To all those whose email I have (and still am) filling: Yers - it was a network problem on my part. The two NIC's were causing the problems. The example code is now working fine. Thanks all:-) On Wed, Mar 10, 2010 at 2:43 PM, Ben Barker <ben@bbarker.co.uk> wrote:
Ah - I have now sorted the interface problem.
I run the code I listed earlier, but it sites at the command line saying "listening" without every dumping anything to screen.
/sbin/ip maddr now shows:
eth1 link 01:00:5e:00:00:04 link 33:33:ff:7a:7e:4e link 01:00:5e:00:00:fb link 01:00:5e:00:00:01 link 33:33:00:00:00:01 inet 224.0.0.4 inet 224.0.0.251 inet 224.0.0.1 inet6 ff02::1:ff7a:7e4e inet6 ff02::1
And this is the same intterface on which I would expect to see the multicast udp packets.
On Wed, Mar 10, 2010 at 1:28 PM, Itamar Turner-Trauring <itamar@itamarst.org> wrote:
On Wed, 2010-03-10 at 10:35 +0000, Ben Barker wrote:
I have been looking at the examples here:
http://code.activestate.com/recipes/425975-simple-udp-multicast-client-serve...
But I seem to have trouble getting them to receive anything at all.
Did you do the joinGroup()? One of the examples omits it, which means it won't receive multicast.
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