> On Monday, 3 March 2003, brian@worldcontrol.com wrote:
> > I give the 2.5 series a try every once in a while and found the 2.5.63
> > booted and ran reasonably well.
> >
> > I happen to working on some multicast stuff and found that I can't
> > read multicast data when running 2.5.63.
On Tue, Mar 04, 2003 at 11:39:53PM +0100, Niels den Otter wrote:
> You appear to be strugling with the same problem I have. What I find is
> that the multicast application binds to the loopback instead of ethernet
> interface (also no IGMP joins are send out on the ethernet interface).
> Can you please check the output of 'netstat -n -g' and see if the
> multicast address shows up at the correct interface?
The apps I have vlc, and mpeg2dec (with mods) cannot read
multicast data under 2.5.63, but both work under 2.4.20.
I also have some PERL tools which do multicasting stuff and
they don't work any longer either.
However, I added 'eth0' to the IO::Socket::Multicast::mcast_add()
call and now the data is showing up.
I believe this means back in the C/C++ paradigm you can't rely on
INADDR_ANY to do the right thing. So you may have to set the
specific IP of the interface you want your multicast data to
come from in imr_interface.s_addr of the struct ip_mreq you pass
in via setsockopt( sock, IPPROTO_IP, IP_ADD_MEMBERSHIP, ...
I'll give this a try and let you know what I find.
-- Brian Litzinger - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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