• The KIPS Transactions:PartC
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• v.11C no.4
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• pp.545-554
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• 2004

WebDAV is a protocol to support collaboration among the workers in geographically distant locations through the Internet. WebDAV extends the web communication protocol HTTP/1.1 to provide a standard infrastructure for supporting asynchronous collaboration for various contents across the Internet. To provide the WebDAV functionality in legacy applications such as web-based collaborative systems or document management systems, those systems need to be implemented additionally to handle the WebDAV methods and headers information. In this paper, we developed an Apache-based WebDAV server, named DAVinci(WebDAV Is New Collaborative web-authoring Innovation)which supports the WebDAV specification. DAVinci was implemented as a form of service provider on a mod_dav Apache module. Mod_day, which is an Apache module, is an open source module to provide WebDAV capabilities in an Apache web server. We used a file system for storing resources and the PostgreSQL database for their properties. In addition, the system provides a consistency manager to guarantee that both resources and properties are maintained without inconsistency between resources and their properties.

• The KIPS Transactions:PartC
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• v.12C no.1 s.97
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• pp.129-136
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• 2005

WebDAV extends the web communication protocol HTTP/1.1 to provide a distributed authoring and versioning across the Internet. A property management, the principal ability of WebDAV, has many advantages for managing and utilizing additional information of server resources as well as supports a role of storage. Most WebDAV Application systems currently available are using WebDAV for providing simple storage space, not for the functionality of property management. However, to develop an advanced application such as a collaborative system based on WebDAV, it is very important to design and utilize user-defined WebDAV properties. In this paper, we propose DavSUDP(WebDAV Simple User-defined Property Definition Protocol) that describes XML-based configurations representing WebDAV user-defined properties and their processing steps. DavSUDP enables WebDAV servers to effectively manage user-defined properties in developing WebDAV-based applications. To show this, we extended the Apache mod_dav module to support DavSVDP and developed the OpenSpace in the iPlace collaborative system using the extended Apache web server.

• Proceedings of the Korean Information Science Society Conference
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• 2004.04a
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• pp.397-399
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• 2004

분산된 작업 공간의 사용자가 인터넷을 통하여 협업을 할 수 있도록 하기 위하여 WebDAV 명세가 W3C의 IETF의 작업 그룹에 의해서 1992년 2월에 발표되었다. WebDAV는 HTTP/1.1을 확장한 웹 통신프로토콜로서, 인터넷을 통하여 광범위하고 다양한 콘텐츠의 비동기적인 협업을 지원하기 위한 표준 하부 구조를 제공한다. 이러한 명세를 지원하는 WebDAV 서버의 주요 기능은 HTTP/1.1의 기본적인 웹 서버의 기능을 제공하면서 확장된 WebDAV 명세의 기능을 제공하는 것이다. 본 논문에서 설계한 WebDAV 서버는 WebDAV를 지원하고 있는 공개 소프트웨어인 아파치 웹 서버의 mod_dav 모듈을 확장한 것으로 WebDAV의 자원과 속성 및 잠금 정보를 기존의 파일 시스템의 파일 형태로 관리하고 있는 것을 자원의 속성과 잠금 정보 부분을 PostgreSQL 데이터베이스에서 관리하도록 하였다. WebDAV 자원의 속성과 잠금 정보를 파일로 관리함으로 인한 성능 저하와 확장성의 문제를 해결할 수 있다.