Ian,

> > You will have to pass byte arrays to Socket>>setOption:to:
> [...]
> > 	socket setOption: 'IP_ADD_MEMBERSHIP'
> > 		to: (ByteArray with: 234 with: 5 with: 6 with: 7
> > 		               with: 1 with: 2 with: 3 with. 4).
> 
> In Unix you *must* pass all 8 bytes.  (No biggie: the address 
> returned by localHostAddress will probably work just fine.) 

I will change the windows code accordingly if noone objects _very_
loudly.

Cheers,
  - Andreas