Full HTML for
Given by Gang Cheng at Rome Lab Quarterly Review for CIV on June 28 96. Foils prepared 23 February 97
Outside Index
Summary of Material
| Text-oriented interaction and collaboration |
| Synchronous chat and asynchronous bulletin-board are integrated in a single collaboration environment |
| Messages are in email-like format |
| Built on HTTP,Web server/browser and RDBMS server |
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A WWW On-line Chat and Bulletin-Board System For Collaborative Interaction Gang Cheng
Summary
Architecture
Major Functionality
Chat Client
Chat Server
Current Status
Outside Index
Summary of Material
HTML version of Basic Foils prepared 23 February 97 
Full HTML Index
HTML version of Basic Foils prepared 23 February 97
Full HTML Index
| Text-oriented interaction and collaboration |
| Synchronous chat and asynchronous bulletin-board are integrated in a single collaboration environment |
| Messages are in email-like format |
| Built on HTTP,Web server/browser and RDBMS server |
HTML version of Basic Foils prepared 23 February 97 
Full HTML Index
| 1 a client enters an message |
| via a netscape browser |
| 2 the message is sent to the |
| Web server via HTTP |
| 3 the message is logged into |
| a database managed by the |
| RDBMS server |
| 4 other clients keep checking |
| if new message arrived |
| 5 the check request is sent |
| to the Web server via HTTP |
| 6 the RDBMS server checks the message database |
| 7 if a new message found, it is sent back to the client via HTTP |
HTML version of Basic Foils prepared 23 February 97
Full HTML Index
| Support multiple chat-channels/bulletin-boards simultaneously |
| Support multiple conversation/discussion modes - group (many-to-many), personal (one-to-one) and moderated auditorium (one-to-many) |
| On-line archiving and searching |
| Fully integrated with WWW |
HTML version of Basic Foils prepared 23 February 97
Full HTML Index
| Written in HTML and JavaScript |
| Works under Netscape browsers on any platform - no special client software needed |
| Multi-frame based GUI |
| Client-Server interaction is via HTTP |
| No `refresh effect' on the GUI due to the use of JavaScript |
HTML version of Basic Foils prepared 23 February 97
Full HTML Index
| A Web server plus an Oracle7 RDBMS server serves as the chat server |
| Web server - listens to messages/requests from clients via HTTP |
| Oracle server - handles message logging/archiving/searching, concurrency control, user/session/server management and message retrieval |
| All advantages of a RDBMS server - high-performance, large number of concurrent users |
HTML version of Basic Foils prepared 23 February 97
Full HTML Index
| Fully Operational |
| Customizable to Particular Control and Command Scenario |
| Possible Integration with the Java-based Chat System to Include Line-based Chat Conversation |
| Integration with the Application Scenarios is pending |
| Demo - http://naos.npac.syr.edu:1963/cgi-bin/chat/chat.html |