帮我写个使用winhttpApi访问https://www.baidu.com且导入证书的c++例子 并计算请求时间

好的，下面是一个使用winhttpApi访问https://www.baidu.com并导入证书的c++例子，并计算请求时间的代码：

#include <iostream>
#include <windows.h>
#include <winhttp.h>
#include <time.h>

#pragma comment(lib, "winhttp.lib")

int main()
{
    HINTERNET hSession = NULL, hConnect = NULL, hRequest = NULL;
    DWORD dwSize = 0;
    DWORD dwDownloaded = 0;
    LPSTR pszOutBuffer;
    BOOL bResults = FALSE;
    DWORD dwStatusCode = 0;
    clock_t start_time, end_time;

    // Initialize WinHTTP session
    hSession = WinHttpOpen(L"WinHTTP Example/1.0", WINHTTP_ACCESS_TYPE_DEFAULT_PROXY, WINHTTP_NO_PROXY_NAME, WINHTTP_NO_PROXY_BYPASS, 0);
    if (hSession == NULL)
    {
        std::cout << "Error " << GetLastError() << " in WinHttpOpen" << std::endl;
        goto done;
    }

    // Specify an HTTPS server
    hConnect = WinHttpConnect(hSession, L"www.baidu.com", INTERNET_DEFAULT_HTTPS_PORT, 0);
    if (hConnect == NULL)
    {
        std::cout << "Error " << GetLastError() << " in WinHttpConnect" << std::endl;
        goto done;
    }

    // Open request
    hRequest = WinHttpOpenRequest(hConnect, L"GET", NULL, NULL, WINHTTP_NO_REFERER, WINHTTP_DEFAULT_ACCEPT_TYPES, WINHTTP_FLAG_SECURE);
    if (hRequest == NULL)
    {
        std::cout << "Error " << GetLastError() << " in WinHttpOpenRequest" << std::endl;
        goto done;
    }

    // Import certificate
    HCERTSTORE hCertStore = CertOpenSystemStore(NULL, L"MY");
    if (hCertStore == NULL)
    {
        std::cout << "Error " << GetLastError() << " in CertOpenSystemStore" << std::endl;
        goto done;
    }

    PCCERT_CONTEXT pCertContext = CertFindCertificateInStore(hCertStore, X509_ASN_ENCODING | PKCS_7_ASN_ENCODING, 0, CERT_FIND_SUBJECT_STR, L"www.baidu.com", NULL);
    if (pCertContext == NULL)
    {
        std::cout << "Error " << GetLastError() << " in CertFindCertificateInStore" << std::endl;
        goto done;
    }

    bResults = WinHttpSetOption(hRequest, WINHTTP_OPTION_CLIENT_CERT_CONTEXT, (LPVOID)pCertContext, sizeof(CERT_CONTEXT));
    if (!bResults)
    {
        std::cout << "Error " << GetLastError() << " in WinHttpSetOption" << std::endl;
        goto done;
    }

    // Send request
    start_time = clock();
    bResults = WinHttpSendRequest(hRequest, WINHTTP_NO_ADDITIONAL_HEADERS, 0, WINHTTP_NO_REQUEST_DATA, 0, 0, 0);
    if (!bResults)
    {
        std::cout << "Error " << GetLastError() << " in WinHttpSendRequest" << std::endl;
        goto done;
    }

    // Receive response
    bResults = WinHttpReceiveResponse(hRequest, NULL);
    if (!bResults)
    {
        std::cout << "Error " << GetLastError() << " in WinHttpReceiveResponse" << std::endl;
        goto done;
    }

    // Check status code
    dwSize = sizeof(dwStatusCode);
    bResults = WinHttpQueryHeaders(hRequest, WINHTTP_QUERY_STATUS_CODE | WINHTTP_QUERY_FLAG_NUMBER, NULL, &dwStatusCode, &dwSize, NULL);
    if (!bResults)
    {
        std::cout << "Error " << GetLastError() << " in WinHttpQueryHeaders" << std::endl;
        goto done;
    }

    if (dwStatusCode != HTTP_STATUS_OK)
    {
        std::cout << "Error: status code " << dwStatusCode << std::endl;
        goto done;
    }

    // Read response
    do
    {
        // Check for available data
        dwSize = 0;
        bResults = WinHttpQueryDataAvailable(hRequest, &dwSize);
        if (!bResults)
        {
            std::cout << "Error " << GetLastError() << " in WinHttpQueryDataAvailable" << std::endl;
            goto done;
        }

        // Allocate space for buffer
        pszOutBuffer = new char[dwSize + 1];
        if (!pszOutBuffer)
        {
            std::cout << "Error out of memory" << std::endl;
            goto done;
        }

        // Read data
        ZeroMemory(pszOutBuffer, dwSize + 1);
        bResults = WinHttpReadData(hRequest, (LPVOID)pszOutBuffer, dwSize, &dwDownloaded);
        if (!bResults)
        {
            std::cout << "Error " << GetLastError() << " in WinHttpReadData" << std::endl;
            goto done;
        }

        // Print data
        std::cout << pszOutBuffer;

        // Free the memory allocated to the buffer.
        delete[] pszOutBuffer;

    } while (dwSize > 0);

    end_time = clock();
    double elapsed_time = (double)(end_time - start_time) / CLOCKS_PER_SEC;
    std::cout << "Elapsed time: " << elapsed_time << " seconds" << std::endl;

done:
    // Clean up
    if (hRequest) WinHttpCloseHandle(hRequest);
    if (hConnect) WinHttpCloseHandle(hConnect);
    if (hSession) WinHttpCloseHandle(hSession);
    if (pCertContext) CertFreeCertificateContext(pCertContext);
    if (hCertStore) CertCloseStore(hCertStore, 0);

    return 0;
}

该代码首先初始化一个WinHTTP会话，然后指定要访问的HTTPS服务器。然后打开请求并导入证书，发送请求并接收响应，最后计算请求时间。请注意，代码中的证书名称应更改为您的证书。