--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/servicediscoveryandcontrol/pnp/test/upnp/upnpmessage/inc/mcomposerobserver.h	Tue Feb 02 01:12:20 2010 +0200
@@ -0,0 +1,55 @@
+// 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 __MCOMPOSEROBSERVER_H_
+#define __MCOMPOSEROBSERVER_H_
+
+// System includes.
+#include <e32std.h>
+
+/**
+The MComposerObserver class is the observer API for the upnp request and response composer.
+It allows the composer to notify its observer when it has message data ready to 
+send and when the message has been completed.
+*/
+class MComposerObserver
+	{	
+public:
+/**
+	Notifies the observer that there is a message data that is ready to be sent.
+	The API will be invoked by the composer after it has composed the message start line and
+	the message headers. It'll again be invoked once the message body data is ready.
+*/	
+	virtual void MessageDataReadyL(RBuf8& aData) = 0;
+
+/**
+	Signals the end of the composing activity.
+*/	
+	virtual void ComposingConcluded() = 0;
+	
+/**
+	Error notifier. The composer has experienced an error.
+	@param aError The error code. Possible error codes are:
+	KErrNoMemory - When there is insufficient memory for allocations,
+	KErrCorrupt - When the body data supplier indicated that the last data part even though it 
+				  had not supplied all the data it specified. Or the body data supplier 
+				  has supplied all the data it specified but has not indicated a 
+                  last data part.
+    KErrNotFound - When the Locate() and Find() APIs of TDesC8 fail.
+*/	
+	virtual void ComposerError(TInt aError) = 0;
+	};
+
+#endif /*MCOMPOSEROBSERVER_H_*/