content: /*
   * Copyright (c) 2010-2019 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.youku.ribut.core.socket.java_websocket.framing;
  
  import com.youku.ribut.core.socket.java_websocket.enums.Opcode;
  import com.youku.ribut.core.socket.java_websocket.exceptions.InvalidDataException;
  import com.youku.ribut.core.socket.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 );
  	}
  
  	@Override
  	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" );
  		}
  	}
  }
  