...
For the connection factory, the plan right now is to make a real JMS connection pool. Most likely I'll borrow heavily from JDBC pool connection API and modify it to meet the needs of the JMS Sampler. This way, I can have it implement TestListener to setup and tear down the connection pool propertly. It would be bad to create a pool of connections to JMS at the start of a test, but not close those connections when the test ends.
Here are screen captures of the GUI so far.
...
http://www.apache.org/~woolfel/subscriber.png
http://www.apache.org/~woolfel/publisher.png