// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).

 // All rights reserved.

 // This component and the accompanying materials are made available

 // under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members

 // which accompanies this distribution, and is available

 // at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".

 //

 // Initial Contributors:

 // Nokia Corporation - initial contribution.

 //

 // Contributors:

 //

 // Description:

 //

 /**

  @file

  @internalTechnology

  @released

 */

 #ifndef CS_API_EXT_H

 #define CS_API_EXT_H

 #include <es_sock.h>

 #include <comms-infras/api_ext_list.h>

 #include <comms-infras/trbuf.h>

 class CCommsApiExtReqMsg;

 class CCommsApiExtRespMsg;

 class RCommsApiExtensionBase

 /**

 Base class for Comms API extensions.

 @internalTechnology

 @released

 */

 	{

 protected:

 	IMPORT_C explicit RCommsApiExtensionBase();

 	IMPORT_C TInt Open(RCommsSubSession& aExtensionProvider, TSupportedCommsApiExt aInterfaceId);

 	IMPORT_C void Close();

 	IMPORT_C void SendRequest(CCommsApiExtReqMsg& aRequestMsg, TDes8& aResponseBuf, TRequestStatus& aStatus);

 	IMPORT_C void SendMessage(CCommsApiExtReqMsg& aRequestMsg);

 protected:

 	RCommsSubSession iSubSession;

 	TSupportedCommsApiExt iInterfaceId;

 private:

 	RPointerArray<Elements::TRBuf8> iBuffers;

 	};

 template<TSupportedCommsApiExt T>

 class RCommsApiExtension : public RCommsApiExtensionBase

 /**

 Comms API extensions template. New extension APIs may derive from this template.

 @internalTechnology

 @released

 */

 	{

 public:

 	inline TInt Open(RCommsSubSession& aExtensionProvider);

 	};

 template<TSupportedCommsApiExt T>

 TInt RCommsApiExtension<T>::Open(RCommsSubSession& aExtensionProvider)

 	{

 	return RCommsApiExtensionBase::Open(aExtensionProvider,T);

 	}

 #endif // CS_API_EXT_H