--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmsharing/mmshavailability/inc/musavacapabilityexchange.h	Fri Jun 11 13:36:18 2010 +0300
@@ -0,0 +1,153 @@
+/*
+* Copyright (c) 2005-2007 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:  Capability Exchange 
+*
+*/
+
+#ifndef CMUSAVACAPABILITYEXCHANGE_H
+#define CMUSAVACAPABILITYEXCHANGE_H
+
+#include <e32base.h>    // CBase
+#include "musunittesting.h"
+
+class MMusAvaCapabilityQueryObserver;
+class CMusAvaCapabilityQueryBase;
+class CSIPClientTransaction;
+class CSIPServerTransaction;
+class CMusAvaTerminal;
+class CMusAvaCapability;
+
+/**
+ * Capability Exchange
+ *
+ * @lib musavailabilityplugin.dll
+ */
+class CMusAvaCapabilityExchange : public CBase
+    {
+
+public: // constructors and destructor
+
+    static CMusAvaCapabilityExchange* NewL( const TDesC8& aTerminalId,
+                            MMusAvaCapabilityQueryObserver& aQueryObserver );
+
+    virtual ~CMusAvaCapabilityExchange();
+
+
+private: // constructors
+
+    CMusAvaCapabilityExchange( 
+                            MMusAvaCapabilityQueryObserver& aQueryObserver );
+
+    void ConstructL( const TDesC8& aTerminalId );
+
+
+public: // new functions
+
+
+    /**
+     * Returns query observer
+     *
+     * @return query observer
+     */
+    MMusAvaCapabilityQueryObserver& QueryObserver() const;
+    
+    /**
+     * Returns terminal ID
+     *
+     * @return terminal ID
+     */
+    const TDesC8& TerminalId() const;
+
+    /**
+     * Called when answer to query has been received
+     *
+     * @param aResponse SIP client transaction representing 
+     * the response to query
+     */
+    void AnswerToQueryReceived( const CSIPClientTransaction& aResponse );
+
+    /**
+     * Called when capability query has been received
+     *
+     * @param aQuery SIP server transaction representing
+     * a capability query, ownership is transferred
+     */
+    void QueryReceived( CSIPServerTransaction* aQuery );
+
+    /**
+     * Called when capability query has been canceled
+     *
+     * @param aError system wide or SIP error code
+     * @param aTransaction SIP client transaction 
+     */
+    void CancelQuery( TInt aError, const CSIPClientTransaction& aTransaction );
+
+
+public: // new functions
+
+    
+    /**
+     * Adds capability
+     *
+     * @param aCapability a capability, ownership is transferred
+     */
+    void AddCapabilityL( CMusAvaCapability* aCapability );
+
+    /**
+     * Returns all discovered terminals
+     * 
+     * @return all discovered terminals
+     */
+    const RPointerArray<CMusAvaTerminal>& Terminals();
+
+    /**
+     * Returns all capabilities
+     * 
+     * @return all capabilities
+     */
+    const RPointerArray<CMusAvaCapability>& Capabilities();
+
+    
+public: // for internal use only
+
+    /**
+     * Returns terminal based on remote URI
+     *
+     * @return terminal based on remote URI
+     */
+    CMusAvaTerminal& TerminalL( const TDesC8& aRemoteUri );
+    
+    
+private: // new functions
+
+    CMusAvaTerminal& TerminalL( const CSIPServerTransaction& aQuery );
+    void DoQueryReceivedL( CSIPServerTransaction& aQuery );
+    void RejectQueryL( CSIPServerTransaction& aQuery,
+                       TInt aError );
+    TInt FindByFeature( CMusAvaCapability& aCapablity );
+    
+    
+private: // data
+
+    MMusAvaCapabilityQueryObserver& iQueryObserver;
+    HBufC8* iTerminalId;
+    RPointerArray<CMusAvaTerminal> iTerminals;
+    RPointerArray<CMusAvaCapability> iCapabilities;
+
+    MUS_UNITTEST ( UT_CMusAvaCapabilityExchange )
+    MUS_UNITTEST ( UT_CMusAvaCapabilitySipAgent )
+    };
+
+
+#endif // CMUSAVACAPABILITYEXCHANGE_H