Example usage for io.netty.handler.ssl SslContextBuilder forServer

Introduction

In this page you can find the example usage for io.netty.handler.ssl SslContextBuilder forServer.

Prototype

boolean forServer

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Usage

From source file:com.crystal.chat.SecureChatServer.java

License:Apache License

public static void main(String[] args) throws Exception {
    SelfSignedCertificate ssc = new SelfSignedCertificate();
    SslContext sslCtx = SslContextBuilder.forServer(ssc.certificate(), ssc.privateKey()).build();

    EventLoopGroup bossGroup = new NioEventLoopGroup(1);
    EventLoopGroup workerGroup = new NioEventLoopGroup();
    try {//from   ww  w.  jav  a2s  . c  om
        ServerBootstrap b = new ServerBootstrap();
        b.group(bossGroup, workerGroup)

                .channel(NioServerSocketChannel.class).option(ChannelType.op, ChannelType.TYPE_TCP)
                .handler(new LoggingHandler(LogLevel.INFO))
                .childHandler(new SecureChatServerInitializer(sslCtx));

        ChannelFuture future = b.bind("127.0.0.1", Port.PORT).sync().channel().closeFuture().sync();

    } catch (Exception ex) {
        ex.printStackTrace();
    } finally {
        bossGroup.shutdownGracefully();
        workerGroup.shutdownGracefully();
    }
}

---

From source file:com.ctrip.xpipe.redis.console.health.netty.EchoServer.java

License:Apache License

public static void main(String[] args) throws Exception {
    // Configure SSL.
    final SslContext sslCtx;
    if (SSL) {/* w  w w.  ja v  a2s .c  om*/
        SelfSignedCertificate ssc = new SelfSignedCertificate();
        sslCtx = SslContextBuilder.forServer(ssc.certificate(), ssc.privateKey()).build();
    } else {
        sslCtx = null;
    }

    // Configure the server.
    EventLoopGroup bossGroup = new NioEventLoopGroup(1);
    EventLoopGroup workerGroup = new NioEventLoopGroup();
    try {
        ServerBootstrap b = new ServerBootstrap();
        b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                .option(ChannelOption.SO_BACKLOG, 100).option(ChannelOption.TCP_NODELAY, true)
                .handler(new LoggingHandler(LogLevel.INFO))
                .childHandler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    public void initChannel(SocketChannel ch) throws Exception {
                        ChannelPipeline p = ch.pipeline();
                        if (sslCtx != null) {
                            p.addLast(sslCtx.newHandler(ch.alloc()));
                        }
                        //p.addLast(new LoggingHandler(LogLevel.INFO));
                        p.addLast(new EchoServerHandler());
                    }
                });

        // Start the server.
        ChannelFuture f = b.bind(PORT).sync();

        // Wait until the server socket is closed.
        f.channel().closeFuture().sync();
    } finally {
        // Shut down all event loops to terminate all threads.
        bossGroup.shutdownGracefully();
        workerGroup.shutdownGracefully();
    }
}

---

From source file:com.demo.netty.echo.EchoServer.java

License:Apache License

public static void main(String[] args) throws Exception {
    // Configure SSL.
    final SslContext sslCtx;
    if (SSL) {//  ww w . j  a  v a2s  . c  o  m
        SelfSignedCertificate ssc = new SelfSignedCertificate();
        sslCtx = SslContextBuilder.forServer(ssc.certificate(), ssc.privateKey()).build();
    } else {
        sslCtx = null;
    }

    //EventLoopGroup is  abstraction of Notification and Thread loop
    EventLoopGroup bossGroup = new NioEventLoopGroup(1);
    EventLoopGroup workerGroup = new NioEventLoopGroup();
    try {
        ServerBootstrap b = new ServerBootstrap();
        b.group(bossGroup, workerGroup) //
                .channel(NioServerSocketChannel.class) //
                .option(ChannelOption.SO_BACKLOG, 100).handler(new LoggingHandler(LogLevel.INFO))
                .childHandler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    public void initChannel(SocketChannel ch) throws Exception {
                        ChannelPipeline p = ch.pipeline();
                        if (sslCtx != null) {
                            p.addLast(sslCtx.newHandler(ch.alloc()));
                        }
                        //p.addLast(new LoggingHandler(LogLevel.INFO));
                        p.addLast(new EchoServerHandler());
                    }
                });

        // Start the server.
        ChannelFuture f = b.bind(PORT).sync();

        // Wait until the server socket is closed.
        f.channel().closeFuture().sync();
    } finally {
        // Shut down all event loops to terminate all threads.
        bossGroup.shutdownGracefully();
        workerGroup.shutdownGracefully();
    }
}

---

From source file:com.floragunn.searchguard.ssl.DefaultSearchGuardKeyStore.java

License:Apache License

private SslContext buildSSLServerContext(final PrivateKey _key, final X509Certificate[] _cert,
        final X509Certificate[] _trustedCerts, final Iterable<String> ciphers, final SslProvider sslProvider,
        final ClientAuth authMode) throws SSLException {

    final SslContextBuilder _sslContextBuilder = SslContextBuilder.forServer(_key, _cert).ciphers(ciphers)
            .applicationProtocolConfig(ApplicationProtocolConfig.DISABLED)
            .clientAuth(Objects.requireNonNull(authMode)) // https://github.com/netty/netty/issues/4722
            .sessionCacheSize(0).sessionTimeout(0).sslProvider(sslProvider);

    if (_trustedCerts != null && _trustedCerts.length > 0) {
        _sslContextBuilder.trustManager(_trustedCerts);
    }/*from   w  w  w . j  a  v  a 2  s.c o m*/

    return buildSSLContext0(_sslContextBuilder);
}

---

From source file:com.floragunn.searchguard.ssl.DefaultSearchGuardKeyStore.java

License:Apache License

private SslContext buildSSLServerContext(final File _key, final File _cert, final File _trustedCerts,
        final String pwd, final Iterable<String> ciphers, final SslProvider sslProvider,
        final ClientAuth authMode) throws SSLException {

    final SslContextBuilder _sslContextBuilder = SslContextBuilder.forServer(_cert, _key, pwd).ciphers(ciphers)
            .applicationProtocolConfig(ApplicationProtocolConfig.DISABLED)
            .clientAuth(Objects.requireNonNull(authMode)) // https://github.com/netty/netty/issues/4722
            .sessionCacheSize(0).sessionTimeout(0).sslProvider(sslProvider);

    if (_trustedCerts != null) {
        _sslContextBuilder.trustManager(_trustedCerts);
    }/* w ww  .j  a va  2s.  c  o m*/

    return buildSSLContext0(_sslContextBuilder);
}

---

From source file:com.floragunn.searchguard.ssl.SearchGuardKeyStore.java

License:Apache License

private void initSSLConfig() {

    final Environment env = new Environment(settings);
    log.info("Config directory is {}/, from there the key- and truststore files are resolved relatively",
            env.configFile().toAbsolutePath());

    if (transportSSLEnabled) {

        final String keystoreFilePath = env.configFile()
                .resolve(settings.get(SSLConfigConstants.SEARCHGUARD_SSL_TRANSPORT_KEYSTORE_FILEPATH, ""))
                .toAbsolutePath().toString();
        final String keystoreType = settings.get(SSLConfigConstants.SEARCHGUARD_SSL_TRANSPORT_KEYSTORE_TYPE,
                DEFAULT_STORE_TYPE);/*from  ww  w  .  ja v  a2 s . c  o m*/
        final String keystorePassword = settings
                .get(SSLConfigConstants.SEARCHGUARD_SSL_TRANSPORT_KEYSTORE_PASSWORD, DEFAULT_STORE_PASSWORD);
        final String keystoreAlias = settings.get(SSLConfigConstants.SEARCHGUARD_SSL_TRANSPORT_KEYSTORE_ALIAS,
                null);

        final String truststoreFilePath = env.configFile()
                .resolve(settings.get(SSLConfigConstants.SEARCHGUARD_SSL_TRANSPORT_TRUSTSTORE_FILEPATH, ""))
                .toAbsolutePath().toString();

        if (settings.get(SSLConfigConstants.SEARCHGUARD_SSL_TRANSPORT_KEYSTORE_FILEPATH, null) == null) {
            throw new ElasticsearchException(SSLConfigConstants.SEARCHGUARD_SSL_TRANSPORT_KEYSTORE_FILEPATH
                    + " must be set if transport ssl is reqested.");
        }

        checkStorePath(keystoreFilePath);

        if (settings.get(SSLConfigConstants.SEARCHGUARD_SSL_TRANSPORT_TRUSTSTORE_FILEPATH, null) == null) {
            throw new ElasticsearchException(SSLConfigConstants.SEARCHGUARD_SSL_TRANSPORT_TRUSTSTORE_FILEPATH
                    + " must be set if transport ssl is reqested.");
        }

        checkStorePath(truststoreFilePath);

        final String truststoreType = settings.get(SSLConfigConstants.SEARCHGUARD_SSL_TRANSPORT_TRUSTSTORE_TYPE,
                DEFAULT_STORE_TYPE);
        final String truststorePassword = settings
                .get(SSLConfigConstants.SEARCHGUARD_SSL_TRANSPORT_TRUSTSTORE_PASSWORD, DEFAULT_STORE_PASSWORD);
        final String truststoreAlias = settings
                .get(SSLConfigConstants.SEARCHGUARD_SSL_TRANSPORT_TRUSTSTORE_ALIAS, null);

        try {

            final KeyStore ks = KeyStore.getInstance(keystoreType);
            ks.load(new FileInputStream(new File(keystoreFilePath)),
                    (keystorePassword == null || keystorePassword.length() == 0) ? null
                            : keystorePassword.toCharArray());

            transportKeystoreCert = SSLCertificateHelper.exportCertificateChain(ks, keystoreAlias);
            transportKeystoreKey = SSLCertificateHelper.exportDecryptedKey(ks, keystoreAlias,
                    (keystorePassword == null || keystorePassword.length() == 0) ? null
                            : keystorePassword.toCharArray());

            if (transportKeystoreKey == null) {
                throw new ElasticsearchException(
                        "No key found in " + keystoreFilePath + " with alias " + keystoreAlias);
            }

            if (transportKeystoreCert != null && transportKeystoreCert.length > 0) {

                //TODO create sensitive log property
                /*for (int i = 0; i < transportKeystoreCert.length; i++) {
                X509Certificate x509Certificate = transportKeystoreCert[i];
                        
                if(x509Certificate != null) {
                    log.info("Transport keystore subject DN no. {} {}",i,x509Certificate.getSubjectX500Principal());
                }
                }*/
            } else {
                throw new ElasticsearchException(
                        "No certificates found in " + keystoreFilePath + " with alias " + keystoreAlias);
            }

            final KeyStore ts = KeyStore.getInstance(truststoreType);
            ts.load(new FileInputStream(new File(truststoreFilePath)),
                    (truststorePassword == null || truststorePassword.length() == 0) ? null
                            : truststorePassword.toCharArray());

            trustedTransportCertificates = SSLCertificateHelper.exportCertificateChain(ts, truststoreAlias);

            if (trustedTransportCertificates == null) {
                throw new ElasticsearchException("No truststore configured for server");
            }

            final SslContextBuilder sslServerContextBuilder = SslContextBuilder
                    .forServer(transportKeystoreKey, transportKeystoreCert)
                    .ciphers(getEnabledSSLCiphers(this.sslTransportServerProvider, false))
                    .applicationProtocolConfig(ApplicationProtocolConfig.DISABLED)
                    .clientAuth(ClientAuth.REQUIRE)
                    // https://github.com/netty/netty/issues/4722
                    .sessionCacheSize(0).sessionTimeout(0).sslProvider(this.sslTransportServerProvider)
                    .trustManager(trustedTransportCertificates);

            transportServerSslContext = buildSSLContext(sslServerContextBuilder);

            if (trustedTransportCertificates == null) {
                throw new ElasticsearchException("No truststore configured for client");
            }

            final SslContextBuilder sslClientContextBuilder = SslContextBuilder.forClient()
                    .ciphers(getEnabledSSLCiphers(sslTransportClientProvider, false))
                    .applicationProtocolConfig(ApplicationProtocolConfig.DISABLED).sessionCacheSize(0)
                    .sessionTimeout(0).sslProvider(sslTransportClientProvider)
                    .trustManager(trustedTransportCertificates)
                    .keyManager(transportKeystoreKey, transportKeystoreCert);

            transportClientSslContext = buildSSLContext(sslClientContextBuilder);

        } catch (final Exception e) {
            throw new ElasticsearchSecurityException(
                    "Error while initializing transport SSL layer: " + e.toString(), e);
        }

    }

    final boolean client = !"node".equals(this.settings.get(SearchGuardSSLPlugin.CLIENT_TYPE));

    if (!client && httpSSLEnabled) {
        final String keystoreFilePath = env.configFile()
                .resolve(settings.get(SSLConfigConstants.SEARCHGUARD_SSL_HTTP_KEYSTORE_FILEPATH, ""))
                .toAbsolutePath().toString();
        final String keystoreType = settings.get(SSLConfigConstants.SEARCHGUARD_SSL_HTTP_KEYSTORE_TYPE,
                DEFAULT_STORE_TYPE);
        final String keystorePassword = settings.get(SSLConfigConstants.SEARCHGUARD_SSL_HTTP_KEYSTORE_PASSWORD,
                DEFAULT_STORE_PASSWORD);
        final String keystoreAlias = settings.get(SSLConfigConstants.SEARCHGUARD_SSL_HTTP_KEYSTORE_ALIAS, null);
        httpClientAuthMode = ClientAuth.valueOf(settings
                .get(SSLConfigConstants.SEARCHGUARD_SSL_HTTP_CLIENTAUTH_MODE, ClientAuth.OPTIONAL.toString()));

        //TODO remove with next version
        String _enforceHTTPClientAuth = settings.get("searchguard.ssl.http.enforce_clientauth");

        if (_enforceHTTPClientAuth != null) {
            log.error("{} is deprecated and replaced by {}", "searchguard.ssl.http.enforce_clientauth",
                    SSLConfigConstants.SEARCHGUARD_SSL_HTTP_CLIENTAUTH_MODE);
            throw new RuntimeException("searchguard.ssl.http.enforce_clientauth is deprecated");
        }

        log.info("HTTPS client auth mode {}", httpClientAuthMode);

        final String truststoreFilePath = env.configFile()
                .resolve(settings.get(SSLConfigConstants.SEARCHGUARD_SSL_HTTP_TRUSTSTORE_FILEPATH, ""))
                .toAbsolutePath().toString();

        if (settings.get(SSLConfigConstants.SEARCHGUARD_SSL_HTTP_KEYSTORE_FILEPATH, null) == null) {
            throw new ElasticsearchException(SSLConfigConstants.SEARCHGUARD_SSL_HTTP_KEYSTORE_FILEPATH
                    + " must be set if https is reqested.");
        }

        checkStorePath(keystoreFilePath);

        if (httpClientAuthMode == ClientAuth.REQUIRE) {

            if (settings.get(SSLConfigConstants.SEARCHGUARD_SSL_HTTP_TRUSTSTORE_FILEPATH, null) == null) {
                throw new ElasticsearchException(SSLConfigConstants.SEARCHGUARD_SSL_HTTP_TRUSTSTORE_FILEPATH
                        + " must be set if http ssl and client auth is reqested.");
            }

        }

        try {

            final KeyStore ks = KeyStore.getInstance(keystoreType);
            ks.load(new FileInputStream(new File(keystoreFilePath)),
                    (keystorePassword == null || keystorePassword.length() == 0) ? null
                            : keystorePassword.toCharArray());

            httpKeystoreCert = SSLCertificateHelper.exportCertificateChain(ks, keystoreAlias);
            httpKeystoreKey = SSLCertificateHelper.exportDecryptedKey(ks, keystoreAlias,
                    (keystorePassword == null || keystorePassword.length() == 0) ? null
                            : keystorePassword.toCharArray());

            if (httpKeystoreKey == null) {
                throw new ElasticsearchException(
                        "No key found in " + keystoreFilePath + " with alias " + keystoreAlias);
            }

            if (httpKeystoreCert != null && httpKeystoreCert.length > 0) {

                //TODO create sensitive log property
                /*for (int i = 0; i < httpKeystoreCert.length; i++) {
                X509Certificate x509Certificate = httpKeystoreCert[i];
                        
                if(x509Certificate != null) {
                    log.info("HTTP keystore subject DN no. {} {}",i,x509Certificate.getSubjectX500Principal());
                }
                }*/
            } else {
                throw new ElasticsearchException(
                        "No certificates found in " + keystoreFilePath + " with alias " + keystoreAlias);
            }

            if (settings.get(SSLConfigConstants.SEARCHGUARD_SSL_HTTP_TRUSTSTORE_FILEPATH, null) != null) {

                checkStorePath(truststoreFilePath);

                final String truststoreType = settings
                        .get(SSLConfigConstants.SEARCHGUARD_SSL_HTTP_TRUSTSTORE_TYPE, DEFAULT_STORE_TYPE);
                final String truststorePassword = settings.get(
                        SSLConfigConstants.SEARCHGUARD_SSL_HTTP_TRUSTSTORE_PASSWORD, DEFAULT_STORE_PASSWORD);
                final String truststoreAlias = settings
                        .get(SSLConfigConstants.SEARCHGUARD_SSL_HTTP_TRUSTSTORE_ALIAS, null);

                final KeyStore ts = KeyStore.getInstance(truststoreType);
                ts.load(new FileInputStream(new File(truststoreFilePath)),
                        (truststorePassword == null || truststorePassword.length() == 0) ? null
                                : truststorePassword.toCharArray());

                trustedHTTPCertificates = SSLCertificateHelper.exportCertificateChain(ts, truststoreAlias);
            }

            final SslContextBuilder sslContextBuilder = SslContextBuilder
                    .forServer(httpKeystoreKey, httpKeystoreCert)
                    .ciphers(getEnabledSSLCiphers(this.sslHTTPProvider, true))
                    .applicationProtocolConfig(ApplicationProtocolConfig.DISABLED)
                    .clientAuth(Objects.requireNonNull(httpClientAuthMode)) // https://github.com/netty/netty/issues/4722
                    .sessionCacheSize(0).sessionTimeout(0).sslProvider(this.sslHTTPProvider);

            if (trustedHTTPCertificates != null && trustedHTTPCertificates.length > 0) {
                sslContextBuilder.trustManager(trustedHTTPCertificates);
            }

            httpSslContext = buildSSLContext(sslContextBuilder);

        } catch (final Exception e) {
            throw new ElasticsearchSecurityException("Error while initializing HTTP SSL layer: " + e.toString(),
                    e);
        }
    }
}

---

From source file:com.flysoloing.learning.network.netty.factorial.FactorialServer.java

License:Apache License

public static void main(String[] args) throws Exception {
    // Configure SSL.
    final SslContext sslCtx;
    if (SSL) {//from   w w w. ja  v  a 2 s. c o m
        SelfSignedCertificate ssc = new SelfSignedCertificate();
        sslCtx = SslContextBuilder.forServer(ssc.certificate(), ssc.privateKey()).build();
    } else {
        sslCtx = null;
    }

    EventLoopGroup bossGroup = new NioEventLoopGroup(1);
    EventLoopGroup workerGroup = new NioEventLoopGroup();
    try {
        ServerBootstrap b = new ServerBootstrap();
        b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                .handler(new LoggingHandler(LogLevel.INFO))
                .childHandler(new FactorialServerInitializer(sslCtx));

        b.bind(PORT).sync().channel().closeFuture().sync();
    } finally {
        bossGroup.shutdownGracefully();
        workerGroup.shutdownGracefully();
    }
}

---

From source file:com.flysoloing.learning.network.netty.file.FileServer.java

License:Apache License

public static void main(String[] args) throws Exception {
    // Configure SSL.
    final SslContext sslCtx;
    if (SSL) {/*from   w  w w  .  ja va 2 s. c om*/
        SelfSignedCertificate ssc = new SelfSignedCertificate();
        sslCtx = SslContextBuilder.forServer(ssc.certificate(), ssc.privateKey()).build();
    } else {
        sslCtx = null;
    }

    // Configure the server.
    EventLoopGroup bossGroup = new NioEventLoopGroup(1);
    EventLoopGroup workerGroup = new NioEventLoopGroup();
    try {
        ServerBootstrap b = new ServerBootstrap();
        b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                .option(ChannelOption.SO_BACKLOG, 100).handler(new LoggingHandler(LogLevel.INFO))
                .childHandler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    public void initChannel(SocketChannel ch) throws Exception {
                        ChannelPipeline p = ch.pipeline();
                        if (sslCtx != null) {
                            p.addLast(sslCtx.newHandler(ch.alloc()));
                        }
                        p.addLast(new StringEncoder(CharsetUtil.UTF_8), new LineBasedFrameDecoder(8192),
                                new StringDecoder(CharsetUtil.UTF_8), new ChunkedWriteHandler(),
                                new FileServerHandler());
                    }
                });

        // Start the server.
        ChannelFuture f = b.bind(PORT).sync();

        // Wait until the server socket is closed.
        f.channel().closeFuture().sync();
    } finally {
        // Shut down all event loops to terminate all threads.
        bossGroup.shutdownGracefully();
        workerGroup.shutdownGracefully();
    }
}

---

From source file:com.flysoloing.learning.network.netty.http.helloworld.HttpHelloWorldServer.java

License:Apache License

public static void main(String[] args) throws Exception {
    // Configure SSL.
    final SslContext sslCtx;
    if (SSL) {//w w  w .  j a  v a 2 s.  c  om
        SelfSignedCertificate ssc = new SelfSignedCertificate();
        sslCtx = SslContextBuilder.forServer(ssc.certificate(), ssc.privateKey()).build();
    } else {
        sslCtx = null;
    }

    // Configure the server.
    EventLoopGroup bossGroup = new NioEventLoopGroup(1);
    EventLoopGroup workerGroup = new NioEventLoopGroup();
    try {
        ServerBootstrap b = new ServerBootstrap();
        b.option(ChannelOption.SO_BACKLOG, 1024);
        b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
                .handler(new LoggingHandler(LogLevel.INFO))
                .childHandler(new HttpHelloWorldServerInitializer(sslCtx));

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

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

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

---

From source file:com.flysoloing.learning.network.netty.http2.helloworld.multiplex.server.Http2Server.java

License:Apache License

public static void main(String[] args) throws Exception {
    // Configure SSL.
    final SslContext sslCtx;
    if (SSL) {/*from   ww w  .  jav a2  s .  c o  m*/
        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 group = new NioEventLoopGroup();
    try {
        ServerBootstrap b = new ServerBootstrap();
        b.option(ChannelOption.SO_BACKLOG, 1024);
        b.group(group).channel(NioServerSocketChannel.class).handler(new LoggingHandler(LogLevel.INFO))
                .childHandler(new Http2ServerInitializer(sslCtx));

        Channel ch = b.bind(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 {
        group.shutdownGracefully();
    }
}

---

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