-import java.io.BufferedOutputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.net.Socket;
-import javax.annotation.concurrent.NotThreadSafe;
-import javax.annotation.concurrent.ThreadSafe;
-import org.opendaylight.controller.netconf.ssh.authentication.AuthProvider;
-import org.opendaylight.controller.netconf.util.messages.NetconfHelloMessageAdditionalHeader;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;