Question

问题：我尝试使用 WSAAddressToString 函数来获取计算机的IP地址。我浏览了他们网站上的msdn文档，结构中有太多的结构，我觉得这是我出错的地方。代码在pastebin link here中提供。请让我知道我哪里出错了。

答案：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

请更改此内容：

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

修改

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; }

使用WSAAddressToString时的问题

1 个答案: