[Geoserver-devel] [JIRA] (GEOS-11023) GetMap SLD param to external service style document does respect external graphic relative paths

_Failed_to_Retrieve · June 12, 2023, 5:53am

Jody Garnett created an issue

GetMap SLD param to external service style document does respect external graphic relative paths

Issue Type:	Bug
Assignee:	Unassigned
Components:	styling, WMS
Created:	12/Jun/23 7:53 AM
Priority:	Low
Reporter:	Jody Garnett

This bug report reflects functionality that is not behaving as expected, probably due to not being implemented rather than a failure in the code as written.

When using GeoServer GetMap SLD parameter to work with an external SLD any external graphic references should be relative to the location of the external document.

This can be observed using GeoServer to reference a style hosted by another GeoServer:

https://remote.service.net/geoserver/styles/grass_poly.sld
This document can be accessed and reviewed in a browser and includes a reference to:

&lt;ExternalGraphic&gt;
  &lt;OnlineResource xlink:type="simple" xlink:href="grass_fill.png"/&gt;
  &lt;Format&gt;image/png&lt;/Format&gt;
&lt;/ExternalGraphic&gt;

https://remote.service.net/geoserver/styles/grass_fill.png
This icon can be accessed and reviewed in the browser

However when using this document as a SLD reference in another GeoServer parsing the document fails:
java.net.MalformedURLException: no protocol: grass_fill.png

In html parsing terms the document base url should be [https://remote.service.net/geoserver/styles](https://remote.service.net/geoserver/styles) allowing the location of the relative external graphic reference to be maintained.
In the extreme case a folder of icons may be setup along side a library of styles resulting in relative paths to be resolved against the SLD document base location.
https:/styles.remote.net/icons/grass_fill.png
https:/styles.remote.net/ariculture/grass_poly.png

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