--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/realtimenetprots/sipfw/SIP/SigCompController/Common/inc/compressinglogic.h	Tue Feb 02 01:03:15 2010 +0200
@@ -0,0 +1,96 @@
+/*
+* 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          : compressinglogic.h
+* Part of       : SIP SigComp Controller
+* Version       : SIP/3.0 
+*
+*/
+
+
+
+
+/**
+ @internalComponent
+*/
+
+
+#ifndef __COMPRESSINGLOGIC_H__
+#define __COMPRESSINGLOGIC_H__
+#include <e32base.h>
+#include <in_sock.h>
+
+// FORWARD DECLARATIONS
+class CSIPResponse;
+class CSIPRequest;
+class CSIPMessage;
+class CSIPURI;
+class MSigCompOwner;
+class CSIPViaHeader;
+class TSIPTransportParams;
+
+// CLASS DEFINITION
+class CSigCompCompressingLogic : public CBase
+	{
+public: // Constructors and destructor
+
+	static CSigCompCompressingLogic* NewL( MSigCompOwner& aSigCompOwner );
+	static CSigCompCompressingLogic* NewLC( MSigCompOwner& aSigCompOwner );
+	
+	~CSigCompCompressingLogic();
+
+public:
+
+	CBufBase* EncodeL( const TSIPTransportParams& aTransportParams,
+	                   CSIPResponse& aResponse,
+                       const TInetAddr& aAddress,
+                       TBool aStreambasedProtocol, 
+                       TBool& aCompressed );
+	
+	CBufBase* EncodeL( const TSIPTransportParams& aTransportParams,
+	                   CSIPRequest& aRequest,
+                       const TInetAddr& aAddress,
+                       TBool aStreambasedProtocol, 
+                       TBool& aCompressed );
+	
+
+private:
+
+	CSigCompCompressingLogic( MSigCompOwner& aSigCompOwner );
+
+	TBool CompInVia( CSIPMessage& aMessage );
+	void SetCompToTopViaL( CSIPMessage& aMessage );
+	void DeleteCompFromTopVia( CSIPMessage& aMessage );
+	CSIPViaHeader* TopViaHeader( CSIPMessage& aMessage );
+	
+	TBool HasSigCompParam( CSIPURI& aURI ) const;
+	TBool ShouldBeCompressL( const TSIPTransportParams& aTransportParams,
+	                         CSIPRequest& aRequest );
+	TBool ShouldBeCompressL( CSIPResponse& aResponse );
+	void AddSigCompToContactsL( CSIPMessage& aMessage );
+	void SetCompEqualSigCompL( CSIPURI& aURI );
+	void RemoveCompEqualSigComp( CSIPURI& aURI );
+	CSIPURI* SigCompUriFromRequest( CSIPRequest& aRequest );
+	
+private: // Data
+
+	MSigCompOwner& iSigCompOwner;
+	
+	};
+
+
+
+#endif // end of __COMPRESSINGLOGIC_H__
+
+// End of File