Hello!
Here is a proposal for the first step in cleaning up the TwoStacks
socket implementation.
It is proposed to drom IPv6 support in the implementation of
TwoStacksPlainSocketImpl class (so formally, it's no more Two Stacks).
Therefore, this class will only be used when the user explicitly
requests IPv4 only configuration through setting
java.net.preferIPv4Stack option.
The fix mostly consists of removal, so it should be relatively easy to
review.
All the jdk_net tests pass.
BUGURL: https://bugs.openjdk.java.net/browse/JDK-8058824
WEBREV: http://cr.openjdk.java.net/~igerasim/8058824/0/webrev/
Sincerely yours,
Ivan
