diff -r 000000000000 -r 094583676ce7 PECengine/TransferAdapter2/Inc/MPEngPureDataHandler.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PECengine/TransferAdapter2/Inc/MPEngPureDataHandler.h	Thu Dec 17 08:41:52 2009 +0200
@@ -0,0 +1,131 @@
+/*
+* Copyright (c) 2004 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:  Pure data handler abstract interface
+*
+*/
+
+#ifndef __MPENGPUREDATAHANDLER_H__
+#define __MPENGPUREDATAHANDLER_H__
+
+
+//  INCLUDES
+#include <E32Std.h>
+
+// DATA TYPES
+
+
+
+// FORWARD DECLARATIONS
+
+
+// CLASS DECLARATION
+/**
+ *  Pure data handler for network session
+ *
+ *  It is used to send requests to the network
+ *  server and to retrieve its responses
+ *
+ *  @since 3.0
+ */
+class MPEngPureDataHandler
+    {
+
+    public: //
+
+        /**
+         *  Close reference to the Pure data handler
+         *  Pure data halder is deleted if it is no more needed.
+         *
+         *  @since 3.0
+         */
+        virtual void Close() = 0;
+
+        /**
+         *  Get Transfer buffer for out going message
+         *
+         *  @since 3.0
+         *  @return writable data buffer
+         */
+        virtual TPtr8 TransferBufferL() = 0;
+
+        /**
+         *  Sends data from the transfer buffer to the network
+         *  Completion code is signaled in TRequestStatus complete
+         *
+         *  @since 3.0
+         *  @param aStatus TRequestStatus to signal completion
+         *  @return unique code of the transaction. Same code is
+         *          used, when client wants to get response to this
+         *          message
+         */
+        virtual TInt SendDataL( TRequestStatus& aStatus ) = 0;
+
+        /**
+         *  Gets response for the message of given operation id
+         *
+         *  @since 3.0
+         *  @param aTransId transaction Id generated by the send operation
+         *  @return buffer with the response to the transaction
+         *          ownership of the buffer is passed to the user of function
+         */
+        virtual HBufC8* ResponseL( TInt aTransId ) = 0;
+
+        /**
+         *  Cancel sendin operation of given transaction id
+         *
+         *  @since 3.0
+         *
+         *  @param aTransId transaction id of operation to be canceled
+         */
+        virtual void CancelSending( TInt aTransId ) = 0;
+
+        /**
+         *  Listen Incoming data
+         *  Function returns number of incoming data buffer which
+         *  are queued on the client side and can be picked
+         *  when incoming data are picked by the listener, transaction
+         *  is is 0. Buffer of incoming data is FIFO
+         *
+         *  @since 3.0
+         *  @param request status to signal new data
+         *  @return number of the incoming data buffers
+         *      which are already ready to be picked by the listener
+         */
+        virtual TInt ListenIncomingData( TRequestStatus& aStatus ) = 0;
+
+        /**
+         *  Cancel incoming data listening
+         *
+         *  @since 3.0
+         *  @param
+         *  @return
+         */
+        virtual void CancelListening() = 0;
+
+    protected:  //Destructor
+
+        /**
+         *  Virtual inline destructor.
+         *  Protected destructor to prohibits deletion trough interface.
+         */
+        virtual ~MPEngPureDataHandler() {};
+    };
+
+
+#endif      //  __MPENGPUREDATAHANDLER_H__
+
+//  End of File
+
+
+