WebSocketServerHandshakerFactory.java — netty Source File

Source Code

/*
 * Copyright 2019 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;

import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelPromise;
import io.netty.handler.codec.http.DefaultFullHttpResponse;
import io.netty.handler.codec.http.HttpHeaderNames;
import io.netty.handler.codec.http.HttpUtil;
import io.netty.handler.codec.http.HttpRequest;
import io.netty.handler.codec.http.HttpResponse;
import io.netty.handler.codec.http.HttpResponseStatus;
import io.netty.handler.codec.http.HttpVersion;
import io.netty.util.internal.ObjectUtil;

/**
 * Auto-detects the version of the Web Socket protocol in use and creates a new proper
 * {@link WebSocketServerHandshaker}.
 */
public class WebSocketServerHandshakerFactory {

    private final String webSocketURL;

    private final String subprotocols;

    private final WebSocketDecoderConfig decoderConfig;

    /**
     * Constructor specifying the destination web socket location
     *
     * @param webSocketURL
     *            URL for web socket communications. e.g "ws://myhost.com/mypath".
     *            Subsequent web socket frames will be sent to this URL.
     * @param subprotocols
     *            CSV of supported protocols. Null if sub protocols not supported.
     * @param allowExtensions
     *            Allow extensions to be used in the reserved bits of the web socket frame
     */
    public WebSocketServerHandshakerFactory(
            String webSocketURL, String subprotocols, boolean allowExtensions) {
        this(webSocketURL, subprotocols, allowExtensions, 65536);
    }

    /**
     * Constructor specifying the destination web socket location
     *
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