phonebookui/Phonebook2/ccapplication/ccapp/ccaclient/src/ccaconnection.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 19 Feb 2010 22:40:27 +0200
branchRCL_3
changeset 3 04ab22b956c2
parent 0 e686773b3f54
child 64 c1e8ba0c2b16
permissions -rw-r--r--
Revision: 201003 Kit: 201007
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/*
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* Copyright (c) 2007 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:  CCA client's connecting class.
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*
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*/
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#include <e32std.h>
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#include <s32mem.h>
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#include <aknappui.h>
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#include "ccaclientheaders.h"
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/// Unnamed namespace for local definitions
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namespace {
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const TInt KCCAStreamBufferSize = 256;
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const TInt KCCAConnectionMaxRetriesForLaunchKErrInUse = 5;
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const TInt KCCAConnectionRelaunchDelay = 0.2 * 1000000;// 0.2 sec
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#ifdef _DEBUG
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enum TPanicCode
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    {
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    EPanicPreCond_DoLaunchL = 1,
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    EPanicPreCond_DoLaunchL2,
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    EPanicPreCond_DoLaunchL3
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    };
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void Panic(TPanicCode aReason)
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    {
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    _LIT(KPanicText, "CCCAConnection");
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    User::Panic(KPanicText, aReason);
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    }
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#endif // _DEBUG
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} /// namespace
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// ================= MEMBER FUNCTIONS =======================
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//
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// ----------------------------------------------------------
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// CCCAConnection::NewL
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// ----------------------------------------------------------
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//
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CCCAConnection* CCCAConnection::NewL()
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    {
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    CCA_DP(KCCAClientLoggerFile, CCA_L( "CCCAConnection::NewL"));
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    CCCAConnection* self = new (ELeave) CCCAConnection();
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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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// CCCAConnection::CCCAConnection
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// ----------------------------------------------------------
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//
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CCCAConnection::CCCAConnection() :
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    CActive( EPriorityStandard ),
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    iAppStatus( EAppClosed ),
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    iMsgStreamPtr( NULL, 0 )
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    {
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    CCA_DP(KCCAClientLoggerFile, CCA_L( "CCCAConnection::CCCAConnection"));
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    CActiveScheduler::Add( this );
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    }
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// ----------------------------------------------------------
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// CCCAConnection::ConstructL
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// ----------------------------------------------------------
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//
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void CCCAConnection::ConstructL()
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    {
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    CCA_DP(KCCAClientLoggerFile, CCA_L( "CCCAConnection::ConstructL"));
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    iSchedulerWait = new ( ELeave ) CActiveSchedulerWait();
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    }
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// ----------------------------------------------------------
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// CCCAConnection::~CCCAConnection
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// ----------------------------------------------------------
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//
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CCCAConnection::~CCCAConnection()
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    {
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    CCA_DP(KCCAClientLoggerFile, CCA_L( "CCCAConnection::~CCCAConnection"));
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    Cancel();
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    delete iSchedulerWait;
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    delete iMsgStream;
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    DisconnectServerApplication();
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    CloseParameter();
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    }
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// ----------------------------------------------------------
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// CCCAConnection::Close
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// ----------------------------------------------------------
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//
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void CCCAConnection::Close()
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    {
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    CCA_DP(KCCAClientLoggerFile, CCA_L( "CCCAConnection::Close"));
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    delete this;
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    }
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   115
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// --------------------------------------------------------------------------
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// CCCAConnection::RunL
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// --------------------------------------------------------------------------
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//
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void CCCAConnection::RunL()
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    {
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    CCA_DP(KCCAClientLoggerFile, CCA_L( "CCCAConnection::RunL: iStatus: %d"), iStatus.Int());
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    if ( iSchedulerWait->IsStarted() )
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        {
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        iSchedulerWait->AsyncStop();
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        }
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    }
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// --------------------------------------------------------------------------
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// CCCAConnection::DoCancel
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// --------------------------------------------------------------------------
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//
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void CCCAConnection::DoCancel()
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    {
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    CCA_DP(KCCAClientLoggerFile, CCA_L( "CCCAConnection::DoCancel"));
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    if ( iSchedulerWait->IsStarted() )
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        {
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        iSchedulerWait->AsyncStop();
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        }
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    }
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   141
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// ----------------------------------------------------------
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// CCCAConnection::LaunchApplicationL
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// ----------------------------------------------------------
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//
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void CCCAConnection::LaunchApplicationL( MCCAParameter& aParameter )
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    {
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    CCA_DP(KCCAClientLoggerFile, CCA_L( "->CCCAConnection::LaunchApplicationL"));
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    //Only one active connection per time
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    __ASSERT_ALWAYS( iAppStatus == EAppClosed, User::Leave( KErrAlreadyExists ));
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    iAppStatus = EAppLaunching;
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   154
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    //PERFORMANCE LOGGING: 1. Starting AppServer (StartPoint)
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    WriteToPerfLog();
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    WriteToPerfLaunchLog(_L(" CCA launched"));
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   158
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    // Need to trap, because consumer freezes if ConnectL function leaves.
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    // Reason for the freeze is that connection stays open.
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    TRAPD( error, ConnectServerApplicationL() );
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    if ( KErrNone != error )
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        {
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        CCA_DP(KCCAClientLoggerFile, CCA_L( "::LaunchApplicationL: Error connect: %d"), error);
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        DisconnectServerApplication();
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        User::Leave( error );
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        }
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   168
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    DoLaunchL( aParameter );
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    SetActive();
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    iSchedulerWait->Start();
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   172
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    error = iStatus.Int();
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    if ( KErrNone != error )
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        {
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        CCA_DP(KCCAClientLoggerFile, CCA_L( "::LaunchApplicationL: Error launch: %d"), error);
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        DisconnectServerApplication();
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        User::Leave( error );
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        }
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    iAppStatus = EAppRunning;
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   182
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    CCA_DP(KCCAClientLoggerFile, CCA_L( "<-CCCAConnection::LaunchApplicationL"));
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    }
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   185
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// ----------------------------------------------------------
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// CCCAConnection::LaunchAppL
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// ----------------------------------------------------------
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//
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void CCCAConnection::LaunchAppL(
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    MCCAParameter& aParameter,
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    MCCAObserver* aObserver )
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    {
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    CCA_DP(KCCAClientLoggerFile, CCA_L( "->CCCAConnection::LaunchAppL"));
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   195
    
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    if (iAppStatus == EAppClosed)
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        {
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        LaunchApplicationL( aParameter );
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   199
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        CloseParameter();
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        iParameter = static_cast<CCCAParameter*>( &aParameter );
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        iObserver = aObserver;
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        }
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    CCA_DP(KCCAClientLoggerFile, CCA_L( "<-CCCAConnection::LaunchAppL"));
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    }
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   207
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// --------------------------------------------------------------------------
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// CCCAConnection::CloseAppL
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// --------------------------------------------------------------------------
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//
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void CCCAConnection::CloseAppL()
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    {
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    if ( !iClosePending ) //To protect from duplicate close attempts
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        {
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        iAppService.DoCloseApplication(); 
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        iClosePending = ETrue;
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        }
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    }
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   220
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// --------------------------------------------------------------------------
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// CCCAConnection::HandleServerAppExit
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// --------------------------------------------------------------------------
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//
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void CCCAConnection::HandleServerAppExit( TInt aReason )
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    {
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    CCA_DP(KCCAClientLoggerFile, CCA_L( "->CCCAConnection::HandleServerAppExit"));
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    CCA_DP(KCCAClientLoggerFile, CCA_L( "::HandleServerAppExit: aReason: %d"), aReason);
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   229
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    DisconnectServerApplication();
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	TInt flags(0);
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	if(iParameter)
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	    {
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	    flags = iParameter->ConnectionFlag();
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	    }
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    if ( iObserver )
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        {
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        CCA_DP(KCCAClientLoggerFile, CCA_L( "::HandleServerAppExit - informing observer about exit"));
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        CloseParameter();
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        TRAP_IGNORE( iObserver->CCASimpleNotifyL( MCCAObserver::EExitEvent, aReason ));
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        iObserver = NULL;
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        }
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3
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    iClosePending = EFalse; 
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0
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    //Kill us if not soft exit requested
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    if(!(flags & MCCAParameter::ESoftExit))    
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        {
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		//Kill this process, i.e. the application running ccaclient
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	    // Following call ends application if aReason == EAknCmdExit (and does nothing else)
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        MAknServerAppExitObserver::HandleServerAppExit( aReason );
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        }
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3
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0
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   CCA_DP(KCCAClientLoggerFile, CCA_L( "<-CCCAConnection::HandleServerAppExit"));
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    }
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// --------------------------------------------------------------------------
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// CCCAConnection::DisconnectServerApplication
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// --------------------------------------------------------------------------
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//
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void CCCAConnection::DisconnectServerApplication()
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    {
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    CCA_DP(KCCAClientLoggerFile, CCA_L( "->CCCAConnection::DisconnectServerApplication"));
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   267
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    delete iMonitor;
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    iMonitor = NULL;
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    iAppService.Close();
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    iAppStatus = EAppClosed;
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    CCA_DP(KCCAClientLoggerFile, CCA_L( "<-CCCAConnection::DisconnectServerApplication"));
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    }
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// --------------------------------------------------------------------------
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// CCCAConnection::ConnectServerApplicationL
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// --------------------------------------------------------------------------
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//
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void CCCAConnection::ConnectServerApplicationL()
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    {
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    CCA_DP(KCCAClientLoggerFile, CCA_L( "->CCCAConnection::ConnectServerApplicationL"));
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    /*
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     * In cases when the CCApplication is running on background and connection
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     * is closed and reopened instantly, the opening of connection returns
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     * sometimes KErrInUse. One solution could be to arrange Rendezvous-signals
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     * between processes, but to keep implementation somewhat simple, launch is
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     * now just tried again couple of times with small delay between.
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     */
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    TInt error = KErrInUse;
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    for ( TInt i = 0; i < KCCAConnectionMaxRetriesForLaunchKErrInUse && 
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            (KErrNotFound == error || KErrInUse == error); i++ )
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        {
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        TRAP( error, iAppService.DoConnectL());
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        CCA_DP(KCCAClientLoggerFile, CCA_L( "::ConnectServerApplicationL: error: %d i: %d"), error, i );
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        if ( KErrInUse == error &&
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             i < KCCAConnectionMaxRetriesForLaunchKErrInUse - 1 )
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            {
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            User::After( KCCAConnectionRelaunchDelay );
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            }
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        }
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    User::LeaveIfError( error );
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   304
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    delete iMonitor;
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    iMonitor = NULL;
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    iMonitor = CApaServerAppExitMonitor::NewL(
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   308
        iAppService, *this, CActive::EPriorityStandard );
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   309
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    CCA_DP(KCCAClientLoggerFile, CCA_L( "<-CCCAConnection::ConnectServerApplicationL"));
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    }
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   312
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// --------------------------------------------------------------------------
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// CCCAConnection::DoLaunchL
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// --------------------------------------------------------------------------
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   316
//
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void CCCAConnection::DoLaunchL( MCCAParameter& aParameter )
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    {
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   319
    CCA_DP(KCCAClientLoggerFile, CCA_L( "->CCCAConnection::DoLaunchL"));
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   320
    __ASSERT_DEBUG( &aParameter, Panic(EPanicPreCond_DoLaunchL) );
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   321
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   322
    CCCAParameter& param = STATIC_CAST(CCCAParameter&, aParameter);
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   323
    CBufSeg* buf1 = CBufSeg::NewL( KCCAStreamBufferSize );
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   324
    CleanupStack::PushL( buf1 );
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   325
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   326
    RBufWriteStream writeStream( *buf1 );
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   327
    CleanupClosePushL( writeStream );
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   328
    param.ExternalizeL( writeStream );
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   329
    writeStream.CommitL();
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   330
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   331
    delete iMsgStream;
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    iMsgStream = NULL;
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   333
    iMsgStreamPtr.Set( NULL, 0, 0 );
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   334
    
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   335
    const TInt neededSize = buf1->Size();
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   336
    iMsgStream = HBufC8::NewL( neededSize );
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   337
    iMsgStreamPtr.Set( iMsgStream->Des() );    
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   338
    buf1->Read( 0, iMsgStreamPtr, neededSize );
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diff changeset
   339
    CleanupStack::PopAndDestroy(2); //buf1, writeStream
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diff changeset
   340
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diff changeset
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    __ASSERT_DEBUG( 0 < iMsgStreamPtr.Size(), Panic(EPanicPreCond_DoLaunchL3) );
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    iStatus = KRequestPending;
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    iAppService.DoLaunch( iStatus, iMsgStreamPtr );
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    CCA_DP(KCCAClientLoggerFile, CCA_L( "<-CCCAConnection::DoLaunchL"));
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    }
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// ----------------------------------------------------------
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// CCCAConnection::CloseParameter
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// ----------------------------------------------------------
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//
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void CCCAConnection::CloseParameter( )
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    {
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    CCA_DP(KCCAClientLoggerFile, CCA_L( "CCCAConnection::CloseParameter"));
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    if ( iParameter )
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        {
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        iParameter->Close();
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        iParameter = NULL;
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        }
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    }
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// End of file