--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/natfw/natfwunsaf_protocols/unsaf_codec/src/natfwunsafchangerequestattribute.cpp	Tue Feb 02 01:04:58 2010 +0200
@@ -0,0 +1,141 @@
+/*
+* Copyright (c) 2006-2007 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:   
+*
+*/
+
+
+
+
+#include <es_sock.h>
+#include "natfwunsafchangerequestattribute.h"
+#include "natfwunsafutils.h"
+
+// -----------------------------------------------------------------------------
+// CNATFWUNSAFChangeRequestAttribute::NewL
+// -----------------------------------------------------------------------------
+//
+CNATFWUNSAFChangeRequestAttribute*
+CNATFWUNSAFChangeRequestAttribute::NewL(TBool aChangeIP, TBool aChangePort)
+    {
+    CNATFWUNSAFChangeRequestAttribute* self =
+        CNATFWUNSAFChangeRequestAttribute::NewLC(aChangeIP, aChangePort);
+    CleanupStack::Pop(self);
+    return self;
+    }
+
+// -----------------------------------------------------------------------------
+// CNATFWUNSAFChangeRequestAttribute::NewLC
+// -----------------------------------------------------------------------------
+//
+CNATFWUNSAFChangeRequestAttribute*
+CNATFWUNSAFChangeRequestAttribute::NewLC(TBool aChangeIP, TBool aChangePort)
+    {
+    CNATFWUNSAFChangeRequestAttribute* self =
+        new (ELeave) CNATFWUNSAFChangeRequestAttribute(aChangeIP, aChangePort);
+    CleanupStack::PushL(self);
+    return self;
+    }
+
+// -----------------------------------------------------------------------------
+// CNATFWUNSAFChangeRequestAttribute::DecodeAttributeL
+// -----------------------------------------------------------------------------
+//
+CNATFWUNSAFAttribute*
+CNATFWUNSAFChangeRequestAttribute::DecodeAttributeL(const TDesC8& aByteStream)
+    {
+    TUint16 valueLength = ParseLengthL(aByteStream);
+    __ASSERT_ALWAYS(valueLength == EAttributeValueSize,
+                    User::Leave(KErrCorrupt));
+    __ASSERT_ALWAYS(aByteStream.Length() >= EValueOffset + valueLength,
+                    User::Leave(KErrArgument));
+
+    TUint32 value = BigEndian::Get32(aByteStream.Mid(EValueOffset).Ptr());
+
+    return NewL((value & EChangeIPMask) > 0, (value & EChangePortMask) > 0);
+    }
+
+// -----------------------------------------------------------------------------
+// CNATFWUNSAFChangeRequestAttribute::CNATFWUNSAFChangeRequestAttribute
+// -----------------------------------------------------------------------------
+//
+CNATFWUNSAFChangeRequestAttribute::CNATFWUNSAFChangeRequestAttribute(
+    TBool aChangeIP, TBool aChangePort) :
+    CNATFWUNSAFAttribute(),
+    iChangeIP(aChangeIP),
+    iChangePort(aChangePort)
+    {
+    }
+
+// -----------------------------------------------------------------------------
+// CNATFWUNSAFChangeRequestAttribute::~CNATFWUNSAFChangeRequestAttribute
+// -----------------------------------------------------------------------------
+//
+CNATFWUNSAFChangeRequestAttribute::~CNATFWUNSAFChangeRequestAttribute()
+    {
+    }
+
+// -----------------------------------------------------------------------------
+// CNATFWUNSAFChangeRequestAttribute::Type
+// -----------------------------------------------------------------------------
+//
+CNATFWUNSAFAttribute::TType CNATFWUNSAFChangeRequestAttribute::Type() const
+    {
+    return EChangeRequest;
+    }
+
+// -----------------------------------------------------------------------------
+// CNATFWUNSAFChangeRequestAttribute::EncodeValueL
+// -----------------------------------------------------------------------------
+//
+HBufC8* CNATFWUNSAFChangeRequestAttribute::EncodeValueL() const
+    {
+    HBufC8* encodedValue = HBufC8::NewLC(EAttributeValueSize);
+
+    TPtr8 ptr = encodedValue->Des();
+    ptr.FillZ(EAttributeValueSize);
+
+    TUint32 value(0);
+    if (ChangeIP())
+        {
+        value = value | EChangeIPMask;
+        }
+    if (ChangePort())
+        {
+        value = value | EChangePortMask;
+        }
+
+    NATFWUNSAFUtils::WriteNetworkOrder32L(ptr, 0, value);
+
+    CleanupStack::Pop(encodedValue);
+    return encodedValue;
+    }
+
+// -----------------------------------------------------------------------------
+// CNATFWUNSAFChangeRequestAttribute::ChangeIP
+// -----------------------------------------------------------------------------
+//
+TBool CNATFWUNSAFChangeRequestAttribute::ChangeIP() const
+    {
+    return iChangeIP;
+    }
+
+// -----------------------------------------------------------------------------
+// CNATFWUNSAFChangeRequestAttribute::ChangePort
+// -----------------------------------------------------------------------------
+//
+TBool CNATFWUNSAFChangeRequestAttribute::ChangePort() const
+    {
+    return iChangePort;
+    }