The CAS sample requires that you run both a CAS server and CAS client. It isn't included in the distribution so you should check out
the project code as described in the introduction. You'll find the relevant files under the
sample/cas
directory. There's also a Readme.txt
file in there which explains how to run
both the server and the client directly from the source tree, complete with SSL support. You have to download the CAS Server web application
(a war file) from the CAS site and drop it into the samples/cas/server
directory.