bluetoothengine/bteng/btengconnman/src/btengconnhandler.cpp
author hgs
Fri, 03 Sep 2010 16:17:59 +0300
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parent 28 7e2761e776bd
child 56 9386f31cc85b
permissions -rw-r--r--
201035_7
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/*
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* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  Implements the actual connection management, and receives 
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*                notifications of Bluetooth connection events.
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*
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*/
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#include <e32base.h>
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#include "btengconnhandler.h"
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#include "btengconnman.h"
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#include "debug.h"
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/**  ID to identify the outstanding asynchronous request. */
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enum TRequestId
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    {
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    EConnectionEventId = 50,
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    EPairDeviceId
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    };
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/**  Max. number of addresses that can be passed to the server
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     side for getting connected addresses */
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const TInt KBTEngMaxAddrArraySize = 10;
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// ======== MEMBER FUNCTIONS ========
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// ---------------------------------------------------------------------------
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// C++ default constructor
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// ---------------------------------------------------------------------------
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//
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CBTEngConnHandler::CBTEngConnHandler( MBTEngConnObserver* aObserver )
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:   iObserver( aObserver )
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    {
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    }
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// ---------------------------------------------------------------------------
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// Symbian 2nd-phase constructor
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// ---------------------------------------------------------------------------
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//
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void CBTEngConnHandler::ConstructL()
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    {
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    TRACE_FUNC_ENTRY
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    User::LeaveIfError( iBTEng.Connect() );
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    if( iObserver )
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        {
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        NotifyConnectionEvents( iObserver );
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        }
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    TRACE_FUNC_EXIT
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    }
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// ---------------------------------------------------------------------------
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// NewL
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// ---------------------------------------------------------------------------
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//
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CBTEngConnHandler* CBTEngConnHandler::NewL( MBTEngConnObserver* aObserver )
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    {
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    CBTEngConnHandler* self = new( ELeave ) CBTEngConnHandler( aObserver );
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    CleanupStack::PushL( self );
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    self->ConstructL();
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    CleanupStack::Pop( self );
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    return self;
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    }
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// ---------------------------------------------------------------------------
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// Destructor
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// ---------------------------------------------------------------------------
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//
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CBTEngConnHandler::~CBTEngConnHandler()
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    {
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    TRACE_FUNC_ENTRY
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    CancelNotifyConnectionEvents();
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    iBTEng.Close();
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    }
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// ---------------------------------------------------------------------------
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// Gets the connected device addresses; If a profile is defined, only 
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// connections for that profile are returned.
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// ---------------------------------------------------------------------------
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//
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void CBTEngConnHandler::GetConnectedAddressesL( RBTDevAddrArray& aAddrArray, 
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    TBTProfile aConnectedProfile )
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    {
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    aAddrArray.Reset();
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    TInt devAddrSize = sizeof( TBTDevAddr );
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    HBufC8* addrBuf = HBufC8::NewLC( KBTEngMaxAddrArraySize * devAddrSize );
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    TPtr8 ptr = addrBuf->Des();
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    TPckgBuf<TInt> profilePkg( aConnectedProfile );
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    User::LeaveIfError( iBTEng.GetConnectedAddresses( ptr, profilePkg ) );
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    while( ptr.Length() >= KBTDevAddrSize )
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        {
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        TBTDevAddr addr( ptr.Mid( ptr.Length() - devAddrSize, KBTDevAddrSize ) );
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		ptr.SetLength( Max( ptr.Length() - devAddrSize, 0 ) );
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		aAddrArray.Append( addr );
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		}
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    CleanupStack::PopAndDestroy( addrBuf );
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    }
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// ---------------------------------------------------------------------------
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// ?implementation_description
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// ---------------------------------------------------------------------------
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//
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TInt CBTEngConnHandler::NotifyConnectionEvents( MBTEngConnObserver* aObserver )
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    {
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    TRACE_FUNC_ENTRY
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    ASSERT( aObserver );
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    iObserver = aObserver;
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    TInt err = KErrNone;
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    if( iConnEventActive && iConnEventActive->IsActive() )
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        {
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        CancelNotifyConnectionEvents();
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        }
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    if( !iConnEventActive )
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        {
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            // Use a higher prioritty than normal, because we want 
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            // to be notified fast (e.g. to update the UI).
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        TRAP( err, iConnEventActive = CBTEngActive::NewL( *this, EConnectionEventId, 
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                                                  CActive::EPriorityUserInput ) );
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        }
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    if( !err && iConnEventActive->RequestStatus() != KErrServerTerminated )
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        {
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        err = iBTEng.NotifyConnectionEvents( iEventPkg, iConnEventActive->RequestStatus() );
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		if( !err )
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			{
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			iConnEventActive->GoActive();
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			}
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        }
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    return err;
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    }
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// ---------------------------------------------------------------------------
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// ?implementation_description
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// ---------------------------------------------------------------------------
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//
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void CBTEngConnHandler::CancelNotifyConnectionEvents()
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    {
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    TRACE_FUNC_ENTRY
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    delete iConnEventActive;
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    iConnEventActive = NULL;
0
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    }
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// ---------------------------------------------------------------------------
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// From class MBTEngActiveObserver.
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// Called by the active object when a change in connection status has occured.
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// ---------------------------------------------------------------------------
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//
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void CBTEngConnHandler::RequestCompletedL( CBTEngActive* aActive, 
0
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    TInt aStatus )
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    {
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    TRACE_FUNC_ARG( ( _L( "ID: %d status: %d" ), aActive->RequestId(), aStatus ) )
0
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    (void) aActive;
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    ASSERT( aActive->RequestId() == EConnectionEventId );
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    HandleConnectionEvent( aStatus );
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    TRACE_FUNC_EXIT
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    }
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// ---------------------------------------------------------------------------
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// From class MBTEngActiveObserver.
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// Handles cancelation of an outstanding request
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// ---------------------------------------------------------------------------
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//
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void CBTEngConnHandler::CancelRequest( TInt aRequestId )
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    {
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    TRACE_FUNC_ARG( ( _L( "reqID %d" ), aRequestId ) )
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    ASSERT( aRequestId == EConnectionEventId );
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    ( void ) aRequestId;
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    iBTEng.CancelNotifyConnectionEvents();
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    TRACE_FUNC_EXIT 
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    }
0
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// ---------------------------------------------------------------------------
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// From class MBTEngActiveObserver.
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// Called when RequestCompletedL/RunL leaves.
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// ---------------------------------------------------------------------------
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//
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void CBTEngConnHandler::HandleError( CBTEngActive* aActive, TInt aError )
0
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    {
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    TRACE_FUNC_ARG( ( _L( "error: %d" ), aError ) )
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        // Should any info be passed to the client??
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    (void) aActive;
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    (void) aError;
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    }
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void CBTEngConnHandler::HandleConnectionEvent( TInt aStatus )
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    {
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    TBTDevAddr addr;
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    RBTDevAddrArray conflictsArray;
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    TBTEngConnectionStatus connStatus = EBTEngNotConnected;
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        // Subscribe to the next event first.
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    (void) NotifyConnectionEvents( iObserver );
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    addr = iEventPkg().iAddr;
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    connStatus = iEventPkg().iConnEvent;
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    if( iEventPkg().iConflictsBuf.Length() > 0 )
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        {
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            // Parse conflicts array buffer
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        TInt devAddrSize = sizeof( TBTDevAddr );
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        while( iEventPkg().iConflictsBuf.Length() >= KBTDevAddrSize )
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            {
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            TInt len = iEventPkg().iConflictsBuf.Length();
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            TPtrC8 ptr = iEventPkg().iConflictsBuf.Mid( len - devAddrSize, 
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                                                         KBTDevAddrSize );
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            TBTDevAddr addr( ptr );
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            conflictsArray.Append( addr );
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            iEventPkg().iConflictsBuf.SetLength( Max( len - devAddrSize, 0 ) );
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            }
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        }
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    switch( connStatus )
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        {
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            // The enumeration allows for more information than can be
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            // signalled to the client. Anyway allow for all cases.
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        case EBTEngNotConnected:
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        case EBTEngDisconnecting:
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            {
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            // Add device address logging here!
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            TRACE_INFO( ( _L( "[BTENG]\t device X disconnected" ) ) )
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            iObserver->DisconnectComplete( addr, aStatus );
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            }
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            break;
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        case EBTEngConnecting:
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        case EBTEngConnected:
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            {
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                // Note! Even though the status can say connected, it can 
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                // mean that the device is not connected because an error 
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                // occurred during connection establishment!
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            // Add device address logging here!
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            TRACE_INFO( ( _L( "[BTENG]\t device X connected" ) ) )
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			if ( conflictsArray.Count() )
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			    {
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		        iObserver->ConnectComplete( addr, aStatus, &conflictsArray );
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		        }
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			else
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   247
			    {
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				iObserver->ConnectComplete( addr, aStatus, NULL );
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				}
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            }
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            break;
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parents:
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        default:
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parents:
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            {
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            TRACE_INFO( ( _L( "[BTENG]\t Wrong connection status (%d)!!" ), 
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                          connStatus ) )
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parents:
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            }
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parents:
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            break;
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parents:
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   258
        }
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parents:
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    conflictsArray.Close();
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parents:
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   260
 
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parents:
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    }