Variables and function used internally. More...

#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"

Data Structures
struct	CommandPacket
	Everything we need to know about a command to be able to execute it. More...

Typedefs
typedef class ServerNetworkGameSocketHandler	NetworkClientSocket

Enumerations
enum	NetworkJoinStatus { NETWORK_JOIN_STATUS_CONNECTING , NETWORK_JOIN_STATUS_AUTHORIZING , NETWORK_JOIN_STATUS_WAITING , NETWORK_JOIN_STATUS_DOWNLOADING , NETWORK_JOIN_STATUS_PROCESSING , NETWORK_JOIN_STATUS_REGISTERING , NETWORK_JOIN_STATUS_GETTING_COMPANY_INFO , NETWORK_JOIN_STATUS_END }
	Status of the clients during joining.

Functions
void	NetworkQueryServer (const std::string &connection_string)
	Query a server to fetch the game-info. More...

void	GetBindAddresses (NetworkAddressList *addresses, uint16_t port)
	Get the addresses to bind to. More...

struct NetworkGameList *	NetworkAddServer (const std::string &connection_string, bool manually=true, bool never_expire=false)
	Validates an address entered as a string and adds the server to the list. More...

void	NetworkRebuildHostList ()

void	UpdateNetworkGameWindow ()
	Update the network new window because a new server is found on the network.

void	NetworkDistributeCommands ()
	Distribute the commands of ourself and the clients.

void	NetworkExecuteLocalCommandQueue ()
	Execute all commands on the local command queue that ought to be executed this frame.

void	NetworkFreeLocalCommandQueue ()
	Free the local command queues.

void	NetworkSyncCommandQueue (NetworkClientSocket *cs)
	Sync our local command queue to the command queue of the given socket. More...

void	NetworkReplaceCommandClientId (CommandPacket &cp, ClientID client_id)

void	ShowNetworkError (StringID error_string)

void	NetworkTextMessage (NetworkAction action, TextColour colour, bool self_send, const std::string &name, const std::string &str="", int64_t data=0, const std::string &data_str="")

uint	NetworkCalculateLag (const NetworkClientSocket *cs)

StringID	GetNetworkErrorMsg (NetworkErrorCode err)
	Retrieve the string id of an internal error number. More...

bool	NetworkMakeClientNameUnique (std::string &new_name)
	Check whether a name is unique, and otherwise try to make it unique. More...

std::string_view	ParseCompanyFromConnectionString (const std::string &connection_string, CompanyID *company_id)
	Parse the company part ("#company" postfix) of a connecting string. More...

NetworkAddress	ParseConnectionString (const std::string &connection_string, uint16_t default_port)
	Convert a string containing either "hostname" or "hostname:ip" to a NetworkAddress. More...

std::string	NormalizeConnectionString (const std::string &connection_string, uint16_t default_port)
	Normalize a connection string. More...

void	ClientNetworkEmergencySave ()
	Create an emergency savegame when the network connection is lost.

Variables
uint32_t	_frame_counter_server
	The frame_counter of the server, if in network-mode.

uint32_t	_frame_counter_max
	To where we may go with our clients.

uint32_t	_frame_counter
	The current frame.

uint32_t	_last_sync_frame
	Used in the server to store the last time a sync packet was sent to clients.

NetworkAddressList	_broadcast_list
	List of broadcast addresses.

uint32_t	_sync_seed_1
	Seed to compare during sync checks.

uint32_t	_sync_frame
	The frame to perform the sync check.

bool	_network_first_time
	Whether we have finished joining or not.

NetworkJoinStatus	_network_join_status
	The status of joining.

uint8_t	_network_join_waiting
	The number of clients waiting in front of us.

uint32_t	_network_join_bytes
	The number of bytes we already downloaded.

uint32_t	_network_join_bytes_total
	The total number of bytes to download.

ConnectionType	_network_server_connection_type
	What type of connection the Game Coordinator detected we are on.

std::string	_network_server_invite_code
	Our invite code as indicated by the Game Coordinator.

std::string	_network_server_name
	The current name of the server you are on.

uint8_t	_network_reconnect
	Reconnect timeout.

Detailed Description

Variables and function used internally.

Definition in file network_internal.h.

Function Documentation

◆ GetBindAddresses()

void GetBindAddresses	(	NetworkAddressList *	addresses,
		uint16_t	port
	)

Get the addresses to bind to.

Parameters

addresses	the list to write to.
port	the port to bind to.

Definition at line 720 of file network.cpp.

Referenced by NetworkUDPInitialize().

◆ GetNetworkErrorMsg()

StringID GetNetworkErrorMsg ( NetworkErrorCode err )

Retrieve the string id of an internal error number.

Parameters

err	NetworkErrorCode

Returns: the StringID

Definition at line 315 of file network.cpp.

References lengthof.

Referenced by ServerNetworkGameSocketHandler::Receive_CLIENT_ERROR(), ServerNetworkAdminSocketHandler::SendError(), and ServerNetworkGameSocketHandler::SendError().

◆ NetworkAddServer()

struct NetworkGameList* NetworkAddServer	(	const std::string &	connection_string,
		bool	manually,
		bool	never_expire
	)

Validates an address entered as a string and adds the server to the list.

If you use this function, the games will be marked as manually added.

Parameters

connection_string	The IP:port of the server to add.
manually	Whether the enter should be marked as manual added.
never_expire	Whether the entry can expire (removed when no longer found in the public listing).

Returns: The entry on the game list.

Definition at line 694 of file network.cpp.

References ClearGRFConfigList(), NetworkServerGameInfo::grfconfig, NetworkGameList::info, NetworkGameList::manually, NetworkGameListAddItem(), NetworkQueryServer(), NetworkServerGameInfo::server_name, UpdateNetworkGameWindow(), and NetworkGameList::version.

Referenced by ClientNetworkUDPSocketHandler::Receive_SERVER_RESPONSE().

◆ NetworkMakeClientNameUnique()

bool NetworkMakeClientNameUnique ( std::string & name )

Check whether a name is unique, and otherwise try to make it unique.

Parameters

new_name The name to check/modify.

Returns: True if an unique name was achieved.

Definition at line 1614 of file network_server.cpp.

References CLIENT_ID_SERVER, NetworkClientInfo::client_name, NetworkClientInfo::GetByClientID(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem<&_networkclientinfo_pool >::Iterate(), MAX_CLIENTS, and NETWORK_CLIENT_NAME_LENGTH.

Referenced by NetworkUpdateClientName().

◆ NetworkQueryServer()

void NetworkQueryServer ( const std::string & connection_string )

Query a server to fetch the game-info.

Parameters

connection_string the address to query.

Definition at line 672 of file network.cpp.

References _network_available, Debug, NetworkGameListAddItem(), and NetworkGameList::refreshing.

Referenced by NetworkAddServer().

◆ NetworkSyncCommandQueue()

void NetworkSyncCommandQueue ( NetworkClientSocket * cs )

Sync our local command queue to the command queue of the given socket.

This is needed for the case where we receive a command before saving the game for a joining client, but without the execution of those commands. Not syncing those commands means that the client will never get them and as such will be in a desynced state from the time it started with joining.

Parameters

cs	The client to sync the queue to.

Definition at line 234 of file network_command.cpp.

References _local_execution_queue, and CommandPacket::callback.

◆ NormalizeConnectionString()

std::string NormalizeConnectionString	(	const std::string &	connection_string,
		uint16_t	default_port
	)

Normalize a connection string.

That is, ensure there is a port in the string.

Parameters

connection_string	The connection string to normalize.
default_port	The port to use if none is given.

Returns: The normalized connection string.

Definition at line 543 of file network.cpp.

◆ ParseCompanyFromConnectionString()

std::string_view ParseCompanyFromConnectionString	(	const std::string &	connection_string,
		CompanyID *	company_id
	)

Parse the company part ("#company" postfix) of a connecting string.

Parameters

connection_string	The string with the connection data.
company_id	The company ID to set, if available.

Returns: A std::string_view into the connection string without the company part.

Definition at line 479 of file network.cpp.

References COMPANY_NEW_COMPANY, COMPANY_SPECTATOR, and MAX_COMPANIES.

◆ ParseConnectionString()

NetworkAddress ParseConnectionString	(	const std::string &	connection_string,
		uint16_t	default_port
	)

Convert a string containing either "hostname" or "hostname:ip" to a NetworkAddress.

Parameters

connection_string	The string to parse.
default_port	The default port to set port to if not in connection_string.

Returns: A valid NetworkAddress of the parsed information.

Definition at line 558 of file network.cpp.

Referenced by TCPConnecter::Resolve().

Data Structures

Typedefs

Enumerations

Functions

Variables

Detailed Description

Function Documentation

◆ GetBindAddresses()

◆ GetNetworkErrorMsg()

◆ NetworkAddServer()

◆ NetworkMakeClientNameUnique()

◆ NetworkQueryServer()

◆ NetworkSyncCommandQueue()

◆ NormalizeConnectionString()

◆ ParseCompanyFromConnectionString()

◆ ParseConnectionString()