RFR 8241305: Add protocol specific factory creation methods to SocketChannel and ServerSocketChannel

[Michael McMahon]

Hi,

Could I get the following change reviewed please?

The change is to add new static factory creation methods
to java.nio.channels.SocketChannel and java.nio.channels.ServerSocketChannel
which take a java.net.ProtocolFamily. These are basically the same as
a similar method that was added to DatagramChannel back in 1.7
and which allow the creation of IPv4 only channels or IPv4/IPv6.

The change will also facilitate the 'Unix domain' protocol family work
in JEP-380 [4]

The webrev is at [1] The CSR for the spec change is at [2]
and the bugid is [3].

Thanks,

Michael.


[1] http://cr.openjdk.java.net/~michaelm/8241305/webrev.1/

[2] https://bugs.openjdk.java.net/browse/JDK-8242926

[3] https://bugs.openjdk.java.net/browse/JDK-8241305

[4] https://openjdk.java.net/jeps/380