>
> Somehow, I think you may be worrying allot about a small problem. You said
> that this has to do with a bank transaction. What user do you know that is
> going to walk away from their machine during a bank transaction. Once again,
> If they decide to actually walk away, employ an applet on the user end to
> check to see if there still around. I would check to see if the applet is
> still loaded for that session. That's pretty simple.
>
> Anyone else have a better idea?
>
I agree. Also there are things such as contracts and disclaimers you can post
saying: 'If you don't wait or click 'STOP' or even breathe your transaction will
be in an undeteremined state and we wash our hands from it'. :)
This may seem like putting too many constraints on the user but realistically
that is what happens. The web browser is a very difficult environment to have
an applications running in it.
dave
>
> John D. McDonald
> CipherStream Systems
> email: [EMAIL PROTECTED]
> web: www.cipherstream.com
> -------------------------------------------------------
> Secure E-Business Is Our Business
> -------------------------------------------------------
> ----- Original Message -----
> From: Pankaj <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Wednesday, November 17, 1999 9:23 PM
> Subject: Re: How to know a brower closed
>
> > Hello,
> > i think i'll elaborate a little on my problem. here:
> >
> > In my credit card processing servlet(a proto for our project) i am making
> > https calls to bank(dummy) and mall(dummy) for verifying client details.
> Now
> > since making 2-3 https calls takes a while i want to know at the end of
> > processing whether the client is still there or he has got disconnected
> > somehow. It is very imp coz my servlet(and hence the Bank) might have
> > committed the transaction and the client will never know. In that case i
> want
> > to send him email. So what r the possible ways for me to know that client
> has
> > got disconnected..? At the end of my procesing i redirect the client back
> to
> > the mall where he came from. I triend to capture the function's
> IOException to
> > know whether the cliend has got disconnected but it doesn't work all the
> > time. Sometimes i get a Committed Transaction without a corresponding
> email
> > being generated.
> >
> > Is it advisable to use Time-outs..? can ICMP help me polling the client..?
> or
> > some other way of pinging the client..?
> >
> > Please help me.
> >
> > Thanks,
> > Pankaj.
> > David Mossakowski <[EMAIL PROTECTED]> wrote:
> > There is no notion of 'client is no longer using the services' because
> once
> > every request is over you can say that 'client is no longer using
> services'.
> > It doesn't much matter (except for the session timeout) if the client
> makes
> > another request 5 or 5 hours later.
> >
> > So, yes, the only way to 'fix' it is to set a time-limit for a session
> being
> > inactive. Other thing to do is not to tie any connections to external
> > resources to the client. Use connection pooling.
> >
> > As for time out period of your session. This varies depending on what you
> > do.
> > For example my web-based e-mail account has unlimited time (it probably
> isn't
> > a
> > servlet but just to illustrate). I can start it today and have the page
> open
> > overnight, come back next morning, click get mail and it works. But for
> > online
> > trading or banking you would probably set the time out to less than
> infinity.
> >
> > dave.
> >
> > "Gupta, Lokesh" wrote:
> >
> > > So what are the possible ways for you to detect on the server side that
> the
> > > client is not longer using the services. Is that usually done using some
> > > kind of a time-limit since the last hit on the servlet? If yes, are
> there
> > > any recommendations regarding what these time-limits should be?
> > >
> > > Thanks,
> > >
> > > Lokesh
> > >
> > > -----Original Message-----
> > > From: David Mossakowski [mailto:[EMAIL PROTECTED]]
> > > Sent: Wednesday, November 17, 1999 10:26 AM
> > > To: [EMAIL PROTECTED]
> > > Subject: Re: How to know a brower closed
> > >
> > > There is no way to know that.
> > >
> > > To release resources use HTTP binding listener and implement the unbind
> > > method. There you can release the resources because when the session is
> > > expired this method is called.
> > >
> > > dave.
> > >
> > > Joe Lei wrote:
> > >
> > > > Hi there
> > > >
> > > > is it possible to notify a servlet from the client side (using
> > > JavaScript/applet to servlet communication or else) when the user close
> the
> > > brower (without explicitly logout) so that the clean up process, like
> > > closing db connection, invalidating session object etc. can be
> triggered.
> > > >
> > > > If there're any alternative, pls suggest. Thx
> > > > Joe
> > > >
> > > >
> > >
> ___________________________________________________________________________
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> > > --
> > > David Mossakowski [EMAIL PROTECTED]
> > > Programmer 212.310.7275
> > > Instinet Corporation
> > >
> > > "I don't sit idly by, I'm planning a big surprise"
> > >
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> > --
> > David Mossakowski [EMAIL PROTECTED]
> > Programmer 212.310.7275
> > Instinet Corporation
> >
> > "I don't sit idly by, I'm planning a big surprise"
> >
> >
> ___________________________________________________________________________
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--
David Mossakowski [EMAIL PROTECTED]
Programmer 212.310.7275
Instinet Corporation
"I don't sit idly by, I'm planning a big surprise"
___________________________________________________________________________
To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
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