tcpiputils/dhcp/include/DHCPIP4StateMachine.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 31 Aug 2010 16:45:15 +0300
branchRCL_3
changeset 57 abbed5a4b42a
parent 53 7e41d162e158
child 58 8d540f55e491
permissions -rw-r--r--
Revision: 201035 Kit: 201035
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// Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// The DHCPIP4StateMachine header file
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// 
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//
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/**
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 @file DHCPIP4StateMachine.h
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*/
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#ifndef __DHCPIP4STATEMACHINE_H__
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#define __DHCPIP4STATEMACHINE_H__
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#include "DHCPStateMachine.h"
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#include "DHCPIP4Msg.h"
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class CDHCPIP4State;
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#ifdef SYMBIAN_NETWORKING_ADDRESS_PROVISION
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class CDhcpHwAddrManager;
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#endif //SYMBIAN_NETWORKING_ADDRESS_PROVISION
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class CDHCPIP4StateMachine : public CDHCPStateMachine
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/**
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  * Implements helper function & starts DHCPv4 tasks (INIT,INFORM,....)
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  *
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  * @internalTechnology
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  */
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	{
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friend class CDHCPIP4Control;
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friend class CDHCPIP4Select;
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friend class CDHCPIP4HandleClientMsgs;
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friend class CDHCPIP4SendRequestResponse;
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friend class CDHCPIP4SendInformResponse;
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public:
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   /* tasks the statemachine could be started for
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   enum ETask
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      {
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      EInit,
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      EInform,
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      EReboot,
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      ERenew,
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      ERebind,
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      EDecline,
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      ERelease
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      };
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   */
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public:
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	~CDHCPIP4StateMachine();
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#ifdef SYMBIAN_NETWORKING_DHCPSERVER  		
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#ifndef SYMBIAN_NETWORKING_ADDRESS_PROVISION
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	static CDHCPIP4StateMachine* NewL(RSocketServ& aEsock, RConnection& aConnection, const TName& aInterfaceName,TBool aDHCPServerImpl);	
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#else
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	static CDHCPIP4StateMachine* NewL(RSocketServ& aEsock, RConnection& aConnection, const TName& aInterfaceName, CDhcpHwAddrManager* aDhcpHwAddrManager, TBool aDHCPServerImpl);
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#endif //SYMBIAN_NETWORKING_ADDRESS_PROVISION
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#else 	
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	static CDHCPIP4StateMachine* NewL(RSocketServ& aEsock, RConnection& aConnection, const TName& aInterfaceName);
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#endif // SYMBIAN_NETWORKING_DHCPSERVER	
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	virtual void GetServerAddress( TInetAddr& aAddress );
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#ifdef SYMBIAN_NETWORKING_DHCP_MSG_HEADERS
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	void StartInformL(MStateMachineNotify* aStateMachineNotify);
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#endif //SYMBIAN_NETWORKING_DHCP_MSG_HEADERS
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  	virtual void SetCurrentAddress(const TInetAddr& aCurrentAddress, const TInetAddr& aSubnetMask);
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#ifdef SYMBIAN_NETWORKING_DHCPSERVER  	
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	virtual void GetClientAddress(TInetAddr& aAddress);
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	virtual CDHCPState* ReceiveOnPort67L( TRequestStatus* aStatus );
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	virtual void InitialiseServerSocketL();//For the Server Impl
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	virtual void CreateOfferMsgL();
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   	virtual void HandleRequestMsgL();
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   	virtual void HandleInformMsgL();   	
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	virtual void InitServerStateMachineL(MStateMachineNotify* aStateMachineNotify);	
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	virtual void InitServerBinding(MStateMachineNotify* aStateMachineNotify);	
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#endif // SYMBIAN_NETWORKING_DHCPSERVER	
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   virtual CDHCPState* ReceiveL( TRequestStatus* aStatus );
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   //interface used by CDHCPIP4Control
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	virtual void StartInitL(MStateMachineNotify* aStateMachineNotify, EInitialisationContext aInitialisationContext, TInt aUserTimeOut = 0);
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	virtual void StartInformL(MStateMachineNotify* aStateMachineNotify, TBool aStaticAddress);
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	virtual void StartRebootL(MStateMachineNotify* aStateMachineNotify);
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	virtual void StartRenewL(MStateMachineNotify* aStateMachineNotify, TInt aUserTimeOut);
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	virtual void StartRebindL(MStateMachineNotify* aStateMachineNotify);
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	virtual void StartDeclineL(MStateMachineNotify* aStateMachineNotify);
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	virtual void StartReleaseL(MStateMachineNotify* aStateMachineNotify);
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	virtual void RemoveConfiguredAddress(const TInetAddr *aInetAddr = NULL);
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	//interface used by CDHCPIP4States derivatives
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   void CreateMessageL();
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   void CreateCommonMsgStart();
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   void CreateCommonMsgEndL();
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   virtual void InitialiseSocketL();
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   virtual void CreateDiscoverMsgL();
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   virtual void CreateOfferAcceptanceRequestMsgL();
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   virtual void CreateRebootRequestMsgL();
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   virtual void CreateInformMsgL();
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   virtual void CreateDeclineMsgL();
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   virtual void CreateRenewRequestMsgL();
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   virtual void CreateRebindRequestMsgL();
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   virtual void CreateReleaseMsgL();
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   TInt CreateIPv4LinkLocal();
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   virtual void HandleOfferL();
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   virtual CDHCPState* HandleReplyL( TRequestStatus* aStatus );
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   virtual void BindSocketForUnicastL();
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   TUint8 GetMessageTypeL() const;
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	TBool CheckXid() const;
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   119
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	//interface used by both CDHCPIP4States derivatives & CDHCPIP4Control
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	TBool IsUsingStaticAddress() const;
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#ifdef _DEBUG
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	static TInt GetDestPort();
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#endif
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#ifdef SYMBIAN_DNS_PROXY
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	void ReadDhcpMsgParamsL();
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#endif // SYMBIAN_DNS_PROXY	
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#ifdef SYMBIAN_NETWORKING_DHCPSERVER
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	void CheckClientMsgL();	
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	void HandleRequest();
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	void HandleInformL();
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	void ProcessDiscoverL();
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	void ProcessRequestL();
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	void ProcessInformL();
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	TUint8 GetClientMessageTypeL() const;
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	TUint32 GetIPAddressToOffer();
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	TUint32 GetClientIPAddress();
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#ifdef SYMBIAN_NETWORKING_ADDRESS_PROVISION	
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	TBool ClientHwAddrProvisioned();
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#endif //SYMBIAN_NETWORKING_ADDRESS_PROVISION
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#endif // SYMBIAN_NETWORKING_DHCPSERVER	
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protected:
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#ifdef SYMBIAN_NETWORKING_DHCPSERVER
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#ifndef SYMBIAN_NETWORKING_ADDRESS_PROVISION
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	CDHCPIP4StateMachine(RSocketServ& aEsock, RConnection& aConnection, const TName& aInterfaceName,TBool aDHCPServerImpl);
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#else
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	CDHCPIP4StateMachine(RSocketServ& aEsock, RConnection& aConnection, const TName& aInterfaceName,CDhcpHwAddrManager* aDhcpHwAddrManager, TBool aDHCPServerImpl);
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#endif
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#else 
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	CDHCPIP4StateMachine(RSocketServ& aEsock, RConnection& aConnection, const TName& aInterfaceName);
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#endif // SYMBIAN_NETWORKING_DHCPSERVER		
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	void ConstructL();
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	void ConfigureInterfaceL();
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	virtual void PrepareToSendL(CDHCPStateMachine::EAddressType aEAddressType);
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#ifdef SYMBIAN_NETWORKING_DHCPSERVER	
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	virtual void PrepareToSendServerMsgL(CDHCPStateMachine::EAddressType aEAddressType);
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#endif // SYMBIAN_NETWORKING_DHCPSERVER	
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   	virtual void AssembleClientIDsL();
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	virtual void AssignAddresses( TInetAddr& aDest, const TInetAddr& aSrc ) const;
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protected:
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	DHCPv4::CDHCPMessageHeaderIP4* DhcpMessage() const;
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	void SetMessageHeaderL( DHCPv4::TDHCPv4MessageType aMsgType );
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#ifdef 	SYMBIAN_NETWORKING_DHCPSERVER
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	void SetMessageHeaderAsServerL( DHCPv4::TDHCPv4MessageType aMsgType );
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#endif // SYMBIAN_NETWORKING_DHCPSERVER	
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	void HandleAckL();
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	void CreateFqdnUpdateRequestL();
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#ifdef SYMBIAN_NETWORKING_DHCPSERVER	
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private:
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	void ProcessDeclineL();
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	TUint32 GenerateClientIPAddress();
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    void AddParamRequestOptionL(TUint8 aParamReqValue);
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	void CheckClientParamListL();
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	void AddMessageOptionsL();
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#endif // SYMBIAN_NETWORKING_DHCPSERVER   
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private:
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   //accessed by CDHCPIP4Control & CDHCPIP6MessageReader
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	TInetAddr iDHCPServerAddr; //server address currently used to send/receive
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	TUint32 iServerAddress;	// to store the address of the DHCP Server we are dealing with
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#ifdef 	SYMBIAN_NETWORKING_DHCPSERVER
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	TInetAddr iDHCPClientAddr; //client address 
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	TBool iBroadCastFlag;
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#endif // SYMBIAN_NETWORKING_DHCPSERVER	
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	TPtr8 iIncomingMsgDataPtr;
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	TInetAddr iDHCPServerID;
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	TInetAddr iBroadcastAddress;
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	TInetAddr iSubnetMask;
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	};
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#ifdef SYMBIAN_NETWORKING_DHCPSERVER
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#ifndef SYMBIAN_NETWORKING_ADDRESS_PROVISION
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inline CDHCPIP4StateMachine::CDHCPIP4StateMachine(RSocketServ& aEsock, RConnection& aConnection, const TName& aInterfaceName,TBool aDHCPServerImpl):
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                     CDHCPStateMachine( aEsock, aConnection, aInterfaceName ,aDHCPServerImpl),
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                     iIncomingMsgDataPtr( 0, 0 )
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#else
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inline CDHCPIP4StateMachine::CDHCPIP4StateMachine(RSocketServ& aEsock, RConnection& aConnection, const TName& aInterfaceName, CDhcpHwAddrManager* aDhcpHwAddrManager, TBool aDHCPServerImpl):
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                     CDHCPStateMachine( aEsock, aConnection, aInterfaceName , aDhcpHwAddrManager, aDHCPServerImpl),
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                     iIncomingMsgDataPtr( 0, 0 )
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#endif //SYMBIAN_NETWORKING_ADDRESS_PROVISION
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/**
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  * Constructor of the DHCPv4StateMachine
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  *
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  * @internalTechnology
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  *
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  */
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	{
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	}
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#else // SYMBIAN_NETWORKING_DHCPSERVER
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inline CDHCPIP4StateMachine::CDHCPIP4StateMachine(RSocketServ& aEsock, RConnection& aConnection, const TName& aInterfaceName):
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                     CDHCPStateMachine( aEsock, aConnection, aInterfaceName ),
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                     iIncomingMsgDataPtr( 0, 0 )
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/**
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  * Constructor of the DHCPv4StateMachine
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  *
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  * @internalTechnology
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  *
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  */
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	{
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	}
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#endif // SYMBIAN_NETWORKING_DHCPSERVER
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inline DHCPv4::CDHCPMessageHeaderIP4* CDHCPIP4StateMachine::DhcpMessage() const
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	{
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	return static_cast<DHCPv4::CDHCPMessageHeaderIP4*>(iDhcpMessage);
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	}
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inline TBool CDHCPIP4StateMachine::IsUsingStaticAddress() const
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	{
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	return iCfgInfoOnly;
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	}
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#ifdef SYMBIAN_NETWORKING_DHCPSERVER	
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inline TUint32 CDHCPIP4StateMachine::GetClientIPAddress()
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	{
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	DHCPv4::CDHCPMessageHeaderIP4* v4Msg = DhcpMessage();
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	return  v4Msg->GetCIAddr();
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	}
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#endif // SYMBIAN_NETWORKING_DHCPSERVER	
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#endif
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