> My next problem is this - MCAST_JOIN_GROUP requires me to pass a GROUP_REQ 
> structure which contains the following member:
>
> gr_interface
> The interface index of the local interface on which the multicast group 
> should be joined or dropped.
>
> Is this something I can retrieve using ICS or do I have to call 
> GetAdaptersAddresses, parse the output and find the appropriate network 
> interface?

You have to use IpHelper functions like GetAdaptersAddresses.

--
francois.pie...@overbyte.be
The author of the freeware multi-tier middleware MidWare
The author of the freeware Internet Component Suite (ICS)
http://www.overbyte.be

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