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

bugzilla-daemon@nsnam-www.ece.gatech.edu bugzilla-daemon at nsnam-www.ece.gatech.edu
Sun Jul 15 16:05:53 PDT 2007


           Summary: Allow UDP sockets to receive broadcast
           Product: ns-3
           Version: pre-release
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: node module
        AssignedTo: ns-bugs at isi.edu
        ReportedBy: gjcarneiro at gmail.com

Some context:

For my OLSR code, I need to use two UDP sockets, bound to the same OLSR port. 
One is bound to address in order to receive OLSR packets on all
interfaces.  Another one is bound the "main address", which is the address of
one of the node netdevices.  This second socket is used for sending OLSR
packets, and binding it to the main address is needed to ensure that OLSR
packets are always sent with that address as source, regardless of the
interface that actually transmits it.  This is required by the OLSR protocol.

Now the problem; it is two fold:

1. Currently, UDP sockets are not receiving broadcast packets;
2. NS-3 is allowing multiple sockets bound to the same port, but only allows
one of them to actually receive the packets, which is clearly wrong.

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