The formal way to specify the URL of a directory or concrete resource in a Geometry Service repository is as follows:
gs://host.of.geometry.service[:port]/name[:revision]/name[:revision]/...etc[:revision}[/]
[port] Port is an optional paramater, default is 5309.
[revision] Revision is an optional per path step parameter, default is HEAD.
[/] A trailing backslash indicates a directory, whereas the absense of a backslash indicates a concrete resource.
Examples
Requesting
gs://geoserv.brlcad.org/wheeled/civilian/cars/sports/lotus/
would return a directory listing.
Where as requesting
gs://geoserv.brlcad.org/wheeled/civilian/cars/sports/lotus/elise.g
would return valid geometry.
and requesting
gs://geoserv.brlcad.org/wheeled/civilian/cars/sports/lotus/elise.png
would return a PNG image of the associated geometry.