[Live-devel] Re : TestRelay problem
finlayson at live.com
Fri Mar 11 08:05:29 PST 2005
>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);
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.
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