Connection class for udp endpoints. More...

#include <UdpConnection.h>

Public Member Functions
	UdpConnection (ConnectionId connectionId, const IpAddress &remoteAddress, UdpNetworkInterface &networkInterface, ConnectionRole connectionRole)

DtlsEndpoint::ConnectResult	ProcessHandshakeData (const UdpPacketEncodingBuffer &dtlsData)

void	UpdateHeartbeat (AZ::TimeMs currentTimeMs)

DtlsEndpoint &	GetDtlsEndpoint ()

const UdpPacketTracker &	GetPacketTracker () const

UdpPacketTracker &	GetPacketTracker ()

uint32_t	GetReliableQueueSize () const

void	ProcessAcked (PacketId packetId, AZ::TimeMs currentTimeMs)

void	SetTimeoutId (TimeoutId timeoutId)

TimeoutId	GetTimeoutId () const


bool	SendReliablePacket (const IPacket &packet) override
	IConnection interface.

PacketId	SendUnreliablePacket (const IPacket &packet) override

bool	WasPacketAcked (PacketId packetId) const override

ConnectionState	GetConnectionState () const override

ConnectionRole	GetConnectionRole () const override

bool	Disconnect (DisconnectReason reason, TerminationEndpoint endpoint) override

void	SetConnectionMtu (uint32_t connectionMtu) override

uint32_t	GetConnectionMtu () const override

Public Member Functions inherited from AzNetworking::IConnection
	IConnection (ConnectionId connectionId, const IpAddress &address)

ConnectionId	GetConnectionId () const

void	SetUserData (void *userData)

void *	GetUserData () const

void	SetRemoteAddress (const IpAddress &address)

const IpAddress &	GetRemoteAddress () const

const ConnectionMetrics &	GetMetrics () const

ConnectionMetrics &	GetMetrics ()

const ConnectionQuality &	GetConnectionQuality () const

ConnectionQuality &	GetConnectionQuality ()

Protected Member Functions
bool	PrepareReliablePacketForSend (PacketId packetId, SequenceId reliableSequenceId, const IPacket &packet)

void	ProcessSent (PacketId packetId, const IPacket &packet, uint32_t packetSize, ReliabilityType reliability)

PacketTimeoutResult	ProcessTimeout (PacketId packetId, ReliabilityType reliability)

bool	ProcessReceived (UdpPacketHeader &header, const NetworkOutputSerializer &serializer, uint32_t packetSize, AZ::TimeMs currentTimeMs)

PacketDispatchResult	HandleCorePacket (IConnectionListener &listener, UdpPacketHeader &header, ISerializer &serializer)

	AZ_DISABLE_COPY_MOVE (UdpConnection)

Protected Attributes
UdpNetworkInterface &	m_networkInterface

UdpPacketTracker	m_packetTracker

UdpReliableQueue	m_reliableQueue

UdpFragmentQueue	m_fragmentQueue

ConnectionState	m_state = ConnectionState::Disconnected

ConnectionRole	m_connectionRole = ConnectionRole::Connector

DtlsEndpoint	m_dtlsEndpoint

AZ::TimeMs	m_lastSentPacketMs

uint32_t	m_unackedPacketCount = 0

uint32_t	m_connectionMtu = MaxUdpTransmissionUnit

TimeoutId	m_timeoutId

uint32_t	m_timeoutCounter = 0

Friends
class	UdpFragmentQueue

class	UdpNetworkInterface

Detailed Description

Connection class for udp endpoints.

Constructor & Destructor Documentation

AzNetworking::UdpConnection::UdpConnection	(	ConnectionId	connectionId,
		const IpAddress &	remoteAddress,
		UdpNetworkInterface &	networkInterface,
		ConnectionRole	connectionRole
	)

Constructor

Parameters

connectionId	the connection identifier to use for this connection
remoteAddress	the remote address this connection
networkInterface	reference of the network interface that owns this connection instance
connectionRole	whether this connection was the connector or acceptor

Member Function Documentation

bool AzNetworking::UdpConnection::Disconnect	(	DisconnectReason	reason,
		TerminationEndpoint	endpoint
	)

overridevirtual

Disconnects the connection with the provided termination reason

Parameters

reason	reason for the disconnect
endpoint	which endpoint initiated the disconnect, local or remote

Returns: boolean true on success

Implements AzNetworking::IConnection.

uint32_t AzNetworking::UdpConnection::GetConnectionMtu ( ) const

overridevirtual

Returns the connection maximum transmission unit. Currently unsupported on TcpConnections

Returns: the max transmission unit for this connection

Implements AzNetworking::IConnection.

ConnectionRole AzNetworking::UdpConnection::GetConnectionRole ( ) const

overridevirtual

Retrieves the connection role of this connection instance, whether it was initiated or accepted.

Returns: whether this connection was initiated or accepted

Implements AzNetworking::IConnection.

ConnectionState AzNetworking::UdpConnection::GetConnectionState ( ) const

overridevirtual

Retrieves the connection state for this IConnection instance.

Returns: the current connection state for this IConnection instance

Implements AzNetworking::IConnection.

DtlsEndpoint & AzNetworking::UdpConnection::GetDtlsEndpoint ( )

inline

Returns a suitable encryption endpoint for this connection type.

Returns: reference to the connections encryption endpoint

const UdpPacketTracker & AzNetworking::UdpConnection::GetPacketTracker ( ) const

inline

Retrieves packet delivery tracker instance for the specified connection.

Returns: reference to the requested packet tracker instance

UdpPacketTracker & AzNetworking::UdpConnection::GetPacketTracker ( )

inline

Retrieves packet delivery tracker instance for the specified connection.

Returns: reference to the requested packet tracker instance

uint32_t AzNetworking::UdpConnection::GetReliableQueueSize ( ) const

inline

Returns the number of unacked reliable messages still pending in the reliable queue.

Returns: the number of unacked reliable messages still pending in the reliable queue

TimeoutId AzNetworking::UdpConnection::GetTimeoutId ( ) const

inline

Retrieves the timeout identifier for this connection instance.

Returns: the timeout identifier for this connection instance

PacketDispatchResult AzNetworking::UdpConnection::HandleCorePacket	(	IConnectionListener &	listener,
		UdpPacketHeader &	header,
		ISerializer &	serializer
	)

protected

Handle a core network packet.

Parameters

listener	a connection listener to receive connection related events
header	the packet header received to process
serializer	the output serializer containing the transmitted packet data

Returns: PacketDispatchResult result of processing the core packet

bool AzNetworking::UdpConnection::PrepareReliablePacketForSend	(	PacketId	packetId,
		SequenceId	reliableSequenceId,
		const IPacket &	packet
	)

inlineprotected

Prepare a reliable packet for transmission.

Parameters

packetId	identifier of the packet being sent
packet	reference to the packet being transmitted

Returns: boolean true on success, false on failure

void AzNetworking::UdpConnection::ProcessAcked	(	PacketId	packetId,
		AZ::TimeMs	currentTimeMs
	)

Acks a packetId.

Parameters

packetId	the PacketId of the packet being acked
currentTimeMs	current wall clock time in milliseconds

DtlsEndpoint::ConnectResult AzNetworking::UdpConnection::ProcessHandshakeData ( const UdpPacketEncodingBuffer & dtlsData )

Helper to exchange dtls handshake data during connection handshake

Parameters

dtlsData data buffer containing dtls handshake packet

Returns: the current result code for the dtls handshake operation, failed, pending, or complete

bool AzNetworking::UdpConnection::ProcessReceived	(	UdpPacketHeader &	header,
		const NetworkOutputSerializer &	serializer,
		uint32_t	packetSize,
		AZ::TimeMs	currentTimeMs
	)

protected

Process a received packet header.

Parameters

header	the packet header received to process
serializer	the output serializer containing the transmitted packet data
packetSize	the size of the received packet in bytes
currentTimeMs	current wall clock time in milliseconds

Returns: boolean true on successful handling of the received header

void AzNetworking::UdpConnection::ProcessSent	(	PacketId	packetId,
		const IPacket &	packet,
		uint32_t	packetSize,
		ReliabilityType	reliability
	)

protected

Process a packet for sending.

Parameters

packetId	identifier of the packet being sent
packet	reference to the packet being transmitted
packetSize	packet size in bytes
reliability	whether or not to guarantee delivery

PacketTimeoutResult AzNetworking::UdpConnection::ProcessTimeout	(	PacketId	packetId,
		ReliabilityType	reliability
	)

protected

Process a timed out packet header.

Parameters

packetId	identifier of the packet that timed out
reliability	whether or not the packet that timed out was marked reliable

Returns: PacketTimeoutResult::Acked if the packet was confirmed to be received prior to timeout, PacketTimeoutResult::Lost if not

PacketId AzNetworking::UdpConnection::SendUnreliablePacket ( const IPacket & packet )

overridevirtual

A helper function that transmits a packet on this connection unreliably.

Parameters

packet packet to transmit

Returns: the unreliable packet identifier of the transmitted packet

Implements AzNetworking::IConnection.

void AzNetworking::UdpConnection::SetConnectionMtu ( uint32_t connectionMtu )

overridevirtual

Sets connection maximum transmission unit for this connection. Currently unsupported on TcpConnections

Parameters

connectionMtu the max transmission unit for this connection

Implements AzNetworking::IConnection.

void AzNetworking::UdpConnection::SetTimeoutId ( TimeoutId timeoutId )

inline

Sets the timeout identifier for this connection instance.

Parameters

timeoutId the timeoutId to use for this connection instance

void AzNetworking::UdpConnection::UpdateHeartbeat ( AZ::TimeMs currentTimeMs )

Updates the connection heartbeat if active.

Parameters

currentTimeMs current wall clock time in milliseconds

bool AzNetworking::UdpConnection::WasPacketAcked ( PacketId packetId ) const

overridevirtual

Returns true if the given packet id was confirmed acknowledged by the remote endpoint, false otherwise.

Parameters

packetId the packet id of the packet to confirm acknowledgment of

Returns: boolean true if the packet is confirmed acknowledged, false if the packet number is out of range, lost, or still pending acknowledgment

Implements AzNetworking::IConnection.

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

Code/Framework/AzNetworking/AzNetworking/UdpTransport/UdpConnection.h
Code/Framework/AzNetworking/AzNetworking/UdpTransport/UdpConnection.inl

Public Member Functions

Protected Member Functions

Protected Attributes

Friends

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation