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How to identify a service type

Question asked by hlward on Jul 13, 2017
Latest reply on Jul 19, 2017 by KGerrow-esristaff

We are working on a Geo Mashup project where we are given multiple data sources, including GeoServer WFS urls and Esri ArcGIS Feature Service urls. So we have the need to identify the service types (OGC WFS or Esri Feature Service) on the fly in the code.

Say we are given two ArcGIS Feature Service urls such as, or

1)  Is there any signature in the url content telling us they are Esri Feature Services?
2)  Can we tell the version of ArcGIS Servers were used to publish the services?
3)  How can we tell the difference between the first link and the second link?