--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/natfw/natfwconnectionmultiplexer/inc/mncmmessageobserver.h	Tue Feb 02 01:04:58 2010 +0200
@@ -0,0 +1,84 @@
+/*
+* 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:    Observer class that the client must implement to receive notifications about
+*                incoming and outgoing messages. Allows observer to observe and 
+*                make modifications to offered messages.
+*
+*/
+
+
+
+
+#ifndef M_MNCMMESSAGEOBSERVER_H
+#define M_MNCMMESSAGEOBSERVER_H
+
+#include <e32base.h>
+
+
+/**
+ *  Observer class that the client must implement to receive notifications about
+ *  incoming and outgoing messages. Allows observer to observe and 
+ *  make modifications to offered messages
+ *
+ *  @lib connectionmux.lib
+ *  @since S60 v3.2
+ */
+class MNcmMessageObserver
+    {
+
+public:
+
+    /**
+     * Called by Connection Multiplexer when incoming message is found.
+     * Allows connection observer to observe and make modifications to found
+     * message by offering an own copy of content with modification(s).
+     *
+     * @since   S60 v3.2
+     * @param   aStreamId           The ID identifying stream
+     * @param   aMessage            Message is a reference to constant message
+     * @param   aLocalAddr          A stream local address.
+     * @param   aFromAddr           A remote source address. ( From socket )
+     * @param   aPeerRemoteAddr     A peer remote address.
+     * @return  Pointer to a heap descriptor with new content for message,
+     *          otherwise NULL is returned. Ownership of the heap descriptor is
+     *          transferred to connection multiplexer ( from observer ).
+     */
+    virtual HBufC8* IncomingMessageNotify( TUint aStreamId,
+        const TDesC8& aMessage, const TInetAddr& aLocalAddr,
+        const TInetAddr& aFromAddr, TInetAddr& aPeerRemoteAddr ) = 0;
+
+
+    /**
+     * Called by Connection Multiplexer when outgoing message is found.
+     * Allows connection observer to observe and make modifications to found
+     * message by offering an own copy of content with modification(s).
+     *
+     * @since S60 v3.2
+     * @param aStreamId             The ID identifying stream
+     * @param aConnectionId         The ID identifying connection
+     * @param aDestinationAddress   Destination address where the packet
+     *                              is being sent to.   
+     * @param aMessage              Message is a reference to constant message
+     *                              which was found
+     * @return pointer to a heap descriptor with new content for message,
+     *         otherwise NULL is returned. Ownership of the heap descriptor is
+     *         transferred to multiplexer (from observer).
+     */
+    virtual HBufC8* OutgoingMessageNotify( TUint aStreamId,
+        TUint aConnectionId, const TInetAddr& aDestinationAddress,
+        const TDesC8& aMessage ) = 0;      
+    };
+
+
+#endif // M_MNCMMESSAGEOBSERVER_H