pulsar-websocket/src/main/java/org/apache/pulsar/websocket/PingPongHandler.java

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.pulsar.websocket;

import java.io.IOException;
import java.nio.ByteBuffer;
import org.eclipse.jetty.util.BufferUtil;
import org.eclipse.jetty.websocket.api.WebSocketAdapter;
import org.eclipse.jetty.websocket.api.WebSocketPingPongListener;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class PingPongHandler extends WebSocketAdapter implements WebSocketPingPongListener {

    private static final Logger log = LoggerFactory.getLogger(PingPongHandler.class);

    @Override
    public void onWebSocketPing(ByteBuffer payload) {
        try {
            if (log.isDebugEnabled()) {
                log.debug("PING: {}", BufferUtil.toDetailString(payload));
            }
            getRemote().sendPong(payload);
        } catch (IOException e) {
            log.warn("Failed to send pong: {}", e.getMessage());
        }
    }

    @Override
    public void onWebSocketPong(ByteBuffer payload) {

    }

}