--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/realtimenetprots/sipfw/SIP/sipapi/api/siphttpdigestchallengeobserver.h	Tue Feb 02 01:03:15 2010 +0200
@@ -0,0 +1,55 @@
+/*
+* 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        : siphttpdigestchallengeobserver.h
+* Part of     : SIP Client
+* Interface   : SDK API, SIP Client API
+* Version     : 1.0
+*
+*/
+
+
+
+#ifndef MSIPHTTPDIGESTCHALLENGEOBSERVER_H
+#define MSIPHTTPDIGESTCHALLENGEOBSERVER_H
+
+// FORWARD DECLARATIONS
+
+// CLASS DECLARATION
+
+/**
+* @publishedAll
+* @released
+*
+* The user must implement this interface if it intends to
+* provide HTTP Digest credentials upon received challenges
+* from the SIP servers on the signaling path.
+* The user should provide credentials or ignore the challenge
+* using functions defined in TSIPHttpDigest class.
+*
+*  @lib n/a
+*/
+class MSIPHttpDigestChallengeObserver
+	{
+    public: // New functions
+		/**
+		* SIP request resulted in 401/407 response that contains
+		* a challenge.
+		*
+		* @param aRealm a realm for which the challenge was received
+		*/
+		virtual void ChallengeReceived(const TDesC8& aRealm) = 0;
+	};
+
+#endif