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   /*
    * Copyright 2012 The Netty Project
    *
    * The Netty Project 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:
    *
    *   https://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 io.netty.handler.codec.http.websocketx;
  
  import io.netty.buffer.ByteBuf;
  import io.netty.buffer.Unpooled;
  
  /**
   * Web Socket frame containing binary data.
   */
  public class PingWebSocketFrame extends WebSocketFrame {
  
      /**
       * Creates a new empty ping frame.
       */
      public PingWebSocketFrame() {
          super(true, 0, Unpooled.buffer(0));
      }
  
      /**
       * Creates a new ping frame with the specified binary data.
       *
       * @param binaryData
       *            the content of the frame.
       */
      public PingWebSocketFrame(ByteBuf binaryData) {
          super(binaryData);
      }
  
      /**
       * Creates a new ping frame with the specified binary data.
       *
       * @param finalFragment
       *            flag indicating if this frame is the final fragment
       * @param rsv
       *            reserved bits used for protocol extensions
       * @param binaryData
       *            the content of the frame.
       */
      public PingWebSocketFrame(boolean finalFragment, int rsv, ByteBuf binaryData) {
          super(finalFragment, rsv, binaryData);
      }
  
      @Override
      public PingWebSocketFrame copy() {
          return (PingWebSocketFrame) super.copy();
      }
  
      @Override
      public PingWebSocketFrame duplicate() {
          return (PingWebSocketFrame) super.duplicate();
      }
  
      @Override
      public PingWebSocketFrame retainedDuplicate() {
          return (PingWebSocketFrame) super.retainedDuplicate();
      }
  
      @Override
      public PingWebSocketFrame replace(ByteBuf content) {
          return new PingWebSocketFrame(isFinalFragment(), rsv(), content);
      }
  
      @Override
      public PingWebSocketFrame retain() {
          super.retain();
          return this;
      }
  
      @Override
      public PingWebSocketFrame retain(int increment) {
          super.retain(increment);
          return this;
      }
  
      @Override
      public PingWebSocketFrame touch() {
          super.touch();
          return this;
      }
  
      @Override
      public PingWebSocketFrame touch(Object hint) {
          super.touch(hint);
          return this;
      }
 }