WebSocketClientProtocolHandler.java — netty Source File

Source Code

/*
 * Copyright 2013 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.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandler;
import io.netty.channel.ChannelPipeline;
import io.netty.handler.codec.http.HttpHeaders;

import java.net.URI;
import java.util.List;

import static io.netty.handler.codec.http.websocketx.WebSocketClientProtocolConfig.DEFAULT_ALLOW_MASK_MISMATCH;
import static io.netty.handler.codec.http.websocketx.WebSocketClientProtocolConfig.DEFAULT_DROP_PONG_FRAMES;
import static io.netty.handler.codec.http.websocketx.WebSocketClientProtocolConfig.DEFAULT_HANDLE_CLOSE_FRAMES;
import static io.netty.handler.codec.http.websocketx.WebSocketClientProtocolConfig.DEFAULT_PERFORM_MASKING;
import static io.netty.handler.codec.http.websocketx.WebSocketClientProtocolConfig.DEFAULT_WITH_UTF8_VALIDATOR;
import static io.netty.handler.codec.http.websocketx.WebSocketServerProtocolConfig.DEFAULT_HANDSHAKE_TIMEOUT_MILLIS;
import static io.netty.util.internal.ObjectUtil.*;

/**
 * This handler does all the heavy lifting for you to run a websocket client.
 *
 * It takes care of websocket handshaking as well as processing of Ping, Pong frames. Text and Binary
 * data frames are passed to the next handler in the pipeline (implemented by you) for processing.
 * Also the close frame is passed to the next handler as you may want inspect it before close the connection if
 * the {@code handleCloseFrames} is {@code false}, default is {@code true}.
 *
 * This implementation will establish the websocket connection once the connection to the remote server was complete.
 *
 * To know once a handshake was done you can intercept the
 * {@link ChannelInboundHandler#userEventTriggered(ChannelHandlerContext, Object)} and check if the event was of type
 * {@link ClientHandshakeStateEvent#HANDSHAKE_ISSUED} or {@link ClientHandshakeStateEvent#HANDSHAKE_COMPLETE}.
 */
public class WebSocketClientProtocolHandler extends WebSocketProtocolHandler {
    private final WebSocketClientHandshaker handshaker;
    private final WebSocketClientProtocolConfig clientConfig;

    /**
     * Returns the used handshaker
     */
    public WebSocketClientHandshaker handshaker() {
        return handshaker;
    }

    /**
     * Events that are fired to notify about handshake status
// ... (375 more lines)