}
/**
 * It is not necessary to call this method directly. This is the
 * <tt>URLConnection</tt> implementation of <tt>connect()</tt>.
 */
    public void connect() throws IOException {
        if (isConnected() && tree.session.transport.tconHostName == null) {
            /* Tree thinks it is connected but transport disconnected
             * under it, reset tree to reflect the truth.
             */