--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/natfw/natfwstunturnclient/inc/ctransactionidgenerator.h	Tue Feb 02 01:04:58 2010 +0200
@@ -0,0 +1,96 @@
+/*
+* Copyright (c) 2005 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:    
+*
+*/
+
+
+
+
+#ifndef C_CTRANSACTIONIDGENERATOR_H
+#define C_CTRANSACTIONIDGENERATOR_H
+
+// INCLUDES
+#include <e32base.h>
+#include "natfwunsaftransactionid.h"
+
+// FORWARD DECLARATIONS
+
+// CLASS DECLARATION
+
+/**
+ *  This class provides unique UNSAF TransactionID values. 
+ */
+class CTransactionIDGenerator : public CBase
+    {
+    public: // Constructors and destructor
+
+        /**
+        * Creates a new instance of CTransactionIDGenerator.        
+        * @return A new instance of CTransactionIDGenerator, ownership is
+        *    transferred.
+        */
+        static CTransactionIDGenerator* NewL();
+
+        ~CTransactionIDGenerator();
+    
+    public: // New functions
+
+        /**
+        * Creates a unique UNSAF TransactionID and writes it into
+        * aTransactionID.
+        *
+        * @param aObject IN: Pointer to an object, whose state will be used as a
+        *         random input for creating the UNSAF TransactionID.
+        *         Ownership is not transferred.
+        * @param aObjectSize Size in bytes, of the object pointed by aObject.
+        * @param aTransactionID OUT: UNSAF TransactionID
+        */
+        void GetIDL( TAny* aObject,
+                     TInt aObjectSize,
+                     TNATFWUNSAFTransactionID& aTransactionID );
+
+    private:
+    
+        CTransactionIDGenerator();
+
+        CTransactionIDGenerator(
+            const CTransactionIDGenerator& aTransactionIDGenerator );
+
+        HBufC8* BuildInputDataLC( TAny* aObject, TInt aObjectSize );
+        
+        void AddClockInfo( TDes8& aBuf ) const;
+        
+        void AddSystemInfo( TDes8& aBuf ) const;
+        
+        void ComputeChecksum( TDes8& aBuf,
+                              const TAny* aPtr,
+                              TInt aLength ) const;
+
+    private: // Data
+
+        //Seed value for Math::Rand()
+        TInt64 iSeed;
+
+        TUint32 iCounter;
+
+    private: // For testing purposes
+
+#ifdef TEST_EUNIT
+        friend class CSTUNClientImplementationTest;
+#endif
+        __DECLARE_TEST;
+    };
+
+#endif // C_CTRANSACTIONIDGENERATOR_H