/*
* Copyright 2014 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.handler.codec.http.websocketx.extensions.compression;
import io.netty.handler.codec.http.websocketx.
BinaryWebSocketFrame;
import io.netty.handler.codec.http.websocketx.
ContinuationWebSocketFrame;
import io.netty.handler.codec.http.websocketx.
TextWebSocketFrame;
import io.netty.handler.codec.http.websocketx.
WebSocketFrame;
import io.netty.handler.codec.http.websocketx.extensions.
WebSocketExtension;
/**
* Per-frame implementation of deflate decompressor.
*/
class
PerFrameDeflateDecoder extends
DeflateDecoder {
/**
* Constructor
* @param noContext true to disable context takeover.
*/
public
PerFrameDeflateDecoder(boolean
noContext) {
super(
noContext);
}
@
Override
public boolean
acceptInboundMessage(
Object msg) throws
Exception {
return (
msg instanceof
TextWebSocketFrame ||
msg instanceof
BinaryWebSocketFrame ||
msg instanceof
ContinuationWebSocketFrame) &&
(((
WebSocketFrame)
msg).
rsv() &
WebSocketExtension.
RSV1) > 0;
}
@
Override
protected int
newRsv(
WebSocketFrame msg) {
return
msg.
rsv() ^
WebSocketExtension.
RSV1;
}
@
Override
protected boolean
appendFrameTail(
WebSocketFrame msg) {
return true;
}
}