如何在java中将Elastic search 5.4连接到tcp？

<dependency>
    <groupId>org.elasticsearch.client</groupId>
    <artifactId>elasticsearch-rest-high-level-client</artifactId>
    <version>5.4.0</version>
</dependency>

import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestHighLevelClient;

public class ElasticsearchConnection {
    private static final String HOST = "localhost";
    private static final int PORT = 9300;

    public static RestHighLevelClient createClient() {
        return new RestHighLevelClient(
                RestClient.builder(new HttpHost(HOST, PORT, "http")));
    }
}

RestHighLevelClient client = ElasticsearchConnection.createClient();