diff -r 000000000000 -r 1bce908db942 natplugins/natptraversalcontroller/src/cnatbindingrefresher.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/natplugins/natptraversalcontroller/src/cnatbindingrefresher.cpp	Tue Feb 02 01:04:58 2010 +0200
@@ -0,0 +1,147 @@
+/*
+* Copyright (c) 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 "cnatbindingrefresher.h"
+#include "mnatbindingrefresherobserver.h"
+
+
+// -----------------------------------------------------------------------------
+// CNATBindingRefresher::CNATBindingRefresher
+// -----------------------------------------------------------------------------
+//
+CNATBindingRefresher::CNATBindingRefresher(
+    CDeltaTimer& aDeltaTimer,
+    MNATBindingRefresherObserver& aObserver)
+    : iObserver(aObserver),
+      iDeltaTimer(aDeltaTimer),
+      iDeltaTimerCallBack(RefreshTimerExpired,this),
+      iDeltaTimerEntry(iDeltaTimerCallBack),
+      iIsRefreshed(EFalse),
+      iTimerRunning(EFalse)
+    {
+    }
+
+// -----------------------------------------------------------------------------
+// CNATBindingRefresher::~CNATBindingRefresher
+// -----------------------------------------------------------------------------
+//
+CNATBindingRefresher::~CNATBindingRefresher()
+    {
+    iDeltaTimer.Remove(iDeltaTimerEntry);
+    }
+
+// -----------------------------------------------------------------------------
+// CNATBindingRefresher::PersistentConnectionRequired
+// -----------------------------------------------------------------------------
+//
+TBool CNATBindingRefresher::PersistentConnectionRequired() const
+    {
+    return EFalse;
+    }
+
+// -----------------------------------------------------------------------------
+// CNATBindingRefresher::HasSocket
+// -----------------------------------------------------------------------------
+//
+TBool CNATBindingRefresher::HasSocket(const CSecureSocket& /*aSocket*/) const
+    {
+    return EFalse;
+    }
+
+// -----------------------------------------------------------------------------
+// CNATBindingRefresher::SetRefresh
+// -----------------------------------------------------------------------------
+//
+void CNATBindingRefresher::SetRefresh(TBool aRefresh)
+    {
+    iIsRefreshed = aRefresh;
+    if (aRefresh)
+        {
+        StartTimer();
+        }
+    else
+        {
+        iDeltaTimer.Remove(iDeltaTimerEntry);
+        CancelRefresh();
+        iTimerRunning = EFalse;
+        }
+    }
+
+// -----------------------------------------------------------------------------
+// CNATBindingRefresher::ContinueRefreshing
+// -----------------------------------------------------------------------------
+//
+void CNATBindingRefresher::ContinueRefreshing()
+    {
+    if (iIsRefreshed)
+        {
+        StartTimer();
+        }
+    }
+
+// -----------------------------------------------------------------------------
+// CNATBindingRefresher::IsRefreshed
+// -----------------------------------------------------------------------------
+//
+TBool CNATBindingRefresher::IsRefreshed() const
+    {
+    return iIsRefreshed;
+    }
+
+// -----------------------------------------------------------------------------
+// CNATBindingRefresher::RefreshTimerExpired
+// A callback for CDeltaTimer
+// -----------------------------------------------------------------------------
+//
+TInt CNATBindingRefresher::RefreshTimerExpired(TAny* aPtr)
+    {
+    _LIT(KPanicCategory,"NAT Traversal Controller");
+    __ASSERT_ALWAYS(aPtr,User::Panic(KPanicCategory,KErrBadHandle));
+    CNATBindingRefresher* self = reinterpret_cast<CNATBindingRefresher*>(aPtr);
+    self->RefreshNow();
+    return ETrue;
+    }
+
+// -----------------------------------------------------------------------------
+// CNATBindingRefresher::StartTimer
+// -----------------------------------------------------------------------------
+//
+void CNATBindingRefresher::StartTimer()
+    {
+    if (!iTimerRunning)
+        {
+        iDeltaTimer.Remove(iDeltaTimerEntry);
+        TTimeIntervalMicroSeconds32 interval(RefreshInterval());
+        iDeltaTimer.Queue(interval,iDeltaTimerEntry);
+        iTimerRunning = ETrue;
+        }
+    }
+
+// -----------------------------------------------------------------------------
+// CNATBindingRefresher::RefreshNow
+// -----------------------------------------------------------------------------
+//
+void CNATBindingRefresher::RefreshNow()
+    {
+    iTimerRunning = EFalse;
+    TRAPD(err, RefreshTimerExpiredL());
+    if (err)
+        {
+        iObserver.NATBindingRefreshComplete(err);
+        }
+    }