--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmsharing/mmshavailability/src/musavasipobserver.cpp	Fri Jun 11 13:36:18 2010 +0300
@@ -0,0 +1,136 @@
+/*
+* Copyright (c) 2005-2006 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:   Implementation class is used to get function call from SIP Server.
+*
+*/
+
+
+
+#include "musavasipobserver.h"
+#include "musavasipadapter.h"
+
+#include <e32base.h>
+#include <sipservertransaction.h>
+// -----------------------------------------------------------------------------
+// Two-phased constructor.
+// -----------------------------------------------------------------------------
+//
+CMusAvaSipObserver* CMusAvaSipObserver::NewL()
+    {
+    CMusAvaSipObserver* self = new (ELeave) CMusAvaSipObserver();
+    CleanupStack::PushL (self);
+    self->ConstructL();
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+// -----------------------------------------------------------------------------
+// C++ destructor.
+// -----------------------------------------------------------------------------
+//
+CMusAvaSipObserver::~CMusAvaSipObserver()
+    {
+    iObservers.Reset();
+    iObservers.Close();
+    }
+
+// -----------------------------------------------------------------------------
+// Symbian second-phase constructor.
+// -----------------------------------------------------------------------------
+//
+void CMusAvaSipObserver::ConstructL()
+    {
+    }
+
+// -----------------------------------------------------------------------------
+// C++ constructor.
+// -----------------------------------------------------------------------------
+//
+CMusAvaSipObserver::CMusAvaSipObserver()
+    {
+    }
+
+// -----------------------------------------------------------------------------
+// A SIP request has been received from the network.
+// -----------------------------------------------------------------------------
+//
+void CMusAvaSipObserver::IncomingRequest(
+                                TUint32 aIapId,
+                                CSIPServerTransaction* aTransaction )
+    {
+    for( TInt i=0; i<iObservers.Count(); i++ )
+        {
+        TInt retval( KErrNotFound );
+        retval = iObservers[i]->IncomingRequest( aIapId,
+                                                 aTransaction );
+        if( retval == KErrNone)
+            {
+            return;
+            }
+        }
+    delete aTransaction;        
+    }
+// -----------------------------------------------------------------------------
+// The received SIP request time-outed and it is invalid i.e. cannot be used
+// anymore.
+// -----------------------------------------------------------------------------
+//
+void CMusAvaSipObserver::TimedOut(CSIPServerTransaction& aTransaction )
+    {
+    for( TInt i=0; i<iObservers.Count(); i++ )
+        {
+        TInt retval( KErrNotFound );
+        retval = iObservers[i]->TimedOut( aTransaction );
+        if( retval == KErrNone)
+            {
+            return;
+            }
+        }
+    }
+
+// -----------------------------------------------------------------------------
+// 
+// -----------------------------------------------------------------------------
+//
+void CMusAvaSipObserver::AddObserverL( MMusAvaSipAdapter& aAdapter, TInt aIndex )
+    {
+    TInt index = iObservers.Find( &aAdapter );
+    
+    if( index == KErrNotFound )
+        {
+        if ( aIndex > KErrNotFound && aIndex < iObservers.Count() )
+              {
+              iObservers.InsertL( &aAdapter, aIndex );
+              }
+          else
+              {
+              iObservers.AppendL( &aAdapter );
+              }            
+        }
+    }
+
+// -----------------------------------------------------------------------------
+// 
+// -----------------------------------------------------------------------------
+//
+void CMusAvaSipObserver::RemoveObserver( MMusAvaSipAdapter& aAdapter )
+    {
+    TInt index = iObservers.Find( &aAdapter );
+    
+    if( index != KErrNotFound )
+        {
+        iObservers.Remove( index );
+        }
+    }
+