关于gethostbyname 的疑问
Hi,
MSDN 中说:
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The gethostbyname function cannot resolve IP address strings passed to it. Such a request is treated exactly as if an unknown host name were passed.
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可是我发现实际上好像不是这样的。我本想利用这点,判断user输入的是IP地址还是域名;结果是,传给IP地址的话,gethostbyname返回的也不是null.
为什么?那有没有更好的判断user输入的是IP地址还是域名的方法呢?谢谢!