iocp 작업 스레드에서 처음 수신할때만 버퍼에 데이터가 안쌓입니다.

			bResult = GetQueuedCompletionStatus(hCompletionPort, &Recvsz, &ClntSock, (LPOVERLAPPED*)&RecvBuff, INFINITE);
			if (bResult == FALSE)
			{
				if (GetLastError() != 64)
				{
					//클라이언트 소켓에대한 종료 코드
					printf("Error Thread : GetQueueCompletionStatus( %d )\\n", GetLastError());
					return 0;
				}
			}
			if (Recvsz == 0)
			{
				closesocket(ClntSock);
				continue;
			}
 
 
			//해쉬맵에 추가
			printf("1: %s %d\n", RecvBuff->Data, Recvsz);
			memset(RecvBuff, 0, sizeof(RECVBUFF));
			RecvBuff->Wsabuf.len = RECVBUFFSIZE;
			Recvflag = 0;
			RecvBuff->Wsabuf.buf = RecvBuff->Data;
			if (WSARecv(ClntSock, &RecvBuff->Wsabuf, 1, NULL, &Recvflag, &RecvBuff->Overlapp, NULL))
			{
				if (WSAGetLastError() != WSA_IO_PENDING)
				{
					closesocket(ClntSock);
					printf("recv fail %d\n", WSAGetLastError());
				}
			}