University of California, Irvine
Institute for Software Research (ISR)
is proud to sponsor the

Bay Area Roundtable (BART)

Web Protocols: What's New? What's Next?

Friday, October 8, 1999

9:00 am - 9:30 am: Coffee/Network
9:30 am - 12:00 pm: BART Meeting

Crown Plaza-Cabaña Hotel, Palo Alto

4290 El Camino Real
Tel (650) 857-0787

There is a $15.00 charge for non-sponsors.
Checks should be made payable to UC Regents.

No reservations required.

HTTP and Extensibility - What's Next? (PPT or HTML)
Henrik Frystyk Nielsen, Microsoft,

HTTP/1.1 is currently a Draft Standard in the IETF and little has changed for many months. Is this because applications are in catch up mode with the specification or is it silence before the XML storm replacing everything with angle brackets? What will the next move be? While performance is relatively easy to handle, the Achilles heel of HTTP is extensibility. Even though HTTP does a lot better compared to other protocols, the Web has changed many things including the way we think of protocols and how they are extended. Although HTTP/1.1 has a large set of features, many more useful extensions have been discussed but not deployed. At the same time, many features in the base protocol are really extensions that should not have been in the base protocol. This talk will be an overview of the current state of HTTP extension initiatives and a perspective of what can be done, both to application models and specifications, in order to get to the next level of the Web evolution, without fragmenting the Web as an information space or letting HTTP get stuck in its current mold.

Biography: Henrik Frystyk Nielsen is a Program Manager at Microsoft, Redmond, Washington. Since the beginning of 1994, Henrik has been working on mechanisms for dealing with distributed evolution and interoperability in the Web. He is a co-author of the HTTP/1.0 and HTTP/1.1 specifications as well as the HTTP Extension Framework. In 1995, Henrik joined the initial W3C team at MIT where he served as the Activity Lead for HTTP, HTTP-NG and the Web Characterization effort and as a key developer and maintainer of Libwww. Before that, he worked on the initial World Wide Web project at CERN, where he participated in the early design of HTTP/1.0 and worked on mechanisms for implementing Internet application protocols as hierarchical state machines. He holds a degree as Master of Electrical Engineering in Telecommunications from Aalborg University, Denmark.

WebDAV: What's Next
Jim Whitehead, Information and Computer Science, UC Irvine,

In February, 1999, the WebDAV Distributed Authoring Protocol was approved by the IETF, and has since been adopted in multiple servers and clients (such as Apache and Office 2000), providing remote collaborative authoring facilities for the Web. Since then, work on WebDAV has continued, with current efforts focusing on adding searching, versioning, and configuration management. Beginning with a brief overview of WebDAV, the talk will mostly focus on "what's next." It will accomplish this by giving an overview of the DAV Searching and Locating (DASL) searching protocol, and the Delta-V versioning and configuration management protocol, both current efforts within the Internet Engineering Task Force (IETF). Each effort will be discussed with scenarios of use, goals, and highlights of the protocol's design.

Biography: Jim Whitehead is the Chair of the WebDAV Working Group of the IETF, and a Ph.D. student in the Software research group at U.C. Irvine. Jim's research interests include remote collaborative authoring, configuration management, hypertext versioning, open hypertext systems, and software architecture. Jim was also an organizer of the recent Workshop on Internet Scale Technology (TWIST), focusing on Internet Scale Namespaces, held at U.C. Irvine. Prior to joining U.C. Irvine, Jim performed firmware development on air traffic and vessel traffic control systems at Raytheon.

Meeting Coordinator:
Richard N. Taylor, Information and Computer Science, University of California, Irvine,

Directions to the meeting are available.

Next Meeting:

Friday, November 12, 1999
Topic: Y2K: Start the Party or Sound the Dirge?
Coordinator: Tony Wasserman, Software Methods & Tools,
Location: Crown Plaza-Cabaña Hotel, Palo Alto
The Irvine Research Unit in Software wishes to thank its corporate sponsors:


The Boeing Company * IBM * Microsoft Corporation * Northrop Grumman Corporation
Raytheon Company * Sun Microsystems * TRW


FileNet Corporation * Printronix, Inc.
Continuus Software Corporation * Hewlett-Packard

For further information on BART or ISR, contact
        Debra Brodbeck at (949) 824-2260;

Institute for Software Research (ISR)
Information and Computer Science
University of California, Irvine CA 92697-3425