--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/inc/natfwbindingbase.h	Tue Feb 02 01:04:58 2010 +0200
@@ -0,0 +1,181 @@
+/*
+* 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:    Provides base class for binding services
+*
+*/
+
+
+
+
+#ifndef CBINDING_H
+#define CBINDING_H
+
+#include <e32base.h>
+#include <es_sock.h>
+#include <in_sock.h>
+#include "natfwstunclientdefs.h"
+
+class CSTUNClient;
+class CBindingImplementation;
+
+/**
+ * A base class for sending binding requests and 
+ * obtaining public IP address as seen by the STUN or TURN server.
+ * Child class instances cannot be used directly 
+ * through base class pointer.
+ *
+ * @lib     natfwstunclient.lib
+ * @since   s60 v3.2
+ */
+class CBinding : public CBase
+    {
+public:
+
+    /**
+     * Cancels a previously issued SendRequestL or AllocateRequestL.
+     *
+     * @since   s60 v3.2
+     * @return  void
+     */
+    virtual void CancelRequest() = 0;
+    
+    /**
+     * Send indication to remote address. Indications are not
+     * retransmitted and responses are not expected.
+     *
+     * @since   s60 v3.2
+     * @param   aRemoteAddr     Address to send to (remote agent)
+     * @param   aData           Data to send to remote agent. Use KNullDesC8
+     *                          if there is no data available.
+     * @param   aAddFingerprint Add fingerprint attribute if true
+     * @return  void
+     */
+    virtual void SendIndicationL( const TInetAddr& aRemoteAddr, 
+        const TDesC8& aData=KNullDesC8, TBool aAddFingerprint=EFalse ) = 0;
+     
+    /**
+     * Checks whether the public address has a value set.
+     *
+     * @since   s60 v3.2
+     * @return  ETrue if the public address has been obtained, 
+     *          otherwise EFalse. 
+     */
+    virtual TBool AddressResolved() const = 0;    
+
+    /**
+     * Gets the public address for this binding as seen in public network.
+     * If AddressResolved function returns EFalse, the return value of
+     * this function is not defined.
+     *
+     * @since   s60 v3.2
+     * @return  server reflexive transport address
+     */
+    virtual const TInetAddr& PublicAddr() const = 0;
+
+    /**
+     * This method should be called when receiving data
+     * from the socket shared with this binding and 
+     * the data cannot be handled by client.
+     * 
+     * @since   s60 v3.2
+     * @param   aData data received
+     * @param   aConsumed on return ETrue if the data was accepted,
+     *          otherwise EFalse.
+     * @param   aRemoteAddr remote address from remote address attribute
+     * @return  Decoded data if data is indication and not unsaf message,
+     *          otherwise NULL. Ownership is transferred.
+     */
+    virtual HBufC8* HandleDataL( 
+        const TDesC8& aData, TBool& aConsumed, TInetAddr& aRemoteAddr ) = 0;
+    
+    /**
+     * ICE specific attributes can be set for the request.
+     *  
+     * @since   s60 v3.2
+     * @param   aAttributes     Contains ICE specific attributes.
+     * @return  void
+     */
+    virtual void SetICESpecificAttributes( 
+        const TICEAttributes& aAttributes ) = 0;
+    
+    /**
+     * Query used stream ID
+     *
+     * @since   s60 v3.2
+     * @return  stream Id
+     */
+    virtual TUint StreamId() const = 0;
+    
+    /**
+     * Query used connection ID
+     *
+     * @since   s60 v3.2
+     * @return  connection Id
+     */
+    virtual TUint ConnectionId() const = 0;
+    
+    /**
+     * Returns alternate server transport address.
+     *
+     * @since   s60 v3.2
+     * @return  alternate server address
+     */
+    virtual const TInetAddr& AlternateServerAddr() const = 0;
+    
+    /**
+     * Returns realm value from error response.
+     *
+     * @since   s60 v3.2
+     * @return  realm from error response         
+     */
+    virtual const HBufC8* RealmFromResponse() const = 0;         
+
+    /**
+     * Returns the associated CSTUNClient instance.
+     *
+     * @since   s60 v3.2 
+     * @return  CSTUNClient, or NULL if the CSTUNClient has been deleted        
+     */
+    virtual const CSTUNClient* STUNClient() const = 0;
+    
+    /**
+     * Returns the implementation instance.      
+     */
+    virtual CBindingImplementation& Implementation() = 0;
+    
+    /**
+     * Returns a non-modifiable implementation instance.        
+     */
+    virtual const CBindingImplementation& Implementation() const = 0;
+    
+
+protected:
+    
+    virtual void ConstructL( CSTUNClient& aSTUNClient, TUint aStreamId, 
+        TUint aConnectionId ) = 0;
+
+    virtual void ConstructL( CSTUNClient& aSTUNClient, RSocket& aSocket ) = 0;
+
+protected: // Data
+    
+    /**
+     * Pointer to binding implementation.
+     * Own.
+     */
+    CBindingImplementation* iImplementation;
+    };
+
+#endif // CBINDING_H
+
+// End of File