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/*
Copyright (c) 2015, Arvid Norberg
All rights reserved.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef HTTP_SERVER_HPP_INCLUDED
#define HTTP_SERVER_HPP_INCLUDED
#include "simulator/simulator.hpp"
#include <string>
#ifdef _MSC_VER
#pragma warning(push)
// warning C4251: X: class Y needs to have dll-interface to be used by clients of struct
#pragma warning( disable : 4251)
#endif
namespace sim
{
std::string SIMULATOR_DECL trim(std::string s);
std::string SIMULATOR_DECL lower_case(std::string s);
std::string SIMULATOR_DECL normalize(const std::string& s);
// returns the index to the last byte of the request, or -1 if the buffer
// does not contain a full http request
int SIMULATOR_DECL find_request_len(char const* buf, int len);
struct http_request
{
std::string method;
std::string req;
std::string path;
std::map<std::string, std::string> headers;
};
http_request parse_request(char const* start, int len);
// builds an HTTP response buffer
std::string SIMULATOR_DECL send_response(int code, char const* status_message
, int len = 0, char const** extra_header = NULL);
// This is a very simple http server that only supports a single concurrent
// connection
struct SIMULATOR_DECL http_server
{
enum flags_t
{
keep_alive = 1
};
http_server(asio::io_context& ios, unsigned short listen_port
, int flags = http_server::keep_alive);
void stop();
using handler_t = std::function<std::string (std::string, std::string
, std::map<std::string, std::string>&)>;
using generator_t = std::function<std::string (std::int64_t, std::int64_t)>;
void register_handler(std::string const& path, handler_t h);
void register_content(std::string const& path
, std::int64_t const size, generator_t gen);
void register_redirect(std::string const& path, std::string const& target);
void register_stall_handler(std::string const& path);
private:
void on_accept(boost::system::error_code const& ec);
void read();
void on_read(boost::system::error_code const& ec, size_t bytes_transferred);
void on_write(boost::system::error_code const& ec, size_t bytes_transferred
, bool close);
void close_connection();
asio::io_context& m_ios;
asio::ip::tcp::acceptor m_listen_socket;
asio::ip::tcp::socket m_connection;
asio::ip::tcp::endpoint m_ep;
std::unordered_map<std::string, handler_t> m_handlers;
std::set<std::string> m_stall_handlers;
// read buffer, we receive bytes into this buffer for the connection
std::string m_recv_buffer;
// the number of bytes of m_recv_buffer that we've actually read data into.
// The remaining is uninitialized, possibly being read into in an async call
int m_bytes_used;
std::string m_send_buffer;
// set to true when shutting down
bool m_close;
int m_flags;
};
}
#ifdef _MSC_VER
#pragma warning(pop)
#endif
#endif
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