nfd::face::LpReassembler Class Reference

reassembles fragmented network-layer packets More...

#include <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)
void	setOptions (const Options &options)
	set options for reassembler More...
const LinkService *	getLinkService () const
std::tuple< bool, Block, lp::Packet >	receiveFragment (EndpointId remoteEndpoint, const lp::Packet &packet)
	adds received fragment to the buffer More...
size_t	size () const
	count of partial packets More...

Public Attributes
signal::Signal< LpReassembler, EndpointId, size_t >	beforeTimeout
	signals 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 39 of file lp-reassembler.hpp.

Constructor & Destructor Documentation

LpReassembler()

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

explicit

Definition at line 37 of file lp-reassembler.cpp.

Member Function Documentation

setOptions()

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

inline

set options for reassembler

Definition at line 132 of file lp-reassembler.hpp.

Referenced by nfd::face::GenericLinkService::setOptions().

getLinkService()

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

inline

Returns

LinkService that owns this instance

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

Definition at line 138 of file lp-reassembler.hpp.

Referenced by nfd::face::operator<<().

receiveFragment()

std::tuple< bool, Block, lp::Packet > nfd::face::LpReassembler::receiveFragment	(	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 44 of file lp-reassembler.cpp.

References ndn::lp::Packet::get(), nfd::getScheduler(), ndn::lp::Packet::has(), nonstd::optional_lite::std11::move(), NFD_LOG_FACE_TRACE, NFD_LOG_FACE_WARN, nfd::face::LpReassembler::Options::nMaxFragments, and nfd::face::LpReassembler::Options::reassemblyTimeout.

size()

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

inline

count of partial packets

Definition at line 144 of file lp-reassembler.hpp.

Member Data Documentation

beforeTimeout

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

signals before a partial packet is dropped due to timeout

If a partial packet is incomplete and no new fragment is received within Options::reassemblyTimeout, it would be dropped due to timeout. Before it's erased, this signal is emitted with the remote endpoint, and the number of fragments being dropped.

Definition at line 96 of file lp-reassembler.hpp.

Referenced by nfd::face::GenericLinkService::GenericLinkService().

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

• ndnSIM/NFD/daemon/face/lp-reassembler.hpp
• ndnSIM/NFD/daemon/face/lp-reassembler.cpp