Bjørn, Thanks for the info. I'm not sure if I should file an Issue on the doc for the broken link, or on the demo for the missing file (no public GitHub repository for the demo?).
While testing the GeoMoose/OpenLayers client, I did see foreign WMS servers (not under my control) cause a "Cross-Origin Request Blocked" error. This was unexpected as I had encoded the XML SLD document and included it in the GET request parameter SLD_BODY. I could understand getting the error if I had used the alternative method of instead using SLD=http://... to reference an SLD document somewhere on the web, but I did not use that method. I even removed the reference links in the header of the SLD, but I got the same error. Thanks again! Brent Fraser ---------------------------------------- From: "Bjørn Ove Grøtan" <bjorn....@grotan.com> Sent: 12/31/22 5:47 AM To: Brent Fraser <bfra...@geoanalytic.com> Cc: "mapserver-users@lists.osgeo.org" <mapserver-users@lists.osgeo.org> Subject: Re: [MapServer-users] Link in SLD doc returns an exception Brent Fraser: > Hi All, > > I'm experimenting with SLD and reading the MapServer doc. On the SLD page > under Server Side Support, it says "Test the remote SLD request" with a link > to > > https://demo.mapserver.org/cgi-bin/wms?SERVICE=wms&VERSION=1.1.1&REQUEST=GetMap&LAYERS=country_bounds&FORMAT=png&WIDTH=400&HEIGHT=300&SRS=EPSG:4326&STYLES=&BBOX=-180.0,-90.0,180.0,90.0&TRANSPARENT=TRUE&SLD=https://demo.mapserver.org/ogc-demos/map/sld/sld_line_simple.xml > > The link looks good but it returns an exception: > > <?xml version='1.0' encoding="UTF-8" standalone="no" ?> > <!DOCTYPE ServiceExceptionReport SYSTEM > "http://schemas.opengis.net/wms/1.1.1/exception_1_1_1.dtd";> > <ServiceExceptionReport version="1.1.1"> > <ServiceException> > msSLDApplySLDURL: WMS server error. Could not open SLD > https://demo.mapserver.org/ogc-demos/map/sld/sld_line_simple.xml and save it > in a temporary file. Please make sure that the sld url is valid and that the > temporary path is set. The temporary path can be defined for example by > setting TEMPPATH in the map file. Please check the MapServer documentation on > temporary path settings. > msHTTPExecuteRequests(): HTTP request error. HTTP GET request failed with > status 404 () for > https://demo.mapserver.org/ogc-demos/map/sld/sld_line_simple.xml > </ServiceException> > </ServiceExceptionReport> > > Is the demo in a repo somewhere or does someone have some insight? Thanks! The error message is correct, https://demo.mapserver.org/ogc-demos/map/sld/sld_line_simple.xml returns a 404 Page not found, The root folder at /ogc-demos/ has been removed at some point. Be aware though, that not all WMS-servers allow (by configuration) external hosted SLD-files due to potential XXE (XML eXternal Entity) vulnerability, Also might be of interrest: the Mapserver implementation of GetStyle-request (return SLD for a given layer) has some limitations on line-symbols where images (png) are placed along the line symbol, and same with polygon fills using a repeated png-file as fill - but simple polygon symbologies with a solid fill color works as expected. -- Kind regards Bjørn Ove Grøtan
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