--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/realtimenetprots/sipfw/ClientResolver/Resolver/src/CSdpMLineStrategyBase.cpp	Tue Feb 02 01:03:15 2010 +0200
@@ -0,0 +1,166 @@
+// 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          : CSdpMLineStrategyBase.cpp
+// Part of       : SIP Client Resolver
+// Version       : 1.0
+//
+
+
+
+#include "CSdpMLineStrategyBase.h"
+#include "MSipClients.h"
+#include "MSipClient.h"
+#include "sipresponse.h"
+#include "sdpdocument.h"
+#include "sipstrings.h"
+#include "sipstrconsts.h"
+
+const TUint K488ResponseCode = 488;
+
+// ----------------------------------------------------------------------------
+// CSdpMLineStrategyBase::CSdpMLineStrategyBase
+// ----------------------------------------------------------------------------
+//
+CSdpMLineStrategyBase::CSdpMLineStrategyBase(const MSipClients& aSipClients)
+: CSdpStrategyBase(aSipClients)
+	{
+	}
+
+// ----------------------------------------------------------------------------
+// CSdpMLineStrategyBase::~CSdpMLineStrategyBase
+// ----------------------------------------------------------------------------
+//
+CSdpMLineStrategyBase::~CSdpMLineStrategyBase()
+	{	
+	}
+
+// ----------------------------------------------------------------------------
+// CSdpMLineStrategyBase::ApplyL
+// ----------------------------------------------------------------------------
+//
+CSIPResponse* CSdpMLineStrategyBase::ApplyL(
+    CSdpDocument& aDocument, 
+    RArray<TUid>& aUids)
+	{
+	CSIPResponse* response = MediaLineExistL(aDocument);
+	if (!response && IsApplicable(aDocument))
+	    {
+	    FindApplicationL(aDocument,aUids);
+	    if(aUids.Count() == 0)
+		    {
+			response = CSIPResponse::NewL(
+			    K488ResponseCode,
+			    SIPStrings::StringF(SipStrConsts::EPhraseNotAcceptableHere));
+		    }
+	    }
+	return response;
+	}
+
+// ----------------------------------------------------------------------------
+// CSdpMLineStrategyBase::FindApplicationL
+// ----------------------------------------------------------------------------
+//
+void CSdpMLineStrategyBase::FindApplicationL(CSdpDocument& aDocument,
+                                             RArray<TUid>& aUids)
+    {
+	for(TInt i=0; i < aUids.Count();i++)
+		{
+		MSipClient* client = iSipClients.GetByUID(aUids[i]);
+		if (!client || !MatchL(aDocument,*client))
+			{
+			aUids.Remove(i);
+			i--;
+			}		
+		}
+    }
+
+// ----------------------------------------------------------------------------
+// CSdpMLineStrategyBase::MediaLineExist
+// ----------------------------------------------------------------------------
+//
+CSIPResponse* CSdpMLineStrategyBase::MediaLineExistL(CSdpDocument& aDocument)
+ 	{
+   	if(aDocument.MediaFields().Count() == 0)
+        {
+        return CSIPResponse::NewL(K488ResponseCode,
+            SIPStrings::StringF(SipStrConsts::EPhraseNotAcceptableHere));
+        }
+    return NULL;
+    }
+	
+// ----------------------------------------------------------------------------
+// CSdpMLineStrategyBase::MatchL
+// ----------------------------------------------------------------------------
+//
+TBool CSdpMLineStrategyBase::MatchL(CSdpDocument& aDocument,
+                                    MSipClient& aClient)
+    {
+	const RPointerArray<CSdpMediaField>& clientMedias = 
+	    aClient.SdpDocument().MediaFields();
+	
+	const RPointerArray<CSdpMediaField>& receivedMedias = 
+	    aDocument.MediaFields();	
+	
+	// All the media fields in received request must be supported 
+	// by the client. If not the client is removed from the list of clients,
+	// that are capable of handling the request.  
+	for (TInt i=0; i < receivedMedias.Count(); i++)
+	    {
+	    CSdpMediaField* receivedMedia = receivedMedias[i];
+	    if (IsApplicable(*receivedMedia))
+	        {
+	        TBool mediaFound = EFalse;
+	        for (TInt j=0; j < clientMedias.Count() && !mediaFound; j++)
+	            {
+	            if (FieldsMatchL(*receivedMedia,*(clientMedias[j])))
+	                {
+	                mediaFound = ETrue;
+	                }
+	            }
+	        if (!mediaFound)
+	            {
+	            return EFalse;
+	            }
+	        }
+	    }
+
+	return ETrue;
+	}
+
+// ----------------------------------------------------------------------------
+// CSdpMLineStrategyBase::IsApplicable
+// ----------------------------------------------------------------------------
+//	
+TBool CSdpMLineStrategyBase::IsApplicable(CSdpDocument& aDocument)
+    {
+ 	RPointerArray<CSdpMediaField>& mediaFields = aDocument.MediaFields();
+	for (TInt i=0; i < mediaFields.Count(); i++)
+	    {
+	    if (IsApplicable(*mediaFields[i]))
+	        {
+	        return ETrue;
+	        }
+	    }
+    return EFalse;
+    }
+
+// ----------------------------------------------------------------------------
+// CSdpMLineStrategyBase::IsApplicable
+// ----------------------------------------------------------------------------
+//	
+TBool CSdpMLineStrategyBase::IsApplicable(CSdpMediaField& /*aMediaField*/)
+    {
+    // default implementation
+    return ETrue;
+    }