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<p>Lars,</p>
<p>I believe the service you request doesn't implement WFS 1.1
properly.</p>
<p>Trying this</p>
<p>./mapserv
QUERY_STRING="map=wfs.map&SRSNAME=EPSG:3857&SERVICE=WFS&VERSION=1.1.0&REQUEST=GetFeature&BBOX=791880.72463009,6321925.37255709,792929.63787777,6322786.10157277&TYPENAME=TestLayer"
<br>
</p>
<p>I see that GDAL does:</p>
<p>VSICURL: Start download for
<a class="moz-txt-link-freetext" href="http://sg.geodatenzentrum.de/wfs_info?SERVICE=WFS&VERSION=1.1.0&MAXFEATURES=500&REQUEST=GetFeature&TYPENAME=info:dop&FILTER=%3CFilter%20xmlns%3D%22http:%2F%2Fwww.opengis.net%2Fogc%22%20xmlns:gml%3D%22http:%2F%2Fwww.opengis.net%2Fgml%22%3E%3CBBOX%3E%3CPropertyName%3Egeom%3C%2FPropertyName%3E%3Cgml:Box%3E%3Cgml:coordinates%3E362792.2015953020309098,5459899.7109905285760760%20363491.4383923375280574,5460477.4964771848171949%3C%2Fgml:coordinates%3E%3C%2Fgml:Box%3E%3C%2FBBOX%3E%3C%2FFilter%3E">http://sg.geodatenzentrum.de/wfs_info?SERVICE=WFS&VERSION=1.1.0&MAXFEATURES=500&REQUEST=GetFeature&TYPENAME=info:dop&FILTER=%3CFilter%20xmlns%3D%22http:%2F%2Fwww.opengis.net%2Fogc%22%20xmlns:gml%3D%22http:%2F%2Fwww.opengis.net%2Fgml%22%3E%3CBBOX%3E%3CPropertyName%3Egeom%3C%2FPropertyName%3E%3Cgml:Box%3E%3Cgml:coordinates%3E362792.2015953020309098,5459899.7109905285760760%20363491.4383923375280574,5460477.4964771848171949%3C%2Fgml:coordinates%3E%3C%2Fgml:Box%3E%3C%2FBBOX%3E%3C%2FFilter%3E</a><br>
</p>
<p>So Mapserver has transmitted to GDAL a BBOX filter in epsg:25832
(which is the native SRS of the layer) that is the reprojection of
your source BBOX from EPSG:3857. All things are good up to that
point.<br>
</p>
<p>But the server returns an empty response.</p>
<p>Tweaking it manually to include a srsName="EPSG:25832" attribute
in gml:Box returns a response with 2 features<br>
</p>
<p><a class="moz-txt-link-freetext" href="http://sg.geodatenzentrum.de/wfs_info?SERVICE=WFS&VERSION=1.1.0&MAXFEATURES=500&REQUEST=GetFeature&TYPENAME=info:dop&FILTER=%3CFilter%20xmlns%3D%22http:%2F%2Fwww.opengis.net%2Fogc%22%20xmlns:gml%3D%22http:%2F%2Fwww.opengis.net%2Fgml%22%3E%3CBBOX%3E%3CPropertyName%3Egeom%3C%2FPropertyName%3E%3Cgml:Box%20srsName=%22EPSG:25832%22%3E%3Cgml:coordinates%3E362792.2015953020309098,5459899.7109905285760760%20363491.4383923375280574,5460477.4964771848171949%3C%2Fgml:coordinates%3E%3C%2Fgml:Box%3E%3C%2FBBOX%3E%3C%2FFilter%3E">http://sg.geodatenzentrum.de/wfs_info?SERVICE=WFS&VERSION=1.1.0&MAXFEATURES=500&REQUEST=GetFeature&TYPENAME=info:dop&FILTER=%3CFilter%20xmlns%3D%22http:%2F%2Fwww.opengis.net%2Fogc%22%20xmlns:gml%3D%22http:%2F%2Fwww.opengis.net%2Fgml%22%3E%3CBBOX%3E%3CPropertyName%3Egeom%3C%2FPropertyName%3E%3Cgml:Box%20srsName=%22EPSG:25832%22%3E%3Cgml:coordinates%3E362792.2015953020309098,5459899.7109905285760760%20363491.4383923375280574,5460477.4964771848171949%3C%2Fgml:coordinates%3E%3C%2Fgml:Box%3E%3C%2FBBOX%3E%3C%2FFilter%3E</a></p>
<p>But we shouldn't have to do this has a missing srsName should be
interpretated as the defaultSRS according to my understand of the
WFS 1.1 spec<br>
</p>
<p>You can however tweak the <URL> element in
wfs-request-dop-bkg-age and add "&SRSNAME=EPSG:25832" to
it (since it is the defaultSRS of all the layers of the service),
and then GDAL will forward it.<br>
</p>
<p>Even<br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">Le 28/05/2021 à 14:11, Lars Fricke a
écrit :<br>
</div>
<blockquote type="cite"
cite="mid:c3a698a9-d660-009d-b65b-1372ddadb48e@skendata.de">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<font face="Helvetica, Arial, sans-serif">No problem.
Unfortunately, testing native WFS did not work because it does
not properly support cascading wfs with different srs (see my
other post).<br>
<br>
Thanks for looking into this.<br>
</font>
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<div class="moz-cite-prefix">Am 28.05.21 um 13:55 schrieb Even
Rouault:<br>
</div>
<blockquote type="cite"
cite="mid:4fa6a6c7-38a4-76d9-f49c-6870eb97471b@spatialys.com">
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8">
<p>oops, sorry, didn't notice 😅</p>
<div class="moz-cite-prefix">Le 28/05/2021 à 13:52, Lars Fricke
a écrit :<br>
</div>
<blockquote type="cite"
cite="mid:10b1dc3f-ed06-33d2-f2d1-15def00d5ac7@skendata.de">
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8">
<font face="Helvetica, Arial, sans-serif">I put in the files
as attach. Is that filtered? </font><br>
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<div class="moz-cite-prefix">Am 28.05.21 um 13:43 schrieb Even
Rouault:<br>
</div>
<blockquote type="cite"
cite="mid:e0823aea-0e47-5272-4cb6-46aba53b061b@spatialys.com">
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8">
<p>Please include your mapfile and the
wfs-request-testlayer.xml file to reproduce. I'm confused
by the mapfile you posted yesterday that uses epsg:25832
and the fact that GDAL through mapserver would issue a
GetFeature in EPSG:3857 as suggested below. I can't see
how that could happen (given the MapServer/GDAL
integration, GDAL should always request in the native SRS
of the layer and MapServer will do the reprojection to the
SRSNAME of the WFS request)<br>
</p>
<p>But as Daniel suggested using the CONNECTION WFS is
probably a better way of doing what you want<br>
</p>
<div class="moz-cite-prefix">Le 28/05/2021 à 13:13, Lars
Fricke via mapserver-users a écrit :<br>
</div>
<blockquote type="cite"
cite="mid:2d0c3bab-d3a8-972a-13da-b07a24baa8e9@skendata.de">
So here is the working not working setup. Unfortunately
the working OGR WFS client layers are all private so I can
not share them.<br>
<br>
This call delivers objects as expected:<br>
<a class="moz-txt-link-freetext"
href="http://localhost:8181/cgi-bin/mapserv?map=/var/www/html/wfs.map&SRSNAME=EPSG:3857&SERVICE=WFS&VERSION=1.1.0&REQUEST=GetFeature&Maxfeatures=10&TYPENAME=TestLayer"
moz-do-not-send="true">http://localhost:8181/cgi-bin/mapserv?map=/var/www/html/wfs.map&SRSNAME=EPSG:3857&SERVICE=WFS&VERSION=1.1.0&REQUEST=GetFeature&Maxfeatures=10&TYPENAME=TestLayer</a><br>
This one, too:<br>
<a class="moz-txt-link-freetext"
href="http://localhost:8181/cgi-bin/mapserv?map=/var/www/html/wfs.map&SRSNAME=EPSG:3857&SERVICE=WFS&VERSION=1.1.0&REQUEST=GetFeature&Maxfeatures=10&TYPENAME=TestLayer"
moz-do-not-send="true">http://localhost:8181/cgi-bin/mapserv?map=/var/www/html/wfs.map&SRSNAME=EPSG:3857&SERVICE=WFS&VERSION=1.1.0&REQUEST=GetFeature&Maxfeatures=10&TYPENAME=TestLayer</a><br>
<br>
Data is delivered in the correct srs (verified manually
with QGIS).<br>
<br>
This call doesn't work as described before as BBOX is not
transmitted to external server:<br>
<a class="moz-txt-link-freetext"
href="http://localhost:8181/cgi-bin/mapserv?map=/var/www/html/wfs.map&SRSNAME=EPSG:3857&SERVICE=WFS&VERSION=1.0.0&REQUEST=GetFeature&BBOX=791880.72463009,6321925.37255709,792929.63787777,6322786.10157277&TYPENAME=TestLayer"
moz-do-not-send="true">http://localhost:8181/cgi-bin/mapserv?map=/var/www/html/wfs.map&SRSNAME=EPSG:3857&SERVICE=WFS&VERSION=1.0.0&REQUEST=GetFeature&BBOX=791880.72463009,6321925.37255709,792929.63787777,6322786.10157277&TYPENAME=TestLayer</a><br>
<br>
While the same direct call works:<br>
<a class="moz-txt-link-freetext"
href="http://sg.geodatenzentrum.de/wfs_info?SRSNAME=EPSG:3857&SERVICE=WFS&VERSION=1.0.0&REQUEST=GetFeature&BBOX=791880.72463009,6321925.37255709,792929.63787777,6322786.10157277&TYPENAME=info:dop"
moz-do-not-send="true">http://sg.geodatenzentrum.de/wfs_info?SRSNAME=EPSG:3857&SERVICE=WFS&VERSION=1.0.0&REQUEST=GetFeature&BBOX=791880.72463009,6321925.37255709,792929.63787777,6322786.10157277&TYPENAME=info:dop</a><br>
(funny, epsg 3857 is not in the capabilities but works
anyhow)<br>
<br>
I hope you can find out what is going wrong. Thanks so
much for looking into this!<br>
<br>
Best<br>
<br>
Lars<br>
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<div class="moz-cite-prefix">Am 27.05.21 um 18:28 schrieb
Rahkonen Jukka (MML):<br>
</div>
<blockquote type="cite"
cite="mid:c7eac89bb6fa489babf8e66162cb882f@maanmittauslaitos.fi">
<meta name="Generator" content="Microsoft Word 15
(filtered medium)">
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<p class="MsoNormal"><span>Hi,</span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal"><span lang="EN-US">Have you
already tried to use WFS connection instead of OGR
connection?</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal"><span>-Jukka Rahkonen-</span></p>
<p class="MsoNormal"><span> </span></p>
<div>
<div>
<p class="MsoNormal"><b>Lähettäjä:</b>
mapserver-users <a
class="moz-txt-link-rfc2396E"
href="mailto:mapserver-users-bounces@lists.osgeo.org"
moz-do-not-send="true"><mapserver-users-bounces@lists.osgeo.org></a>
<b>Puolesta </b>Lars Fricke<br>
<b>Lähetetty:</b> torstai 27. toukokuuta 2021
14.59<br>
<b>Vastaanottaja:</b> <a
class="moz-txt-link-abbreviated"
href="mailto:mapserver-users@lists.osgeo.org"
moz-do-not-send="true">mapserver-users@lists.osgeo.org</a><br>
<b>Aihe:</b> Re: [mapserver-users] WFS Client
returns data at random with very same call</p>
</div>
</div>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Dear all, <br>
I apologize for finding and posting bits and pieces
not all at one time. <br>
I fired up 'CONFIG "CPL_DEBUG" "ON"' and there I
see, that <br>
"""</p>
<div>
<div>
<p class="MsoNormal">HTTP: Fetch(<a
href="http://url-to-external-server?SERVICE=WFS&VERSION=1.1.0&MAXFEATURES=1000&REQUEST=GetFeature&TYPENAME=dop"
moz-do-not-send="true">http://url-to-external-server?SERVICE=WFS&VERSION=1.1.0&MAXFEATURES=1000&REQUEST=GetFeature&TYPENAME=dop</a>)<br>
"""<br>
So there is no BBOX. On other layers I see<br>
"""<br>
GDALOpen(/vsicurl_streaming/https:... <br>
"""<br>
with BBOX. <br>
No wonder I do not get reliable results if the
server is calling some 1000 whatsoever result
objects and starts filtering the bbox after. <br>
<br>
Any idea what is happening? Or is this something
for a GDAL thread?<br>
<br>
Best<br>
Lars</p>
</div>
<div>
<p class="MsoNormal"> </p>
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</blockquote>
<br>
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