// Copyright (c) 2004-2009 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:

//

#ifndef L2CAPSIGPACKETECHO_H

#define L2CAPSIGPACKETECHO_H

#include "l2capCommand.h"

// Interface class used when discovering the originator of the

// Echo Request Command.

class MEchoResponseHandler

	{

public:

	virtual void EchoResponseReceived(const TDesC8* aData) = 0;

	};

NONSHARABLE_CLASS(HEchoRequest) : public HL2CapCommand

	{

public:

	static HEchoRequest* New(RMBufChain& aData,

		  	                 TUint8 aRTXTimerDuration = KDefaultRTXTimerDuration,

	                         TUint16 aERTXTimerDuration = KDefaultERTXTimerDuration);

	static HEchoRequest* New(TUint8 aRTXTimerDuration = KDefaultRTXTimerDuration,

	                         TUint16 aERTXTimerDuration = KDefaultERTXTimerDuration);

	static TInt NewCommandIfValid(RMBufChain& aBuffer, HL2CapCommand*& aCommand);

	~HEchoRequest();

	TBool ProcessCommand(CL2CapSignalHandler& aSignalHandler);

	TInt GetData(RMBufChain& aData) const;

	inline void SetEchoResponseHandler(MEchoResponseHandler& aHandler);

	inline void RemoveEchoResponseHandler();

	inline MEchoResponseHandler* EchoResponseHandler() const;

public:

	const static TUint8 KEchoRequestEmptyLength		= 4;

private:

	HEchoRequest(RMBufChain& aCommand,

                 TUint8 aRTXTimerDuration = KDefaultRTXTimerDuration,

	             TUint16 aERTXTimerDuration = KDefaultERTXTimerDuration);

private:

	const static TUint8 KDataOffset					= 4;

private:		

	MEchoResponseHandler* iEchoResponseHandler;

	};

inline void HEchoRequest::SetEchoResponseHandler(MEchoResponseHandler& aHandler)

	{

	iEchoResponseHandler = &aHandler;

	}

inline void HEchoRequest::RemoveEchoResponseHandler()

	{

	// The echo response handler no longer wishes to be informed

	// when the response arrives.

	iEchoResponseHandler = NULL;

	}

inline MEchoResponseHandler* HEchoRequest::EchoResponseHandler() const

	{

	return iEchoResponseHandler;

	}

NONSHARABLE_CLASS(HEchoResponse) : public HL2CapCommand

	{

public:

	static HEchoResponse* New(TUint8 aId);

	static HEchoResponse* New(RMBufChain& aData, TUint8 aId);

	static TInt NewCommandIfValid(RMBufChain& aBuffer, HL2CapCommand*& aCommand);

	~HEchoResponse();

	TBool ProcessCommand(CL2CapSignalHandler& aSignalHandler);

	TInt GetData(RMBufChain& aData) const;

private:

	HEchoResponse(RMBufChain& aCommand);

private:

	const static TUint8 KEchoResponseEmptyLength	= 4;

	const static TUint8 KDataOffset					= 4;

	};

#endif