获取IPV6内网地址C++代码
时间: 2023-12-24 20:04:58 浏览: 31
获取IPv6内网地址的C++代码如下:
```cpp
#include <iostream>
#include <string>
#include <vector>
#include <ifaddrs.h>
#include <netinet/in.h>
#include <arpa/inet.h>
int main() {
struct ifaddrs *ifaddr, *ifa;
if (getifaddrs(&ifaddr) == -1) {
std::cerr << "getifaddrs failed" << std::endl;
return 1;
}
std::vector<std::string> ipv6Addrs;
for (ifa = ifaddr; ifa != nullptr; ifa = ifa->ifa_next) {
if (ifa->ifa_addr == nullptr || ifa->ifa_addr->sa_family != AF_INET6) {
continue;
}
char addrBuf[INET6_ADDRSTRLEN];
int ret = inet_ntop(AF_INET6, &((struct sockaddr_in6*)ifa->ifa_addr)->sin6_addr, addrBuf, sizeof(addrBuf));
if (ret == 0) {
std::cerr << "inet_ntop failed" << std::endl;
continue;
}
std::string addrStr = std::string(addrBuf);
if (addrStr.substr(0, 2) == "fd") {
ipv6Addrs.push_back(addrStr);
}
}
freeifaddrs(ifaddr);
for (auto addr : ipv6Addrs) {
std::cout << addr << std::endl;
}
return 0;
}
```
该代码通过调用`getifaddrs()`函数获取本机的网络接口信息,然后遍历每个网络接口,筛选出IPv6地址中以"fd"开头的内网地址,并输出。需要注意的是,该代码只适用于Linux系统,如果在其他操作系统上运行,可能需要做出一些修改。