[plt-scheme] Web server examples

From: Jay McCarthy (jay.mccarthy at gmail.com)
Date: Wed Sep 7 09:20:39 EDT 2005

Problem report 7568 refers to changing the error message.

There are many related usability and documentation changes that I'm working on.


On 9/6/05, Anton van Straaten <anton at appsolutions.com> wrote:
> Don Felgar wrote:
> > On Thu, Sep 01, 2005, Jay McCarthy wrote:
> >
> >>Seems to work fine for me, perhaps it is only an issue with an old version?
> >
> >
> > I too saw that behavior at one time.  I talked with Greg about it, but
> > he couldn't repro the problem so I assumed I'd broken something
> > locally.  When I tried it again sometime later the bug was gone.
> > Since Anton has seen the problem too I suspect it's a deeper bug.
> My later post pointed out that this was due to a session timeout.  The
> error occurs "intermittently" because it's dependent on how long you
> wait before following a link to another page.
> The default-servlet-timeout in the SVN version of configuration-table is
> currently 30 secs.  When going through an example servlet like the quiz,
> this doesn't give one much time to ponder how many snootpikes there
> might be in a pulchritude[*].  I don't know why the timeout is set that
> low, but I would have thought a value more like 1800 (30 min) would be
> more reasonable for most applications, perhaps with a comment about the
> risk of excessive memory consumption in a high-traffic environment.
> Also, having the error message speculate as to the possibility of a
> session timeout might be helpful, if that's possible.  Otherwise, the
> error message makes it seem like an application bug.
> Anton
> [*] Any resemblance to actual Imperial units is entirely coincidental,
> but would not be entirely surprising, considering.

Jay McCarthy <jay at cs.brown.edu>

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