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闪电般的获取外网ip地址和内网ip

 闪电般的获取外网ip地址和内网ip

 //获取本机内网IP
    /*hostent *name;
    char Name[255];
    memset(Name,0,255);
    gethostname(Name,255);
    name=gethostbyname(Name);
    m_ClientIP=inet_ntoa(*(in_addr *)name->h_addr_list[0]);*/


//获取本机公网IP地址
CString strClientIP;
int iFirst = 0, iLast = 0;
CString strIPAddr;
TCHAR szIPAddr[MAX_PATH] = {0};
TCHAR szTempFile [MAX_PATH] = {0};
UINT nResult= GetTempFileName (szTempFile, _T ("~ex"),0,szTempFile);

int ret = URLDownloadToFile(NULL,", BINDF_GETNEWESTVERSION, NULL);
if (ret == S_OK) {
   CFile mFile;
   if (mFile.Open(szTempFile, CFile::modeRead) && mFile.GetLength() > 0){
    mFile.Read(szIPAddr, MAX_PATH);
    strIPAddr = szIPAddr;
    iFirst = strIPAddr.Find('[', 0)+1;
    iLast = strIPAddr.Find(']', iFirst);
    strIPAddr = strIPAddr.Mid(iFirst, iLast-iFirst);
    strClientIP=strIPAddr;
   }
}