Class/Interface Confusion with IcePack

I'm digging around with IcePack since I have some free time on my hands and I have a question.

My original SLICE implementation for my code is like this:

#ifndef JSOCKETS_ICE
#define JSOCKETS_ICE

sequence<byte> ByteSeq;
interface jSockets
{
	ByteSeq execute(ByteSeq command);
};

#endif

My server and client actually works. But now I'm thinking of implementing it as a Windows service. The ICE documentation points to IcePack, unfortunately I'm getting overwhelmed (confused) with the official documentation so I went and look at the demo\IcePack\simple source codes.

What surprised me is that the SLICE definition actually goes like this:

#ifndef HELLO_ICE
#define HELLO_ICE

class Hello
{
    nonmutating void sayHello();
    idempotent void shutdown();
};

#endif

Earlier samples, particularly the first one, uses the interface keyword but this one is different. I tried re-reading the SLICE documentation but I'm still at a loss on how to convert my exisiting interface definition to class definition.

I will of course continue with playing around with my code. I just hope someone can point me in the right direction before I waste a huge amount of time.

Thanks for any help.

r/Alex

edit: fixed spelling errors