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I've been unable to find any reference to Netty 4 supporting UDP multicast with IGMPv3 in the documentation.

Can anyone clarify if this is supported or not?

Mark
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  • Is it ever supported by JDK? – trustin May 28 '14 at 08:28
  • The javadoc for MulticastChannel states "It may optionally support source filtering as specified by RFC 3376: Internet Group Management Protocol, Version 3 (IGMPv3)". What isn't clear is if optionally refers to the implementation or an option you need to specify. – Mark Jun 01 '14 at 20:08

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Everything that is possible with plain jdk7 should also be possible with Netty in terms of multicast.

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Mark
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