gethostbyname简单问题！

smartlife 2003-12-12 03:55:11

host ＝ gethostbyname（）；
将host.h_addr_list[0]中的ip地址（网络序）转换成 a.b.c.d 这样的字符串！

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wltsui 2003-12-16

HOSTENT *host;
host = gethostbyname(szName);
printf( "The Computer name is: %s, and ip is: %s\n", szName,
inet_ntoa(*(IN_ADDR *)host->h_addr_list[0] ) );

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smartlife 2003-12-16

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someone 2003-12-12

在有些机器上定义了多个IP
可用如下代码将多个IP都取出来：
int i;
HOSTENT *host;
host = gethostbyname(szhn);
if (host != NULL)
{
CString strIP;
char FAR *ip;
for (i = 0; ; i++)
{
ip = host->h_addr_list[i];
strIP.Format("%d.%d.%d.%d",
*(unsigned char*)ip,
*(unsigned char*)(ip+1),
*(unsigned char*)(ip+2),
*(unsigned char*)(ip+3));
m_lstIP.AddString(strIP);
if (i == 0)
//lstrcpy(m_szIp, strIP.GetBuffer(strIP.GetLength()));
lstrcpy(m_szIp, strIP);

if (ip+4 >= host->h_name)
break;
}
}

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someone 2003-12-12

HOSTENT *host;
host = gethostbyname(szhn);
if (host != NULL)
{
CString strIP;
char FAR *ip;
ip = host->h_addr_list[0];
strIP.Format("%d.%d.%d.%d",
*(unsigned char*)ip,
*(unsigned char*)(ip+1),
*(unsigned char*)(ip+2),
*(unsigned char*)(ip+3));
lstrcpy(p->szHostIP, strIP);
}