// Copyright (c) 1999-2009 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:

// Defines the L2CAP Channel Config class

// 

//

#ifndef L2CAPCHANNELCONFIG_H

#define L2CAPCHANNELCONFIG_H

#include <bt_sock.h>

#include <bttypes.h>

#include "L2types.h"

#include "L2CapFecNegotiator.h"

#include "l2capEntityConfig.h"

#include "l2capSigPacketConfigure.h"

// Forward declarations

class TL2CAPEntityConfig;

class HConfigureRequest;

class HConfigureResponse;

class RMBufChain;

#ifndef __UNITTest__

	class CL2CapSAPSignalHandler;

#else

	class CL2CapConfigProxy;

#endif

NONSHARABLE_CLASS(CL2CapChannelConfig) : public CBase

	{

public:

	enum TChannelConfigStatus

		{

		EChannelConfigOutstanding,

		EChannelConfigComplete,

		EChannelConfigFailed,

		};

	// Configuration constants

	const static TUint16 KMinOutgoingFlushTimeout = TL2CapConfig::EMinDataObsolescenceTimeout; //min physically possible

	~CL2CapChannelConfig();

	static CL2CapChannelConfig* NewL(CL2CapSAPSignalHandler& aSAPSignalHandler);

	TInt HandleConfigRequest(HConfigureRequest& aConfigRequest, RMBufChain& aUnknownOptions);

	TInt HandleConfigResponse(HConfigureResponse& aConfigResponse, RMBufChain& aUnknownOptions);

	// This does the actual handling and sends a response to a whole Config Request "transaction",

	// so that segmented config requests are correctly handled.

	TInt ConfigRequestComplete(TBool aConfigRequestSent, TConfigResponseResult& aResult);

	void CloneChannelConfig(const CL2CapChannelConfig& aCL2CapChannelConfig);

	TInt UpdateLocalConfigWithEntityCapabilities();

	TInt UpdateConfigAPIChange(const TL2CapConfig& aAPIConfig, TBool& aOnTheAirReconfigRequired);

	void RegisterL2CapEntityConfig(TL2CAPEntityConfig& aL2CapEntityConfig);

	void DetachChannelConfig();

	inline TBool IsPeerInfoDefined();

	TChannelConfigStatus LocalConfigurationStatus() const;

	TInt GetChannelMode(TL2CapChannelMode& aMode) const;

	// Accessors for configuration options.

	inline TL2CapConfigurationOptionGroup<TMTUOption>& IncomingMTU() const;

	inline TL2CapConfigurationOptionGroup<TMTUOption>& OutgoingMTU() const;

	inline TL2CapConfigurationOptionGroup<TFlushTimeoutDurationOption>& IncomingFlushTimeout() const;

	inline TL2CapConfigurationOptionGroup<TFlushTimeoutDurationOption>& OutgoingFlushTimeout() const;

	inline TL2CapConfigurationOptionGroup<TQualityOfServiceOption>& IncomingQOS() const;

	inline TL2CapConfigurationOptionGroup<TQualityOfServiceOption>& OutgoingQOS() const;

	inline TL2CapFecNegotiator& FecNegotiator();

	inline const TL2CapFecNegotiator& FecNegotiator() const;

private:

#ifndef __UNITTest__

	CL2CapChannelConfig(CL2CapSAPSignalHandler& aSAPSignalHandler);

#else

	CL2CapChannelConfig(CL2CapConfigProxy& aSAPSignalHandler);

#endif	

	void ConstructL();

	TBool GenerateFecOptions(const TL2CapEntityInfo& aPeerEntityConfig);

	TInt UpdateReliability(const TL2CapConfig& aApiConfig);

	TInt UpdateMtuMru(const TL2CapConfig& aApiConfig, TBool& aOnTheAirReconfigRequired);

private:

	// Configuration members.

	// MTU / MRU

	TL2CapConfigurationOptionGroup<TMTUOption>* iIncomingMTU;

	TL2CapConfigurationOptionGroup<TMTUOption>* iOutgoingMTU;

	// Incoming and outgoing Flush timers.

	TL2CapConfigurationOptionGroup<TFlushTimeoutDurationOption>* iIncomingFlushTimeoutDuration;

	TL2CapConfigurationOptionGroup<TFlushTimeoutDurationOption>* iOutgoingFlushTimeoutDuration;

	// Incoming and outgoing QoS

	TL2CapConfigurationOptionGroup<TQualityOfServiceOption>* iIncomingQOS;

	TL2CapConfigurationOptionGroup<TQualityOfServiceOption>* iOutgoingQOS;

	// Incoming and outgoing FEC

	TL2CapFecNegotiator iFecNegotiator;

#ifndef	 __UNITTest__

	CL2CapSAPSignalHandler& 	iSAPSignalHandler;

#else

	CL2CapConfigProxy& 			iSAPSignalHandler;

#endif

	TL2CAPEntityConfig*	 		iL2CapEntityConfig;  // Non-owned.

	TL2CapConfig::TChannelReliability		iRequestedChannelReliability;

	TBool									iLegacyModesDisallowed;

	TUint16									iRequestedFlushTimeout;

	TUint16									iRequestedRetransmissionTimeout;

	// Thanks to the possibility of segmented ConfigRequests, we need

	// this to collect all the options as Config Request segments flow in.

	// Then once the whole ConfigRequest transaction is received, we process this.

	TL2CapConfigParamOptions				iReceivedConfigRequestOptions;

	};

// Accessors for configuration options.

inline TL2CapConfigurationOptionGroup<TMTUOption>& CL2CapChannelConfig::IncomingMTU() const

	{

	return *iIncomingMTU;

	}

inline TL2CapConfigurationOptionGroup<TMTUOption>& CL2CapChannelConfig::OutgoingMTU() const

	{

	return *iOutgoingMTU;

	}

inline TL2CapConfigurationOptionGroup<TFlushTimeoutDurationOption>& CL2CapChannelConfig::IncomingFlushTimeout() const

	{

	return *iIncomingFlushTimeoutDuration;

	}

inline TL2CapConfigurationOptionGroup<TFlushTimeoutDurationOption>& CL2CapChannelConfig::OutgoingFlushTimeout() const

	{

	return *iOutgoingFlushTimeoutDuration;

	}

inline TL2CapConfigurationOptionGroup<TQualityOfServiceOption>& CL2CapChannelConfig::IncomingQOS() const

	{

	return *iIncomingQOS;

	}

inline TL2CapConfigurationOptionGroup<TQualityOfServiceOption>& CL2CapChannelConfig::OutgoingQOS() const

	{

	return *iOutgoingQOS;

	}

inline TL2CapFecNegotiator& CL2CapChannelConfig::FecNegotiator()

	{

	return iFecNegotiator;

	}

inline const TL2CapFecNegotiator& CL2CapChannelConfig::FecNegotiator() const

    {

    return iFecNegotiator;

    }

inline TBool CL2CapChannelConfig::IsPeerInfoDefined()

	{

	return iL2CapEntityConfig && iL2CapEntityConfig->PeerInfoDefined();

	}

#endif