how to send a direct video frame to multiple clients parllely using remoter server over gigabit ethernet

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MFC

hai friends,

i am doing one task to send video frame that captured through webcam in to the PC, that image is transfered to clients from remotely located server using GBit ethernet. that all coding should be done using UDP sockets in MFC application. i am building one server application i strucked in middle i am in confusion how to access multiple clients.
i used all system calls by inheriting from CAsyncsocket.
those are
1)socket()
2)bind()
3)receive from()
4)sendto()
5)close()

can any one plz help me with sample code to acess multiple clients.

plz it's urjent.

thanks,
sravani