// 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:

//

#ifndef __CLWSPPDUHANDLER_H__

#define __CLWSPPDUHANDLER_H__

#include <e32std.h>

#include <wapmessage.h>

/** 

The connectionless WSP PDU type definition.

@internalComponent

*/

enum TWSPPduType

	{

	/** the Reply PDU type assignment 

	*/

	EReply			=0x04,

	/** the Push PDU type assignment 

	*/

	EPush			=0x06,

	/** the Get PDU type assignment 

	*/

	EGet			=0x40,

	/** the GetOption PDU type assignment 

	*/

	EGetOptions		=0x41,

	/** the Gethead PDU type assignment 

	*/

	EGetHead		=0x42,

	/** the GetDelete PDU type assignment 

	*/

	EGetDelete		=0x43,

	/** the GetTrace PDU type assignment 

	*/

	EGetTrace		=0x44,

	/** the Post PDU type assignment 

	*/

	EPost			=0x60,

	/** the PostPut PDU type assignment 

	*/

	EPostPut		=0x61

	};

	/** 

	The offset of the transactionID field in WSP PDU.

	@internalComponent

	 */

	const TUint KPDUHeaderTransactionIDOffSet	=0;

	/** 

	The offset of the WSP PDU type field in WSP PDU.

	@internalComponent

	 */

	const TUint KPDUHeaderWSPPDUTypeOffSet		=1;

	/** 

	The offset of WSP field.

	@internalComponent

	*/

	const TUint KPDUFieldOffset					=2;

	/** 

	The length of transactionID+PDUType

	@internalComponent

	*/

	const TUint8 KPDUTransactionIDAndPDUTypeLength	=2;

	/** 

	The length of WSP status

	@internalComponent

	*/

	const TUint8 KWSPStatusLength					=1;

	/**

	The mask of top 3 bits in varible length Unsigned integer

	@internalComponent

	*/

	const TUint8 KTop3BitSet		= 0x70;

	/**

	The mask to valide each byte in varible length Unsigned integer

	@internalComponent

	*/

	const TUint8 KWapQuote			= 0x7F;

	/**

	The mask of carry bit in each byte in varible length Unsigned integer

	@internalComponent

	*/

	const TUint8 KCarryBitMask		= 0x80;

	/**

	Maximum length for varible length Unsigned integer

	@internalComponent

	*/

	const TUint8 KMaxUintVarLength	= 5;

	/**

	shift 7 bits for each byte in Uint32

	@internalComponent

	*/

	const TUint8 KUIntVarOctetShift	= 7;

class CCLWSPPduHandler

/** 

The Connectionless WSP PDU Handler. This class provides a set of static interfaces 

for WAP message APIs to pack and unpack the WSP PDU.   

For error codes returned by methods in this class, see <wapmsgerr.h>.  Most methods can 

return a set of general errors, with some returning additional specific errors.

*/

	{

public: 

public: // Public Interfaces

	static void UnpackWSPPduL(HBufC8* aWSPPdu, TWSPPduType& aType, HBufC8*& aWSPHeader, HBufC8*& aBody, TUint8& aId, TWSPStatus& aStatus);

	static void PackWSPPduL(HBufC8*& aWSPPdu, TWSPPduType aType, const TDesC& aURI, const TDesC8& aWSPHeader, const TDesC8& aBody, const TUint8 aId);

private: // private methods

	static void UnpackPushPduL(HBufC8* aWSPPdu, HBufC8*& aWSPHeader, HBufC8*& aBody);

	static void UnpackReplyPduL(HBufC8* aWSPPdu, HBufC8*& aWSPHeader, HBufC8*& aBody, TWSPStatus& aStatus);

	static void PackPostPduL(HBufC8*& aWSPPdu, TWSPPduType aType, const TDesC& aURI, const TDesC8& aWSPHeader, const TDesC8& aBody, const TUint8 aId);

	static void PackGetPduL(HBufC8*& aWSPPdu, TWSPPduType aType, const TDesC& aURI, const TDesC8& aWSPHeader, const TUint8 aId);

	static TInt UintVar(TUint32& aVal, TPtrC8& aBuffer, TUint aOffset);

	static HBufC8* UintVarL(const TUint32 aInt);

	};

#endif // __CLWSPPDUHANDLER_H__