Flash TCP Test Port

I need a simple "proof of concept": a flast application that can test if a port number is opened (listening) on a host. I mus pass the port and the host address to the flash application as parameters and receive "Open" or "Closed" as result. If everything goes fine, we are going to hire a more complex project. You don't have to worry about a beautiful interface, it's just a simple proof of conecept.