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
class	Options
	Options that control the behavior of LpReassembler. More...

Public Member Functions
	LpReassembler (const Options &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 (Transport::EndpointId remoteEndpoint, const lp::Packet &packet)
	adds received fragment to buffer More...
size_t	size () const
	count of partial packets More...

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

Detailed Description

reassembles fragmented network-layer packets

See also

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

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

Constructor & Destructor Documentation

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

explicit

Definition at line 41 of file lp-reassembler.cpp.

Member Function Documentation

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

inline

set options for reassembler

Definition at line 140 of file lp-reassembler.hpp.

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

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 146 of file lp-reassembler.hpp.

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

adds received fragment to buffer

Parameters

remoteEndpoint	endpoint whose sends the packet
packet	received fragment; must have Fragment field

Returns

whether network-layer packet has been completely received, the reassembled network-layer packet, and the first fragment for inspecting other NDNLPv2 headers

Exceptions

tlv::Error

packet is malformed

Definition at line 48 of file lp-reassembler.cpp.

References beforeTimeout, ndn::lp::Packet::get(), ndn::lp::Packet::has(), NFD_LOG_FACE_TRACE, NFD_LOG_FACE_WARN, nfd::face::LpReassembler::Options::nMaxFragments, nfd::face::LpReassembler::Options::reassemblyTimeout, and nfd::scheduler::schedule().

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

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

inline

count of partial packets

Definition at line 152 of file lp-reassembler.hpp.

Member Data Documentation

signal::Signal<LpReassembler, Transport::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 104 of file lp-reassembler.hpp.

Referenced by nfd::face::GenericLinkService::GenericLinkService(), and receiveFragment().

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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