioning

confidence: 99%

Virtual network computing

Richardson

Stafford-Fraser

Wood

et al. 1998

IEEE Internet Comput.

Self Cite

802

396

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T he so-called network computer (NC) aims to give users access to centralized resources from simple, inexpensive devices. These devices act as clients to more powerful server machines that are connected to the network and provide applications, data, and storage for a user's preferences and personal customizations. We have taken this idea a stage further. In the virtual network computing (VNC) system, server machines supply not only applications and data but also an entire desktop environment that can be accessed from any Internet-connected machine using a simple software NC. Whenever and wherever a VNC desktop is accessed, its state and configuration (right down to the position of the cursor) are exactly the same as when it was last accessed.In contrast to many recent Internet applications, which have focused on giving users access to resources located anywhere in the world from their home computing environments, VNC provides access to home computing environments from anywhere in the world. Members of the Olivetti & Oracle Research Laboratory (ORL) use VNC to access their personal Unix and PC desktops from any office in our Cambridge building and from around the world on whatever computing infrastructure happens to be available-including, for example, public Web-browsing terminals in airports. VNC thus provides mobile computing without requiring the user to carry any device whatsoever. In addition, VNC allows a single desktop to be accessed from several places simultaneously, thus supporting appli-VNC is an ultra-thin client system based on a simple display protocol that is platformindependent. It achieves mobile computing without requiring the user to carry any hardware. *Andy Hopper is also affiliated with Cambridge University Engineering Department.cation sharing in the style of computer-supported cooperative work (CSCW).The technology underlying VNC is a simple remotedisplay protocol. It is the simplicity of this protocol that makes VNC so powerful. Unlike other remote display protocols such as the X Window System and Citrix's ICA, the VNC protocol is totally independent of operating system, windowing system, and applications (see the sidebar, "Thin Clients"). The VNC system is freely available for download from the ORL Web site at http://www.orl.co.uk/vnc/.We begin this article by summarizing the evolution of VNC from our work on thin-client architectures. We then describe the structure of the VNC protocol, and conclude by discussing the ways we use VNC technology now and how it may evolve further as new clients and servers are developed.

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“…RAWT's implementation differs from ours in several respects, some of which are detailed in Section 6 when we discuss transparency of applet execution. More remotely related to our work are several prior tools that enable X11 clients to interact with multiple and/or remote displays [1,22], support mobile X11 users [29], and even direct X11 connections across the Internet onto a Java X11-display emulator [32]. All of these tools rely on platform specific X11 server modules.…”

Section: Related Workmentioning

confidence: 99%

Secure execution of Java applets using a remote playground

Malkhi

Reiter²

2000

IIEEE Trans. Software Eng.

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Mobile code presents a number of threats to machines that execute it. We introduce an approach for protecting machines and the resources they hold from mobile code, and describe a system based on our approach for protecting host machines from Java 1.1 applets. In our approach, each Java applet downloaded to the protected domain is rerouted to a dedicated machine (or set of machines), the playground, at which it is executed. Prior to execution the applet is transformed to use the downloading user's web browser as a graphics terminal for its input and output, and so the user has the illusion that the applet is running on her own machine. In reality, however, mobile code runs only in the sanitized environment of the playground, where user files cannot be mounted and from which only limited network connections are accepted by machines in the protected domain. Our playground thus provides a second level of defense against mobile code that circumvents language-based defenses. The paper presents the design and implementation of a playground for Java 1.1 applets, and discusses extensions of it for other forms of mobile code including Java 1.2.

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Global teleporting with Java: toward ubiquitous personalized computing

Cited by 26 publications

References 5 publications

Composable ad-hoc mobile services for universal interaction

Composable ad-hoc mobile services for universal interaction

Virtual network computing

Secure execution of Java applets using a remote playground

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