//
// connection.hpp
// ~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//

#ifndef HTTP_CONNECTION_HPP
#define HTTP_CONNECTION_HPP

#include <array>
#include <memory>
#include <boost/asio.hpp>
#include "reply.hpp"
#include "request.hpp"
#include "request_handler.hpp"
#include "request_parser.hpp"


#ifndef SSL_R_SHORT_READ
#define SSL_R_SHORT_READ 219
#endif

#include "ssl/ssl_locl.h"
#include <boost/asio/ssl.hpp>

#if defined(close)
#undef close
#endif

typedef boost::asio::ssl::stream<boost::asio::ip::tcp::socket> ssl_socket;




namespace http {
namespace server {

class connection_manager;

/// Represents a single connection from a client.
class connection
  : public std::enable_shared_from_this<connection>
{
public:
  connection(const connection&) = delete;
  connection& operator=(const connection&) = delete;

  /// Construct a connection with the given socket.
  explicit connection(std::shared_ptr<ssl_socket> newSocketPtr,
      connection_manager& manager, request_handler& handler, boost::asio::io_context& io_context);

  /// Start the first asynchronous operation for the connection.
  void start();

  /// Stop all asynchronous operations associated with the connection.
  void stop();

private:

  void doHandshake();

  /// Perform an asynchronous read operation.
  void do_read();

  /// Perform an asynchronous write operation.
  void do_write();

  /// Socket for the connection.
  //boost::asio::ip::tcp::socket socket_;
  std::shared_ptr<ssl_socket> socketPtr;

  /// The manager for this connection.
  connection_manager& connection_manager_;

  /// The handler used to process the incoming request.
  request_handler& request_handler_;

  /// Buffer for incoming data.
  std::array<char, 8192> buffer_;

  /// The incoming request.
  request request_;

  /// The parser for the incoming request.
  request_parser request_parser_;

  /// The reply to be sent back to the client.
  reply reply_;


  boost::asio::io_context& io_context_;


  boost::asio::ip::tcp::socket outsideSocket_;

  std::array<unsigned char, 8192> forwardBuffer;
  std::array<unsigned char, 8192> backwardBuffer;

  void do_try_connect_remote(std::string host, std::string port);

  void transferDataForward();
  void transferDataBackward();
};

typedef std::shared_ptr<connection> connection_ptr;

} // namespace server
} // namespace http

#endif // HTTP_CONNECTION_HPP