说明：  CUdpSocket是为了简化发送，解析UDP 数据报所提供的一个基类。这个类封装了基于SOCK_DGRAM的大部分基本操作。这个类提供两种工作模式，一种是和实际处理UDP 数据报的功能紧耦合，这需要通过继承实现，同时设置workmode 为auto_receive（参见SetWorkdMode），另外一种是直接作为单独对象出现，此时用户需要使用Recv成员函数自己处理数据的接收。
(CUdpSocket is to simplify this, the analytical data reported by the UDP with a base class. This type of packaging based SOCK_DGRAM the most basic operation. This provides two types of work, is a practical and UDP data processing function of tight coupling, it needs to achieve through inheritance, as set workmode auto_receive (see SetWorkdMode), the other is directly emerging as a separate object, users need to use this member function since Recv others receiving data processing.)