gethostname 函数始终返回 nullptr

发布于 2025-01-21 03:08:14 字数 337 浏览 2 评论 0原文

我正在尝试在Windows中解决C中的主机名。无论我输入什么地址，它总是返回nullptr。我在Python解释器中尝试了相同的功能，并且它可以正常运行，因此此功能之外没有错，这会导致其无法解析DNS。甚至“ Localhost”也失败了。尝试访问主机变量中的任何内容会导致崩溃。

    struct hostent* host = gethostbyname("google.com");

    if (host) {
        printf("Yes\n");
    }
    else {
        printf("No\n"); // Always gets here
    }

原文

I am attempting to resolve a hostname in C in windows. No matter what I enter in as the address it always returns a nullptr. I have tried the same function in a python interpreter and it works fine, so there is nothing wrong outside of this function that would cause it to be unable to resolve a DNS. Even "localhost" fails aswell. Attempting to access anything in the host variables causes a crash.

    struct hostent* host = gethostbyname("google.com");

    if (host) {
        printf("Yes\n");
    }
    else {
        printf("No\n"); // Always gets here
    }

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