User Manual, Developers Guide and API Documentation

UDP.cpp

Go to the documentation of this file.

/*******************************************************************************
 * This file is part of openWNS (open Wireless Network Simulator)
 * _____________________________________________________________________________
 *
 * Copyright (C) 2004-2007
 * Chair of Communication Networks (ComNets)
 * Kopernikusstr. 16, D-52074 Aachen, Germany
 * phone: ++49-241-80-27910,
 * fax: ++49-241-80-22242
 * email: info@openwns.org
 * www: http://www.openwns.org
 * _____________________________________________________________________________
 *
 * openWNS is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License version 2 as published by the
 * Free Software Foundation;
 *
 * openWNS 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 program.  If not, see <http://www.gnu.org/licenses/>.
 *
 ******************************************************************************/

#include <SIMPLETL/service/UDP.hpp>
#include <SIMPLETL/service/Connection.hpp>
#include <SIMPLETL/Routing.hpp>
#include <SIMPLETL/SimpleTL.hpp>
#include <WNS/service/tl/FlowID.hpp>
#include <WNS/service/qos/QoSClasses.hpp>
#include <WNS/module/Module.hpp>
#include <WNS/logger/Master.hpp>

using namespace simpletl;

UDP::UDP(const wns::pyconfig::View& _pyco)
    : pyco(_pyco),
      eventscheduler(wns::simulator::getEventScheduler()),
      registered(false),
      logger("SimpleTL", "UDP",
             wns::simulator::getMasterLogger())
{
    portPool = new wns::service::tl::PortPool(pyco.get<simTimeType>("portUnbindDelay"));
}

UDP::~UDP()
{
    delete portPool;
}

void UDP::openConnection(wns::service::tl::Port _port,
                         wns::service::nl::FQDN _source,
                         wns::service::nl::FQDN _peerInstance,
                        wns::service::qos::QoSClass /*_qosClass*/,
                         wns::service::tl::ConnectionHandler* _ch)
{
    wns::service::tl::ConnectionHandler* peerconnectionhandler =
        Routing::getService(_peerInstance, _port);

    wns::service::tl::Port sourcePort = portPool->suggestPort();
    portPool->bind(sourcePort);

    wns::service::tl::FlowID flowID ( wns::service::nl::Address(_source), sourcePort, wns::service::nl::Address(_peerInstance),_port );
    // UDP-Header: 8 Byte, IP-Header: 20 Byte -> 224 Bit
    Bit headerLength = 224;

    Connection* local = new Connection(_ch, flowID, headerLength);
    Connection* peer = new Connection(peerconnectionhandler, local->swappedFlowID(), headerLength);

    local->setPeer(peer);
    peer->setPeer(local);

    MESSAGE_SINGLE(NORMAL, logger, "Opening connection for flow ID: " << flowID);

    _ch->onConnectionEstablished(wns::service::nl::Address(_source), local);
}

void UDP::closeConnection(wns::service::tl::Connection* _connection)
{
    assureType(_connection, Connection*);
    Connection* local = static_cast<Connection*>(_connection);

    local->getConnectionHandler()->onConnectionClosed(_connection);

    assureType(_connection, Connection*);
    MESSAGE_SINGLE(NORMAL, logger, "Closing connection for flowID: "
                   << static_cast<Connection*>(_connection)->getFlowID());
    delete _connection;
}

void UDP::listenOnPort(wns::service::tl::Port _port, wns::service::tl::ConnectionHandler* _ch)
{
    wns::service::nl::FQDN domainName =
        wns::service::nl::FQDN(pyco.get<std::string>("domainName"));

    if (!registered)
    {
        Routing::registerIP(domainName);
        registered = true;
    }

    Routing::setService(domainName, _port, _ch);
}

---