content: /*
   * Copyright (c) 2010-2018 Nathan Rajlich
   *
   *  Permission is hereby granted, free of charge, to any person
   *  obtaining a copy of this software and associated documentation
   *  files (the "Software"), to deal in the Software without
   *  restriction, including without limitation the rights to use,
   *  copy, modify, merge, publish, distribute, sublicense, and/or sell
   *  copies of the Software, and to permit persons to whom the
   *  Software is furnished to do so, subject to the following
   *  conditions:
   *
   *  The above copyright notice and this permission notice shall be
   *  included in all copies or substantial portions of the Software.
   *
   *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
   *  OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
   *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
   *  HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
   *  WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   *  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
   *  OTHER DEALINGS IN THE SOFTWARE.
   */
  
  package com.alipay.api.java_websocket.framing;
  
  import com.alipay.api.java_websocket.enums.Opcode;
  import com.alipay.api.java_websocket.exceptions.InvalidDataException;
  import com.alipay.api.java_websocket.exceptions.InvalidFrameException;
  
  /**
   * Abstract class to represent control frames
   */
  public abstract class ControlFrame extends FramedataImpl1 {
  
      /**
       * Class to represent a control frame
       *
       * @param opcode the opcode to use
       */
      public ControlFrame(Opcode opcode) {
          super(opcode);
      }
  
      public void isValid() throws InvalidDataException {
          if (!isFin()) {
              throw new InvalidFrameException("Control frame cant have fin==false set");
          }
          if (isRSV1()) {
              throw new InvalidFrameException("Control frame cant have rsv1==true set");
          }
          if (isRSV2()) {
              throw new InvalidFrameException("Control frame cant have rsv2==true set");
          }
          if (isRSV3()) {
              throw new InvalidFrameException("Control frame cant have rsv3==true set");
          }
      }
  }
  