使用WSAAddressToString时的问题

Question

问题:我正在尝试使用WSAAddressToString函数来获取计算机的IP地址.我在他们的网站上浏览了msdn文档,结构中有太多结构,我觉得这是我出错的地方.代码在这里的pastebin链接中提供 .请让我知道我哪里错了.

解答:在代码中包含WSAStartup函数并在现有代码中进行一些修改后,问题得以解决.完整的代码在pastebin中,修改后的部分在下面.

     retval = WSAStartup(MAKEWORD(2, 2), &wsaData);
      if (retval != 0)
      {
          printf("WSAStartup() failed with error code %d\n", WSAGetLastError());
            return 1;
      }
   else
       printf("WSAStartup() is OK...\n");


        size=256;

        lp=pAddresses->FirstUnicastAddress->Address.lpSockaddr;
        size2=pAddresses->FirstUnicastAddress->Address.iSockaddrLength;
        if(WSAAddressToStringA(lp,size2,NULL,op,&size)!= 0)
        {
                    printf("This thing has failed \n");
                    printf("errordetail: %i\n", WSAGetLastError());

                    return 1;
        }
        else
                    printf("\t The ip address is  = %s\n", op);

Answer 1

请改变这个:

if(WSAAddressToString(lp,size2, NULL,op,&size) != 0) {
    printf("This thing has failed \n");   
    return 1;
} else
    printf("Address string = %s\n", op);
    pAddresses = pAddresses->Next;
}

对此:

long errorcode = WSAAddressToString(lp,size2, NULL,op,&size);
if(errorcode != 0) {
    printf("The error is number: %i\n", errorcode);   
    return 1;
} else
    printf("Address string = %s\n", op);
    pAddresses = pAddresses->Next;
}

然后告诉我们它打印的是什么号码.

或者在http://msdn.microsoft.com/en-us/library/windows/desktop/ms681381%28v=vs.85%29.aspx中查找

编辑:

SOCKADDR_IN6 addrTemp;
addrTemp.sin6_family = AF_INET6;
long errorcode = WSAAddressToString(&addrTemp,size2, NULL,op,&size);
if(errorcode != 0) {
    //printf("The error is number: %i\n", errorcode);   
    printf("errordetail: %i\n", WSAGetLastError());
    return 1;
} else
    printf("Address string = %s\n", op);
    pAddresses = pAddresses->Next;
}