RFR: 8308807: [AIX] MulticastSocket and jdp test fails due to joinGroup

[Deepa Kumari]

On Sun, 6 Aug 2023 13:47:41 GMT, Andrey Turbanov <aturbanov at openjdk.org> wrote:

>> DatagramSocket delegates to an inner DatagramSocket object. Irrespective of whether datagramSocket is IPv4 or IPv6, we create an IPv6 datagramChannel as its's delegate. So, This can cause problems with operations like joinGroup. 
>> 
>> On AIX, IPv6 datagramSocket can not join an IPv4 multicast group.
>> 
>> These failures can be fixed by making sure that the delegate created for a datagram socket has the same protocol family. 
>> 
>> 
>> 
>> 
>> Reported Issue : [JDK-8308807](https://bugs.openjdk.org/browse/JDK-8308807)
>
> src/java.base/share/classes/sun/nio/ch/SelectorProviderImpl.java line 58:
> 
>> 56: 
>> 57:     public DatagramChannel openUninterruptibleDatagramChannel(ProtocolFamily family) throws IOException {
>> 58:     if(family == null)
> 
> Suggestion:
> 
>     if (family == null)

Thank you @turbanoff for highlighting this.

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PR Review Comment: https://git.openjdk.org/jdk/pull/14142#discussion_r1315532078