[Live-devel] Re : TestRelay problem

[adrian hornsby]

Hi  Ross,
I have managed to make the testRelay to work fine if the input is a multicast 
address but the output stream is a unicast.
Multicast --> Unicast

Then I checked the UDP packet with ethereal and find out that the multicast 
packets for UDP dont use  IGMP protocol. 
Is this the problem ? because our network use IGMP protocol for multicast.
Anyway to enable IGMP with live.com ?? 

best regards,
adrian

On Friday 11 Mar 2005 18:05, Ross Finlayson wrote:
> >I have just check the testRelay with a multicast address input and this
> > time with a unicast address output, and miracle, it works great.
> >So, relay multicast --> multicast doesn't work for
> >  me but multicast --> unicast does work very well.
> >Any clew ?? problem with the network, the pc or the library ?
>
> I suspect that you have a problem with your OS's implementation of
> multicast.  (E.g., I have heard of some (especially older) versions of
> Linux having flaky multicast implementations.)
>
> Try adding the following statement to "testRelay.cpp", immediately after
> line Groupsock outputGroupsock(*env, outputAddress, outputPort, outputTTL);
>
> outputGroupsock.multicastSendOnly();
>
> This will tell your OS that you don't want to *receive* any packets
> (including looped-back packets) sent to "outputAddress".  (This shouldn't
> be necessary, because you never actually *read* from that socket, but
> perhaps your OS is buggy, and is looping back packets sent to
> "outputAddress" to the "inputGroupsock" socket??)
>
> Let me know if that makes a difference.
>
>
> 	Ross Finlayson
> 	LIVE.COM
> 	<http://www.live.com/>
>
> _______________________________________________
> live-devel mailing list
> live-devel at lists.live.com
> http://lists.live.com/mailman/listinfo/live-devel