基于中控考勤机SDK开发的考勤客户端，通过tcp方式去连接考勤机，有员工考勤时，会自动回调事件-Client based on the attendance of the control time attendance SDK development, the via tcp way to connect the attendance, staff attendance, automatic callback event

基于TCP socket的video/audio chat客户端程序，覆盖了socket, directx camera capture, audio play back-TCP socket on the video/audio chat client, covering the socket, directx camera capture, audio play back