--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/natplugins/natptraversalcontroller/inc/cnatbinding.h	Tue Feb 02 01:04:58 2010 +0200
@@ -0,0 +1,141 @@
+/*
+* 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 CNATBINDING_H
+#define CNATBINDING_H
+
+//  INCLUDES
+#include <in_sock.h>
+#include <e32base.h>
+#include "mnatbindingrefresherobserver.h"
+#include "nattraversalsocketuser.h"
+
+// FORWARD DECLARATIONS
+class CSTUNBinding;
+class MSIPNATTraversalRequestObserver;
+class MSIPNATBindingObserver;
+class MNATTraversalSocketManager;
+class CNATBindingRefresher;
+
+// CLASS DECLARATION
+/**
+* NAT binding.
+*/
+class CNATBinding : public CBase,
+                    public MNATBindingRefresherObserver,
+                    public MNATTraversalSocketUser
+    {
+    public:  // Constructors and destructor
+
+        static CNATBinding* NewL(
+            TUint32 aInitialRequestId,
+            RSocket& aSTUNSocket,
+            const TInetAddr& aLocalAddr,
+            MSIPNATTraversalRequestObserver& aInitialRequestObserver,
+            MSIPNATBindingObserver& aBindingObserver,
+            MNATTraversalSocketManager& aSocketManager);
+
+        static CNATBinding* NewLC(
+            TUint32 aInitialRequestId,
+            RSocket& aSTUNSocket,
+            const TInetAddr& aLocalAddr,
+            MSIPNATTraversalRequestObserver& aInitialRequestObserver,
+            MSIPNATBindingObserver& aBindingObserver,
+            MNATTraversalSocketManager& aSocketManager);
+
+        ~CNATBinding();
+
+    public: // New functions
+
+        TBool PersistentConnectionRequired() const;
+
+        RSocket& STUNSocket();
+
+        void SetBinding(CSTUNBinding* aBinding);
+
+        CSTUNBinding* Binding();
+
+        void SendSTUNRequestL();
+
+        void SetBindingFailed(TInt aError);
+
+        TBool SetPublicAddr(const TInetAddr& aPublicAddr);
+
+        void SetRefresher(CNATBindingRefresher* aRefresher);
+
+        CNATBindingRefresher* Refresher();
+
+        TUint32 InitialRequestId() const;
+
+        MSIPNATBindingObserver& NATBindingObserver();
+
+        TBool AddressResolved() const;
+
+        const TInetAddr& PublicAddr() const;
+
+        void HandleDataL(const TDesC8& aData,
+                         const RSocket& aSocket,
+                         TBool& aConsumed);
+
+        void ContinueRefreshing();
+
+    public: // From MNATBindingRefresherObserver
+
+        void NATBindingRefreshComplete(TInt aCompletionCode);
+
+    public: // MNATTraversalSocketUser
+
+        const RSocket& Socket() const;
+
+        void SendingAllowed();
+
+        TBool IsSending() const;
+
+        void CancelSending();
+
+    private: // Constructors
+
+        CNATBinding(
+            TUint32 aInitialRequestId,
+            RSocket& aSocket,
+            const TInetAddr& aLocalAddr,
+            MSIPNATTraversalRequestObserver& aInitialRequestObserver,
+            MSIPNATBindingObserver& aBindingObserver,
+            MNATTraversalSocketManager& aSocketManager);
+
+    private: // New functions
+
+        void SendingCompleted();
+
+    private: // Data
+
+        TUint32 iInitialReqId;
+        RSocket& iSTUNSocket;
+        MSIPNATTraversalRequestObserver& iInitialReqObserver;
+        MSIPNATBindingObserver& iBindingObserver;
+        MNATTraversalSocketManager& iSocketManager;
+        TInetAddr iPublicAddr;
+        TBool iAddressResolved;
+        CSTUNBinding* iBinding; // owned
+        CNATBindingRefresher* iRefresher; // owned
+        TBool iIsSending;
+
+    };
+
+#endif // CNATBINDING_H
+
+// End of File