Hi,
the two fields in a struct ip_mreq are the ip address of the group you
want to join (i.e. multicast address) being imr_multiaddr and the
ip address of the interface upon which you want to listen being
imr_interface. I believe that it is possible to specify INADDR_ANY
for the interface which just listens on the local interface.
I hope this is of help,
Steve.
Siddharth Srivastava wrote:
>
>
> hi all,
> i have a question regarding the ip_mreq structure for multicast
> sockets.The structure has a field called :interface:.I am unable to male
> out the meaning of that field.How is it to be specified? does it refer to
> one of the interfaces like eth0,eth1 etc? Or is it that the ip addr like
> xxx.xxx.xxx.xxx has to specified.
> What is the action, once the field has been specified?
>
> waiting eagerly for any feedback.
> Thanx.
>
>
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