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00019 #include "ns3/log.h"
00020 #include "ns3/ipv4-address.h"
00021 #include "ns3/nstime.h"
00022 #include "ns3/inet-socket-address.h"
00023 #include "ns3/socket.h"
00024 #include "ns3/simulator.h"
00025 #include "ns3/socket-factory.h"
00026 #include "ns3/packet.h"
00027 #include "ns3/uinteger.h"
00028
00029 #include "udp-echo-server.h"
00030
00031 namespace ns3 {
00032
00033 NS_LOG_COMPONENT_DEFINE ("UdpEchoServerApplication");
00034 NS_OBJECT_ENSURE_REGISTERED (UdpEchoServer);
00035
00036 TypeId
00037 UdpEchoServer::GetTypeId (void)
00038 {
00039 static TypeId tid = TypeId ("ns3::UdpEchoServer")
00040 .SetParent<Application> ()
00041 .AddConstructor<UdpEchoServer> ()
00042 .AddAttribute ("Port", "Port on which we listen for incoming packets.",
00043 UintegerValue (9),
00044 MakeUintegerAccessor (&UdpEchoServer::m_port),
00045 MakeUintegerChecker<uint16_t> ())
00046 ;
00047 return tid;
00048 }
00049
00050 UdpEchoServer::UdpEchoServer ()
00051 {
00052 NS_LOG_FUNCTION_NOARGS ();
00053 }
00054
00055 UdpEchoServer::~UdpEchoServer()
00056 {
00057 NS_LOG_FUNCTION_NOARGS ();
00058 }
00059
00060 void
00061 UdpEchoServer::DoDispose (void)
00062 {
00063 NS_LOG_FUNCTION_NOARGS ();
00064 Application::DoDispose ();
00065 }
00066
00067 void
00068 UdpEchoServer::StartApplication (void)
00069 {
00070 NS_LOG_FUNCTION_NOARGS ();
00071
00072 if (m_socket == 0)
00073 {
00074 TypeId tid = TypeId::LookupByName ("ns3::UdpSocketFactory");
00075 m_socket = Socket::CreateSocket (GetNode(), tid);
00076 InetSocketAddress local = InetSocketAddress (Ipv4Address::GetAny (), m_port);
00077 m_socket->Bind (local);
00078 }
00079
00080 m_socket->SetRecvCallback(MakeCallback(&UdpEchoServer::HandleRead, this));
00081 }
00082
00083 void
00084 UdpEchoServer::StopApplication ()
00085 {
00086 NS_LOG_FUNCTION_NOARGS ();
00087
00088 if (m_socket != 0)
00089 {
00090 m_socket->SetRecvCallback(MakeNullCallback<void, Ptr<Socket> > ());
00091 }
00092 }
00093
00094 void
00095 UdpEchoServer::HandleRead (Ptr<Socket> socket)
00096 {
00097 Ptr<Packet> packet;
00098 Address from;
00099 while (packet = socket->RecvFrom (from))
00100 {
00101 if (InetSocketAddress::IsMatchingType (from))
00102 {
00103 InetSocketAddress address = InetSocketAddress::ConvertFrom (from);
00104 NS_LOG_INFO ("Received " << packet->GetSize() << " bytes from " <<
00105 address.GetIpv4());
00106
00107 packet->RemoveAllTags ();
00108
00109 NS_LOG_LOGIC ("Echoing packet");
00110 socket->SendTo (packet, 0, from);
00111 }
00112 }
00113 }
00114
00115 }