Servlet Specification

Java Servlet Specification Version 2.4 ships with theApplication Server 8.2 release, and can be downloaded from . Version 2.3 of the specification shipped with the J2EE 1.3 SDK. The following items discuss compatibility issues between these releases:

• HttpSessionListener sessionDestroyed method was previously used to notify that a session was invalidated. As of this release, this method is used to notify that a session is about to be invalidated so that it notifies before the session invalidation. If the code assumed the previous behavior, it must be modified to match the new behavior.

• ServletRequest methods getRemotePort, getLocalName, getLocalAddr, getLocalPort...

• The following methods are added in the ServletRequest interface in this version of the specification. This addition causes source incompatibility in some cases, such as when a developer implements the ServletRequest interface. In this case, ensure that all the following new methods are implemented:

  • The getRemotePort() method returns the Internet Protocol (IP) source port of the client or last proxy that sent the request.

  • The getLocalName() method returns the host name of the IP interface on which the request was received.

  • The public java.lang.String getLocalAddr() method returns the IP address of the interface on which the request was received.

  • The public int getLocalPort() method returns the IP port number of the interface on which the request was received.