diff -r 608f67c22514 -r 896e9dbc5f19 internetradio2.0/irnetworkcontroller/inc/irdatatransferobserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/internetradio2.0/irnetworkcontroller/inc/irdatatransferobserver.h	Wed Aug 18 09:40:26 2010 +0300
@@ -0,0 +1,182 @@
+/*
+* 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:  Data transfer interfaces.
+*
+*/
+
+
+#ifndef M_IRDATATRANSFEROBSERVER_H
+#define M_IRDATATRANSFEROBSERVER_H
+
+#include <e32def.h>
+
+class RHTTPSession;
+class MIRDataTransferObserver;
+
+
+/**
+ * Data transfer tracker interface.
+ *
+ * Provides means to attach itself to an existing network session to track the data amounts
+ * transferred through it, and also an API through which raw data amounts can be manually
+ * inputted (this is mainy the case when raw sockets are used directly).
+ *
+ * For getting notifications from the application's data transfer amounts on the core side,
+ * this class supports an observer interface through which data transfer events are notified.
+ */
+NONSHARABLE_CLASS( MIRDataTransferTracker )
+    {
+public:
+
+    /**
+     * Supported data transfer categories.
+     */
+    enum TIRTransferCategory
+        {
+
+        /**
+         * The category for the data is unknown.
+         */
+        EIRTransferCategoryUnknown,
+
+        /**
+         * The category for the data is SDS.
+         */
+        EIRTransferCategoryIsds,
+
+        /**
+         * The category for the data is content show.
+         */
+        EIRTransferCategoryAudio
+
+        };
+
+    /**
+     * Simple struct to keep hold of all the different data amounts transferred.
+     *
+     * The actual total amount of bytes of transferred data through the connection
+     * is the amount of total bytes sent added to the amount of total bytes received.
+     */
+    NONSHARABLE_STRUCT( TIRDataTransferPckg )
+        {
+
+        /**
+         * The total amount of bytes sent originating from all traffic.
+         * This is simply the sum of all the categorized data sent amounts.
+         */
+        TInt iBytesSentTotal;
+
+        /**
+         * The total amount of bytes received originating from all traffic.
+         * This is simply the sum of all the categorized data received amounts.
+         */
+        TInt iBytesReceivedTotal;
+
+        /**
+         * The total amount of bytes sent originating from unknown traffic.
+         */
+        TInt iBytesSentUnknown;
+
+        /**
+         * The total amount of bytes received originating from unknown traffic.
+         */
+        TInt iBytesReceivedUnknown;
+
+        /**
+         * The total amount of bytes sent originating from station directory traffic.
+         */
+        TInt iBytesSentIsds;
+
+        /**
+         * The total amount of bytes received originating from station directory traffic.
+         */
+        TInt iBytesReceivedIsds;
+
+        /**
+         * The total amount of bytes sent originating from content show traffic.
+         */
+        TInt iBytesSentAudio;
+
+        /**
+         * The total amount of bytes received originating from content show traffic.
+         */
+        TInt iBytesReceivedAudio;
+
+        };
+
+public:
+
+    /**
+     * Sets the observer that is notified of data transfer events.
+     *
+     * @param   aObserver           The observer to set, or NULL if none.
+     */
+    virtual void SetObserver( MIRDataTransferObserver* aObserver ) = 0;
+
+    /**
+     * Returns the current data transfer amounts.
+     *
+     * This always reflects the current situation, and thereby does not
+     * take the threshold mechanism into account.
+     *
+     * @return  The current data transfer amounts.
+     */
+    virtual const TIRDataTransferPckg& TransferredData() const = 0;
+
+    /**
+     * Binds the tracker to an existing and opened HTTP session.
+     *
+     * @param   aSession            Session to bind the tracker to.
+     * @param   aCategory           Transfer category to record the data under.
+     */
+    virtual void BindL( RHTTPSession aSession, TIRTransferCategory aCategory ) = 0;
+
+    /**
+     * Notifies of raw bytes transferred through the connection.
+     *
+     * Raw sockets cannot be observer automatically, so if they are used, then manual
+     * notification is required on the user's part.
+     *
+     * @param   aBytesSent          Bytes sent through the raw socket.
+     * @param   aBytesReceived      Bytes received through the raw socket.
+     * @param   aCategory           Transfer category to record the data under.
+     */
+    virtual void RawDataTransferredL( TInt aBytesSent,
+             TInt aBytesReceived, TIRTransferCategory aCategory ) = 0;
+
+    };
+
+/**
+ * Interface which all data transfer events are passed through.
+ */
+class MIRDataTransferObserver
+    {
+
+public:
+
+    /**
+     * Invoked when a data transfer event occurs.
+     *
+     * The amount of data supplied as the parameter is the absolute amount of data transferred during
+     * the life time of the connection. The threshold after which the call back is invoked is internal,
+     * resulting in that it may not always be instantly called unless a predefined amount of data has
+     * already been transferred since the last call back was made.
+     *
+     * @param   aData           Data amounts that have been transferred through the connection.
+     */
+    virtual void HandleDataTransferEventL( 
+                const MIRDataTransferTracker::TIRDataTransferPckg& aData ) = 0;
+    };
+
+#endif // M_IRDATATRANSFEROBSERVER_H