Extending PlainSocketImpl's functionality

Hi,
I'm trying to achieve the following. Make JDBC drivers use a "somewhat" customized socket implementation. In particular, I want them to use sockets where I can control the SO_TIMEOUT.
This kinda rules out extending the Socket class because I don't want to have to modify the JDBC driver code to now instantiate the extended Socket.
My other option is to then extend SocketImpl and implement a SocketImplFactory to return the extended SocketImpl with the SO_TIMEOUT set. Well this is undesirable either because then I have to re-implement all the functionality from scratch.
I can try extending PlainSocketImpl and return the extended PlainSocketImpl from the factory but PlainSocketImpl is in java.net and has default package access. In order to extend it I have to be in java.net. Which means I have to run my app with -Xbootclasspath. From what I've read this has some licensing implications. Now I can also copy the code from PlainSocketImpl into my own class which is outside of java.net. I assume that has the same licensing implication as using -Xbootclasspath.
Is there a reasonably easy way to do this without getting into the licensing issue?
Thanks
Budyanto

You don't have to do this. Any JDBC driver that doesn't already use a socket timeout, or provide a way for you to set it, should be returned to the vendor with a loud complaint.

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