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> Unreal Engine API Reference > Runtime > Engine > Net > FNetPacketNotify

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FNetPacketNotify

[FNetPacketNotify](API\Runtime\Engine\Net\FNetPacketNotify) - Drives delivery of sequence numbers, acknowledgments and notifications of delivery sequence numbers

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MacOS

Linux

References

Module	Engine
Header	/Engine/Source/Runtime/Engine/Public/Net/NetPacketNotify.h
Include	#include "Net/NetPacketNotify.h"

Syntax

class FNetPacketNotify

Remarks

FNetPacketNotify - Drives delivery of sequence numbers, acknowledgments and notifications of delivery sequence numbers

Constructors

	Name	Description
	FNetPacketNotify()	Constructor

Functions

	Name	Description
void	AckSeq ( SequenceNumberT Seq )	Mark Seq as received and update current InSeq, missing sequence numbers will be marked as lost
bool	CanSend()	If we do have more unacknowledged sequence numbers in-flight than our maximum sendwindow we should not send more as the receiving end will not be able to detect if the sequence number has wrapped around
SequenceNumb...	CommitAndIncrementOutSeq()	Increment outgoing seq number and commit data
SIZE_T	GetCurrentSequenceHistoryLength()	Get the current sequenceHistory length in bits
SequenceNumb...	GetInAckSeq()	Get the last received sequence number that we have accepted, InAckSeq cannot be larger than InSeq
SequenceNumb...	GetInSeq()	Get the last received in sequence number
const Sequen...	GetInSeqHistory()	Get the current SequenceHistory
SequenceNumb...	GetOutAckSeq()	Get the last outgoing sequence number acknowledged by remote
SequenceNumb...	GetOutSeq()	Get the current outgoing sequence number
SequenceNumb...	GetSequenceDelta ( const FNotificationHeader& Notific... )	Gets the delta between the present sequence, and the sequence inside the specified header - if the delta is positive
void	Init ( SequenceNumberT InitialInSeq, SequenceNumberT InitialOutSeq )	Init notification with expected initial sequence numbers
void	NakSeq ( SequenceNumberT Seq )	Explicitly mark Seq as not received and update current InSeq, additional missing sequence numbers will be marked as lost
bool	ReadHeader ( FNotificationHeader& Data, FBitReader& Reader )	Read header from stream
SequenceNumb...	Update ( const FNotificationHeader& Notific..., Functor&& InFunc )	Update state of PacketNotification based on received header and invoke packet notifications for received acks.
bool	WriteHeader ( FBitWriter& Writer, bool bRefresh )	Write NotificationHeader, and update outgoing ack record if bRefresh is true we will attempt to refresh a previously written header if the resulting size will be the same as the already written header.

Classes

	Name	Description
	FNotificationHeader

Typedefs

Name	Description
AckRecordT
SequenceHistoryT
SequenceNumberT

Constants

Name	Description
MaxSequenceHistoryLength
SequenceNumberBits

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