// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

// qoslib.h - This file defines the generic QoS API interface.

//

#ifndef __QOSLIB_H__

#define __QOSLIB_H__

/**

 * @file qoslib.h 

 * 

 * QoS API - This file defines the generic QoS API interface.

 */

#include <e32std.h>

#include <in_sock.h>

#include <networking/qos_extension.h>

#ifndef SYMBIAN_ENABLE_SPLIT_HEADERS

#include <networking/qoslib_internal.h>

#endif

class CQoSParameters;

class CPolicy;

/**

 * Selector for QoS policies. The variables defined in TQoSSelector are used to find QoS policies

 * for traffic flows. Not all variables have to be set, the application can specify the variables that it wants to.

 * Note: TQoSSelector stores IPv4 addresses in "IPv4-mapped IPv6 address" format.

 *

 * @publishedPartner

 * @released

 */

class TQoSSelector

{

public:

    /**

     * Constructor. Initialises all variables to unspecified values.

     */

    IMPORT_C TQoSSelector();

    /**

     * Compares if the selectors are equal.

     *

     * @param aSelector TQoSSelector object that is compared with this object.

     * @return ETrue if selectors are equal to this object, otherwise EFalse.

     */

    IMPORT_C TInt operator==(const TQoSSelector& aSelector) const;

    /**

     * Compares if the selector matches aSocket. 

     *

     * @param aSocket RSocket that is compared with this object.

     * @return ETrue if selector created from aSocket is equal to this object, otherwise EFalse.

     */

    IMPORT_C TBool Match(RSocket& aSocket) const;

    /**

     * Sets the addresses for selector.

     *

     * @param aSrcAddr Source address. Port must have value <= 65535 (0 is used as uspecified value for a port).

     * @param aSrcAddrMask Source address mask. Port must have value <= 65535 (0 is used as uspecified value for a port).

     * @param aDstAddr Destination address. Port must have value <= 65535 (0 is used as uspecified value for a port).

     * @param aDstAddrMask Destination address mask. Port must have value <= 65535 (0 is used as uspecified value for a port).

     * @param aProtocol Protocol id.

     * @param aSrcPortMax Maximum source port. Must have value <= 65535 (0 is used as uspecified value for a port).

     * @param aDstPortMax Maximum destination port. Must have value <= 65535 (0 is used as uspecified value for a port).

     * @return KErrNone if parameters have valid values, otherwise KErrArgument.

     */

    IMPORT_C TInt SetAddr(const TInetAddr& aSrcAddr, const TInetAddr& aSrcAddrMask, const TInetAddr& aDstAddr, const TInetAddr& aDstAddrMask, TUint aProtocol, TUint aSrcPortMax, TUint aDstPortMax);

    /**

     * Sets the addresses for selector. RSocket is used to fetch addresses and ports for a selector. The resulting

     * selector will match only for one socket. NOTE: RSocket::Connect() must be called before calling this method.

     *

     * @param aSocket RSocket object that is used to set the selector variables. Note: RSocket must be connected

     * @return KErrNone if parameters have valid values, otherwise KErrArgument.

     */

    IMPORT_C TInt SetAddr(RSocket& aSocket);

    /**

     * Sets the source address for selector.

     *

     * @param aAddr Source address. Port must have value <= 65535 (0 is used as uspecified value for a port).

     * @return KErrNone if parameters have valid values, otherwise KErrArgument.

     */

    IMPORT_C TInt SetSrc(const TInetAddr& aAddr);

    /**

     * Sets the destination address for selector.

     *

     * @param aAddr Source address. Port must have value <= 65535 (0 is used as uspecified value for a port).

     * @return KErrNone if parameters have valid values, otherwise KErrArgument.

     */

    IMPORT_C TInt SetDst(const TInetAddr& aAddr);

    /**

     * Returns the current source address.

     *

     * @return Source address.

     */

    IMPORT_C TInetAddr GetSrc() const;

    /**

     * Returns the current destination address.

     *

     * @return Destination address.

     */

    IMPORT_C TInetAddr GetDst() const;

    /**

     * Sets the source address mask.

     *

     * @param aMask Source address mask. Port must have value <= 65535 (0 is used as uspecified value for a port).

     * @return KErrNone if parameters have valid values, otherwise KErrArgument.

     */

    IMPORT_C TInt SetSrcMask(const TInetAddr& aMask);

    /**

     * Returns the current source address mask.

     *

     * @return Source address mask.

     */

    IMPORT_C TInetAddr GetSrcMask() const;

    /**

     * Sets the destination address mask.

     *

     * @param aMask Destination address mask. Port must have value <= 65535 (0 is used as uspecified value for a port).

     * @return KErrNone if parameters have valid values, otherwise KErrArgument.

     */

    IMPORT_C TInt SetDstMask(const TInetAddr& aMask);

    /**

     * Returns the current destination address mask.

     *

     * @return Destination address mask.

     */

    IMPORT_C TInetAddr GetDstMask() const;

    /**

     * Sets the Internet access point identifier. 0 is used as unspecified value.

     *

     * @param aIapId Value to which to set the IapId.

     */

    IMPORT_C void SetIapId(TInt aIapId);

    /**

     * Returns the current Internet access point identifier.

     *

     * @return Internet access point identifier.

     */

    IMPORT_C TInt IapId() const;

    /**

     * Sets the protocol identifier. 0 is used as unspecified value.

     *

     * @param aProtocol Value to which to set the protocol id.

     */

    IMPORT_C void SetProtocol(TUint aProtocol);

    /**

     * Returns the current protocol identifier.

     *

     * @return Protocol identifier.

     */

    IMPORT_C TUint Protocol() const;

    /**

     * Sets the maximum source port. Port must have value <= 65535 (0 is used as unspecified value).

     *

     * @param aMaxPort Value to which to set maximum source port.

     * @return KErrNone if aMaxPort has valid values, otherwise KErrArgument.

     */

    IMPORT_C TInt SetMaxPortSrc(TUint aMaxPort);

    /**

     * Sets the maximum destination port. Port must have value <= 65535 (0 is used as unspecified value).

     *

     * @param aMaxPort Value to which to set maximum destination port.

     * @return KErrNone if aMaxPort has valid values, otherwise KErrArgument.

     */

    IMPORT_C TInt SetMaxPortDst(TUint aMaxPort);

    /**

     * Returns the maximum source port.

     *

     * @return Maximum source port.

     */

    IMPORT_C TUint MaxPortSrc() const;

    /**

     * Returns the maximum destination port.

     *

     * @return Maximum destination port.

     */

    IMPORT_C TUint MaxPortDst() const;

private:

    /** The source address. */

    TInetAddr   iSrc;

    /** The destination address. */

    TInetAddr   iDst;

    /** The source address mask. */

    TInetAddr   iSrcMask;

    /** The destination address mask. */

    TInetAddr   iDstMask;

    /** The protocol ID. */

    TUint       iProtocol;

    /** The maximum source port. */

    TUint       iSrcPortMax;

    /** The maximum destination port. */

    TUint       iDstPortMax;

    /** The Internet access point identifier. */

    TUint       iIapId;

};

/**

* @name QoS capabilities. 

* 

* These are used to notify the application as to the type of QoS support provided.

* @publishedPartner

* @released

*/

//@{

/** End-to-end signalling is used, e.g. RSVP. */

const TUint KQoSSignaled            = 0x0001;

/** Signalling is used along some part of end-to-end path. */

const TUint KQoSPartiallySignaled   = 0x0002;

/** No signalling is used, e.g. DiffServ. */

const TUint KQoSProvisioned         = 0x0004;

//@}

/**

 * QoS event types

 * @publishedPartner

 * @released

 */

enum TQoSEvent

    {

    /** QoS request failed. */

    EQoSEventFailure=1,

    /** QoS request was successful. */

    EQoSEventConfirm,

    /** QoS parameters have changed. */

    EQoSEventAdapt,

    /** QoS channel is opened. */

    EQoSEventChannel,

    /** A socket is attached to a QoS channel. */

    EQoSEventJoin,

    /** A socket is detached from a QoS channel. */

    EQoSEventLeave,

    /** QoS policy was added to QoS policy database. */

    EQoSEventAddPolicy,

    /** QoS policy was searched from the QoS policy database. */

    EQoSEventGetPolicy,

    /** QoS policy was deleted. */

    EQoSEventDeletePolicy,

    /** QoS policy file was loaded. */

    EQoSEventLoadPolicyFile,

    /** QoS policy file was unloaded. */

    EQoSEventUnloadPolicyFile

    };

/**

 * Default mask for QoS events: all events are notified to the application.

 * @publishedPartner

 * @released

 */

const TUint KQoSEventAll = EQoSEventFailure | EQoSEventConfirm | EQoSEventAdapt | EQoSEventChannel | EQoSEventJoin | EQoSEventLeave | EQoSEventAddPolicy | EQoSEventGetPolicy | EQoSEventDeletePolicy | EQoSEventLoadPolicyFile | EQoSEventUnloadPolicyFile;

/**

 * Base class for QoS events.

 *

 * @publishedPartner

 * @released

 */

class CQoSEventBase : public CBase

{

public:

    /**

     * Constructor. Sets the QoS event type.

     *

     * @param aEventType QoS event type (values defined in enum TQoSEvent).

     */

    IMPORT_C CQoSEventBase(TInt aEventType);

    /**

     * Returns the QoS event type.

     *

     * @return QoS event type (values defined in enum TQoSEvent).

     */

    IMPORT_C TInt EventType() const;

private:

    /** The QoS event type. */

    TInt iEventType;

};

/**

 * Class for EQoSEventConfirm event whereby a QoS request was successful

 * 

 * @publishedPartner

 * @released

 */

class CQoSConfirmEvent : public CQoSEventBase

{

public:

    /**

     * Constructor. Sets the QoS parameters.

     *

     * @param aParameters QoS parameters.

     */

    IMPORT_C CQoSConfirmEvent(CQoSParameters& aParameters);

    /**

     * Returns the QoS parameters.

     *

     * @return QoS parameters.

     */

    IMPORT_C CQoSParameters* Parameters() const;

private:

    /** The address of the CQoSParameters parameter supplied during construction. */

    CQoSParameters* iParameters; 

};

/**

 * Class for EQoSEventFailure event whereby a QoS request failed

 *

 * @publishedPartner

 * @released

 */

class CQoSFailureEvent : public CQoSEventBase

{

public:

    /**

     * Constructor. Sets the QoS parameters and reason code.

     *

     * @param aParameters QoS parameters.

     * @param aReason Reason code specifies the success or failure of the request.

     */

    IMPORT_C CQoSFailureEvent(CQoSParameters& aParameters, TInt aReason);

    /**

     * Returns the QoS parameters.

     *

     * @return QoS parameters.

     */

    IMPORT_C CQoSParameters* Parameters() const;

    /**

     * Returns the reason code. Reason code specifies the success or failure of the request.

     *

     * @return Reason code.

     */

    IMPORT_C TInt Reason() const;

private:

    /** The address of the CQoSParameters parameter supplied during construction. */

    CQoSParameters* iParameters;

    /** The reason code that specifies the success or failure of the request. */

    TInt iReason;

};

/**

 * Class for EQoSEventAdapt event whereby the QoS parameters have changed

 *

 * @publishedPartner

 * @released

 */

class CQoSAdaptEvent : public CQoSEventBase

{

public:

    /**

     * Constructor. Sets the QoS parameters and reason code.

     *

     * @param aParameters QoS parameters.

     * @param aReason Reason code specifies the success or failure of the request.

     */

    IMPORT_C CQoSAdaptEvent(CQoSParameters& aParameters, TInt aReason);

    /**

     * Returns the QoS parameters.

     *

     * @return QoS parameters.

     */

    IMPORT_C CQoSParameters* Parameters() const;

    /**

     * Returns the reason code. Reason code specifies the success or failure of the request.

     *

     * @return Reason code.

     */

    IMPORT_C TInt Reason() const;

private:

    /** The address of the CQoSParameters parameter supplied during construction. */

    CQoSParameters* iParameters;

    /** The reason code that specifies the success or failure of the request. */

    TInt iReason;

};

/**

 * Class for EQoSEventChannel event whereby a QoS channel is opened

 *

 * @publishedPartner

 * @released

 */

class CQoSChannelEvent : public CQoSEventBase

{

public:

    /**

     * Constructor. Sets the QoS parameters and reason code.

     *

     * @param aParameters QoS parameters.

     * @param aReason Reason code specifies the success or failure of the request.

     */

    IMPORT_C CQoSChannelEvent(CQoSParameters* aParameters, TInt aReason);

    /**

     * Returns the QoS parameters.

     *

     * @return QoS parameters.

     */

    IMPORT_C CQoSParameters* Parameters() const;

    /**

     * Returns the reason code. Reason code specifies the success or failure of the request.

     *

     * @return Reason code. KErrNone if an existing channel was found, otherwise an error code.

     */

    IMPORT_C TInt Reason() const;

private:

    /** The address of the CQoSParameters parameter supplied during construction. */

    CQoSParameters* iParameters;

    /** The reason code that specifies the success or failure of the request. */

    TInt iReason;

};

/**

 * Class for EQoSEventJoin event whereby a socket is attached to a QoS channel

 *

 * @publishedPartner

 * @released

 */

class CQoSJoinEvent : public CQoSEventBase

{

public:

    /**

     * Constructor. Sets the selector and reason code. Selector specifies the socket 

     * that was attached to the QoS channel.

     *

     * @param aSelector Selector specifies the socket that was attached to the QoS channel.

     * @param aReason Reason code specifies the success or failure of the request.

     */

    IMPORT_C CQoSJoinEvent(const TQoSSelector& aSelector, TInt aReason);

    /**

     * Returns the selector that was attached to the QoS channel.

     *

     * @return Selector that was attached to the QoS channel.

     */

    IMPORT_C const TQoSSelector& Selector() const;

    /**

     * Returns the reason code. Reason code specifies the success or failure of the request.

     *

     * @return Reason code.

     */

    IMPORT_C TInt Reason() const;

private:

    /** The selector that specifies the socket that was attached to the QoS channel. */

    TQoSSelector iSelector;

    /** The reason code that specifies the success or failure of the request. */

    TInt iReason;

};

/**

 * Class for EQoSEventLeave event whereby a socket is detached from a QoS channel

 *

 * @publishedPartner

 * @released

 */

class CQoSLeaveEvent : public CQoSEventBase

{

public:

    /**

     * Constructor. Sets the selector and reason code. Selector specifies the socket 

     * that was detached from the QoS channel.

     *

     * @param aSelector Selector specifies the socket that was detached from the QoS channel.

     * @param aReason Reason code specifies the success or failure of the request.

     */

    IMPORT_C CQoSLeaveEvent(const TQoSSelector& aSelector, TInt aReason);

    /**

     * Returns the selector that was detached from the QoS channel.

     *

     * @return Selector that was detached from the QoS channel.

     */

    IMPORT_C const TQoSSelector& Selector() const;

    /**

     * Returns the reason code. Reason code specifies the success or failure of the request.

     *

     * @return Reason code.

     */

    IMPORT_C TInt Reason() const;

private:

    /** The QoS channel selector. */

    TQoSSelector iSelector;

    /** The reason code that specifies the success or failure of the request. */