bluetoothengine/bteng/btengdiscovery/src/btengdevicesearch.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:  Helper class implementation for performing device discovery.
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*
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*/
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#include "btengdevicesearch.h"
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#include "btengdiscovery.h"
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#include "debug.h"
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/**
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 * the request ID for device search using RNotifer.
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 */
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const TInt KDevSearchAoReqId = 40;
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/*
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 * the request ID for EIR service uuids using host resolver
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 */
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const TInt KDevEirServiceListAoReqId = 41;
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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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CBTEngDeviceSearch::CBTEngDeviceSearch()
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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 CBTEngDeviceSearch::ConstructL()
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    {
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    User::LeaveIfError( iNotifier.Connect() );
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    iActive = CBTEngActive::NewL( *this, KDevSearchAoReqId, 
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                                   CActive::EPriorityStandard );
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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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CBTEngDeviceSearch* CBTEngDeviceSearch::NewL()
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    {
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    CBTEngDeviceSearch* self = new( ELeave ) CBTEngDeviceSearch();
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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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CBTEngDeviceSearch::~CBTEngDeviceSearch()
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    {
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    delete iActive;
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    iNotifier.Close();
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    iHostResolver.Close();
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    iSocketServer.Close();
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    }
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// ---------------------------------------------------------------------------
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// Start the device discovery notifier.
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// ---------------------------------------------------------------------------
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//
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TInt CBTEngDeviceSearch::StartSearch( CBTDevice* aDevice, TNameEntry* aNameEntry,
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    const TBTDeviceClass& aDeviceClass, MBTEngSdpResultReceiver* aNotifier )
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    {
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    TRACE_FUNC_ENTRY
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    TInt err ( KErrNone );
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    if( iActive->IsActive() )
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        {
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        err = KErrInUse;
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        }
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    if( !err && !iNotifier.Handle() )
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        {
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        err = iNotifier.Connect();
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        }
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    if( !err )
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        {
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        iClientReq = EDeviceSearch;
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        iResultNotifier = aNotifier;
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        iNameEntry = aNameEntry;
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        iDevice = aDevice;
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            // Selection parameters
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        TBTDeviceSelectionParams params;
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        params.SetDeviceClass( aDeviceClass );
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        iSelectionPckg = TBTDeviceSelectionParamsPckg( params );
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            // Response parameters
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        TBTDeviceResponseParams result;
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        iResponsePckg = TBTDeviceResponseParamsPckg( result );
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        iActive->SetRequestId( KDevSearchAoReqId );
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        iNotifier.StartNotifierAndGetResponse( iActive->RequestStatus(), 
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                                                KDeviceSelectionNotifierUid, 
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                                                iSelectionPckg, iResponsePckg );
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        iActive->GoActive();
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        }
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    TRACE_FUNC_EXIT
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    return err;
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    }
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// ---------------------------------------------------------------------------
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// Cancel an ongoing device discovery.
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// ---------------------------------------------------------------------------
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//
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void CBTEngDeviceSearch::CancelSearch()
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    {
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    TRACE_FUNC_ENTRY
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    if( iActive->IsActive() && iClientReq == EDeviceSearch)
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        {
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        iActive->Cancel();
0
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        if (iActive->RequestId() == KDevSearchAoReqId)
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            {
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            iNotifier.Close();
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            NotifyClient(KErrAbort);
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            }
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        else if (iActive->RequestId() == KDevEirServiceListAoReqId)
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            {
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            iHostResolver.Close();
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            }
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        }
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    TRACE_FUNC_EXIT
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    }
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// ---------------------------------------------------------------------------
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// Get cached EIR data from host resolver and extract service uuids
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// ---------------------------------------------------------------------------
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//
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TInt CBTEngDeviceSearch::GetEirServiceUUIDs( const TBTDevAddr& aAddr, 
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        TNameEntry* aNameEntry, MBTEngSdpResultReceiver* aNotifier)
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    {
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    TRACE_FUNC_ENTRY
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    TInt err = KErrNone;
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    if( iActive->IsActive() )
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        {
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        err = KErrInUse;
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        }
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    if (!err)
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        {
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        iClientReq = EGetDeviceEir;
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        iResultNotifier = aNotifier;
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        iNameEntry = aNameEntry;
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        err = DoGetDeviceEir(aAddr);
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        }
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    TRACE_FUNC_EXIT
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    return err;
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    }
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// ---------------------------------------------------------------------------
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// Cancel an ongoing EIR services retieval.
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// ---------------------------------------------------------------------------
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//
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void CBTEngDeviceSearch::CancelGetEirServiceUUIDs()
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    {
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    TRACE_FUNC_ENTRY
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    if( iActive->IsActive() && iClientReq == EGetDeviceEir)
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        {
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        iActive->Cancel();
0
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        iHostResolver.Close();
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        }
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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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// Callback to notify that an outstanding request has completed.
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// ---------------------------------------------------------------------------
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//
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void CBTEngDeviceSearch::RequestCompletedL( CBTEngActive* aActive, 
0
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    TInt aStatus )
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    {
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    TRACE_FUNC_ARG( ( _L( "status: %d") , aStatus ) )
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    (void) aActive;
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    if ( aActive->RequestId() == KDevSearchAoReqId )
0
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        {
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        HandleDeviceSelectionResultL(aStatus);
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        }
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    else if ( aActive->RequestId() == KDevEirServiceListAoReqId )
0
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        {
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        HandleDeviceEirDataResult( aStatus );
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        }
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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 CBTEngDeviceSearch::CancelRequest( TInt aRequestId )
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    {
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    TRACE_FUNC_ARG( ( _L( "reqID %d" ), aRequestId ) )
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    if ( aRequestId == KDevSearchAoReqId )
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   213
        {
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        iNotifier.CancelNotifier( KDeviceSelectionNotifierUid );
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        }
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    else if ( aRequestId == KDevEirServiceListAoReqId )
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        {
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        iHostResolver.Cancel();
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        }
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    TRACE_FUNC_EXIT 
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    }
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// ---------------------------------------------------------------------------
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// From class MBTEngActiveObserver.
0
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// Callback to notify that an error has occurred in RunL.
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// ---------------------------------------------------------------------------
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//
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void CBTEngDeviceSearch::HandleError( CBTEngActive* aActive, 
0
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    TInt aError )
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    {
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    TRACE_FUNC_ARG( ( _L( "error: %d") , aError ) )
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    (void) aActive;
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    iNotifier.Close();
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    iHostResolver.Close();
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    NotifyClient(aError);
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    }
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// ---------------------------------------------------------------------------
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// get device eir from cache
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// ---------------------------------------------------------------------------
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//
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TInt CBTEngDeviceSearch::DoGetDeviceEir(const TBTDevAddr& aAddr)
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    {
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    TRACE_FUNC_ENTRY
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    TInt err (KErrNone);
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    if (!iSocketServer.Handle())
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        {
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        err = iSocketServer.Connect();
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        }
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    TProtocolDesc pInfo;
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    if (!err)
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        {
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        _LIT(KBTLinkManagerProtocol, "BTLinkManager");
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        err =  iSocketServer.FindProtocol( KBTLinkManagerProtocol(), pInfo );
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        }
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    if (!err)
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        {
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        err = iHostResolver.Open(iSocketServer, pInfo.iAddrFamily, pInfo.iProtocol);
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        }
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    if( !err )
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        {
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        iInquirySockAddr = TInquirySockAddr();
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        iInquirySockAddr.SetBTAddr(aAddr );
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        iInquirySockAddr.SetAction( KHostResCache );
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        iActive->SetRequestId( KDevEirServiceListAoReqId );
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        iHostResolver.GetByAddress( iInquirySockAddr, *iNameEntry, iActive->RequestStatus() );
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        iActive->GoActive();
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        }
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    TRACE_FUNC_EXIT
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    return err;
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    }
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   273
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void CBTEngDeviceSearch::HandleDeviceSelectionResultL(TInt aErr)
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    {
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    TRACE_FUNC_ENTRY
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    TInt err (aErr);
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    iNotifier.Close();
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    if (!err)
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        {
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        // Copy information to returned device
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        iDevice->SetDeviceAddress( iResponsePckg().BDAddr() );
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        iDevice->SetDeviceNameL( BTDeviceNameConverter::ToUTF8L( 
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                                                iResponsePckg().DeviceName() ) );
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        iDevice->SetDeviceClass( iResponsePckg().DeviceClass() );  
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        }
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    if (!err && iNameEntry)
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        {
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        err = DoGetDeviceEir(iResponsePckg().BDAddr());
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        }
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   291
    // if an error happens, or the caller doesn't need the EIR part, complete
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    // the request. Otherwise the client will be called after getting EIR 
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    // completes.
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   294
    if (err || !iNameEntry)
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   295
        {
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   296
        NotifyClient(err);
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   297
        }
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    TRACE_FUNC_EXIT
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   299
    }
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   300
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// ---------------------------------------------------------------------------
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// extracting service uuids from the device EIR data returned by host resolver
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// ---------------------------------------------------------------------------
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//
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   305
void CBTEngDeviceSearch::HandleDeviceEirDataResult(TInt aErr)
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   306
    {
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   307
    TRACE_FUNC_ENTRY
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   308
    iHostResolver.Close();
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   309
    
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   310
    if ( iClientReq == EDeviceSearch)
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   311
        {
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        // Device search has already completed correctly, so 
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        // we don't pass GetEir error 
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   314
        NotifyClient( KErrNone );
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   315
        }
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   316
    else
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parents:
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   317
        {
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   318
        NotifyClient( aErr );
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parents:
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   319
        }
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   320
    TRACE_FUNC_EXIT
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   321
    }
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   322
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   323
// ---------------------------------------------------------------------------
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   324
// Callback to notify that the caller's request has completed.
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   325
// ---------------------------------------------------------------------------
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   326
//
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   327
void CBTEngDeviceSearch::NotifyClient(TInt aErr)
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parents:
diff changeset
   328
    {
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   329
    TRACE_FUNC_ENTRY
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   330
    if( iResultNotifier && iClientReq == EDeviceSearch)
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parents:
diff changeset
   331
        {
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diff changeset
   332
        if (iNameEntry)
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parents:
diff changeset
   333
            {
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diff changeset
   334
            iResultNotifier->DeviceSearchComplete( iDevice, iNameEntry, aErr );
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parents:
diff changeset
   335
            }
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parents:
diff changeset
   336
        else
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parents:
diff changeset
   337
            {
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diff changeset
   338
            iResultNotifier->DeviceSearchComplete( iDevice, aErr );
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parents:
diff changeset
   339
            }
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parents:
diff changeset
   340
        }
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parents:
diff changeset
   341
    if (iResultNotifier && iClientReq == EGetDeviceEir)
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parents:
diff changeset
   342
        {
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parents:
diff changeset
   343
        iResultNotifier->GetEirServiceUUIDsComplete(iNameEntry, aErr);
f63038272f30 Revision: 201001
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parents:
diff changeset
   344
        }
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parents:
diff changeset
   345
    TRACE_FUNC_EXIT
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parents:
diff changeset
   346
    }
f63038272f30 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   347