Test the new formula for calculating TCP's advertised window size. More...
Public Member Functions | |
TcpAdvertisedWindowTest (const std::string &desc, uint32_t size, uint32_t packets, double lossRatio) | |
Constructor. | |
Public Member Functions inherited from ns3::TcpGeneralTest | |
TcpGeneralTest (const std::string &desc) | |
TcpGeneralTest constructor. | |
~TcpGeneralTest () override | |
Public Member Functions inherited from ns3::TestCase | |
TestCase (const TestCase &)=delete | |
virtual | ~TestCase () |
Destructor. | |
std::string | GetName () const |
TestCase & | operator= (const TestCase &)=delete |
Protected Member Functions | |
void | ConfigureEnvironment () override |
Change the configuration of the environment. | |
Ptr< ErrorModel > | CreateReceiverErrorModel () override |
Create and return the error model to install in the receiver node. | |
Ptr< TcpSocketMsgBase > | CreateReceiverSocket (Ptr< Node > node) override |
Create and install the socket to install on the receiver. | |
Protected Member Functions inherited from ns3::TcpGeneralTest | |
virtual void | AfterRTOExpired (const Ptr< const TcpSocketState > tcb, SocketWho who) |
Rto has expired. | |
virtual void | BeforeRTOExpired (const Ptr< const TcpSocketState > tcb, SocketWho who) |
Rto has expired. | |
virtual void | BytesInFlightTrace (uint32_t oldValue, uint32_t newValue) |
Bytes in flight changes. | |
virtual void | ConfigureProperties () |
Change the configuration of the socket properties. | |
virtual void | CongStateTrace (const TcpSocketState::TcpCongState_t oldValue, const TcpSocketState::TcpCongState_t newValue) |
State on Ack state machine changes. | |
virtual Ptr< SimpleChannel > | CreateChannel () |
Create and return the channel installed between the two socket. | |
virtual Ptr< ErrorModel > | CreateSenderErrorModel () |
Create and return the error model to install in the sender node. | |
virtual Ptr< TcpSocketMsgBase > | CreateSenderSocket (Ptr< Node > node) |
Create and install the socket to install on the sender. | |
virtual Ptr< TcpSocketMsgBase > | CreateSocket (Ptr< Node > node, TypeId socketType, TypeId congControl) |
Create a socket. | |
virtual Ptr< TcpSocketMsgBase > | CreateSocket (Ptr< Node > node, TypeId socketType, TypeId congControl, TypeId recoveryAlgorithm) |
Create a socket. | |
virtual void | CWndInflTrace (uint32_t oldValue, uint32_t newValue) |
Tracks the inflated congestion window changes. | |
virtual void | CWndTrace (uint32_t oldValue, uint32_t newValue) |
Tracks the congestion window changes. | |
virtual void | DataSent (uint32_t size, SocketWho who) |
Notifying application for sent data. | |
void | DoConnect () |
Scheduled at 0.0, SENDER starts the connection to RECEIVER. | |
void | DoRun () override |
Execute the tcp test. | |
void | DoTeardown () override |
Teardown the TCP test. | |
virtual void | ErrorClose (SocketWho who) |
Socket closed with an error. | |
virtual void | FinalChecks () |
Performs the (eventual) final checks through test asserts. | |
Time | GetClockGranularity (SocketWho who) |
Get the clock granularity attribute. | |
Time | GetConnTimeout (SocketWho who) |
Get the retransmission time for the SYN segments. | |
uint32_t | GetDelAckCount (SocketWho who) |
Get the number of delayed ack (if present) | |
Time | GetDelAckTimeout (SocketWho who) |
Get the timeout of delayed ack (if present) | |
uint32_t | GetDupAckCount (SocketWho who) |
Get the number of dupack received. | |
SequenceNumber32 | GetHighestTxMark (SocketWho who) |
Get the highest tx mark of the node specified. | |
uint32_t | GetInitialCwnd (SocketWho who) |
Get the initial congestion window. | |
uint32_t | GetInitialSsThresh (SocketWho who) |
Get the initial slow start threshold. | |
Time | GetMinRto (SocketWho who) |
Get the minimum RTO attribute. | |
uint32_t | GetMtu () const |
Get the MTU of the environment. | |
EventId | GetPersistentEvent (SocketWho who) |
Get the persistent event of the selected socket. | |
Time | GetPersistentTimeout (SocketWho who) |
Get the persistent timeout of the selected socket. | |
uint32_t | GetPktCount () const |
Get the number of application packets. | |
Time | GetPktInterval () const |
Get the interval to wait for each packet sent down from application to TCP. | |
uint32_t | GetPktSize () const |
Get the application packet size. | |
Time | GetPropagationDelay () const |
Get the channel Propagation Delay. | |
Ptr< TcpSocketMsgBase > | GetReceiverSocket () |
Get the pointer to a previously created receiver socket. | |
uint32_t | GetReTxThreshold (SocketWho who) |
Get the retransmission threshold. | |
Time | GetRto (SocketWho who) |
Get the retransmission time. | |
Ptr< RttEstimator > | GetRttEstimator (SocketWho who) |
Get the Rtt estimator of the socket. | |
uint32_t | GetRWnd (SocketWho who) |
Get the rWnd of the selected socket. | |
Ptr< TcpRxBuffer > | GetRxBuffer (SocketWho who) |
Get the Rx buffer from selected socket. | |
uint32_t | GetSegSize (SocketWho who) |
Get the segment size of the node specified. | |
Ptr< TcpSocketMsgBase > | GetSenderSocket () |
Get the pointer to a previously created sender socket. | |
Time | GetStartTime () const |
Get the data start time. | |
Ptr< TcpSocketState > | GetTcb (SocketWho who) |
Get the TCB from selected socket. | |
TcpSocket::TcpStates_t | GetTcpState (SocketWho who) |
Get the state of the TCP state machine. | |
Ptr< TcpTxBuffer > | GetTxBuffer (SocketWho who) |
Get the Tx buffer from selected socket. | |
virtual void | HighestTxSeqTrace (SequenceNumber32 oldValue, SequenceNumber32 newValue) |
Highest tx seq changes. | |
virtual void | NextTxSeqTrace (SequenceNumber32 oldValue, SequenceNumber32 newValue) |
Next tx seq changes. | |
virtual void | NormalClose (SocketWho who) |
Socket closed normally. | |
virtual void | PhyDrop (SocketWho who) |
Link drop. | |
virtual void | ProcessedAck (const Ptr< const TcpSocketState > tcb, const TcpHeader &h, SocketWho who) |
Processed ack. | |
virtual void | QueueDrop (SocketWho who) |
Drop on the queue. | |
virtual void | RateSampleUpdatedTrace (const TcpRateLinux::TcpRateSample &sample) |
Track the rate sample value of TcpRateLinux. | |
virtual void | RateUpdatedTrace (const TcpRateLinux::TcpRateConnection &rate) |
Track the rate value of TcpRateLinux. | |
virtual void | RcvAck (const Ptr< const TcpSocketState > tcb, const TcpHeader &h, SocketWho who) |
Received ack. | |
virtual void | ReceivePacket (Ptr< Socket > socket) |
Packet received. | |
virtual void | RtoTrace (Time oldValue, Time newValue) |
RTO changes. | |
virtual void | RttTrace (Time oldTime, Time newTime) |
Rtt changes. | |
virtual void | Rx (const Ptr< const Packet > p, const TcpHeader &h, SocketWho who) |
Packet received from IP layer. | |
void | SendPacket (Ptr< Socket > socket, uint32_t pktSize, uint32_t pktCount, Time pktInterval) |
Send packets to other endpoint. | |
void | SetAppPktCount (uint32_t pktCount) |
Set app packet count. | |
void | SetAppPktInterval (Time pktInterval) |
Interval between app-generated packet. | |
void | SetAppPktSize (uint32_t pktSize) |
Set app packet size. | |
void | SetCongestionControl (TypeId congControl) |
Congestion control of the sender socket. | |
void | SetDelAckMaxCount (SocketWho who, uint32_t count) |
Forcefully set the delayed acknowledgement count. | |
void | SetInitialCwnd (SocketWho who, uint32_t initialCwnd) |
Forcefully set the initial cwnd. | |
void | SetInitialSsThresh (SocketWho who, uint32_t initialSsThresh) |
Forcefully set the initial ssthresh. | |
void | SetMTU (uint32_t mtu) |
MTU of the bottleneck link. | |
void | SetPaceInitialWindow (SocketWho who, bool paceWindow) |
Enable or disable pacing of the initial window. | |
void | SetPacingStatus (SocketWho who, bool pacing) |
Enable or disable pacing in the TCP socket. | |
void | SetPropagationDelay (Time propDelay) |
Propagation delay of the bottleneck link. | |
void | SetRcvBufSize (SocketWho who, uint32_t size) |
Forcefully set a defined size for rx buffer. | |
void | SetRecoveryAlgorithm (TypeId recovery) |
recovery algorithm of the sender socket | |
void | SetSegmentSize (SocketWho who, uint32_t segmentSize) |
Forcefully set the segment size. | |
void | SetTransmitStart (Time startTime) |
Set the initial time at which the application sends the first data packet. | |
void | SetUseEcn (SocketWho who, TcpSocketState::UseEcn_t useEcn) |
Forcefully set the ECN mode of use. | |
virtual void | SsThreshTrace (uint32_t oldValue, uint32_t newValue) |
Slow start threshold changes. | |
virtual void | Tx (const Ptr< const Packet > p, const TcpHeader &h, SocketWho who) |
Packet transmitted down to IP layer. | |
virtual void | UpdatedRttHistory (const SequenceNumber32 &seq, uint32_t sz, bool isRetransmission, SocketWho who) |
Updated the Rtt history. | |
Protected Member Functions inherited from ns3::TestCase | |
TestCase (std::string name) | |
Constructor. | |
void | AddTestCase (TestCase *testCase, Duration duration=Duration::QUICK) |
Add an individual child TestCase to this test suite. | |
TestCase * | GetParent () const |
Get the parent of this TestCase. | |
bool | IsStatusFailure () const |
Check if any tests failed. | |
bool | IsStatusSuccess () const |
Check if all tests passed. | |
void | SetDataDir (std::string directory) |
Set the data directory where reference trace files can be found. | |
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. | |
bool | MustAssertOnFailure () const |
Check if this run should assert on failure. | |
bool | MustContinueOnFailure () const |
Check if this run should continue on failure. | |
std::string | CreateDataDirFilename (std::string filename) |
Construct the full path to a file in the data directory. | |
std::string | CreateTempDirFilename (std::string filename) |
Construct the full path to a file in a temporary directory. | |
Private Member Functions | |
void | InvalidAwndCb (uint16_t oldAwnd, uint16_t newAwnd) |
Callback called for the update of the awnd. | |
Private Attributes | |
double | m_lossRatio |
Loss ratio. | |
uint32_t | m_pktCount |
Pkt count. | |
uint32_t | m_pktSize |
Packet size. | |
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 class | Duration { QUICK = 1 , EXTENSIVE = 2 , TAKES_FOREVER = 3 } |
How long the test takes to execute. More... | |
Static Public Attributes inherited from ns3::TestCase | |
static constexpr auto | QUICK = Duration::QUICK |
Deprecated test duration simple enums. | |
static constexpr auto | EXTENSIVE = Duration::EXTENSIVE |
static constexpr auto | TAKES_FOREVER = Duration::TAKES_FOREVER |
Protected Attributes inherited from ns3::TcpGeneralTest | |
TypeId | m_congControlTypeId |
Congestion control. | |
TypeId | m_recoveryTypeId |
Recovery. | |
Test the new formula for calculating TCP's advertised window size.
In TcpSocketBase, the advertised window is now calculated as
m_tcb->m_rxBuffer->MaxRxSequence () - m_tcb->m_rxBuffer->NextRxSequence ()
instead of the previous
m_tcb->m_rxBuffer->MaxBufferSize ()
This change was introduced with regard to situations in which the receiving application does not read from the socket as fast as possible (see bug 2559 for details). This test ensures that no regression is introduced for other, "normal" cases.
TcpGeneralTest ensures via ReceivePacket () that incoming packets are quickly consumed by the application layer, simulating a fast-reading application. We can only reasonably compare the old and the new AWND computation in this case.
Definition at line 277 of file tcp-advertised-window-test.cc.
TcpAdvertisedWindowTest::TcpAdvertisedWindowTest | ( | const std::string & | desc, |
uint32_t | size, | ||
uint32_t | packets, | ||
double | lossRatio ) |
Constructor.
desc | description |
size | segment size |
packets | number of packets to send |
lossRatio | error ratio |
Definition at line 309 of file tcp-advertised-window-test.cc.
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overrideprotectedvirtual |
Change the configuration of the environment.
Reimplemented from ns3::TcpGeneralTest.
Definition at line 321 of file tcp-advertised-window-test.cc.
References ns3::TcpGeneralTest::ConfigureEnvironment(), m_pktCount, m_pktSize, ns3::MilliSeconds(), ns3::Seconds(), ns3::TcpGeneralTest::SetAppPktCount(), ns3::TcpGeneralTest::SetAppPktSize(), ns3::TcpGeneralTest::SetPropagationDelay(), and ns3::TcpGeneralTest::SetTransmitStart().
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overrideprotectedvirtual |
Create and return the error model to install in the receiver node.
Reimplemented from ns3::TcpGeneralTest.
Definition at line 345 of file tcp-advertised-window-test.cc.
References ns3::CreateObject(), and m_lossRatio.
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overrideprotectedvirtual |
Create and install the socket to install on the receiver.
node | receiver node pointer |
Reimplemented from ns3::TcpGeneralTest.
Definition at line 331 of file tcp-advertised-window-test.cc.
References ns3::TcpGeneralTest::CreateSocket(), ns3::DynamicCast(), TcpSocketAdvertisedWindowProxy::GetTypeId(), InvalidAwndCb(), ns3::TcpGeneralTest::m_congControlTypeId, ns3::MakeCallback(), and NS_LOG_FUNCTION.
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private |
Callback called for the update of the awnd.
oldAwnd | Old advertised window |
newAwnd | new value |
Definition at line 351 of file tcp-advertised-window-test.cc.
References NS_TEST_ASSERT_MSG_EQ.
Referenced by CreateReceiverSocket().
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private |
Loss ratio.
Definition at line 306 of file tcp-advertised-window-test.cc.
Referenced by CreateReceiverErrorModel().
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private |
Pkt count.
Definition at line 305 of file tcp-advertised-window-test.cc.
Referenced by ConfigureEnvironment().
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private |
Packet size.
Definition at line 304 of file tcp-advertised-window-test.cc.
Referenced by ConfigureEnvironment().