140 lines
6.5 KiB
C++
140 lines
6.5 KiB
C++
/*
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* InfiniPaint
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* Copyright (C) 2025-2026 Yousef Khadadeh
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <memory>
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#include <string>
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#include <rtc/rtc.hpp>
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#include <mutex>
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#include <unordered_map>
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#include <cereal/archives/portable_binary.hpp>
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#include <cereal/cereal.hpp>
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#include <array>
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#include "ByteStream.hpp"
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#include "NetLibrary.hpp"
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class NetServer : public std::enable_shared_from_this<NetServer> {
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public:
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struct ClientData;
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typedef std::function<void(std::shared_ptr<ClientData>, cereal::PortableBinaryInputArchive&)> NetServerRecvCallback;
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typedef std::function<void(std::shared_ptr<ClientData>)> NetServerConnectCallback;
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typedef std::function<void(std::shared_ptr<ClientData>)> NetServerDisconnectCallback;
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struct ClientData : public std::enable_shared_from_this<ClientData> {
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std::unordered_map<std::string, std::queue<std::shared_ptr<std::stringstream>>> messages;
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std::unordered_map<std::string, PartialFragmentMessage> pfm;
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MessageOrder nextMessageOrderToSend = 0;
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MessageOrder nextMessageOrderToExpect = 0;
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std::unordered_map<std::string, std::shared_ptr<rtc::DataChannel>> channels;
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std::mutex receivedMessagesMutex;
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struct ReceivedMessage {
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std::string channel;
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rtc::binary data;
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};
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std::queue<ReceivedMessage> receivedMessages;
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struct OutgoingMessage {
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MessageOrder order;
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std::shared_ptr<std::stringstream> ss;
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};
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std::unordered_map<std::string, std::queue<OutgoingMessage>> messageQueues;
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std::array<uint64_t, 2> customID;
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void send_queued_messages(NetServer& server);
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void parse_received_messages(NetServer& server);
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void parse_multi_command_id(NetServer& server, cereal::PortableBinaryInputArchive& a);
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void send_str_as_bytes(std::shared_ptr<rtc::DataChannel> channel, const std::string& str);
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NetLibrary::DownloadProgress get_progress_into_fragmented_message(const std::string& channel) const;
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std::atomic<bool> setToDisconnect = false;
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std::chrono::steady_clock::time_point lastMessageTime;
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friend class NetServer;
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friend class NetClient;
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};
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NetServer(const std::string& serverLocalID);
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~NetServer();
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void update();
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template <typename... Args> void send_items_to_client(const std::shared_ptr<ClientData>& client, const std::string& channel, Args&&... items) {
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send_string_stream_to_client(client, channel, get_string_stream_from_items(items...));
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}
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template <typename... Args> void send_items_to_all_clients(const std::string& channel, Args&&... items) {
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send_string_stream_to_all_clients(channel, get_string_stream_from_items(items...));
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}
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template <typename... Args> void send_items_to_all_clients_except(const std::shared_ptr<ClientData>& client, const std::string& channel, Args&&... items) {
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send_string_stream_to_all_clients_except(client, channel, get_string_stream_from_items(items...));
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}
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template <typename... Args> void send_items_to_client_if(std::function<bool(const std::shared_ptr<ClientData>&)> clientChecker, const std::string& channel, Args&&... items) {
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send_string_stream_to_client_if(clientChecker, channel, get_string_stream_from_items(items...));
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}
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template <typename... Args> std::shared_ptr<std::stringstream> get_string_stream_from_items(Args&&... items) {
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auto ss(std::make_shared<std::stringstream>(std::ios::binary | std::ios::out));
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{
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cereal::PortableBinaryOutputArchive m(*ss);
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(m(items), ...);
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}
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return ss;
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}
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void send_string_stream_to_client(const std::shared_ptr<ClientData>& client, const std::string& channel, const std::shared_ptr<std::stringstream>& ss);
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void send_string_stream_to_all_clients(const std::string& channel, const std::shared_ptr<std::stringstream>& ss);
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void send_string_stream_to_all_clients_except(const std::shared_ptr<ClientData>& client, const std::string& channel, const std::shared_ptr<std::stringstream>& ss);
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void send_string_stream_to_client_if(std::function<bool(const std::shared_ptr<ClientData>&)> clientChecker, const std::string& channel, const std::shared_ptr<std::stringstream>& ss);
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void send_multi_command_to_all_clients(const std::string& channel, const std::function<void()>& captureSendBlock);
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bool is_disconnected() const;
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void add_recv_callback(MessageCommandType commandID, const NetServerRecvCallback& callback);
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void add_disconnect_callback(const NetServerDisconnectCallback& callback);
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const std::vector<std::shared_ptr<ClientData>>& get_client_list() const;
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private:
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void parse_received_messages();
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void send_queued_messages();
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void client_connected(std::shared_ptr<rtc::PeerConnection> connection, const std::string& clientLocalID);
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std::atomic<bool> isDisconnected = false;
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std::string localID;
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std::vector<std::shared_ptr<ClientData>> clients;
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// Adding an add list, because i dont want to block the entire clients vector with a mutex
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std::mutex clientsToAddMutex;
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std::vector<std::shared_ptr<ClientData>> clientsToAdd;
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std::unordered_map<MessageCommandType, NetServerRecvCallback> recvCallbacks;
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NetServerDisconnectCallback disconnectCallback;
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NetClient* directConnectClient = nullptr;
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std::shared_ptr<ClientData> directConnectClientData;
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struct MultiCommandData {
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std::string channelToSendTo;
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std::vector<std::string> commands;
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};
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std::weak_ptr<MultiCommandData> multiCommandData;
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friend class NetLibrary;
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friend class NetClient;
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};
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