how to convert ipv4 address from const char to integer

[azize tunc]

I have below code. I am trying to iterate through my hosts and create UDP client and server application. My topology has a csma bridge that has many hosts. I am adding udp client and server application ever 60 seconds.

I know what the ip addresses of each host in const char type. but when going through each hosts in a loop, the ip address will also change. i want to assign that number to integer and pass it to ipv4Address class.

Can somebody help me with how i can convert the string value of ipv4 address to integer?

// We've got the "hardware" in place.  Now we need to add IP addresses.

  //

  printf ("Assign IP Addresses.\n");

  Ipv4AddressHelper ipv4;

  ipv4.SetBase ("10.1.1.0", "255.255.255.0");

  ipv4.Assign (terminalDevices);

....

....

......

for(int i = 0; i < 3600; i += 60)

  {

      randomClientNode = getRandomNumber(0,49);

      printf("Random Client Node %d\n",randomClientNode);

      

      randomServerNode = getRandomNumber(0,49);

      printf("Random Server Node %d\n",randomServerNode);

      

     if(randomClientNode != randomServerNode)

     {

         if( previousClientNode != randomClientNode)

         {

             // Traffic Generater

             int trafficGenIpNumber = randomServerNode + 1;

             OnOffHelper onoff("ns3::UdpSocketFactory", Address (InetSocketAddress (Ipv4Address ("10.1.1.randomServerNode"), port)));

             onoff.SetAttribute("PacketSize", UintegerValue(1024));

             app.Add(onoff.Install (terminals.Get (randomClientNode)));

             // Start the application

             app.Start (Seconds (i));

             app.Stop (Seconds (3600 - i));

             //Traffic receiver

             // Create an optional packet sink to receive these packets

             PacketSinkHelper sink("ns3::UdpSocketFactory",Address (InetSocketAddress (Ipv4Address::GetAny (), port)));

             sinkApps.Add(sink.Install (terminals.Get (randomServerNode)));

             sinkApps.Start (Seconds (0.0));

         }

     }

     previousClientNode = randomClientNode;

  }   

[Nazmul Alam]

Hi,
Just a suggestion, how about directly using Ipv4Address::m_address?

[azize tunc]

thank you. 

I used GetAddress from Ipv4InterfaceContainer 

 Ipv4InterfaceContainer interfaceContainer = ipv4.Assign (terminalDevices);

OnOffHelper onoff("ns3::UdpSocketFactory", Address (InetSocketAddress (interfaceContainer.GetAddress(randomServerNode), port)));

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