[Ns-bugs] [Bug 51] Allow UDP sockets to receive broadcast

[bugzilla-daemon@nsnam-www.ece.gatech.edu]

http://www.nsnam.org/bugzilla/show_bug.cgi?id=51





------- Comment #8 from gjcarneiro at gmail.com  2007-09-21 12:42 -------
The source of the problem is udp-socket.cc, UdpSocket::DoSendTo:

  if (dest.IsBroadcast ())
    {
      NS_LOG_LOGIC ("Limited broadcast");
      for (uint32_t i = 0; i < ipv4->GetNInterfaces (); i++ )
        {
          Ipv4Address addri = ipv4->GetAddress (i);
          Ipv4Mask maski = ipv4->GetNetworkMask (i);
          m_udp->Send (p, addri, addri.GetSubnetDirectedBroadcast (maski),
                       m_endPoint->GetLocalPort (), port);
          NotifyDataSent (p.GetSize ());
        }
    }

This "addri.GetSubnetDirectedBroadcast (maski)" is changing the 255.255.255.255
address to 10.0.255.255.  This behavior does not match my real world
experience.  Replacing "addri.GetSubnetDirectedBroadcast (maski)" with "dest"
fixes the problem.  Any comments?


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