> I have a server with an UDP socket listening.
> Some Clients connect with the Ip address of the server : Direct 
> Addressing.
> Some Clients do not know the Ip address of the server, therefore 
> they connect by sending a broadcast.
> In OnDataAvailable event, i would like to know which Clients have 
> been connected through a broadcast.

I don't believe there is anything in the IP protocol that will identify a
broadcast.  So you can either arrange the clients tell you as part of the data
you send, use a different port for broadcasts, or keep track of the IP
addresses locally (if you know already). 

In DataAvailable, you can use ReceiveFrom the get the IP address of the remote


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