--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/natfw/natfwturnplugin/inc/natfwturnrefreshtimer.h	Tue Feb 02 01:04:58 2010 +0200
@@ -0,0 +1,118 @@
+/*
+* 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:    Sends keepalive messages to TURN Client in order to keep
+*                allocation in TURN Server alive
+*
+*/
+
+
+
+
+#ifndef C_NATFWTURNREFRESHTIMER_H
+#define C_NATFWTURNREFRESHTIMER_H
+
+#include <e32base.h>
+
+class MNATFWRefreshObserver;
+
+/**
+ *  Sends keepalive messages to TURN Client.
+ *
+ *  Sends keepalive messages to TURN Client in order to keep
+ *  allocation in TURN Server alive. Gets interval in microseconds from 
+ *  CNATFWTurnPlugin. 
+ *
+ *  @lib turnplugin.lib
+ *  @since S60 v3.2
+ */
+class CNATFWTurnRefreshTimer : public CActive
+    {
+public:
+
+    /**
+     * Creates a new instance of NAT FW TURN Refresh Timer.
+     *
+     * @since S60 v3.2
+     * @param aObserver Observer for callbacks to timer's user
+     * @return A new instance, ownership is transferred.
+     */
+    static CNATFWTurnRefreshTimer* NewL( MNATFWRefreshObserver&aObserver );
+    
+    /**
+     * Creates a new instance of NAT FW TURN Refresh Timer and
+     * pushes it to CleanupStack.
+     *
+     * @since S60 v3.2
+     * @param aObserver Observer for callbacks to timer's user
+     * @return A new instance, ownership is transferred.
+     */    
+    static CNATFWTurnRefreshTimer* NewLC( MNATFWRefreshObserver&aObserver );
+
+    ~CNATFWTurnRefreshTimer();
+
+    /**
+     * Waits for given time (aInterval) and calls SetActive().
+     * If interval is 0, timer is cancelled.
+     *
+     * @since S60 v3.2
+     * @param aInterval Interval in microseconds
+     */
+    void StartTurnRefresh( TUint aInterval );
+
+    /**
+     * Client can query if refresh is going on.
+     *
+     * @since S60 v3.2
+     * @return ETrue if refreshing
+     */
+    TBool IsRunning() const;
+
+protected:
+
+    /**
+     * from CActive
+     */
+    void RunL();
+    
+    /**
+     * from CActive
+     */
+    void DoCancel();
+
+private:
+
+    CNATFWTurnRefreshTimer( MNATFWRefreshObserver&aObserver );
+
+    void ConstructL();
+
+private: // data
+
+    /**
+     * Interval in microseconds
+     */
+    TUint iInterval;
+
+    /**
+     * Asynchronous timer service.
+     */
+    RTimer iTimer;
+    
+    /**
+     * MNATFWRefreshObserver reference.
+     */
+    MNATFWRefreshObserver& iObserver;
+
+    };
+
+#endif // C_NATFWTURNREFRESHTIMER_H