localconnectivityservice/dun/client/src/dunclient.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 18 Jan 2010 21:03:15 +0200
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/*
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* Copyright (c) 2006-2007 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:  Main client side interface of DUN
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*
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*/
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#include "dunclient.h"
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#include "dunserverdef.h"
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#include "DunDebug.h"
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#include "dunactive.h"
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const TInt KDunRetryCount        = 3;
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const TInt KDunNumOfMessageSlots = 4;
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// ======== LOCAL FUNCTIONS ========
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// ---------------------------------------------------------------------------
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// Create server thread/process
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// ---------------------------------------------------------------------------
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//
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static TInt StartServer()
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    {
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    FTRACE(FPrint( _L("StartServer()") ));
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    TInt retVal = KErrNone;
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    TRequestStatus statusStarted;
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    RProcess server;
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    retVal = server.Create( KDialupServerName, KNullDesC, EOwnerThread );
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    if ( retVal != KErrNone )
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        {
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        FTRACE(FPrint( _L("StartServer() complete (%d)"), retVal ));
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        return retVal;
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        }
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    TRequestStatus stat;
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    server.Rendezvous( stat );
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    if ( stat != KRequestPending )
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        {
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        server.Kill( 0 );  //abort startup
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        }
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    else
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        {
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        server.Resume(); //logon OK - start the server
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        }
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    User::WaitForRequest( stat ); //wait the start or death of the server
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    /*
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    we can't use the 'exit reason' if the server panicked as this
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    is the panic 'reason' and may be '0' which cannot be distinguished
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    from KErrNone
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    */
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    retVal = stat.Int();
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    if ( server.ExitType() == EExitPanic )
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        {
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        retVal = KErrServerTerminated;
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        }
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    server.Close();
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    FTRACE(FPrint( _L("StartServer() complete (%d)"), retVal ));
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    return retVal;
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    }
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// ======== MEMBER FUNCTIONS ========
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// ---------------------------------------------------------------------------
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// RDun::RDun()
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// ---------------------------------------------------------------------------
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//
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RDun::RDun()
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    {
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    }
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// ---------------------------------------------------------------------------
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// This function starts DUN open/close for different medias
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// ---------------------------------------------------------------------------
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//
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TInt RDun::ManageService( MDunActive* aRequest, TRequestStatus& aReqStatus )
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    {
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    FTRACE(FPrint( _L("RDun::ManageService()") ));
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    SendReceive( EDunFuncManageService,
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                 TIpcArgs(aRequest->Bearer(),
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                          aRequest->BearerStatus()),
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                 aReqStatus );
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    FTRACE(FPrint( _L("RDun::ManageService() complete") ));
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    return KErrNone;
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    }
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// ---------------------------------------------------------------------------
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// This function gets the active connection
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// ---------------------------------------------------------------------------
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//
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TAny* RDun::ActiveConnection()
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    {
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    FTRACE(FPrint( _L("RDun::ActiveConnection()") ));
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    TAny* connId = NULL;
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    TPckg<TAny*> connIdPckg( connId );
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    SendReceive( EDunFuncActiveConnection,
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                 TIpcArgs(&connIdPckg) );
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    FTRACE(FPrint( _L("RDun::ActiveConnection() complete") ));
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    return connId;
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    }
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// ---------------------------------------------------------------------------
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// Version number
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// ---------------------------------------------------------------------------
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//
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TVersion RDun::Version() const
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    {
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    FTRACE(FPrint( _L("RDun::Version()") ));
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    FTRACE(FPrint( _L("RDun::Version() complete") ));
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    return ( TVersion(KDunServerMajorVersionNumber,
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                      KDunServerMinorVersionNumber,
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                      KDunServerBuildVersionNumber) );
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    }
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// ---------------------------------------------------------------------------
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// This function connects to DUN server and creates a new session.
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// ---------------------------------------------------------------------------
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//
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TInt RDun::Connect()
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    {
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    FTRACE(FPrint( _L("RDun::Connect()") ));
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    TInt retry;
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    TInt retVal = KErrNone;
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    for ( retry=KDunRetryCount; retry>=0; retry-- )
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        {
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        retVal=CreateSession( KDialupServerName,
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                              TVersion(KDunServerMajorVersionNumber,
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                                       KDunServerMinorVersionNumber,
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                                       KDunServerBuildVersionNumber),
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                              KDunNumOfMessageSlots );
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        if ( retVal == KErrNotFound || retVal == KErrServerTerminated )
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            {
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            retVal = StartServer();
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            if ( retVal!=KErrNone && retVal!=KErrAlreadyExists )
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                {
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                FTRACE(FPrint( _L("RDun::Connect() complete (%d)"), retVal ));
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                return retVal;
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                }
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            }
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        else // KErrNone, or other error code.
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            {
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            FTRACE(FPrint( _L("RDun::Connect() complete (%d)"), retVal ));
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            return retVal;
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            }
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        }
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    FTRACE(FPrint( _L("RDun::Connect() complete (%d)"), retVal ));
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    return retVal;
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    }