[Geoserver-users] Redirecting from external server to web application passing through a Geoserver --> Version problem?

GeoServer GeoServer User
1

Hi all,

I have a problem that concern the data that are published using a remote Web
Map Service.

Context:
I would like to stream data from the FAO Geonetwork to a web application
using a Geoserver (because FAO doesn't offer a https connection, which is
compulsory in our web application, while Geoserver does).
Doing this, the data is shown on map only at small zooms. When the zoom is
too high, data disappear.
Data provided by FAO is always visible at all zooms if streamed through
Google Chrome. So, the problem comes when data is bridged by the Geoserver.

So, this is the problem that I cannot solve.

Here some facts around:
The wms link from FAO is this:
http://data.fao.org/maps/wms?styles=geonetwork_sea_7379_style&LAYERS=GEONETWORK%3Asea_7379&FORMAT=image%2Fpng&TRANSPARENT=TRUE&VERSION=1.3.0&LANGUAGE=eng&EXCEPTIONS=INIMAGE&SERVICE=WMS&REQUEST=GetMap&CRS=EPSG%3A4326&BBOX=5.519599914545,30.758972167957,8.25519561767,36.658630371082&WIDTH=537&HEIGHT=249

This link has a very high zoom and can be used to check the problem.
As you can see, they state the version is 1.3.0. This is crucial, because if
I change it to 1.1.0 the data is not shown after a certain zoom like when we
stream the data passing through our geoserver. So, the problem appears also
without the use of Geoserver, if the version is not set to 1.3.0. I
therefore think that the problem must be linked to the use of different
versions of WMS requests that are not well managed by geoserver.

In synthesis:
If I stream the data from the FAO server and I set version=1.3.0, the data
is always shown at all zooms (on the browser). If I change the version to
1.1.0, the data is not streamed at high zooms.
If I stream the data from our geoserver and I set version=1.3.0, the data is
only shown for small zooms. Changing the version actually doesn't affect the
way the data is shown.

Can you help me understanding whether geoserver can be set in a way that
might force data to be visualized without problems please?
Keep in mind that our geoserver allows 1.3.0 WMS requests and that the layer
that I have redirected to the geoserver supports 1.3.0 WMS requests.

Thanks for your help
Antonio

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2

On Wed, Nov 22, 2017 at 5:06 PM, benve <antonio.benvenuti@anonymised.com>
wrote:

Data provided by FAO is always visible at all zooms if streamed through
Google Chrome. So, the problem comes when data is bridged by the Geoserver.

When you say "bridged by GeoServer"... do you mean you setup a WMS
cascading?
Also, what version of GeoServer are you using?

Cheers
Andrea

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3

Hi Andrea,

Yes. Exactly a wms cascading setup. The Geoserver version is 2.11-SNAPSHOT.

Let me know if you have any idea. Thanks for your help.
Antonio

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