Network Router User Manual

Web OS 10.0 Application Guide
Chapter 16: Persistence
425
212777-A, February 2002
The following topics discussing cookie-based persistence are detailed in this section:
n “Permanent and Temporary Cookies” on page 425
n “Cookie Formats” on page 425
n “Cookie Properties” on page 426
n “Client Browsers that Do Not Accept Cookies” on page 426
n “Cookie Modes of Operation” on page 427
n “Configuring Cookie-Based Persistence” on page 430
Permanent and Temporary Cookies
Cookies can either be permanent or temporary. A permanent cookie is stored on the client's
browser, as part of the response from a Web site’s server. It will be sent by the browser when
the client makes subsequent requests to the same site, even after the browser has been shut
down. A temporary cookie is only valid for the current browser session. Similar to a SSL Ses-
sion-based ID, the temporary cookie expires when you shut down the browser. Based on RFC
2109, any cookie without an expiration date is a temporary cookie.
Cookie Formats
A cookie can be defined in the HTTP header (the recommended method) or placed in the URL
for hashing. The cookie is defined as a “Name=Value” pair and can appear along with other
parameters and cookies. For example, the cookie “SessionID=1234” can be represented in
one of the following ways:
n In the HTTP Header
Cookie: SesssionID=1234
Cookie: ASP_SESSIONID=POIUHKJHLKHD
Cookie: name=john_smith
The second cookie represents an Active Server Page (ASP) session ID. The third cookie
represents an application-specific cookie that records the name of the client.
n Within the URL
http://www.mysite.com/reservations/SessionID=1234