swf output for wms query

[assefa]

original e-mail from Bart (Bart van den Eijnden 
<bart.van.den.eijnden@geodan.nl>)

I get an internal server error (500). In the Apache error log it says:
[Thu Jul 15 15:49:50 2004] [error] [client 192.168.3.4] Premature end of  
script headers: mapserv_43.exe

I tested with a WMS request:
http://www.vz.geodan.nl:1112/cgi-bin/mapserv_43.exe?
map=/ms4w_20/apps/general/map/gemeentes.map&request=GetMap&bbox=100000,400000,2
00000,500000&width=500&height=500&format=application/x-shockwave-
flash&version=1.1.1&srs=EPSG:28992&layers=Gemeentes

I added the following OUTPUTFORMAT to my MAP file:
 OUTPUTFORMAT
    NAME swf
    MIMETYPE "application/x-shockwave-flash"
    DRIVER swf
    IMAGEMODE PC256
    FORMATOPTION "OUTPUT_MOVIE=MULTIPLE"
 END

And my LAYER has:
        METADATA
          WMS_TITLE "Gemeentes"
          WFS_TITLE "Gemeentes"
          SWFDUMPATTRIBUTES "GEMNAAM"
        END

[assefa]

The main problem was when sending the swf directy to the browser. The fix is 
to send an html with instrcutions to load a temporary swf file created. The 
user has to set properly the web's imagepath and imageurl.

Added also some ActionScript in the main movie to load layers's movie (for 
FORMATOPTION "OUTPUT_MOVIE=MULTIPLE").

I ahev tested it with a wms request as well as a mapserv cgi (mode=map) 
request.

 I will let Bart do some testing/comments. 

[dmorissette]

Assefa, a WMS GetMap request MUST respond with the format that was requested, in
this case application/x-shockwave-flash.  Returning an HTML with a link to the
SWF file is not appropriate for WMS. The only valid options are to return the
SWF directly or to remove that format from the list in the Capabilities.

[assefa]

Fixed : call msIO_needBinaryStdio() before starting to write binary data to 
stdout.