cobainsocket.cpp

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/*
 * cobainsocket.cpp,v 1.21 2004/01/10 14:27:11 mattid Exp
 *
 * COBAIN - Communications API for EPOC Environments
 * Copyright (C) 2002-2004 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 "cobain.h"
#include "clientsession.h"

RCobainSocket::RCobainSocket(RCobainClientSession &aSession,
                             TInt aId)
    : CActive(CActive::EPriorityStandard),
      iSession(aSession),
      iId(aId),
      iIsClosed(EFalse)
{
    CActiveScheduler::Add(this);
}

EXPORT_C RCobainSocket::~RCobainSocket()
{
    // close the socket 
    Close(ETrue);

    // mark the listener null as it is not used any more
    iSocketListener = NULL;
}

EXPORT_C void RCobainSocket::SendL(const TDesC8 *aBuffer)
{
    if( iIsClosed ) {
        User::Leave(KErrCobainSocketClosed);
    }

    TInt ret = iSession.Send(iId, aBuffer);
    if( (iSocketListener != NULL) && (ret != KErrNone) ) {
        iSocketListener->SocketError(ret, this);
    }
}

EXPORT_C void RCobainSocket::Close(TBool aImmediately)
{
    if( iIsClosed ) {
        // already closed
        return;
    }

    // close the network connection
    iSession.CloseSocket(iId, aImmediately);

    // stop receiving data
    Cancel();

    // mark the socket closed
    iIsClosed = ETrue;
}

EXPORT_C void RCobainSocket::SetSocketListener(MSocketListener *aSocketListener)
{
    __ASSERT_ALWAYS(aSocketListener != NULL,
                    User::Panic(KCobainSocketPanic, KErrCobainSocketNullSocketListener));

    // cancel the existing request if any 
    Cancel();

    iSocketListener = aSocketListener;

    // start receiving data
    Receive();
}

// launches asynchronous call to receive data
void RCobainSocket::Receive()
{
    Log::Print(_L("RCobainSocket::Receive()"));

    iSession.Receive(iId, &iRecvBuf, iStatus);
    SetActive();

    Log::Print(_L("RCobainSocket::Receive() exiting"));
}

// from CActive

void RCobainSocket::DoCancel() 
{
}

// data available
void RCobainSocket::RunL() 
{
    Log::Print(_L("RCobainSocket::RunL()"));

    // assert there is a socket listener
    if( iSocketListener == NULL ) {
        return;
    }

    TInt status = iStatus.Int();
    if( status != KErrNone ) {
        // notify the socket listener
        if( status == KErrDisconnected ) {
            // close this socket
            Close();
            iSocketListener->SocketDisconnected(this);
        } else {
            iSocketListener->SocketError(status, this);
        }
    } else {
        // hand the data over to the listener
        iSocketListener->Data(iRecvBuf, this);

        // receive some more
        Receive();
    }

    Log::Print(_L("RCobainSocket::RunL() exiting"));
}

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