[plt-scheme] Can't get PLT web-server to work with MrEd

That error message suggests that the web server is using mzscheme to
start, not mred.

Robby

At Sat, 8 Apr 2006 12:57:42 -0700 (PDT), Danny Yoo wrote:
> > Using the plt web-server, I would like for users to be able to upload an
> > image file to the server, then I would resize the image to fit the
> > required dimensions for the site. Now AFAIK, the only way I can process
> > an image is using the bitmap% object which is available only with MrEd.
> > The docs for the web-server state that "Servlets can use the full MrEd
> > functionality" when started with the command "web-server". But when I do
> > this, and try to make a button% object, I get reference to undefined
> > identifier errors.
> >
> > Can anyone help me with what I'm doing wrong? I'm using PLT version 301.
> 
> 
> Hi Eric,
> 
> Ok, I can duplicate your problem with module-based servlets.
> 
> Here's the sample servlet I'm testing, and the error message I see.  I
> haven't investigated this yet, but hope that this will help others figure
> out what's going on.  (I have go to lunch right now!  *grin*)
> 
> ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
> (module test mzscheme
>   (require (lib "mred.ss" "mred"))
>   (provide interface-version timeout start)
>   (define interface-version 'v1)
>   (define timeout +inf.0)
>   (define (start initial-request)
>     (list #"text/plain"
>           (format "~a" button%))))
> ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
> 
> 
> I get a 500 with the following error:
> 
> ---------------------------------------------------------------------------
> Servlet didn't load.
> dynamic-require: unknown module: #%mred-kernel
> 
>  === context ===
> /export/home/dyoo/local/plt/collects/web-server/dispatch-servlets.ss:285:4:
> lo
> ad-servlet/path
> /export/home/dyoo/local/plt/collects/web-server/dispatch-servlets.ss:268:4:
> re
> load-servlet-script
> /export/home/dyoo/local/plt/collects/web-server/cache-table.ss:38:46
> /export/home/dyoo/local/plt/collects/web-server/cache-table.ss:38:46
> /export/home/dyoo/local/plt/collects/web-server/cache-table.ss:30:13
> cache-table-lookup!
> cache-table-lookup!
> body
> /export/home/dyoo/local/plt/collects/web-server/dispatch-servlets.ss:59:4:
> ser
> vlet-content-producer/path
> /export/home/dyoo/local/plt/collects/web-server/dispatch-sequencer.ss:9:4:
> loo
> p
> loop
> loop
> loop
> /export/home/dyoo/local/plt/collects/web-server/web-server-unit.ss:105:8:
> conn
> ection-loop
> /export/home/dyoo/local/plt/collects/web-server/web-server-unit.ss:93:
> --------------------------------------------------------------------------
> 
> _________________________________________________
>   For list-related administrative tasks:
>   http://list.cs.brown.edu/mailman/listinfo/plt-scheme