TcpEndPointBug2211Test Class Reference

Test for bug 2211. More...

Inheritance diagram for TcpEndPointBug2211Test:

Collaboration diagram for TcpEndPointBug2211Test:

Public Member Functions
	TcpEndPointBug2211Test (std::string desc, bool ipVersion)
	Constructor.
void	DoRun () override
	Implementation to actually run this TestCase.
void	HandleAccept (Ptr< Socket > s, const Address &from)
	Handle an incoming connection.
void	HandleConnect (Ptr< Socket > socket)
	Handle a connection establishment.
void	Recv (Ptr< Socket > socket)
	Receive a packet.
Public Member Functions inherited from ns3::TestCase
	TestCase (const TestCase &)=delete
virtual	~TestCase ()
	Destructor.
std::string	GetName () const
TestCase &	operator= (const TestCase &)=delete

Private Attributes
bool	m_v6
	True to use IPv6.

Additional Inherited Members
Public Types inherited from ns3::TestCase
enum class	Duration { QUICK = 1 , EXTENSIVE = 2 , TAKES_FOREVER = 3 }
	How long the test takes to execute. More...
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.

Detailed Description

Test for bug 2211.

https://www.nsnam.org/bugzilla/show_bug.cgi?id=2211

NOTE: It is a valgrind testcase, it contains no ASSERTs.

Test creates one node and sets up two TCP sockets on the loopback with default parameters: CWND = 1, MTU = 536. Sender socket sends 3 segments. When first segment is acknowledged, cwnd is raised to 2. Then, two segments are sent and arrive into receive buffer. Until bugfix, the following happened: Ipv4EndPoint::ForwardUp was called for both second and third segment. These calls scheduled two Ipv4EndPoint::DoForwardUp events. To demonstrate the bug, test case closes the receiver socket after receiving the second segment. As a result, Ipv4EndPoint is destroyed. However, Ipv4EndPoint::DoForwardUp is already scheduled for third segment. It is a use-after-free bug.

Definition at line 39 of file tcp-endpoint-bug2211.cc.

Constructor & Destructor Documentation

TcpEndPointBug2211Test()

TcpEndPointBug2211Test::TcpEndPointBug2211Test	(	std::string	desc,
		bool	ipVersion )

Constructor.

Parameters

desc	Test description.
ipVersion	True to use IPv6.

Definition at line 95 of file tcp-endpoint-bug2211.cc.

References ns3::TestCase::TestCase(), and m_v6.

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Member Function Documentation

DoRun()

void TcpEndPointBug2211Test::DoRun ( )

overridevirtual

Implementation to actually run this TestCase.

Subclasses should override this method to conduct their tests.

Implements ns3::TestCase.

Definition at line 102 of file tcp-endpoint-bug2211.cc.

References ns3::CreateObject(), ns3::Socket::CreateSocket(), ns3::Simulator::Destroy(), ns3::Ipv4Address::GetAny(), ns3::Ipv6Address::GetAny(), ns3::Ipv4Address::GetLoopback(), ns3::Ipv6Address::GetLoopback(), ns3::TcpSocketFactory::GetTypeId(), HandleAccept(), HandleConnect(), m_v6, ns3::MakeCallback(), ns3::MakeNullCallback(), ns3::Simulator::Run(), and sink.

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HandleAccept()

void TcpEndPointBug2211Test::HandleAccept	(	Ptr< Socket >	s,
		const Address &	from )

Handle an incoming connection.

Parameters

s	The receiving socket.
from	The other node IP address.

Definition at line 81 of file tcp-endpoint-bug2211.cc.

References ns3::MakeCallback(), and Recv().

Referenced by DoRun().

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HandleConnect()

void TcpEndPointBug2211Test::HandleConnect

(

Ptr< Socket >

socket

)

Handle a connection establishment.

Parameters

socket

The receiving socket.

Definition at line 87 of file tcp-endpoint-bug2211.cc.

References ns3::Create().

Referenced by DoRun().

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Recv()

void TcpEndPointBug2211Test::Recv

(

Ptr< Socket >

socket

)

Receive a packet.

Parameters

socket

The receiving socket.

Definition at line 72 of file tcp-endpoint-bug2211.cc.

Referenced by HandleAccept().

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Member Data Documentation

m_v6

bool TcpEndPointBug2211Test::m_v6

private

True to use IPv6.

Definition at line 68 of file tcp-endpoint-bug2211.cc.

Referenced by TcpEndPointBug2211Test(), and DoRun().

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

• src/internet/test/tcp-endpoint-bug2211.cc