[plt-scheme] PLT 360 Web-Server Hangs on Multiple Requests

From: Noel Welsh (noelwelsh at gmail.com)
Date: Fri Oct 19 12:14:32 EDT 2007

Hi Eric,

I'm afraid the best advice I can give is to upgrade to 371, as it
incorporates many important improvements and fixes (and I've even
encourage you to try one of the nightly builds).  It shouldn't be that
onerous.  The conversion from unit to module based servlets should be
straightforward, and you get better error checking with modules, so it
is a bit of a win.  To load the web server configuration you can take
example code from instaweb.  Search for





On 10/19/07, Eric Domeshek <domeshek at stottlerhenke.com> wrote:
> Gang,
> I have used PLT 360 to build an elaborate web application.  I have
> noticed that if, from a particular page, I click a link that invokes an
> extended computation/display, and before the new page comes up, I click
> another link on the original page, then the server seems to hang and
> never respond to either click.  All these links are generated using
> embed/url inside a send/suspend/dispatch.  I've been using Firefox 2 as
> my browser.
> Before I get all hung about about possible threading issues and the
> possibility of unsafe data modifications, I thought I'd ask if there is
> a simpler explanation (and fix) or if anyone else has seen and can
> account for this behavior.
> Also, as an aside, I've downloaded PLT 371 and considered upgrading, but
> it doesn't appear to be a smooth path, since many things have changed
> (but I'm not sure the docs have kept up).  The way I set my
> configuration no longer works (I think the 'load-configuration' function
> is gone and I can't figure out what has replaced it).  I also think I
> read in a post to this list that unit-based servlets are no longer
> supported (which is how I've built my two major servlets).
> Anyway, thanks for any help or pointers you folks can offer...
> --Eric
> ====================================================================
> Eric Domeshek                      Phone: 617-616-1291
> AI Project Manager                   Fax: 617-616-1290
> Stottler Henke Associates, Inc.    EMail: domeshek at stottlerhenke.com
> 48 Grove St., Somerville, MA 02144   Web: www.stottlerhenke.com
> ====================================================================

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