PerMessageDeflateClientExtensionHandshaker.java — netty Source File

Source Code

/*
 * 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:
 *
 *   https://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.compression.ZlibCodecFactory;
import io.netty.handler.codec.http.websocketx.extensions.WebSocketClientExtension;
import io.netty.handler.codec.http.websocketx.extensions.WebSocketClientExtensionHandshaker;
import io.netty.handler.codec.http.websocketx.extensions.WebSocketExtensionData;
import io.netty.handler.codec.http.websocketx.extensions.WebSocketExtensionDecoder;
import io.netty.handler.codec.http.websocketx.extensions.WebSocketExtensionEncoder;
import io.netty.handler.codec.http.websocketx.extensions.WebSocketExtensionFilterProvider;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map.Entry;

import static io.netty.handler.codec.http.websocketx.extensions.compression.PerMessageDeflateServerExtensionHandshaker.*;
import static io.netty.util.internal.ObjectUtil.*;

/**
 * <a href="https://tools.ietf.org/html/draft-ietf-hybi-permessage-compression-18">permessage-deflate</a>
 * handshake implementation.
 */
public final class PerMessageDeflateClientExtensionHandshaker implements WebSocketClientExtensionHandshaker {

    private final int compressionLevel;
    private final boolean allowClientWindowSize;
    private final int requestedServerWindowSize;
    private final boolean allowClientNoContext;
    private final boolean requestedServerNoContext;
    private final WebSocketExtensionFilterProvider extensionFilterProvider;
    private final int maxAllocation;

    /**
     * Constructor with default configuration.
     * @deprecated
     *            Use {@link PerMessageDeflateClientExtensionHandshaker#
     *            PerMessageDeflateClientExtensionHandshaker(int)}.
     */
    @Deprecated
    public PerMessageDeflateClientExtensionHandshaker() {
        this(0);
    }

    /**
     * Constructor with default configuration.
     * @param maxAllocation
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