Example usage for io.netty.channel ChannelOption SO_KEEPALIVE

Introduction

In this page you can find the example usage for io.netty.channel ChannelOption SO_KEEPALIVE.

Prototype

ChannelOption SO_KEEPALIVE

To view the source code for io.netty.channel ChannelOption SO_KEEPALIVE.

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Usage

From source file:com.example.client.ClientMain.java

License:Apache License

public void run() throws InterruptedException {
    final NioEventLoopGroup workerLoop = new NioEventLoopGroup();
    try (final GracefulShutdown ignored = GracefulShutdown.gracefulShutdown(workerLoop::shutdownGracefully)) {
        final Bootstrap bootstrap = new Bootstrap(); // ServerBootstrap ??????????
        final ChannelFuture future = bootstrap.group(workerLoop) // ??? ????? boss /worker ??????
                .channel(NioSocketChannel.class) // NioServerSocketChannel ???????
                .option(ChannelOption.SO_KEEPALIVE, true) // ???? parent ??????? childOption ????
                .handler(ClientChannelInitializerConfigurer.channelInitializer()).connect(host, port) // bind ????? connect
                .sync();//from w w  w  . j  a  v  a2  s .  co  m
        future.channel().closeFuture().sync();
    }
}

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From source file:com.example.discard.DiscardServerMain.java

License:Apache License

public void run() throws Exception {
    final NioEventLoopGroup bossGroup = new NioEventLoopGroup();//1
    final NioEventLoopGroup workerGroup = new NioEventLoopGroup();
    try (AutoCloseable ignore = new ShutDownGracefully(bossGroup, workerGroup)) {
        final ServerBootstrap bootstrap = new ServerBootstrap();//2
        bootstrap.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)//3
                .childHandler(new ChannelInitializer<SocketChannel>() {//4
                    @Override/*from  w  ww . j a  v  a  2 s.  c om*/
                    protected void initChannel(final SocketChannel ch) {
                        ch.pipeline().addLast(new DiscardServerHandler());
                    }
                }).option(ChannelOption.SO_BACKLOG, 128)//5
                .childOption(ChannelOption.SO_KEEPALIVE, true); //6
        final ChannelFuture channelFuture = bootstrap.bind(port).sync();//7
        channelFuture.channel().closeFuture().sync();
    }
}

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From source file:com.example.server.ServerMain.java

License:Apache License

public void run() throws InterruptedException {
    final NioEventLoopGroup parentGroup = new NioEventLoopGroup();
    final NioEventLoopGroup workerGroup = new NioEventLoopGroup();

    try (final GracefulShutdown ignored = GracefulShutdown.gracefulShutdown(parentGroup::shutdownGracefully,
            workerGroup::shutdownGracefully)) {
        final ServerBootstrap bootstrap = new ServerBootstrap();
        bootstrap.group(parentGroup, workerGroup).channel(NioServerSocketChannel.class)
                .childHandler(ServerChannelInitializationConfigurer.channelInitializer())
                .option(ChannelOption.SO_BACKLOG, 128).childOption(ChannelOption.SO_KEEPALIVE, true);
        log.info("server start");
        final ChannelFuture channelFuture = bootstrap.bind(port).sync();
        channelFuture.channel().closeFuture().sync();
    }/* w  w  w . j  a v  a2s  .c  om*/
}

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From source file:com.farsunset.cim.sdk.android.CIMConnectorManager.java

License:Apache License

private CIMConnectorManager(Context ctx) {
    context = ctx;/*from  w ww. j  ava  2s.c  om*/

    bootstrap = new Bootstrap();
    loopGroup = new NioEventLoopGroup(1);
    bootstrap.group(loopGroup);
    bootstrap.channel(NioSocketChannel.class);
    bootstrap.option(ChannelOption.TCP_NODELAY, true);
    bootstrap.option(ChannelOption.SO_KEEPALIVE, true);
    bootstrap.option(ChannelOption.CONNECT_TIMEOUT_MILLIS, CONNECT_TIMEOUT);
    bootstrap.handler(new ChannelInitializer<SocketChannel>() {
        @Override
        public void initChannel(SocketChannel ch) throws Exception {
            ch.pipeline().addLast(new ClientMessageDecoder());
            ch.pipeline().addLast(new ClientMessageEncoder());
            ch.pipeline().addLast(new IdleStateHandler(READ_IDLE_TIME, 0, 0));
            ch.pipeline().addLast(CIMLoggingHandler.getLogger());
            ch.pipeline().addLast(CIMConnectorManager.this);
        }
    });

}

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From source file:com.farsunset.cim.sdk.server.handler.CIMNioSocketAcceptor.java

License:Apache License

public void bind() throws IOException {

    /**/*from   ww w.ja  va 2 s  . co m*/
     * websocket??
     */
    innerHandlerMap.put(WEBSOCKET_HANDLER_KEY, new WebsocketHandler());

    ServerBootstrap bootstrap = new ServerBootstrap();
    bootstrap.group(new NioEventLoopGroup(), new NioEventLoopGroup());
    bootstrap.childOption(ChannelOption.TCP_NODELAY, true);
    bootstrap.childOption(ChannelOption.SO_KEEPALIVE, true);
    bootstrap.channel(NioServerSocketChannel.class);
    bootstrap.childHandler(new ChannelInitializer<SocketChannel>() {
        @Override
        public void initChannel(SocketChannel ch) throws Exception {

            ch.pipeline().addLast(new ServerMessageDecoder());
            ch.pipeline().addLast(new ServerMessageEncoder());
            ch.pipeline().addLast(new LoggingHandler(LogLevel.INFO));
            ch.pipeline().addLast(new IdleStateHandler(READ_IDLE_TIME, WRITE_IDLE_TIME, 0));
            ch.pipeline().addLast(CIMNioSocketAcceptor.this);
        }
    });

    bootstrap.bind(port);
}

---

From source file:com.fjn.helper.frameworkex.netty.v4.discardserver.DiscardServer.java

License:Apache License

public void run() throws Exception {
    EventLoopGroup bossGroup = new NioEventLoopGroup(); // (1)
    EventLoopGroup workerGroup = new NioEventLoopGroup();
    try {//  www.j a v a 2  s. c  o  m
        ServerBootstrap b = new ServerBootstrap(); // (2)
        b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class) // (3)
                .childHandler(new ChannelInitializer<SocketChannel>() { // (4)
                    @Override
                    public void initChannel(SocketChannel ch) throws Exception {
                        ch.pipeline().addLast(new DiscardServerHandler());
                    }
                }).option(ChannelOption.SO_BACKLOG, 128) // (5)
                .childOption(ChannelOption.SO_KEEPALIVE, true); // (6)

        // Bind and start to accept incoming connections.
        ChannelFuture f = b.bind(port).sync(); // (7)

        // Wait until the server socket is closed.
        // In this example, this does not happen, but you can do that to
        // gracefully
        // shut down your server.
        f.channel().closeFuture().sync();
    } finally {
        workerGroup.shutdownGracefully();
        bossGroup.shutdownGracefully();
    }
}

---

From source file:com.fjn.helper.frameworkex.netty.v4.timetest.TimeClient.java

License:Apache License

public static void main(String[] args) throws Exception {
    String host = args[0];/*ww  w . j a v  a2  s  .c om*/
    int port = Integer.parseInt(args[1]);
    EventLoopGroup workerGroup = new NioEventLoopGroup();

    try {
        Bootstrap b = new Bootstrap(); // (1)
        b.group(workerGroup); // (2)
        b.channel(NioSocketChannel.class); // (3)
        b.option(ChannelOption.SO_KEEPALIVE, true); // (4)
        b.handler(new ChannelInitializer<SocketChannel>() {
            @Override
            public void initChannel(SocketChannel ch) throws Exception {
                ch.pipeline().addLast(new TimeClientHandler());
            }
        });

        // Start the client.
        ChannelFuture f = b.connect(host, port).sync(); // (5)

        // Wait until the connection is closed.
        f.channel().closeFuture().sync();
    } finally {
        workerGroup.shutdownGracefully();
    }
}

---

From source file:com.flowpowered.network.NetworkServer.java

License:MIT License

public NetworkServer() {
    bootstrap.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
            .childHandler(new BasicChannelInitializer(this)).childOption(ChannelOption.TCP_NODELAY, true)
            .childOption(ChannelOption.SO_KEEPALIVE, true);
}

---

From source file:com.flysoloing.learning.network.netty.http2.helloworld.client.Http2Client.java

License:Apache License

public static void main(String[] args) throws Exception {
    // Configure SSL.
    final SslContext sslCtx;
    if (SSL) {//from w w  w.  java 2s.c o m
        SslProvider provider = OpenSsl.isAlpnSupported() ? SslProvider.OPENSSL : SslProvider.JDK;
        sslCtx = SslContextBuilder.forClient().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)
                .trustManager(InsecureTrustManagerFactory.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;
    }

    EventLoopGroup workerGroup = new NioEventLoopGroup();
    Http2ClientInitializer initializer = new Http2ClientInitializer(sslCtx, Integer.MAX_VALUE);

    try {
        // Configure the client.
        Bootstrap b = new Bootstrap();
        b.group(workerGroup);
        b.channel(NioSocketChannel.class);
        b.option(ChannelOption.SO_KEEPALIVE, true);
        b.remoteAddress(HOST, PORT);
        b.handler(initializer);

        // Start the client.
        Channel channel = b.connect().syncUninterruptibly().channel();
        System.out.println("Connected to [" + HOST + ':' + PORT + ']');

        // Wait for the HTTP/2 upgrade to occur.
        Http2SettingsHandler http2SettingsHandler = initializer.settingsHandler();
        http2SettingsHandler.awaitSettings(5, TimeUnit.SECONDS);

        HttpResponseHandler responseHandler = initializer.responseHandler();
        int streamId = 3;
        HttpScheme scheme = SSL ? HttpScheme.HTTPS : HttpScheme.HTTP;
        AsciiString hostName = new AsciiString(HOST + ':' + PORT);
        System.err.println("Sending request(s)...");
        if (URL != null) {
            // Create a simple GET request.
            FullHttpRequest request = new DefaultFullHttpRequest(HTTP_1_1, GET, URL);
            request.headers().add(HttpHeaderNames.HOST, hostName);
            request.headers().add(HttpConversionUtil.ExtensionHeaderNames.SCHEME.text(), scheme.name());
            request.headers().add(HttpHeaderNames.ACCEPT_ENCODING, HttpHeaderValues.GZIP);
            request.headers().add(HttpHeaderNames.ACCEPT_ENCODING, HttpHeaderValues.DEFLATE);
            responseHandler.put(streamId, channel.write(request), channel.newPromise());
            streamId += 2;
        }
        if (URL2 != null) {
            // Create a simple POST request with a body.
            FullHttpRequest request = new DefaultFullHttpRequest(HTTP_1_1, POST, URL2,
                    wrappedBuffer(URL2DATA.getBytes(CharsetUtil.UTF_8)));
            request.headers().add(HttpHeaderNames.HOST, hostName);
            request.headers().add(HttpConversionUtil.ExtensionHeaderNames.SCHEME.text(), scheme.name());
            request.headers().add(HttpHeaderNames.ACCEPT_ENCODING, HttpHeaderValues.GZIP);
            request.headers().add(HttpHeaderNames.ACCEPT_ENCODING, HttpHeaderValues.DEFLATE);
            responseHandler.put(streamId, channel.write(request), channel.newPromise());
        }
        channel.flush();
        responseHandler.awaitResponses(5, TimeUnit.SECONDS);
        System.out.println("Finished HTTP/2 request(s)");

        // Wait until the connection is closed.
        channel.close().syncUninterruptibly();
    } finally {
        workerGroup.shutdownGracefully();
    }
}

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From source file:com.flysoloing.learning.network.netty.socksproxy.SocksServerConnectHandler.java

License:Apache License

@Override
public void channelRead0(final ChannelHandlerContext ctx, final SocksMessage message) throws Exception {
    if (message instanceof Socks4CommandRequest) {
        final Socks4CommandRequest request = (Socks4CommandRequest) message;
        Promise<Channel> promise = ctx.executor().newPromise();
        promise.addListener(new FutureListener<Channel>() {
            public void operationComplete(final Future<Channel> future) throws Exception {
                final Channel outboundChannel = future.getNow();
                if (future.isSuccess()) {
                    ChannelFuture responseFuture = ctx.channel()
                            .writeAndFlush(new DefaultSocks4CommandResponse(Socks4CommandStatus.SUCCESS));

                    responseFuture.addListener(new ChannelFutureListener() {
                        public void operationComplete(ChannelFuture channelFuture) {
                            ctx.pipeline().remove(SocksServerConnectHandler.this);
                            outboundChannel.pipeline().addLast(new RelayHandler(ctx.channel()));
                            ctx.pipeline().addLast(new RelayHandler(outboundChannel));
                        }/* w  ww.j  a  v  a 2  s  .  c o m*/
                    });
                } else {
                    ctx.channel().writeAndFlush(
                            new DefaultSocks4CommandResponse(Socks4CommandStatus.REJECTED_OR_FAILED));
                    SocksServerUtils.closeOnFlush(ctx.channel());
                }
            }
        });

        final Channel inboundChannel = ctx.channel();
        b.group(inboundChannel.eventLoop()).channel(NioSocketChannel.class)
                .option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 10000).option(ChannelOption.SO_KEEPALIVE, true)
                .handler(new DirectClientHandler(promise));

        b.connect(request.dstAddr(), request.dstPort()).addListener(new ChannelFutureListener() {
            public void operationComplete(ChannelFuture future) throws Exception {
                if (future.isSuccess()) {
                    // Connection established use handler provided results
                } else {
                    // Close the connection if the connection attempt has failed.
                    ctx.channel().writeAndFlush(
                            new DefaultSocks4CommandResponse(Socks4CommandStatus.REJECTED_OR_FAILED));
                    SocksServerUtils.closeOnFlush(ctx.channel());
                }
            }
        });
    } else if (message instanceof Socks5CommandRequest) {
        final Socks5CommandRequest request = (Socks5CommandRequest) message;
        Promise<Channel> promise = ctx.executor().newPromise();
        promise.addListener(new FutureListener<Channel>() {
            public void operationComplete(final Future<Channel> future) throws Exception {
                final Channel outboundChannel = future.getNow();
                if (future.isSuccess()) {
                    ChannelFuture responseFuture = ctx.channel()
                            .writeAndFlush(new DefaultSocks5CommandResponse(Socks5CommandStatus.SUCCESS,
                                    request.dstAddrType(), request.dstAddr(), request.dstPort()));

                    responseFuture.addListener(new ChannelFutureListener() {
                        public void operationComplete(ChannelFuture channelFuture) {
                            ctx.pipeline().remove(SocksServerConnectHandler.this);
                            outboundChannel.pipeline().addLast(new RelayHandler(ctx.channel()));
                            ctx.pipeline().addLast(new RelayHandler(outboundChannel));
                        }
                    });
                } else {
                    ctx.channel().writeAndFlush(new DefaultSocks5CommandResponse(Socks5CommandStatus.FAILURE,
                            request.dstAddrType()));
                    SocksServerUtils.closeOnFlush(ctx.channel());
                }
            }
        });

        final Channel inboundChannel = ctx.channel();
        b.group(inboundChannel.eventLoop()).channel(NioSocketChannel.class)
                .option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 10000).option(ChannelOption.SO_KEEPALIVE, true)
                .handler(new DirectClientHandler(promise));

        b.connect(request.dstAddr(), request.dstPort()).addListener(new ChannelFutureListener() {
            public void operationComplete(ChannelFuture future) throws Exception {
                if (future.isSuccess()) {
                    // Connection established use handler provided results
                } else {
                    // Close the connection if the connection attempt has failed.
                    ctx.channel().writeAndFlush(new DefaultSocks5CommandResponse(Socks5CommandStatus.FAILURE,
                            request.dstAddrType()));
                    SocksServerUtils.closeOnFlush(ctx.channel());
                }
            }
        });
    } else {
        ctx.close();
    }
}

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