--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/realtimenetprots/sipfw/ClientResolver/Client/api/sipclientdiscoveryobserver.h	Tue Feb 02 01:03:15 2010 +0200
@@ -0,0 +1,93 @@
+/*
+* Copyright (c) 2004-2009 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        : sipclientdiscoveryobserver.h
+* Part of     : SIP Client Discovery API
+* Interface   : 
+* Version     : 1.0
+*
+*/
+
+
+
+#ifndef MSIPCLIENTDISCOVERYOBSERVER_H
+#define MSIPCLIENTDISCOVERYOBSERVER_H
+
+#include <e32base.h>
+#include <stringpool.h>
+
+// FORWARD DECLARATIONS
+class CSIPHeaderBase;
+
+// CLASS DECLARATION
+/**
+* @publishedPartner
+* @released
+*
+* An observer that must be realized by the user in order to
+* receive events about resolved clients' communication channels
+* or occurred errors.
+* @lib n/a
+*/
+class MSIPClientDiscoveryObserver
+	{
+     public: // New functions
+     
+		/**
+		* Channel UID was resolved for the SIP request
+		*
+		* @param aChannel a channel UID to which the SIP request
+		*		 must be routed
+		* @param aRequestId a request ID
+        */
+		virtual void ChannelResolvedL(TUid aChannel,
+		                              TUint32 aRequestId) = 0;
+
+		/**
+		* The client channel UID was not found.
+        * The implementation of this callback should generate 
+        * a SIP response with the provided elements and send it to network.
+		*
+		* @param aRequestId a request ID
+		* @param aStatusCode contains a SIP response status code
+        *        for the SIP response that should be generated.
+		* @param aReasonPhrase contains a SIP response reason phrase
+        *        for the SIP response that should be generated.
+		* @param aHeaders contains well-formed optional SIP headers 
+        *        that include additional information why the client 
+        *        could not be found. For example Accept-headers that describe
+        *        the content-types currently supported. 
+        *        The ownership is transferred.
+        * @param aContent the body of the response. NULL if not present.
+        *          The ownership is transferred.
+		*/
+		virtual void ClientNotFoundL(TUint32 aRequestId,
+								     TUint aStatusCode, 
+								     RStringF aReasonPhrase, 
+								     RPointerArray<CSIPHeaderBase> aHeaders,
+								     HBufC8* aContent) = 0;
+
+		/**
+		* Error occurred during resolution of the client's channel UID.
+        * This callback will also be called if one of the callbacks 
+        * ChannelResolvedL or ClientNotFoundL leaves using the leave code.
+		*
+		* @param aError error code.
+		* @param aRequestId a request ID 
+		*/
+		virtual void ErrorOccurred(TInt aError,
+								   TUint32 aRequestId) =0;		
+	};
+
+#endif // MSIPCLIENTDISCOVERYOBSERVER_H