Example usage for io.netty.channel ChannelHandlerContext pipeline

Introduction

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

Prototype

ChannelPipeline pipeline();

Source Link

Document

Return the assigned ChannelPipeline

Usage

From source file:io.netty.example.http.file.HttpStaticFileServerHandler.java

License:Apache License

@Override
public void channelRead0(ChannelHandlerContext ctx, FullHttpRequest request) throws Exception {
    this.request = request;
    if (!request.decoderResult().isSuccess()) {
        sendError(ctx, BAD_REQUEST);/* w w w.ja v  a2s.  com*/
        return;
    }

    if (!GET.equals(request.method())) {
        this.sendError(ctx, METHOD_NOT_ALLOWED);
        return;
    }

    final boolean keepAlive = HttpUtil.isKeepAlive(request);
    final String uri = request.uri();
    final String path = sanitizeUri(uri);
    if (path == null) {
        this.sendError(ctx, FORBIDDEN);
        return;
    }

    File file = new File(path);
    if (file.isHidden() || !file.exists()) {
        this.sendError(ctx, NOT_FOUND);
        return;
    }

    if (file.isDirectory()) {
        if (uri.endsWith("/")) {
            this.sendListing(ctx, file, uri);
        } else {
            this.sendRedirect(ctx, uri + '/');
        }
        return;
    }

    if (!file.isFile()) {
        sendError(ctx, FORBIDDEN);
        return;
    }

    // Cache Validation
    String ifModifiedSince = request.headers().get(HttpHeaderNames.IF_MODIFIED_SINCE);
    if (ifModifiedSince != null && !ifModifiedSince.isEmpty()) {
        SimpleDateFormat dateFormatter = new SimpleDateFormat(HTTP_DATE_FORMAT, Locale.US);
        Date ifModifiedSinceDate = dateFormatter.parse(ifModifiedSince);

        // Only compare up to the second because the datetime format we send to the client
        // does not have milliseconds
        long ifModifiedSinceDateSeconds = ifModifiedSinceDate.getTime() / 1000;
        long fileLastModifiedSeconds = file.lastModified() / 1000;
        if (ifModifiedSinceDateSeconds == fileLastModifiedSeconds) {
            this.sendNotModified(ctx);
            return;
        }
    }

    RandomAccessFile raf;
    try {
        raf = new RandomAccessFile(file, "r");
    } catch (FileNotFoundException ignore) {
        sendError(ctx, NOT_FOUND);
        return;
    }
    long fileLength = raf.length();

    HttpResponse response = new DefaultHttpResponse(HTTP_1_1, OK);
    HttpUtil.setContentLength(response, fileLength);
    setContentTypeHeader(response, file);
    setDateAndCacheHeaders(response, file);

    if (!keepAlive) {
        response.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.CLOSE);
    } else if (request.protocolVersion().equals(HTTP_1_0)) {
        response.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.KEEP_ALIVE);
    }

    // Write the initial line and the header.
    ctx.write(response);

    // Write the content.
    ChannelFuture sendFileFuture;
    ChannelFuture lastContentFuture;
    if (ctx.pipeline().get(SslHandler.class) == null) {
        sendFileFuture = ctx.write(new DefaultFileRegion(raf.getChannel(), 0, fileLength),
                ctx.newProgressivePromise());
        // Write the end marker.
        lastContentFuture = ctx.writeAndFlush(LastHttpContent.EMPTY_LAST_CONTENT);
    } else {
        sendFileFuture = ctx.writeAndFlush(new HttpChunkedInput(new ChunkedFile(raf, 0, fileLength, 8192)),
                ctx.newProgressivePromise());
        // HttpChunkedInput will write the end marker (LastHttpContent) for us.
        lastContentFuture = sendFileFuture;
    }

    sendFileFuture.addListener(new ChannelProgressiveFutureListener() {
        @Override
        public void operationProgressed(ChannelProgressiveFuture future, long progress, long total) {
            if (total < 0) { // total unknown
                System.err.println(future.channel() + " Transfer progress: " + progress);
            } else {
                System.err.println(future.channel() + " Transfer progress: " + progress + " / " + total);
            }
        }

        @Override
        public void operationComplete(ChannelProgressiveFuture future) {
            System.err.println(future.channel() + " Transfer complete.");
        }
    });

    // Decide whether to close the connection or not.
    if (!keepAlive) {
        // Close the connection when the whole content is written out.
        lastContentFuture.addListener(ChannelFutureListener.CLOSE);
    }
}

---

From source file:io.netty.example.http.websocketx.server.WebSocketIndexPageHandler.java

License:Apache License

@Override
protected void channelRead0(ChannelHandlerContext ctx, FullHttpRequest req) throws Exception {
    // Handle a bad request.
    if (!req.decoderResult().isSuccess()) {
        sendHttpResponse(ctx, req,/*from   w  w  w .ja v a  2 s.  c  om*/
                new DefaultFullHttpResponse(req.protocolVersion(), BAD_REQUEST, ctx.alloc().buffer(0)));
        return;
    }

    // Allow only GET methods.
    if (!GET.equals(req.method())) {
        sendHttpResponse(ctx, req,
                new DefaultFullHttpResponse(req.protocolVersion(), FORBIDDEN, ctx.alloc().buffer(0)));
        return;
    }

    // Send the index page
    if ("/".equals(req.uri()) || "/index.html".equals(req.uri())) {
        String webSocketLocation = getWebSocketLocation(ctx.pipeline(), req, websocketPath);
        ByteBuf content = WebSocketServerIndexPage.getContent(webSocketLocation);
        FullHttpResponse res = new DefaultFullHttpResponse(req.protocolVersion(), OK, content);

        res.headers().set(CONTENT_TYPE, "text/html; charset=UTF-8");
        HttpUtil.setContentLength(res, content.readableBytes());

        sendHttpResponse(ctx, req, res);
    } else {
        sendHttpResponse(ctx, req,
                new DefaultFullHttpResponse(req.protocolVersion(), NOT_FOUND, ctx.alloc().buffer(0)));
    }
}

---

From source file:io.netty.example.http2.helloworld.client.Http2ClientInitializer.java

License:Apache License

/**
 * Configure the pipeline for TLS NPN negotiation to HTTP/2.
 */// ww w  . j  a  v  a  2 s .co  m
private void configureSsl(SocketChannel ch) {
    ChannelPipeline pipeline = ch.pipeline();
    // Specify Host in SSLContext New Handler to add TLS SNI Extension
    pipeline.addLast(sslCtx.newHandler(ch.alloc(), Http2Client.HOST, Http2Client.PORT));
    // We must wait for the handshake to finish and the protocol to be negotiated before configuring
    // the HTTP/2 components of the pipeline.
    pipeline.addLast(new ApplicationProtocolNegotiationHandler("") {
        @Override
        protected void configurePipeline(ChannelHandlerContext ctx, String protocol) {
            if (ApplicationProtocolNames.HTTP_2.equals(protocol)) {
                ChannelPipeline p = ctx.pipeline();
                p.addLast(connectionHandler);
                configureEndOfPipeline(p);
                return;
            }
            ctx.close();
            throw new IllegalStateException("unknown protocol: " + protocol);
        }
    });
}

---

From source file:io.netty.example.http2.helloworld.frame.server.Http2ServerInitializer.java

License:Apache License

/**
 * Configure the pipeline for a cleartext upgrade from HTTP to HTTP/2.0
 *//*from w w w .  j av  a2  s.  com*/
private void configureClearText(SocketChannel ch) {
    final ChannelPipeline p = ch.pipeline();
    final HttpServerCodec sourceCodec = new HttpServerCodec();

    p.addLast(sourceCodec);
    p.addLast(new HttpServerUpgradeHandler(sourceCodec, upgradeCodecFactory));
    p.addLast(new SimpleChannelInboundHandler<HttpMessage>() {
        @Override
        protected void channelRead0(ChannelHandlerContext ctx, HttpMessage msg) throws Exception {
            // If this handler is hit then no upgrade has been attempted and the client is just talking HTTP.
            System.err.println("Directly talking: " + msg.protocolVersion() + " (no upgrade was attempted)");
            ChannelPipeline pipeline = ctx.pipeline();
            pipeline.addAfter(ctx.name(), null, new HelloWorldHttp1Handler("Direct. No Upgrade Attempted."));
            pipeline.replace(this, null, new HttpObjectAggregator(maxHttpContentLength));
            ctx.fireChannelRead(ReferenceCountUtil.retain(msg));
        }
    });

    p.addLast(new UserEventLogger());
}

---

From source file:io.netty.example.http2.helloworld.multiplex.server.Http2OrHttpHandler.java

License:Apache License

@Override
protected void configurePipeline(ChannelHandlerContext ctx, String protocol) throws Exception {
    if (ApplicationProtocolNames.HTTP_2.equals(protocol)) {
        ctx.pipeline().addLast(Http2FrameCodecBuilder.forServer().build());
        ctx.pipeline().addLast(new Http2MultiplexHandler(new HelloWorldHttp2Handler()));
        return;/*from  w  ww .j  av a2  s.  c om*/
    }

    if (ApplicationProtocolNames.HTTP_1_1.equals(protocol)) {
        ctx.pipeline().addLast(new HttpServerCodec(), new HttpObjectAggregator(MAX_CONTENT_LENGTH),
                new HelloWorldHttp1Handler("ALPN Negotiation"));
        return;
    }

    throw new IllegalStateException("unknown protocol: " + protocol);
}

---

From source file:io.netty.example.http2.helloworld.server.Http2ServerInitializer.java

License:Apache License

/**
 * Configure the pipeline for a cleartext upgrade from HTTP to HTTP/2.0
 *///from  www  .ja va  2  s  .co  m
private void configureClearText(SocketChannel ch) {
    final ChannelPipeline p = ch.pipeline();
    final HttpServerCodec sourceCodec = new HttpServerCodec();
    final HttpServerUpgradeHandler upgradeHandler = new HttpServerUpgradeHandler(sourceCodec,
            upgradeCodecFactory);
    final CleartextHttp2ServerUpgradeHandler cleartextHttp2ServerUpgradeHandler = new CleartextHttp2ServerUpgradeHandler(
            sourceCodec, upgradeHandler, new HelloWorldHttp2HandlerBuilder().build());

    p.addLast(cleartextHttp2ServerUpgradeHandler);
    p.addLast(new SimpleChannelInboundHandler<HttpMessage>() {
        @Override
        protected void channelRead0(ChannelHandlerContext ctx, HttpMessage msg) throws Exception {
            // If this handler is hit then no upgrade has been attempted and the client is just talking HTTP.
            System.err.println("Directly talking: " + msg.protocolVersion() + " (no upgrade was attempted)");
            ChannelPipeline pipeline = ctx.pipeline();
            pipeline.addAfter(ctx.name(), null, new HelloWorldHttp1Handler("Direct. No Upgrade Attempted."));
            pipeline.replace(this, null, new HttpObjectAggregator(maxHttpContentLength));
            ctx.fireChannelRead(ReferenceCountUtil.retain(msg));
        }
    });

    p.addLast(new UserEventLogger());
}

---

From source file:io.nodyn.tcp.AfterConnectEventHandler.java

License:Apache License

@Override
public void channelActive(ChannelHandlerContext ctx) throws Exception {
    ctx.pipeline().addAfter(ctx.name(), "emit.data", new DataEventHandler(this.process, this.tcp));
    emit("afterConnect", this.tcp);
    super.channelActive(ctx);
}

---

From source file:io.nodyn.tcp.ConnectionEventHandler.java

License:Apache License

@Override
public void channelActive(ChannelHandlerContext ctx) throws Exception {
    TCPWrap clientHandle = new TCPWrap(this.process, ctx.channel().newSucceededFuture());
    ctx.pipeline().addAfter(ctx.name(), "emit.close", new EOFEventHandler(this.process, clientHandle));
    ctx.pipeline().addAfter(ctx.name(), "emit.data", new DataEventHandler(this.process, clientHandle));
    emit("connection", clientHandle);
    super.channelActive(ctx);
}

---

From source file:io.reactiverse.pgclient.impl.codec.decoder.InitiateSslHandler.java

License:Apache License

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
    // This must be a single byte buffer - after that follow the SSL handshake
    ByteBuf byteBuf = (ByteBuf) msg;//w  ww.java 2 s .  c  om
    byte b = byteBuf.getByte(0);
    byteBuf.release();
    switch (b) {
    case MessageType.SSL_YES: {
        conn.socket().upgradeToSsl(v -> {
            ctx.pipeline().remove(this);
            upgradeFuture.complete();
        });
        break;
    }
    case MessageType.SSL_NO: {
        upgradeFuture.fail(new Exception("Postgres Server does not handle SSL connection"));
        break;
    }
    default:
        upgradeFuture.fail(new Exception("Invalid SSL connection message"));
        break;
    }
}

---

From source file:io.reactivesocket.netty.tcp.server.ReactiveSocketServerHandler.java

License:Apache License

@Override
public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
    ChannelPipeline cp = ctx.pipeline();
    if (cp.get(LengthFieldBasedFrameDecoder.class) == null) {
        ctx.pipeline().addBefore(ctx.name(), LengthFieldBasedFrameDecoder.class.getName(),
                new LengthFieldBasedFrameDecoder(Integer.MAX_VALUE >> 1, 0, BitUtil.SIZE_OF_INT,
                        -1 * BitUtil.SIZE_OF_INT, 0));
    }/*from ww w  . j a  v a  2  s  . c  o  m*/

}

---

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