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Ilya Moiseenko8196d2e2011-08-29 13:03:22 -07001/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
2/*
3 * Copyright (c) 2011 University of California, Los Angeles
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation;
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 *
18 * Author: Ilya Moiseenko <iliamo@cs.ucla.edu>
19 */
20
Alexander Afanasyev4aac5572012-08-09 10:49:55 -070021#include "ndn-consumer.h"
Alexander Afanasyevc5a23e22011-09-07 00:37:36 -070022#include "ns3/ptr.h"
Alexander Afanasyev19426ef2011-11-23 20:55:28 -080023#include "ns3/log.h"
24#include "ns3/simulator.h"
25#include "ns3/packet.h"
Alexander Afanasyevc5a23e22011-09-07 00:37:36 -070026#include "ns3/callback.h"
Alexander Afanasyeva46844b2011-11-21 19:13:26 -080027#include "ns3/string.h"
Alexander Afanasyev19426ef2011-11-23 20:55:28 -080028#include "ns3/boolean.h"
29#include "ns3/uinteger.h"
Alexander Afanasyevb3e4b852011-12-23 15:58:20 -080030#include "ns3/double.h"
Alexander Afanasyev19426ef2011-11-23 20:55:28 -080031
Alexander Afanasyev4aac5572012-08-09 10:49:55 -070032#include "ns3/ndn-app-face.h"
33#include "ns3/ndn-interest-header.h"
34#include "ns3/ndn-content-object-header.h"
Alexander Afanasyevde7601a2012-05-31 12:14:54 -070035// #include "ns3/weights-path-stretch-tag.h"
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -070036
Alexander Afanasyev19426ef2011-11-23 20:55:28 -080037#include <boost/ref.hpp>
Alexander Afanasyev781ea812011-12-15 22:42:09 -080038#include <boost/lexical_cast.hpp>
39#include <boost/lambda/lambda.hpp>
40#include <boost/lambda/bind.hpp>
41
Alexander Afanasyev3661e232012-01-20 17:36:15 -080042#include "ns3/names.h"
43
Alexander Afanasyev781ea812011-12-15 22:42:09 -080044namespace ll = boost::lambda;
Alexander Afanasyev19426ef2011-11-23 20:55:28 -080045
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -070046NS_LOG_COMPONENT_DEFINE ("ndn.Consumer");
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -070047
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -070048namespace ns3 {
49namespace ndn {
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -070050
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -070051NS_OBJECT_ENSURE_REGISTERED (Consumer);
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -070052
53TypeId
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -070054Consumer::GetTypeId (void)
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -070055{
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -070056 static TypeId tid = TypeId ("ns3::ndn::Consumer")
Alexander Afanasyev4aac5572012-08-09 10:49:55 -070057 .SetGroupName ("Ndn")
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -070058 .SetParent<App> ()
Alexander Afanasyev781ea812011-12-15 22:42:09 -080059 .AddAttribute ("StartSeq", "Initial sequence number",
Alexander Afanasyevb3e4b852011-12-23 15:58:20 -080060 IntegerValue (0),
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -070061 MakeIntegerAccessor(&Consumer::m_seq),
Alexander Afanasyev781ea812011-12-15 22:42:09 -080062 MakeIntegerChecker<int32_t>())
Alexander Afanasyev011b8592011-12-21 14:45:27 -080063
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -070064 .AddAttribute ("Prefix","Name of the Interest",
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -080065 StringValue ("/"),
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -070066 MakeNameComponentsAccessor (&Consumer::m_interestName),
67 MakeNameComponentsChecker ())
Ilya Moiseenko956d0542012-01-02 15:26:40 -080068 .AddAttribute ("LifeTime", "LifeTime for interest packet",
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -080069 StringValue ("2s"),
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -070070 MakeTimeAccessor (&Consumer::m_interestLifeTime),
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -080071 MakeTimeChecker ())
72 .AddAttribute ("MinSuffixComponents", "MinSuffixComponents",
73 IntegerValue(-1),
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -070074 MakeIntegerAccessor(&Consumer::m_minSuffixComponents),
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -080075 MakeIntegerChecker<int32_t>())
76 .AddAttribute ("MaxSuffixComponents", "MaxSuffixComponents",
77 IntegerValue(-1),
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -070078 MakeIntegerAccessor(&Consumer::m_maxSuffixComponents),
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -080079 MakeIntegerChecker<int32_t>())
80 .AddAttribute ("ChildSelector", "ChildSelector",
81 BooleanValue(false),
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -070082 MakeBooleanAccessor(&Consumer::m_childSelector),
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -080083 MakeBooleanChecker())
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -070084 .AddAttribute ("Exclude", "only simple name matching is supported (use NameComponents)",
85 NameComponentsValue (),
86 MakeNameComponentsAccessor (&Consumer::m_exclude),
87 MakeNameComponentsChecker ())
Alexander Afanasyev781ea812011-12-15 22:42:09 -080088
Alexander Afanasyev781ea812011-12-15 22:42:09 -080089 .AddAttribute ("RetxTimer",
90 "Timeout defining how frequent retransmission timeouts should be checked",
Alexander Afanasyev3d0c2e02012-01-22 18:50:05 -080091 StringValue ("50ms"),
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -070092 MakeTimeAccessor (&Consumer::GetRetxTimer, &Consumer::SetRetxTimer),
Alexander Afanasyev781ea812011-12-15 22:42:09 -080093 MakeTimeChecker ())
94
Alexander Afanasyev6bff0df2012-01-19 17:51:52 -080095 .AddTraceSource ("PathWeightsTrace", "PathWeightsTrace",
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -070096 MakeTraceSourceAccessor (&Consumer::m_pathWeightsTrace))
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -080097 ;
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -070098
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -080099 return tid;
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700100}
101
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700102Consumer::Consumer ()
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800103 : m_rand (0, std::numeric_limits<uint32_t>::max ())
104 , m_seq (0)
Alexander Afanasyevb7ad2322012-01-17 22:54:49 -0800105 , m_seqMax (0) // don't request anything
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700106{
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800107 NS_LOG_FUNCTION_NOARGS ();
Alexander Afanasyev011b8592011-12-21 14:45:27 -0800108
Alexander Afanasyev94cebd02012-01-16 12:22:34 -0800109 m_rtt = CreateObject<RttMeanDeviation> ();
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700110}
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800111
112void
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700113Consumer::SetRetxTimer (Time retxTimer)
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800114{
115 m_retxTimer = retxTimer;
116 if (m_retxEvent.IsRunning ())
117 m_retxEvent.Cancel (); // cancel any scheduled cleanup events
118
119 // schedule even with new timeout
120 m_retxEvent = Simulator::Schedule (m_retxTimer,
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700121 &Consumer::CheckRetxTimeout, this);
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800122}
123
124Time
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700125Consumer::GetRetxTimer () const
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800126{
127 return m_retxTimer;
128}
129
130void
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700131Consumer::CheckRetxTimeout ()
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800132{
133 Time now = Simulator::Now ();
134
Alexander Afanasyev359bfb72012-01-09 18:42:50 -0800135 Time rto = m_rtt->RetransmitTimeout ();
Alexander Afanasyevbdc0d982011-12-16 01:15:26 -0800136
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800137 while (!m_seqTimeouts.empty ())
138 {
139 SeqTimeoutsContainer::index<i_timestamp>::type::iterator entry =
140 m_seqTimeouts.get<i_timestamp> ().begin ();
Alexander Afanasyev359bfb72012-01-09 18:42:50 -0800141 if (entry->time + rto <= now) // timeout expired?
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800142 {
Alexander Afanasyeve0e5bd12012-01-21 14:30:52 -0800143 uint32_t seqNo = entry->seq;
Alexander Afanasyev359bfb72012-01-09 18:42:50 -0800144 m_seqTimeouts.get<i_timestamp> ().erase (entry);
Alexander Afanasyeve0e5bd12012-01-21 14:30:52 -0800145 OnTimeout (seqNo);
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800146 }
147 else
148 break; // nothing else to do. All later packets need not be retransmitted
149 }
Alexander Afanasyev3183b5a2011-12-23 20:48:20 -0800150
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800151 m_retxEvent = Simulator::Schedule (m_retxTimer,
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700152 &Consumer::CheckRetxTimeout, this);
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800153}
154
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700155// Application Methods
156void
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700157Consumer::StartApplication () // Called at time specified by Start
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700158{
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800159 NS_LOG_FUNCTION_NOARGS ();
Alexander Afanasyevc5a23e22011-09-07 00:37:36 -0700160
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800161 // do base stuff
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700162 App::StartApplication ();
Alexander Afanasyev011b8592011-12-21 14:45:27 -0800163
164 ScheduleNextPacket ();
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700165}
166
167void
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700168Consumer::StopApplication () // Called at time specified by Stop
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700169{
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800170 NS_LOG_FUNCTION_NOARGS ();
Alexander Afanasyevc5a23e22011-09-07 00:37:36 -0700171
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800172 // cancel periodic packet generation
173 Simulator::Cancel (m_sendEvent);
Alexander Afanasyevc5a23e22011-09-07 00:37:36 -0700174
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800175 // cleanup base stuff
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700176 App::StopApplication ();
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700177}
178
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700179void
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700180Consumer::SendPacket ()
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700181{
Alexander Afanasyev3183b5a2011-12-23 20:48:20 -0800182 if (!m_active) return;
183
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800184 NS_LOG_FUNCTION_NOARGS ();
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800185
Alexander Afanasyev1ec705f2012-01-23 12:35:10 -0800186 uint32_t seq=std::numeric_limits<uint32_t>::max (); //invalid
187
Alexander Afanasyev1180b042012-01-25 19:26:13 -0800188 // std::cout << Simulator::Now ().ToDouble (Time::S) << "s max -> " << m_seqMax << "\n";
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800189
Alexander Afanasyev1ec705f2012-01-23 12:35:10 -0800190 while (m_retxSeqs.size ())
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800191 {
192 seq = *m_retxSeqs.begin ();
193 m_retxSeqs.erase (m_retxSeqs.begin ());
Alexander Afanasyev1ec705f2012-01-23 12:35:10 -0800194
195 // NS_ASSERT (m_seqLifetimes.find (seq) != m_seqLifetimes.end ());
196 // if (m_seqLifetimes.find (seq)->time <= Simulator::Now ())
197 // {
198
199 // NS_LOG_DEBUG ("Expire " << seq);
200 // m_seqLifetimes.erase (seq); // lifetime expired. Trying to find another unexpired sequence number
201 // continue;
202 // }
203 break;
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800204 }
Alexander Afanasyev1ec705f2012-01-23 12:35:10 -0800205
206 if (seq == std::numeric_limits<uint32_t>::max ())
Alexander Afanasyevb3e4b852011-12-23 15:58:20 -0800207 {
Alexander Afanasyev812f7ab2012-01-24 11:08:04 -0800208 if (m_seqMax != std::numeric_limits<uint32_t>::max ())
Alexander Afanasyevb3e4b852011-12-23 15:58:20 -0800209 {
210 if (m_seq >= m_seqMax)
211 {
Alexander Afanasyev3183b5a2011-12-23 20:48:20 -0800212 return; // we are totally done
Alexander Afanasyevb3e4b852011-12-23 15:58:20 -0800213 }
214 }
215
216 seq = m_seq++;
217 }
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800218
Alexander Afanasyev359bfb72012-01-09 18:42:50 -0800219 // std::cout << Simulator::Now ().ToDouble (Time::S) << "s -> " << seq << "\n";
Ilya Moiseenko0605d262011-10-28 13:00:07 -0700220
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800221 //
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700222 Ptr<NameComponents> nameWithSequence = Create<NameComponents> (m_interestName);
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800223 (*nameWithSequence) (seq);
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800224 //
225
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700226 InterestHeader interestHeader;
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800227 interestHeader.SetNonce (m_rand.GetValue ());
228 interestHeader.SetName (nameWithSequence);
229 interestHeader.SetInterestLifetime (m_interestLifeTime);
230 interestHeader.SetChildSelector (m_childSelector);
Alexander Afanasyevc39f0b42011-11-28 12:51:12 -0800231 if (m_exclude.size ()>0)
232 {
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700233 interestHeader.SetExclude (Create<NameComponents> (m_exclude));
Alexander Afanasyevc39f0b42011-11-28 12:51:12 -0800234 }
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800235 interestHeader.SetMaxSuffixComponents (m_maxSuffixComponents);
236 interestHeader.SetMinSuffixComponents (m_minSuffixComponents);
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700237
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800238 // NS_LOG_INFO ("Requesting Interest: \n" << interestHeader);
239 NS_LOG_INFO ("> Interest for " << seq);
Alexander Afanasyevc5a23e22011-09-07 00:37:36 -0700240
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800241 Ptr<Packet> packet = Create<Packet> ();
242 packet->AddHeader (interestHeader);
Alexander Afanasyev59e67712012-02-07 11:49:34 -0800243 NS_LOG_DEBUG ("Interest packet size: " << packet->GetSize ());
Alexander Afanasyevd02a5d62011-11-21 11:01:51 -0800244
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800245 m_protocolHandler (packet);
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800246
Alexander Afanasyevbdc0d982011-12-16 01:15:26 -0800247 NS_LOG_DEBUG ("Trying to add " << seq << " with " << Simulator::Now () << ". already " << m_seqTimeouts.size () << " items");
248
Alexander Afanasyev359bfb72012-01-09 18:42:50 -0800249 m_seqTimeouts.insert (SeqTimeout (seq, Simulator::Now ()));
Alexander Afanasyev1ec705f2012-01-23 12:35:10 -0800250 m_seqLifetimes.insert (SeqTimeout (seq, Simulator::Now () + m_interestLifeTime)); // only one insert will work. if entry exists, nothing will happen... nothing should happen
Alexander Afanasyevbdc0d982011-12-16 01:15:26 -0800251 m_transmittedInterests (&interestHeader, this, m_face);
Alexander Afanasyev011b8592011-12-21 14:45:27 -0800252
Alexander Afanasyev359bfb72012-01-09 18:42:50 -0800253 m_rtt->SentSeq (SequenceNumber32 (seq), 1);
Alexander Afanasyev011b8592011-12-21 14:45:27 -0800254 ScheduleNextPacket ();
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700255}
Alexander Afanasyevc5a23e22011-09-07 00:37:36 -0700256
Alexander Afanasyev011b8592011-12-21 14:45:27 -0800257///////////////////////////////////////////////////
258// Process incoming packets //
259///////////////////////////////////////////////////
260
261
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700262void
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700263Consumer::OnContentObject (const Ptr<const ContentObjectHeader> &contentObject,
Alexander Afanasyeve9c9d722012-01-19 16:59:30 -0800264 Ptr<Packet> payload)
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700265{
Alexander Afanasyev3183b5a2011-12-23 20:48:20 -0800266 if (!m_active) return;
267
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700268 App::OnContentObject (contentObject, payload); // tracing inside
Alexander Afanasyevbdc0d982011-12-16 01:15:26 -0800269
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800270 NS_LOG_FUNCTION (this << contentObject << payload);
271
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800272 // NS_LOG_INFO ("Received content object: " << boost::cref(*contentObject));
273
274 uint32_t seq = boost::lexical_cast<uint32_t> (contentObject->GetName ().GetComponents ().back ());
275 NS_LOG_INFO ("< DATA for " << seq);
276
Alexander Afanasyev8dcfa5d2012-01-05 14:22:25 -0700277 // SeqTimeoutsContainer::iterator entry = m_seqTimeouts.find (seq);
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800278
Alexander Afanasyev8f5a9bb2011-12-18 19:49:02 -0800279 // NS_ASSERT_MSG (entry != m_seqTimeouts.end (),
280 // "Comment out this assert, if it causes problems");
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800281
Alexander Afanasyev36d5c2a2012-01-02 19:09:19 -0800282 // if (entry != m_seqTimeouts.end ())
283 // m_seqTimeouts.erase (entry);
284
Alexander Afanasyev1ec705f2012-01-23 12:35:10 -0800285 m_seqLifetimes.erase (seq);
Alexander Afanasyev36d5c2a2012-01-02 19:09:19 -0800286 m_seqTimeouts.erase (seq);
287 m_retxSeqs.erase (seq);
Alexander Afanasyev359bfb72012-01-09 18:42:50 -0800288
289 m_rtt->AckSeq (SequenceNumber32 (seq));
Alexander Afanasyev6bff0df2012-01-19 17:51:52 -0800290
Alexander Afanasyevde7601a2012-05-31 12:14:54 -0700291 // Ptr<const WeightsPathStretchTag> tag = payload->RemovePacketTag<WeightsPathStretchTag> ();
292 // if (tag != 0)
293 // {
294 // // Notify trace about path weights vector (e.g., for path-stretch calculation)
295 // m_pathWeightsTrace (GetNode (), tag->GetSourceNode (), seq, tag->GetTotalWeight ());
296 // // if (Names::FindName (GetNode ()) == "36")// || Names::FindName (GetNode ()) == "40"|| Names::FindName (GetNode ()) == "5")
297 // // std::cout << Simulator::Now () << "\t" << boost::cref(*tag) << " = " << tag->GetTotalWeight () << "\n";
298 // }
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800299}
300
301void
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700302Consumer::OnNack (const Ptr<const InterestHeader> &interest, Ptr<Packet> origPacket)
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800303{
Alexander Afanasyev3183b5a2011-12-23 20:48:20 -0800304 if (!m_active) return;
305
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700306 App::OnNack (interest, origPacket); // tracing inside
Alexander Afanasyevbdc0d982011-12-16 01:15:26 -0800307
Alexander Afanasyev120bf312011-12-19 01:24:47 -0800308 NS_LOG_DEBUG ("Nack type: " << interest->GetNack ());
Alexander Afanasyev120bf312011-12-19 01:24:47 -0800309
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800310 NS_LOG_FUNCTION (this << interest);
311
312 // NS_LOG_INFO ("Received NACK: " << boost::cref(*interest));
313 uint32_t seq = boost::lexical_cast<uint32_t> (interest->GetName ().GetComponents ().back ());
314 NS_LOG_INFO ("< NACK for " << seq);
Alexander Afanasyev359bfb72012-01-09 18:42:50 -0800315 // std::cout << Simulator::Now ().ToDouble (Time::S) << "s -> " << "NACK for " << seq << "\n";
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800316
317 // put in the queue of interests to be retransmitted
Alexander Afanasyev120bf312011-12-19 01:24:47 -0800318 NS_LOG_INFO ("Before: " << m_retxSeqs.size ());
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800319 m_retxSeqs.insert (seq);
Alexander Afanasyev120bf312011-12-19 01:24:47 -0800320 NS_LOG_INFO ("After: " << m_retxSeqs.size ());
Alexander Afanasyev3183b5a2011-12-23 20:48:20 -0800321
Alexander Afanasyev92d5be12012-08-13 18:56:52 -0700322 m_rtt->IncreaseMultiplier (); // Double the next RTO ??
Alexander Afanasyev3183b5a2011-12-23 20:48:20 -0800323 ScheduleNextPacket ();
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700324}
Alexander Afanasyevc5a23e22011-09-07 00:37:36 -0700325
Alexander Afanasyev359bfb72012-01-09 18:42:50 -0800326void
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700327Consumer::OnTimeout (uint32_t sequenceNumber)
Alexander Afanasyev359bfb72012-01-09 18:42:50 -0800328{
Alexander Afanasyev92d5be12012-08-13 18:56:52 -0700329 NS_LOG_FUNCTION (sequenceNumber);
Alexander Afanasyev8e0d2812012-01-19 22:38:14 -0800330 // std::cout << Simulator::Now () << ", TO: " << sequenceNumber << ", current RTO: " << m_rtt->RetransmitTimeout ().ToDouble (Time::S) << "s\n";
Alexander Afanasyevb7ad2322012-01-17 22:54:49 -0800331
Alexander Afanasyev92d5be12012-08-13 18:56:52 -0700332 m_rtt->IncreaseMultiplier (); // Double the next RTO
Alexander Afanasyev8e0d2812012-01-19 22:38:14 -0800333 m_rtt->SentSeq (SequenceNumber32 (sequenceNumber), 1); // make sure to disable RTT calculation for this sample
Alexander Afanasyev4d66de52012-01-13 00:06:01 -0800334 m_retxSeqs.insert (sequenceNumber);
Alexander Afanasyev359bfb72012-01-09 18:42:50 -0800335 ScheduleNextPacket ();
336}
337
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700338} // namespace ndn
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800339} // namespace ns3