udp_client.h

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/* Diagnostic Client library
 * Copyright (C) 2024  Avijit Dey
 * 
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
#ifndef DIAG_CLIENT_LIB_LIB_BOOST_SUPPORT_SOCKET_UDP_UDP_CLIENT_H_
#define DIAG_CLIENT_LIB_LIB_BOOST_SUPPORT_SOCKET_UDP_UDP_CLIENT_H_
// includes
#include <boost/asio.hpp>
#include <string>
#include <string_view>
#include <thread>
#include <vector>
 
#include "core/include/result.h"
#include "socket/udp/udp_message.h"
 
namespace boost_support {
namespace socket {
namespace udp {
 
class UdpClientSocket final {
 public:
  enum class UdpErrorCode : std::uint8_t { kOpenFailed, kBindingFailed, kGenericError };
 
  enum class PortType : std::uint8_t { kUdp_Broadcast = 0, kUdp_Unicast };
 
  using UdpHandlerRead = std::function<void(UdpMessagePtr)>;
 
 public:
  UdpClientSocket(std::string_view local_ip_address, std::uint16_t local_port_num, PortType port_type,
                  UdpHandlerRead udp_handler_read);
 
  virtual ~UdpClientSocket();
 
  core_type::Result<void, UdpErrorCode> Open();
 
  core_type::Result<void, UdpErrorCode> Transmit(UdpMessageConstPtr udp_message);
 
  core_type::Result<void, UdpErrorCode> Destroy();
 
 private:
  using Udp = boost::asio::ip::udp;
 
  using UdpSocket = Udp::socket;
 
  using UdpIpAddress = boost::asio::ip::address;
 
  using UdpErrorCodeType = boost::system::error_code;
 
  std::string local_ip_address_;
 
  std::uint16_t local_port_num_;
 
  boost::asio::io_context io_context_;
 
  UdpSocket udp_socket_;
 
  std::atomic_bool exit_request_;
 
  std::atomic_bool running_;
 
  std::condition_variable cond_var_;
 
  std::thread thread_;
 
  std::mutex mutex_;
 
  Udp::endpoint remote_endpoint_;
 
  PortType port_type_;
 
  UdpHandlerRead udp_handler_read_;
 
  std::array<std::uint8_t, kDoipUdpResSize> rx_buffer_;
 
 private:
  void HandleMessage(const UdpErrorCodeType &error, std::size_t bytes_received);
};
}  // namespace udp
}  // namespace socket
}  // namespace boost_support
#endif  // DIAG_CLIENT_LIB_LIB_BOOST_SUPPORT_SOCKET_UDP_UDP_CLIENT_H_