通过调用gethostbyname 系统函数进行解析 void GetHostNamebyIp(char* hostName) { if(NULL == hostName)
通过调用gethostbyname 系统函数进行解析
void GetHostNamebyIp(char* hostName)
{
if(NULL == hostName)
{
return;
}
int WSA_return = 0;
WSADATA WSAData;
HOSTENT *host_entry;
char szIP[1024] = {0};
AfxMessageBox(hostName);
WSA_return=WSAStartup(0x0202,&WSAData);
if(0 == WSA_return)
{
host_entry = gethostbyname(hostName);
if(0 != host_entry)
{
char** ipAddress = host_entry->h_addr_list;
for(; *ipAddress != NULL; ipAddress++)
{
strcpy(szIP,inet_ntoa(*(LPIN_ADDR)*(ipAddress)));
WriteIPFile("ip.txt",hostName ,szIP);
}
}
}
}
将解析出来的ip地址写入到文件中
//写文件,第一个参数文件名,第二个参数hostName,第三个参数文件内容
void WriteIPFile(char* FileName, char* hostName, char* text)
{
HANDLE hFILE=CreateFile(FileName,GENERIC_WRITE,FILE_SHARE_READ,NULL,OPEN_ALWAYS,FILE_ATTRIBUTE_NORMAL,NULL);
if(hFILE==INVALID_HANDLE_VALUE)
{
//文件创建失败
return;
}
if(SetFilePointer(hFILE,0,NULL,FILE_END)==-1)
{
printf("SetFilePointer error\n");
return ;
}
DWord dwhostWrite;
if(!WriteFile(hFILE,hostName,strlen(hostName),&dwhostWrite,NULL))
{
printf("WriteFile error\n");
return ;
}
if(!WriteFile(hFILE,"\r\n",2,&dwhostWrite,NULL))
{
printf("WriteFile error\n");
return ;
}
DWORD dwWrite;
if(!WriteFile(hFILE,text,strlen(text),&dwWrite,NULL))
{
printf("WriteFile error\n");
return ;
}
if(!WriteFile(hFILE,"\r\n",2,&dwWrite,NULL))
{
printf("WriteFile error\n");
return ;
}
CloseHandle(hFILE);
}
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本文标题: VC实现将网址解析出所有ip地址的实例代码
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