com.vela.iot.active.netty.http2.server.Http2Server.java Source code

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Here is the source code for com.vela.iot.active.netty.http2.server.Http2Server.java

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/*
 * 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:
 *
 *   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 com.vela.iot.active.netty.http2.server;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelHandler.Sharable;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.http2.Http2Codec;
import io.netty.handler.codec.http2.Http2SecurityUtil;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;
import io.netty.handler.ssl.ApplicationProtocolConfig;
import io.netty.handler.ssl.ApplicationProtocolConfig.Protocol;
import io.netty.handler.ssl.ApplicationProtocolConfig.SelectedListenerFailureBehavior;
import io.netty.handler.ssl.ApplicationProtocolConfig.SelectorFailureBehavior;
import io.netty.handler.ssl.ApplicationProtocolNames;
import io.netty.handler.ssl.OpenSsl;
import io.netty.handler.ssl.SslContext;
import io.netty.handler.ssl.SslContextBuilder;
import io.netty.handler.ssl.SslProvider;
import io.netty.handler.ssl.SupportedCipherSuiteFilter;
import io.netty.handler.ssl.util.SelfSignedCertificate;

/**
 * A HTTP/2 Server that responds to requests with a Hello World. Once started,
 * you can test the server with the example client.
 */
public final class Http2Server {

    //static final boolean SSL = System.getProperty("ssl") != null;
    static final boolean SSL = false;

    static final int PORT = Integer.parseInt(System.getProperty("port", SSL ? "8443" : "8080"));
    static final String HOST = "0.0.0.0";

    public static void main(String[] args) throws Exception {
        // Configure SSL.
        final SslContext sslCtx;
        if (SSL) {
            SslProvider provider = OpenSsl.isAlpnSupported() ? SslProvider.OPENSSL : SslProvider.JDK;
            SelfSignedCertificate ssc = new SelfSignedCertificate();
            sslCtx = SslContextBuilder.forServer(ssc.certificate(), ssc.privateKey()).sslProvider(provider)
                    /*
                    * NOTE: the cipher filter may not include all ciphers
                    * required by the HTTP/2 specification. Please refer to the
                    * HTTP/2 specification for cipher requirements.
                    */
                    .ciphers(Http2SecurityUtil.CIPHERS, SupportedCipherSuiteFilter.INSTANCE)
                    .applicationProtocolConfig(new ApplicationProtocolConfig(Protocol.ALPN,
                            // NO_ADVERTISE is currently the only mode
                            // supported by both OpenSsl and JDK
                            // providers.
                            SelectorFailureBehavior.NO_ADVERTISE,
                            // ACCEPT is currently the only mode
                            // supported by both OpenSsl and JDK
                            // providers.
                            SelectedListenerFailureBehavior.ACCEPT, ApplicationProtocolNames.HTTP_2,
                            ApplicationProtocolNames.HTTP_1_1))
                    .build();
        } else {
            sslCtx = null;
        }
        // Configure the server.
        EventLoopGroup bossGroup = new NioEventLoopGroup(1);
        EventLoopGroup workerGroup = new NioEventLoopGroup(7);
        try {
            LastInboundHandler serverLastInboundHandler = new SharableLastInboundHandler();
            ServerBootstrap b = new ServerBootstrap();
            // BACKLOG?ServerSocket?????1Java50
            b.option(ChannelOption.SO_BACKLOG, 1024);
            b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                    .handler(new LoggingHandler(LogLevel.INFO))
                    .childHandler(new ChannelInitializer<SocketChannel>() {

                        @Override
                        protected void initChannel(SocketChannel ch) throws Exception {
                            ChannelPipeline p = ch.pipeline();
                            p.addLast(new Http2Codec(true, serverLastInboundHandler));
                            //p.addLast(new HttpContentCompressor(1));
                            p.addLast(new HelloWorldHttp2HandlerBuilder().build());
                        }
                    });

            Channel ch = b.bind(HOST, PORT).sync().channel();

            System.err.println("Open your HTTP/2-enabled web browser and navigate to " + (SSL ? "https" : "http")
                    + "://127.0.0.1:" + PORT + '/');

            ch.closeFuture().sync();
        } finally {
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
        }
    }

    @Sharable
    private static class SharableLastInboundHandler extends LastInboundHandler {
        @Override
        public void channelActive(ChannelHandlerContext ctx) throws Exception {
            ctx.fireChannelActive();
        }

        @Override
        public void channelInactive(ChannelHandlerContext ctx) throws Exception {
            ctx.fireChannelInactive();
        }
    }
}