如何在Windows下获取IP地址 [英] How to get the ip address under Windows

问题描述

全部 我已经有一个"socketfd"，我想知道如何使用它来检索本地IP地址. 在linux下，我可以做这样的事情(不完全正确):

all i already had a "socketfd", and i was wondering how to use it to retrieve the local ip address. under linux, i can do something like this(not exactly correct):

struct ifreq ifr;
ifr.ifr_addr.sa_family = AF_INET;
ioctl(socketfd, SIOCGIFADDR, &ifr);
char *address = inet_ntoa(((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr);

但是，在Windows上，我如何实现相同的目标? (不使用MFC) 非常感谢.

but, on Windows, how can i achieve the same goal? (not using MFC) many thanks.

也许我的主机有多个ip地址，我希望一个与"socketfd"连接".

edit: maybe my host has multiple ip addresses, and i want the one "connected" with "socketfd".

推荐答案

如果已连接套接字，则其上的getsockname()将用套接字的本地名称填充struct sockaddr.在两个操作系统(以及所有带有BSD插槽的操作系统)上都可以使用.

If the socket is connected, then getsockname() on it will fill a struct sockaddr with the local name for the socket. This works on both OSes (and anything with BSD sockets).

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