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How to implement Request Time Out

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posted 14 years ago

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How to implement Request Time Out in Web Application?

If request doesn't respond in 30Sec system should show Request Time Out Page.

How do I implement the same?

Srikanth Nutigattu

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posted 14 years ago

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Are you talking about Session timout?

If yes, you can configure using

or you can specify by calling public void setMaxInactiveInterval(int interval) of HttpSession classhttp://java.sun.com/products/servlet/2.2/javadoc/

The difference between the two is using the xml approach you can specify in minutes where as using the API you can set session timeout in seconds.

Harpreet Singh janda

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posted 14 years ago

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You can configure a listener which will check for the session and redirect to error page if session is null;

shashi wagh

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posted 14 years ago

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I know about the Session Time Out. n web.xml setting n all

I want to Implement Request Time Out.......

Say I put request http://localhost:8080/HRMS/GetEmployee.do Servlet

It will hit the server and shows the Response on the browser.
I want the request should process within the specifies time Say 1 Sec.

If it takes more than 1 Sec. It should redirect to Some other page showing the Request Time is Out

Harpreet Singh janda

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You can use javascript which will start counting when a page is loaded and will redirect to a url as soon as the counting is over.

shashi wagh

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posted 14 years ago

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Can you explain more how do I achieve the same using Javascript?

Sample Code or URL?

shashi wagh

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posted 14 years ago

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I have Develop following Login
But It shows the Time out page After processing the request i.e. after 4 Sec.

I want to halt the Request Processing in 1 Sec.

Filter Code

--------------------------------------------------------------------------------------------------------
Timer

I have also tried

------------------------------------------------------------------------------------------------------------------------------
Next Jsp

----------------------------------------------------------------------------------------------------
Result on Consol

Anky Singhal

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posted 13 years ago

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shashi wagh wrote:I have Develop following Login
But It shows the Time out page After processing the request i.e. after 4 Sec.

I want to halt the Request Processing in 1 Sec.

Filter Code
public void doFilter( ServletRequest request, ServletResponse response, FilterChain chain ) throws IOException, ServletException { HttpServletRequest req = (HttpServletRequest)request; HttpServletResponse res = (HttpServletResponse)response; System.out.println( "In Filter" ); Long startTime = System.currentTimeMillis();//t1 req.setAttribute( "startTime", startTime ); Timer timer = new Timer(); RequestTimeListener listener = new RequestTimeListener( req, res, timer ); timer.scheduleAtFixedRate( listener, 0, 10 ); chain.doFilter( request, response ); timer.cancel(); }
--------------------------------------------------------------------------------------------------------
Timer
public class RequestTimeListener extends TimerTask { HttpServletResponse response; HttpServletRequest request; Timer timer; public RequestTimeListener( HttpServletRequest request, HttpServletResponse response, Timer timer) { this.response = response; this.request = request; this.timer = timer; } @Override public void run() { System.out.println( "In Run" ); try { Long startTime = (Long)request.getAttribute( "startTime" ); Long endTime = System.currentTimeMillis(); if ( endTime - startTime > 1000 ) { System.out.println( "Diff...=" + ( endTime - startTime ) ); request = null; response.sendRedirect( "http://shashikantw:8080/RequestTimeOut/TimeOut.jsp" ); Thread.currentThread().suspend(); } } catch ( Exception e ){} } }

I have also tried
public void run() { System.out.println( "In Run" ); try { Long startTime = (Long)request.getAttribute( "startTime" ); Long endTime = System.currentTimeMillis(); if ( endTime - startTime > 1000 ) { System.out.println( "Diff....." + ( endTime - startTime ) ); response.reset(); response.sendRedirect( "http://shashikantw:8080/RequestTimeOut/TimeOut.jsp" ); response.flushBuffer(); Thread.currentThread().suspend(); return; } } catch ( Exception e ) { } }

------------------------------------------------------------------------------------------------------------------------------
Next Jsp
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%> <html> <head> <title>My JSP 'next.jsp' starting page</title> </head> <body> <% Thread.sleep(4000); %> <h1>next page11111111111</h1><br> </body> </html>
----------------------------------------------------------------------------------------------------
Result on Consol
10:00:30,779 INFO [STDOUT] In Run 10:00:30,779 INFO [STDOUT] Diff...=1016 10:00:33,763 INFO [STDOUT] In Filter 10:00:33,763 INFO [STDOUT] In Run

Dear Sashi,

Is this code working at your end? Actually m also looking out a soln for similar prob. I am not able to call that error.jsp from request time listener class.

Souvvik Basu

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posted 13 years ago

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You can try using this one. This isnt exactly what you want, but something similar. Clicking on a button takes you to another page. Here you have another button. You either click it within a certain time interval, or you get timed out and sent to a different page.
Hope this helps you.

I'll just give you the relevant servlet code. The rest (mapping, jsp etc) should be easy.

package servlets;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.*;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.ServletException;
import javax.servlet.http.HttpSession;

public class CookiePlay extends HttpServlet {
    
    public void doGet (HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
        
        HttpSession session = req.getSession();
        
        
        
        
        
        session.setMaxInactiveInterval(5000);
        
        long idletime = System.currentTimeMillis() - session.getLastAccessedTime();
        
        req.setAttribute("idleTime", idletime);
        
        
        
        
        
        if(idletime > session.getMaxInactiveInterval()) {
            
            RequestDispatcher disp = req.getRequestDispatcher("timedout.jsp");
            disp.forward(req, res);
            
        }  else {
            
            RequestDispatcher dispat = req.getRequestDispatcher("showsessiontime.jsp");
            dispat.forward(req, res);
        }
    }
    
}

showsessiontime.jsp

timedout.jsp

Souvik
OCJP 6.0

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