NS-3 based Named Data Networking (NDN) simulator
ndnSIM: NDN, CCN, CCNx, content centric networks
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ndn-header-helper.cc
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/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil -*- */
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/*
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* Copyright (c) 2011 University of California, Los Angeles
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation;
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Author: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
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*/
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#include "ndn-header-helper.h"
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#include "ns3/log.h"
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#include "ns3/packet.h"
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#include "ns3/header.h"
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#include "ns3/object.h"
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#include "ns3/ndn-interest.h"
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#include "ns3/ndn-data.h"
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#include <iomanip>
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NS_LOG_COMPONENT_DEFINE (
"ndn.HeaderHelper"
);
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const
uint8_t INTEREST_CCNB_BYTES[] = {0x01, 0xD2};
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const
uint8_t CONTENT_OBJECT_CCNB_BYTES[] = {0x04, 0x82};
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const
uint8_t INTEREST_NDNSIM_BYTES[] = {0x80, 0x00};
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const
uint8_t CONTENT_OBJECT_NDNSIM_BYTES[] = {0x80, 0x01};
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namespace
ns3 {
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namespace
ndn {
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HeaderHelper::Type
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HeaderHelper::GetNdnHeaderType
(Ptr<const Packet> packet)
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{
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uint8_t type[2];
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uint32_t read=packet->CopyData (type,2);
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if
(read!=2)
throw
UnknownHeaderException
();
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NS_LOG_DEBUG (*packet);
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if
(type[0] == INTEREST_CCNB_BYTES[0] && type[1] == INTEREST_CCNB_BYTES[1])
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{
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return
HeaderHelper::INTEREST_CCNB;
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}
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else
if
(type[0] == CONTENT_OBJECT_CCNB_BYTES[0] && type[1] == CONTENT_OBJECT_CCNB_BYTES[1])
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{
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return
HeaderHelper::CONTENT_OBJECT_CCNB;
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}
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else
if
(type[0] == INTEREST_NDNSIM_BYTES[0] && type[1] == INTEREST_NDNSIM_BYTES[1])
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{
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return
HeaderHelper::INTEREST_NDNSIM;
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}
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else
if
(type[0] == CONTENT_OBJECT_NDNSIM_BYTES[0] && type[1] == CONTENT_OBJECT_NDNSIM_BYTES[1])
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{
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return
HeaderHelper::CONTENT_OBJECT_NDNSIM;
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}
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NS_LOG_DEBUG (*packet);
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throw
UnknownHeaderException
();
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}
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}
// namespace ndn
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}
// namespace ns3
ns3::ndn::HeaderHelper::Type
Type
enum for Ndn packet types
Definition:
ndn-header-helper.h:54
ns3::ndn::HeaderHelper::GetNdnHeaderType
static Type GetNdnHeaderType(Ptr< const Packet > packet)
Packet ::= Version PacketType (Interest | Data)
Definition:
ndn-header-helper.cc:44
ns3::ndn::UnknownHeaderException
Exception thrown if NDN stack receives unrecognized message type.
Definition:
ndn-header-helper.h:99
ndnSIM
helper
ndn-header-helper.cc
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