Request for UDP Help

Hi:

I would like to ask all of you if there is any reference code relating
to the following:

1) I need a server to broadcast a general multicast packet to all
listening CLients
2) CLients repsond back and both switch to TCP

This sounds trivial but trust me I can't find much on this.
I find a lot of stuff on UDP clients initializing the conversation but
not the server.

Any help would be appreciated. (I am trying to do this in C not C++).


Thanks

Ali

.

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