RSubConnection Class Reference

#include <es_sock.h>

Link against: esock.lib

class RSubConnection : public RCommsSubSession

Inherits from

RSubConnection
- RCommsSubSession
  - RSubSessionBase

Nested Classes and Structures

RSubConnection::TEventFilter

Public Member Enumerations
enum	TSubConnType { EAttachToDefault, ECreateNew, EWaitIncoming }

Public Member Functions
	RSubConnection()
IMPORT_C void	Add(RSocket &, TRequestStatus &)
IMPORT_C void	CancelEventNotification()
IMPORT_C void	Close()
IMPORT_C TInt	Control(TUint, TUint, TDes8 &)
IMPORT_C void	EventNotification(TNotificationEventBuf &, TBool, TRequestStatus &)
IMPORT_C void	EventNotification(TNotificationEventBuf &, TEventFilter, TUint, TRequestStatus &)
IMPORT_C TInt	GetParameters(RSubConParameterBundle &)
IMPORT_C TInt	GetParameters(RParameterFamilyBundle &)
IMPORT_C TInt	Open(RSocketServ &, TSubConnType, RConnection &)
IMPORT_C void	Remove(RSocket &, TRequestStatus &)
TBool	SameSession(TInt)
IMPORT_C TInt	SetParameters(const RSubConParameterBundle &)
IMPORT_C TInt	SetParameters(const RParameterFamilyBundle &)
IMPORT_C void	Start(TRequestStatus &)
IMPORT_C TInt	Start()
IMPORT_C TInt	Stop()

Inherited Functions
	RSubSessionBase::CloseSubSession(TInt)
	RSubSessionBase::CreateAutoCloseSubSession(RSessionBase &,TInt,const TIpcArgs &)
	RSubSessionBase::CreateSubSession(const RSessionBase &,TInt)
	RSubSessionBase::CreateSubSession(const RSessionBase &,TInt,const TIpcArgs &)
	RSubSessionBase::RSubSessionBase()
	RSubSessionBase::Send(TInt)const
	RSubSessionBase::Send(TInt,const TIpcArgs &)const
	RSubSessionBase::SendReceive(TInt)const
	RSubSessionBase::SendReceive(TInt,TRequestStatus &)const
	RSubSessionBase::SendReceive(TInt,const TIpcArgs &)const
	RSubSessionBase::SendReceive(TInt,const TIpcArgs &,TRequestStatus &)const
	RSubSessionBase::Session()const
	RSubSessionBase::SubSessionHandle()const

Detailed Description

A Sub-Connection, a channel within a Connection. A representation of a channel between this device and remote devices with which we are communicating. This channel will be used by one or more sockets. Depending on the state of the channel, it may not be possible to bind arbitary sockets into it. Attempts to bind sockets from different protocol families to a single channel is an error, as each channel can only be used by one protocol family.

Note:

The sub-connection can represent a end-to-end channel and/or a channel from this device to an intermediate device (e.g an access server such as a GGSN which using UMTS and PDP contexts. Properties can be specified simultaneously on protocol and link level.)

Before using any of these services, a connection to a socket server session must have been made and the connection must be open.

Since v9.0

Member Enumeration Documentation

Enum TSubConnType

Enumerator	Value	Description
EAttachToDefault
ECreateNew
EWaitIncoming

Constructor & Destructor Documentation

RSubConnection ( )

IMPORT_C

RSubConnection

(

)

Empty sub-connection handle constructor

Member Function Documentation

Add ( RSocket &, TRequestStatus & )

IMPORT_C void	Add	(	RSocket &	aSocket,
			TRequestStatus &	aStatus
		)

Associate a socket with a subconnection. The socket must already be using the same connection or the association attempt will fail. The completion of this method does not indicate that the socket is now running over the sub-connection, it only indicates that the association is complete and a negotiation has started to move the socket onto the subconnection. An event (via eventNotification) will be sent once the socket is running on the sub-connection.

Parameters
aSocket	Socket to be associated with the Sub-Connection
aStatus	Status to complete when socket has been added (or failed to add)

Return Value: KErrNone if successful, otherwise a system wide error

CancelEventNotification ( )

IMPORT_C void

CancelEventNotification

(

)

Cancel an outstanding Event Notification request

Close ( )

IMPORT_C void

(

)

Closes the sub-connection.

The sub-connection will not be dropped immediately: it will be dropped when there is no more data traffic on the sub-connection.

Control ( TUint, TUint, TDes8 & )

IMPORT_C TInt	Control	(	TUint	aOptionLevel,
			TUint	aOptionName,
			TDes8 &	aOption
		)

EventNotification ( TNotificationEventBuf &, TBool, TRequestStatus & )

IMPORT_C void	EventNotification	(	TNotificationEventBuf &	aEventBuffer,
			TBool	aGenericEventsOnly,
			TRequestStatus &	aStatus
		)

Requests asynchronous event notification for the sub-connection.

Parameters
aEventBuffer	A buffer to receive event notification.
aStatus	On return, the status of the request.

EventNotification ( TNotificationEventBuf &, TEventFilter, TUint, TRequestStatus & )

IMPORT_C void	EventNotification	(	TNotificationEventBuf &	aEventBuffer,
			TEventFilter	aEventFilterList,
			TUint	aEventListLength,
			TRequestStatus &	aStatus
		)

Requests asynchronous notification of a specific list of events for the sub-connection.

Parameters
aEventBuffer	A buffer to receive event notification.
aEventFilterList	list of event filters specifying a subset of events of interest.
aEventListLength	Length of the filter list provided
aStatus	On return, the status of the request.

GetParameters ( RSubConParameterBundle & )

IMPORT_C TInt

GetParameters

(

RSubConParameterBundle &

aParametersSet

)

Fetch the sub-connection's current parameters (Requested, Acceptable and Granted)

Parameters
aParametersSet	bundle of parameters to write the current parameters into

Return Value: KErrNone if successful, otherwise a system wide error

GetParameters ( RParameterFamilyBundle & )

IMPORT_C TInt

GetParameters

(

RParameterFamilyBundle &

aParametersSet

)

Fetch the sub-connection's current parameters (Requested, Acceptable and Granted)

Parameters
aParametersSet	bundle of parameters to write the current parameters into

Return Value: KErrNone if successful, otherwise a system wide error

Open ( RSocketServ &, TSubConnType, RConnection & )

IMPORT_C TInt	Open	(	RSocketServ &	aServer,
			TSubConnType	aSubConnType,
			RConnection &	aConnection
		)

Opens a new RSubConnection instance.

Parameters
aSubConnType	specifies the type of sub connection, the different available types are defined by TSubConnType.
aConnection	Parent Connection that is to be sub divided by this sub-connection

Return Value: KErrNone if successful, otherwise another of the system wide error codes.

Remove ( RSocket &, TRequestStatus & )

IMPORT_C void	Remove	(	RSocket &	aSocket,
			TRequestStatus &	aStatus
		)

Remove a socket from a subconnection. The socket will be moved back to the default sub-connection. The successful completion of this method does not indicate that the socket has moved back to the default sub-connection, it only indicates that the move negotiation has been successful. An event (via eventNotification) will be sent once the socket is running on the default sub-connection.

Parameters
aSocket	Socket to be removed from the Sub-Connection
aStatus	Status to complete when socket has been removed (or failed to remove)

Return Value: KErrNone if successful, otherwise a system wide error

SameSession ( TInt )

TBool

SameSession

(

TInt

aSessionHandle

)

Checks that the Session Handle passed is the same as that of this RSubConnection.

Use to verify the RSubConnection argument passed to the RSocket and RHostResolver Open(..., RSubConnection& aSubConnection) methods.

Parameters
aSessionHandle	The handle which is to be checked against that of this RSubConnection

Return Value: ETrue if handle is the same, else EFalse

SetParameters ( const RSubConParameterBundle & )

IMPORT_C TInt

SetParameters

(

const RSubConParameterBundle &

aParametersSet

)

Set Parameters of the sub-connection. Successful completion of this method only indicates that the negotiation has been successfully started. An event via eventNotification) will be sent once the granted parameters are available.

Parameters
aParametersSet	bundle of parameters to be applied to the sub-connection

Return Value: KErrNone if successful, otherwise a system wide error

SetParameters ( const RParameterFamilyBundle & )

IMPORT_C TInt

SetParameters

(

const RParameterFamilyBundle &

aParametersSet

)

Parameters
aParametersSet	bundle of parameters to be applied to the sub-connection

Return Value: KErrNone if successful, otherwise a system wide error

Start ( TRequestStatus & )

IMPORT_C void

Start

(

TRequestStatus &

aStatus

)

Unused

Start ( )

IMPORT_C TInt

Start

(

)

Unused

Stop ( )

IMPORT_C TInt

Stop

(

)

Unused