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Overview of Tango2 Design and Implementation

Given by Krzysztof Walczak at NPAC Seminar on 27 August 97. Foils prepared 24 Nov 97

Tango2 is a state of the art Web based Collaboration System
This describes the principles and design of next version of Tango called Tango2
Tango2 is targeted at release April 98
Tango2 has a more sophisticated multi-room model than original Tango1
but still supports several different client application languages
The basic principles are followed by discussion of Client Daemon and the Server


Table of Contents for Overview of Tango2 Design and Implementation

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1 Tango 2
2 Why Tango2 Will Be Better ...
3 What is Wrong with Tango1...?
4 Tango2 Basics
5 Multiple Servers
6 No Plug-in !
7 Room Paradigm
8 Contents-server Independence
9 Server and Rooms Configuration
10 Multi-Room Paradigm
11 Tango Configuration
12 Restartable Applications
13 Room Paradigm - Summary
14 Protocol Improvements
15 Polling Mechanism
16 Shared Variables
17 Locks and Variables (cont.)
18 Shared Variables - Lifetime
19 Locks
20 Values
21 Predefined Sessions
22 Predefined Locks and Values
23 Access Restrictions
24 Compatible Application Groups
25 Different Applications
26 Control Application - Discussions
27 No Control Application !
28 Control Types
29 No Master !
30 API
31 API
32 Tango Reflection API
33 Tango Reflection API (cont.)
34 Administrator Interface
35 Fixed System vs. Sockets
36 Tango II : daemon
37 daemon Responsibilities
38 Connecting to the Room
39 Managing activities
40 Moving to the new Room
41 Services for Applications
42 daemon Architecture
43 Modules
44 Message flow in the daemon
45 Applets
46 Room Configuration
47 Tango2 server
48 Tango2 server - tasks
49 Tango2 server - architecture
50 Tango2 server - Room module
51 Tango2 server - implementation
52 Tango2 server

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