Does not support layers of fixedWidth or fixedHeight

In the WMS 1.1.1 specification the following layer parameters are defined:

• fixedWidth 0, positive integer
  0: WMS can resize map to arbitrary width.
  nonzero: map has a fixed width that cannot be changed by the WMS.
• fixedHeight 0, positive integer
  0: WMS can resize map to arbitrary height.
  nonzero: map has a fixed height that cannot be changed by the WMS.
• noSubsets 0, 1
  0: WMS can map a subset of the full bounding box.
  1: WMS can only map the entire bounding box.

These layer attributes are optional and we have never seen them in the wild - until now:

• http://aes.gsfc.nasa.gov/cgi-bin/wms?%20SERVICE=WMS

The above service serves up fixed sizes images and has no ability to resize!
Our GetMap implementation should do one of two things:

• request this fixed size and then resample as required (so the GridCoverage returned exactly matches the request)
• retrive the GridCoverage as returned by the server and let the client code deal with it