A Discrete-Event Network Simulator
API
ns3::TcpEcnTest Class Reference

checks if ECT, CWR and ECE bits are set correctly in different scenarios More...

+ Inheritance diagram for ns3::TcpEcnTest:
+ Collaboration diagram for ns3::TcpEcnTest:

Public Member Functions

 TcpEcnTest (uint32_t testcase, const std::string &desc)
 Constructor. More...
 
- Public Member Functions inherited from ns3::TcpGeneralTest
 TcpGeneralTest (const std::string &desc)
 TcpGeneralTest constructor. More...
 
 ~TcpGeneralTest ()
 
- Public Member Functions inherited from ns3::TestCase
virtual ~TestCase ()
 Destructor. More...
 
std::string GetName (void) const
 

Protected Member Functions

void ConfigureProperties ()
 Change the configuration of the socket properties. More...
 
virtual Ptr< TcpSocketMsgBaseCreateSenderSocket (Ptr< Node > node)
 Create and install the socket to install on the sender. More...
 
virtual void CWndTrace (uint32_t oldValue, uint32_t newValue)
 Tracks the congestion window changes. More...
 
virtual void Rx (const Ptr< const Packet > p, const TcpHeader &h, SocketWho who)
 Packet received from IP layer. More...
 
virtual void Tx (const Ptr< const Packet > p, const TcpHeader &h, SocketWho who)
 Packet transmitted down to IP layer. More...
 
- Protected Member Functions inherited from ns3::TcpGeneralTest
virtual void AfterRTOExpired (const Ptr< const TcpSocketState > tcb, SocketWho who)
 Rto has expired. More...
 
virtual void BeforeRTOExpired (const Ptr< const TcpSocketState > tcb, SocketWho who)
 Rto has expired. More...
 
virtual void BytesInFlightTrace (uint32_t oldValue, uint32_t newValue)
 Bytes in flight changes. More...
 
virtual void ConfigureEnvironment (void)
 Change the configuration of the environment. More...
 
virtual void CongStateTrace (const TcpSocketState::TcpCongState_t oldValue, const TcpSocketState::TcpCongState_t newValue)
 State on Ack state machine changes. More...
 
virtual Ptr< SimpleChannelCreateChannel ()
 Create and return the channel installed between the two socket. More...
 
virtual Ptr< ErrorModelCreateReceiverErrorModel ()
 Create and return the error model to install in the receiver node. More...
 
virtual Ptr< TcpSocketMsgBaseCreateReceiverSocket (Ptr< Node > node)
 Create and install the socket to install on the receiver. More...
 
virtual Ptr< ErrorModelCreateSenderErrorModel ()
 Create and return the error model to install in the sender node. More...
 
virtual Ptr< TcpSocketMsgBaseCreateSocket (Ptr< Node > node, TypeId socketType, TypeId congControl)
 Create a socket. More...
 
virtual Ptr< TcpSocketMsgBaseCreateSocket (Ptr< Node > node, TypeId socketType, TypeId congControl, TypeId recoveryAlgorithm)
 Create a socket. More...
 
virtual void CWndInflTrace (uint32_t oldValue, uint32_t newValue)
 Tracks the inflated congestion window changes. More...
 
virtual void DataSent (uint32_t size, SocketWho who)
 Notifying application for sent data. More...
 
void DoConnect ()
 Scheduled at 0.0, SENDER starts the connection to RECEIVER. More...
 
virtual void DoRun (void)
 Execute the tcp test. More...
 
virtual void DoTeardown (void)
 Teardown the TCP test. More...
 
virtual void ErrorClose (SocketWho who)
 Socket closed with an error. More...
 
virtual void FinalChecks ()
 Performs the (eventual) final checks through test asserts. More...
 
Time GetClockGranularity (SocketWho who)
 Get the clock granularity attribute. More...
 
Time GetConnTimeout (SocketWho who)
 Get the retransmission time for the SYN segments. More...
 
uint32_t GetDelAckCount (SocketWho who)
 Get the number of delayed ack (if present) More...
 
Time GetDelAckTimeout (SocketWho who)
 Get the timeout of delayed ack (if present) More...
 
uint32_t GetDupAckCount (SocketWho who)
 Get the number of dupack received. More...
 
SequenceNumber32 GetHighestTxMark (SocketWho who)
 Get the highest tx mark of the node specified. More...
 
uint32_t GetInitialCwnd (SocketWho who)
 Get the initial congestion window. More...
 
uint32_t GetInitialSsThresh (SocketWho who)
 Get the initial slow start threshold. More...
 
Time GetMinRto (SocketWho who)
 Get the minimum RTO attribute. More...
 
uint32_t GetMtu () const
 Get the MTU of the environment. More...
 
EventId GetPersistentEvent (SocketWho who)
 Get the persistent event of the selected socket. More...
 
Time GetPersistentTimeout (SocketWho who)
 Get the persistent timeout of the selected socket. More...
 
uint32_t GetPktCount () const
 Get the number of application packets. More...
 
Time GetPktInterval () const
 Get the interval to wait for each packet sent down from application to TCP. More...
 
uint32_t GetPktSize () const
 Get the application packet size. More...
 
Time GetPropagationDelay () const
 Get the channel Propagation Delay. More...
 
Ptr< TcpSocketMsgBaseGetReceiverSocket ()
 Get the pointer to a previously created receiver socket. More...
 
uint32_t GetReTxThreshold (SocketWho who)
 Get the retransmission threshold. More...
 
Time GetRto (SocketWho who)
 Get the retransmission time. More...
 
Ptr< RttEstimatorGetRttEstimator (SocketWho who)
 Get the Rtt estimator of the socket. More...
 
uint32_t GetRWnd (SocketWho who)
 Get the rWnd of the selected socket. More...
 
Ptr< TcpRxBufferGetRxBuffer (SocketWho who)
 Get the Rx buffer from selected socket. More...
 
uint32_t GetSegSize (SocketWho who)
 Get the segment size of the node specified. More...
 
Ptr< TcpSocketMsgBaseGetSenderSocket ()
 Get the pointer to a previously created sender socket. More...
 
Time GetStartTime () const
 Get the data start time. More...
 
Ptr< TcpSocketStateGetTcb (SocketWho who)
 Get the TCB from selected socket. More...
 
TcpSocket::TcpStates_t GetTcpState (SocketWho who)
 Get the state of the TCP state machine. More...
 
Ptr< TcpTxBufferGetTxBuffer (SocketWho who)
 Get the Tx buffer from selected socket. More...
 
virtual void HighestTxSeqTrace (SequenceNumber32 oldValue, SequenceNumber32 newValue)
 Highest tx seq changes. More...
 
virtual void NextTxSeqTrace (SequenceNumber32 oldValue, SequenceNumber32 newValue)
 Next tx seq changes. More...
 
virtual void NormalClose (SocketWho who)
 Socket closed normally. More...
 
virtual void PhyDrop (SocketWho who)
 Link drop. More...
 
virtual void ProcessedAck (const Ptr< const TcpSocketState > tcb, const TcpHeader &h, SocketWho who)
 Processed ack. More...
 
virtual void QueueDrop (SocketWho who)
 Drop on the queue. More...
 
virtual void RateSampleUpdatedTrace (const TcpRateLinux::TcpRateSample &sample)
 Track the rate sample value of TcpRateLinux. More...
 
virtual void RateUpdatedTrace (const TcpRateLinux::TcpRateConnection &rate)
 Track the rate value of TcpRateLinux. More...
 
virtual void RcvAck (const Ptr< const TcpSocketState > tcb, const TcpHeader &h, SocketWho who)
 Received ack. More...
 
virtual void ReceivePacket (Ptr< Socket > socket)
 Packet received. More...
 
virtual void RtoTrace (Time oldValue, Time newValue)
 RTO changes. More...
 
virtual void RttTrace (Time oldTime, Time newTime)
 Rtt changes. More...
 
void SendPacket (Ptr< Socket > socket, uint32_t pktSize, uint32_t pktCount, Time pktInterval)
 Send packets to other endpoint. More...
 
void SetAppPktCount (uint32_t pktCount)
 Set app packet count. More...
 
void SetAppPktInterval (Time pktInterval)
 Interval between app-generated packet. More...
 
void SetAppPktSize (uint32_t pktSize)
 Set app packet size. More...
 
void SetCongestionControl (TypeId congControl)
 Congestion control of the sender socket. More...
 
void SetEcn (SocketWho who, TcpSocketBase::EcnMode_t ecnMode)
 Forcefully set the ecn mode on. More...
 
void SetInitialCwnd (SocketWho who, uint32_t initialCwnd)
 Forcefully set the initial cwnd. More...
 
void SetInitialSsThresh (SocketWho who, uint32_t initialSsThresh)
 Forcefully set the initial ssth. More...
 
void SetMTU (uint32_t mtu)
 MTU of the bottleneck link. More...
 
void SetPropagationDelay (Time propDelay)
 Propagation delay of the bottleneck link. More...
 
void SetRcvBufSize (SocketWho who, uint32_t size)
 Forcefully set a defined size for rx buffer. More...
 
void SetRecoveryAlgorithm (TypeId reccovery)
 recovery algorithm of the sender socket More...
 
void SetSegmentSize (SocketWho who, uint32_t segmentSize)
 Forcefully set the segment size. More...
 
void SetTransmitStart (Time startTime)
 Set the initial time at which the application sends the first data packet. More...
 
virtual void SsThreshTrace (uint32_t oldValue, uint32_t newValue)
 Slow start threshold changes. More...
 
virtual void UpdatedRttHistory (const SequenceNumber32 &seq, uint32_t sz, bool isRetransmission, SocketWho who)
 Updated the Rtt history. More...
 
- Protected Member Functions inherited from ns3::TestCase
 TestCase (std::string name)
 Constructor. More...
 
void AddTestCase (TestCase *testCase, TestDuration duration=QUICK)
 Add an individual child TestCase to this test suite. More...
 
TestCaseGetParent () const
 Get the parent of this TestCsse. More...
 
bool IsStatusFailure (void) const
 Check if any tests failed. More...
 
bool IsStatusSuccess (void) const
 Check if all tests passed. More...
 
void SetDataDir (std::string directory)
 Set the data directory where reference trace files can be found. More...
 
void ReportTestFailure (std::string cond, std::string actual, std::string limit, std::string message, std::string file, int32_t line)
 Log the failure of this TestCase. More...
 
bool MustAssertOnFailure (void) const
 Check if this run should assert on failure. More...
 
bool MustContinueOnFailure (void) const
 Check if this run should continue on failure. More...
 
std::string CreateDataDirFilename (std::string filename)
 Construct the full path to a file in the data directory. More...
 
std::string CreateTempDirFilename (std::string filename)
 Construct the full path to a file in a temporary directory. More...
 

Private Attributes

uint32_t m_cwndChangeCount
 
uint32_t m_receiverReceived
 
uint32_t m_senderReceived
 
uint32_t m_senderSent
 
uint32_t m_testcase
 

Additional Inherited Members

- Public Types inherited from ns3::TcpGeneralTest
enum  SocketWho { SENDER, RECEIVER }
 Used as parameter of methods, specifies on what node the caller is interested (e.g. More...
 
- Public Types inherited from ns3::TestCase
enum  TestDuration { QUICK = 1, EXTENSIVE = 2, TAKES_FOREVER = 3 }
 How long the test takes to execute. More...
 
- Protected Attributes inherited from ns3::TcpGeneralTest
TypeId m_congControlTypeId
 Congestion control. More...
 
TypeId m_recoveryTypeId
 Recovery. More...
 

Detailed Description

checks if ECT, CWR and ECE bits are set correctly in different scenarios

This test suite will run four combinations of enabling ECN (sender off and receiver off; sender on and receiver off; sender off and receiver on; sender on and receiver on;) and checks that the TOS byte of eventual packets transmitted or received have ECT, CWR, and ECE set correctly (or not). It also checks if congestion window is being reduced by half only once per every window on receipt of ECE flags

Definition at line 53 of file tcp-ecn-test.cc.

Constructor & Destructor Documentation

◆ TcpEcnTest()

ns3::TcpEcnTest::TcpEcnTest ( uint32_t  testcase,
const std::string &  desc 
)

Constructor.

Parameters
testcasetest case number
descDescription about the ECN capabilities of sender and receiver

Definition at line 392 of file tcp-ecn-test.cc.

Member Function Documentation

◆ ConfigureProperties()

void ns3::TcpEcnTest::ConfigureProperties ( void  )
protectedvirtual

Change the configuration of the socket properties.

Reimplemented from ns3::TcpGeneralTest.

Definition at line 403 of file tcp-ecn-test.cc.

References ns3::TcpSocketBase::ClassicEcn, ns3::TcpGeneralTest::ConfigureProperties(), m_testcase, ns3::TcpGeneralTest::RECEIVER, ns3::TcpGeneralTest::SENDER, and ns3::TcpGeneralTest::SetEcn().

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◆ CreateSenderSocket()

Ptr< TcpSocketMsgBase > ns3::TcpEcnTest::CreateSenderSocket ( Ptr< Node node)
protectedvirtual

Create and install the socket to install on the sender.

Parameters
nodesender node pointer
Returns
the socket to be installed in the sender

Reimplemented from ns3::TcpGeneralTest.

Definition at line 526 of file tcp-ecn-test.cc.

References ns3::TcpGeneralTest::CreateSenderSocket(), ns3::TcpGeneralTest::CreateSocket(), ns3::TcpSocketCongestedRouter::GetTypeId(), ns3::TcpGeneralTest::m_congControlTypeId, and m_testcase.

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◆ CWndTrace()

void ns3::TcpEcnTest::CWndTrace ( uint32_t  oldValue,
uint32_t  newValue 
)
protectedvirtual

Tracks the congestion window changes.

Parameters
oldValueold value
newValuenew value

Reimplemented from ns3::TcpGeneralTest.

Definition at line 417 of file tcp-ecn-test.cc.

References m_cwndChangeCount, m_testcase, and NS_TEST_ASSERT_MSG_EQ.

◆ Rx()

void ns3::TcpEcnTest::Rx ( const Ptr< const Packet p,
const TcpHeader h,
SocketWho  who 
)
protectedvirtual

Packet received from IP layer.

Parameters
ppacket
hheader
whothe socket which has received the packet (SENDER or RECEIVER)

Reimplemented from ns3::TcpGeneralTest.

Definition at line 431 of file tcp-ecn-test.cc.

References ns3::TcpHeader::ACK, ns3::TcpHeader::CWR, ns3::TcpHeader::ECE, ns3::TcpHeader::GetFlags(), m_receiverReceived, m_senderReceived, m_testcase, NS_TEST_ASSERT_MSG_EQ, NS_TEST_ASSERT_MSG_NE, ns3::TcpGeneralTest::RECEIVER, ns3::TcpGeneralTest::SENDER, and ns3::TcpHeader::SYN.

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◆ Tx()

void ns3::TcpEcnTest::Tx ( const Ptr< const Packet p,
const TcpHeader h,
SocketWho  who 
)
protectedvirtual

Packet transmitted down to IP layer.

Parameters
ppacket
hheader
whothe socket which has received the packet (SENDER or RECEIVER)

Reimplemented from ns3::TcpGeneralTest.

Definition at line 488 of file tcp-ecn-test.cc.

References ns3::SocketIpTosTag::GetTos(), m_senderSent, m_testcase, NS_TEST_ASSERT_MSG_EQ, NS_TEST_ASSERT_MSG_NE, ns3::Packet::PeekPacketTag(), and ns3::TcpGeneralTest::SENDER.

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Member Data Documentation

◆ m_cwndChangeCount

uint32_t ns3::TcpEcnTest::m_cwndChangeCount
private

Definition at line 72 of file tcp-ecn-test.cc.

Referenced by CWndTrace().

◆ m_receiverReceived

uint32_t ns3::TcpEcnTest::m_receiverReceived
private

Definition at line 75 of file tcp-ecn-test.cc.

Referenced by Rx().

◆ m_senderReceived

uint32_t ns3::TcpEcnTest::m_senderReceived
private

Definition at line 74 of file tcp-ecn-test.cc.

Referenced by Rx().

◆ m_senderSent

uint32_t ns3::TcpEcnTest::m_senderSent
private

Definition at line 73 of file tcp-ecn-test.cc.

Referenced by Tx().

◆ m_testcase

uint32_t ns3::TcpEcnTest::m_testcase
private

Definition at line 76 of file tcp-ecn-test.cc.

Referenced by ConfigureProperties(), CreateSenderSocket(), CWndTrace(), Rx(), and Tx().


The documentation for this class was generated from the following file: