void Ping6::StartApplication ()
{
NS_LOG_FUNCTION_NOARGS ();
if (!m_socket)
{
TypeId tid = TypeId::LookupByName ("ns3::Ipv6RawSocketFactory");
m_socket = Socket::CreateSocket (GetNode (), tid);
NS_ASSERT (m_socket);
m_socket->Bind (Inet6SocketAddress (m_localAddress, 0));
m_socket->Connect (Inet6SocketAddress (m_peerAddress, 0));
m_socket->SetAttribute ("Protocol", UintegerValue (Ipv6Header::IPV6_ICMPV6));
m_socket->SetRecvCallback (MakeCallback (&Ping6::HandleRead, this));
}
ScheduleTransmit (Seconds (0.));
}
void
VoIP::Send (void)
{
if (!m_stateON)
{
m_stateON = true;
//start state ON
double random = rand() %10000;
m_stateDuration = -3*log(1-((double)random/10000));
m_endState = Simulator::Init()->Now () + m_stateDuration;
#ifdef APPLICATION_DEBUG
std::cout << " VoIP_DEBUG - Start ON Period, "
"\n\t Time = " << Simulator::Init()->Now ()
<< "\n\t state ON Duration = " << m_stateDuration
<< "\n\t end ON state = " << m_endState << std::endl;
#endif
}
//CREATE A NEW PACKET (ADDING UDP, IP and PDCP HEADERS)
Packet *packet = new Packet ();
int uid = Simulator::Init()->GetUID ();
packet->SetID(uid);
packet->SetTimeStamp (Simulator::Init()->Now ());
packet->SetSize (GetSize ());
Trace (packet);
PacketTAGs *tags = new PacketTAGs ();
tags->SetApplicationType(PacketTAGs::APPLICATION_TYPE_VOIP);
tags->SetApplicationSize (packet->GetSize ());
packet->SetPacketTags(tags);
UDPHeader *udp = new UDPHeader (GetClassifierParameters ()->GetSourcePort (),
GetClassifierParameters ()->GetDestinationPort ());
packet->AddUDPHeader (udp);
IPHeader *ip = new IPHeader (GetClassifierParameters ()->GetSourceID (),
GetClassifierParameters ()->GetDestinationID ());
packet->AddIPHeader (ip);
PDCPHeader *pdcp = new PDCPHeader ();
packet->AddPDCPHeader (pdcp);
GetRadioBearer()->Enqueue (packet);
if (Simulator::Init()->Now () <= m_endState)
{
ScheduleTransmit (0.02);
}
else
{
//schedule OFF Period
m_stateON = false;
double random = rand() %10000;
m_stateDuration = -2.23*log(1-((double)random/10000));
if (m_stateDuration > 6.9)
{
m_stateDuration = 6.9;
}
#ifdef APPLICATION_DEBUG
std::cout << " VoIP_DEBUG - Start OFF Period, "
"\n\t Time = " << Simulator::Init()->Now ()
<< "\n\t state OFF Duration = " << m_stateDuration << std::endl;
#endif
ScheduleTransmit (m_stateDuration);
}
}
void Ping6::Send ()
{
NS_LOG_FUNCTION_NOARGS ();
NS_ASSERT (m_sendEvent.IsExpired ());
Ptr<Packet> p = 0;
uint8_t* data = new uint8_t[m_size];
Ipv6Address src;
Ptr<Ipv6> ipv6 = GetNode ()->GetObject<Ipv6> ();
if (m_ifIndex > 0)
{
/* hack to have ifIndex in Ipv6RawSocketImpl
* maybe add a SetIfIndex in Ipv6RawSocketImpl directly
*/
Ipv6InterfaceAddress dstIa (m_peerAddress);
for (uint32_t i = 0; i < GetNode ()->GetObject<Ipv6> ()->GetNAddresses (m_ifIndex); i++)
{
src = GetNode ()->GetObject<Ipv6> ()->GetAddress (m_ifIndex, i).GetAddress ();
Ipv6InterfaceAddress srcIa (src);
if ( srcIa.GetScope() == dstIa.GetScope() )
{
break;
}
}
}
else
{
src = m_localAddress;
}
NS_ASSERT_MSG (m_size >= 4, "ICMPv6 echo request payload size must be >= 4");
data[0] = 0xDE;
data[1] = 0xAD;
data[2] = 0xBE;
data[3] = 0xEF;
p = Create<Packet> (data, 4);
p->AddAtEnd (Create<Packet> (m_size - 4));
Icmpv6Echo req (1);
req.SetId (0xBEEF);
req.SetSeq (m_seq);
m_seq++;
/* we do not calculate pseudo header checksum here, because we are not sure about
* source IPv6 address. Checksum is calculated in Ipv6RawSocketImpl.
*/
p->AddHeader (req);
m_socket->Bind (Inet6SocketAddress (src, 0));
/* use Loose Routing (routing type 0) */
if (m_routers.size ())
{
Ipv6ExtensionLooseRoutingHeader routingHeader;
routingHeader.SetNextHeader (Ipv6Header::IPV6_ICMPV6);
routingHeader.SetLength (m_routers.size () * 16 + 8);
routingHeader.SetTypeRouting (0);
routingHeader.SetSegmentsLeft (m_routers.size ());
routingHeader.SetRoutersAddress (m_routers);
p->AddHeader (routingHeader);
m_socket->SetAttribute ("Protocol", UintegerValue (Ipv6Header::IPV6_EXT_ROUTING));
}
m_socket->Send (p, 0);
++m_sent;
NS_LOG_INFO ("Sent " << p->GetSize () << " bytes to " << m_peerAddress);
if (m_sent < m_count)
{
ScheduleTransmit (m_interval);
}
delete[] data;
}
