Urho3D::Connection Class Reference

Connection to a remote network host. More...

#include <Connection.h>

Inheritance diagram for Urho3D::Connection:

Collaboration diagram for Urho3D::Connection:

Public Member Functions
	Connection (Context *context, bool isClient, kNet::SharedPtr< kNet::MessageConnection > connection)
	Construct with context and kNet message connection pointers. More...
	~Connection ()
	Destruct.
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 unsigned char *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	ProcessPendingLatestData ()
	Process pending latest data for nodes and components.
bool	ProcessMessage (int msgID, MemoryBuffer &msg)
	Process a message from the server or client. Called by Network.
kNet::MessageConnection *	GetMessageConnection () const
	Return the kNet message connection.
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.
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.
Public Member Functions inherited from Urho3D::Object
	Object (Context *context)
	Construct.
virtual	~Object ()
	Destruct. Clean up self from event sender & receiver structures.
virtual Urho3D::StringHash	GetType () const =0
	Return type hash.
virtual Urho3D::StringHash	GetBaseType () const =0
	Return base class type hash.
virtual const Urho3D::String &	GetTypeName () const =0
	Return type name.
virtual void	OnEvent (Object *sender, StringHash eventType, VariantMap &eventData)
	Handle event.
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	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 PODVector< 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. More...
VariantMap &	GetEventDataMap () const
	Return a preallocated map for event data. Used for optimization to avoid constant re-allocation of event data maps.
Context *	GetContext () const
	Return execution context.
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.
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.
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
	OBJECT (Connection)
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.
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, unsigned 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
kNet::SharedPtr < kNet::MessageConnection >	connection_
	kNet message connection.
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, PODVector < unsigned char > >	nodeLatestData_
	Pending latest data for not yet received nodes.
HashMap< unsigned, PODVector < unsigned char > >	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.
String	address_
	Remote endpoint address.
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.

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

Detailed Description

Connection to a remote network host.

Constructor & Destructor Documentation

Urho3D::Connection::Connection	(	Context *	context,
		bool	isClient,
		kNet::SharedPtr< kNet::MessageConnection >	connection
	)

Construct with context and kNet message connection pointers.

Todo:

Not IPv6-capable.

Member Function Documentation

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

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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

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

• /home/travis/build/urho3d/Urho3D/Source/Urho3D/Network/Connection.h
• /home/travis/build/urho3d/Urho3D/Source/Urho3D/Network/Connection.cpp