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.extensions;
  
  import com.youku.ribut.core.socket.java_websocket.exceptions.InvalidDataException;
  import com.youku.ribut.core.socket.java_websocket.exceptions.InvalidFrameException;
  import com.youku.ribut.core.socket.java_websocket.framing.Framedata;
  
  /**
   * Class which represents the normal websocket implementation specified by rfc6455.
   *
   * This is a fallback and will always be available for a Draft_6455
   *
   * @since 1.3.5
   */
  public class DefaultExtension implements IExtension {
  
  	@Override
  	public void decodeFrame( Framedata inputFrame ) throws InvalidDataException {
  		//Nothing to do here
  	}
  
  	@Override
  	public void encodeFrame( Framedata inputFrame ) {
  		//Nothing to do here
  	}
  
  	@Override
  	public boolean acceptProvidedExtensionAsServer( String inputExtension ) {
  		return true;
  	}
  
  	@Override
  	public boolean acceptProvidedExtensionAsClient( String inputExtension ) {
  		return true;
  	}
  
  	@Override
  	public void isFrameValid( Framedata inputFrame ) throws InvalidDataException {
  		if( inputFrame.isRSV1() || inputFrame.isRSV2() || inputFrame.isRSV3() ) {
  			throw new InvalidFrameException( "bad rsv RSV1: " + inputFrame.isRSV1() + " RSV2: " + inputFrame.isRSV2() + " RSV3: " + inputFrame.isRSV3() );
  		}
  	}
  
  	@Override
  	public String getProvidedExtensionAsClient() {
  		return "";
  	}
  
  	@Override
  	public String getProvidedExtensionAsServer() {
  		return "";
  	}
  
  	@Override
  	public IExtension copyInstance() {
  		return new DefaultExtension();
  	}
  
  	public void reset() {
  		//Nothing to do here. No internal stats.
  	}
  
  	@Override
  	public String toString() {
  		return getClass().getSimpleName();
  	}
  
  	@Override
  	public int hashCode() {
  		return getClass().hashCode();
  	}
  
  	@Override
  	public boolean equals( Object o ) {
  		return this == o || o != null && getClass() == o.getClass();
  	}
  }
  