Examples with ServerBootstrap org.apache.flink.shaded.netty4.io.netty.bootstrap.ServerBootstrap used on opensource projects

Example 16 with ServerBootstrap

use of org.apache.flink.shaded.netty4.io.netty.bootstrap.ServerBootstrap in project netty by netty.

the class NioSocketChannelTest method testChannelReRegisterRead.

private static void testChannelReRegisterRead(final boolean sameEventLoop) throws Exception {
    final EventLoopGroup group = new NioEventLoopGroup(2);
    final CountDownLatch latch = new CountDownLatch(1);
    // Just some random bytes
    byte[] bytes = new byte[1024];
    PlatformDependent.threadLocalRandom().nextBytes(bytes);
    Channel sc = null;
    Channel cc = null;
    ServerBootstrap b = new ServerBootstrap();
    try {
        b.group(group).channel(NioServerSocketChannel.class).childOption(ChannelOption.SO_KEEPALIVE, true).childHandler(new ChannelInitializer<Channel>() {

            @Override
            protected void initChannel(Channel ch) throws Exception {
                ChannelPipeline pipeline = ch.pipeline();
                pipeline.addLast(new SimpleChannelInboundHandler<ByteBuf>() {

                    @Override
                    protected void channelRead0(ChannelHandlerContext ctx, ByteBuf byteBuf) {
                        // We was able to read something from the Channel after reregister.
                        latch.countDown();
                    }

                    @Override
                    public void channelActive(final ChannelHandlerContext ctx) throws Exception {
                        final EventLoop loop = group.next();
                        if (sameEventLoop) {
                            deregister(ctx, loop);
                        } else {
                            loop.execute(new Runnable() {

                                @Override
                                public void run() {
                                    deregister(ctx, loop);
                                }
                            });
                        }
                    }

                    private void deregister(ChannelHandlerContext ctx, final EventLoop loop) {
                        // As soon as the channel becomes active re-register it to another
                        // EventLoop. After this is done we should still receive the data that
                        // was written to the channel.
                        ctx.deregister().addListener(new ChannelFutureListener() {

                            @Override
                            public void operationComplete(ChannelFuture cf) {
                                Channel channel = cf.channel();
                                assertNotSame(loop, channel.eventLoop());
                                group.next().register(channel);
                            }
                        });
                    }
                });
            }
        });
        sc = b.bind(0).syncUninterruptibly().channel();
        Bootstrap bootstrap = new Bootstrap();
        bootstrap.group(group).channel(NioSocketChannel.class);
        bootstrap.handler(new ChannelInboundHandlerAdapter());
        cc = bootstrap.connect(sc.localAddress()).syncUninterruptibly().channel();
        cc.writeAndFlush(Unpooled.wrappedBuffer(bytes)).syncUninterruptibly();
        latch.await();
    } finally {
        if (cc != null) {
            cc.close();
        }
        if (sc != null) {
            sc.close();
        }
        group.shutdownGracefully();
    }
}

Example 17 with ServerBootstrap

use of org.apache.flink.shaded.netty4.io.netty.bootstrap.ServerBootstrap in project netty by netty.

the class NioSocketChannelTest method testFlushAfterGatheredFlush.

/**
     * Reproduces the issue #1679
     */
@Test
public void testFlushAfterGatheredFlush() throws Exception {
    NioEventLoopGroup group = new NioEventLoopGroup(1);
    try {
        ServerBootstrap sb = new ServerBootstrap();
        sb.group(group).channel(NioServerSocketChannel.class);
        sb.childHandler(new ChannelInboundHandlerAdapter() {

            @Override
            public void channelActive(final ChannelHandlerContext ctx) throws Exception {
                // Trigger a gathering write by writing two buffers.
                ctx.write(Unpooled.wrappedBuffer(new byte[] { 'a' }));
                ChannelFuture f = ctx.write(Unpooled.wrappedBuffer(new byte[] { 'b' }));
                f.addListener(new ChannelFutureListener() {

                    @Override
                    public void operationComplete(ChannelFuture future) throws Exception {
                        // This message must be flushed
                        ctx.writeAndFlush(Unpooled.wrappedBuffer(new byte[] { 'c' }));
                    }
                });
                ctx.flush();
            }
        });
        SocketAddress address = sb.bind(0).sync().channel().localAddress();
        Socket s = new Socket(NetUtil.LOCALHOST, ((InetSocketAddress) address).getPort());
        DataInput in = new DataInputStream(s.getInputStream());
        byte[] buf = new byte[3];
        in.readFully(buf);
        assertThat(new String(buf, CharsetUtil.US_ASCII), is("abc"));
        s.close();
    } finally {
        group.shutdownGracefully().sync();
    }
}

Example 18 with ServerBootstrap

use of org.apache.flink.shaded.netty4.io.netty.bootstrap.ServerBootstrap in project netty by netty.

the class FixedChannelPoolTest method testAcquireTimeout.

@Test(expected = TimeoutException.class)
public void testAcquireTimeout() throws Exception {
    EventLoopGroup group = new LocalEventLoopGroup();
    LocalAddress addr = new LocalAddress(LOCAL_ADDR_ID);
    Bootstrap cb = new Bootstrap();
    cb.remoteAddress(addr);
    cb.group(group).channel(LocalChannel.class);
    ServerBootstrap sb = new ServerBootstrap();
    sb.group(group).channel(LocalServerChannel.class).childHandler(new ChannelInitializer<LocalChannel>() {

        @Override
        public void initChannel(LocalChannel ch) throws Exception {
            ch.pipeline().addLast(new ChannelInboundHandlerAdapter());
        }
    });
    // Start server
    Channel sc = sb.bind(addr).syncUninterruptibly().channel();
    ChannelPoolHandler handler = new TestChannelPoolHandler();
    ChannelPool pool = new FixedChannelPool(cb, handler, ChannelHealthChecker.ACTIVE, AcquireTimeoutAction.FAIL, 500, 1, Integer.MAX_VALUE);
    Channel channel = pool.acquire().syncUninterruptibly().getNow();
    Future<Channel> future = pool.acquire();
    try {
        future.syncUninterruptibly();
    } finally {
        sc.close().syncUninterruptibly();
        channel.close().syncUninterruptibly();
        group.shutdownGracefully();
    }
}

Example 19 with ServerBootstrap

use of org.apache.flink.shaded.netty4.io.netty.bootstrap.ServerBootstrap in project cradle by BingLau7.

the class EchoServer method start.

void start() throws Exception {
    // 创建 Event-LoopGroup
    NioEventLoopGroup group = new NioEventLoopGroup();
    try {
        // 创建 Server-Bootstrap
        ServerBootstrap b = new ServerBootstrap();
        b.group(group).channel(NioServerSocketChannel.class).localAddress(new InetSocketAddress(port)).childHandler(new ChannelInitializer<SocketChannel>() {

            protected void initChannel(SocketChannel socketChannel) throws Exception {
                socketChannel.pipeline().addLast(new EchoServerHandler());
            }
        });
        // 异步地绑定服务器；调用 sync() 方法阻塞等待直到绑定完成
        ChannelFuture f = b.bind().sync();
        System.out.println(EchoServer.class.getName() + " started and listen on " + f.channel().localAddress());
        // 获取 Channel 的 CloseFuture，并且阻塞当前线程直到它完成
        f.channel().closeFuture().sync();
    } finally {
        // 关闭 EventLoopGroup，释放所有的资源
        group.shutdownGracefully().sync();
    }
}

Example 20 with ServerBootstrap

use of org.apache.flink.shaded.netty4.io.netty.bootstrap.ServerBootstrap in project cradle by BingLau7.

the class NettyNioServer method server.

public void server(int port) throws Exception {
    final ByteBuf buf = Unpooled.unreleasableBuffer(Unpooled.copiedBuffer("Hi!\r\n", Charset.forName("UTF-8")));
    // 为非阻塞模式使用 NioEventLoopGroup
    NioEventLoopGroup group = new NioEventLoopGroup();
    try {
        // 创建 ServerBootstrap
        ServerBootstrap b = new ServerBootstrap();
        b.group(group).channel(NioServerSocketChannel.class).localAddress(new InetSocketAddress(port)).childHandler(new ChannelInitializer<SocketChannel>() {

            @Override
            public void initChannel(SocketChannel ch) throws Exception {
                // 添加一个 ChannelInBoundHandlerAdapter 以拦截和处理事件
                ch.pipeline().addLast(new ChannelInboundHandlerAdapter() {

                    @Override
                    public void channelActive(ChannelHandlerContext ctx) throws Exception {
                        // 将消息写到客户端，并添加 ChannelFutureListener 以便消息已被写完就关闭连接
                        ctx.writeAndFlush(buf.duplicate()).addListener(ChannelFutureListener.CLOSE);
                    }
                });
            }
        });
        // 绑定服务器以接收连接
        ChannelFuture f = b.bind().sync();
        f.channel().closeFuture().sync();
    } finally {
        // 释放所有资源
        group.shutdownGracefully().sync();
    }
}