hxsymbiantcpsock.cpp

linux下的一款播放器

        return m_lRefCount;
    }

    delete this;
    return 0;
}

    /*
     *	IHXTCPSocket methods
     *
     *  Network addresses and ports are in native byte order
     *
     */

STDMETHODIMP HXSymbianTCPSocket::Init(THIS_
				      IHXTCPResponse* /*IN*/ pTCPResponse)
{
    DPRINTF(D_TCPSOCKET, ("HXSymbianTCPSocket::Init()\n"));

    HX_RELEASE(m_pResponse);

    m_pResponse = pTCPResponse;

    if (m_pResponse)
	m_pResponse->AddRef();

    return (m_pResponse) ? HXR_OK : HXR_FAILED;
}

STDMETHODIMP HXSymbianTCPSocket::SetResponse(THIS_
					     IHXTCPResponse* pTCPResponse)
{
    DPRINTF(D_TCPSOCKET, ("HXSymbianTCPSocket::SetResponse()\n"));

    HX_RELEASE(m_pResponse);

    m_pResponse = pTCPResponse;

    if (m_pResponse)
	m_pResponse->AddRef();

    return (m_pResponse) ? HXR_OK : HXR_FAILED;
}

STDMETHODIMP HXSymbianTCPSocket::Bind(THIS_
				      UINT32 ulLocalAddr,
				      UINT16 nPort)
{
    DPRINTF(D_TCPSOCKET, ("HXSymbianTCPSocket::Bind(%08lx, %u)\n",
			  ulLocalAddr, nPort));

    HX_RESULT res = HXR_FAILED;
    TInetAddr addr(ulLocalAddr, nPort);

    if ((m_state == tcpInitialized) &&
	(m_socket.Bind(addr) == KErrNone))
    {
	m_state = tcpBound;
	res = HXR_OK;
    }

    return res;
}

    /*
     * pDestination is a string containing host name or dotted-ip notation
     */
STDMETHODIMP HXSymbianTCPSocket::Connect(THIS_
					 const char* pDestination,
					 UINT16 nPort)
{
    DPRINTF(D_TCPSOCKET, ("HXSymbianTCPSocket::Connect('%s', %u)\n",
			  pDestination, nPort));

    HX_RESULT res = HXR_FAILED;

    if (m_state == tcpInitialized)
	Bind(0, 0);

    if (m_state == tcpBound)
    {
	m_state = tcpResolving;
	m_nConnectPort = nPort;

	res = m_pResolver->GetHostByName(pDestination);

	if (HXR_OK != res)
	{
	    m_state = tcpBound;
	}
    }

    return res;
}

STDMETHODIMP HXSymbianTCPSocket::Read(THIS_ UINT16 Size)
{
    DPRINTF(D_TCPSOCKET, ("HXSymbianTCPSocket::Read(%u)\n", Size));

    HX_RESULT res = HXR_FAILED;

    HX_ASSERT(m_state == tcpConnected);

    if ((m_state == tcpConnected) && (!m_pReader->IsActive()))
    {
	res = DoRead(Size);
    }

    return res;
}

STDMETHODIMP HXSymbianTCPSocket::Write(THIS_ IHXBuffer*	pBuffer)
{
    DPRINTF(D_TCPSOCKET, ("HXSymbianTCPSocket::Write()\n"));

    HX_RESULT res = HXR_FAILED;

    HX_ASSERT(m_state == tcpConnected);

    if ((m_state == tcpConnected) && pBuffer)
    {
	if (m_pWriter->IsActive())
	{
	    // A write is in progress. Add the buffer
	    // to the write list
	    pBuffer->AddRef();
	    LISTPOSITION listRet = m_writeList.AddTail(pBuffer);
            if( listRet == NULL )
            {
                res = HXR_OUTOFMEMORY;
                HX_RELEASE(pBuffer);
            }
	}
	else
	{
	    // Do the write now
	    m_pWriter->Write(m_socket, pBuffer);
	}

	res = HXR_OK;
    }

    return res;
}

    /************************************************************************
     *	Method:
     *	    IHXTCPSocket::WantWrite
     *	Purpose:
     *	    This method is called when you wish to write a large amount of
     *	    data.  If you are only writing small amounts of data, you can
     *	    just call Write (all data not ready to be transmitted will be
     *	    buffered on your behalf).  When the TCP channel is ready to be
     *	    written to, the response interfaces WriteReady method will be
     *	    called.
     */
STDMETHODIMP HXSymbianTCPSocket::WantWrite(THIS)
{
    DPRINTF(D_TCPSOCKET, ("HXSymbianTCPSocket::WantWrite()\n"));

    m_bWantWrite = TRUE;

    return HXR_OK;
}

    /************************************************************************
     *	Method:
     *	    IHXTCPSocket::GetForeignAddress
     *	Purpose:
     *	    Returns the address of the other end of the TCP socket as a
     *	    ULONG32 in local host order
     */
STDMETHODIMP HXSymbianTCPSocket::GetForeignAddress(THIS_ REF(ULONG32) lAddress)
{
    DPRINTF(D_TCPSOCKET, ("HXSymbianTCPSocket::GetForeignAddress()\n"));

    HX_RESULT res = HXR_FAILED;

    if (m_state == tcpConnected)
    {
	TInetAddr addr;
	m_socket.RemoteName(addr);

	lAddress = (ULONG32)addr.Address();

	res = HXR_OK;
    }

    return res;
}

STDMETHODIMP HXSymbianTCPSocket::GetLocalAddress(THIS_ REF(ULONG32) lAddress)
{
    DPRINTF(D_TCPSOCKET, ("HXSymbianTCPSocket::GetLocalAddress()\n"));

    HX_RESULT res = HXR_FAILED;

    if ((m_state != tcpNotInitialized) &&
	(m_state != tcpInitialized))
    {
	TInetAddr addr;
	m_socket.LocalName(addr);

	lAddress = (ULONG32)addr.Address();

	res = HXR_OK;
    }

    return res;
}

    /************************************************************************
     *	Method:
     *	    IHXTCPSocket::GetForeignPort
     *	Purpose:
     *	    Returns the port of the other end of the TCP socket in local
     *      host order.
     */
STDMETHODIMP HXSymbianTCPSocket::GetForeignPort(THIS_ REF(UINT16) port)
{
    DPRINTF(D_TCPSOCKET, ("HXSymbianTCPSocket::GetForeignPort()\n"));

    HX_RESULT res = HXR_FAILED;

    if (m_state == tcpConnected)
    {
	TInetAddr addr;
	m_socket.RemoteName(addr);

	port = addr.Port();

	res = HXR_OK;
    }

    return res;
}

STDMETHODIMP HXSymbianTCPSocket::GetLocalPort(THIS_ REF(UINT16) port)
{
    DPRINTF(D_TCPSOCKET, ("HXSymbianTCPSocket::GetLocalPort()\n"));

    HX_RESULT res = HXR_FAILED;

    if ((m_state != tcpNotInitialized) &&
	(m_state != tcpInitialized))
    {
	port = m_socket.LocalPort();

	res = HXR_OK;
    }

    return res;
}

STDMETHODIMP HXSymbianTCPSocket::SetOption(THIS_
					   HX_SOCKET_OPTION option,
					   UINT32 ulValue)
{
    DPRINTF(D_TCPSOCKET, ("HXSymbianTCPSocket::SetOption(%d, %lu)\n",
			  option, ulValue));
    HX_RESULT res = HXR_FAILED;

    if (m_state == tcpNotInitialized)
    {
	switch(option)
	{
	case  HX_SOCKOPT_REUSE_ADDR:
	case HX_SOCKOPT_REUSE_PORT:
	    if (m_socket.SetOpt(KSoReuseAddr, KSOLSocket, ulValue) == KErrNone)
	    {
		res = HXR_OK;
	    }
	    break;
	case HX_SOCKOPT_BROADCAST:
	case HX_SOCKOPT_SET_RECVBUF_SIZE:
	case HX_SOCKOPT_SET_SENDBUF_SIZE:
	case HX_SOCKOPT_MULTICAST_IF:
	    res = HXR_UNEXPECTED;
	    break;
	default:
	    res = HXR_FAILED;
	    break;
	};
    }

    return res;
}

HX_RESULT HXSymbianTCPSocket::GetHostByNameDone(HX_RESULT status,
						ULONG32 ulAddr)
{
    DPRINTF(D_TCPSOCKET, ("HXSymbianTCPSocket::ResolveDone(%ld, %08lx)\n",
			  status, ulAddr));

    HX_ASSERT(m_state == tcpResolving);

    DECLARE_SMART_POINTER_UNKNOWN scopeRef((IHXTCPSocket*)this);

    if (m_state == tcpResolving)
    {
	if (status == HXR_OK)
	{
	    m_pConnector->Connect(m_socket, ulAddr, m_nConnectPort);

	    m_state = tcpConnecting;
	}
	else if (m_pResponse)
	{
	    m_pResponse->ConnectDone(status);
	    m_state = tcpBound;
	}
    }

    return HXR_OK;
}

void HXSymbianTCPSocket::OnConnect(HX_RESULT status)
{
    DPRINTF(D_TCPSOCKET, ("HXSymbianTCPSocket::OnConnect(%ld)\n",
			  status));

    HX_ASSERT(m_state == tcpConnecting);

    DECLARE_SMART_POINTER_UNKNOWN scopeRef((IHXTCPSocket*)this);

    if (status == HXR_OK)
    {
	m_state = tcpConnected;
    }
    else
    {
	m_state = tcpBound;
    }

    if (m_pResponse)
    {
	m_pResponse->ConnectDone(status);
    }
}

void HXSymbianTCPSocket::OnWriteDone(HX_RESULT status)
{
    DPRINTF(D_TCPSOCKET, ("HXSymbianTCPSocket::OnWriteDone(%ld)\n", status));

    DECLARE_SMART_POINTER_UNKNOWN scopeRef((IHXTCPSocket*)this);

    if (status == HXR_OK)
    {
	if (m_writeList.GetCount() > 0)
	{
	    // Write the next buffer in the list
	    IHXBuffer* pBuffer = (IHXBuffer*)m_writeList.RemoveHead();

	    m_pWriter->Write(m_socket, pBuffer);

	    HX_RELEASE(pBuffer);
	}

	// Signal WriteReady() if we don't have any
	// writes pending and the response object
	// wants these calls
	if (!m_pWriter->IsActive() && m_bWantWrite && m_pResponse)
	{
	    m_pResponse->WriteReady(HXR_OK);
	}
    }
    else
    {
	CloseConnection(status);
    }
}

void HXSymbianTCPSocket::OnReadDone(HX_RESULT status, IHXBuffer* pBuffer)
{
    DPRINTF(D_TCPSOCKET, ("HXSymbianTCPSocket::OnReadDone(%ld)\n", status));

    DECLARE_SMART_POINTER_UNKNOWN scopeRef((IHXTCPSocket*)this);

    if (m_pResponse)
    {
        // We assume error reporting/handling is done in the response object
        // via the value of status passed here.
	m_pResponse->ReadDone(status, pBuffer);
    }

    if (status != HXR_OK)
    {
	CloseConnection(status);
    }
}

HX_RESULT HXSymbianTCPSocket::DoRead(UINT16 size)
{
    DPRINTF(D_TCPSOCKET, ("HXSymbianTCPSocket::DoRead(%u)\n", size));

    HX_RESULT res = HXR_FAILED;

    if (m_pReader)
    {
        res = m_pReader->Read(m_socket, size);
    }

    return res;
}

void HXSymbianTCPSocket::CloseConnection(HX_RESULT status)
{
    DPRINTF(D_TCPSOCKET, ("HXSymbianTCPSocket::CloseConnection(%ld)\n",
			  status));

    if (m_state != tcpNotInitialized)
    {
	// Cancel any connector
	if (m_pConnector->IsActive())
	{
	    m_socket.CancelConnect();
	    m_pConnector->Cancel();
	}

	// Cancel writer
	if (m_pWriter->IsActive())
	{
	    m_socket.CancelWrite();
	    m_pWriter->Cancel();
	}

	if (m_pReader->IsActive())
	{
	    m_socket.CancelRecv();
	    m_pReader->Cancel();
	}

	// Clear the writer list
	while (m_writeList.GetCount() > 0)
	{
	    // Write the next buffer in the list
	    IHXBuffer* pBuffer = (IHXBuffer*)m_writeList.RemoveHead();

	    HX_RELEASE(pBuffer);
	}

	if ((m_state != tcpInitialized) && m_pResponse)
	{
	    m_pResponse->Closed(HXR_OK);
	}

	m_state = tcpInitialized;
    }
}