me.netty.http.HttpServer.java Source code

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Here is the source code for me.netty.http.HttpServer.java

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/*
 * Copyright 2016 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 me.netty.http;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.http2.Http2SecurityUtil;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;
import io.netty.handler.ssl.*;
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.util.SelfSignedCertificate;
import io.netty.util.concurrent.Future;
import io.netty.util.concurrent.GenericFutureListener;
import me.netty.http.core.ServerContext;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 *http?
 */
public final class HttpServer {

    private static Log logger = LogFactory.getLog(HttpServer.class);

    private boolean SSL;
    private int PORT;
    private ServerContext serverContext;

    public HttpServer(int port, boolean ssl) {
        this.PORT = port;
        this.SSL = ssl;

        serverContext = ServerContext.getServerContext(port);
    }

    public void start() throws Exception {
        //?
        serverContext.initContext();

        // 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 http2Orhttp.

        //CPU??workwork?
        // ?????
        int threads = Runtime.getRuntime().availableProcessors() * 2;

        EventLoopGroup bossGroup = new NioEventLoopGroup(threads);
        EventLoopGroup workerGroup = new NioEventLoopGroup(threads);
        try {
            ServerBootstrap b = new ServerBootstrap();
            b.option(ChannelOption.SO_BACKLOG, 1024);
            b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                    .handler(new LoggingHandler(LogLevel.DEBUG)).childHandler(new Http2ServerInitializer(sslCtx));

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

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

            ch.closeFuture().sync().addListener(new GenericFutureListener<Future<? super Void>>() {
                public void operationComplete(Future<? super Void> future) throws Exception {
                    logger.info("service has shutdown");
                }
            });
        } finally {
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
        }

    }

    public ServerContext getServerContext() {
        return this.serverContext;
    }

}