udp-client.cc

/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2007,2008,2009 INRIA, UDCAST
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author: Amine Ismail <amine.ismail@sophia.inria.fr>
 *                      <amine.ismail@udcast.com>
 */
#include "ns3/log.h"
#include "ns3/ipv4-address.h"
#include "ns3/nstime.h"
#include "ns3/inet-socket-address.h"
#include "ns3/inet6-socket-address.h"
#include "ns3/socket.h"
#include "ns3/simulator.h"
#include "ns3/socket-factory.h"
#include "ns3/packet.h"
#include "ns3/uinteger.h"
#include "udp-client.h"
#include "seq-ts-header.h"
#include <cstdlib>
#include <cstdio>

namespace ns3
{

    NS_LOG_COMPONENT_DEFINE("UdpClient");

    NS_OBJECT_ENSURE_REGISTERED(UdpClient);

    TypeId
    UdpClient::GetTypeId(void) {
        static TypeId tid = TypeId("ns3::UdpClient")
                .SetParent<Application> ()
                .SetGroupName("Applications")
                .AddConstructor<UdpClient> ()
                .AddAttribute("MaxPackets",
                "The maximum number of packets the application will send",
                UintegerValue(100),
                MakeUintegerAccessor(&UdpClient::m_count),
                MakeUintegerChecker<uint32_t> ())
                .AddAttribute("Interval",
                "The time to wait between packets", TimeValue(Seconds(1.0)),
                MakeTimeAccessor(&UdpClient::m_interval),
                MakeTimeChecker())
                .AddAttribute("RemoteAddress",
                "The destination Address of the outbound packets",
                AddressValue(),
                MakeAddressAccessor(&UdpClient::m_peerAddress),
                MakeAddressChecker())
                .AddAttribute("RemotePort", "The destination port of the outbound packets",
                UintegerValue(100),
                MakeUintegerAccessor(&UdpClient::m_peerPort),
                MakeUintegerChecker<uint16_t> ())
                .AddAttribute("PacketSize",
                "Size of packets generated. The minimum packet size is 12 bytes which is the size of the header carrying the sequence number and the time stamp.",
                UintegerValue(1024),
                MakeUintegerAccessor(&UdpClient::m_size),
                MakeUintegerChecker<uint32_t> (12, 1500))
                ;
        return tid;
    }

    UdpClient::UdpClient() {
        NS_LOG_FUNCTION(this);
        m_sent = 0;
        m_socket = 0;
        m_sendEvent = EventId();
    }

    UdpClient::~UdpClient() {
        NS_LOG_FUNCTION(this);
    }

    void
    UdpClient::SetRemote(Ipv4Address ip, uint16_t port) {
        NS_LOG_FUNCTION(this << ip << port);
        m_peerAddress = Address(ip);
        m_peerPort = port;
    }

    void
    UdpClient::SetRemote(Ipv6Address ip, uint16_t port) {
        NS_LOG_FUNCTION(this << ip << port);
        m_peerAddress = Address(ip);
        m_peerPort = port;
    }

    void
    UdpClient::SetRemote(Address ip, uint16_t port) {
        NS_LOG_FUNCTION(this << ip << port);
        m_peerAddress = ip;
        m_peerPort = port;
    }

    void
    UdpClient::DoDispose(void) {
        NS_LOG_FUNCTION(this);
        Application::DoDispose();
    }

    void
    UdpClient::StartApplication(void) {
        NS_LOG_FUNCTION(this);

        if (m_socket == 0) {
            TypeId tid = TypeId::LookupByName("ns3::UdpSocketFactory");
            m_socket = Socket::CreateSocket(GetNode(), tid);
            if (Ipv4Address::IsMatchingType(m_peerAddress) == true) {
                m_socket->Bind();
                m_socket->Connect(InetSocketAddress(Ipv4Address::ConvertFrom(m_peerAddress), m_peerPort));
            } else if (Ipv6Address::IsMatchingType(m_peerAddress) == true) {
                m_socket->Bind6();
                m_socket->Connect(Inet6SocketAddress(Ipv6Address::ConvertFrom(m_peerAddress), m_peerPort));
            }
        }

        m_socket->SetRecvCallback(MakeNullCallback<void, Ptr<Socket> > ());
        m_sendEvent = Simulator::Schedule(Seconds(0.0), &UdpClient::Send, this);
    }

    void
    UdpClient::StopApplication(void) {
        NS_LOG_FUNCTION(this);
        Simulator::Cancel(m_sendEvent);
    }

    void
    UdpClient::Send(void) {
        NS_LOG_FUNCTION(this);
        NS_ASSERT(m_sendEvent.IsExpired());
        SeqTsHeader seqTs;
        seqTs.SetSeq(m_sent);
        Ptr<Packet> p = Create<Packet> (m_size - (8 + 4)); // 8+4 : the size of the seqTs header
        p->AddHeader(seqTs);

        std::stringstream peerAddressStringStream;
        if (Ipv4Address::IsMatchingType(m_peerAddress)) {
            peerAddressStringStream << Ipv4Address::ConvertFrom(m_peerAddress);
        } else if (Ipv6Address::IsMatchingType(m_peerAddress)) {
            peerAddressStringStream << Ipv6Address::ConvertFrom(m_peerAddress);
        }

        if ((m_socket->Send(p)) >= 0) {
            ++m_sent;
            NS_LOG_INFO("TraceDelay TX " << m_size << " bytes to "
                    << peerAddressStringStream.str() << " Uid: "
                    << p->GetUid() << " Time: "
                    << (Simulator::Now()).GetSeconds());

        } else {
            NS_LOG_INFO("Error while sending " << m_size << " bytes to "
                    << peerAddressStringStream.str());
        }

        if (m_sent < m_count) {
            m_sendEvent = Simulator::Schedule(m_interval, &UdpClient::Send, this);
        }
    }

} // Namespace ns3