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;
  
  import java.io.IOException;
  import java.nio.ByteBuffer;
  import java.nio.channels.ByteChannel;
  
  public interface WrappedByteChannel extends ByteChannel {
  	/**
  	 * returns whether writeMore should be called write additional data.
  
  	 * @return is a additional write needed
  	 */
  	boolean isNeedWrite();
  
  	/**
  	 * Gets called when {@link #isNeedWrite()} ()} requires a additional rite
  	 * @throws IOException may be thrown due to an error while writing
  	 */
  	void writeMore() throws IOException;
  
  	/**
  	 * returns whether readMore should be called to fetch data which has been decoded but not yet been returned.
  	 * 
  	 * @see #read(ByteBuffer)
  	 * @see #readMore(ByteBuffer)
  	 * @return is a additional read needed
  	 **/
  	boolean isNeedRead();
  	/**
  	 * This function does not read data from the underlying channel at all. It is just a way to fetch data which has already be received or decoded but was but was not yet returned to the user.
  	 * This could be the case when the decoded data did not fit into the buffer the user passed to {@link #read(ByteBuffer)}.
  	 * @param dst the destiny of the read
  	 * @return the amount of remaining data
  	 * @throws IOException when a error occurred during unwrapping
  	 **/
  	int readMore(ByteBuffer dst) throws IOException;
  
  	/**
  	 * This function returns the blocking state of the channel
  	 * @return is the channel blocking
  	 */
  	boolean isBlocking();
  }
  