Залогиниться на сайте

char* szHead =  "Host: log.finalsurge.com\r\n"
                    "Content-Length: 159\r\n"
                    "Content-Type: application/x-www-form-urlencoded\r\n"
                    "Origin: https://log.finalsurge.com\r\n"
                    "User-Agent: MyBrowser\r\n"
                    "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8\r\n"
                    "Referer: https://log.finalsurge.com/login.cshtml?Assoc=&page_redirect=/\r\n";
                    //"Accept-Encoding: gzip, deflate, br\r\n"
                    "Accept-Language: ru,en;q=0.9\r\n";
    int nHeadLen = lstrlen(szHead);
    char * szData = "SubmitType=lg&planid=&partner=&event=&plancode=&membercode=&coach=&page_redirect=%2F&oauth_redirect=&k=&mc=&en=&login_name=Test%40google.ru&login_password=Test";
    int nDataLen = lstrlen(szData);
    char* szUrl = "log.finalsurge.com";
    HINTERNET hInet = InternetOpen(_T("MyBrowser"),INTERNET_OPEN_TYPE_PRECONFIG,NULL,NULL,0);
    HINTERNET hUrl = ::InternetConnectA(hInet, szUrl, INTERNET_DEFAULT_HTTP_PORT, NULL, NULL, INTERNET_SERVICE_HTTP, 0, 1);
    HINTERNET hRequest = HttpOpenRequestA(hUrl, "POST", "/login.cshtml", "HTTP/1.1", NULL, NULL, INTERNET_FLAG_KEEP_CONNECTION, 1);
    char szBuffer[1024];    
    HttpSendRequest(hRequest, szHead, nHeadLen, szData, nDataLen);
    ofstream fnews("C:\\Test.html", ios::out|ios::binary);
    if (fnews.is_open() && hUrl) 
    {    
        DWORD dwRead;
        char szBuf[1024];
        do
        {
            InternetReadFile(hRequest,(void*)szBuf,1023,&dwRead);
            szBuf[dwRead] = 0;
            fnews << szBuf;
        }while(dwRead);
    }
    fnews.close();
    InternetCloseHandle(hInet);
    InternetCloseHandle(hUrl);
    system("start C:\\Test.html");