Connection to a remote network host. More...

#include </home/runner/work/urho3d-doxygen.github.io/urho3d-doxygen.github.io/urho3d_repo/Source/Urho3D/Network/Connection.h>

Inheritance diagram for Urho3D::Connection:

Public Member Functions
	Connection (Context context, bool isClient, const SLNet::AddressOrGUID &address, SLNet::RakPeerInterface peer)
	Construct with context, RakNet connection address and Raknet peer pointer.

	~Connection () override
	Destruct.

PacketType	GetPacketType (bool reliable, bool inOrder)
	Get packet type based on the message parameters.

void	SendMessage (int msgID, bool reliable, bool inOrder, const VectorBuffer &msg, unsigned contentID=0)
	Send a message.

void	SendMessage (int msgID, bool reliable, bool inOrder, const byte *data, unsigned numBytes, unsigned contentID=0)
	Send a message.

void	SendRemoteEvent (StringHash eventType, bool inOrder, const VariantMap &eventData=Variant::emptyVariantMap)
	Send a remote event.

void	SendRemoteEvent (Node *node, StringHash eventType, bool inOrder, const VariantMap &eventData=Variant::emptyVariantMap)
	Send a remote event with the specified node as sender.

void	SetScene (Scene *newScene)
	Assign scene. On the server, this will cause the client to load it.

void	SetIdentity (const VariantMap &identity)
	Assign identity. Called by Network.

void	SetControls (const Controls &newControls)
	Set new controls.

void	SetPosition (const Vector3 &position)
	Set the observer position for interest management, to be sent to the server.

void	SetRotation (const Quaternion &rotation)
	Set the observer rotation for interest management, to be sent to the server. Note: not used by the NetworkPriority component.

void	SetConnectPending (bool connectPending)
	Set the connection pending status. Called by Network.

void	SetLogStatistics (bool enable)
	Set whether to log data in/out statistics.

void	Disconnect (int waitMSec=0)
	Disconnect. If wait time is non-zero, will block while waiting for disconnect to finish.

void	SendServerUpdate ()
	Send scene update messages. Called by Network.

void	SendClientUpdate ()
	Send latest controls from the client. Called by Network.

void	SendRemoteEvents ()
	Send queued remote events. Called by Network.

void	SendPackages ()
	Send package files to client. Called by network.

void	SendBuffer (PacketType type)
	Send out buffered messages by their type.

void	SendAllBuffers ()
	Send out all buffered messages.

void	ProcessPendingLatestData ()
	Process pending latest data for nodes and components.

bool	ProcessMessage (int msgID, MemoryBuffer &buffer)
	Process a message from the server or client. Called by Network.

void	Ban ()
	Ban this connections IP address.

const SLNet::AddressOrGUID &	GetAddressOrGUID () const
	Return the RakNet address/guid.

void	SetAddressOrGUID (const SLNet::AddressOrGUID &addr)
	Set the the RakNet address/guid.

VariantMap &	GetIdentity ()
	Return client identity.

Scene *	GetScene () const
	Return the scene used by this connection.

const Controls &	GetControls () const
	Return the client controls of this connection.

unsigned char	GetTimeStamp () const
	Return the controls timestamp, sent from client to server along each control update.

const Vector3 &	GetPosition () const
	Return the observer position sent by the client for interest management.

const Quaternion &	GetRotation () const
	Return the observer rotation sent by the client for interest management.

bool	IsClient () const
	Return whether is a client connection.

bool	IsConnected () const
	Return whether is fully connected.

bool	IsConnectPending () const
	Return whether connection is pending.

bool	IsSceneLoaded () const
	Return whether the scene is loaded and ready to receive server updates.

bool	GetLogStatistics () const
	Return whether to log data in/out statistics.

String	GetAddress () const
	Return remote address.

unsigned short	GetPort () const
	Return remote port.

float	GetRoundTripTime () const
	Return the connection's round trip time in milliseconds.

unsigned	GetLastHeardTime () const
	Return the time since last received data from the remote host in milliseconds.

float	GetBytesInPerSec () const
	Return bytes received per second.

float	GetBytesOutPerSec () const
	Return bytes sent per second.

int	GetPacketsInPerSec () const
	Return packets received per second.

int	GetPacketsOutPerSec () const
	Return packets sent per second.

String	ToString () const
	Return an address:port string.

unsigned	GetNumDownloads () const
	Return number of package downloads remaining.

const String &	GetDownloadName () const
	Return name of current package download, or empty if no downloads.

float	GetDownloadProgress () const
	Return progress of current package download, or 1.0 if no downloads.

void	SendPackageToClient (PackageFile *package)
	Trigger client connection to download a package file from the server. Can be used to download additional resource packages when client is already joined in a scene. The package must have been added as a requirement to the scene the client is joined in, or else the eventual download will fail.

void	ConfigureNetworkSimulator (int latencyMs, float packetLoss)
	Set network simulation parameters. Called by Network.

void	SetPacketSizeLimit (int limit)
	Buffered packet size limit, when reached, packet is sent out immediately.

Public Member Functions inherited from Urho3D::Object
	Object (Context *context)
	Construct.

	~Object () override
	Destruct. Clean up self from event sender & receiver structures.

virtual StringHash	GetType () const =0
	Return type hash. More...

virtual const String &	GetTypeName () const =0
	Return type name. More...

virtual const TypeInfo *	GetTypeInfo () const =0
	Return type info.

virtual void	OnEvent (Object *sender, StringHash eventType, VariantMap &eventData)
	Handle event.

bool	IsInstanceOf (StringHash type) const
	Check current instance is type of specified type.

bool	IsInstanceOf (const TypeInfo *typeInfo) const
	Check current instance is type of specified type.

template<typename T >
bool	IsInstanceOf () const
	Check current instance is type of specified class.

template<typename T >
T *	Cast ()
	Cast the object to specified most derived class.

template<typename T >
const T *	Cast () const
	Cast the object to specified most derived class.

void	SubscribeToEvent (StringHash eventType, EventHandler *handler)
	Subscribe to an event that can be sent by any sender.

void	SubscribeToEvent (Object sender, StringHash eventType, EventHandler handler)
	Subscribe to a specific sender's event.

void	SubscribeToEvent (StringHash eventType, const std::function< void(StringHash, VariantMap &)> &function, void *userData=nullptr)
	Subscribe to an event that can be sent by any sender.

void	SubscribeToEvent (Object sender, StringHash eventType, const std::function< void(StringHash, VariantMap &)> &function, void userData=nullptr)
	Subscribe to a specific sender's event.

void	UnsubscribeFromEvent (StringHash eventType)
	Unsubscribe from an event.

void	UnsubscribeFromEvent (Object *sender, StringHash eventType)
	Unsubscribe from a specific sender's event.

void	UnsubscribeFromEvents (Object *sender)
	Unsubscribe from a specific sender's events.

void	UnsubscribeFromAllEvents ()
	Unsubscribe from all events.

void	UnsubscribeFromAllEventsExcept (const Vector< StringHash > &exceptions, bool onlyUserData)
	Unsubscribe from all events except those listed, and optionally only those with userdata (script registered events).

void	SendEvent (StringHash eventType)
	Send event to all subscribers.

void	SendEvent (StringHash eventType, VariantMap &eventData)
	Send event with parameters to all subscribers.

VariantMap &	GetEventDataMap () const
	Return a preallocated map for event data. Used for optimization to avoid constant re-allocation of event data maps.

template<typename... Args>
void	SendEvent (StringHash eventType, Args... args)
	Send event with variadic parameter pairs to all subscribers. The parameter pairs is a list of paramID and paramValue separated by comma, one pair after another.

Context *	GetContext () const
	Return execution context.

const Variant &	GetGlobalVar (StringHash key) const
	Return global variable based on key.

const VariantMap &	GetGlobalVars () const
	Return all global variables.

void	SetGlobalVar (StringHash key, const Variant &value)
	Set global variable with the respective key and value.

Object *	GetSubsystem (StringHash type) const
	Return subsystem by type.

Object *	GetEventSender () const
	Return active event sender. Null outside event handling.

EventHandler *	GetEventHandler () const
	Return active event handler. Null outside event handling.

bool	HasSubscribedToEvent (StringHash eventType) const
	Return whether has subscribed to an event without specific sender.

bool	HasSubscribedToEvent (Object *sender, StringHash eventType) const
	Return whether has subscribed to a specific sender's event.

bool	HasEventHandlers () const
	Return whether has subscribed to any event.

template<class T >
T *	GetSubsystem () const
	Template version of returning a subsystem.

const String &	GetCategory () const
	Return object category. Categories are (optionally) registered along with the object factory. Return an empty string if the object category is not registered.

void	SetBlockEvents (bool block)
	Block object from sending and receiving events.

bool	GetBlockEvents () const
	Return sending and receiving events blocking status.

Public Member Functions inherited from Urho3D::RefCounted
	RefCounted ()
	Construct. Allocate the reference count structure and set an initial self weak reference.

virtual	~RefCounted ()
	Destruct. Mark as expired and also delete the reference count structure if no outside weak references exist.

	RefCounted (const RefCounted &rhs)=delete
	Prevent copy construction.

RefCounted &	operator= (const RefCounted &rhs)=delete
	Prevent assignment.

void	AddRef ()
	Increment reference count. Can also be called outside of a SharedPtr for traditional reference counting.

void	ReleaseRef ()
	Decrement reference count and delete self if no more references. Can also be called outside of a SharedPtr for traditional reference counting.

int	Refs () const
	Return reference count.

int	WeakRefs () const
	Return weak reference count.

RefCount *	RefCountPtr ()
	Return pointer to the reference count structure.

Public Attributes
Controls	controls_
	Current controls.

unsigned char	timeStamp_
	Controls timestamp. Incremented after each sent update.

VariantMap	identity_
	Identity map.

Private Member Functions
	URHO3D_OBJECT (Connection, Object)

void	HandleAsyncLoadFinished (StringHash eventType, VariantMap &eventData)
	Handle scene loaded event.

void	ProcessLoadScene (int msgID, MemoryBuffer &msg)
	Process a LoadScene message from the server. Called by Network.

void	ProcessSceneChecksumError (int msgID, MemoryBuffer &msg)
	Process a SceneChecksumError message from the server. Called by Network.

void	ProcessSceneUpdate (int msgID, MemoryBuffer &msg)
	Process a scene update message from the server. Called by Network. More...

void	ProcessPackageDownload (int msgID, MemoryBuffer &msg)
	Process package download related messages. Called by Network.

void	ProcessIdentity (int msgID, MemoryBuffer &msg)
	Process an Identity message from the client. Called by Network.

void	ProcessControls (int msgID, MemoryBuffer &msg)
	Process a Controls message from the client. Called by Network.

void	ProcessSceneLoaded (int msgID, MemoryBuffer &msg)
	Process a SceneLoaded message from the client. Called by Network.

void	ProcessRemoteEvent (int msgID, MemoryBuffer &msg)
	Process a remote event message from the client or server. Called by Network.

void	ProcessNode (unsigned nodeID)
	Process a node for sending a network update. Recurses to process depended on node(s) first.

void	ProcessNewNode (Node *node)
	Process a node that the client has not yet received.

void	ProcessExistingNode (Node *node, NodeReplicationState &nodeState)
	Process a node that the client has already received. More...

void	ProcessPackageInfo (int msgID, MemoryBuffer &msg)
	Process a SyncPackagesInfo message from server.

void	ProcessUnknownMessage (int msgID, MemoryBuffer &msg)
	Process unknown message. All unknown messages are forwarded as an events.

bool	RequestNeededPackages (unsigned numPackages, MemoryBuffer &msg)
	Check a package list received from server and initiate package downloads as necessary. Return true on success, or false if failed to initialze downloads (cache dir not set).

void	RequestPackage (const String &name, unsigned fileSize, hash32 checksum)
	Initiate a package download.

void	SendPackageError (const String &name)
	Send an error reply for a package download.

void	OnSceneLoadFailed ()
	Handle scene load failure on the server or client.

void	OnPackageDownloadFailed (const String &name)
	Handle a package download failure on the client.

void	OnPackagesReady ()
	Handle all packages loaded successfully. Also called directly on MSG_LOADSCENE if there are none.

Private Attributes
WeakPtr< Scene >	scene_
	Scene.

SceneReplicationState	sceneState_
	Network replication state of the scene.

HashMap< StringHash, PackageDownload >	downloads_
	Waiting or ongoing package file receive transfers.

HashMap< StringHash, PackageUpload >	uploads_
	Ongoing package send transfers.

HashMap< unsigned, Vector< byte > >	nodeLatestData_
	Pending latest data for not yet received nodes.

HashMap< unsigned, Vector< byte > >	componentLatestData_
	Pending latest data for not yet received components.

HashSet< unsigned >	nodesToProcess_
	Node ID's to process during a replication update.

VectorBuffer	msg_
	Reusable message buffer.

Vector< RemoteEvent >	remoteEvents_
	Queued remote events.

String	sceneFileName_
	Scene file to load once all packages (if any) have been downloaded.

Timer	statsTimer_
	Statistics timer.

unsigned short	port_
	Remote endpoint port.

Vector3	position_
	Observer position for interest management.

Quaternion	rotation_
	Observer rotation for interest management.

ObserverPositionSendMode	sendMode_
	Send mode for the observer position & rotation.

bool	isClient_
	Client connection flag.

bool	connectPending_
	Connection pending flag.

bool	sceneLoaded_
	Scene loaded flag.

bool	logStatistics_
	Show statistics flag.

SLNet::AddressOrGUID *	address_
	Address of this connection.

SLNet::RakPeerInterface *	peer_
	Raknet peer object.

IntVector2	tempPacketCounter_
	Temporary variable to hold packet count in the next second, x - packets in, y - packets out.

IntVector2	packetCounter_
	Packet count in the last second, x - packets in, y - packets out.

Timer	packetCounterTimer_
	Packet count timer which resets every 1s.

Timer	lastHeardTimer_
	Last heard timer, resets when new packet is incoming.

HashMap< int, VectorBuffer >	outgoingBuffer_
	Outgoing packet buffer which can contain multiple messages.

int	packedMessageLimit_
	Outgoing packet size limit.

Additional Inherited Members
Static Public Member Functions inherited from Urho3D::Object
static const TypeInfo *	GetTypeInfoStatic ()
	Return type info static.

Protected Attributes inherited from Urho3D::Object
Context *	context_
	Execution context.

Detailed Description

Connection to a remote network host.

Member Function Documentation

◆ ProcessExistingNode()

void Urho3D::Connection::ProcessExistingNode	(	Node *	node,
		NodeReplicationState &	nodeState
	)

private

Process a node that the client has already received.

Todo:: Searching for the component is a potential CPU hotspot. It should be cached

◆ ProcessSceneUpdate()

void Urho3D::Connection::ProcessSceneUpdate	(	int	msgID,
		MemoryBuffer &	msg
	)

private

Process a scene update message from the server. Called by Network.

Todo:: On mobile devices processing this message may potentially cause a crash if it attempts to load new GPU resources while the application is minimized

The documentation for this class was generated from the following files:

/home/runner/work/urho3d-doxygen.github.io/urho3d-doxygen.github.io/urho3d_repo/Source/Urho3D/Network/Connection.h
/home/runner/work/urho3d-doxygen.github.io/urho3d-doxygen.github.io/urho3d_repo/Source/Urho3D/Network/Connection.cpp

Public Member Functions

Public Attributes

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ ProcessExistingNode()

◆ ProcessSceneUpdate()