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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging 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 2015 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.example.http2.tiles;

import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.HttpServerCodec;
import io.netty.handler.codec.http2.DefaultHttp2Connection;
import io.netty.handler.codec.http2.HttpToHttp2ConnectionHandlerBuilder;
import io.netty.handler.codec.http2.InboundHttp2ToHttpAdapter;
import io.netty.handler.codec.http2.InboundHttp2ToHttpAdapterBuilder;
import io.netty.handler.ssl.ApplicationProtocolNames;
import io.netty.handler.ssl.ApplicationProtocolNegotiationHandler;

/**
 * Used during protocol negotiation, the main function of this handler is to
 * return the HTTP/1.1 or HTTP/2 handler once the protocol has been negotiated.
 */
public class Http2OrHttpHandler extends ApplicationProtocolNegotiationHandler {

    private static final int MAX_CONTENT_LENGTH = 1024 * 100;

    protected Http2OrHttpHandler() {
        super(ApplicationProtocolNames.HTTP_1_1);
    }

    @Override
    protected void configurePipeline(ChannelHandlerContext ctx, String protocol) throws Exception {
        if (ApplicationProtocolNames.HTTP_2.equals(protocol)) {
            configureHttp2(ctx);
            return;
        }

        if (ApplicationProtocolNames.HTTP_1_1.equals(protocol)) {
            configureHttp1(ctx);
            return;
        }

        throw new IllegalStateException("unknown protocol: " + protocol);
    }

    private static void configureHttp2(ChannelHandlerContext ctx) {
        DefaultHttp2Connection connection = new DefaultHttp2Connection(true);
        InboundHttp2ToHttpAdapter listener = new InboundHttp2ToHttpAdapterBuilder(connection)
                .propagateSettings(true).validateHttpHeaders(false)
                .maxContentLength(MAX_CONTENT_LENGTH).build();

        ctx.pipeline().addLast(new HttpToHttp2ConnectionHandlerBuilder()
                .frameListener(listener)
                // .frameLogger(TilesHttp2ToHttpHandler.logger)
                .connection(connection).build());

        ctx.pipeline().addLast(new Http2RequestHandler());
    }

    private static void configureHttp1(ChannelHandlerContext ctx) throws Exception {
        ctx.pipeline().addLast(new HttpServerCodec(),
                               new HttpObjectAggregator(MAX_CONTENT_LENGTH),
                               new FallbackRequestHandler());
    }
}