tcpiputils/dhcp/include/DHCP_Std.h
author Pat Downey <patd@symbian.org>
Wed, 01 Sep 2010 12:33:58 +0100
branchRCL_3
changeset 58 8d540f55e491
parent 57 abbed5a4b42a
child 75 c1029e558ef5
permissions -rw-r--r--
Revert incorrect RCL_3 drop: 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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// Provides constants common across DHCP component
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// 
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//
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/**
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 @file DHCP_Std.h
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*/
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#ifndef __DHCP_STD_H__
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#define __DHCP_STD_H__
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#include <e32def.h>
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#include <es_sock.h>
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#include <es_enum.h>
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#include <in_sock.h>
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#include <cflog.h>
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#include <es_sock_partner.h>
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#ifdef _DEBUG
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const TUid KMyPropertyCat = {0x101FD9C5};
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const TUint32 KMyPropertyDestPortv4 = 67;
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const TUint32 KMyPropertyDestPortv6 = 547;
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#endif
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__CFLOG_STMT(_LIT8(KLogSubSysDHCP, "DHCP");) // subsystem name
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IMPORT_C TInt E32Main();
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// DHCP ini file used for configuring extra options and additions configurability
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_LIT(DHCP_INI_DATA,"dhcp.ini");
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0
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#ifdef EKA2
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_LIT(KDHCPServerName,"!DHCPServ");
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#else
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_LIT(KDHCPServerName,"DHCPServ");
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#endif
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_LIT(KDHCPProcessName,"DhcpServ");
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_LIT(KDHCPExeName, "DHCPexe.exe");
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_LIT(KDHCPDLLName,"DHCPServ.dll");
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//persistence TIDs for DHCPv4 & DHCPv6 (cooked-up numbers to be able distinguish
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//what's been stored. Doesn't have to be system wide unique
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const TInt KDHCPv6Persinstence = 0x01DFA341;
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const TInt KDHCPv4Persinstence = 0x01DFA342;
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const TInt KDHCPv6PersinstenceId = 1;
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const TInt KDHCPv4PersinstenceId = 1;
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const TInt KDHCPv4MaxRetryCount = 3;
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const TInt KDHCPSrvMajorVersionNumber=1;
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const TInt KDHCPSrvMinorVersionNumber=0;
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const TInt KDHCPSrvBuildVersionNumber=0;
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const TUint8	KDhcpParameterRequestListLen = 7;
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const TUint16	KDhcpMaxMsgSizeIP4 = 576;
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const TUint8	KIp4AddrByteLength = 4;
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const TUint8	KIp4ChAddrMaxLength = 16;
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const TUint8	KHwAddrOffset = 8;
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#ifdef SYMBIAN_NETWORKING_ADDRESS_PROVISION
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const TUint 	KHwAddrLength = 6;
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#endif //SYMBIAN_NETWORKING_ADDRESS_PROVISION
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#ifdef _DEBUG
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const TUint8	KDhcpWrongSrcPort = 34;
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const TUint8	KDhcpWrongDestPort = 33;
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#else
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const TUint8	KDhcpSrcPort = 68;
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const TUint8	KDhcpDestPort = 67;
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#endif
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#ifdef SYMBIAN_NETWORKING_DHCPSERVER
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// now that we are having both dhcp client and server implemantation within 
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// DHCPServe.exe, we explicitly mentioned the client and server port to avoid confusion
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const TUint8 	KDhcpClientPort = 68;
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const TUint8	KDhcpServerPort = 67;
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/** 6 hours, magic number which is set on the rational that
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 anything bigger than this number would not be required as a mobile device might
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 not be used as a DHCP server for more than 6hours continuously
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 anything less than this lease time would mean more DHCP network traffic to reconfigure/renew
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 when the lease time expires
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*/
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const TUint32 KDefaultLeaseTime = 21600;
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// Constant used for setting custom lease time for the DHCP server 
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// using RProperty::Define and RProperty::Set API's
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// Only on Debug builds
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#ifdef _DEBUG
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const TUint32 KMyDefaultLeaseTime = 21600;
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#endif
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#endif // SYMBIAN_NETWORKING_DHCPSERVER
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const TUint		KOneSecond = 1;
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const TInt		KInfinity = -1;
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const TUint		KHalfSecondInMicroSeconds = 500000;
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const TUint		KZeroSecond = 0;
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const TUint     KFailTimeOut = 10;
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const TUint		KWaitForResponseTime = 512;	// in seconds
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const TUint		KReallyLongLease = 0x7fffffff; // over 68 years - a virtual freehold
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const TTimeIntervalSeconds KManualRenewTimeout = 2*KWaitForResponseTime;
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//------------------------------------------------------------------------------------
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//-- Debug heap control functions definition for the DHCP daemon.
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//-- Access to these function is provided by RConnection Ioctl functionality.
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//-- Note that this Ioctl level KDhcpMemDbgIoctl is not standard.
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//------------------------------------------------------------------------------------
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#ifdef  _DEBUG
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#define __DHCP_HEAP_CHECK_CONTROL
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#endif
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//-- IOCTL level for heap debug control functions
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const TUint KDhcpMemDbgIoctl    = KConnWriteUserDataBit | 0x1000;
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//-- debug heap control functions numbers
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const TUint KDHCP_DbgMarkHeap   = 1; //-- start heap mark.
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const TUint KDHCP_DbgCheckHeap  = 2; //-- check heap, required a paremeter - number of expected allocated cells.
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const TUint KDHCP_DbgMarkEnd    = 3; //-- mark the end of heap checking, required a paremeter - number of expected allocated cells.
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const TUint KDHCP_DbgFailNext   = 4; //-- simulate heap alloc failure. Requires a parameter - failure rate. if param <0 resets.
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const TUint KDHCP_DbgFlags      = 5; //-- set debug flags.
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//-- debug flags used with KDHCP_DbgFlags
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const TUint KDHCP_FailDiscover         	 = 1;  	//-- force init task to fail (state machine returns -KErrTimeOut)
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const TUint KDHCP_FailRenew            	 = 2;  	//-- force renew task to fail (state machine returns -KErrTimeOut)
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const TUint KDHCP_FailRebind           	 = 4;  	//-- force rebind task to fail (state machine returns -KErrTimeOut)
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const TUint KDHCP_SetShortLease        	 = 8;  	//-- set short lease as defined in KDHCP_ShortLeaseSec
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const TUint KDHCP_SetShortRetryTimeOut 	 = 16; 	//-- set short lease as defined in KDHCP_ShortRetryTimeOutSec
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const TUint KDHCP_ForceDiscovery       	 = 32; 	//-- ignore lease time in commDB.
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const TUint KDHCP_Dad 					 = 64;	// simulate a duplicate ip address has been found
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const TUint KDHCP_ShortLeaseRenewTime  	 = 20;	//
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const TUint KDHCP_ShortLeaseRebindTime   = 70;	// must be greater than timeout for test 5_6, so we know that renew worked
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const TUint KDHCP_ShortLeaseLeaseTime 	 = 110;	//
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const TUint KDHCP_ShortRetryTimeOut    	 = 7;	//
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const TUint KDHCP_RequestIP4BroadcastOffer = 128;	//-- override setting unicast bit in offers
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//-- buffer for storing function number
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typedef TPckgBuf<TInt> TDhcpMemDbgParamBuf;
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//-- IOCTL level for per-interface debug functions.
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//    specific numbers must have KConnWriteUserDataBit/KConnReadUserDataBit set as appropriate
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const TUint KDhcpInterfaceDbgIoctl    = 0x2000;
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58
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_LIT(KDhcpExtraOptions, "ExtraDhcpOptions");
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_LIT(KDhcpSection, "DHCP");
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const TInt KOpCodeOutOfBounds = 0x100;
0
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class TDhcpRnd
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/**
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  * Little random number generator class
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  *
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  * @internalTechnology
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  */
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        {
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public:
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        TDhcpRnd();
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        TInt Rnd(TInt aMin, TInt aMax);
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        TUint32 Xid() const;
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        void SetXid(TUint32 aXid);
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    void Init();
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    void Init6();
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private:
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        TInt64 iSeed;
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        TUint32 iXid;
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        };
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inline void TDhcpRnd::SetXid(TUint32 aXid)
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/**
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  * Sets transaction id
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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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        iXid = aXid;
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        }
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inline TUint32 TDhcpRnd::Xid() const
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/**
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  * Returns transaction id
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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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        return iXid;
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        }
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inline void TDhcpRnd::Init6()
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/**
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  * Initialises class to a random value
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  *
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  * @internalTechnology
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  */
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   {
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        SetXid(static_cast<TUint32>(Rnd(0,0xFFFFFF)));
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   }
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inline void TDhcpRnd::Init()
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/**
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  * Initialises class to a random value
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  *
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  * @internalTechnology
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  */
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   {
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        SetXid(static_cast<TUint32>(Rnd(0,KMaxTInt)));
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   }
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/**
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Byte-to byte copying one object to another. Using Mem::Copy allows to avoid system crash on target platform
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if the destination address isn't aligned to machine word boundary (e.g if it is a middle of some buffer).
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Also performs a kind of type-check.
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@param  apDst   destination address
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@param  apSrc   pointer to the source object
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@return pointer to the destination object 
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*/
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template<class T>
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inline T* ObjectByteCopy(T* apDst, const T* apSrc)
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{
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    return reinterpret_cast<T*>( Mem::Copy(apDst, apSrc ,sizeof(T)));
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}
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#endif // __DHCP_STD_H__
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