On 10:09 am, yperc...@gmail.com wrote: >On Thu, Dec 16, 2010 at 2:06 AM, Itamar Turner-Trauring ><ita...@itamarst.org >>wrote: > >>On Wed, 2010-12-15 at 18:07 +0200, Pandelis Theodosiou wrote: >> > I'm trying to make a Multicast client. >> > >> > I've tried the simple script found in: >> > http://twistedmatrix.com/documents/10.1.0/core/howto/udp.html#auto3 >> > >> > While it shows no errors, it doesn't receive any data. How can I >>check >> > what the problem is? >> >>You didn't do the necessary joinGroup() call, which is in the original >>example. >I made many trials, and one was like this: > >from twisted.internet.protocol import DatagramProtocol >from twisted.internet import reactor >from twisted.application.internet import MulticastServer > > >class MulticastClientUDP(DatagramProtocol): > > def startProtocol(self): > self.transport.joinGroup('233.75.215.44') > > def datagramReceived(self, datagram, address): > print "Received:" + repr(datagram) > ># Trying to receive from 233.75.215.44, on our dynamically allocated >port >reactor.listenUDP(60044, MulticastClientUDP()) >reactor.run() > >But datagramReceived is never called. Am I doing something wrong? >Is there any other method that should be called so I start listening on >that >group? > >I've also tried to use listenMulticast instead of listenUDP but then I >realized this is if I need more than one application to listen/write to >the >multicast port and I don't need that. >pandelis
Then it may indeed be an issue with a routing device somewhere near your tests. Dropping all multicast traffic is a common behavior to encounter in firewalls and home routers. Maybe if you play with iptables or the equivalent on your system you'll be able to fix this. Jean-Paul _______________________________________________ Twisted-Python mailing list Twisted-Python@twistedmatrix.com http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python
