Red Hat NETSCAPE ENTERPRISE SERVER 6.0 - NSAPI PROGRAMMER GUIDE Uživatelský manuál stáhnout pdf (Strana 71)

Chapter 7

API Clarifications

This appendix clarifies ways in which the Servlet 2.2 API specification is

implemented in iPlanet Web Server 6.0 in the following sections:

• Clarification of HttpSession Scope

• Clarifications for Using Methods

• Other Useful Information

Clarification of HttpSession Scope

The Servlet 2.2 API Specification is open to interpretation in regard to the scope of

HttpSession objects.

By default, iPlanet Web Server marks the session tracking cookie’s path to that of

the context or application’s contextPath. This results in the browser not replaying a

session cookie to an application for which it is not intended. Hence, the

HttpSession objects are scoped appropriately.

However, if servlet A in one context dispatches a request to servlet B in a different

context, the specification is open to interpretation. By default iPlanet Web Server

permits this, and you must make sure that the attributes placed in the HttpSession

object are loaded by a class loader that is common to the applications involved.

You can use a virtual-server-level class loader or the system class loader, although

this is not generally recommended.

To allow different applications to share sessions and session attributes:

• Use a common session manager at the virtual server level.

<vs>

<session-manager class="..." />

</vs>

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Red Hat NETSCAPE ENTERPRISE SERVER 6.0 - NSAPI PROGRAMMER GUIDE Uživatelský manuál Strana 71