NS-3 based Named Data Networking (NDN) simulator
ndnSIM 2.5: NDN, CCN, CCNx, content centric networks
API Documentation
lp-reassembler.hpp
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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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#ifndef NFD_DAEMON_FACE_LP_REASSEMBLER_HPP
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#define NFD_DAEMON_FACE_LP_REASSEMBLER_HPP
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#include "
core/scheduler.hpp
"
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#include "
face-log.hpp
"
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#include "
transport.hpp
"
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#include <ndn-cxx/lp/packet.hpp>
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namespace
nfd
{
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namespace
face
{
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class
LinkService
;
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class
LpReassembler
: noncopyable
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{
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public
:
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class
Options
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{
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public
:
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Options
();
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public
:
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size_t
nMaxFragments
;
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time::nanoseconds
reassemblyTimeout
;
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};
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explicit
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LpReassembler
(
const
Options
& options =
Options
(),
const
LinkService
* linkService =
nullptr
);
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void
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setOptions
(
const
Options
& options);
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const
LinkService
*
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getLinkService
()
const
;
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std::tuple<bool, Block, lp::Packet>
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receiveFragment
(
Transport::EndpointId
remoteEndpoint,
const
lp::Packet
& packet);
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size_t
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size
()
const
;
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signal::Signal<LpReassembler, Transport::EndpointId, size_t>
beforeTimeout
;
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private
:
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struct
PartialPacket
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{
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std::vector<lp::Packet> fragments;
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size_t
fragCount;
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size_t
nReceivedFragments;
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scheduler::ScopedEventId
dropTimer;
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};
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typedef
std::tuple<
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Transport::EndpointId
,
// remoteEndpoint
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lp::Sequence
// message identifier (sequence of the first fragment)
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> Key;
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Block
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doReassembly(
const
Key& key);
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void
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timeoutPartialPacket(
const
Key& key);
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private
:
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Options m_options;
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std::map<Key, PartialPacket> m_partialPackets;
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const
LinkService
* m_linkService;
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};
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std::ostream&
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operator<<(std::ostream& os, const FaceLogHelper<LpReassembler>& flh);
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inline
void
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LpReassembler::setOptions
(
const
Options
& options)
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{
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m_options = options;
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}
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inline
const
LinkService
*
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LpReassembler::getLinkService
()
const
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{
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return
m_linkService;
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}
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inline
size_t
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LpReassembler::size
()
const
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{
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return
m_partialPackets.size();
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}
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}
// namespace face
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}
// namespace nfd
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#endif // NFD_DAEMON_FACE_LP_REASSEMBLER_HPP
nfd::face::LpReassembler::beforeTimeout
signal::Signal< LpReassembler, Transport::EndpointId, size_t > beforeTimeout
signals before a partial packet is dropped due to timeout
Definition:
lp-reassembler.hpp:104
nfd::face::LinkService
the upper part of a Face
Definition:
link-service.hpp:77
nfd::face::LpReassembler::Options::nMaxFragments
size_t nMaxFragments
maximum number of fragments in a packet
Definition:
lp-reassembler.hpp:58
nfd::face::LinkService
LinkService
Definition:
link-service.cpp:32
face-log.hpp
nfd::face::LpReassembler::LpReassembler
LpReassembler(const Options &options=Options(), const LinkService *linkService=nullptr)
Definition:
lp-reassembler.cpp:41
ndn::Block
Represents a TLV element of NDN packet format.
Definition:
block.hpp:42
nfd::face::LpReassembler::Options::Options
Options()
Definition:
lp-reassembler.cpp:35
ndn::util::signal::Signal
provides a lightweight signal / event system
Definition:
signal.hpp:50
ndn::lp::Sequence
uint64_t Sequence
represents a sequence number
Definition:
sequence.hpp:35
nfd
Copyright (c) 2011-2015 Regents of the University of California.
Definition:
ndn-common.hpp:40
nfd::scheduler::ScopedEventId
Cancels an event automatically upon destruction.
Definition:
scheduler.hpp:60
face
nfd::face::LpReassembler
reassembles fragmented network-layer packets
Definition:
lp-reassembler.hpp:43
nfd::face::LpReassembler::setOptions
void setOptions(const Options &options)
set options for reassembler
Definition:
lp-reassembler.hpp:140
nfd::face::LpReassembler::Options
Options that control the behavior of LpReassembler.
Definition:
lp-reassembler.hpp:48
scheduler.hpp
transport.hpp
nfd::face::LpReassembler::Options::reassemblyTimeout
time::nanoseconds reassemblyTimeout
timeout before a partially reassembled packet is dropped
Definition:
lp-reassembler.hpp:62
nfd::face::LpReassembler::receiveFragment
std::tuple< bool, Block, lp::Packet > receiveFragment(Transport::EndpointId remoteEndpoint, const lp::Packet &packet)
adds received fragment to buffer
Definition:
lp-reassembler.cpp:48
nfd::face::LpReassembler::getLinkService
const LinkService * getLinkService() const
Definition:
lp-reassembler.hpp:146
nfd::face::Transport::EndpointId
uint64_t EndpointId
identifies an endpoint on the link
Definition:
transport.hpp:118
ndn::lp::Packet
Definition:
packet.hpp:30
nfd::face::LpReassembler::size
size_t size() const
count of partial packets
Definition:
lp-reassembler.hpp:152
ndnSIM
NFD
daemon
face
lp-reassembler.hpp
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