通信測試_,IcmpCreateFile,IcmpCloseHandle,IcmpSendEcho,WSAGetLastError,WSAStartup,WSACleanup,gethostname,gethostbyname,GetHost,GetVaradd,GetAddr,inet_addr,GetTypeSize,inet_ntoa,GetTickCount,QueryPerformanceFrequency,QueryPerformanceCounter,P