stringgetLocalIP(char* local_ip){// 获取本地IP时,一般都是127.0.0.1charhost_name[128]="";structhostent*host_ent;gethostname(host_name,sizeof(host_name)); host_ent =gethostbyname(host_name);constchar* first_ip =inet_ntoa(*(structin_addr*)(host_ent->h_addr_list[0]));memcpy(local_...
/*代码来自StackOverflow:http://stackoverflow.com/questions/212528/linux-c-get-the-ip-address-of-local-computer*/#include<stdio.h>#include<sys/types.h>#include<ifaddrs.h>#include<netinet/in.h>#include<string.h>#include<arpa/inet.h>intmain (intargc,constchar*argv[]) {structifaddrs * ifA...
//ifconf通常是用来保存所有接口信息的//if.hstruct ifconf{int ifc_len;/* size of buffer */union{char*ifcu_buf;/*input from user->kernel*/struct ifreq*ifcu_req;/* return from kernel->user*/}ifc_ifcu;};#define ifc_buf ifc_ifcu.ifcu_buf/*buffer address */#define ifc_req ifc_ifc...
5.2 ip address delete–删除一个协议地址. 缩写:delete、del、d ip addr del 192.168.4.1/24 brd + dev eth0 label eth0:Alias1 5.3 ip address show–显示协议地址. 缩写:show、list、lst、sh、ls、l ip addr ls eth0 5.4.ip address flush–清除协议地址. 缩写:flush、f 示例1 : 删除属于私网10.0...
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1 Get the ip addresses of an interface 4 get global ip address 0 How to get Internet IP from struct sockaddr (not router IP)? 1 How to Know an IP Address is Local or not on Linux Server 1 Get ip address of computer on network c++ 3 How to get the external IP address ...
String ipaddress = inetAddress.getHostAddress().toString();if (!ipaddress.contains("::") && !ipaddress.contains("0:0:") && !ipaddress.contains("fe80")) { ip = ipaddress;} } } } } } catch (SocketException ex) { System.out.println("获取ip地址异常");ex.printStackTrace(...
## 添加IP地址 要为网络接口添加IP地址,可以使用以下命令: “`shell ip address add/dev “` 其中,``是要添加的IP地址,``是子网掩码,``是要添加IP地址的网络接口。 例如,要为eth0接口添加IP地址192.168.1.100,子网掩码为255.255.255.0,可以使用以下命令: ...
🔫 NAT(Network Address Translation,网络地址转换)是一种用于解决 IPv4 地址短缺的关键技术,允许私有网络内的多个设备通过一个或多个公共IP地址访问互联网 2.1 基本原理 地址转换:将内部网络的私有IP地址(如192.168.x.x)转换为公共IP地址,实现与外部网络的通信。 会话跟踪:通过维护转换表(NAT表),记录内部设备与外...
("get %s mac address socket creat error\n",eth_inf);return-1;}strncpy(ifr.ifr_name,eth_inf,sizeof(ifr.ifr_name)-1);if(ioctl(sd,SIOCGIFHWADDR,&ifr)<0){printf("get %s mac address error\n",eth_inf);close(sd);return-1;}snprintf(mac,MAC_SIZE,"%02x:%02x:%02x:%02x:%02x:%02x",(...