nfd::face::LpReassembler Class Reference

Reassembles fragmented network-layer packets. More...

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

Inheritance diagram for nfd::face::LpReassembler:

Collaboration diagram for nfd::face::LpReassembler:

Classes
struct	Options
	Options that control the behavior of LpReassembler. More...

Public Member Functions
	LpReassembler (const Options &options, const LinkService *linkService=nullptr)
const LinkService *	getLinkService () const noexcept
	Returns the LinkService that owns this instance. More...
std::tuple< bool, Block, lp::Packet >	receiveFragment (const EndpointId &remoteEndpoint, const lp::Packet &packet)
	Adds received fragment to the buffer. More...
void	setOptions (const Options &options)
	Set options for reassembler. More...
size_t	size () const noexcept
	Count of partial packets. More...

Public Attributes
signal::Signal< LpReassembler, EndpointId, size_t >	beforeTimeout
	Notifies before a partial packet is dropped due to timeout. More...

Detailed Description

Reassembles fragmented network-layer packets.

See also

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

Definition at line 43 of file lp-reassembler.hpp.

Constructor & Destructor Documentation

LpReassembler()

nfd::face::LpReassembler::LpReassembler ( const Options &  options, const LinkService *  linkService = nullptr  )

explicit

Definition at line 38 of file lp-reassembler.cpp.

Member Function Documentation

getLinkService()

const LinkService* nfd::face::LpReassembler::getLinkService ( ) const

inlinenoexcept

Returns the LinkService that owns this instance.

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

Definition at line 82 of file lp-reassembler.hpp.

receiveFragment()

std::tuple< bool, Block, lp::Packet > nfd::face::LpReassembler::receiveFragment	(	const EndpointId &	remoteEndpoint,
		const lp::Packet &	packet
	)

Adds received fragment to the buffer.

Parameters

remoteEndpoint	endpoint that sent the packet
packet	received fragment; must have Fragment field

Returns

a tuple containing: whether a network-layer packet has been completely received, the reassembled network-layer packet, the first fragment for inspecting other NDNLPv2 headers

Exceptions

tlv::Error

packet is malformed

Definition at line 45 of file lp-reassembler.cpp.

setOptions()

void nfd::face::LpReassembler::setOptions ( const Options &  options )

inline

Set options for reassembler.

Definition at line 71 of file lp-reassembler.hpp.

size()

size_t nfd::face::LpReassembler::size ( ) const

inlinenoexcept

Count of partial packets.

Definition at line 104 of file lp-reassembler.hpp.

Member Data Documentation

beforeTimeout

signal::Signal<LpReassembler, EndpointId, size_t> nfd::face::LpReassembler::beforeTimeout

Notifies before a partial packet is dropped due to timeout.

If a partial packet is incomplete and no new fragments are received within Options::reassemblyTimeout, the partial packet is dropped due to timeout. Before dropping the packet, this signal is emitted with the remote endpoint and the number of fragments being dropped.

Definition at line 117 of file lp-reassembler.hpp.