// Copyright (c) 2002-2010 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:

// Implements the active object that controls the Write() requests. 

// 

//

/**

 @file

*/

#include "OstTraceDefinitions.h"

#ifdef OST_TRACE_COMPILER_IN_USE

#include "SenderTraces.h"

#endif

#include "Sender.h"

#include "Constants.h"

#include <es_ini.h>

CSender::CSender(CBcaIoController& aObserver, TInt aMaxPacketSise)

/**

 * Constructor. Performs standard active object initialisation.

 * @param aObserver Reference to the observer of this state machine

 */

	: CActive(EPriorityUserInput), 

	  iObserver(aObserver),

	  iMaxPacketSize(aMaxPacketSise)

	{

    // EPriorityUserInput is higher than the default priority but lower than

    // EPriorityHigh which is used on Receiving (DL having priority), however,

    // we want this to be handled in an expedited manner compared to other

    // active objects in the thread.

	CActiveScheduler::Add(this);

	}

CSender* CSender::NewL(CBcaIoController& aObserver, TInt aMaxPacketSise)

/**

 * Two-phase constructor. Creates a new CBcaIoController object, performs 

 * second-phase construction, then returns it.

 *

 * @param aObserver The observer, to which events will be reported

 * @return A newly constructed CBcaIoController object

 */

	{

	CSender* self = new (ELeave) CSender(aObserver, aMaxPacketSise);

	CleanupStack::PushL(self);

	self->ConstructL();

	CleanupStack::Pop(self);

	return self;

	}

void CSender::ConstructL()

/**

 * Second-phase constructor. Creates all the state objects it owns.

 */

	{

	OstTraceDef0(OST_TRACE_CATEGORY_DEBUG, TRACE_INTERNALS, CSENDER_CONSTRUCTL_1, "CSender::ConstructL");

	iSendBuffer.CreateL(iMaxPacketSize);

	}

CSender::~CSender()

/**

 * Destructor.

 */

void CSender::RunL()

/**

 * This method checks if any error occured in the write operation.  

 */

	{

	OstTraceDef1(OST_TRACE_CATEGORY_DEBUG, TRACE_INTERNALS, CSENDER_RUNL_1, "CSender::RunL [iStatus=%d]", iStatus.Int());

	if (iStatus!=KErrNone)

		{

		if(iStatus == KErrNoMemory)

			{

			OstTraceDef0(OST_TRACE_CATEGORY_DEBUG, TRACE_INTERNALS, CSENDER_RUNL_2, "WARNING! CSender: Write failed with KErrNoMemory");

			OstTraceDef0(OST_TRACE_CATEGORY_DEBUG, TRACE_INTERNALS, CSENDER_RUNL_3, "WARNING! CSender: Ignoring packet!!!!");

			// Write operation failed!! Nif will ignore this packet.

			iObserver.SendComplete();

			}

		else if (iStatus == KErrNotReady)

			{

			OstTraceDef0(OST_TRACE_CATEGORY_DEBUG, TRACE_INTERNALS, CSENDER_RUNL_4, "WARNING! CSender: Write failed with KErrNotReady");

			OstTraceDef0(OST_TRACE_CATEGORY_DEBUG, TRACE_INTERNALS, CSENDER_RUNL_5, "WARNING! CSender: Ignoring packet!!!!");

			// Write operation failed!! Nif will ignore this packet.

			iObserver.SendComplete();

			}

		else

			{

			OstTraceDef0(OST_TRACE_CATEGORY_DEBUG, TRACE_INTERNALS, CSENDER_RUNL_6, "ERROR! CSender: Write failed!!!!");

			// Nif will shut down

			iObserver.Stop(iStatus.Int());

			}

		return;

		}

	else

		{

		// The Ip packet was sent successfuly

		OstTraceDef0(OST_TRACE_CATEGORY_DEBUG, TRACE_INTERNALS, CSENDER_RUNL_7, "***** CSender: Packet Sent.");

		iObserver.SendComplete();

		}

	}

void CSender::DoCancel()

/**

 *	Cancel active request

 */

	{

	OstTraceDef0(OST_TRACE_CATEGORY_DEBUG, TRACE_INTERNALS, CSENDER_DOCANCEL_1, "CSender::DoCancel");

	(iObserver.Bca())->CancelWrite(); 

	}

void CSender::Send(RMBufChain& aPdu)

/**

 * Copies the specified RMBufChain into a descriptor and sends it.

 *

 * @param aPdu The IP packet to be sent.

 * @return KStopSending, or KErrArgument if the packet is too large.

 */

	{

	OstTraceDef0(OST_TRACE_CATEGORY_DEBUG, TRACE_INTERNALS, CSENDER_SEND_1, "CSender::Send");

	// Copy the IP portion of the RMBufChain to the buffer.

	iSendBuffer.SetMax();

	aPdu.CopyOut(iSendBuffer, aPdu.First()->Length());

#ifdef RAWIP_HEADER_APPENDED_TO_PACKETS

	iObserver.AddHeader(iSendBuffer);

#endif // RAWIP_HEADER_APPENDED_TO_PACKETS

	aPdu.Free();

	(iObserver.Bca())->Write(iStatus, iSendBuffer);

	SetActive();

	}