c - 如何将字符复制到 srv_address.sin_addr.s_addr

Question

关闭。此题需要 details or clarity 。目前不接受答案。

---

想要改进这个问题吗？通过 editing this post 添加详细信息并澄清问题.

已关闭 9 年前。

Improve this question

我不知道如何复制这个:

srv_address.sin_addr.s_addr = udp->address;

我知道它们是不同的类型，我无法通过这种方式复制它们，但我尝试了几乎所有方法但没有成功，请帮助我解决它

Answer 1

试试这个:inet_pton(AF_INET, udp->peer_address, &srv_address.sin_addr);

int inet_pton(int af, const char *src, void *dst);

This function converts the character string src into a network address structure in the af address family, then copies the network address structure to dst. The af argument must be either AF_INET or AF_INET6.

或

srv_address.sin_addr.s_addr= inet_addr(udp->peer_address);

in_addr_t inet_addr(const char *cp);

The inet_addr() function converts the Internet host address cp from IPv4 numbers-and-dots notation into binary data in network byte order