driverbase.cpp

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/*
 * driverbase.cpp,v 1.5 2003/11/25 19:29:56 mattid Exp
 *
 * COBAIN - Communications API for EPOC Environments
 * Copyright (C) 2002 Matti Dahlbom, Matti Kokkola
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Contact: Matti Dahlbom <matti@777-team.org>
 *          Matti Kokkola <matti.kokkola@iki.fi>
 */

#include "driverbase.h"
#include "clientsession.h"

CDriverBase::CDriverBase(RCobainClientSession &aClientSession,
                         TProtocol aProtocol)
    : iClientSession(aClientSession),
      iProtocol(aProtocol),
      iPeerListPump(aProtocol, aClientSession)
{
}

CDriverBase::~CDriverBase()
{
    CCobainLayer::Log(_L("~CDriverBase()"));

    // cancel possibly pending peer list retrieval
    iPeerListPump.Cancel();

    if( iConnectionListener != NULL ) {
        StopListeningL();
    }
}

void CDriverBase::ListenL(TUint aPort, MConnectionListener *aListener)
{
    // check there is no pending listen
    __ASSERT_ALWAYS(iConnectionListener == NULL, User::Leave(KErrDriverAlreadyListening));

    // create connection listener
    iConnectionListener = new (ELeave) CConnectionListener(iClientSession, this);

    // synchronous call to start listening
    iClientSession.StartListening(iProtocol, aPort);
        
    // launch connection listening active object
    iConnectionListener->Listen(aListener);
}

void CDriverBase::StopListeningL()
{
    // check there is a pending listen
    __ASSERT_ALWAYS(iConnectionListener != NULL, User::Leave(KErrDriverNotListening));

    CCobainLayer::Log(_L("CDriverBase::StopListening()"));

    // cancel pending listen operation (will call server to cancel serverside)
    iConnectionListener->Cancel();

    CCobainLayer::Log(_L("deleting iConnectionListener"));
    delete iConnectionListener;
    iConnectionListener;

    // no more connections will be received
    iListener = NULL;
}

void CDriverBase::DiscoverPeersL(TUint aServiceClassID, MNetworkDriverListener *aListener)
{
    iPeerListPump.DiscoverPeers(aServiceClassID, aListener);
}

void CDriverBase::CancelPeerDiscovery()
{
    iPeerListPump.Cancel();
}

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