/*

* Copyright (c) 2005-2009 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:

* Name          : SipRequestHandlerObserver.h

* Part of       : SIP Request Handler

* Version       : SIP/4.0 

*

*/

/**

 @internalComponent

*/

#ifndef MSIPREQUESTHANDLEROBSERVER_H

#define MSIPREQUESTHANDLEROBSERVER_H

#include "SipRequestHandlerBase.h"

class CSIPResponse;

class MSIPRequestHandlerObserver

	{

	public:

		/**

		* Destructor.

    	*/

    	virtual ~MSIPRequestHandlerObserver () { }

		/**

		* A client UID was resolved for the SIP request

		* @param aRequestId the request ID

		* @param aUid a client UID to which the SIP request must be routed

    	*/

		virtual void ClientFoundL(TUint32 aRequestId, TUid aUid) = 0;

		/**

		* A client UID was not found.

        * The implementation of this callback should generate 

        * a SIP error response with the provided elements and 

        * send it to network.

		* @param aRequestId a request ID

		* @param aSIPResponse a SIP error response. 

		*        The ownership is transferred.

		*/

		virtual void ClientNotFoundL(TUint32 aRequestId,

								     CSIPResponse* aSIPResponse) = 0;

		/**

		* Error occurred during resolution of the client's channel UID.

        * This callback will also be called if one of the callbacks 

        * ClientFoundL or ClientNotFoundL leaves using the leave code.

        * @param aRequestId a request ID

		* @param aError error code. 

		*/

		virtual void ErrorOccurred(TUint32 aRequestId, TInt aError) =0;

	};

#endif // MSIPREQUESTHANDLEROBSERVER_H