/*

* Copyright (c) 2003-2009 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:

* Name        : TTCPMsgState.h

* Part of     : ConnectionMgr

* Version     : SIP/4.0

*

*/

/**

 @internalComponent

*/

#ifndef __TTCPMSGSTATE_H__

#define __TTCPMSGSTATE_H__

// INCLUDES

#include <e32base.h>

// FORWARD DECLARATIONS

class MMsgAssemblerContext;

/*

 * Base class for all TCP message states.

 */

class TTCPMsgState 

	{

public:

	virtual ~TTCPMsgState() {};

protected:

	TTCPMsgState(MMsgAssemblerContext& aMsgAssembler);

public:

	virtual void DataReceivedL( TPtr8 aData, TUint& aNextLength ) = 0;

protected:

   /**

    * find first sip message start position from the parameter data,

    * 

    * @param aData TCP messages data received.

    * @return sip message header start postion if it could be found,

    *         otherwise KErrNotFound. 

    */

    TInt FindHeaderStartPosition( TDesC8& aData ); 

   /**

    * find first sip message end position from the parameter data,

    * 

    * @param aData TCP messages data received.

    * @return sip message header end postion if it could be found,

    *         otherwise KErrNotFound. 

    */

    TInt FindHeaderEndPosition( TDesC8& aData );  

   /** get header end position by compare it with the new header end

	* position currentlly found.

	*/

	void GetHeaderPartEndPosition ( TInt  aEndMarkPosition, 

		                            TInt  aEndMarkLength,  

		                            TInt& aHeaderEndPosition );         

protected:

    MMsgAssemblerContext& iMsgAssembler;

#ifdef CPPUNIT_TEST

    friend class CTCPMsgStatesTest;

#endif

	};

#endif // end of __TTCPMSGSTATE_H__

// end of file