ubuntu-C++拿到本机IP地址

环境

ubuntu 14.04

场景

自动驾驶算法架构中，存在多台机器，通过各台主机的ＩＰ确认机器功能，实现多台机器共用同一套代码，实现系统一键启动功能

方法

#include <stdio.h> #include <sys/types.h> #include <ifaddrs.h> #include <netinet/in.h> #include <string.h> #include <arpa/inet.h> #include <boost/property_tree/json_parser.hpp> #include <boost/property_tree/ptree.hpp> #include <iostream> #include <boost/property_tree/ptree.hpp> #include <boost/property_tree/json_parser.hpp> #include <boost/foreach.hpp> #include <string> int main (int argc, const char * argv[]) { struct ifaddrs * ifAddrStruct=NULL; struct ifaddrs * ifa=NULL; void * tmpAddrPtr=NULL; getifaddrs(&ifAddrStruct); for (ifa = ifAddrStruct; ifa != NULL; ifa = ifa->ifa_next) { if (!ifa->ifa_addr) { continue; } if (ifa->ifa_addr->sa_family == AF_INET) { // check it is IP4 // is a valid IP4 Address tmpAddrPtr=&((struct sockaddr_in *)ifa->ifa_addr)->sin_addr; char addressBuffer[INET_ADDRSTRLEN]; inet_ntop(AF_INET, tmpAddrPtr, addressBuffer, INET_ADDRSTRLEN); printf("%s IP Address %s\n", ifa->ifa_name, addressBuffer); } else if (ifa->ifa_addr->sa_family == AF_INET6) { // check it is IP6 // is a valid IP6 Address tmpAddrPtr=&((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr; char addressBuffer[INET6_ADDRSTRLEN]; inet_ntop(AF_INET6, tmpAddrPtr, addressBuffer, INET6_ADDRSTRLEN); printf("%s IP Address %s\n", ifa->ifa_name, addressBuffer); } } if (ifAddrStruct!=NULL) freeifaddrs(ifAddrStruct); return 0; }