/*

* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Client side session to the Location Centre server.

*

*/

// SYSTEM INCLUDES

// USER INCLUDES

#include "lcclientsession.h"

// CONSTANT DEFINTIONS

const TInt KNumofConnectAttempts = 200;

// ----- Member funtions for RLcClientSession ---------------------------------

// ---------------------------------------------------------------------------

// RLcClientSession::RLcClientSession

// ---------------------------------------------------------------------------

//

RLcClientSession::RLcClientSession()

    {

    // C++ Default constructor. No allocations or functions which can Leave

    // should be called from here.

    }

// ---------------------------------------------------------------------------

// RLcClientSession::~RLcClientSession

// ---------------------------------------------------------------------------

//

RLcClientSession::~RLcClientSession()

    {

    // C++ Destructor. Free all resources associated with this class.

    }

// ---------------------------------------------------------------------------

// RLcClientSession::~RLcClientSession

// ---------------------------------------------------------------------------

//

TInt RLcClientSession::CreateSession()

    {

    TInt error = KErrNone;

    // Attempt KNumofConnectAttempts to make a connection to the server

    for ( TInt i = 0; i <= KNumofConnectAttempts; i++ )

    	{

    	error = RSessionBase::CreateSession( 

    	                            KLocationCentreServerName, 

    	                            TVersion( KLcServerMajorVersionNumber,

                                              KLcServerMinorVersionNumber,

                                              KLcServerBuildVersionNumber ),

                                    8);

    	if ( error != KErrNotFound && error != KErrServerTerminated )

    		{

    		// If the Create session returns an error code other than

    		// KErrNotFound or KErrServerTerminated, then the request

    		// is terminated immediately with the error code.

    		// If it is any of these error codes then the server is

    		// not running. In this case, try to start the server

    		return error;

    		}

    	error = StartServer();

    	if ( error != KErrAlreadyExists && error != KErrNone)

    		{

            // Server returned error code other than KErrAlreadyExists

            // or KErrNone. The request is terminated with this

            // error code.

            // If the error code is one of these then the server is

            // up and running. Now try to establish the connection.

    		return error;

    		}

    	}

    return error; 

    }

// ---------------------------------------------------------------------------

// RLcClientSession::~RLcClientSession

// ---------------------------------------------------------------------------

//    

void RLcClientSession::Close()

    {

    RHandleBase::Close();

    }

// ---------------------------------------------------------------------------

// RLcClientSession::SendReceive

// ---------------------------------------------------------------------------

//    

void RLcClientSession::SendReceive(       TLcServerMsgType    aMsgType, 

                                    const TIpcArgs&           aArgs,

                                          TRequestStatus&     aStatus ) const

    {

    return RSessionBase::SendReceive( aMsgType,

                                      aArgs,

                                      aStatus );    

    }

// ---------------------------------------------------------------------------

// RLcClientSession::SendReceive

// ---------------------------------------------------------------------------

//    

TInt RLcClientSession::SendReceive(       TLcServerMsgType    aMsgType, 

                                    const TIpcArgs&           aArgs ) const

    {

    return RSessionBase::SendReceive( aMsgType,

                                      aArgs );

    }

// ---------------------------------------------------------------------------

// RLcClientSession::SendReceive

// ---------------------------------------------------------------------------

//    

void RLcClientSession::SendReceive( TLcServerMsgType    aMsgType,

                                    TRequestStatus&     aStatus ) const

    {

    return RSessionBase::SendReceive( aMsgType, aStatus );    

    }

// ---------------------------------------------------------------------------

// RLcClientSession::SendReceive

// ---------------------------------------------------------------------------

//    

TInt RLcClientSession::SendReceive( TLcServerMsgType    aMsgType ) const

    {

    return RSessionBase::SendReceive( aMsgType );

    }

// ---------------------------------------------------------------------------

// RLcClientSession::StartServer

// ---------------------------------------------------------------------------

//    

TInt RLcClientSession::StartServer()

    {

    // Create a new server process.

    // If the server is already running then the function fails with

    // KErrAlreadyExists

    RProcess server;

    TInt error = server.Create( KLocationCentreServerExe,

                                KNullDesC );

    if ( !error )

        {

        TRequestStatus died;

        server.Rendezvous( died );

        if ( died != KRequestPending )

            {

            // Logon failed - Server is not yet running, so cannot have terminated

            User::WaitForRequest( died );           // Eat signal

            server.Kill( 0 );                       // Abort startup

            }

        else

            {

            server.Resume();

            User::WaitForRequest( died );           // Wait for start or death

            }

        // We can't use the 'exit reason' if the server panicked as this

        // is the panic 'reason' and may be '0' which cannot be distinguished

        // from KErrNone

        error = ( server.ExitType() == EExitPanic ) ? KErrGeneral : died.Int();

        server.Close();

        }

    return error;      

    }                                                                                                              

// End of File