Example usage for io.netty.channel ChannelInitializer ChannelInitializer

List of usage examples for io.netty.channel ChannelInitializer ChannelInitializer

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Introduction

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

Prototype

ChannelInitializer

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Usage

From source file:com.sixmac.imspeak.app.WebSocketClient.java

License:Apache License

public static void main(String[] args) throws Exception {
    URI uri = new URI(URL);
    String scheme = uri.getScheme() == null ? "ws" : uri.getScheme();
    final String host = uri.getHost() == null ? "127.0.0.1" : uri.getHost();
    final int port;
    if (uri.getPort() == -1) {
        if ("ws".equalsIgnoreCase(scheme)) {
            port = 80;/* w w w  . j av a 2  s .com*/
        } else if ("wss".equalsIgnoreCase(scheme)) {
            port = 443;
        } else {
            port = -1;
        }
    } else {
        port = uri.getPort();
    }

    if (!"ws".equalsIgnoreCase(scheme) && !"wss".equalsIgnoreCase(scheme)) {
        System.err.println("Only WS(S) is supported.");
        return;
    }

    final boolean ssl = "wss".equalsIgnoreCase(scheme);
    final SslContext sslCtx;

    EventLoopGroup group = new NioEventLoopGroup();
    try {
        // Connect with V13 (RFC 6455 aka HyBi-17). You can change it to V08 or V00.
        // If you change it to V00, ping is not supported and remember to change
        // HttpResponseDecoder to WebSocketHttpResponseDecoder in the pipeline.
        final WebSocketClientHandler handler = new WebSocketClientHandler(WebSocketClientHandshakerFactory
                .newHandshaker(uri, WebSocketVersion.V13, null, false, new DefaultHttpHeaders()));

        Bootstrap b = new Bootstrap();
        b.group(group).channel(NioSocketChannel.class).handler(new ChannelInitializer<SocketChannel>() {
            @Override
            protected void initChannel(SocketChannel ch) {
                ChannelPipeline p = ch.pipeline();
                p.addLast(new HttpClientCodec(), new HttpObjectAggregator(8192), handler);
            }
        });

        Channel ch = b.connect(uri.getHost(), port).sync().channel();
        handler.handshakeFuture().sync();

        BufferedReader console = new BufferedReader(new InputStreamReader(System.in));
        while (true) {
            String msg = console.readLine();
            if (msg == null) {
                break;
            } else if ("bye".equals(msg.toLowerCase())) {
                ch.writeAndFlush(new CloseWebSocketFrame());
                ch.closeFuture().sync();
                break;
            } else if ("ping".equals(msg.toLowerCase())) {
                WebSocketFrame frame = new PingWebSocketFrame(
                        Unpooled.wrappedBuffer(new byte[] { 8, 1, 8, 1 }));
                ch.writeAndFlush(frame);
            } else {
                WebSocketFrame frame = new TextWebSocketFrame(msg);
                ch.writeAndFlush(frame);
            }
        }
    } finally {
        group.shutdownGracefully();
    }
}

From source file:com.slyak.services.proxy.handler.Socks5CommandRequestHandler.java

License:Apache License

@Override
protected void channelRead0(final ChannelHandlerContext requestChannelContext,
        final DefaultSocks5CommandRequest msg) throws Exception {
    if (Socks5CommandType.CONNECT.equals(msg.type())) {
        log.debug("Start to connect remote server : {}:{}", msg.dstAddr(), msg.dstPort());
        Bootstrap bootstrap = new Bootstrap();
        bootstrap.group(remoteEventLoopGroup).channel(NioSocketChannel.class)
                .handler(new ChannelInitializer<SocketChannel>() {
                    @Override//from  ww  w  . ja va  2  s .com
                    protected void initChannel(SocketChannel ch) throws Exception {
                        ChannelPipeline pipeline = ch.pipeline();
                        pipeline.addLast(new IdleStateHandler(0, 0, 30));
                        pipeline.addLast(new IdleEventHandler());
                        pipeline.addLast(new Remote2RequestHandler(requestChannelContext.channel()));
                        pipeline.addLast(ExceptionHandler.INSTANCE);
                    }
                });
        final ChannelFuture future = bootstrap.connect(msg.dstAddr(), msg.dstPort());
        this.remoteChannel = future.channel();
        future.addListener(new ChannelFutureListener() {
            @Override
            public void operationComplete(final ChannelFuture connectFuture) throws Exception {
                if (connectFuture.isSuccess()) {
                    log.debug("Connected to remote server");
                    requestChannelContext.pipeline().addLast(new Request2RemoteHandler(remoteChannel));
                    Socks5CommandResponse response = new DefaultSocks5CommandResponse(
                            Socks5CommandStatus.SUCCESS, Socks5AddressType.IPv4);
                    //add client to dest handler to receive response
                    requestChannelContext.writeAndFlush(response);
                } else {
                    log.debug("Failed to connect to remote server");
                    Socks5CommandResponse commandResponse = new DefaultSocks5CommandResponse(
                            Socks5CommandStatus.FAILURE, Socks5AddressType.IPv4);
                    requestChannelContext.writeAndFlush(commandResponse);
                }
            }
        });
    } else {
        log.debug("Fire channel read");
        requestChannelContext.fireChannelRead(msg);
    }
}

From source file:com.slyak.services.proxy.server.NettyProxyServer.java

License:Apache License

@SneakyThrows(InterruptedException.class)
public void start() {
    ResourceLeakDetector.setLevel(ResourceLeakDetector.Level.ADVANCED);
    ServerBootstrap bootstrap = new ServerBootstrap();
    bossGroup = new NioEventLoopGroup(proxyProperties.getBoss());
    workerGroup = new NioEventLoopGroup(proxyProperties.getWorker());
    clientGroup = new NioEventLoopGroup(proxyProperties.getClient());
    try {//  w  w w.j  a v  a2  s .c  om
        bootstrap.group(bossGroup, workerGroup).channel(getChannelClass())
                .option(ChannelOption.SO_BACKLOG, proxyProperties.getBackLog())
                .option(ChannelOption.CONNECT_TIMEOUT_MILLIS, proxyProperties.getConnectTimeout())

                .childOption(ChannelOption.TCP_NODELAY, true).childOption(ChannelOption.SO_REUSEADDR, true)

                .childHandler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    protected void initChannel(SocketChannel ch) throws Exception {
                        ChannelPipeline pipeline = ch.pipeline();
                        //channel time out handler
                        pipeline.addLast(new IdleStateHandler(0, 0, 30));
                        pipeline.addLast(new IdleEventHandler());
                        //logging
                        pipeline.addLast(new LoggingHandler());

                        if (isRouter()) {
                            pipeline.addLast(getProxyHandler(proxyProperties));
                        } else {
                            pipeline.addLast(getCustomChannelHandlers(clientGroup));
                        }
                        pipeline.addLast(ExceptionHandler.INSTANCE);
                    }
                });
        //start server
        ChannelFuture future = bootstrap.bind(proxyProperties.getPort()).sync();
        log.debug("Starting proxy server , port is {}", proxyProperties.getPort());
        future.channel().closeFuture().sync();
    } finally {
        stop();
    }
}

From source file:com.spotify.ffwd.carbon.CarbonLineServer.java

License:Apache License

@Override
public ChannelInitializer<Channel> initializer() {
    return new ChannelInitializer<Channel>() {
        @Override/* w  w  w . jav  a 2 s.  c om*/
        protected void initChannel(final Channel ch) throws Exception {
            ch.pipeline().addLast(new LineBasedFrameDecoder(MAX_LINE));
            ch.pipeline().addLast(new StringDecoder(CharsetUtil.UTF_8));
            ch.pipeline().addLast(decoder, handler);
        }
    };
}

From source file:com.spotify.ffwd.debug.NettyDebugServer.java

License:Apache License

public AsyncFuture<Void> start() {
    final ResolvableFuture<Void> future = async.future();

    final ServerBootstrap s = new ServerBootstrap();

    s.channel(NioServerSocketChannel.class);
    s.group(boss, worker);//from   w ww .ja va  2 s  .  co  m

    s.childHandler(new ChannelInitializer<Channel>() {
        @Override
        protected void initChannel(final Channel ch) throws Exception {
            connected.add(ch);
            log.info("Connected {}", ch);

            ch.closeFuture().addListener(new ChannelFutureListener() {
                @Override
                public void operationComplete(ChannelFuture future) throws Exception {
                    connected.remove(ch);
                    log.info("Disconnected {}", ch);
                }
            });
        }
    });

    s.bind(localAddress).addListener(new ChannelFutureListener() {
        @Override
        public void operationComplete(ChannelFuture f) throws Exception {
            if (!f.isSuccess()) {
                future.fail(f.cause());
                return;
            }

            log.info("Bound to {}", localAddress);

            if (!server.compareAndSet(null, f.channel())) {
                f.channel().close();
                future.fail(new IllegalStateException("server already started"));
                return;
            }

            future.resolve(null);
        }
    });

    return future;
}

From source file:com.spotify.ffwd.http.HttpProtocolServer.java

License:Apache License

@Override
public final ChannelInitializer<Channel> initializer() {
    return new ChannelInitializer<Channel>() {
        @Override/*from  w  w  w  .  j a v  a2s.  c  o m*/
        protected void initChannel(Channel ch) throws Exception {
            final ChannelInboundHandlerAdapter exceptionHandler = new ChannelInboundHandlerAdapter() {
                @Override
                public void exceptionCaught(final ChannelHandlerContext ctx, final Throwable cause)
                        throws Exception {
                    if (cause instanceof HttpException) {
                        final HttpException e = (HttpException) cause;
                        sendResponse(ctx, e.getStatus());
                        return;
                    }

                    if (cause instanceof DecoderException) {
                        exceptionCaught(ctx, cause.getCause());
                        return;
                    }

                    log.error("error in pipeline: ", cause);
                    sendResponse(ctx, HttpResponseStatus.INTERNAL_SERVER_ERROR);
                }
            };
            ch.pipeline().addLast(new HttpRequestDecoder(), new HttpContentDecompressor(),
                    new HttpObjectAggregator(Integer.MAX_VALUE), decoder, exceptionHandler, handler);
            ch.pipeline().addLast(new HttpResponseEncoder());
        }
    };
}

From source file:com.spotify.ffwd.json.JsonFrameProtocolServer.java

License:Apache License

@Override
public final ChannelInitializer<Channel> initializer() {
    return new ChannelInitializer<Channel>() {
        @Override//from ww w  . j a v  a2 s .  com
        protected void initChannel(Channel ch) throws Exception {
            ch.pipeline().addLast(new DatagramPacketToByteBuf());
            ch.pipeline().addLast(decoder, handler);
        }
    };
}

From source file:com.spotify.ffwd.json.JsonLineProtocolServer.java

License:Apache License

@Override
public final ChannelInitializer<Channel> initializer() {
    return new ChannelInitializer<Channel>() {
        @Override/*from w  w w. j  av  a 2 s . co m*/
        protected void initChannel(Channel ch) throws Exception {
            ch.pipeline().addLast(new LineBasedFrameDecoder(MAX_LINE));
            ch.pipeline().addLast(decoder, handler);
        }
    };
}

From source file:com.spotify.ffwd.protobuf.ProtobufFrameProtocolServer.java

License:Apache License

@Override
public final ChannelInitializer<Channel> initializer() {
    return new ChannelInitializer<Channel>() {
        @Override/*from  w  w  w.  j  a  v  a 2  s .c o m*/
        protected void initChannel(Channel ch) throws Exception {
            ch.pipeline().addLast(new DatagramPacketToByteBuf(), decoder, handler);
        }
    };
}

From source file:com.spotify.ffwd.protobuf.ProtobufLengthPrefixedProtocolServer.java

License:Apache License

@Override
public final ChannelInitializer<Channel> initializer() {
    return new ChannelInitializer<Channel>() {
        @Override/*ww w  .  j  a  v a2  s  .  co m*/
        protected void initChannel(Channel ch) throws Exception {
            ch.pipeline().addLast(new LengthFieldBasedFrameDecoder(MAX_LENGTH, 0, 4), decoder, handler);
        }
    };
}