Header used by web browsing applications to transmit information about content type, content length and timestamps for delay statistics. More...

#include "three-gpp-http-header.h"

Inheritance diagram for ns3::ThreeGppHttpHeader:

Collaboration diagram for ns3::ThreeGppHttpHeader:

Public Types
enum	ContentType_t { NOT_SET , MAIN_OBJECT , EMBEDDED_OBJECT }
	The possible types of content (default = NOT_SET). More...

Public Member Functions
	ThreeGppHttpHeader ()
	Creates an empty instance.

uint32_t	Deserialize (Buffer::Iterator start) override

Time	GetClientTs () const

uint32_t	GetContentLength () const

ContentType_t	GetContentType () const

TypeId	GetInstanceTypeId () const override
	Get the most derived TypeId for this Object.

uint32_t	GetSerializedSize () const override

Time	GetServerTs () const

void	Print (std::ostream &os) const override

void	Serialize (Buffer::Iterator start) const override

void	SetClientTs (Time clientTs)

void	SetContentLength (uint32_t contentLength)

void	SetContentType (ContentType_t contentType)

void	SetServerTs (Time serverTs)

std::string	ToString () const

Public Member Functions inherited from ns3::Header
	~Header () override

virtual uint32_t	Deserialize (Buffer::Iterator start, Buffer::Iterator end)
	Deserialize the object from a buffer iterator.

Public Member Functions inherited from ns3::ObjectBase
virtual	~ObjectBase ()
	Virtual destructor.

void	GetAttribute (std::string name, AttributeValue &value, bool permissive=false) const
	Get the value of an attribute, raising fatal errors if unsuccessful.

bool	GetAttributeFailSafe (std::string name, AttributeValue &value) const
	Get the value of an attribute without raising errors.

void	SetAttribute (std::string name, const AttributeValue &value)
	Set a single attribute, raising fatal errors if unsuccessful.

bool	SetAttributeFailSafe (std::string name, const AttributeValue &value)
	Set a single attribute without raising errors.

bool	TraceConnect (std::string name, std::string context, const CallbackBase &cb)
	Connect a TraceSource to a Callback with a context.

bool	TraceConnectWithoutContext (std::string name, const CallbackBase &cb)
	Connect a TraceSource to a Callback without a context.

bool	TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)
	Disconnect from a TraceSource a Callback previously connected with a context.

bool	TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)
	Disconnect from a TraceSource a Callback previously connected without a context.

Static Public Member Functions
static TypeId	GetTypeId ()
	Returns the object TypeId.

Static Public Member Functions inherited from ns3::Header
static TypeId	GetTypeId ()
	Get the type ID.

Static Public Member Functions inherited from ns3::Chunk
static TypeId	GetTypeId ()
	Get the type ID.

Static Public Member Functions inherited from ns3::ObjectBase
static TypeId	GetTypeId ()
	Get the type ID.

Private Attributes
uint64_t	m_clientTs
	" Client time stamp field (in time step unit).

uint32_t	m_contentLength
	" Content length field (in bytes unit).

uint16_t	m_contentType
	" Content type field in integer format.

uint64_t	m_serverTs
	" Server time stamp field (in time step unit).

Additional Inherited Members
Protected Member Functions inherited from ns3::ObjectBase
void	ConstructSelf (const AttributeConstructionList &attributes)
	Complete construction of ObjectBase; invoked by derived classes.

virtual void	NotifyConstructionCompleted ()
	Notifier called once the ObjectBase is fully constructed.

Related Symbols inherited from ns3::ObjectBase
static TypeId	GetObjectIid ()
	Ensure the TypeId for ObjectBase gets fully configured to anchor the inheritance tree properly.

Detailed Description

Header used by web browsing applications to transmit information about content type, content length and timestamps for delay statistics.

The header contains the following fields (and their respective size when serialized):

content type (2 bytes);
content length (4 bytes);
client time stamp (8 bytes); and
server time stamp (8 bytes).

The header is attached to every packet transmitted by ThreeGppHttpClient and ThreeGppHttpServer applications. In received, split packets, only the first packet of transmitted object contains the header, which helps to identify how many bytes are left to be received.

The last 2 fields allow the applications to compute the propagation delay of each packet. The client TS field indicates the time when the request packet is sent by the ThreeGppHttpClient, while the server TS field indicates the time when the response packet is sent by the ThreeGppHttpServer.

Definition at line 43 of file three-gpp-http-header.h.

Member Enumeration Documentation

◆ ContentType_t

enum ns3::ThreeGppHttpHeader::ContentType_t

The possible types of content (default = NOT_SET).

Enumerator
NOT_SET	Integer equivalent = 0.
MAIN_OBJECT	Integer equivalent = 1.
EMBEDDED_OBJECT	Integer equivalent = 2.

Definition at line 70 of file three-gpp-http-header.h.

Constructor & Destructor Documentation

◆ ThreeGppHttpHeader()

ns3::ThreeGppHttpHeader::ThreeGppHttpHeader ( )

Creates an empty instance.

Definition at line 24 of file three-gpp-http-header.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

◆ Deserialize()

uint32_t ns3::ThreeGppHttpHeader::Deserialize ( Buffer::Iterator start )

overridevirtual

Parameters

start an iterator which points to where the header should read from.

Returns: the number of bytes read.

This method is used by Packet::RemoveHeader to re-create a header from the byte buffer of a packet. The data read is expected to match bit-for-bit the representation of this header in real networks.

Note that data is not actually removed from the buffer to which the iterator points. Both Packet::RemoveHeader() and Packet::PeekHeader() call Deserialize(), but only the RemoveHeader() has additional statements to remove the header bytes from the underlying buffer and associated metadata.

Implements ns3::Header.

Definition at line 66 of file three-gpp-http-header.cc.

References m_clientTs, m_contentLength, m_contentType, m_serverTs, and NS_LOG_FUNCTION.

◆ GetClientTs()

Time ns3::ThreeGppHttpHeader::GetClientTs ( ) const

Returns: The client time stamp.

Definition at line 172 of file three-gpp-http-header.cc.

References m_clientTs.

Referenced by ThreeGppHttpObjectTestCase::ClientRxEmbeddedObjectCallback(), ThreeGppHttpObjectTestCase::ClientRxMainObjectCallback(), ns3::ThreeGppHttpClient::Receive(), ns3::ThreeGppHttpServer::ReceivedDataCallback(), ns3::ThreeGppHttpServer::ServeFromTxBuffer(), and ThreeGppHttpObjectTestCase::ServerRxCallback().

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◆ GetContentLength()

uint32_t ns3::ThreeGppHttpHeader::GetContentLength ( ) const

Returns: The content length (in bytes).

Definition at line 159 of file three-gpp-http-header.cc.

References m_contentLength.

Referenced by ClientEmbeddedObjectReceived(), ClientMainObjectReceived(), ThreeGppHttpObjectTestCase::ClientRxEmbeddedObjectCallback(), ThreeGppHttpObjectTestCase::ClientRxMainObjectCallback(), and ns3::ThreeGppHttpClient::Receive().

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◆ GetContentType()

ThreeGppHttpHeader::ContentType_t ns3::ThreeGppHttpHeader::GetContentType ( ) const

Returns: The content type.

Definition at line 130 of file three-gpp-http-header.cc.

References EMBEDDED_OBJECT, m_contentType, MAIN_OBJECT, NOT_SET, and NS_FATAL_ERROR.

Referenced by ClientEmbeddedObjectReceived(), ClientMainObjectReceived(), ThreeGppHttpObjectTestCase::ClientRxEmbeddedObjectCallback(), ThreeGppHttpObjectTestCase::ClientRxMainObjectCallback(), and ns3::ThreeGppHttpServer::ReceivedDataCallback().

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◆ GetInstanceTypeId()

TypeId ns3::ThreeGppHttpHeader::GetInstanceTypeId ( ) const

overridevirtual

Get the most derived TypeId for this Object.

This method is typically implemented by ns3::Object::GetInstanceTypeId but some classes which derive from ns3::ObjectBase directly have to implement it themselves.

Returns: The TypeId associated to the most-derived type of this instance.

Implements ns3::ObjectBase.

Definition at line 44 of file three-gpp-http-header.cc.

References GetTypeId().

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◆ GetSerializedSize()

uint32_t ns3::ThreeGppHttpHeader::GetSerializedSize ( ) const

overridevirtual

Returns: the expected size of the header.

This method is used by Packet::AddHeader to store a header into the byte buffer of a packet. This method should return the number of bytes which are needed to store the full header data by Serialize.

Implements ns3::Header.

Definition at line 50 of file three-gpp-http-header.cc.

Referenced by ns3::ThreeGppHttpServer::ServeFromTxBuffer().

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◆ GetServerTs()

Time ns3::ThreeGppHttpHeader::GetServerTs ( ) const

Returns: The server time stamp.

Definition at line 185 of file three-gpp-http-header.cc.

References m_serverTs.

Referenced by ThreeGppHttpObjectTestCase::ClientRxEmbeddedObjectCallback(), ThreeGppHttpObjectTestCase::ClientRxMainObjectCallback(), and ns3::ThreeGppHttpClient::Receive().

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◆ GetTypeId()

TypeId ns3::ThreeGppHttpHeader::GetTypeId ( )

static

Returns the object TypeId.

Returns: The object TypeId.

Definition at line 36 of file three-gpp-http-header.cc.

References ns3::TypeId::SetParent().

Referenced by GetInstanceTypeId().

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◆ Print()

void ns3::ThreeGppHttpHeader::Print ( std::ostream & os ) const

overridevirtual

Parameters

os output stream This method is used by Packet::Print to print the content of a header as ascii data to a c++ output stream. Although the header is free to format its output as it wishes, it is recommended to follow a few rules to integrate with the packet pretty printer: start with flags, small field values located between a pair of parens. Values should be separated by whitespace. Follow the parens with the important fields, separated by whitespace. i.e.: (field1 val1 field2 val2 field3 val3) field4 val4 field5 val5

Implements ns3::Header.

Definition at line 91 of file three-gpp-http-header.cc.

References m_clientTs, m_contentLength, m_contentType, m_serverTs, NS_LOG_FUNCTION, and ns3::Time::S.

Referenced by ToString().

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◆ Serialize()

void ns3::ThreeGppHttpHeader::Serialize ( Buffer::Iterator start ) const

overridevirtual

Parameters

start an iterator which points to where the header should be written.

This method is used by Packet::AddHeader to store a header into the byte buffer of a packet. The data written is expected to match bit-for-bit the representation of this header in a real network.

Implements ns3::Header.

Definition at line 56 of file three-gpp-http-header.cc.

References m_clientTs, m_contentLength, m_contentType, m_serverTs, and NS_LOG_FUNCTION.

◆ SetClientTs()

void ns3::ThreeGppHttpHeader::SetClientTs ( Time clientTs )

Parameters

clientTs The client time stamp.

Definition at line 165 of file three-gpp-http-header.cc.

References ns3::Time::As(), ns3::Time::GetTimeStep(), m_clientTs, NS_LOG_FUNCTION, and ns3::Time::S.

Referenced by ns3::ThreeGppHttpClient::RequestEmbeddedObject(), ns3::ThreeGppHttpClient::RequestMainObject(), and ns3::ThreeGppHttpServer::ServeFromTxBuffer().

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◆ SetContentLength()

void ns3::ThreeGppHttpHeader::SetContentLength ( uint32_t contentLength )

Parameters

contentLength The content length (in bytes).

Definition at line 152 of file three-gpp-http-header.cc.

References m_contentLength, and NS_LOG_FUNCTION.

Referenced by ns3::ThreeGppHttpClient::RequestEmbeddedObject(), ns3::ThreeGppHttpClient::RequestMainObject(), and ns3::ThreeGppHttpServer::ServeFromTxBuffer().

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◆ SetContentType()

void ns3::ThreeGppHttpHeader::SetContentType ( ThreeGppHttpHeader::ContentType_t contentType )

Parameters

contentType The content type.

Definition at line 109 of file three-gpp-http-header.cc.

References EMBEDDED_OBJECT, m_contentType, MAIN_OBJECT, NOT_SET, NS_FATAL_ERROR, and NS_LOG_FUNCTION.

Referenced by ns3::ThreeGppHttpClient::RequestEmbeddedObject(), ns3::ThreeGppHttpClient::RequestMainObject(), and ns3::ThreeGppHttpServer::ServeFromTxBuffer().

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◆ SetServerTs()

void ns3::ThreeGppHttpHeader::SetServerTs ( Time serverTs )

Parameters

serverTs The server time stamp.

Definition at line 178 of file three-gpp-http-header.cc.

References ns3::Time::As(), ns3::Time::GetTimeStep(), m_serverTs, NS_LOG_FUNCTION, and ns3::Time::S.

Referenced by ns3::ThreeGppHttpServer::ServeFromTxBuffer().

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◆ ToString()

std::string ns3::ThreeGppHttpHeader::ToString ( ) const

Returns: The string representation of the header.

Definition at line 100 of file three-gpp-http-header.cc.

References NS_LOG_FUNCTION, and Print().

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Member Data Documentation

◆ m_clientTs

uint64_t ns3::ThreeGppHttpHeader::m_clientTs

private

" Client time stamp field (in time step unit).

Definition at line 120 of file three-gpp-http-header.h.

Referenced by Deserialize(), GetClientTs(), Print(), Serialize(), and SetClientTs().

◆ m_contentLength

uint32_t ns3::ThreeGppHttpHeader::m_contentLength

private

" Content length field (in bytes unit).

Definition at line 119 of file three-gpp-http-header.h.

Referenced by Deserialize(), GetContentLength(), Print(), Serialize(), and SetContentLength().

◆ m_contentType

uint16_t ns3::ThreeGppHttpHeader::m_contentType

private

" Content type field in integer format.

Definition at line 118 of file three-gpp-http-header.h.

Referenced by Deserialize(), GetContentType(), Print(), Serialize(), and SetContentType().

◆ m_serverTs

uint64_t ns3::ThreeGppHttpHeader::m_serverTs

private

" Server time stamp field (in time step unit).

Definition at line 121 of file three-gpp-http-header.h.

Referenced by Deserialize(), GetServerTs(), Print(), Serialize(), and SetServerTs().

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

src/applications/model/three-gpp-http-header.h
src/applications/model/three-gpp-http-header.cc

Public Types

Public Member Functions

Static Public Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ ContentType_t

Constructor & Destructor Documentation

◆ ThreeGppHttpHeader()

Member Function Documentation

◆ Deserialize()

◆ GetClientTs()

◆ GetContentLength()

◆ GetContentType()

◆ GetInstanceTypeId()

◆ GetSerializedSize()

◆ GetServerTs()

◆ GetTypeId()

◆ Print()

◆ Serialize()

◆ SetClientTs()

◆ SetContentLength()

◆ SetContentType()

◆ SetServerTs()

◆ ToString()

Member Data Documentation

◆ m_clientTs

◆ m_contentLength

◆ m_contentType

◆ m_serverTs