UDP approach, Multicast_IOCP_CLIENT procedures, efficiency is pretty good.

Packet : 17869332multicast_iocp_client.zip filelist
UDP_Multicast_IOCP_CLIENT/
UDP_Multicast_IOCP_CLIENT/ReadMe.txt
UDP_Multicast_IOCP_CLIENT/StdAfx.cpp
UDP_Multicast_IOCP_CLIENT/StdAfx.h
UDP_Multicast_IOCP_CLIENT/UDP_Multicast_IOCP_CLIENT.cpp
UDP_Multicast_IOCP_CLIENT/UDP_Multicast_IOCP_CLIENT.dsp
UDP_Multicast_IOCP_CLIENT/UDP_Multicast_IOCP_CLIENT.dsw
UDP_Multicast_IOCP_CLIENT/UDP_Multicast_IOCP_SERVER/
UDP_Multicast_IOCP_CLIENT/UDP_Multicast_IOCP_SERVER/ReadMe.txt
UDP_Multicast_IOCP_CLIENT/UDP_Multicast_IOCP_SERVER/StdAfx.cpp
UDP_Multicast_IOCP_CLIENT/UDP_Multicast_IOCP_SERVER/StdAfx.h
UDP_Multicast_IOCP_CLIENT/UDP_Multicast_IOCP_SERVER/UDP_Multicast_IOCP_SERVER.cpp
UDP_Multicast_IOCP_CLIENT/UDP_Multicast_IOCP_SERVER/UDP_Multicast_IOCP_SERVER.dsp

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