// 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:

// exain.cpp - Inbound plugin example module

//

#include "exain.h"

#pragma warning (disable:4100)

//

// Applies all the modifications needed for every incoming ICMP packet

//

TInt CProtocolExain::ApplyL(RMBufHookPacket& /*aPacket*/, RMBufRecvInfo& aInfo)

	/**

	* An IPv4 ICMP header detected.

	*

	* This example returns always KIp6Hook_PASS without modifying

	* the packet in any way. There is some template if statements

	* which demonstrate the major paths that would need to be taken,

	* if any real processing was to happen.

	*/

	{

/** @code */

	if (aInfo.iProtocol != (TInt)KProtocolInetIcmp)

		{

		// If the CProtocolExain::NetworkAttached only bound the hook for

		// IPv4 ICMP, we should never get here...

		return KIp6Hook_PASS;

		}

	if (aInfo.iIcmp != 0)

		{

		// The ICMPv4 header is in the returned packet of some ICMP error  packet.

		//

		// aInfo.iOffset

		//	offset to the relevant ICMPv4 header

		// aInfo.iOffsetIp

		//	indicates position of the IP header of the returned packet.

		// aInfo.iSrcAddr

		//	is the source address of the returned packet (should be my own address)

		// aInfo.iDstAddr

		//	is the destination address of the returned packet

		return KIp6Hook_PASS;

		}

	// The incoming packet is ICMPv4 addressed to this node.

	//

	// aInfo.iOffset

	//	offset to the relevant ICMPv4 header

	// aInfo.iOffsetIp

	//	indicates position of the IP header before this ICMPv4 header

	//	(usually zero).

	// aInfo.iSrcAddr

	//	is the source address of the packet

	// aInfo.iDstAddr

	//	is the destination address of the packet (should be my own

	//	address, or some type of multicast/broadcast address).

	return KIp6Hook_PASS;

/** @endcode */

	}

#pragma warning (default:4100)