diff -r 000000000000 -r 307788aac0a8 realtimenetprots/sipfw/SIP/TransactionUser/src/TimerValues.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/realtimenetprots/sipfw/SIP/TransactionUser/src/TimerValues.cpp	Tue Feb 02 01:03:15 2010 +0200
@@ -0,0 +1,117 @@
+// Copyright (c) 2007-2009 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:
+// Name          : TimerValues.cpp
+// Part of       : TransactionUser
+// Version       : SIP/6.0
+//
+
+
+
+#include "TimerValues.h"
+
+const TInt KBitsToShiftToMultiplyBy64 = 6;
+
+// -----------------------------------------------------------------------------
+// TTimerValues::TTimerValues
+// -----------------------------------------------------------------------------
+//
+TTimerValues::TTimerValues( TUint aT1, TUint aT2, TUint aT4 ) :
+	iT1( aT1 ),
+	iT2( aT2 ),
+	iT4( aT4 )
+	{
+    }
+
+// -----------------------------------------------------------------------------
+// TTimerValues::TTimerValues
+// -----------------------------------------------------------------------------
+//
+TTimerValues::TTimerValues() : iT1( 0 ), iT2( 0 ), iT4( 0 )
+	{
+	}
+
+// -----------------------------------------------------------------------------
+// TTimerValues::CheckValuesL
+// If T1 is larger than T2, T1 wouldn't affect retransmissions at all, it would
+// only affect the transaction timeout duration.
+// It doesn't make sense to set T1, T2 or T4 with a zero value.
+// If T1 is very large, calculating 64*T1 with Duration64xT1 would be too large
+// to fit into TUint.
+// -----------------------------------------------------------------------------
+//
+TBool TTimerValues::CheckValues() const
+	{
+	return ( iT1 <= iT2 ) &&
+		   ( iT1 > 0 ) &&
+		   ( iT2 > 0 ) &&
+		   ( iT4 > 0 ) &&
+		   ( iT1 <= ( KMaxTUint >> KBitsToShiftToMultiplyBy64 ) );
+	}
+
+// -----------------------------------------------------------------------------
+// TTimerValues::DoubleUptoT2
+// -----------------------------------------------------------------------------
+//
+void TTimerValues::DoubleUptoT2( TUint& aDuration ) const
+	{
+	if ( aDuration == 0 )
+		{
+		aDuration = iT1;
+		}
+	else
+		{
+		aDuration = aDuration << 1;
+		}
+
+	if ( aDuration > iT2 )
+		{
+		aDuration = iT2;
+		}
+	}
+
+// -----------------------------------------------------------------------------
+// TTimerValues::Duration64xT1
+// -----------------------------------------------------------------------------
+//
+TUint TTimerValues::Duration64xT1() const
+	{
+	return iT1 << KBitsToShiftToMultiplyBy64;
+	}
+
+// -----------------------------------------------------------------------------
+// TTimerValues::T1
+// -----------------------------------------------------------------------------
+//
+TUint TTimerValues::T1() const
+	{
+	return iT1;
+	}
+
+// -----------------------------------------------------------------------------
+// TTimerValues::T2
+// -----------------------------------------------------------------------------
+//
+TUint TTimerValues::T2() const
+	{
+	return iT2;
+	}
+
+// -----------------------------------------------------------------------------
+// TTimerValues::T4
+// -----------------------------------------------------------------------------
+//
+TUint TTimerValues::T4() const
+	{
+	return iT4;
+	}