用WinHttp 写个访问https://www.amazon.com.au/ap/signin的函数 并且返回响应内容和Headers

好的，以下是用WinHttp访问https://www.amazon.com.au/ap/signin并返回响应内容和Headers的函数：

#include <Windows.h>
#include <Winhttp.h>
#include <iostream>
#include <vector>

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

std::vector<std::string> split(const std::string& str, const std::string& delim) {
    std::vector<std::string> res;
    if (str.empty()) {
        return res;
    }

    std::string::size_type start = 0;
    std::string::size_type index = str.find(delim, start);
    while (index != std::string::npos) {
        res.push_back(str.substr(start, index - start));
        start = index + delim.length();
        index = str.find(delim, start);
    }

    res.push_back(str.substr(start));
    return res;
}

std::string UrlEncode(const std::string& str) {
    std::string res;

    for (size_t i = 0; i < str.length(); ++i) {
        char c = str[i];
        if ((c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z') ||
            (c >= 'a' && c <= 'z') || c == '-' || c == '_' || c == '.' || c == '~') {
            res.push_back(c);
        } else if (c == ' ') {
            res.push_back('+');
        } else {
            res.push_back('%');
            res.push_back("0123456789ABCDEF"[((unsigned char)c) >> 4]);
            res.push_back("0123456789ABCDEF"[((unsigned char)c) & 15]);
        }
    }

    return res;
}

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

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

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

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

    // 等待响应
    if (!WinHttpReceiveResponse(hRequest, NULL)) {
        std::cout << "WinHttpReceiveResponse failed: " << GetLastError() << std::endl;
        WinHttpCloseHandle(hRequest);
        WinHttpCloseHandle(hConnect);
        WinHttpCloseHandle(hSession);
        return "";
    }

    // 获取响应头部信息
    DWORD 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) {
        std::vector<char> buffer(dwSize);
        if (!WinHttpQueryHeaders(hRequest, WINHTTP_QUERY_RAW_HEADERS_CRLF, WINHTTP_HEADER_NAME_BY_INDEX, &buffer[0], &dwSize, WINHTTP_NO_HEADER_INDEX)) {
            std::cout << "WinHttpQueryHeaders failed: " << GetLastError() << std::endl;
            WinHttpCloseHandle(hRequest);
            WinHttpCloseHandle(hConnect);
            WinHttpCloseHandle(hSession);
            return "";
        }

        std::string headers(&buffer[0], dwSize);
        std::vector<std::string> lines = split(headers, "\r\n");
        for (const auto& line : lines) {
            std::cout << line << std::endl;
        }
    }

    // 获取响应内容
    std::string response;
    char buffer[1024];
    DWORD bytesRead = 0;
    while (WinHttpReadData(hRequest, buffer, sizeof(buffer), &bytesRead) && bytesRead != 0) {
        response.append(buffer, bytesRead);
    }

    // 关闭句柄
    WinHttpCloseHandle(hRequest);
    WinHttpCloseHandle(hConnect);
    WinHttpCloseHandle(hSession);

    return response;
}

int main() {
    std::string response = AmazonSignIn();
    std::cout << "Response: " << response << std::endl;
    return 0;
}

注意事项：

1. 要设置WINHTTP_FLAG_SECURE来指示使用HTTPS协议。
2. 要获取响应头部信息，可以先调用一次WinHttpQueryHeaders来获取需要的缓冲区大小，然后再分配缓冲区并调用一次WinHttpQueryHeaders来获取头部信息。
3. 要获取响应内容，可以使用WinHttpReadData来逐个读取数据块，并将它们附加到响应字符串中。
4. 这个函数只是一个简单的示例，实际使用时可能需要添加更多的错误处理和异常情况的处理。