Mapserver's WFS-client problems - Can't get it to work

[Alexandre Florio]

    I'm having problems while trying to access a WFS-server (Geoserver 1.2.0-rc2) through Mapserver's WFS-client support.  Mapserver's version is 4.2.1.

    This is how my WFS-client layer is set up:

LAYER
  NAME "acervo_espacial"
  TYPE POLYGON
  CONNECTIONTYPE WFS
  CONNECTION "http://localhost:8080/geoserver/wfs"
  STATUS ON
  METADATA
    "wfs_version" "1.0.0"
    "wfs_service" "WFS"
    "wfs_typename" "gisplan:acervo_espacial"
  END
  PROJECTION
    "init=epsg:4291"
  END
END

    This is the error message from Mapserver:

msDrawMap(): Image handling error. Failed to draw layer named 'acervo_espacial'.
msWFSLayerWhichShapes(): WFS connection error. WFS request produced unexpected output (junk?) for layer acervo_espacial.

    I have already tried setting up the layer passing the WFS parameters (version and typename) directly in the CONNECTION parameter, via GET, without success.
    The "junk" that Mapserver talks about is a .gml file containing a "ServiceExceptionReport" node:

<?xml version="1.0" ?>
<ServiceExceptionReport
   version="1.2.0"
   xmlns="http://www.opengis.net/ogc"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://www.opengis.net/ogc http://schemas.opengis.net/wfs/1.0.0/OGC-exception.xsd">
   <ServiceException locator="org.vfny.geoserver.requests.readers.XmlRequestReader">
      XML getFeature request SAX parsing error: org.xml.sax.SAXException: Attempted to construct illegal filter: Got to the end state of an incomplete filter, current state is rightValue
(java stack trace)
   </ServiceException>
</ServiceExceptionReport>

    Geoserver returns correct GML when I send a 'GetFeature' request using a browser:
    (http://localhost:8080/geoserver/wfs?request=GetFeature&typename=gisplan:acervo_espacial returns valid GML)

    This is the request that Mapserver is sending to Geoserver (I got it using netcat, listening in a different port set up in the CONNECTION parameter):

POST /geoserver/wfs HTTP/1.1
Host: localhost:5555
Pragma: no-cache
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */*
Content-Type: text/xml
Content-Length: 305

<?xml version="1.0" ?>
<GetFeature
service="WFS"
version="1.0.0"
outputFormat="GML2">
<Query typeName="gisplan:acervo_espacial">
<Filter>
<BBOX>
<PropertyName>Geometry</PropertyName>
<Box>
<coordinates>-77.038333,-37.435044 -31.038333,8.511622</coordinates>
</Box>
</BBOX>
</Filter></Query>
</GetFeature>

    Which seems good to me, but Geoserver complains that the Filter is invalid (see the exception description above).
    Does anybody know what can be wrong here?


Alexandre