/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
* Copyright 2007 University of Washington
*
* 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
*/
#include "ns3/log.h"
#include "ns3/ipv4-address.h"
#include "ns3/nstime.h"
#include "ns3/inet-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-echo-server.h"
namespace ns3 {
NS_LOG_COMPONENT_DEFINE ("UdpEchoServerApplication");
NS_OBJECT_ENSURE_REGISTERED (UdpEchoServer);
TypeId
UdpEchoServer::GetTypeId (void)
{
static TypeId tid = TypeId ("ns3::UdpEchoServer")
.SetParent<Application> ()
.AddConstructor<UdpEchoServer> ()
.AddAttribute ("Port", "Port on which we listen for incoming packets.",
UintegerValue (9),
MakeUintegerAccessor (&UdpEchoServer::m_port),
MakeUintegerChecker<uint16_t> ())
;
return tid;
}
UdpEchoServer::UdpEchoServer ()
{
NS_LOG_FUNCTION_NOARGS ();
}
UdpEchoServer::~UdpEchoServer()
{
NS_LOG_FUNCTION_NOARGS ();
}
void
UdpEchoServer::DoDispose (void)
{
NS_LOG_FUNCTION_NOARGS ();
Application::DoDispose ();
}
void
UdpEchoServer::StartApplication (void)
{
NS_LOG_FUNCTION_NOARGS ();
if (!m_socket)
{
TypeId tid = TypeId::LookupByName ("ns3::Udp");
m_socket = Socket::CreateSocket (GetNode(), tid);
InetSocketAddress local = InetSocketAddress (Ipv4Address::GetAny (), m_port);
m_socket->Bind (local);
}
m_socket->SetRecvCallback(MakeCallback(&UdpEchoServer::HandleRead, this));
}
void
UdpEchoServer::StopApplication ()
{
NS_LOG_FUNCTION_NOARGS ();
if (!m_socket)
{
m_socket->SetRecvCallback(MakeNullCallback<void, Ptr<Socket> > ());
}
}
void
UdpEchoServer::HandleRead (Ptr<Socket> socket)
{
Ptr<Packet> packet;
while (packet = socket->Recv ())
{
SocketRxAddressTag tag;
bool found = packet->PeekTag (tag);
NS_ASSERT (found);
Address from = tag.GetAddress ();
packet->RemoveTag (tag);
if (InetSocketAddress::IsMatchingType (from))
{
InetSocketAddress address = InetSocketAddress::ConvertFrom (from);
NS_LOG_INFO ("Received " << packet->GetSize() << " bytes from " <<
address.GetIpv4());
NS_LOG_LOGIC ("Echoing packet");
socket->SendTo (from, packet);
}
}
}
} // Namespace ns3