RE: Browser Closed
I ran into a similar problem. The servlet sessions will timeout so the user has to log in again, but that doesn't help with what you are talking about (which seems to be cleaning up things after a user has been inactive long enough). I basically created a context wide vector of user sessions (my own notion of a session, not servlet's) that had inside it the last time a request was received by that user. Upon any request I update the list for the current request (setting the time of last request to now) and clean up any sessions that have gone beyond my timeout period (which is slightly longer than my servlet session timeout period to be safe). Admittedly this cleanup will only happen if a request occurs after the user has been inactive long enough, but, for me, that was acceptable. HTH. -Devon -Original Message- From: Alin Simionoiu [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 17, 2001 12:18 AM To: [EMAIL PROTECTED] Subject: Browser Closed Hello everybody, I'm implementing a login/logout from a web page. Everithing is absolutly fine if the user it's using my logout button. But, if the user just close the browser, without using the logout button, then I'm in trouble. Has anybody any ideea if is possible to know when a user close the browser?.. I'm not using a keep-alive connection. Probably is not possible, considering that http is a stateless protocol. Alin
Re: Browser Closed
That was a solution that come in my mind also. But, I don't think you need to build you're own time-out mechanism. There already one in place. If you register a SessionBinding listener, you can be notified on valueUnbound when the session has expire. I do some testing with the default value for session timeout ( which I think is 30 sec.) and is working pretty good. You can modify this value from tomcat setting or from you're code. BTW, HttpSession has a method named setMaxInactiveInterval which take as input a int value. The problem were is that his method is obsolete, and I think I read some ware that it doesn't have a replacement...right? Alin - Original Message - From: Devon Ziegler [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, May 21, 2001 9:02 AM Subject: RE: Browser Closed I ran into a similar problem. The servlet sessions will timeout so the user has to log in again, but that doesn't help with what you are talking about (which seems to be cleaning up things after a user has been inactive long enough). I basically created a context wide vector of user sessions (my own notion of a session, not servlet's) that had inside it the last time a request was received by that user. Upon any request I update the list for the current request (setting the time of last request to now) and clean up any sessions that have gone beyond my timeout period (which is slightly longer than my servlet session timeout period to be safe). Admittedly this cleanup will only happen if a request occurs after the user has been inactive long enough, but, for me, that was acceptable. HTH. -Devon -Original Message- From: Alin Simionoiu [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 17, 2001 12:18 AM To: [EMAIL PROTECTED] Subject: Browser Closed Hello everybody, I'm implementing a login/logout from a web page. Everithing is absolutly fine if the user it's using my logout button. But, if the user just close the browser, without using the logout button, then I'm in trouble. Has anybody any ideea if is possible to know when a user close the browser?.. I'm not using a keep-alive connection. Probably is not possible, considering that http is a stateless protocol. Alin
RE: Browser Closed
Talk to me about your other secrets, I do love the sounds of your laugh, this Crazy Dog, is hungry now, so im getting a tuna sandwich for lunch today, what do you think? Do you have any other things on your mind today that I should no of? Oh well, it looks like 4 of the people who were from our company did not show up after all yesterdays race, I don't feel too bad now. What does Sylvia do with all her time during the day? -Original Message- From: Alin Simionoiu [mailto:[EMAIL PROTECTED]] Sent: Monday, May 21, 2001 11:42 AM To: [EMAIL PROTECTED] Subject: Re: Browser Closed That was a solution that come in my mind also. But, I don't think you need to build you're own time-out mechanism. There already one in place. If you register a SessionBinding listener, you can be notified on valueUnbound when the session has expire. I do some testing with the default value for session timeout ( which I think is 30 sec.) and is working pretty good. You can modify this value from tomcat setting or from you're code. BTW, HttpSession has a method named setMaxInactiveInterval which take as input a int value. The problem were is that his method is obsolete, and I think I read some ware that it doesn't have a replacement...right? Alin - Original Message - From: Devon Ziegler [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, May 21, 2001 9:02 AM Subject: RE: Browser Closed I ran into a similar problem. The servlet sessions will timeout so the user has to log in again, but that doesn't help with what you are talking about (which seems to be cleaning up things after a user has been inactive long enough). I basically created a context wide vector of user sessions (my own notion of a session, not servlet's) that had inside it the last time a request was received by that user. Upon any request I update the list for the current request (setting the time of last request to now) and clean up any sessions that have gone beyond my timeout period (which is slightly longer than my servlet session timeout period to be safe). Admittedly this cleanup will only happen if a request occurs after the user has been inactive long enough, but, for me, that was acceptable. HTH. -Devon -Original Message- From: Alin Simionoiu [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 17, 2001 12:18 AM To: [EMAIL PROTECTED] Subject: Browser Closed Hello everybody, I'm implementing a login/logout from a web page. Everithing is absolutly fine if the user it's using my logout button. But, if the user just close the browser, without using the logout button, then I'm in trouble. Has anybody any ideea if is possible to know when a user close the browser?.. I'm not using a keep-alive connection. Probably is not possible, considering that http is a stateless protocol. Alin
Re: Browser Closed
On Wed, 16 May 2001, Alin Simionoiu wrote: I think this event as also fired when you browse thru the pages..wright?.. Want I will really like to have is a SessionEnd event... Basically ... there isn't a generic, catch-all way to do this, so you're going to need to rely on the session timeout mechanism. - Original Message - From: Richard Draucker [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, May 16, 2001 9:26 PM Subject: Re: Browser Closed Try clicking the logout button with a javascript triggered by the body onunload. This is how the porn sites feed you a zillion popups when you try to get outta their site... ooops, you weren't supposed to know I know that. On Thu, 17 May 2001, you wrote: Hello everybody, I'm implementing a login/logout from a web page. Everithing is absolutly fine if the user it's using my logout button. But, if the user just close the browser, without using the logout button, then I'm in trouble. Has anybody any ideea if is possible to know when a user close the browser?.. I'm not using a keep-alive connection. Probably is not possible, considering that http is a stateless protocol. Alin -- Richard Draucker, [EMAIL PROTECTED] Protected-Data.Com www.protected-data.com Remote data support for web developers. Milt Epstein Research Programmer Software/Systems Development Group Computing and Communications Services Office (CCSO) University of Illinois at Urbana-Champaign (UIUC) [EMAIL PROTECTED]
Re: Browser Closed
Is possible to find out if a specific session is no longer valid?.. - Original Message - From: Milt Epstein [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, May 17, 2001 1:15 AM Subject: Re: Browser Closed On Wed, 16 May 2001, Alin Simionoiu wrote: I think this event as also fired when you browse thru the pages..wright?.. Want I will really like to have is a SessionEnd event... Basically ... there isn't a generic, catch-all way to do this, so you're going to need to rely on the session timeout mechanism. - Original Message - From: Richard Draucker [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, May 16, 2001 9:26 PM Subject: Re: Browser Closed Try clicking the logout button with a javascript triggered by the body onunload. This is how the porn sites feed you a zillion popups when you try to get outta their site... ooops, you weren't supposed to know I know that. On Thu, 17 May 2001, you wrote: Hello everybody, I'm implementing a login/logout from a web page. Everithing is absolutly fine if the user it's using my logout button. But, if the user just close the browser, without using the logout button, then I'm in trouble. Has anybody any ideea if is possible to know when a user close the browser?.. I'm not using a keep-alive connection. Probably is not possible, considering that http is a stateless protocol. Alin -- Richard Draucker, [EMAIL PROTECTED] Protected-Data.Com www.protected-data.com Remote data support for web developers. Milt Epstein Research Programmer Software/Systems Development Group Computing and Communications Services Office (CCSO) University of Illinois at Urbana-Champaign (UIUC) [EMAIL PROTECTED]
RE: Browser Closed
javax.servlet.http.HttpServletRequest.isRequestedSessionIdValid(). -- Bill K. -Original Message- From: Alin Simionoiu [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 17, 2001 11:34 AM To: [EMAIL PROTECTED] Subject: Re: Browser Closed Is possible to find out if a specific session is no longer valid?.. - Original Message - From: Milt Epstein [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, May 17, 2001 1:15 AM Subject: Re: Browser Closed On Wed, 16 May 2001, Alin Simionoiu wrote: I think this event as also fired when you browse thru the pages..wright?.. Want I will really like to have is a SessionEnd event... Basically ... there isn't a generic, catch-all way to do this, so you're going to need to rely on the session timeout mechanism. - Original Message - From: Richard Draucker [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, May 16, 2001 9:26 PM Subject: Re: Browser Closed Try clicking the logout button with a javascript triggered by the body onunload. This is how the porn sites feed you a zillion popups when you try to get outta their site... ooops, you weren't supposed to know I know that. On Thu, 17 May 2001, you wrote: Hello everybody, I'm implementing a login/logout from a web page. Everithing is absolutly fine if the user it's using my logout button. But, if the user just close the browser, without using the logout button, then I'm in trouble. Has anybody any ideea if is possible to know when a user close the browser?.. I'm not using a keep-alive connection. Probably is not possible, considering that http is a stateless protocol. Alin -- Richard Draucker, [EMAIL PROTECTED] Protected-Data.Com www.protected-data.com Remote data support for web developers. Milt Epstein Research Programmer Software/Systems Development Group Computing and Communications Services Office (CCSO) University of Illinois at Urbana-Champaign (UIUC) [EMAIL PROTECTED]
Re: Browser Closed
Corect. But this is true for existing session. Want I'm trying to find is something like : isSessionValid(Session) Alin - Original Message - From: William Kaufman [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, May 17, 2001 1:11 PM Subject: RE: Browser Closed javax.servlet.http.HttpServletRequest.isRequestedSessionIdValid(). -- Bill K. -Original Message- From: Alin Simionoiu [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 17, 2001 11:34 AM To: [EMAIL PROTECTED] Subject: Re: Browser Closed Is possible to find out if a specific session is no longer valid?.. - Original Message - From: Milt Epstein [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, May 17, 2001 1:15 AM Subject: Re: Browser Closed On Wed, 16 May 2001, Alin Simionoiu wrote: I think this event as also fired when you browse thru the pages..wright?.. Want I will really like to have is a SessionEnd event... Basically ... there isn't a generic, catch-all way to do this, so you're going to need to rely on the session timeout mechanism. - Original Message - From: Richard Draucker [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, May 16, 2001 9:26 PM Subject: Re: Browser Closed Try clicking the logout button with a javascript triggered by the body onunload. This is how the porn sites feed you a zillion popups when you try to get outta their site... ooops, you weren't supposed to know I know that. On Thu, 17 May 2001, you wrote: Hello everybody, I'm implementing a login/logout from a web page. Everithing is absolutly fine if the user it's using my logout button. But, if the user just close the browser, without using the logout button, then I'm in trouble. Has anybody any ideea if is possible to know when a user close the browser?.. I'm not using a keep-alive connection. Probably is not possible, considering that http is a stateless protocol. Alin -- Richard Draucker, [EMAIL PROTECTED] Protected-Data.Com www.protected-data.com Remote data support for web developers. Milt Epstein Research Programmer Software/Systems Development Group Computing and Communications Services Office (CCSO) University of Illinois at Urbana-Champaign (UIUC) [EMAIL PROTECTED]
Re: Browser Closed
On Thu, 17 May 2001, Alin Simionoiu wrote: Corect. But this is true for existing session. Want I'm trying to find is something like : isSessionValid(Session) If you look at the session interface you can see that there's a method that does this. session.isValid(). /** * Return the codeisValid/code flag for this session. */ public boolean isValid(); ..bip
RE: Browser Closed
If you got an HttpSession from HttpServletRequest, and you didn't invalidate it yourself, then it's valid. There's no session you can get which isn't valid. Maybe you mean whether it's new? Call HttpSession.isNew() for that. Or whether you invalidated it? You could call isNew() for that, too, and catch the IllegalStateException it would throw for an invalid session. -- Bill K. -Original Message- From: Alin Simionoiu [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 17, 2001 2:56 PM To: [EMAIL PROTECTED] Subject: Re: Browser Closed Corect. But this is true for existing session. Want I'm trying to find is something like : isSessionValid(Session) Alin - Original Message - From: William Kaufman [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, May 17, 2001 1:11 PM Subject: RE: Browser Closed javax.servlet.http.HttpServletRequest.isRequestedSessionIdValid(). -- Bill K. -Original Message- From: Alin Simionoiu [mailto:[EMAIL PROTECTED]] Sent: Thursday, May 17, 2001 11:34 AM To: [EMAIL PROTECTED] Subject: Re: Browser Closed Is possible to find out if a specific session is no longer valid?.. - Original Message - From: Milt Epstein [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, May 17, 2001 1:15 AM Subject: Re: Browser Closed On Wed, 16 May 2001, Alin Simionoiu wrote: I think this event as also fired when you browse thru the pages..wright?.. Want I will really like to have is a SessionEnd event... Basically ... there isn't a generic, catch-all way to do this, so you're going to need to rely on the session timeout mechanism. - Original Message - From: Richard Draucker [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, May 16, 2001 9:26 PM Subject: Re: Browser Closed Try clicking the logout button with a javascript triggered by the body onunload. This is how the porn sites feed you a zillion popups when you try to get outta their site... ooops, you weren't supposed to know I know that. On Thu, 17 May 2001, you wrote: Hello everybody, I'm implementing a login/logout from a web page. Everithing is absolutly fine if the user it's using my logout button. But, if the user just close the browser, without using the logout button, then I'm in trouble. Has anybody any ideea if is possible to know when a user close the browser?.. I'm not using a keep-alive connection. Probably is not possible, considering that http is a stateless protocol. Alin -- Richard Draucker, [EMAIL PROTECTED] Protected-Data.Com www.protected-data.com Remote data support for web developers. Milt Epstein Research Programmer Software/Systems Development Group Computing and Communications Services Office (CCSO) University of Illinois at Urbana-Champaign (UIUC) [EMAIL PROTECTED]
Re: Browser Closed
Try clicking the logout button with a javascript triggered by the body onunload. This is how the porn sites feed you a zillion popups when you try to get outta their site... ooops, you weren't supposed to know I know that. On Thu, 17 May 2001, you wrote: Hello everybody, I'm implementing a login/logout from a web page. Everithing is absolutly fine if the user it's using my logout button. But, if the user just close the browser, without using the logout button, then I'm in trouble. Has anybody any ideea if is possible to know when a user close the browser?.. I'm not using a keep-alive connection. Probably is not possible, considering that http is a stateless protocol. Alin -- Richard Draucker, [EMAIL PROTECTED] Protected-Data.Com www.protected-data.com Remote data support for web developers.
Re: Browser Closed
I think this event as also fired when you browse thru the pages..wright?.. Want I will really like to have is a SessionEnd event... Alin - Original Message - From: Richard Draucker [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, May 16, 2001 9:26 PM Subject: Re: Browser Closed Try clicking the logout button with a javascript triggered by the body onunload. This is how the porn sites feed you a zillion popups when you try to get outta their site... ooops, you weren't supposed to know I know that. On Thu, 17 May 2001, you wrote: Hello everybody, I'm implementing a login/logout from a web page. Everithing is absolutly fine if the user it's using my logout button. But, if the user just close the browser, without using the logout button, then I'm in trouble. Has anybody any ideea if is possible to know when a user close the browser?.. I'm not using a keep-alive connection. Probably is not possible, considering that http is a stateless protocol. Alin -- Richard Draucker, [EMAIL PROTECTED] Protected-Data.Com www.protected-data.com Remote data support for web developers.
