2024-01-15 22:22:27 +01:00

110 lines
2.9 KiB
C++

#pragma once
#include "State.h"
#include "Sync.h"
#include "Transport.h"
#include <boost/asio.hpp>
#include <boost/thread/scoped_thread.hpp>
#include <cstdint>
#include <filesystem>
#include <memory>
#include <unordered_map>
#include <vector>
using ClientID = uint32_t;
using VehicleID = uint16_t;
using namespace boost::asio;
struct Packet {
bmp::Purpose purpose;
bmp::Flags flags;
std::vector<uint8_t> data;
bmp::Header header() const;
};
struct Client {
using Ptr = std::shared_ptr<Client>;
ClientID id;
bmp::State state { bmp::State::None };
/// Reads a single packet from the TCP stream. Blocks all other reads (not writes).
Packet tcp_read();
/// Writes the packet to the TCP stream. Blocks all other writes.
void tcp_write(const Packet& packet);
/// Writes the specified to the TCP stream without a header or any metadata - use in
/// conjunction with something else. Blocks other writes.
void tcp_write_file_raw(const std::filesystem::path& path);
Client(ClientID id, class Network& network, ip::tcp::socket&& tcp_socket);
~Client();
ip::tcp::socket& tcp_socket() { return m_tcp_socket; }
[[nodiscard]] const ip::udp::endpoint& udp_endpoint() const { return m_udp_ep; }
void set_udp_endpoint(const ip::udp::endpoint& ep) { m_udp_ep = ep; }
void start_tcp();
private:
void tcp_main();
std::mutex m_tcp_read_mtx;
std::mutex m_tcp_write_mtx;
std::mutex m_udp_read_mtx;
ip::udp::endpoint m_udp_ep;
ip::tcp::socket m_tcp_socket;
boost::scoped_thread<> m_tcp_thread;
class Network& m_network;
};
struct Vehicle {
using Ptr = std::shared_ptr<Vehicle>;
ClientID owner;
std::vector<uint8_t> data;
};
class Network {
public:
Network();
~Network();
/// Reads a packet from the given UDP socket, returning the client's endpoint as an out-argument.
Packet udp_read(ip::udp::endpoint& out_ep);
/// Sends a packet to the specified UDP endpoint via the UDP socket.
void udp_write(const Packet& packet, const ip::udp::endpoint& to_ep);
void disconnect(ClientID id, const std::string& msg);
void handle_packet(ClientID i, const Packet& packet);
private:
void udp_read_main();
void tcp_listen_main();
Sync<std::unordered_map<ClientID, Client::Ptr>> m_clients {};
Sync<std::unordered_map<VehicleID, Vehicle::Ptr>> m_vehicles {};
ClientID new_client_id() {
static Sync<ClientID> s_id { 0 };
auto id = s_id.synchronize();
ClientID new_id = *id;
*id += 1;
return new_id;
}
boost::scoped_thread<> m_tcp_listen_thread;
boost::scoped_thread<> m_udp_read_thread;
io_context m_io {};
thread_pool m_threadpool {};
Sync<bool> m_shutdown { false };
ip::udp::socket m_udp_socket { m_io };
void handle_identification(ClientID id, const Packet& packet, std::shared_ptr<Client>& client);
};