-import java.io.BufferedReader;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.InputStreamReader;
-import java.net.InetSocketAddress;
-import java.net.Socket;
-import java.util.Collection;
-import java.util.List;
-import java.util.Set;
-
-import static org.mockito.Matchers.anyString;
-import static org.mockito.Mockito.doNothing;
-import static org.mockito.Mockito.doReturn;
-import static org.mockito.Mockito.mock;
+import com.google.common.base.Charsets;
+import com.google.common.base.Optional;
+import com.google.common.collect.Sets;
+import io.netty.channel.ChannelFuture;