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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"
Alexander Afanasyevbd9c18e2012-11-19 15:23:41 -080033#include "ns3/ndn-interest.h"
34#include "ns3/ndn-content-object.h"
Alexander Afanasyev1a0fff62013-01-19 14:29:51 -080035#include "ns3/ndnSIM/utils/ndn-fw-hop-count-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 {
Alexander Afanasyev3a3ce1a2013-01-31 11:26:11 -080050
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -070051NS_OBJECT_ENSURE_REGISTERED (Consumer);
Alexander Afanasyev3a3ce1a2013-01-31 11:26:11 -080052
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -070053TypeId
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 ())
Alexander Afanasyev781ea812011-12-15 22:42:09 -080072
Alexander Afanasyev781ea812011-12-15 22:42:09 -080073 .AddAttribute ("RetxTimer",
74 "Timeout defining how frequent retransmission timeouts should be checked",
Alexander Afanasyev3d0c2e02012-01-22 18:50:05 -080075 StringValue ("50ms"),
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -070076 MakeTimeAccessor (&Consumer::GetRetxTimer, &Consumer::SetRetxTimer),
Alexander Afanasyev781ea812011-12-15 22:42:09 -080077 MakeTimeChecker ())
78
Alexander Afanasyevedf24d92013-01-18 13:35:06 -080079 .AddTraceSource ("LastRetransmittedInterestDataDelay", "Delay between last retransmitted Interest and received Data",
80 MakeTraceSourceAccessor (&Consumer::m_lastRetransmittedInterestDataDelay))
81
82 .AddTraceSource ("FirstInterestDataDelay", "Delay between first transmitted Interest and received Data",
83 MakeTraceSourceAccessor (&Consumer::m_firstInterestDataDelay))
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -080084 ;
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -070085
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -080086 return tid;
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -070087}
Alexander Afanasyev3a3ce1a2013-01-31 11:26:11 -080088
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -070089Consumer::Consumer ()
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -080090 : m_rand (0, std::numeric_limits<uint32_t>::max ())
91 , m_seq (0)
Alexander Afanasyevb7ad2322012-01-17 22:54:49 -080092 , m_seqMax (0) // don't request anything
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -070093{
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -080094 NS_LOG_FUNCTION_NOARGS ();
Alexander Afanasyev011b8592011-12-21 14:45:27 -080095
Alexander Afanasyev94cebd02012-01-16 12:22:34 -080096 m_rtt = CreateObject<RttMeanDeviation> ();
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -070097}
Alexander Afanasyev781ea812011-12-15 22:42:09 -080098
99void
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700100Consumer::SetRetxTimer (Time retxTimer)
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800101{
102 m_retxTimer = retxTimer;
103 if (m_retxEvent.IsRunning ())
Alexander Afanasyevb18ae022012-09-03 21:46:36 -0700104 {
105 // m_retxEvent.Cancel (); // cancel any scheduled cleanup events
106 Simulator::Remove (m_retxEvent); // slower, but better for memory
107 }
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800108
109 // schedule even with new timeout
110 m_retxEvent = Simulator::Schedule (m_retxTimer,
Alexander Afanasyev3a3ce1a2013-01-31 11:26:11 -0800111 &Consumer::CheckRetxTimeout, this);
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800112}
113
114Time
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700115Consumer::GetRetxTimer () const
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800116{
117 return m_retxTimer;
118}
119
120void
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700121Consumer::CheckRetxTimeout ()
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800122{
123 Time now = Simulator::Now ();
124
Alexander Afanasyev359bfb72012-01-09 18:42:50 -0800125 Time rto = m_rtt->RetransmitTimeout ();
Alexander Afanasyev8a237522013-02-01 13:33:38 -0800126 // NS_LOG_DEBUG ("Current RTO: " << rto.ToDouble (Time::S) << "s");
Alexander Afanasyevbdc0d982011-12-16 01:15:26 -0800127
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800128 while (!m_seqTimeouts.empty ())
129 {
130 SeqTimeoutsContainer::index<i_timestamp>::type::iterator entry =
131 m_seqTimeouts.get<i_timestamp> ().begin ();
Alexander Afanasyev359bfb72012-01-09 18:42:50 -0800132 if (entry->time + rto <= now) // timeout expired?
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800133 {
Alexander Afanasyeve0e5bd12012-01-21 14:30:52 -0800134 uint32_t seqNo = entry->seq;
Alexander Afanasyev359bfb72012-01-09 18:42:50 -0800135 m_seqTimeouts.get<i_timestamp> ().erase (entry);
Alexander Afanasyeve0e5bd12012-01-21 14:30:52 -0800136 OnTimeout (seqNo);
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800137 }
138 else
139 break; // nothing else to do. All later packets need not be retransmitted
140 }
Alexander Afanasyev3183b5a2011-12-23 20:48:20 -0800141
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800142 m_retxEvent = Simulator::Schedule (m_retxTimer,
Alexander Afanasyev3a3ce1a2013-01-31 11:26:11 -0800143 &Consumer::CheckRetxTimeout, this);
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800144}
145
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700146// Application Methods
Alexander Afanasyev3a3ce1a2013-01-31 11:26:11 -0800147void
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700148Consumer::StartApplication () // Called at time specified by Start
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700149{
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800150 NS_LOG_FUNCTION_NOARGS ();
Alexander Afanasyevc5a23e22011-09-07 00:37:36 -0700151
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800152 // do base stuff
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700153 App::StartApplication ();
Alexander Afanasyev011b8592011-12-21 14:45:27 -0800154
155 ScheduleNextPacket ();
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700156}
Alexander Afanasyev3a3ce1a2013-01-31 11:26:11 -0800157
158void
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700159Consumer::StopApplication () // Called at time specified by Stop
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700160{
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800161 NS_LOG_FUNCTION_NOARGS ();
Alexander Afanasyevc5a23e22011-09-07 00:37:36 -0700162
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800163 // cancel periodic packet generation
164 Simulator::Cancel (m_sendEvent);
Alexander Afanasyevc5a23e22011-09-07 00:37:36 -0700165
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800166 // cleanup base stuff
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700167 App::StopApplication ();
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700168}
Alexander Afanasyev3a3ce1a2013-01-31 11:26:11 -0800169
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700170void
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700171Consumer::SendPacket ()
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700172{
Alexander Afanasyev3183b5a2011-12-23 20:48:20 -0800173 if (!m_active) return;
174
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800175 NS_LOG_FUNCTION_NOARGS ();
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800176
Alexander Afanasyev1ec705f2012-01-23 12:35:10 -0800177 uint32_t seq=std::numeric_limits<uint32_t>::max (); //invalid
178
179 while (m_retxSeqs.size ())
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800180 {
181 seq = *m_retxSeqs.begin ();
182 m_retxSeqs.erase (m_retxSeqs.begin ());
Alexander Afanasyev1ec705f2012-01-23 12:35:10 -0800183 break;
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800184 }
Alexander Afanasyev1ec705f2012-01-23 12:35:10 -0800185
186 if (seq == std::numeric_limits<uint32_t>::max ())
Alexander Afanasyevb3e4b852011-12-23 15:58:20 -0800187 {
Alexander Afanasyev812f7ab2012-01-24 11:08:04 -0800188 if (m_seqMax != std::numeric_limits<uint32_t>::max ())
Alexander Afanasyevb3e4b852011-12-23 15:58:20 -0800189 {
190 if (m_seq >= m_seqMax)
191 {
Alexander Afanasyev3183b5a2011-12-23 20:48:20 -0800192 return; // we are totally done
Alexander Afanasyevb3e4b852011-12-23 15:58:20 -0800193 }
194 }
Alexander Afanasyev3a3ce1a2013-01-31 11:26:11 -0800195
Alexander Afanasyevb3e4b852011-12-23 15:58:20 -0800196 seq = m_seq++;
197 }
Alexander Afanasyev3a3ce1a2013-01-31 11:26:11 -0800198
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800199 //
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700200 Ptr<NameComponents> nameWithSequence = Create<NameComponents> (m_interestName);
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800201 (*nameWithSequence) (seq);
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800202 //
203
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700204 InterestHeader interestHeader;
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800205 interestHeader.SetNonce (m_rand.GetValue ());
206 interestHeader.SetName (nameWithSequence);
Alexander Afanasyev1fb9fed2013-02-01 23:18:04 -0800207 interestHeader.SetInterestLifetime (m_interestLifeTime);
Alexander Afanasyev3a3ce1a2013-01-31 11:26:11 -0800208
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800209 // NS_LOG_INFO ("Requesting Interest: \n" << interestHeader);
210 NS_LOG_INFO ("> Interest for " << seq);
Alexander Afanasyevc5a23e22011-09-07 00:37:36 -0700211
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800212 Ptr<Packet> packet = Create<Packet> ();
213 packet->AddHeader (interestHeader);
Alexander Afanasyev59e67712012-02-07 11:49:34 -0800214 NS_LOG_DEBUG ("Interest packet size: " << packet->GetSize ());
Alexander Afanasyevd02a5d62011-11-21 11:01:51 -0800215
Alexander Afanasyev3a3ce1a2013-01-31 11:26:11 -0800216 NS_LOG_DEBUG ("Trying to add " << seq << " with " << Simulator::Now () << ". already " << m_seqTimeouts.size () << " items");
217
Alexander Afanasyev359bfb72012-01-09 18:42:50 -0800218 m_seqTimeouts.insert (SeqTimeout (seq, Simulator::Now ()));
Alexander Afanasyev400aae12013-01-19 13:27:52 -0800219 m_seqFullDelay.insert (SeqTimeout (seq, Simulator::Now ()));
220
221 m_seqLastDelay.erase (seq);
222 m_seqLastDelay.insert (SeqTimeout (seq, Simulator::Now ()));
223
224 m_seqRetxCounts[seq] ++;
Alexander Afanasyev3a3ce1a2013-01-31 11:26:11 -0800225
Alexander Afanasyevbdc0d982011-12-16 01:15:26 -0800226 m_transmittedInterests (&interestHeader, this, m_face);
Alexander Afanasyev011b8592011-12-21 14:45:27 -0800227
Alexander Afanasyev359bfb72012-01-09 18:42:50 -0800228 m_rtt->SentSeq (SequenceNumber32 (seq), 1);
Alexander Afanasyeve1aa9b92012-10-11 10:40:02 -0700229
Alexander Afanasyev1a0fff62013-01-19 14:29:51 -0800230 FwHopCountTag hopCountTag;
231 packet->AddPacketTag (hopCountTag);
Alexander Afanasyev3a3ce1a2013-01-31 11:26:11 -0800232
Alexander Afanasyeve1aa9b92012-10-11 10:40:02 -0700233 m_protocolHandler (packet);
234
Alexander Afanasyev011b8592011-12-21 14:45:27 -0800235 ScheduleNextPacket ();
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700236}
Alexander Afanasyevc5a23e22011-09-07 00:37:36 -0700237
Alexander Afanasyev011b8592011-12-21 14:45:27 -0800238///////////////////////////////////////////////////
239// Process incoming packets //
240///////////////////////////////////////////////////
241
242
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700243void
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700244Consumer::OnContentObject (const Ptr<const ContentObjectHeader> &contentObject,
Alexander Afanasyeve9c9d722012-01-19 16:59:30 -0800245 Ptr<Packet> payload)
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700246{
Alexander Afanasyev3183b5a2011-12-23 20:48:20 -0800247 if (!m_active) return;
248
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700249 App::OnContentObject (contentObject, payload); // tracing inside
Alexander Afanasyev3a3ce1a2013-01-31 11:26:11 -0800250
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800251 NS_LOG_FUNCTION (this << contentObject << payload);
252
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800253 // NS_LOG_INFO ("Received content object: " << boost::cref(*contentObject));
Alexander Afanasyev3a3ce1a2013-01-31 11:26:11 -0800254
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800255 uint32_t seq = boost::lexical_cast<uint32_t> (contentObject->GetName ().GetComponents ().back ());
256 NS_LOG_INFO ("< DATA for " << seq);
257
Alexander Afanasyev1a0fff62013-01-19 14:29:51 -0800258 int hopCount = -1;
259 FwHopCountTag hopCountTag;
260 if (payload->RemovePacketTag (hopCountTag))
261 {
262 hopCount = hopCountTag.Get ();
263 }
Alexander Afanasyev3a3ce1a2013-01-31 11:26:11 -0800264
Alexander Afanasyev400aae12013-01-19 13:27:52 -0800265 SeqTimeoutsContainer::iterator entry = m_seqLastDelay.find (seq);
266 if (entry != m_seqLastDelay.end ())
Alexander Afanasyevedf24d92013-01-18 13:35:06 -0800267 {
Alexander Afanasyev1a0fff62013-01-19 14:29:51 -0800268 m_lastRetransmittedInterestDataDelay (this, seq, Simulator::Now () - entry->time, hopCount);
Alexander Afanasyevedf24d92013-01-18 13:35:06 -0800269 }
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800270
Alexander Afanasyev400aae12013-01-19 13:27:52 -0800271 entry = m_seqFullDelay.find (seq);
272 if (entry != m_seqFullDelay.end ())
Alexander Afanasyevedf24d92013-01-18 13:35:06 -0800273 {
Alexander Afanasyev1a0fff62013-01-19 14:29:51 -0800274 m_firstInterestDataDelay (this, seq, Simulator::Now () - entry->time, m_seqRetxCounts[seq], hopCount);
Alexander Afanasyevedf24d92013-01-18 13:35:06 -0800275 }
Alexander Afanasyev400aae12013-01-19 13:27:52 -0800276
Alexander Afanasyev3a3ce1a2013-01-31 11:26:11 -0800277 m_seqRetxCounts.erase (seq);
Alexander Afanasyev400aae12013-01-19 13:27:52 -0800278 m_seqFullDelay.erase (seq);
279 m_seqLastDelay.erase (seq);
Alexander Afanasyev3a3ce1a2013-01-31 11:26:11 -0800280
Alexander Afanasyev36d5c2a2012-01-02 19:09:19 -0800281 m_seqTimeouts.erase (seq);
282 m_retxSeqs.erase (seq);
Alexander Afanasyev359bfb72012-01-09 18:42:50 -0800283
284 m_rtt->AckSeq (SequenceNumber32 (seq));
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800285}
286
287void
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700288Consumer::OnNack (const Ptr<const InterestHeader> &interest, Ptr<Packet> origPacket)
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800289{
Alexander Afanasyev3183b5a2011-12-23 20:48:20 -0800290 if (!m_active) return;
Alexander Afanasyev3a3ce1a2013-01-31 11:26:11 -0800291
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700292 App::OnNack (interest, origPacket); // tracing inside
Alexander Afanasyev3a3ce1a2013-01-31 11:26:11 -0800293
Alexander Afanasyeve1b2a2d2012-11-16 11:53:42 -0800294 // NS_LOG_DEBUG ("Nack type: " << interest->GetNack ());
Alexander Afanasyev120bf312011-12-19 01:24:47 -0800295
Alexander Afanasyeve1b2a2d2012-11-16 11:53:42 -0800296 // NS_LOG_FUNCTION (interest->GetName ());
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800297
298 // NS_LOG_INFO ("Received NACK: " << boost::cref(*interest));
299 uint32_t seq = boost::lexical_cast<uint32_t> (interest->GetName ().GetComponents ().back ());
300 NS_LOG_INFO ("< NACK for " << seq);
Alexander Afanasyev3a3ce1a2013-01-31 11:26:11 -0800301 // std::cout << Simulator::Now ().ToDouble (Time::S) << "s -> " << "NACK for " << seq << "\n";
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800302
303 // put in the queue of interests to be retransmitted
Alexander Afanasyeve1b2a2d2012-11-16 11:53:42 -0800304 // NS_LOG_INFO ("Before: " << m_retxSeqs.size ());
Alexander Afanasyev781ea812011-12-15 22:42:09 -0800305 m_retxSeqs.insert (seq);
Alexander Afanasyeve1b2a2d2012-11-16 11:53:42 -0800306 // NS_LOG_INFO ("After: " << m_retxSeqs.size ());
Alexander Afanasyev3183b5a2011-12-23 20:48:20 -0800307
Alexander Afanasyev3a3ce1a2013-01-31 11:26:11 -0800308 m_seqTimeouts.erase (seq);
309
Alexander Afanasyev92d5be12012-08-13 18:56:52 -0700310 m_rtt->IncreaseMultiplier (); // Double the next RTO ??
Alexander Afanasyev3183b5a2011-12-23 20:48:20 -0800311 ScheduleNextPacket ();
Ilya Moiseenko8196d2e2011-08-29 13:03:22 -0700312}
Alexander Afanasyevc5a23e22011-09-07 00:37:36 -0700313
Alexander Afanasyev359bfb72012-01-09 18:42:50 -0800314void
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700315Consumer::OnTimeout (uint32_t sequenceNumber)
Alexander Afanasyev359bfb72012-01-09 18:42:50 -0800316{
Alexander Afanasyev92d5be12012-08-13 18:56:52 -0700317 NS_LOG_FUNCTION (sequenceNumber);
Alexander Afanasyev8e0d2812012-01-19 22:38:14 -0800318 // std::cout << Simulator::Now () << ", TO: " << sequenceNumber << ", current RTO: " << m_rtt->RetransmitTimeout ().ToDouble (Time::S) << "s\n";
Alexander Afanasyevb7ad2322012-01-17 22:54:49 -0800319
Alexander Afanasyev92d5be12012-08-13 18:56:52 -0700320 m_rtt->IncreaseMultiplier (); // Double the next RTO
Alexander Afanasyev8e0d2812012-01-19 22:38:14 -0800321 m_rtt->SentSeq (SequenceNumber32 (sequenceNumber), 1); // make sure to disable RTT calculation for this sample
Alexander Afanasyev4d66de52012-01-13 00:06:01 -0800322 m_retxSeqs.insert (sequenceNumber);
Alexander Afanasyev3a3ce1a2013-01-31 11:26:11 -0800323 ScheduleNextPacket ();
Alexander Afanasyev359bfb72012-01-09 18:42:50 -0800324}
325
Alexander Afanasyev2b4c9472012-08-09 15:00:38 -0700326} // namespace ndn
Alexander Afanasyev09c7deb2011-11-23 14:50:10 -0800327} // namespace ns3