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<hr><p align="left"><small>发信人: noid (小雪花), 信区: Winsock <br>

标  题: 使用ICMP.DLL的一段程序 <br>

发信站: BBS 水木清华站 (Sun Oct 18 22:13:14 1998) <br>

  <br>

下面是我用VC写的一段调用ICMP.DLL的程序,完成Ping的工作,贴出来和大家交流, <br>

希望能帮助一些人. <br>

  <br>

  <br>

#define PING_INVALID_ADDRESS    0 <br>

#define INVALID_ICMPHANDLE      1 <br>

#define PING_SUCCESS            2 <br>

  <br>

  <br>

DWORD DoPing(CString & address,int& RequestTime) <br>

{ <br>

        struct hostent *hp; <br>

        IPAddr Destination; <br>

  <br>

        hp = gethostbyname(address); <br>

        if(!hp) <br>

        { <br>

                Destination = inet_addr(address); <br>

                if(Destination == INADDR_NONE) <br>



                        return PING_INVALID_ADDRESS; <br>

        } <br>

        else <br>

                memcpy(&Destination ,hp->h_addr,hp->h_length); <br>

  <br>

        HANDLE ICMPHandle; <br>

        ICMP_ECHO_REPLY EchoReply; <br>

        DWORD resu; <br>

        char data[64]; <br>

        char buffer[200]; <br>

  <br>

        memset(data,'P',64); <br>

  <br>

        ICMPHandle = IcmpCreateFile(); <br>

        if(ICMPHandle == INVALID_HANDLE_VALUE) <br>

                return INVALID_ICMPHANDLE; <br>

  <br>

        resu = IcmpSendEcho(ICMPHandle,Destination,data,64,NULL,buffer,200,RequeestTime); <br>

        IcmpCloseHandle(ICMPHandle); <br>

  <br>

        if(resu == 0) <br>

        { <br>

        { <br>

                resu = GetLastError(); <br>

                return resu; <br>

        } <br>

        else <br>

        { <br>

                memcpy(&EchoReply,buffer,sizeof(ICMP_ECHO_REPLY)); <br>

  <br>

                if(EchoReply.Status == IP_SUCCESS) <br>

                { <br>

                        RequestTime = EchoReply.RoundTripTime; <br>

                        return PING_SUCCESS; <br>

                } <br>

                else <br>

                        return EchoReply.Status; <br>

        } <br>

} <br>

  <br>

-- <br>

  <br>

        I am not the only one. <br>

              But, I am the best. <br>

  <br>



※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: bamboo.cstnet.n] <br>

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