nfd::face::LpReliability Class Reference

Provides for reliable sending and receiving of link-layer packets. More...

#include <daemon/face/lp-reliability.hpp>

Inheritance diagram for nfd::face::LpReliability:

Collaboration diagram for nfd::face::LpReliability:

Classes
struct	Options

Public Member Functions
	LpReliability (const Options &options, GenericLinkService *linkService)
const GenericLinkService *	getLinkService () const
void	handleOutgoing (std::vector< lp::Packet > &frags, lp::Packet &&pkt, bool isInterest)
	Observe outgoing fragment(s) of a network packet and store for potential retransmission. More...
void	piggyback (lp::Packet &pkt, ssize_t mtu)
	Called by GenericLinkService to attach Acks onto an outgoing LpPacket. More...
bool	processIncomingPacket (const lp::Packet &pkt)
	Extract and parse all Acks and add Ack for contained Fragment (if any) to AckQueue. More...
void	setOptions (const Options &options)
	Set options for reliability. More...

Public Attributes
signal::Signal< LpReliability, Interest >	onDroppedInterest
	Signals on Interest dropped by reliability system for exceeding allowed number of retx. More...

Static Public Attributes
static constexpr size_t	RESERVED_HEADER_SPACE
	TxSequence TLV-TYPE (3 octets) + TLV-LENGTH (1 octet) + lp::Sequence (8 octets) More...

Detailed Description

Provides for reliable sending and receiving of link-layer packets.

See also

https://redmine.named-data.net/projects/nfd/wiki/NDNLPv2

Definition at line 45 of file lp-reliability.hpp.

Constructor & Destructor Documentation

LpReliability()

nfd::face::LpReliability::LpReliability	(	const Options &	options,
		GenericLinkService *	linkService
	)

Definition at line 35 of file lp-reliability.cpp.

Member Function Documentation

getLinkService()

const GenericLinkService * nfd::face::LpReliability::getLinkService

(

)

const

Returns

GenericLinkService that owns this instance

This is only used for logging, and may be nullptr.

Definition at line 58 of file lp-reliability.cpp.

handleOutgoing()

void nfd::face::LpReliability::handleOutgoing	(	std::vector< lp::Packet > &	frags,
		lp::Packet &&	pkt,
		bool	isInterest
	)

Observe outgoing fragment(s) of a network packet and store for potential retransmission.

Parameters

frags	fragments of network packet
pkt	encapsulated network packet
isInterest	whether the network packet is an Interest

Definition at line 64 of file lp-reliability.cpp.

piggyback()

void nfd::face::LpReliability::piggyback	(	lp::Packet &	pkt,
		ssize_t	mtu
	)

Called by GenericLinkService to attach Acks onto an outgoing LpPacket.

Parameters

pkt	outgoing LpPacket to attach Acks to
mtu	MTU of the transport

Definition at line 189 of file lp-reliability.cpp.

processIncomingPacket()

bool nfd::face::LpReliability::processIncomingPacket

(

const lp::Packet &

pkt

)

Extract and parse all Acks and add Ack for contained Fragment (if any) to AckQueue.

Parameters

pkt	incoming LpPacket

Returns

whether incoming LpPacket is new and not a duplicate

Definition at line 103 of file lp-reliability.cpp.

setOptions()

void nfd::face::LpReliability::setOptions

(

const Options &

options

)

Set options for reliability.

Definition at line 46 of file lp-reliability.cpp.

Member Data Documentation

onDroppedInterest

signal::Signal<LpReliability, Interest> nfd::face::LpReliability::onDroppedInterest

Signals on Interest dropped by reliability system for exceeding allowed number of retx.

Definition at line 77 of file lp-reliability.hpp.

RESERVED_HEADER_SPACE

constexpr size_t nfd::face::LpReliability::RESERVED_HEADER_SPACE

staticconstexpr

Initial value:

= tlv::sizeOfVarNumber(lp::tlv::TxSequence) +
                                                  tlv::sizeOfVarNumber(sizeof(lp::Sequence)) +
                                                  sizeof(lp::Sequence)

TxSequence TLV-TYPE (3 octets) + TLV-LENGTH (1 octet) + lp::Sequence (8 octets)

Definition at line 49 of file lp-reliability.hpp.