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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * 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.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.channel.ChannelPromise;
import io.netty.handler.codec.http.FullHttpResponse;
import io.netty.handler.codec.http.websocketx.WebSocketClientProtocolHandler.ClientHandshakeStateEvent;
import io.netty.util.concurrent.Future;
import io.netty.util.concurrent.FutureListener;

import java.util.concurrent.TimeUnit;

import static io.netty.util.internal.ObjectUtil.*;

class WebSocketClientProtocolHandshakeHandler extends ChannelInboundHandlerAdapter {
    private static final long DEFAULT_HANDSHAKE_TIMEOUT_MS = 10000L;

    private final WebSocketClientHandshaker handshaker;
    private final long handshakeTimeoutMillis;
    private ChannelHandlerContext ctx;
    private ChannelPromise handshakePromise;

    WebSocketClientProtocolHandshakeHandler(WebSocketClientHandshaker handshaker) {
        this(handshaker, DEFAULT_HANDSHAKE_TIMEOUT_MS);
    }

    WebSocketClientProtocolHandshakeHandler(WebSocketClientHandshaker handshaker, long handshakeTimeoutMillis) {
        this.handshaker = handshaker;
        this.handshakeTimeoutMillis = checkPositive(handshakeTimeoutMillis, "handshakeTimeoutMillis");
    }

    @Override
    public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
        this.ctx = ctx;
        handshakePromise = ctx.newPromise();
    }

    @Override
    public void channelActive(final ChannelHandlerContext ctx) throws Exception {
        super.channelActive(ctx);
        handshaker.handshake(ctx.channel()).addListener(new ChannelFutureListener() {
            @Override
            public void operationComplete(ChannelFuture future) throws Exception {
                if (!future.isSuccess()) {
                    handshakePromise.tryFailure(future.cause());
                    ctx.fireExceptionCaught(future.cause());
                } else {
                    ctx.fireUserEventTriggered(
                            WebSocketClientProtocolHandler.ClientHandshakeStateEvent.HANDSHAKE_ISSUED);
                }
            }
        });
        applyHandshakeTimeout();
    }

    @Override
    public void channelInactive(ChannelHandlerContext ctx) throws Exception {
        if (!handshakePromise.isDone()) {
            handshakePromise.tryFailure(new WebSocketClientHandshakeException("channel closed with handshake " +
                                                                              "in progress"));
        }

        super.channelInactive(ctx);
    }

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        if (!(msg instanceof FullHttpResponse)) {
            ctx.fireChannelRead(msg);
            return;
        }

        FullHttpResponse response = (FullHttpResponse) msg;
        try {
            if (!handshaker.isHandshakeComplete()) {
                handshaker.finishHandshake(ctx.channel(), response);
                handshakePromise.trySuccess();
                ctx.fireUserEventTriggered(
                        WebSocketClientProtocolHandler.ClientHandshakeStateEvent.HANDSHAKE_COMPLETE);
                ctx.pipeline().remove(this);
                return;
            }
            throw new IllegalStateException("WebSocketClientHandshaker should have been non finished yet");
        } finally {
            response.release();
        }
    }

    private void applyHandshakeTimeout() {
        final ChannelPromise localHandshakePromise = handshakePromise;
        if (handshakeTimeoutMillis <= 0 || localHandshakePromise.isDone()) {
            return;
        }

        final Future timeoutFuture = ctx.executor().schedule(new Runnable() {
            @Override
            public void run() {
                if (localHandshakePromise.isDone()) {
                    return;
                }

                if (localHandshakePromise.tryFailure(new WebSocketClientHandshakeException("handshake timed out"))) {
                    ctx.flush()
                       .fireUserEventTriggered(ClientHandshakeStateEvent.HANDSHAKE_TIMEOUT)
                       .close();
                }
            }
        }, handshakeTimeoutMillis, TimeUnit.MILLISECONDS);

        // Cancel the handshake timeout when handshake is finished.
        localHandshakePromise.addListener(new FutureListener() {
            @Override
            public void operationComplete(Future f) throws Exception {
                timeoutFuture.cancel(false);
            }
        });
    }

    /**
     * This method is visible for testing.
     *
     * @return current handshake future
     */
    ChannelFuture getHandshakeFuture() {
        return handshakePromise;
    }
}