如何从sockaddr获取IP地址 [英] How to get IP address from sockaddr

问题描述

我想尝试在调用accept后获取客户端的ip地址。这是我到目前为止，但我只是最终得到一些长的数字，显然不是一个IP地址。可能是错误的？

I want to try and get the ip address of a client after calling accept. This is what I have so far, but I just end up getting some long number that is clearly not an ip address. What could be wrong?

int tcp_sock = socket(AF_INET, SOCK_STREAM, 0);

sockaddr_in client;
client.sin_family = AF_INET;
socklen_t c_len = sizeof(client);

int acc_tcp_sock = accept(tcp_sock, (sockaddr*)&client, &c_len);
cout << "Connected to: " << client.sin_addr.s_addr << endl;

推荐答案

IP地址，整数形式（一个IP地址只是一个整数，毕竟，当我们拆分八位字节并将其转换为点符号时，人们更容易使用）。

That long number is the IP address, in integer form (an IP address is just an integer, after all; it's just easier for people to use when we split the octets apart and put it into dot notation).

您可以使用 inet_ntoa 将整数值转换为标准点符号。

You can use inet_ntoa to convert the integer value to standard dot notation.

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