ubuntu-C++拿到本机IP地址

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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;}

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