使用Visual Studio C++ 6.0和网络接口套接字Socket进行Windows环境下的网络编程，运用原始嵌套字RAW_SOCKET从IP层开始构造整个ICMP报文，通过ICMP协议所提供的回送请求(echo request)和回送应答(echo reply)这两种报文实现检测目的站的可达性与状态-The use of Visual Studio C++ 6.0 and the network interface to Windows Sockets Socket network programming environment, using the original nested RAW_SOCKET word from the IP layer started to construct the entire ICMP message, through the ICMP protocol provided loopback request (echo request) and return response (echo reply) packet realize these two stations can detect the purpose and status