/*

* Copyright (c) 2004 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:    Provides a callback for re-keying events

*

*/

#ifndef __MSRTP_REKEYING_OBS_H__

#define __MSRTP_REKEYING_OBS_H__

#include "srtpmasterkey.h"

class CSRTPStream;

class CSRTPSession;

/**

* Provides a callback clients.

*/

class MSRTPReKeyingObserver

    {

    public:

       /**

        * This function is called by SRTP Stream initiated with 

        * MSRTPReKeyingObserver when a master key is stale and needs 

        * to be refreshed.  

        * Re-Key will be triggered when SRTP index is (2^48)-1 and

        * SRTCP index is (2^31)-1

        * @param aStream Stream which master key has to be refreshed

        */

        virtual void SRTPMasterKeyStaleEvent(const CSRTPStream& aStream)=0;

       /**

        * This function is called by SRTPSRTP Stream initiated with 

        * CSRTPSession  when a master key is stale and

        * needs to be refreshed. 

        * * @param aSession Session which master key has to be refreshed

        */

        virtual void SRTPMasterKeyStaleEvent(const CSRTPSession& aSession)=0;

    };

#endif // __MSRTP_REKEYING_OBS_H__