如何在curlpp响应中获取头部响应和响应体分离

#include <curlpp/cURLpp.hpp>
#include <curlpp/Easy.hpp>
#include <curlpp/Options.hpp>

size_t headerCallback(char* buffer, size_t size, size_t nitems, std::list<std::string>* headers) {
    size_t totalSize = size * nitems;
    std::string header(buffer, totalSize);
    headers->push_back(header);
    return totalSize;
}

size_t bodyCallback(char* buffer, size_t size, size_t nitems, std::ostringstream* body) {
    size_t totalSize = size * nitems;
    body->write(buffer, totalSize);
    return totalSize;
}

int main() {
    try {
        curlpp::Cleanup cleanup;
        curlpp::Easy request;

        std::list<std::string> headers;
        std::ostringstream body;

        request.setOpt(curlpp::options::Url("http://example.com"));
        request.setOpt(curlpp::options::HeaderFunction(headerCallback, &headers));
        request.setOpt(curlpp::options::WriteFunction(bodyCallback, &body));

        request.perform();

        // 处理头部响应
        for (const auto& header : headers) {
            std::cout << header << std::endl;
        }

        // 处理响应体
        std::cout << body.str() << std::endl;

    } catch (curlpp::RuntimeError& e) {
        std::cerr << e.what() << std::endl;
    } catch (curlpp::LogicError& e) {
        std::cerr << e.what() << std::endl;
    }

    return 0;
}