#include <Windows.h>

#include <winhttp.h>

#include <stdio.h>

int main()

{

    HINTERNET sessionHandle = WinHttpOpen(L"WinHttp Example", WINHTTP_ACCESS_TYPE_DEFAULT_PROXY, WINHTTP_NO_PROXY_NAME, WINHTTP_NO_PROXY_BYPASS, );

    if (sessionHandle)

    {

        HINTERNET connectionHandle = WinHttpConnect(sessionHandle, L"example.com", INTERNET_DEFAULT_HTTP_PORT, );

        if (connectionHandle)

        {

            HINTERNET requestHandle = WinHttpOpenRequest(connectionHandle, L"GET", L"", NULL, WINHTTP_NO_REFERER, WINHTTP_DEFAULT_ACCEPT_TYPES, );

            if (requestHandle)

            {

                BOOL success = WinHttpSendRequest(requestHandle, WINHTTP_NO_ADDITIONAL_HEADERS, , WINHTTP_NO_REQUEST_DATA, , , );

                if (success)

                {

                    success = WinHttpReceiveResponse(requestHandle, NULL);

                    if (success)

                    {

                        DWORD dwSize;

                        do

                        {

                            dwSize = ;

                            LPSTR pszOutBuffer;

                            DWORD dwDownloaded = ;

                            if (!WinHttpQueryDataAvailable(requestHandle, &dwSize))

                            {

                                printf("Error %u in WinHttpQueryDataAvailable.\n", GetLastError());

                                break;

                            }

                            // No more available data.

                            if (!dwSize)

                                break;

                            // Allocate space for the buffer.

                            pszOutBuffer = new char[dwSize + ];

                            if (!pszOutBuffer)

                            {

                                printf("Out of memory\n");

                                break;

                            }

                            // Read the Data.

                            ZeroMemory(pszOutBuffer, dwSize + );

                            if (!WinHttpReadData(requestHandle, (LPVOID)pszOutBuffer, dwSize, &dwDownloaded))

                            {

                                printf("Error %u in WinHttpReadData.\n", GetLastError());

                            }

                            else

                            {

                                printf("%s", pszOutBuffer);

                            }

                            // Free the memory allocated to the buffer.

                            delete[] pszOutBuffer;

                            // This condition should never be reached since WinHttpQueryDataAvailable

                            // reported that there are bits to read.

                            if (!dwDownloaded)

                                break;

                        } while (dwSize > );

                    }

                    else

                    {

                        // Report any errors.

                        printf("Error %d has occurred.\n", GetLastError());

                    }

                }

                else

                {

                    printf("Request failed\n");

                }

                WinHttpCloseHandle(requestHandle);

            }

            else

            {

                printf("Invalid request handle\n");

            }

            WinHttpCloseHandle(connectionHandle);

        }

        else

        {

            printf("Invalid connection handle\n");

        }

        WinHttpCloseHandle(sessionHandle);

    }

    else

    {

        printf("Invalid WinHTTP-session handle\n");

    }

    system("pause");

    return ;

}