The examples are a simple client and server designed to talk to each other. They should work by just specifying your application credentials from the Pusher Dashboard
The server will send messages you type to the given channel and event; the client will receive them. Sending bye will terminate both.
Running the examples without arguments will list the options. Be sure to set the cluster if it is not mt1.
It may be possible to use the client to access existing public endpoints, but customisation is recommended.