Most of our unit tests use the client API to test our server-side code. The best code we have right now is probably in WebServerTests.cpp (in the net/tests source directory).

There are two methods available for clients: synchronous and asynchronous. For synchronous, you just need to construct an HTTPRequest object, set the appropriate fields, and call HTTPRequest::send(). You can then create an empty HTTPResponse object and call receive() to get the response from the server. For asynchronous, you can use an HTTPRequestWriter class & specify a callback to use after the request has been delivered. Normally, the callback would be a function that uses an HTTPResponseReader to asynchronously parse the response.

I know.. Ideally we would have a tutorial for this, but unfortunately it just hasn't been a high-enough priority yet.. ;-)