Sending Custom Packets using sockets

[srinivas poram]

Hi,
I want to send my custom packet like hello among the simulated nodes. for this i have created a packet like below

Ptr<Packet>pkt=Create<Packet>(reinterpret_cast<uint8_t *>("hello"),5);
 i can able to check the payload by
cout<<*pkt<<endl; and contents of the packet by
cout<<pkt->PeekData()<<endl;
I came to know that i can able to send these packets among simulated nodes by using sockets.So i created socket by
Ptr<Socket>socket;
why is it giving error when i use
socket->Bind(InetSocketAddress(80));

and error is being displayed when i'm using udpFactory if i want to create a socket as below

Ptr<Socket>socket=udpFactory->CreateSocket();

any help ..please

[srinivas poram]

Hi,

 I could able tomake a packet and socket also. And i couldable to send the packet the packet particular destination node by using socket->SendTo(pkt,0,InetSocketAddress("Destination Address",destination port). But when i'm reading the pcap file generated by simulator it is showing that packet is sent only once. How can i make my simulator to take my packet(created by me) and send it regularly with some interval. also how can i send it in multicast and broadcast mode.

[William Bellia]

Hey,

In order to schedule re transmission of packets, you can use the following code:
  if (m_running)
    {
      Time tNext (Seconds (m_packetSize * 8 / static_cast<double> (m_dataRate.GetBitRate ())));
      m_sendEvent = Simulator::Schedule (tNext, &MyApp::SendPacket, this);
    }

where the variant on how fast the transmission takes place is the bit rate.

This code was taken from the example section in ns3 source.

Will

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[srinivas poram]

How can i make simulator to consider my packet/custom packet instead of generalized packets created by:

 

OnOffHelper onoff("ns3::UdpSocketFactory",Address(InetSocketAddress(Ipv4Address("10. . ."),port)));

 

 

Thanks

On Tuesday, 30 October 2012 15:59:37 UTC+5:30, srinivas poram wrote:

[Munde Pravin]

Greetings Sir,
I tried :

Ptr<Packet>pkt=Create<Packet>(reinterpret_cast<uint8_t *>("hello"),5);

socket->SendTo(pkt,0,InetSocketAddress(Ipv4Address ("10.1.1.1"), 80));

and ended up with following error :

error: reinterpret_cast from type ‘const char*’ to type ‘uint8_t* {aka unsigned char*}’ casts away qualifiers

for the first line.
How to resolve this ?
HOW to send any kind of data such as int ,char,string,variable value,array,list etc. ?
please help.Thank you

[Tommaso Pecorella]

Hi,

please read the posting guidelines.

T