// 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:

// DHCP IP6 Message sender header file

// 

//

/**

 @file DHCPIP6MsgSender.h

*/

#ifndef DHCPIP6MSGSENDER_H

#define DHCPIP6MSGSENDER_H

#include "MsgSender.h"

const TInt KIP6RndMin = -KMicrosecondsInSecs / 1000;

const TInt KIP6RndMax = KMicrosecondsInSecs / 1000;

const TInt KIP6MaxSecs = 0xFF;

class CDHCPIP6MessageSender : public CMessageSender

	{

public:

	CDHCPIP6MessageSender( MMSListener* aMMSListener, RSocket& aSocket, TTime *aTaskStart, const TUint aFamily);

   void SetListener( MMSListener* aMMSListener );

   MMSListener* EventListener() const;

   void SetMaxRetryTimeout( TInt aSeconds );

   void SetMaxRetryCount( TInt aCount );

   void SetMaxRetryDuration( TInt aSeconds );

   void SetInitialRetryTimeout( TInt aSeconds );

   void SetFirstSendDelay( TInt aSeconds );

protected:

   virtual TBool SendingContinues() const;

   virtual TBool CalculateDelay();

protected:

   TDhcpRnd iXid;

   //the following values are stored in microsecods

   TInt iInitialRetryTimeout;  //initial timeout between two subsequent retransmission

   TInt iMaxRetryTimeout;  //max timeout between two subsequent retransmission

   TInt iMaxRetryCount;    //upper limit of the number of times to retransmit the message

   TInt iMaxRetryDuration; //upper limit of the time to retransmit the message

                           //if iMaxRetryDuration == MAX_INT than the retransmission ends

                           //when RT > MRT || RC > MRC

   TInt iFirstSendDelay;

	};

inline CDHCPIP6MessageSender::CDHCPIP6MessageSender( MMSListener* aMMSListener, RSocket& aSocket, TTime *aTaskStartedAtCopy, const TUint aFamily) :

      CMessageSender( aMMSListener, aSocket, aTaskStartedAtCopy, aFamily ),

      iMaxRetryTimeout( static_cast<TInt>(KWaitForResponseTime) ),

      iMaxRetryCount( INT_MAX ),

      iMaxRetryDuration( INT_MAX )

      {

      }

#endif