Programming of Interactive Systems
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1 Programming of Interactive Systems Introduction and overview Fredrik Kilander Spring 2011
2 Today s lecture Participants Practical matters Overview of the course
3 Participants Fredrik Kilander (course admin, lecturer)
4 Practical matters kth.se/social course: Programmering av interaktiva system Daisy: Web: Student council Not First Class at DSV
5 Overview Lectures: F2: Distributed systems and their properties F3: Design of distributed systems + asg. TAG F4: Introduction to networking, threading and synchronization in Java F5: Programming tools and tricks of the trade + asg. CHAT F6: Agent programming techniques F7: A review of the article collection F8: Course wrap and Q&A
6 Overview Examination Assignment examination (groups of two) Closed literature examination (tenta)
7 Overview Assignment CHAT Extend a chat system written in Java/Jini Choose from a menu of tasks Assignment TAG Implement the game of Tag for mobile agents Review, design and extend code samples into a working demonstration
8 Overview Assignment 2 (advanced): TAG viewer Implement the game of Tag for mobile agents Implement a viewer that visually portrays the agents and their game state
9 Game of tag for mobile agents JVM Bailiff Agent JVM Bailiff Agent Agent Bailiffs and agents are Java classes running in their own threads. Each Bailiff is a service, offering object execution. Agents are clients.
10 Game of tag for mobile agents JVM Bailiff Agent JVM Bailiff Agent Agent Viewer Viewer The viewer graphically displays the presence and state of the agents in the Bailiff. Possible states: it, happy, afraid, bored, sleeping, fleeing, thinking
11 Overview Labs are executed in groups of two Choose your own groups in Daisy At other times use kth.se/social or
12 Examination Each assignment is presented with: An oral presentation A written report (2-3 pages) A working demonstration Written closed exam on the literature
13 Overview Literature and articles: D. Reilly, M. Reilly (2002): Java network programming and distributed computing Waldo et al (1994): A note on distributed computing Jennings (1999): On agent-based software engineering Jennings (2001): An agent-based approach for building complex software systems Muir (2004): The seven deadly sins of distributed systems
14 Java network programming... Chapter 1 - Networking theory The layered network view Internet architecture Internet application protocols Firewalls and proxies
15 Java network programming... Chapter 2 - Java overview Java networking considerations Applications of Java network programming Exceptions
16 Java network programming... Chapter 3 - Internet addressing Local area network addresses (MAC) Internet protocol (IP) addresses The domain name system
17 Java network programming... Chapter 4 - Data streams The java.io class Object persistence Object serialization
18 Java network programming... Chapter 5 - User datagram protocol java.net.datagrampacket java.net.datagramsocket Building a UDP Client/Server
19 Java network programming... Chapter 6 - Transmission control protocol Advantages of TCP over UDP TCP and the client/server paradigm java.net.socket java.net.serversocket Creating a TCP client Creating a TCP server Exception handling
20 Java network programming... Chapter 7 - Multi-threaded applications Multi-threading in Java Synchronization Interthread communication Thread priorities
21 Java network programming... Chapter 8 - Implementing application protocols Application protocol specifications Application protocol implementation SMTP POP3 HTTP
22 Java network programming... Chapter 9 - Hypertext transfer protocol What is HTTP? How does HTTP work? Web clients Web servers Common gateway interface (CGI)
23 Java network programming... Chapter 10 - Java servlets
24 Java network programming... Chapter 11 - Remote Method Invocation How does RMI work? Defining an RMI service interface Implementing an RMI service interface Creating stub and skeleton classes Creating an RMI server Creating an RMI client Running the RMI system RMI packages and classes RMI deployment issues RMI for callbacks
25 Java network programming... Chapter 12 - Java IDL and Corba Architectural view of Corba Interface definition language From IDL to Java
26 Java network programming... Chapter 13 - JavaMail
27 A note on distributed computing Waldo, Wyant, Wollrath and Kendall Programming a distributed system is not the same as a single-host system State is distributed Failure is partial How to compensate?
28 On agent-based software engineeing Nick Jennings Distributed systems should be built with cooperating components Agents are bounded wrt their environment Agents can be robust, proactive, self-aware Agents can be mobile Unexpected (emerging) group behaviours
29 The seven deadly sins of distributed systems Steve Muir 1. Networks are unreliable in the worst possible way 2. DNS does not make for a good naming system 3. Local clocks are inaccurate and unreliable 4. Large-scale systems always have inconsistencies 5. Improbable events occur frequently in large systems 6. Overutilisation is the steady-state condition 7. Limited system transparency hampers debugging
30 The end
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