network_internal.h

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/*
 * This file is part of OpenTTD.
 * OpenTTD 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, version 2.
 * OpenTTD 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 OpenTTD. If not, see <https://www.gnu.org/licenses/old-licenses/gpl-2.0>.
 */

 
#ifndef NETWORK_INTERNAL_H
#define NETWORK_INTERNAL_H
 
#include "network_func.h"
#include "core/tcp_coordinator.h"
#include "core/tcp_game.h"
 
#include "../command_type.h"
#include "../command_func.h"
#include "../misc/endian_buffer.hpp"
#include "../strings_type.h"
 
#ifdef RANDOM_DEBUG
#define ENABLE_NETWORK_SYNC_EVERY_FRAME

#define NETWORK_SEND_DOUBLE_SEED
#endif /* RANDOM_DEBUG */
 
typedef class ServerNetworkGameSocketHandler NetworkClientSocket;

enum class NetworkJoinStatus : uint8_t {
  Connecting, 
  Authorizing, 
  Waiting, 
  Downloading, 
  Processing, 
  Registering, 
 
  End, 
};
 
extern uint32_t _frame_counter_server; // The frame_counter of the server, if in network-mode
extern uint32_t _frame_counter_max; // To where we may go with our clients
extern uint32_t _frame_counter;
 
extern uint32_t _last_sync_frame; // Used in the server to store the last time a sync packet was sent to clients.
 
/* networking settings */
extern NetworkAddressList _broadcast_list;
 
extern uint32_t _sync_seed_1;
#ifdef NETWORK_SEND_DOUBLE_SEED
extern uint32_t _sync_seed_2;
#endif
extern uint32_t _sync_frame;
extern bool _network_first_time;
/* Vars needed for the join-GUI */
extern NetworkJoinStatus _network_join_status;
extern uint8_t _network_join_waiting;
extern uint32_t _network_join_bytes;
extern uint32_t _network_join_bytes_total;
extern ConnectionType _network_server_connection_type;
extern std::string _network_server_invite_code;
 
/* Variable available for clients. */
extern std::string _network_server_name;
 
extern uint8_t _network_reconnect;
 
void NetworkQueryServer(std::string_view connection_string);
 
void GetBindAddresses(NetworkAddressList *addresses, uint16_t port);
struct NetworkGame *NetworkAddServer(std::string_view connection_string, bool manually = true, bool never_expire = false);
void NetworkRebuildHostList();
void UpdateNetworkGameWindow();
 
/* From network_command.cpp */
struct CommandPacket {
  CompanyID company = CompanyID::Invalid(); 
  uint32_t frame = 0; 
  bool my_cmd = false; 
 
  Commands cmd{}; 
  StringID err_msg{}; 
  CommandCallback *callback = nullptr; 
  CommandDataBuffer data{}; 
};
 
void NetworkDistributeCommands();
void NetworkExecuteLocalCommandQueue();
void NetworkFreeLocalCommandQueue();
void NetworkSyncCommandQueue(NetworkClientSocket *cs);
void NetworkReplaceCommandClientId(CommandPacket &cp, ClientID client_id);
 
void ShowNetworkError(StringID error_string);
void NetworkTextMessage(NetworkAction action, TextColour colour, bool self_send, std::string_view name, std::string_view str = {}, StringParameter &&data = {});
uint NetworkCalculateLag(const NetworkClientSocket *cs);
StringID GetNetworkErrorMsg(NetworkErrorCode err);
bool NetworkMakeClientNameUnique(std::string &new_name);
 
std::string_view ParseCompanyFromConnectionString(std::string_view connection_string, CompanyID *company_id);
NetworkAddress ParseConnectionString(std::string_view connection_string, uint16_t default_port);
std::string NormalizeConnectionString(std::string_view connection_string, uint16_t default_port);
 
void ClientNetworkEmergencySave();
 
#endif /* NETWORK_INTERNAL_H */