J.E. White. Telescript Technology: The Foundation of the Electronic Marketplace. General Magic Inc., 1994.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....of trust. Thus to authenticate a message, a receiver can contact the birthplace of the sending object, and securely obtain the public key of that object, and then authenticate that the message was properly signed using PGP or similar secure signature scheme. This is similar to the Telescript [13], D Agents [6] and IBM Aglets [8] In Aglets, for example, migrating Java code is cryptographically signed and then standard Java security resource mechanisms are enforced. In Mobile Maude the communication to the birthplace must also be carried out using authentication, and thus authentication ....

J. White. Telescript technology: the foundation for the electronic marketplace. General Magic White Paper, General Magic, Inc., 1994.

....The potential benefits are increased flexibility and dynamicity: support for reflexivity, mobile agents, and dynamic construction of agents. This seems to have been acknowledged by the market, as a number of products for sending executable code across a network have recently been released[25, 16]. However, such products rely on traditional message passing models, while we are interested in higher order data combined with generative communication. We distinguish two main issues involved with exchanging higher order data between agents. The first is to manage the links between higher order ....

J. E White. Telescript technology: the foundation for the electronic marketplace. White paper, General Magic Inc., 1994.

....a private site, where the server will send agents for execution. This locality is private in the sense that it is created by the clients (with a newloc) and it is known only to the creator and to all the sites to which it is communicated. This private site is similar to a place in Telescript [53], i.e. a private locality where agents can safely communicate, without interferences from the external world. The code of process RegisterApp, that the client uses to register itself on the server for a specific application, is shown in Listing 11. This process takes the localities where server ....

J. E. White. Telescript Technology: The Foundation for the Electronic Marketplace. White paper, General Magic, Inc., Mountain View, CA, 1994.

....a life cycle model, a computational model, a security model, a communication model and finally a navigation model. Of the mobile agent systems currently available, perhaps five stand out above the rest: Telescript Agents, Ara Agents, D Agents, Tacoma Agents, and Grasshopper Agents. Telescript [Whi94] agents travel within an electronic marketplace. The electronic marketplace is the entirety of all places where a Telescript engine provides services. Telescript agents travel between places with the go instruction; services are used with the meet instruction. Ara [PS97] is a platform for the ....

White, J.E., Telescript Technology: The Foundation of the Electronic Marketplace, General Magic Inc., 1994.

....In contrast, when an application is built using a client and servers, raw data may have to be sent from one site to another if, for example, the client obtains its computing cycles from a different site than it obtains its data. Most current research on agents has focused on language design (e.g. [6]) and application issues (e.g. 4] The TACOMA project (Tromso And COrnell Moving Agents) has, instead, focused on operating system support for agents and how agents can be used to solve problems traditionally addressed by operating systems. We have implemented prototype systems to support ....

....agent, which executes a specified agent locally and then creates a clone of itself at every site that appears in the set difference of the site local SITES folder and the briefcase SITES folder. 3. Obtaining and paying for services Once agents are employed for commerce as some proponents [6] of the metaphor intend support for a negotiable instrument becomes necessary. We, therefore, decided to explore the implementation and use of electronic cash. Electronic cash is nothing more than an unforgeable and untraceable capability that enables its owner to obtain goods and services. By ....

White, J.E. Telescript Technology: The Foundation for the Electronic Marketplace. General Magic White Paper, General Magic Inc., 1994.

....in the presence of run time stacks, caches, and various stateful libraries; reincarnating the state of a process on a machine architecture that di#ers from the one on which the process was running is also known to be a di#cult problem. Nevertheless, strong mobility is supported by Telescript [Whi94] Agent Tcl [Gra95] and Ara [PS97] The convenience to application programmers is a strong attraction. With weak mobility, the programmer of an agent must identify and write code to collect whatever state will be migrated. Java provides an object serialization facility for extracting the state ....

....the system unsuitable for execution on small portable devices and thin clients, such as PDAs and cellular phones. Also, Tacoma does not provide adequate support for disconnected hosts. Since so many have claimed that agents would be ideal for structuring applications that run on these devices [Whi94, HCK95, GCKR00] we built Tacoma lite, a version of Tacoma for devices hosting PalmOS and Windows CE [JJ97] In doing so, we hoped to gain experience structuring distributed applications involving thin clients with mobile agents. The Tacoma lite programming model di#ers from Tacoma in its ....

J. E. White. Telescript technology: The foundation for the electronic marketplace. General Magic white paper, General Magic Inc., CA, 1994.

....to match a particular negotiation protocol. Moreover, it is desirable to move application components close to the information relevant to the transaction, for security reasons for instance. All these problems make mobile code appealing for electronic commerce applications. Actually, Telescript [66] was conceived explicitly to support electronic commerce. 2.1.3 Code Mobility in Java Java has triggered most of the attention and expectations on code mobility. Most of the research work done in the eld today is performed using Java. Apart from systems developed in Java, the Java language ....

J. E. White. Telescript technology: The Foundation for the Electronic Marketplace. White paper, General Magic, Inc., 1994.

....the behavior of the parties involved in order to match a particular negotiation protocol. Moreover, it is desirable to move application components close to the information relevant to the transaction. This problems make mobile code appealing for this kind of applications. Actually, Telescript [64] was conceived explicitly to support electronic commerce. For this reason, the term mobile agent is often related with electronic commerce. Another application of code mobility to electronic commerce can be found in [65] 6ACASE STUDY IN NETWORK MANAGEMENT The purpose of this section is to ....

# J.E. White, "Telescript Technology: The Foundation for the Electronic Marketplace," Technical Report, General Magic, Inc., 1994, white paper.

....language interpreters or compilers used by a system. The execution behavior of language based components is described by the domain specific program. Examples of such constructs include using Java to extend web servers or clients [26] active networks [59] and other mobile code systems [1, 61, 62]. When the same program is used repeatedly, it can be a useful specialization predicate. With the exception of self modifying code, program based specialization predicates are never modified, making them useful for static or dynamic specialization, and avoiding the overheads related to optimistic ....

White, J.E. Telescript technology: The foundation for the electronic marketplace, General Magic, Inc. Mountain View, CA. 1994.

....The way in which data is transferred between nodes will be addressed in the design phase of this project. No assumptions have been made about the middleware s architecture; it may be based on message oriented middleware such as JMS [8] and DyNet [9] mobile agent middleware such as Telescript [10] and Aglets [11] object oriented middleware such as CORBA [12] and RMI [13] or some other technology. In this subsection, we first outline the requirements relating to two message routing models and then go on to discuss community membership and quality of service issues. 2.2.1 Point to ....

White, J. "Telescript Technology: The foundation for the electronic market place", General Magic white paper, 1994.

....has multiple mobile clients and dynamic changes in the client list. We also describe a few possible applications for our mobile server techniques and we simulate one of them to illustrate our algorithm. We use the Common Object Request Broker Architecture (CORBA) 19] and mobile agent technology [16] in developing the application. Sections 1.4 and 1.5 give an overview of these two technologies. 1.4 Mobile Agents An agent can be defined as software that assist people on their behalf and are delegated to perform task(s) and given constraints under which they can operate [20] Different ....

J. E. White. Telescript Technology: The Foundation for the Electronic Marketplace. Technical report, General Magic Inc., Mountain View, CA, 1994.

....code. Like a mobile agent, the code is executed at each active node that the capsule visits as it navigates the network. Thus, to express a new service it is only necessary to construct a new set of capsule types with associated forwarding code that captures the desired processing. Telescript [ White, 1994 ] illustrates the agent model. It allows entities to navigate the network under their own control in order to perform tasks such as electronic commerce on behalf of a particular user. Like most distributed programming systems, Telescript builds on services such as reliable transport and stable ....

....systems, where mobile agents represent ongoing computations that evolve as they migrate through the network, rather than the transfer of inert information. In these systems, language level mechanisms are often provided to control migration. For example, the go directive of Telescript [ White, 1994 ] packages up the state of the current computation, transports the agent across the network, and resumes the computation where it left off. Similarly, in Kali Scheme [ Cejtin et al. 1995 ] a thread of computation can be captured as its continuation and lazily migrated between address spaces and ....

J. E. White. Telescript Technology: The Foundation for the Electronic Marketplace. General Magic, 1994.

.... frgray,gvc,dfk,rusg cs.dartmouth.edu May 29, 1996 1 Overview Agent Tcl is a simple itinerant agent system that runs on Unix workstations and allows the rapid development of complex agents [Gra95, Gra96] Although Agent Tcl currently lacks the features of commercial systems such as Telescript [Whi94] it is an effective platform for experimentation with itinerant agents and for the development of small to medium sized applications. Agent Tcl agents are written in an extended version of the Tool Command Language (Tcl) Tcl Supported by AFOSR contract F49620 93 1 0266 and ONR contract ....

....immediately after the agent jump. In other words, agent jump allows the agent to suspend its execution at an arbitrary point, transport to another machine, and resume execution on the new machine at the exact point at which it left off. This approach to migration is the same as in Telescript [Whi94] but is different than in Tacoma where an agent executes from the beginning on each new machine and must explicitly collect state information [JvRS95] Once an Agent Tcl agent has migrated to a machine, it can access resources and communicate with other agents on that machine. Once it finishes ....

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James E. White. Telescript technology: The foundation for the electronic marketplace. General Magic White Paper, General Magic, Inc., 1994.

....must synchronize their work with the remaining ones. Recently, new paradigms and languages for programming applications for dynamic evolving networks have been proposed that are centered around the notions of location awareness and of mobile agents. A few examples of such languages are Telescript [13], Java [1] Ambients [4] and Klaim [5] In this paper we address the problem of expressing, and constraining, node 2 connectivity. More speci cally, we want to devise suitable linguistic abstractions for managing node connectivity. Thus, we extend the language Klaim, with the notion of clusters ....

White, J. E., Telescript Technology: The Foundation for the Electronic Marketplace, White paper, General Magic, Inc., Mountain View, CA (1994). 11

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J.E. White. Telescript Technology: The Foundation of the Electronic Marketplace. General Magic Inc., 1994.

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J.E. White. Telescript Technology: The Foundation of the Electronic Marketplace. General Magic Inc., 1994.

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J.E. White, "Telescript Technology: the Foundation for the Electronic Marketplace", General Magic White Paper, http://www.genmagic.com, 1994.

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White, J. E., "Telescript Technology: The Foundation for the Electronic Marketplace", General Magic White Paper, General Magic

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J.E.White. Telescript Technology: The Foundation for the Electronic Marketplace. General Magic. 1994

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J. E. White, "Telescript technology: the foundation for the electronic marketplace", White Paper, General Magic, Inc. 1994.

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James E. White. Telescript technology: The foundation for the electronic marketplace. General Magic White Paper, General Magic, Inc., Sunnyvale, California, 1994.

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J.E. White: "Telescript technology: the foundation for the electronic marketplace," White Paper, General Magic Inc., 1994.

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James E. White. Telescript technology: The foundation for the electronic marketplace. General Magic White Paper, General Magic, 1994.

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J. White. Telescript technology: The foundation for the electronic marketplace. Technical report, General Magic, Inc, Sunnyvale, CA, USA, 1995. Whitepaper.

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James E. White. Telescript technology: The foundation for the electronic marketplace. General Magic White Paper, General Magic, Inc., Sunnyvale, California, 1994.

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