--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/natplugins/natptraversalcontroller/inc/ccrlfsender.h	Tue Feb 02 01:04:58 2010 +0200
@@ -0,0 +1,73 @@
+/*
+* 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: 
+*
+*/
+
+#ifndef CCRLFSENDER_H
+#define CCRLFSENDER_H
+
+//  INCLUDES
+#include <e32base.h>
+#include <es_sock.h>
+#include <securesocket.h>
+
+// FORWARD DECLARATIONS
+class MNATBindingRefresherObserver;
+
+
+// CLASS DECLARATION
+/**
+* A base class for sending CRLF bursts to network.
+*/
+class CCRLFSender : public CActive
+    {
+    public:    // Constructors and destructor
+
+        virtual ~CCRLFSender();
+
+    public: // New functions
+
+        virtual TBool PersistentConnectionRequired() const;
+
+        virtual TBool HasSocket( const RSocket& aSocket ) const;
+
+        virtual TBool HasSocket( const CSecureSocket& aSocket ) const;
+
+        void Send();
+
+    private: // From CActive
+
+        void RunL();
+
+    protected: // Constructors
+
+        CCRLFSender( MNATBindingRefresherObserver& aObserver );
+
+    protected: // New functions
+
+        virtual void Send( const TDesC8& aData ) = 0;
+
+        virtual TBool ReadyToSend();
+
+        virtual void SendingCompleted();
+
+    protected: // Data
+
+        MNATBindingRefresherObserver& iObserver;
+    };
+
+#endif // CCRLFSENDER_H
+
+// End of File