A Discrete-Event Network Simulator
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tcp-classic-recovery-test.cc
Go to the documentation of this file.
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/*
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* Copyright (c) 2018 NITK Surathkal
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*
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* SPDX-License-Identifier: GPL-2.0-only
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*
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* Author: Viyom Mittal <viyommittal@gmail.com>
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* Vivek Jain <jain.vivek.anand@gmail.com>
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* Mohit P. Tahiliani <tahiliani@nitk.edu.in>
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*
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*/
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#include "ns3/log.h"
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#include "ns3/string.h"
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#include "ns3/tcp-congestion-ops.h"
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#include "ns3/tcp-recovery-ops.h"
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#include "ns3/tcp-socket-base.h"
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#include "ns3/test.h"
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using namespace
ns3
;
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NS_LOG_COMPONENT_DEFINE
(
"TcpClassicRecoveryTestSuite"
);
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/**
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* \brief Classic Recovery algorithm test
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*/
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class
ClassicRecoveryTest
:
public
TestCase
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{
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public
:
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/**
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* \brief Constructor.
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* \param cWnd Congestion window.
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* \param segmentSize Segment size.
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* \param ssThresh Slow Start Threshold.
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* \param dupAckCount Duplicate acknowledgement Threshold.
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* \param name Test description.
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*/
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ClassicRecoveryTest
(
uint32_t
cWnd,
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uint32_t
segmentSize
,
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uint32_t
ssThresh,
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uint32_t
dupAckCount,
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const
std::string& name);
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private
:
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void
DoRun
()
override
;
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uint32_t
m_cWnd
;
//!< Congestion window.
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uint32_t
m_segmentSize
;
//!< Segment size.
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uint32_t
m_ssThresh
;
//!< Slow Start Threshold.
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uint32_t
m_dupAckCount
;
//!< Duplicate acknowledgement Threshold.
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Ptr<TcpSocketState>
m_state
;
//!< TCP socket state.
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};
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ClassicRecoveryTest::ClassicRecoveryTest
(
uint32_t
cWnd,
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uint32_t
segmentSize
,
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uint32_t
ssThresh,
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uint32_t
dupAckCount,
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const
std::string& name)
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:
TestCase
(name),
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m_cWnd(cWnd),
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m_segmentSize(
segmentSize
),
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m_ssThresh(ssThresh),
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m_dupAckCount(dupAckCount)
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{
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}
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void
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ClassicRecoveryTest::DoRun
()
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{
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m_state
=
CreateObject<TcpSocketState>
();
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m_state
->m_cWnd =
m_cWnd
;
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m_state
->m_segmentSize =
m_segmentSize
;
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m_state
->m_ssThresh =
m_ssThresh
;
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Ptr<TcpClassicRecovery>
recovery =
CreateObject<TcpClassicRecovery>
();
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NS_TEST_ASSERT_MSG_EQ
(recovery->GetName(),
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"TcpClassicRecovery"
,
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"The name of recovery used should be TcpClassicRecovery"
);
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recovery->EnterRecovery(
m_state
,
m_dupAckCount
, 1000, 0);
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NS_TEST_ASSERT_MSG_EQ
(
m_state
->m_cWnd,
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m_state
->m_ssThresh,
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"cWnd should be set to ssThresh on entering recovery"
);
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NS_TEST_ASSERT_MSG_EQ
(
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m_state
->m_cWndInfl,
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(
m_state
->m_ssThresh + (
m_dupAckCount
*
m_state
->m_segmentSize)),
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"cWndInfl should be set to (ssThresh + dupAckCount * segmentSize) on entering recovery"
);
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uint32_t
cWndInflPrevious =
m_state
->m_cWndInfl;
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uint32_t
cWndPrevious =
m_state
->m_cWnd;
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recovery->DoRecovery(
m_state
, 500,
false
);
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NS_TEST_ASSERT_MSG_EQ
(
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m_state
->m_cWndInfl,
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(cWndInflPrevious +
m_state
->m_segmentSize),
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"m_cWndInfl should be increased by one segmentSize on calling DoRecovery"
);
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NS_TEST_ASSERT_MSG_EQ
(
m_state
->m_cWnd, cWndPrevious,
"cWnd should not change in recovery"
);
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recovery->ExitRecovery(
m_state
);
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NS_TEST_ASSERT_MSG_EQ
(
m_state
->m_cWndInfl,
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m_state
->m_ssThresh,
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"cWndInfl should be set to ssThresh on exiting recovery"
);
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NS_TEST_ASSERT_MSG_EQ
(
m_state
->m_cWnd,
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m_state
->m_ssThresh,
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"cWnd should be set to ssThresh on exiting recovery"
);
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}
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/**
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* \ingroup internet-test
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*
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* \brief Classic Recovery TestSuite
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*/
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class
ClassicRecoveryTestSuite
:
public
TestSuite
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{
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public
:
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ClassicRecoveryTestSuite
()
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:
TestSuite
(
"tcp-classic-recovery-test"
,
Type
::
UNIT
)
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{
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AddTestCase
(
new
ClassicRecoveryTest
(3000,
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500,
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2500,
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3,
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"Classic recovery test with 500 bytes segmentSize"
),
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TestCase::Duration::QUICK);
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AddTestCase
(
new
ClassicRecoveryTest
(3000,
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1000,
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2500,
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3,
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"Classic recovery test with 1000 bytes segmentSize"
),
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TestCase::Duration::QUICK);
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AddTestCase
(
new
ClassicRecoveryTest
(3000,
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500,
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2500,
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4,
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"Classic recovery test with 4 DupAck threshold"
),
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TestCase::Duration::QUICK);
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AddTestCase
(
new
ClassicRecoveryTest
(3000,
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500,
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1000,
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3,
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"Classic recovery test with 1000 bytes ssThresh"
),
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TestCase::Duration::QUICK);
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AddTestCase
(
new
ClassicRecoveryTest
(2500,
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500,
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2500,
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3,
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"Classic recovery test with same cWnd and ssThresh"
),
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TestCase::Duration::QUICK);
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AddTestCase
(
new
ClassicRecoveryTest
(1000,
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500,
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2500,
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3,
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"Classic recovery test with cWnd lesser than ssThresh"
),
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TestCase::Duration::QUICK);
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}
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};
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static
ClassicRecoveryTestSuite
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g_TcpClassicRecoveryTest
;
//!< Static variable for test initialization
ClassicRecoveryTest
Classic Recovery algorithm test.
Definition
tcp-classic-recovery-test.cc:27
ClassicRecoveryTest::ClassicRecoveryTest
ClassicRecoveryTest(uint32_t cWnd, uint32_t segmentSize, uint32_t ssThresh, uint32_t dupAckCount, const std::string &name)
Constructor.
Definition
tcp-classic-recovery-test.cc:54
ClassicRecoveryTest::m_cWnd
uint32_t m_cWnd
Congestion window.
Definition
tcp-classic-recovery-test.cc:46
ClassicRecoveryTest::m_state
Ptr< TcpSocketState > m_state
TCP socket state.
Definition
tcp-classic-recovery-test.cc:51
ClassicRecoveryTest::DoRun
void DoRun() override
Implementation to actually run this TestCase.
Definition
tcp-classic-recovery-test.cc:68
ClassicRecoveryTest::m_ssThresh
uint32_t m_ssThresh
Slow Start Threshold.
Definition
tcp-classic-recovery-test.cc:48
ClassicRecoveryTest::m_dupAckCount
uint32_t m_dupAckCount
Duplicate acknowledgement Threshold.
Definition
tcp-classic-recovery-test.cc:49
ClassicRecoveryTest::m_segmentSize
uint32_t m_segmentSize
Segment size.
Definition
tcp-classic-recovery-test.cc:47
ClassicRecoveryTestSuite
Classic Recovery TestSuite.
Definition
tcp-classic-recovery-test.cc:115
ClassicRecoveryTestSuite::ClassicRecoveryTestSuite
ClassicRecoveryTestSuite()
Definition
tcp-classic-recovery-test.cc:117
ns3::Ptr
Smart pointer class similar to boost::intrusive_ptr.
Definition
mpi-test-fixtures.h:37
ns3::TestCase
encapsulates test code
Definition
test.h:1050
ns3::TestCase::AddTestCase
void AddTestCase(TestCase *testCase, Duration duration=Duration::QUICK)
Add an individual child TestCase to this test suite.
Definition
test.cc:292
ns3::TestSuite
A suite of tests to run.
Definition
test.h:1267
ns3::TestSuite::Type
Type
Type of test.
Definition
test.h:1274
ns3::TestSuite::UNIT
static constexpr auto UNIT
Definition
test.h:1291
uint32_t
segmentSize
uint32_t segmentSize
Definition
tcp-linux-reno.cc:42
NS_LOG_COMPONENT_DEFINE
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition
log.h:191
ns3::CreateObject
Ptr< T > CreateObject(Args &&... args)
Create an object by type, with varying number of constructor parameters.
Definition
object.h:619
NS_TEST_ASSERT_MSG_EQ
#define NS_TEST_ASSERT_MSG_EQ(actual, limit, msg)
Test that an actual and expected (limit) value are equal and report and abort if not.
Definition
test.h:134
ns3
Every class exported by the ns3 library is enclosed in the ns3 namespace.
g_TcpClassicRecoveryTest
static ClassicRecoveryTestSuite g_TcpClassicRecoveryTest
Static variable for test initialization.
Definition
tcp-classic-recovery-test.cc:160
src
internet
test
tcp-classic-recovery-test.cc
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