psdi.webclient.servlet

Class SessionServlet

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

psdi.webclient.servlet.SessionServlet

All Implemented Interfaces:

java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public class SessionServlet
extends javax.servlet.http.HttpServlet

Responds to a ping that comes from browser through XMLHttpRequest to reset the web server session timeout. The response is used by javascript in the browser to sync itself to the session timeout again.

This is useful in maintaining session active between the time user is inactive and the time he comes back and uses the application without making the request through hiddenframe (which was the only element that used to reset the session timeout until this class's need).

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
SessionServlet()

Method Summary

Modifier and Type	Method and Description
void	doGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Receives XMLHttpRequest from browser after the pre-logout session time-out threshhold has been reached.

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPost, doPut, doTrace, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, init, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SessionServlet

public SessionServlet()

Method Detail

doGet

public void doGet(javax.servlet.http.HttpServletRequest request,
                  javax.servlet.http.HttpServletResponse response)
           throws java.io.IOException,
                  javax.servlet.ServletException

Receives XMLHttpRequest from browser after the pre-logout session time-out threshhold has been reached. Receiving this request should automatically reset the web server session. However, this Servlet needs to send reponse back to the frontend to restart its timer as well.

Overrides:

doGet in class javax.servlet.http.HttpServlet

Throws:

java.io.IOException

javax.servlet.ServletException

See Also:

HttpServlet.doGet(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)