1 /*
2 * Copyright 2014 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the License. You may obtain a copy of the License at:
7 *
8 * https://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16
17 package io.netty.example.http2.helloworld.server;
18
19 import io.netty.bootstrap.ServerBootstrap;
20 import io.netty.channel.Channel;
21 import io.netty.channel.ChannelOption;
22 import io.netty.channel.EventLoopGroup;
23 import io.netty.channel.nio.NioEventLoopGroup;
24 import io.netty.channel.socket.nio.NioServerSocketChannel;
25 import io.netty.handler.codec.http2.Http2SecurityUtil;
26 import io.netty.handler.logging.LogLevel;
27 import io.netty.handler.logging.LoggingHandler;
28 import io.netty.handler.ssl.ApplicationProtocolConfig;
29 import io.netty.handler.ssl.ApplicationProtocolConfig.Protocol;
30 import io.netty.handler.ssl.ApplicationProtocolConfig.SelectedListenerFailureBehavior;
31 import io.netty.handler.ssl.ApplicationProtocolConfig.SelectorFailureBehavior;
32 import io.netty.handler.ssl.ApplicationProtocolNames;
33 import io.netty.handler.ssl.OpenSsl;
34 import io.netty.handler.ssl.SslContext;
35 import io.netty.handler.ssl.SslContextBuilder;
36 import io.netty.handler.ssl.SslProvider;
37 import io.netty.handler.ssl.SupportedCipherSuiteFilter;
38 import io.netty.handler.ssl.util.SelfSignedCertificate;
39
40 /**
41 * An HTTP/2 Server that responds to requests with a Hello World. Once started, you can test the
42 * server with the example client.
43 */
44 public final class Http2Server {
45
46 static final boolean SSL = System.getProperty("ssl") != null;
47
48 static final int PORT = Integer.parseInt(System.getProperty("port", SSL? "8443" : "8080"));
49
50 public static void main(String[] args) throws Exception {
51 // Configure SSL.
52 final SslContext sslCtx;
53 if (SSL) {
54 SslProvider provider = OpenSsl.isAlpnSupported() ? SslProvider.OPENSSL : SslProvider.JDK;
55 SelfSignedCertificate ssc = new SelfSignedCertificate();
56 sslCtx = SslContextBuilder.forServer(ssc.certificate(), ssc.privateKey())
57 .sslProvider(provider)
58 /* NOTE: the cipher filter may not include all ciphers required by the HTTP/2 specification.
59 * Please refer to the HTTP/2 specification for cipher requirements. */
60 .ciphers(Http2SecurityUtil.CIPHERS, SupportedCipherSuiteFilter.INSTANCE)
61 .applicationProtocolConfig(new ApplicationProtocolConfig(
62 Protocol.ALPN,
63 // NO_ADVERTISE is currently the only mode supported by both OpenSsl and JDK providers.
64 SelectorFailureBehavior.NO_ADVERTISE,
65 // ACCEPT is currently the only mode supported by both OpenSsl and JDK providers.
66 SelectedListenerFailureBehavior.ACCEPT,
67 ApplicationProtocolNames.HTTP_2,
68 ApplicationProtocolNames.HTTP_1_1))
69 .build();
70 } else {
71 sslCtx = null;
72 }
73 // Configure the server.
74 EventLoopGroup group = new NioEventLoopGroup();
75 try {
76 ServerBootstrap b = new ServerBootstrap();
77 b.option(ChannelOption.SO_BACKLOG, 1024);
78 b.group(group)
79 .channel(NioServerSocketChannel.class)
80 .handler(new LoggingHandler(LogLevel.INFO))
81 .childHandler(new Http2ServerInitializer(sslCtx));
82
83 Channel ch = b.bind(PORT).sync().channel();
84
85 System.err.println("Open your HTTP/2-enabled web browser and navigate to " +
86 (SSL? "https" : "http") + "://127.0.0.1:" + PORT + '/');
87
88 ch.closeFuture().sync();
89 } finally {
90 group.shutdownGracefully();
91 }
92 }
93 }
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