写个WinHttp 访问https://www.amazon.com.au/ap/signin 返回响应内容和Headers

WinHttp是一个微软开发的用于HTTP客户端和服务器应用程序的API，可以在Windows平台上使用。下面是一个使用WinHttp进行HTTPS请求的示例代码，请求https://www.amazon.com.au/ap/signin页面，并返回响应内容和Headers。

#include <windows.h>
#include <winhttp.h>
#include <iostream>
#pragma comment(lib, "winhttp.lib")
using namespace std;

int main()
{
    HINTERNET hSession, hConnect, hRequest;
    DWORD dwSize, dwDownloaded;
    LPSTR pszOutBuffer;

    // 创建一个WinHTTP会话句柄
    hSession = WinHttpOpen(L"WinHTTP Example/1.0", WINHTTP_ACCESS_TYPE_DEFAULT_PROXY, WINHTTP_NO_PROXY_NAME, WINHTTP_NO_PROXY_BYPASS, 0);
    if (!hSession)
    {
        cout << "WinHttpOpen failed: " << GetLastError() << endl;
        return 1;
    }

    // 创建一个HTTPS连接句柄
    hConnect = WinHttpConnect(hSession, L"www.amazon.com.au", INTERNET_DEFAULT_HTTPS_PORT, 0);
    if (!hConnect)
    {
        cout << "WinHttpConnect failed: " << GetLastError() << endl;
        WinHttpCloseHandle(hSession);
        return 1;
    }

    // 创建一个HTTPS请求句柄
    hRequest = WinHttpOpenRequest(hConnect, L"GET", L"/ap/signin", NULL, WINHTTP_NO_REFERER, WINHTTP_DEFAULT_ACCEPT_TYPES, WINHTTP_FLAG_SECURE);
    if (!hRequest)
    {
        cout << "WinHttpOpenRequest failed: " << GetLastError() << endl;
        WinHttpCloseHandle(hConnect);
        WinHttpCloseHandle(hSession);
        return 1;
    }

    // 发送HTTPS请求
    if (!WinHttpSendRequest(hRequest, WINHTTP_NO_ADDITIONAL_HEADERS, 0, WINHTTP_NO_REQUEST_DATA, 0, 0, 0))
    {
        cout << "WinHttpSendRequest failed: " << GetLastError() << endl;
        WinHttpCloseHandle(hRequest);
        WinHttpCloseHandle(hConnect);
        WinHttpCloseHandle(hSession);
        return 1;
    }

    // 等待服务器响应
    if (!WinHttpReceiveResponse(hRequest, NULL))
    {
        cout << "WinHttpReceiveResponse failed: " << GetLastError() << endl;
        WinHttpCloseHandle(hRequest);
        WinHttpCloseHandle(hConnect);
        WinHttpCloseHandle(hSession);
        return 1;
    }

    // 查询响应头
    dwSize = 0;
    WinHttpQueryHeaders(hRequest, WINHTTP_QUERY_RAW_HEADERS_CRLF, WINHTTP_HEADER_NAME_BY_INDEX, NULL, &dwSize, WINHTTP_NO_HEADER_INDEX);
    if (GetLastError() == ERROR_INSUFFICIENT_BUFFER)
    {
        LPWSTR pszHeaders = new WCHAR[dwSize / sizeof(WCHAR)];
        if (WinHttpQueryHeaders(hRequest, WINHTTP_QUERY_RAW_HEADERS_CRLF, WINHTTP_HEADER_NAME_BY_INDEX, pszHeaders, &dwSize, WINHTTP_NO_HEADER_INDEX))
        {
            wcout << L"Headers: " << endl << pszHeaders << endl;
        }
        else
        {
            cout << "WinHttpQueryHeaders failed: " << GetLastError() << endl;
        }
        delete[] pszHeaders;
    }

    // 查询响应内容
    dwSize = 0;
    do
    {
        if (!WinHttpQueryDataAvailable(hRequest, &dwSize))
        {
            cout << "WinHttpQueryDataAvailable failed: " << GetLastError() << endl;
            WinHttpCloseHandle(hRequest);
            WinHttpCloseHandle(hConnect);
            WinHttpCloseHandle(hSession);
            return 1;
        }

        // 分配缓冲区
        pszOutBuffer = new char[dwSize + 1];
        if (!pszOutBuffer)
        {
            cout << "Out of memory" << endl;
            WinHttpCloseHandle(hRequest);
            WinHttpCloseHandle(hConnect);
            WinHttpCloseHandle(hSession);
            return 1;
        }

        // 读取响应内容
        ZeroMemory(pszOutBuffer, dwSize + 1);
        if (!WinHttpReadData(hRequest, (LPVOID)pszOutBuffer, dwSize, &dwDownloaded))
        {
            cout << "WinHttpReadData failed: " << GetLastError() << endl;
            delete[] pszOutBuffer;
            WinHttpCloseHandle(hRequest);
            WinHttpCloseHandle(hConnect);
            WinHttpCloseHandle(hSession);
            return 1;
        }

        // 输出响应内容
        cout << pszOutBuffer;

        // 释放缓冲区
        delete[] pszOutBuffer;

    } while (dwSize > 0);

    // 关闭请求句柄
    WinHttpCloseHandle(hRequest);

    // 关闭连接句柄
    WinHttpCloseHandle(hConnect);

    // 关闭会话句柄
    WinHttpCloseHandle(hSession);

    return 0;
}

在上面的代码中，我们首先创建了一个WinHTTP会话句柄，然后创建了一个HTTPS连接句柄，接着创建了一个HTTPS请求句柄。我们使用WinHttpSendRequest函数发送了一个GET请求，然后使用WinHttpReceiveResponse函数等待服务器响应。在响应头和响应内容中，我们使用WinHttpQueryHeaders和WinHttpReadData函数分别进行查询和读取。最后，我们关闭了请求句柄、连接句柄和会话句柄。