/*
This file is part of libhttpserver
Copyright (C) 2011-2019 Sebastiano Merlino
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
USA
*/
#if !defined (_HTTPSERVER_HPP_INSIDE_) && !defined (HTTPSERVER_COMPILATION)
#error "Only or can be included directly."
#endif
#ifndef SRC_HTTPSERVER_DEFERRED_RESPONSE_HPP_
#define SRC_HTTPSERVER_DEFERRED_RESPONSE_HPP_
#include
#include
#include
#include
#include
#include "httpserver/http_utils.hpp"
#include "httpserver/string_response.hpp"
struct MHD_Response;
namespace httpserver {
namespace details {
MHD_Response* get_raw_response_helper(void* cls, ssize_t (*cb)(void*, uint64_t, char*, size_t));
}
template
class deferred_response : public string_response {
public:
explicit deferred_response(
ssize_t(*cycle_callback)(std::shared_ptr, char*, size_t),
std::shared_ptr closure_data,
const std::string& content = "",
int response_code = http::http_utils::http_ok,
const std::string& content_type = http::http_utils::text_plain):
string_response(content, response_code, content_type),
cycle_callback(cycle_callback),
closure_data(closure_data) { }
deferred_response(const deferred_response& other) = default;
deferred_response(deferred_response&& other) noexcept = default;
deferred_response& operator=(const deferred_response& b) = default;
deferred_response& operator=(deferred_response&& b) = default;
~deferred_response() = default;
MHD_Response* get_raw_response() {
return details::get_raw_response_helper(reinterpret_cast(this), &cb);
}
private:
ssize_t (*cycle_callback)(std::shared_ptr, char*, size_t);
std::shared_ptr closure_data;
static ssize_t cb(void* cls, uint64_t, char* buf, size_t max) {
deferred_response* dfr = static_cast*>(cls);
return dfr->cycle_callback(dfr->closure_data, buf, max);
}
};
} // namespace httpserver
#endif // SRC_HTTPSERVER_DEFERRED_RESPONSE_HPP_