Change the socket timeout of a live connection?

Hi everyone. Is there any way to change the socket timeout of an existing PostgreSQL JDBC connection? The reason I ask is that we would like to test various timeouts in a JBoss environment where we can't directly edit the JBoss data source XML file (and therefore the JDBC URL). So it would be great if we could somehow do this in Java code.

Based on a look at the source code, I'm pretty sure the answer is no -- we would have to have a way of getting to the PGStream.getSocket() method. And I'm not even sure what happens if you call setSoTimeout() more than once on an existing socket. But I thought I would ask anyway.

I'm using driver version 8.4-701 (JDBC 3), JRE 1.6.0_18 64-bit on Windows, connecting to a PostgreSQL 8.3 server on Linux.

-- Matt