/*

* Copyright (c) 2003 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 _TELENET_ENGINE_H_

#define _TELENET_ENGINE_H_

#include <telsess.h>

#include "TELFSM.H"

class CTelnetResolver;

class CAtiveWriter;

class CActiveReader;

class CIOControl;

class CReadTrigger;

class MIONotifier;

class CProto;

const int KPortReadBufferSize = 128;

const int KClientReadBufferSize = 512;

NONSHARABLE_CLASS(CTelnetControl) : public CBase , public MTelnetResolver, public MIONotifier , public MProtoEvent

/**

@internalComponent

*/

	{

public:

	CTelnetControl();

	~CTelnetControl();

	static CTelnetControl* NewL(const TTelnetConfig& aConfig,MTelnetNotification* aTelnetNotification);

	void ConstructL(const TTelnetConfig& aConfig,MTelnetNotification* aTelnetNotification);

	void Reset();

	TInt Connect(const TDesC& aServerName, TUint aPort);

	TInt Connect(const TInetAddr& aInetAddr, TUint aPort);

	TInt SetOption(const TInt aOption);

	TInt SetConfig(const TTelnetConfig& aConfig);

	TInt OptionStatus(TOptionStatus& aStatus);

	TInt Disconnect();

	TInt Read();

	TInt Write(const TDesC8& aBuffer);

	TInt Write(TTelnetUserControl& aControlCode);

	// MTelnetResolver

	void ResolverConnectedL();

	void ResolverDisconnected();

	void ResolverError(TInt aError);

	// MIONotification

  	void WriteComplete(); 

	void WriteError(TInt aError);

	void ReadCompleteL();

	void ReadComplete(TInt aError);

	void Event(TInt aEvent, TInt aEventCode);

	// MProtoEvent

	void ProtoError(TInt aError);

	void ProtoEvent();

private:

	// For passing data to the client app

	TBuf8<KClientReadBufferSize>	iClientReadBuffer;

	// Passed to IO control for receiving data from the server

	TBuf8<KPortReadBufferSize>		iPortReadBuffer;

	TBool					iClientWriteOutstanding;

    MTelnetNotification*	iTelnetNotification;

	CTelnetResolver*		iTelnetResolver;

	CActiveWriter*			iPortWriter;

	CActiveReader*			iPortReader;

	CIOBufferControl*		iPortIOControl;

	CProto*					iProto;

	};

#endif