import io.netty.util.Timeout;
import io.netty.util.Timer;
import io.netty.util.TimerTask;
+import io.netty.util.concurrent.Future;
import java.io.IOException;
import java.net.InetAddress;
import java.util.Date;
import java.util.LinkedList;
import java.util.Queue;
-import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import org.opendaylight.protocol.framework.AbstractProtocolSession;