Socket Option Requiring Custom Implementation

[Simon James]

I apologise if this is not the appropriate list for this question and welcome advice where it would be better posted.

I need to exploit the transparent proxy support in Linux.
However, this requires the setting of a non-standard option (IP_TRANSPARENT) before a socket is bound.
To achieve this, it seems to me I have to implement a SocketImplFactory to instantiate a custom socket implementation.
And my custom socket implementation cannot extend PlainSocketImpl because it's not public.
So I'm faced with having to write a significant amount of code to set on a bit.

Before I go too far down the route, I want to check whether there are any openjdk initiatives that might simplify this sort  of activity at some time in the future.

Regards

Simon
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