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 java.nio.ByteBuffer;
  
  /**
   * The interface for the frame
   */
  public interface Framedata {
  
      /**
       * Indicates that this is the final fragment in a message.  The first fragment MAY also be the final fragment.
       *
       * @return true, if this frame is the final fragment
       */
      boolean isFin();
  
      /**
       * Indicates that this frame has the rsv1 bit set.
       *
       * @return true, if this frame has the rsv1 bit set
       */
      boolean isRSV1();
  
      /**
       * Indicates that this frame has the rsv2 bit set.
       *
       * @return true, if this frame has the rsv2 bit set
       */
      boolean isRSV2();
  
      /**
       * Indicates that this frame has the rsv3 bit set.
       *
       * @return true, if this frame has the rsv3 bit set
       */
      boolean isRSV3();
  
      /**
       * Defines whether the "Payload data" is masked.
       *
       * @return true, "Payload data" is masked
       */
      boolean getTransfereMasked();
  
      /**
       * Defines the interpretation of the "Payload data".
       *
       * @return the interpretation as a Opcode
       */
      Opcode getOpcode();
  
      /**
       * The "Payload data" which was sent in this frame
       *
       * @return the "Payload data" as ByteBuffer
       */
      ByteBuffer getPayloadData();// TODO the separation of the application data and the extension data is yet to be done
  
      /**
       * Appends an additional frame to the current frame
       * <p>
       * This methods does not override the opcode, but does override the fin
       *
       * @param nextframe the additional frame
       */
      void append(Framedata nextframe);
  }
  