ICMPv6.h

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//
// Copyright (C) 2005 Andras Varga
// Copyright (C) 2005 Wei Yang, Ng
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program; if not, see <http://www.gnu.org/licenses/>.
//


#ifndef __ICMPv6_H__
#define __ICMPv6_H__

#include <omnetpp.h>
#include "RoutingTable6Access.h"
#include "IPv6Datagram.h"
#include "ICMPv6Message_m.h"
#include "IPv6ControlInfo.h"


class INET_API ICMPv6 : public cSimpleModule
{
  public:
    virtual void sendErrorMessage(IPv6Datagram *datagram, ICMPv6Type type, int code);

    virtual void sendErrorMessage(cPacket *transportPacket, IPv6ControlInfo *ctrl, ICMPv6Type type, int code);

  protected:
    // internal helper functions
    virtual void sendToIP(ICMPv6Message *msg, const IPv6Address& dest);
    virtual void sendToIP(ICMPv6Message *msg); // FIXME check if really needed

    virtual ICMPv6Message *createDestUnreachableMsg(int code);
    virtual ICMPv6Message *createPacketTooBigMsg(int mtu);
    virtual ICMPv6Message *createTimeExceededMsg(int code);
    virtual ICMPv6Message *createParamProblemMsg(int code);//TODO:Section 3.4 describes a pointer. What is it?

  protected:
    virtual void initialize();

    virtual void handleMessage(cMessage *msg);
    virtual void processICMPv6Message(ICMPv6Message *);

    virtual void processEchoRequest(ICMPv6EchoRequestMsg *);

    virtual void processEchoReply(ICMPv6EchoReplyMsg *);

    virtual void sendEchoRequest(cPacket *);

    virtual bool validateDatagramPromptingError(IPv6Datagram *datagram);

    virtual void errorOut(ICMPv6Message *);
};


#endif