Example usage for io.netty.channel Channel flush

Introduction

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

Prototype

@Override
    Channel flush();

Source Link

Usage

From source file:bftsmart.communication.client.netty.NettyClientServerCommunicationSystemServerSide.java

License:Apache License

private void closeChannelAndEventLoop(Channel c) {
    c.flush();
    c.deregister();
    c.close();
    c.eventLoop().shutdownGracefully();
}

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From source file:ccwihr.client.t1.HttpUploadClient.java

License:Apache License

/**
 * Standard post without multipart but already support on Factory (memory
 * management)/*w w  w  .ja  v a 2 s . c om*/
 * @param se12 
 *
 * @return the list of HttpData object (attribute and file) to be reused on
 *         next post
 */
private static List<InterfaceHttpData> formpost(Bootstrap bootstrap, String host, int port, URI uriSimple,
        SyncEntity se12, HttpDataFactory factory, List<Entry<String, String>> headers) throws Exception {
    // XXX /formpost
    // Start the connection attempt.
    ChannelFuture future = bootstrap.connect(new InetSocketAddress(host, port));
    // Wait until the connection attempt succeeds or fails.
    Channel channel = future.sync().channel();

    // Prepare the HTTP request.
    HttpRequest request = new DefaultHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.POST,
            uriSimple.toASCIIString());

    // Use the PostBody encoder
    HttpPostRequestEncoder bodyRequestEncoder = new HttpPostRequestEncoder(factory, request, false); // false

    // it is legal to add directly header or cookie into the request until
    // finalize
    for (Entry<String, String> entry : headers) {
        request.headers().set(entry.getKey(), entry.getValue());
    }

    // add Form attribute
    bodyRequestEncoder.addBodyAttribute("getform", "POST");
    bodyRequestEncoder.addBodyAttribute("info", "first value");
    bodyRequestEncoder.addBodyAttribute("secondinfo", "secondvalue &");
    bodyRequestEncoder.addBodyAttribute("thirdinfo", textArea);
    bodyRequestEncoder.addBodyAttribute("fourthinfo", textAreaLong);
    // bodyRequestEncoder.addBodyFileUpload("myfile", file,
    // "application/x-zip-compressed", false);

    // finalize request
    request = bodyRequestEncoder.finalizeRequest();

    // Create the bodylist to be reused on the last version with Multipart
    // support
    List<InterfaceHttpData> bodylist = bodyRequestEncoder.getBodyListAttributes();

    // send request
    channel.write(request);

    // test if request was chunked and if so, finish the write
    if (bodyRequestEncoder.isChunked()) { // could do either
        // request.isChunked()
        // either do it through ChunkedWriteHandler
        channel.write(bodyRequestEncoder);
    }
    channel.flush();

    // Do not clear here since we will reuse the InterfaceHttpData on the
    // next request
    // for the example (limit action on client side). Take this as a
    // broadcast of the same
    // request on both Post actions.
    //
    // On standard program, it is clearly recommended to clean all files
    // after each request
    // bodyRequestEncoder.cleanFiles();

    // Wait for the server to close the connection.
    channel.closeFuture().sync();
    return bodylist;
}

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From source file:cn.wcl.test.netty.HttpUploadClient.java

License:Apache License

/**
 * Standard post without multipart but already support on Factory (memory management)
 *
 * @return the list of HttpData object (attribute and file) to be reused on next post
 *///from  w w  w.  j  a  v a  2s .  co  m
private static List<InterfaceHttpData> formpost(Bootstrap bootstrap, String host, int port, URI uriSimple,
        File file, HttpDataFactory factory, List<Entry<String, String>> headers) throws Exception {
    // XXX /formpost
    // Start the connection attempt.
    ChannelFuture future = bootstrap.connect(new InetSocketAddress(host, port));
    // Wait until the connection attempt succeeds or fails.
    Channel channel = future.sync().channel();

    // Prepare the HTTP request.
    HttpRequest request = new DefaultHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.POST,
            uriSimple.toASCIIString());

    // Use the PostBody encoder
    HttpPostRequestEncoder bodyRequestEncoder = new HttpPostRequestEncoder(factory, request, false); // false => not multipart

    // it is legal to add directly header or cookie into the request until finalize
    for (Entry<String, String> entry : headers) {
        request.headers().set(entry.getKey(), entry.getValue());
    }

    // add Form attribute
    bodyRequestEncoder.addBodyAttribute("getform", "POST");
    bodyRequestEncoder.addBodyAttribute("info", "first value");
    bodyRequestEncoder.addBodyAttribute("secondinfo", "secondvalue &");
    bodyRequestEncoder.addBodyAttribute("thirdinfo", textArea);
    bodyRequestEncoder.addBodyAttribute("fourthinfo", textAreaLong);
    bodyRequestEncoder.addBodyFileUpload("myfile", file, "application/x-zip-compressed", false);

    // finalize request
    request = bodyRequestEncoder.finalizeRequest();

    // Create the bodylist to be reused on the last version with Multipart support
    List<InterfaceHttpData> bodylist = bodyRequestEncoder.getBodyListAttributes();

    // send request
    channel.write(request);

    // test if request was chunked and if so, finish the write
    if (bodyRequestEncoder.isChunked()) { // could do either request.isChunked()
        // either do it through ChunkedWriteHandler
        channel.write(bodyRequestEncoder);
    }
    channel.flush();

    // Do not clear here since we will reuse the InterfaceHttpData on the next request
    // for the example (limit action on client side). Take this as a broadcast of the same
    // request on both Post actions.
    //
    // On standard program, it is clearly recommended to clean all files after each request
    // bodyRequestEncoder.cleanFiles();

    // Wait for the server to close the connection.
    channel.closeFuture().sync();
    return bodylist;
}

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From source file:cn.wcl.test.netty.HttpUploadClient.java

License:Apache License

/**
 * Multipart example//from w w  w .ja va 2s. c  om
 */
private static void formpostmultipart(Bootstrap bootstrap, String host, int port, URI uriFile,
        HttpDataFactory factory, Iterable<Entry<String, String>> headers, List<InterfaceHttpData> bodylist)
        throws Exception {
    // XXX /formpostmultipart
    // Start the connection attempt.
    ChannelFuture future = bootstrap.connect(new InetSocketAddress(host, port));
    // Wait until the connection attempt succeeds or fails.
    Channel channel = future.sync().channel();

    // Prepare the HTTP request.
    HttpRequest request = new DefaultHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.POST,
            uriFile.toASCIIString());

    // Use the PostBody encoder
    HttpPostRequestEncoder bodyRequestEncoder = new HttpPostRequestEncoder(factory, request, true); // true => multipart

    // it is legal to add directly header or cookie into the request until finalize
    for (Entry<String, String> entry : headers) {
        request.headers().set(entry.getKey(), entry.getValue());
    }

    // add Form attribute from previous request in formpost()
    bodyRequestEncoder.setBodyHttpDatas(bodylist);

    // finalize request
    bodyRequestEncoder.finalizeRequest();

    // send request
    channel.write(request);

    // test if request was chunked and if so, finish the write
    if (bodyRequestEncoder.isChunked()) {
        channel.write(bodyRequestEncoder);
    }
    channel.flush();

    // Now no more use of file representation (and list of HttpData)
    bodyRequestEncoder.cleanFiles();

    // Wait for the server to close the connection.
    channel.closeFuture().sync();
}

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From source file:com.cmz.http.upload.HttpUploadClient.java

License:Apache License

/**
 * Standard post without multipart but already support on Factory (memory management)
 *
 * @return the list of HttpData object (attribute and file) to be reused on next post
 *//*from   w  w  w.ja  va 2s .co  m*/
private static List<InterfaceHttpData> formpost(Bootstrap bootstrap, String host, int port, URI uriSimple,
        File file, HttpDataFactory factory, List<Entry<String, String>> headers) throws Exception {
    // XXX /formpost
    // Start the connection attempt.
    ChannelFuture future = bootstrap.connect(SocketUtils.socketAddress(host, port));
    // Wait until the connection attempt succeeds or fails.
    Channel channel = future.sync().channel();

    // Prepare the HTTP request.
    HttpRequest request = new DefaultHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.POST,
            uriSimple.toASCIIString());

    // Use the PostBody encoder
    HttpPostRequestEncoder bodyRequestEncoder = new HttpPostRequestEncoder(factory, request, false); // false => not multipart

    // it is legal to add directly header or cookie into the request until finalize
    for (Entry<String, String> entry : headers) {
        request.headers().set(entry.getKey(), entry.getValue());
    }

    // add Form attribute
    bodyRequestEncoder.addBodyAttribute("getform", "POST");
    bodyRequestEncoder.addBodyAttribute("info", "first value");
    bodyRequestEncoder.addBodyAttribute("secondinfo", "secondvalue &");
    bodyRequestEncoder.addBodyAttribute("thirdinfo", textArea);
    bodyRequestEncoder.addBodyAttribute("fourthinfo", textAreaLong);
    bodyRequestEncoder.addBodyFileUpload("myfile", file, "application/x-zip-compressed", false);

    // finalize request
    request = bodyRequestEncoder.finalizeRequest();

    // Create the bodylist to be reused on the last version with Multipart support
    List<InterfaceHttpData> bodylist = bodyRequestEncoder.getBodyListAttributes();

    // send request
    channel.write(request);

    // test if request was chunked and if so, finish the write
    if (bodyRequestEncoder.isChunked()) { // could do either request.isChunked()
        // either do it through ChunkedWriteHandler
        channel.write(bodyRequestEncoder);
    }
    channel.flush();

    // Do not clear here since we will reuse the InterfaceHttpData on the next request
    // for the example (limit action on client side). Take this as a broadcast of the same
    // request on both Post actions.
    //
    // On standard program, it is clearly recommended to clean all files after each request
    // bodyRequestEncoder.cleanFiles();

    // Wait for the server to close the connection.
    channel.closeFuture().sync();
    return bodylist;
}

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From source file:com.cmz.http.upload.HttpUploadClient.java

License:Apache License

/**
 * Multipart example/*w  w w  . j a  v  a 2 s  .  c  om*/
 */
private static void formpostmultipart(Bootstrap bootstrap, String host, int port, URI uriFile,
        HttpDataFactory factory, Iterable<Entry<String, String>> headers, List<InterfaceHttpData> bodylist)
        throws Exception {
    // XXX /formpostmultipart
    // Start the connection attempt.
    ChannelFuture future = bootstrap.connect(SocketUtils.socketAddress(host, port));
    // Wait until the connection attempt succeeds or fails.
    Channel channel = future.sync().channel();

    // Prepare the HTTP request.
    HttpRequest request = new DefaultHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.POST,
            uriFile.toASCIIString());

    // Use the PostBody encoder
    HttpPostRequestEncoder bodyRequestEncoder = new HttpPostRequestEncoder(factory, request, true); // true => multipart

    // it is legal to add directly header or cookie into the request until finalize
    for (Entry<String, String> entry : headers) {
        request.headers().set(entry.getKey(), entry.getValue());
    }

    // add Form attribute from previous request in formpost()
    bodyRequestEncoder.setBodyHttpDatas(bodylist);

    // finalize request
    bodyRequestEncoder.finalizeRequest();

    // send request
    channel.write(request);

    // test if request was chunked and if so, finish the write
    if (bodyRequestEncoder.isChunked()) {
        channel.write(bodyRequestEncoder);
    }
    channel.flush();

    // Now no more use of file representation (and list of HttpData)
    bodyRequestEncoder.cleanFiles();

    // Wait for the server to close the connection.
    channel.closeFuture().sync();
}

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From source file:com.digitalpetri.opcua.stack.client.UaTcpStackClient.java

License:Apache License

@SuppressWarnings("unchecked")
private void sendRequests(List<? extends UaRequestMessage> requests,
        List<CompletableFuture<? extends UaResponseMessage>> futures, ClientSecureChannel sc) {
    Channel channel = sc.getChannel();
    Iterator<? extends UaRequestMessage> requestIterator = requests.iterator();
    Iterator<CompletableFuture<? extends UaResponseMessage>> futureIterator = futures.iterator();

    List<UaRequestFuture> pendingRequests = new ArrayList<>(requests.size());

    while (requestIterator.hasNext() && futureIterator.hasNext()) {
        UaRequestMessage request = requestIterator.next();
        CompletableFuture<UaResponseMessage> future = (CompletableFuture<UaResponseMessage>) futureIterator
                .next();/*from www .  j a  va 2s .  c o m*/

        UaRequestFuture pendingRequest = new UaRequestFuture(request, future);
        pendingRequests.add(pendingRequest);

        RequestHeader requestHeader = request.getRequestHeader();

        pending.put(requestHeader.getRequestHandle(), future);

        scheduleRequestTimeout(requestHeader);

        pendingRequest.getFuture().thenAccept(this::receiveResponse);
    }

    channel.eventLoop().execute(() -> {
        for (UaRequestFuture pendingRequest : pendingRequests) {
            channel.write(pendingRequest).addListener(f -> {
                if (!f.isSuccess()) {
                    UInteger requestHandle = pendingRequest.getRequest().getRequestHeader().getRequestHandle();

                    CompletableFuture<?> future = pending.remove(requestHandle);
                    if (future != null)
                        future.completeExceptionally(f.cause());

                    logger.debug("Write failed, requestHandle={}", requestHandle, f.cause());
                }
            });
        }

        channel.flush();
    });
}

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From source file:com.digitalpetri.opcua.stack.server.tcp.UaTcpStackServer.java

License:Apache License

public void secureChannelIssuedOrRenewed(ServerSecureChannel secureChannel, long lifetimeMillis) {
    long channelId = secureChannel.getChannelId();

    /*/*from  w w w . j  a  v  a  2s  .  co m*/
     * Cancel any existing timeouts and start a new one.
     */
    Timeout timeout = timeouts.remove(channelId);
    boolean cancelled = (timeout == null || timeout.cancel());

    if (cancelled) {
        timeout = wheelTimer.newTimeout(t -> closeSecureChannel(secureChannel), lifetimeMillis,
                TimeUnit.MILLISECONDS);

        timeouts.put(channelId, timeout);

        /*
         * If this is a reconnect there might be responses queued, so drain those.
         */
        Channel channel = secureChannel.attr(BoundChannelKey).get();

        if (channel != null) {
            List<ServiceResponse> responses = responseQueues.removeAll(channelId);

            responses.forEach(channel::write);
            channel.flush();
        }
    }
}

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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  .j  a  v a 2  s.c om*/
        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.hzmsc.scada.Jmtis.server.HttpHelloWorldServerHandler.java

License:Apache License

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) {
    if (msg instanceof HttpRequest) {
        HttpRequest req = (HttpRequest) msg;
        System.out.println(req);/*from   www. j a v  a 2  s  .c  o m*/

        if (HttpUtil.is100ContinueExpected(req)) {
            ctx.write(new DefaultFullHttpResponse(HTTP_1_1, CONTINUE));
        }
        boolean keepAlive = HttpUtil.isKeepAlive(req);
        FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, OK, Unpooled.wrappedBuffer(CONTENT));
        response.headers().set(CONTENT_TYPE, "text/plain");
        response.headers().setInt(CONTENT_LENGTH, response.content().readableBytes());

        if (!keepAlive) {
            ctx.write(response).addListener(ChannelFutureListener.CLOSE);
        } else {
            response.headers().set(CONNECTION, KEEP_ALIVE);
            ctx.write(response);
        }
    }
    if (msg instanceof HttpContent) {
        HttpContent content = (HttpContent) msg;
        ByteBuf buf = content.content();
        System.out.println(buf.toString(io.netty.util.CharsetUtil.UTF_8));
        buf.release();
        System.out.println(ChannelMap.channelMap);
        Channel channel = ChannelMap.channelMap.get("null0");
        if (channel != null) {

            System.out.println(channel.id().asLongText());
            JmtisMsg jmtisMsg = new JmtisMsg("clientCompany", (short) 1, (short) 1, (short) 1, (short) 1,
                    new int[] { 1, 2, 3, 4, 5 });
            //System.out.println(jmtisMsg);
            System.out.println(ctx.channel().id().asLongText());
            channel.writeAndFlush(jmtisMsg);
            channel.write(jmtisMsg);
            channel.flush();
        } else {
            System.out.println("there is no active channel.......");
        }
        //JmtisMsg jmtisMsg = new JmtisMsg("clientCompany", (short)1, (short)1, (short)1, (short)1, new int[]{1, 2, 3, 4, 5});
        //System.out.println(jmtisMsg);
        //channel.write(jmtisMsg);

    }
}

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