--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/servicediscoveryandcontrol/pnp/inc/rcontrolchannel.h	Tue Feb 02 01:12:20 2010 +0200
@@ -0,0 +1,127 @@
+// Copyright (c) 2008-2009 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 __RCONTROLCHANNEL_H__
+#define __RCONTROLCHANNEL_H__
+
+#include <e32base.h>
+
+class CControlChannelBase;
+
+/* 
+ This class is used to wrap the TDes8 data that is used for transmission
+ @publishedPartner
+ @prototype
+*/
+class TControlMessage
+	{
+public: 
+    /** Default constructor */
+	IMPORT_C TControlMessage ();
+
+    /** Default destructor */
+	IMPORT_C ~TControlMessage ();
+    /** 
+	Used to Set the data part of control message with data supplied in aData
+    @param aData Supplied data
+    */
+	IMPORT_C void SetMessageDes ( const TDesC8& aData );
+    /** 
+	Used to Set the data part of control message with data supplied in aData
+    @param aData Supplied data
+    */
+	IMPORT_C void SetMessagePtr ( TDes8& aData );	
+    /**
+	Used to retrieves the data part of control message
+    @return 8 bit non-modifiable descriptor 
+    */
+	IMPORT_C const TDesC8& MessageDes () const;
+    /**
+	Used to retrieves the data part of control message
+    @return 8 bit modifiable descriptor 
+    */
+	IMPORT_C TDes8& MessagePtr ();	
+    /**
+	Used to tell whether the data is the last message in the control data or not
+    @param True if the msg is the last message
+    */
+	IMPORT_C TBool IsLast() const;
+    /**	Used to set the last message of the control data */
+	IMPORT_C void SetLast();
+    /**
+	Used to set max length of Control Message
+    @param aLen Max length of the msg
+    */
+	IMPORT_C void SetMaxLength ( TInt aLen );
+    /** 
+	Used to get max length of the Control Message
+    @return Max length of the msg 
+    */
+	IMPORT_C TInt MaxLength () const;
+    /** Used to reset the SetLast flag */
+	IMPORT_C void ClearFlags ();
+	
+private:
+	TPtr8 		iPtr;
+	TInt 		iMaxLength;
+	TUint	 	iFlags;
+	};
+
+
+/** 
+ This class is used to send and receive control messages
+ @publishedPartner
+ @prototype
+ */
+class RControlChannel
+	{
+	friend class RPnPServiceDiscovery;
+	friend class RPnPServicePublisher;
+	
+public: 
+	
+    /** default constructor */
+	IMPORT_C RControlChannel ( );
+    /**
+	Used to receive control messages
+    @param aMessage msg wrapped as TControlMessage 
+    @param aStatus request status
+    */
+	IMPORT_C void Recv ( TControlMessage& aMessage, TRequestStatus& aStatus );
+    /**
+	Used to send control messages
+    @param aMessage msg wrapped as TControlMessage 
+    @param aStatus request status
+    */
+	IMPORT_C void Send ( TControlMessage& aMessage, TRequestStatus& aStatus );
+    
+	/** Used to close the channel */
+	IMPORT_C void Close ();	
+	
+	/** Used to cancel the asynchronous recv */
+	IMPORT_C void CancelRecv ();
+	
+	/** Used to cancel the asynchronous send */
+	IMPORT_C void CancelSend ();
+
+private:
+    void Attach(CControlChannelBase& aChannelBase);	
+    
+private:
+	CControlChannelBase* iControlChannelImpl;
+	};
+
+#endif //__RCONTROLCHANNEL_H__