f45d75478f
Motivation: Adding an example that showcases Netty’s HTTP/2 codec and that is slightly more complex than the existing hello-world example. It is based on the Gopher tiles example available here: https://http2.golang.org/gophertiles?latency=0 Modifications: Moved current http2 example to http2/helloworld. Added http2 tiles example under http2/tiles. Result: A Netty tiles example is available.
88 lines
3.8 KiB
Java
88 lines
3.8 KiB
Java
/*
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* Copyright 2015 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.example.http2.tiles;
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import static io.netty.handler.codec.http2.Http2OrHttpChooser.SelectedProtocol.HTTP_1_1;
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import static io.netty.handler.codec.http2.Http2OrHttpChooser.SelectedProtocol.HTTP_2;
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import static io.netty.handler.codec.http2.Http2SecurityUtil.CIPHERS;
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import io.netty.bootstrap.ServerBootstrap;
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import io.netty.channel.Channel;
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import io.netty.channel.ChannelFuture;
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import io.netty.channel.ChannelInitializer;
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import io.netty.channel.ChannelOption;
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import io.netty.channel.EventLoopGroup;
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import io.netty.channel.socket.SocketChannel;
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import io.netty.channel.socket.nio.NioServerSocketChannel;
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import io.netty.handler.ssl.ApplicationProtocolConfig;
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import io.netty.handler.ssl.ApplicationProtocolConfig.Protocol;
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import io.netty.handler.ssl.ApplicationProtocolConfig.SelectedListenerFailureBehavior;
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import io.netty.handler.ssl.ApplicationProtocolConfig.SelectorFailureBehavior;
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import io.netty.handler.ssl.SslContext;
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import io.netty.handler.ssl.SslContextBuilder;
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import io.netty.handler.ssl.SupportedCipherSuiteFilter;
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import io.netty.handler.ssl.util.SelfSignedCertificate;
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import java.security.cert.CertificateException;
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import javax.net.ssl.SSLException;
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/**
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* Demonstrates a Http2 server using Netty to display a bunch of images and
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* simulate latency. It is a Netty version of the <a href="https://http2.golang.org/gophertiles?latency=0">
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* Go lang HTTP2 tiles demo</a>.
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*/
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public class Http2Server {
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public static final int PORT = Integer.parseInt(System.getProperty("http2-port", "8443"));
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static final int MAX_CONTENT_LENGTH = 1024 * 100;
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private final EventLoopGroup group;
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public Http2Server(EventLoopGroup eventLoopGroup) {
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group = eventLoopGroup;
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}
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public ChannelFuture start() throws Exception {
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final SslContext sslCtx = configureTLS();
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ServerBootstrap b = new ServerBootstrap();
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b.option(ChannelOption.SO_BACKLOG, 1024);
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b.group(group).channel(NioServerSocketChannel.class).childHandler(new ChannelInitializer<SocketChannel>() {
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@Override
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protected void initChannel(SocketChannel ch) throws Exception {
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ch.pipeline().addLast(sslCtx.newHandler(ch.alloc()), new Http2OrHttpHandler(MAX_CONTENT_LENGTH));
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}
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});
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Channel ch = b.bind(PORT).sync().channel();
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return ch.closeFuture();
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}
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private SslContext configureTLS() throws CertificateException, SSLException {
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SelfSignedCertificate ssc = new SelfSignedCertificate();
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ApplicationProtocolConfig apn = new ApplicationProtocolConfig(Protocol.ALPN,
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// NO_ADVERTISE is currently the only mode supported by both OpenSsl and JDK providers.
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SelectorFailureBehavior.NO_ADVERTISE,
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// ACCEPT is currently the only mode supported by both OpenSsl and JDK providers.
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SelectedListenerFailureBehavior.ACCEPT,
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HTTP_2.protocolName(), HTTP_1_1.protocolName());
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final SslContext sslCtx = SslContextBuilder.forServer(ssc.certificate(), ssc.privateKey(), null)
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.ciphers(CIPHERS, SupportedCipherSuiteFilter.INSTANCE)
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.applicationProtocolConfig(apn).build();
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return sslCtx;
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}
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}
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