httpservices/src/main/java/ucar/httpservices/HTTPSession.java
static protected synchronized void track(HTTPSession session)
    {
        if(!TESTING) throw new UnsupportedOperationException();
        if(sessionList == null)
            sessionList = new ConcurrentSkipListSet<HTTPSession>();
        sessionList.add(session);
    }
static protected synchronized void track(HTTPSession session)
    {
        if(!TESTING) throw new UnsupportedOperationException();
        if(sessionList == null)
            sessionList = new ConcurrentSkipListSet<HTTPSession>();
        sessionList.add(session);
    }
If we are testing, then track the sessions for kill