// 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:

// udp.h - UDP for IPv6/IPv4

// UDP Protocol and Provider declarations.

//

/**

 @file udp.h

 @internalComponent

*/

#ifndef __UDP_H__

#define __UDP_H__

#include "in_trans.h"

#include <udp_hdr.h>

#include <in_chk.h>

const TUint KUdpDefaultRecvBuf =  32768;  //< Default receive window size.

typedef TInet6Checksum<TInet6HeaderUDP> TInet6PacketUDP;

/**

UDP protocol implementation.

@internalComponent

*/

class CProtocolUDP6 : public CProtocolInet6Transport

	{

public:

	CProtocolUDP6();

	CProtocolUDP6& operator=(const CProtocolUDP6&);

	virtual ~CProtocolUDP6();

	virtual CServProviderBase *NewSAPL(TUint aProtocol);

	virtual void InitL(TDesC& aTag);

	virtual void StartL();

	virtual void Identify(TServerProtocolDesc *) const;

	//virtual TInt GetOption(TUint level,TUint name,TDes8 &option,CProtocolBase* aSourceProtocol=NULL);

	//virtual TInt SetOption(TUint level, TUint aName,const TDesC8 &option,CProtocolBase* aSourceProtocol=NULL);

	virtual TInt Send(RMBufChain& aPDU,CProtocolBase* aSourceProtocol=NULL);

	virtual void Process(RMBufChain& aPacket, CProtocolBase *aSourceProtocol = NULL);

	static void Describe(TServerProtocolDesc&);

	TUint RecvBuf() const           { return iRecvBuf; }

	TUint WaitNif() const           { return iWaitNif; }

private:

	// Global receive buffer setting read from udp_recv_buf. Can be overridden with socket option.

	TUint iRecvBuf;

	// Set if the sender should be blocked to wait for interface startup.

	TUint iWaitNif:1;

	};

/**

UDP SAP declaration.

@internalComponent

*/

class CProviderUDP6 : public CProviderInet6Transport

	{

	friend class CProtocolUDP6;

public:

	CProviderUDP6(CProtocolInet6Base* aProtocol);

	virtual ~CProviderUDP6();

	virtual void InitL();

	virtual TInt GetOption(TUint level,TUint name,TDes8 &anOption) const;

	virtual void Ioctl(TUint level,TUint name,TDes8* anOption);

	virtual void CancelIoctl(TUint aLevel, TUint aName);

	virtual TInt SetOption(TUint level,TUint name, const TDesC8 &anOption);

	//virtual void AutoBind() {}

	virtual TInt SetRemName(TSockAddr &aAddr);

	virtual void Shutdown(TCloseType option);

	virtual void Process(RMBufChain& aPacket, CProtocolBase *aSourceProtocol = NULL);

	virtual void Error(TInt aError, TUint aOperationMask = MSocketNotify::EErrorAllOperations);

	virtual void CanSend();

	// PRTv1.0 send and receive methods

	virtual void GetData(TDes8 &aDesc,TUint options,TSockAddr *aAddr=NULL);

	// PRTv1.5 send and receive methods

	virtual TInt GetData(RMBufChain& aData, TUint aLength, TUint aOptions, TSockAddr* anAddr=NULL);

private:

	virtual TInt DoWrite(RMBufSendPacket &aPacket, RMBufSendInfo &aInfo, TUint aOptions, TUint aOffset); 

	virtual TInt Recv(TDualBufPtr& aBuf, TUint aLength, TUint aOptions, TSockAddr* anAddr=NULL);

	CProtocolUDP6* Protocol() const { return (CProtocolUDP6*)iProtocol; }

	RMBufAllocator iBufAllocator;

	RMBufPktQ iSockInQ;				//< Queue for incoming packets.

	RMBufSendPacket iSockOutBuf;	//< Stores the last outgoing packet.

	TUint iSockOutOffset;			//< Offset to the UDP header in iSockOutBuf.

	TUint iSockInQLen;				//< Current input queue length in bytes.

	TUint iSockInBufSize;			//< Buffer size for storing inbound data.

	};

#endif