A Discrete-Event Network Simulator
API
tcp-cong-avoid-test.cc
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1/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
2/*
3 * Copyright (c) 2015 Natale Patriciello <natale.patriciello@gmail.com>
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 */
19#include "ns3/log.h"
20#include "ns3/simple-channel.h"
21#include "ns3/config.h"
22#include "ns3/test.h"
23#include "tcp-general-test.h"
24
25using namespace ns3;
26
27NS_LOG_COMPONENT_DEFINE ("TcpNewRenoCongAvoidTest");
28
55class
57{
58public:
68 uint32_t packets, const TypeId& congControl,
69 const std::string &desc);
70protected:
71 virtual void CWndTrace (uint32_t oldValue, uint32_t newValue);
72 virtual void QueueDrop (SocketWho who);
73 virtual void PhyDrop (SocketWho who);
74 virtual void NormalClose (SocketWho who);
79 void Check ();
80
81 virtual void ConfigureEnvironment ();
82 virtual void ConfigureProperties ();
83
84private:
90 bool m_initial;
91};
92
93
96 uint32_t packets,
97 const TypeId &typeId,
98 const std::string &desc)
99 : TcpGeneralTest (desc),
100 m_segmentSize (segmentSize),
101 m_packetSize (packetSize),
102 m_packets (packets),
103 m_increment (0),
104 m_initial (true)
105{
106 m_congControlTypeId = typeId;
107}
108
109void
111{
112 TcpGeneralTest::ConfigureEnvironment ();
115 SetMTU (1500);
116}
117
119{
120 TcpGeneralTest::ConfigureProperties ();
123}
124
125void
127{
128 if (m_initial)
129 {
130 m_initial = false;
131 return;
132 }
133
134 if (!m_event.IsRunning ())
135 {
136 m_event = Simulator::Schedule (Seconds (1.0),
138 }
139
140 m_increment += newValue - oldValue;
141}
142
143void
145{
146 NS_FATAL_ERROR ("Drop on the queue; cannot validate congestion avoidance");
147}
148
149void
151{
152 NS_FATAL_ERROR ("Drop on the phy: cannot validate congestion avoidance");
153}
154
155void
157{
158 uint32_t segSize = GetSegSize (TcpGeneralTest::SENDER);
159
160 if (m_increment != 0)
161 {
163 "Increment exceeded segment size in one RTT");
164 }
165
166 m_increment = 0;
167
168 m_event = Simulator::Schedule (Seconds (1.0),
170
171}
172
173void
175{
176 if (who == SENDER)
177 {
178 m_event.Cancel ();
179 }
180}
181
182
183
191{
192public:
193 TcpRenoCongAvoidTestSuite () : TestSuite ("tcp-cong-avoid-test", UNIT)
194 {
195 std::list<TypeId> types = {
196 TcpNewReno::GetTypeId (),
197 };
198
199 for (const auto &t : types)
200 {
201 std::string typeName = t.GetName ();
202
203 for (uint32_t i = 10; i <= 50; i += 10)
204 {
205 AddTestCase (new TcpNewRenoCongAvoidNormalTest (500, 500, i, t, "cong avoid MSS=500, pkt_size=500," + typeName),
206 TestCase::QUICK);
207 AddTestCase (new TcpNewRenoCongAvoidNormalTest (500, 1000, i, t, "cong avoid MSS=500, pkt_size=1000," + typeName),
208 TestCase::QUICK);
209 }
210 }
211 }
212};
213
Test the behavior of RFC congestion avoidance.
void Check()
Called each RTT (1.0 sec in the testing environment) and check that the overall increment in this RTT...
virtual void CWndTrace(uint32_t oldValue, uint32_t newValue)
Tracks the congestion window changes.
uint32_t m_segmentSize
Segment size.
virtual void NormalClose(SocketWho who)
Socket closed normally.
uint32_t m_packets
Number of packets.
virtual void PhyDrop(SocketWho who)
Link drop.
virtual void ConfigureProperties()
Change the configuration of the socket properties.
bool m_initial
True on first run.
TcpNewRenoCongAvoidNormalTest(uint32_t segmentSize, uint32_t packetSize, uint32_t packets, const TypeId &congControl, const std::string &desc)
Constructor.
virtual void QueueDrop(SocketWho who)
Drop on the queue.
virtual void ConfigureEnvironment()
Change the configuration of the environment.
uint32_t m_packetSize
Size of the packets.
uint32_t m_increment
Congestion window increment.
TestSuite for the behavior of RFC congestion avoidance.
An identifier for simulation events.
Definition: event-id.h:54
bool IsRunning(void) const
This method is syntactic sugar for !IsExpired().
Definition: event-id.cc:71
void Cancel(void)
This method is syntactic sugar for the ns3::Simulator::Cancel method.
Definition: event-id.cc:53
General infrastructure for TCP testing.
void SetAppPktCount(uint32_t pktCount)
Set app packet count.
SocketWho
Used as parameter of methods, specifies on what node the caller is interested (e.g.
void SetAppPktSize(uint32_t pktSize)
Set app packet size.
void SetMTU(uint32_t mtu)
MTU of the bottleneck link.
uint32_t GetSegSize(SocketWho who)
Get the segment size of the node specified.
TypeId m_congControlTypeId
Congestion control.
void SetInitialSsThresh(SocketWho who, uint32_t initialSsThresh)
Forcefully set the initial ssthresh.
void SetSegmentSize(SocketWho who, uint32_t segmentSize)
Forcefully set the segment size.
void AddTestCase(TestCase *testCase, TestDuration duration=QUICK)
Add an individual child TestCase to this test suite.
Definition: test.cc:299
std::string GetName(void) const
Definition: test.cc:370
A suite of tests to run.
Definition: test.h:1188
@ UNIT
This test suite implements a Unit Test.
Definition: test.h:1197
a unique identifier for an interface.
Definition: type-id.h:59
uint32_t segmentSize
#define NS_FATAL_ERROR(msg)
Report a fatal error with a message and terminate.
Definition: fatal-error.h:165
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition: log.h:205
#define NS_TEST_ASSERT_MSG_LT_OR_EQ(actual, limit, msg)
Test that an actual value is less than or equal to a limit and report and abort if not.
Definition: test.h:712
Time Seconds(double value)
Construct a Time in the indicated unit.
Definition: nstime.h:1245
Every class exported by the ns3 library is enclosed in the ns3 namespace.
static TcpRenoCongAvoidTestSuite g_tcpCongAvoidNormalTest
Static variable for test initialization.
static const uint32_t packetSize
Packet size generated at the AP.