Web Calendar Access Protocol (WCAP) is a protocol for remote client-server calendar access and scheduling based on the XML

XML

Extensible Markup Language is a set of rules for encoding documents in machine-readable form. It is defined in the XML 1.0 Specification produced by the W3C, and several other related specifications, all gratis open standards....

, HTTP, iCalendar

ICalendar

iCalendar is a computer file format which allows Internet users to send meeting requests and tasks to other Internet users, via email, or sharing files with an extension of .ics...

, and vCard

VCard

vCard is a file format standard for electronic business cards. vCards are often attached to e-mail messages, but can be exchanged in other ways, such as on the World Wide Web or Instant Messaging...

 Internet

Internet

The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite to serve billions of users worldwide...

 standards. WCAP was created for use with the product that eventually became Sun Java Calendar Server

Sun Java Calendar Server

The Sun Java System Calendar Server is Sun's calendar server. The currently available version is 6.3 which is now part of the Sun Java Communications Suite....

, but is also used by the open source Buni Meldware project . WCAP uses simple HTTP GET commands for accessing iCalendar, Freebusy, TODO and vCard entries. WCAP responses are either the traditional text form or an "xml-ized" form of iCalendar/etc. Several plugins exist including those for Mozilla Thunderbird

Mozilla Thunderbird

Mozilla Thunderbird is a free, open source, cross-platform e-mail and news client developed by the Mozilla Foundation. The project strategy is modeled after Mozilla Firefox, a project aimed at creating a web browser...

, Novell Evolution

Novell Evolution

Evolution or Novell Evolution is the official personal information manager and workgroup information management tool for GNOME. It combines e-mail, calendar, address book, and task list management functions. It has been an official part of GNOME since version 2.8 in September 2004...

 and Microsoft Outlook

Microsoft Outlook

Microsoft Outlook is a personal information manager from Microsoft, available both as a separate application as well as a part of the Microsoft Office suite...

. There is a competing protocol called CalDAV

CalDAV

Calendaring Extensions to WebDAV, or CalDAV, is an Internet standard allowing a client to access scheduling information on a remote server. It extends WebDAV specification and uses iCalendar format for the data. The protocol is defined by RFC 4791...

undergoing standardization.

Client

GET /wcap/get_freebusy.wcap?appid=mozilla-calendar&calid=mailto%3Atom%40localhost&busyonly=1&dtstart=20070521T040000Z&dtend=20070525T040000Z&fmt-out=text%2Fxml&id=17046506 HTTP/1.1

Host: localhost:8080

User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.10) Gecko/20070403 Thunderbird/1.5.0.10

Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5

Accept-Language: en-us,en;q=0.5

Accept-Encoding: gzip,deflate

Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7

Keep-Alive: 300

Connection: keep-alive

Pragma: no-cache

Cache-Control: no-cache

Response

HTTP/1.1 200 OK

Server: Apache-Coyote/1.1

X-Powered-By: Servlet 2.4; JBoss-4.0.4.GA (build: CVSTag=JBoss_4_0_4_GA date=200605151000)/Tomcat-5.5

Set-Cookie: JSESSIONID=41DAC48C79927D68EDFAF5FBFD491236; Path=/

Content-Type: text/html;charset=ISO-8859-1

Content-Length: 1399

Date: Mon, 21 May 2007 19:43:37 GMT









20061102T170639Z

20060814T110002Z

999

999

tom

tom

tom

@@o^c^WDEIC^g

@@o^a^RSF^g

@^a^rsf^g

@^c^^g

@^p^r^g

0

1



20070521T040000Z

20070525T040000Z

20070521T130000Z/20070521T140000Z20070521T150000Z/20070521T160000Z



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