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CUpnpHttpFileTransferReader Class Reference

class CUpnpHttpFileTransferReader : public CActive

CUpnpHttpFileTransferReader is responsible for asynchronous reading. Reader starta reading in asynchronous mode. Issues reading and then waits for the operation to be completed. When it is completed then received data is forwarded to upper layer - CUpnpTcpSession and the new read operation is issues. This continues in loop until the Cancel() is invoked or object is destroyed. DLNAWebServer.lib

Since: Series60 3.2

Inherits from

CUpnpHttpFileTransferReader
- CActive
  - CBase

Public Member Functions
	~CUpnpHttpFileTransferReader ()
TBool	Activated ()
void	AppendL (const TDesC8 &)
TInt	CalculateBufferSize ( TInt , TInt )
void	CancelTimers ()
CUpnpHttpFileTransferReader *	NewL ( CUpnpTcpSession &, RSocket &, TThreadPriority , TInt , TInt )
void	Reset ()
void	SetActivated ( TBool )
void	StartL ()

Protected Member Functions
	CUpnpHttpFileTransferReader ( CUpnpTcpSession &, RSocket &, TThreadPriority , TInt , TInt )
TInt	AvailableSpace ()
void	BaseConstructL ()
void	DoCancel ()
void	Finish ()
void	HandleError ()
TBool	HandleL ()
void	HandleOneBufferShortTransferL ()
void	InitiateBufferL ()
void	IssueRead ()
TInt	ReadBufferSize ()
void	ReadFromSocket ()
TInt	RemainingBytes ()
TInt	RunError ( TInt )
void	RunL ()
void	StartCancelTimer ()
TInt	TcpFinFoundRemainingBytes ()
void	TimerEventL ( CUpnpNotifyTimer *)

Inherited Functions
	CActive::CActive(TInt)
	CActive::Cancel()
	CActive::Deque()
	CActive::Extension_(TUint,TAny &,TAny )
	CActive::IsActive()const
	CActive::IsAdded()const
	CActive::Priority()const
	CActive::SetActive()
	CActive::SetPriority(TInt)
	CActive::~CActive()
	CBase::CBase()
	CBase::Delete(CBase *)
	CBase::operator new(TUint)
	CBase::operator new(TUint,TAny *)
	CBase::operator new(TUint,TLeave)
	CBase::operator new(TUint,TLeave,TUint)
	CBase::operator new(TUint,TUint)
	CBase::~CBase()

Inherited Enumerations
	CActive:TPriority

Protected Attributes
TInt	iBufferSize
RBuf8	iCacheBuffer
TBool	iCancelFromTimer
CUpnpNotifyTimer *	iCancelTimer
TBool	iIsActivated
TInt	iIsFinished
TSockXfrLength	iLen
TInt	iReadBufferSize
TPtr8	iReceivePtr
TInt	iRetryErrorCount
CUpnpNotifyTimer *	iRetryTimer
CUpnpTcpSession &	iSession
RSocket &	iSocket

Inherited Attributes
	CActive::iStatus

Constructor & Destructor Documentation

CUpnpHttpFileTransferReader(CUpnpTcpSession &, RSocket &, TThreadPriority, TInt, TInt)

CUpnpHttpFileTransferReader	(	CUpnpTcpSession &	aSession,
		RSocket &	aSocket,
		TThreadPriority	aPriority,
		TInt	aReadPortion,
		TInt	aBufferSize
	)	[protected]

CUpnpHttpFileTransferReader constructor.

Since: Series60 3.2

Parameters

CUpnpTcpSession & aSession	session that runs and supervises reader.
RSocket & aSocket	socket from which data will be read.
TThreadPriority aPriority	priority with which the reader will be working.
TInt aReadPortion	- size of the buffer to read from the socket
TInt aBufferSize	- the buffer size

~CUpnpHttpFileTransferReader()

~CUpnpHttpFileTransferReader

(

)

[virtual]

Virtual destructor.

Since: Series60 3.2

Member Functions Documentation

Activated()

TBool

Activated

(

)

Checks if the reader is started meaning in use

Since: Series60 3.2

AppendL(const TDesC8 &)

void

AppendL

(

const TDesC8 &

aBeginning

)

Appends first portion of data to the buffer.

Since: Series60 3.2

Parameters

const TDesC8 & aBeginning

AvailableSpace()

TInt

AvailableSpace

(

)

[protected]

Returns how many bytes will still fit into the buffer

Since: Series60 3.2

BaseConstructL()

void

BaseConstructL

(

)

[protected]

Base constructor to be used also in derived classes.

Since: Series60 3.2

CalculateBufferSize(TInt, TInt)

TInt	CalculateBufferSize	(	TInt	aReadPortion,
			TInt	aBufferSize
		)	[static]

Calculates the buffer size as exponent of 2 and proper for read portions

Since: Series60 3.2

Parameters

TInt aReadPortion
TInt aBufferSize

CancelTimers()

void

CancelTimers

(

)

Cancel the timers

Since: Series60 3.2

DoCancel()

void

DoCancel

(

)

[protected, virtual]

Cancels issued reading request. Standard active object function

Since: Series60 3.2

Finish()

void

Finish

(

)

[protected, virtual]

Finish the session

Since: Series60 3.2

HandleError()

void

HandleError

(

)

[protected]

Handles leave from RunL

Since: Series60 3.2

HandleL()

TBool

HandleL

(

)

[protected, virtual]

Handles buffer of data

Since: Series60 3.2

HandleOneBufferShortTransferL()

void

HandleOneBufferShortTransferL

(

)

[protected]

If content length is less than single buffer size transaction is completed and session is closed

Since: Series60 3.2

InitiateBufferL()

void

InitiateBufferL

(

)

[protected]

Initiates the buffer

Since: Series60 3.2

IssueRead()

void

IssueRead

(

)

[protected]

Issues reading in asynchronous mode.

Since: Series60 3.2

NewL(CUpnpTcpSession &, RSocket &, TThreadPriority, TInt, TInt)

CUpnpHttpFileTransferReader *	NewL	(	CUpnpTcpSession &	aSession,
			RSocket &	aSocket,
			TThreadPriority	aPriority,
			TInt	aReadPortion,
			TInt	aBufferSize
		)	[static]

CUpnpHttpFileTransferReader factory method.

Since: Series60 3.2

Parameters

CUpnpTcpSession & aSession	session that runs and supervises reader.
RSocket & aSocket	socket from which data will be read.
TThreadPriority aPriority	priority with which the reader will be working.
TInt aReadPortion	- size of the buffer to read from the socket
TInt aBufferSize	- the buffer size

ReadBufferSize()

TInt

ReadBufferSize

(

)

[protected, virtual]

Remaing number of bytes to read.

Since: Series60 3.2

ReadFromSocket()

void

ReadFromSocket

(

)

[protected, virtual]

Reads from socket

Since: Series60 3.2

RemainingBytes()

TInt

RemainingBytes

(

)

[protected, virtual]

Remaing number of bytes to read.

Since: Series60 3.2

Reset()

void

Reset

(

)

[virtual]

Resets some member values to start reading data

Since: Series60 3.2

RunError(TInt)

TInt

RunError

(

TInt

aError

)

[protected, virtual]

Trap RunL leaves Standard active object function

Since: Series60 3.2

Parameters

TInt aError

RunL()

void

RunL

(

)

[protected, virtual]

Function called when the read request is finished. Standard active object function

Since: Series60 3.2

SetActivated(TBool)

void

SetActivated

(

TBool

aValue

)

Sets the state of the reader to activated

Since: Series60 3.2

Parameters

TBool aValue

StartCancelTimer()

void

StartCancelTimer

(

)

[protected]

Starts the cancel timer.

Since: Series60 3.2

StartL()

void

StartL

(

)

[virtual]

Starts reading in asynchronous mode.

Since: Series60 3.2

TcpFinFoundRemainingBytes()

TInt

TcpFinFoundRemainingBytes

(

)

[protected]

Returns bytes to be read unless FIN received, then returns 0

Since: Series60 3.2

TimerEventL(CUpnpNotifyTimer *)

void

TimerEventL

(

CUpnpNotifyTimer *

)

[protected]

Callback function for timer expirations.

Since: Series60 2.6

Parameters

CUpnpNotifyTimer *

Timer that has expired.

Member Data Documentation

TInt iBufferSize

TInt

iBufferSize

[protected]

RBuf8 iCacheBuffer

RBuf8

iCacheBuffer

[protected]

TBool iCancelFromTimer

TBool

iCancelFromTimer

[protected]

Variable indicating when the cancel was called from cancel timer.

CUpnpNotifyTimer * iCancelTimer

CUpnpNotifyTimer *

iCancelTimer

[protected]

Timer used for cancel reciving process.

TBool iIsActivated

TBool

iIsActivated

[protected]

TInt iIsFinished

TInt

iIsFinished

[protected]

TSockXfrLength iLen

TSockXfrLength

iLen

[protected]

TInt iReadBufferSize

TInt

iReadBufferSize

[protected]

TPtr8 iReceivePtr

TPtr8

iReceivePtr

[protected]

TInt iRetryErrorCount

TInt

iRetryErrorCount

[protected]

Count of reading errors.

CUpnpNotifyTimer * iRetryTimer

CUpnpNotifyTimer *

iRetryTimer

[protected]

Timer used for retry process.

CUpnpTcpSession & iSession

CUpnpTcpSession &

iSession

[protected]

RSocket & iSocket

RSocket &

iSocket

[protected]