#include <afxinet.h>

#include <iostream>

#include <vector>

#ifdef _UNICODE

#define COUT wcout

#else

#define COUT cout

#endif

using namespace std;

int main()

{

    CInternetSession session(TEXT("MfcHttp"));

    CHttpConnection *connection = session.GetHttpConnection(TEXT("example.com"), (INTERNET_PORT));

    CHttpFile *file = connection->OpenRequest(CHttpConnection::HTTP_VERB_GET, TEXT(""));

    try

    {

        file->SendRequest();

        DWORD statusCode;

        file->QueryInfoStatusCode(statusCode);

        if (HTTP_STATUS_OK == statusCode)

        {

            CString contentLength;

            file->QueryInfo(HTTP_QUERY_CONTENT_LENGTH, contentLength);

            int fileSize = _ttoi(contentLength);

            vector<char> buffer(fileSize + );

            UINT numberOfBytesRead = file->Read(&buffer[], fileSize);

            buffer[fileSize] = '\0';

            COUT << &buffer[] << endl;

        }

        else

        {

            COUT << "statusCode" << statusCode << endl;

        }

    }

    catch (CInternetException *ex)

    {

        TCHAR error[];

        ex->GetErrorMessage(error, );

        COUT << error << endl;

        ex->Delete();

    }

    delete file;

    delete connection;

    system("pause");

    return ;

}

CHttpConnection *connection = session.GetHttpConnection(TEXT("example.com"), (INTERNET_PORT)80);

CHttpFile *file = connection->OpenRequest(CHttpConnection::HTTP_VERB_GET, TEXT(""));

CHttpConnection *connection = session.GetHttpConnection(TEXT("www.example.com"), INTERNET_FLAG_SECURE, (INTERNET_PORT)443);

CHttpFile *file = connection->OpenRequest(CHttpConnection::HTTP_VERB_GET, TEXT(""), nullptr, 1, nullptr, nullptr, INTERNET_FLAG_SECURE);