1
#include <stdio.h>
#include <winsock2.h>
#pragma comment(lib,"ws2_32.lib")
int doit(int, char **)
{
char host_name[255];
//获取本地主机名称
if (gethostname(host_name, sizeof(host_name)) == SOCKET_ERROR)
{
printf("Error %d when getting local host name.n", WSAGetLastError());
return 1;
}
printf("Host name is: %s\n", host_name);
//从主机名数据库中得到对应的“主机”
struct hostent *phe = gethostbyname(host_name);
if (phe == 0)
{
printf("Yow! Bad host lookup.");
return 1;
}
//循环得出本地机器所有IP地址
for (int i = 0; phe->h_addr_list[i] != 0; ++i)
{
struct in_addr addr;
memcpy(&addr, phe->h_addr_list[i], sizeof(struct in_addr));
printf("Address %d : %s\n" , i, inet_ntoa(addr));
}
return 0;
}
int main(int argc, char *argv[])
{
WSAData wsaData;
if (WSAStartup(MAKEWORD(1, 1), &wsaData) != 0)
{
system("pause");
return 255;
}
int retval = doit(argc, argv);
WSACleanup();
system("pause");
return retval;
}
2
//#include<winsock2.h>
//连接 ws2_32.lib
void CCWebClientDlg::InitSocket()
{
WORD wVersionRequested;
WSADATA wsaData;
char name[255];
CString ip;
int err; PHOSTENT hostinfo;
wVersionRequested = MAKEWORD( 1, 1 );//版本号1.1
//1.加载套接字库
err = WSAStartup( wVersionRequested, &wsaData );
if ( err != 0 )
{
return;
} //判断是否我们请求的winsocket版本,如果不是
//则调用WSACleanup终止winsocket的使用并返回 if ( LOBYTE( wsaData.wVersion ) != 1 ||
HIBYTE( wsaData.wVersion ) != 1 )
{
WSACleanup( );
return;
}///...if if ( err == 0 )
{
if( gethostname ( name, sizeof(name)) == 0)
{
if((hostinfo = gethostbyname(name)) != NULL)
{
ip = inet_ntoa (*(struct in_addr *)*hostinfo->h_addr_list);
}
}
WSACleanup();
}
SetDlgItemText(IDC_EDIT_PORT,name);//name里是本机名
SetDlgItemText(IDC_IPADDRESS1,ip); //ip中是本机IP
}
3
需要包含:#include <IPHlpApi.h>
添加:IPHlpApi.lib
DWORD dwResult;
ULONG OutBufLen;
IP_ADAPTER_INFO AdapterInfo;
OutBufLen = sizeof(IP_ADAPTER_INFO);
dwResult = GetAdaptersInfo(&AdapterInfo,&OutBufLen);
//网卡地址:AdapterInfo.AdapterName // IP: AdapterInfo.IpAddressList.IpAddress //子网掩码: AdapterInfo.IpAddressList.IpMask FIXED_INFO fixed_info; OutBufLen = sizeof(FIXED_INFO); GetNetworkParams(&fixed_info,&OutBufLen); //计算机名 fixed_info.HostName //DNS fixed_info.DnsServerList.IpAddress