Problem with HttpSendRequest

Hi
I want to display to the user if the WEB site,that he is is protected by SSL.
For this i want to get from the WEB server the client certificate object.
I have a problem to send the request to the server.
This is my code

HINTERNET hOpen, hConnect, hReq;
DWORD dwFlags = INTERNET_FLAG_NO_CACHE_WRITE |
INTERNET_FLAG_KEEP_CONNECTION |
INTERNET_FLAG_IGNORE_CERT_CN_INVALID |
INTERNET_FLAG_IGNORE_CERT_DATE_INVALID|
INTERNET_FLAG_PRAGMA_NOCACHE;

char *lpBuffer, szData[51];
INTERNET_PORT dwPort;

wchar_t* accept[2]={L"*/*",0};
if ( !(hOpen = InternetOpen ( "HeadDump", INTERNET_OPEN_TYPE_PRECONFIG , NULL, NULL, 0) ) )
{
ShowError ( GetLastError(), "InternetOpen");
return false;
}

if ( !(hConnect = InternetConnect ( hOpen, url, dwPort,""/* user*/, ""/* password*/, INTERNET_SERVICE_HTTP, 0 , 1) ) )
{
ShowError (GetLastError(), "InternetConnect");
return false;
}

if ( !(hReq = HttpOpenRequest (hConnect, "GET", url, "HTTP/1.0", "", (const char**) accept, dwFlags ,1 )))
{
ShowError (GetLastError(), "HttpOpenRequest");
return false;
}


again:
//Resolver::Trace("Send Request = " + data);
std::string header = CONTENT_TYPE_STR;


if ( !HttpSendRequest (hReq, // handle from HttpOpenRequest
NULL,0, NULL,0) )
{
ShowError (GetLastError(), "HttpSendRequest");

dwFlags |= SECURITY_FLAG_IGNORE_UNKNOWN_CA |
SECURITY_FLAG_IGNORE_REVOCATION |
SECURITY_FLAG_IGNORE_REDIRECT_TO_HTTP |
SECURITY_FLAG_IGNORE_REDIRECT_TO_HTTPS |
SECURITY_FLAG_IGNORE_CERT_DATE_INVALID |
SECURITY_FLAG_IGNORE_CERT_CN_INVALID;

if ( !InternetSetOption (hReq,
INTERNET_OPTION_SECURITY_FLAGS,
&dwFlags,
sizeof (dwFlags) ) )
{
ShowError(GetLastError(),"InternetSetOptionFailed");
return false;
}
}

I'm new in VC++.
URL
Help me please with my question