Example usage for io.netty.handler.codec.http HttpHeaderNames ACCEPT

Introduction

In this page you can find the example usage for io.netty.handler.codec.http HttpHeaderNames ACCEPT_ENCODING.

Prototype

AsciiString ACCEPT_ENCODING

To view the source code for io.netty.handler.codec.http HttpHeaderNames ACCEPT_ENCODING.

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Document

"accept-encoding"

Usage

From source file:asset.pipeline.ratpack.internal.ProductionAssetHandler.java

License:Apache License

private boolean acceptsGzip(Context ctx) {
    String acceptsEncoding = ctx.getRequest().getHeaders().get(HttpHeaderNames.ACCEPT_ENCODING);
    return acceptsEncoding != null && Arrays.asList(acceptsEncoding.split(",")).contains("gzip");
}

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

License:Apache License

/**
 * Standard usage of HTTP API in Netty without file Upload (get is not able
 * to achieve File upload due to limitation on request size).
 *
 * @return the list of headers that will be used in every example after
 **//*w  ww .  j a  v a2s.  c  om*/
private static List<Entry<String, String>> formget(Bootstrap bootstrap, String host, int port, String get,
        URI uriSimple) throws Exception {
    // XXX /formget
    // No use of HttpPostRequestEncoder since not a POST
    Channel channel = bootstrap.connect(host, port).sync().channel();

    // Prepare the HTTP request.
    QueryStringEncoder encoder = new QueryStringEncoder(get);
    // add Form attribute
    encoder.addParam("getform", "GET");
    encoder.addParam("info", "first value");
    encoder.addParam("secondinfo", "secondvalue &");
    // not the big one since it is not compatible with GET size
    // encoder.addParam("thirdinfo", textArea);
    encoder.addParam("thirdinfo", "third value\r\ntest second line\r\n\r\nnew line\r\n");
    encoder.addParam("Send", "Send");

    URI uriGet = new URI(encoder.toString());
    HttpRequest request = new DefaultHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.GET, uriGet.toASCIIString());
    HttpHeaders headers = request.headers();
    headers.set(HttpHeaderNames.HOST, host);
    headers.set(HttpHeaderNames.CONNECTION, HttpHeaderValues.CLOSE);
    headers.set(HttpHeaderNames.ACCEPT_ENCODING, HttpHeaderValues.GZIP + "," + HttpHeaderValues.DEFLATE);

    headers.set(HttpHeaderNames.ACCEPT_CHARSET, "ISO-8859-1,utf-8;q=0.7,*;q=0.7");
    headers.set(HttpHeaderNames.ACCEPT_LANGUAGE, "fr");
    headers.set(HttpHeaderNames.REFERER, uriSimple.toString());
    headers.set(HttpHeaderNames.USER_AGENT, "Netty Simple Http Client side");
    headers.set(HttpHeaderNames.ACCEPT, "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");

    // connection will not close but needed
    // headers.set("Connection","keep-alive");
    // headers.set("Keep-Alive","300");

    headers.set(HttpHeaderNames.COOKIE, ClientCookieEncoder.STRICT.encode(new DefaultCookie("my-cookie", "foo"),
            new DefaultCookie("another-cookie", "bar")));

    // send request
    channel.writeAndFlush(request);

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

    // convert headers to list
    return headers.entries();
}

From source file:ccwihr.client.t2.Http2Client.java

License:Apache License

public static void main(String[] args) throws Exception {
    //        // Configure SSL.
    //        final SslContext sslCtx;
    //        if (SSL) {
    //            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;
    //        }//from w w w  . j a  v  a  2s . co  m

    EventLoopGroup workerGroup = new NioEventLoopGroup();
    //        Http2ClientInitializer initializer = new Http2ClientInitializer(sslCtx, Integer.MAX_VALUE);
    Http2ClientInitializer initializer = new Http2ClientInitializer(null, 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.writeAndFlush(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,
                    Unpooled.copiedBuffer(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.writeAndFlush(request), channel.newPromise());
            streamId += 2;
        }
        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();
    }
}

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

License:Apache License

/**
 * Standard usage of HTTP API in Netty without file Upload (get is not able to achieve File upload
 * due to limitation on request size)./*w w w  . j  a  va  2 s. c  om*/
 *
 * @return the list of headers that will be used in every example after
 **/
private static List<Entry<String, String>> formget(Bootstrap bootstrap, String host, int port, String get,
        URI uriSimple) throws Exception {
    // XXX /formget
    // No use of HttpPostRequestEncoder since not a POST
    Channel channel = bootstrap.connect(host, port).sync().channel();

    // Prepare the HTTP request.
    QueryStringEncoder encoder = new QueryStringEncoder(get);
    // add Form attribute
    encoder.addParam("getform", "GET");
    encoder.addParam("info", "first value");
    encoder.addParam("secondinfo", "secondvalue &");
    // not the big one since it is not compatible with GET size
    // encoder.addParam("thirdinfo", textArea);
    encoder.addParam("thirdinfo", "third value\r\ntest second line\r\n\r\nnew line\r\n");
    encoder.addParam("Send", "Send");

    URI uriGet = new URI(encoder.toString());
    HttpRequest request = new DefaultHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.GET, uriGet.toASCIIString());
    HttpHeaders headers = request.headers();
    headers.set(HttpHeaderNames.HOST, host);
    headers.set(HttpHeaderNames.CONNECTION, HttpHeaderValues.CLOSE);
    headers.set(HttpHeaderNames.ACCEPT_ENCODING, HttpHeaderValues.GZIP + "," + HttpHeaderValues.DEFLATE);

    headers.set(HttpHeaderNames.ACCEPT_CHARSET, "ISO-8859-1,utf-8;q=0.7,*;q=0.7");
    headers.set(HttpHeaderNames.ACCEPT_LANGUAGE, "fr");
    headers.set(HttpHeaderNames.REFERER, uriSimple.toString());
    headers.set(HttpHeaderNames.USER_AGENT, "Netty Simple Http Client side");
    headers.set(HttpHeaderNames.ACCEPT, "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");

    //connection will not close but needed
    // headers.set("Connection","keep-alive");
    // headers.set("Keep-Alive","300");

    headers.set(HttpHeaderNames.COOKIE, ClientCookieEncoder.STRICT.encode(new DefaultCookie("my-cookie", "foo"),
            new DefaultCookie("another-cookie", "bar")));

    // send request
    channel.writeAndFlush(request);

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

    // convert headers to list
    return headers.entries();
}

From source file:com.cmz.http.snoop.HttpSnoopClient.java

License:Apache License

public static void main(String[] args) throws Exception {
    URI uri = new URI(URL);
    String scheme = uri.getScheme() == null ? "http" : uri.getScheme();
    String host = uri.getHost() == null ? "127.0.0.1" : uri.getHost();
    int port = uri.getPort();
    if (port == -1) {
        if ("http".equalsIgnoreCase(scheme)) {
            port = 80;/*from ww  w .  j a  v  a2  s.c o m*/
        } else if ("https".equalsIgnoreCase(scheme)) {
            port = 443;
        }
    }

    if (!"http".equalsIgnoreCase(scheme) && !"https".equalsIgnoreCase(scheme)) {
        System.err.println("Only HTTP(S) is supported.");
        return;
    }

    // Configure SSL context if necessary.
    final boolean ssl = "https".equalsIgnoreCase(scheme);
    final SslContext sslCtx;
    if (ssl) {
        sslCtx = SslContextBuilder.forClient().trustManager(InsecureTrustManagerFactory.INSTANCE).build();
    } else {
        sslCtx = null;
    }

    // Configure the client.
    EventLoopGroup group = new NioEventLoopGroup();
    try {
        Bootstrap b = new Bootstrap();
        b.group(group).channel(NioSocketChannel.class).handler(new HttpSnoopClientInitializer(sslCtx));

        // Make the connection attempt.
        Channel ch = b.connect(host, port).sync().channel();

        // Prepare the HTTP request.
        HttpRequest request = new DefaultFullHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.GET,
                uri.getRawPath());
        request.headers().set(HttpHeaderNames.HOST, host);
        request.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.CLOSE);
        request.headers().set(HttpHeaderNames.ACCEPT_ENCODING, HttpHeaderValues.GZIP);

        // Set some example cookies.
        request.headers().set(HttpHeaderNames.COOKIE, ClientCookieEncoder.STRICT
                .encode(new DefaultCookie("my-cookie", "foo"), new DefaultCookie("another-cookie", "bar")));

        // Send the HTTP request.
        ch.writeAndFlush(request);

        // Wait for the server to close the connection.
        ch.closeFuture().sync();
    } finally {
        // Shut down executor threads to exit.
        group.shutdownGracefully();
    }
}

From source file:com.dwarf.netty.guide.http.snoop.HttpSnoopClient.java

License:Apache License

public static void main(String[] args) throws Exception {
    URI uri = new URI(URL);
    String scheme = uri.getScheme() == null ? "http" : uri.getScheme();
    String host = uri.getHost() == null ? "127.0.0.1" : uri.getHost();
    int port = uri.getPort();
    if (port == -1) {
        if ("http".equalsIgnoreCase(scheme)) {
            port = 80;/*from  w w  w . ja  v  a  2 s.c  o m*/
        } else if ("https".equalsIgnoreCase(scheme)) {
            port = 443;
        }
    }

    if (!"http".equalsIgnoreCase(scheme) && !"https".equalsIgnoreCase(scheme)) {
        System.err.println("Only HTTP(S) is supported.");
        return;
    }

    // Configure SSL context if necessary.
    final boolean ssl = "https".equalsIgnoreCase(scheme);
    final SslContext sslCtx;
    if (ssl) {
        sslCtx = SslContext.newClientContext(InsecureTrustManagerFactory.INSTANCE);
    } else {
        sslCtx = null;
    }

    // Configure the client.
    EventLoopGroup group = new NioEventLoopGroup();
    try {
        Bootstrap b = new Bootstrap();
        b.group(group).channel(NioSocketChannel.class).handler(new HttpSnoopClientInitializer(sslCtx));

        // Make the connection attempt.
        Channel ch = b.connect(host, port).sync().channel();

        // Prepare the HTTP request.
        HttpRequest request = new DefaultFullHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.GET,
                uri.getRawPath());
        request.headers().set(HttpHeaderNames.HOST, host);
        request.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.CLOSE);
        request.headers().set(HttpHeaderNames.ACCEPT_ENCODING, HttpHeaderValues.GZIP);

        // Set some example cookies.
        request.headers().set(HttpHeaderNames.COOKIE, ClientCookieEncoder
                .encode(new DefaultCookie("my-cookie", "foo"), new DefaultCookie("another-cookie", "bar")));

        // Send the HTTP request.
        ch.writeAndFlush(request);

        // Wait for the server to close the connection.
        ch.closeFuture().sync();
    } finally {
        // Shut down executor threads to exit.
        group.shutdownGracefully();
    }
}

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) {/*ww w .j  av  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();
    }
}

From source file:com.flysoloing.learning.network.netty.spdy.client.SpdyClient.java

License:Apache License

public static void main(String[] args) throws Exception {
    // Configure SSL.
    final SslContext sslCtx = SslContextBuilder.forClient().trustManager(InsecureTrustManagerFactory.INSTANCE)
            .applicationProtocolConfig(new ApplicationProtocolConfig(Protocol.NPN,
                    // 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.SPDY_3_1,
                    ApplicationProtocolNames.HTTP_1_1))
            .build();//www. ja v a2  s .  c  o  m

    HttpResponseClientHandler httpResponseHandler = new HttpResponseClientHandler();
    EventLoopGroup workerGroup = new NioEventLoopGroup();

    try {
        Bootstrap b = new Bootstrap();
        b.group(workerGroup);
        b.channel(NioSocketChannel.class);
        b.option(ChannelOption.SO_KEEPALIVE, true);
        b.remoteAddress(HOST, PORT);
        b.handler(new SpdyClientInitializer(sslCtx, httpResponseHandler));

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

        // Create a GET request.
        HttpRequest request = new DefaultFullHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.GET, "");
        request.headers().set(HttpHeaderNames.HOST, HOST);
        request.headers().set(HttpHeaderNames.ACCEPT_ENCODING, HttpHeaderValues.GZIP);

        // Send the GET request.
        channel.writeAndFlush(request).sync();

        // Waits for the complete HTTP response
        httpResponseHandler.queue().take().sync();
        System.out.println("Finished SPDY HTTP GET");

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

From source file:com.heliosapm.streams.metrichub.HubManager.java

License:Apache License

protected HttpRequest buildHttpRequest(final ByteBuf jsonRequest) {
    final String[] endpoints = tsdbEndpoint.getUpServers();
    final URL postUrl = URLHelper.toURL(endpoints[0] + "/query/");
    log.debug("Http Post to [{}]", postUrl);
    final DefaultFullHttpRequest request = new DefaultFullHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.POST,
            postUrl.getPath(), jsonRequest);
    request.headers().set(HttpHeaderNames.HOST, postUrl.getHost());
    request.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.KEEP_ALIVE);
    request.headers().set(HttpHeaderNames.ACCEPT_ENCODING, HttpHeaderValues.GZIP);
    //      request.headers().set(HttpHeaderNames.CONTENT_ENCODING, HttpHeaderValues.GZIP);
    request.headers().set(HttpHeaderNames.CONTENT_LENGTH, jsonRequest.readableBytes());
    request.headers().set(HttpHeaderNames.CONTENT_TYPE, HttpHeaderValues.APPLICATION_JSON);
    return request;
}

From source file:com.hop.hhxx.example.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  av a2  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.writeAndFlush(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,
                    Unpooled.copiedBuffer(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.writeAndFlush(request), channel.newPromise());
            streamId += 2;
        }
        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();
    }
}

Example usage for io.netty.handler.codec.http HttpHeaderNames ACCEPT_ENCODING

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