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The HttpUpload example *almost* works

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There are some weird off-by-one artefacts where ASCII period and newline character bytes switch places.
This needs more investigation.
This commit is contained in:
Chris Vest 2021-03-06 11:21:17 +01:00
parent 602389712c
commit 8d31917bc6
6 changed files with 1610 additions and 0 deletions
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src/test/java/io/netty/buffer/api/examples/http/upload/HttpUploadClient.java Normal file
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/*
* Copyright 2021 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.buffer.api.examples.http.upload;
import io.netty.bootstrap.Bootstrap;
import io.netty.buffer.api.adaptor.ByteBufAllocatorAdaptor;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.MultithreadEventLoopGroup;
import io.netty.channel.nio.NioHandler;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.handler.codec.http.DefaultHttpRequest;
import io.netty.handler.codec.http.HttpHeaderNames;
import io.netty.handler.codec.http.HttpHeaderValues;
import io.netty.handler.codec.http.HttpHeaders;
import io.netty.handler.codec.http.HttpMethod;
import io.netty.handler.codec.http.HttpRequest;
import io.netty.handler.codec.http.HttpVersion;
import io.netty.handler.codec.http.QueryStringEncoder;
import io.netty.handler.codec.http.cookie.ClientCookieEncoder;
import io.netty.handler.codec.http.cookie.DefaultCookie;
import io.netty.handler.codec.http.multipart.DefaultHttpDataFactory;
import io.netty.handler.codec.http.multipart.DiskAttribute;
import io.netty.handler.codec.http.multipart.DiskFileUpload;
import io.netty.handler.codec.http.multipart.HttpDataFactory;
import io.netty.handler.codec.http.multipart.HttpPostRequestEncoder;
import io.netty.handler.codec.http.multipart.InterfaceHttpData;
import io.netty.handler.ssl.SslContext;
import io.netty.handler.ssl.SslContextBuilder;
import io.netty.handler.ssl.util.InsecureTrustManagerFactory;
import io.netty.util.internal.SocketUtils;
import java.io.File;
import java.io.FileNotFoundException;
import java.net.URI;
import java.util.List;
import java.util.Map.Entry;
/**
* This class is meant to be run against {@link HttpUploadServer}.
*/
public final class HttpUploadClient {
static final String BASE_URL = System.getProperty("baseUrl", "http://127.0.0.1:8080/");
static final String FILE = System.getProperty("file", "README.adoc");
public static void main(String[] args) throws Exception {
String postSimple, postFile, get;
if (BASE_URL.endsWith("/")) {
postSimple = BASE_URL + "formpost";
postFile = BASE_URL + "formpostmultipart";
get = BASE_URL + "formget";
} else {
postSimple = BASE_URL + "/formpost";
postFile = BASE_URL + "/formpostmultipart";
get = BASE_URL + "/formget";
}
URI uriSimple = new URI(postSimple);
String scheme = uriSimple.getScheme() == null? "http" : uriSimple.getScheme();
String host = uriSimple.getHost() == null? "127.0.0.1" : uriSimple.getHost();
int port = uriSimple.getPort();
if (port == -1) {
if ("http".equalsIgnoreCase(scheme)) {
port = 80;
} else if ("https".equalsIgnoreCase(scheme)) {
port = 443;
}
}
if (!"http".equalsIgnoreCase(scheme) && !"https".equalsIgnoreCase(scheme)) {
System.err.println("Only HTTP(S) is supported.");
return;
}
final boolean ssl = "https".equalsIgnoreCase(scheme);
final SslContext sslCtx;
if (ssl) {
sslCtx = SslContextBuilder.forClient()
.trustManager(InsecureTrustManagerFactory.INSTANCE).build();
} else {
sslCtx = null;
}
URI uriFile = new URI(postFile);
File file = new File(FILE);
if (!file.canRead()) {
throw new FileNotFoundException(FILE);
}
// Configure the client.
ByteBufAllocatorAdaptor allocator = new ByteBufAllocatorAdaptor();
EventLoopGroup group = new MultithreadEventLoopGroup(NioHandler.newFactory());
// setup the factory: here using a mixed memory/disk based on size threshold
HttpDataFactory factory = new DefaultHttpDataFactory(DefaultHttpDataFactory.MINSIZE); // Disk if MINSIZE exceed
DiskFileUpload.deleteOnExitTemporaryFile = true; // should delete file on exit (in normal exit)
DiskFileUpload.baseDirectory = null; // system temp directory
DiskAttribute.deleteOnExitTemporaryFile = true; // should delete file on exit (in normal exit)
DiskAttribute.baseDirectory = null; // system temp directory
try {
Bootstrap b = new Bootstrap();
b.group(group).channel(NioSocketChannel.class)
.option(ChannelOption.ALLOCATOR, allocator)
.handler(new HttpUploadClientInitializer(sslCtx));
// Simple Get form: no factory used (not usable)
List<Entry<String, String>> headers = formget(b, host, port, get, uriSimple);
if (headers == null) {
factory.cleanAllHttpData();
return;
}
// Simple Post form: factory used for big attributes
List<InterfaceHttpData> bodylist = formpost(b, host, port, uriSimple, file, factory, headers);
if (bodylist == null) {
factory.cleanAllHttpData();
return;
}
// Multipart Post form: factory used
formpostmultipart(b, host, port, uriFile, factory, headers, bodylist);
} finally {
// Shut down executor threads to exit.
group.shutdownGracefully();
// Really clean all temporary files if they still exist
factory.cleanAllHttpData();
}
}
/**
* 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
**/
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 <20><><EFBFBD>&");
// 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();
}
/**
* 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
*/
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 <20><><EFBFBD>&");
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;
}
/**
* Multipart example
*/
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();
}
// use to simulate a small TEXTAREA field in a form
private static final String textArea = "short text";
// use to simulate a big TEXTAREA field in a form
private static final String textAreaLong =
"lkjlkjlKJLKJLKJLKJLJlkj lklkj\r\n\r\nLKJJJJJJJJKKKKKKKKKKKKKKK <20><><EFBFBD><EFBFBD>&\r\n\r\n" +
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"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
"MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n";
}

79
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/*
* Copyright 2021 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.buffer.api.examples.http.upload;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.HttpContent;
import io.netty.handler.codec.http.HttpObject;
import io.netty.handler.codec.http.HttpResponse;
import io.netty.handler.codec.http.HttpUtil;
import io.netty.handler.codec.http.LastHttpContent;
import io.netty.util.CharsetUtil;
/**
* Handler that just dumps the contents of the response from the server
*/
public class HttpUploadClientHandler extends SimpleChannelInboundHandler<HttpObject> {
private boolean readingChunks;
@Override
public void messageReceived(ChannelHandlerContext ctx, HttpObject msg) {
if (msg instanceof HttpResponse) {
HttpResponse response = (HttpResponse) msg;
System.err.println("STATUS: " + response.status());
System.err.println("VERSION: " + response.protocolVersion());
if (!response.headers().isEmpty()) {
for (CharSequence name : response.headers().names()) {
for (CharSequence value : response.headers().getAll(name)) {
System.err.println("HEADER: " + name + " = " + value);
}
}
}
if (response.status().code() == 200 && HttpUtil.isTransferEncodingChunked(response)) {
readingChunks = true;
System.err.println("CHUNKED CONTENT {");
} else {
System.err.println("CONTENT {");
}
}
if (msg instanceof HttpContent) {
HttpContent chunk = (HttpContent) msg;
System.err.println(chunk.content().toString(CharsetUtil.UTF_8));
if (chunk instanceof LastHttpContent) {
if (readingChunks) {
System.err.println("} END OF CHUNKED CONTENT");
} else {
System.err.println("} END OF CONTENT");
}
readingChunks = false;
} else {
System.err.println(chunk.content().toString(CharsetUtil.UTF_8));
}
}
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
cause.printStackTrace();
ctx.channel().close();
}
}

52
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/*
* Copyright 2021 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.buffer.api.examples.http.upload;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.socket.SocketChannel;
import io.netty.handler.codec.http.HttpClientCodec;
import io.netty.handler.codec.http.HttpContentDecompressor;
import io.netty.handler.ssl.SslContext;
import io.netty.handler.stream.ChunkedWriteHandler;
public class HttpUploadClientInitializer extends ChannelInitializer<SocketChannel> {
private final SslContext sslCtx;
public HttpUploadClientInitializer(SslContext sslCtx) {
this.sslCtx = sslCtx;
}
@Override
public void initChannel(SocketChannel ch) {
ChannelPipeline pipeline = ch.pipeline();
if (sslCtx != null) {
pipeline.addLast("ssl", sslCtx.newHandler(ch.alloc()));
}
pipeline.addLast("codec", new HttpClientCodec());
// Remove the following line if you don't want automatic content decompression.
pipeline.addLast("inflater", new HttpContentDecompressor());
// to be used since huge file transfer
pipeline.addLast("chunkedWriter", new ChunkedWriteHandler());
pipeline.addLast("handler", new HttpUploadClientHandler());
}
}

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/*
* Copyright 2021 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.buffer.api.examples.http.upload;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.buffer.api.adaptor.ByteBufAllocatorAdaptor;
import io.netty.channel.Channel;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.MultithreadEventLoopGroup;
import io.netty.channel.nio.NioHandler;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;
import io.netty.handler.ssl.SslContext;
import io.netty.handler.ssl.SslContextBuilder;
import io.netty.handler.ssl.util.SelfSignedCertificate;
/**
* An HTTP server showing how to use the HTTP multipart package for file uploads and decoding post data.
*/
public final class HttpUploadServer {
static final boolean SSL = System.getProperty("ssl") != null;
static final int PORT = Integer.parseInt(System.getProperty("port", SSL? "8443" : "8080"));
public static void main(String[] args) throws Exception {
// Configure SSL.
final SslContext sslCtx;
if (SSL) {
SelfSignedCertificate ssc = new SelfSignedCertificate();
sslCtx = SslContextBuilder.forServer(ssc.certificate(), ssc.privateKey()).build();
} else {
sslCtx = null;
}
ByteBufAllocatorAdaptor allocator = new ByteBufAllocatorAdaptor();
EventLoopGroup bossGroup = new MultithreadEventLoopGroup(1, NioHandler.newFactory());
EventLoopGroup workerGroup = new MultithreadEventLoopGroup(NioHandler.newFactory());
try {
ServerBootstrap b = new ServerBootstrap();
b.group(bossGroup, workerGroup);
b.channel(NioServerSocketChannel.class);
b.childOption(ChannelOption.ALLOCATOR, allocator);
b.handler(new LoggingHandler(LogLevel.INFO));
b.childHandler(new HttpUploadServerInitializer(sslCtx));
Channel ch = b.bind(PORT).sync().channel();
System.err.println("Open your web browser and navigate to " +
(SSL? "https" : "http") + "://127.0.0.1:" + PORT + '/');
ch.closeFuture().sync();
} finally {
bossGroup.shutdownGracefully();
workerGroup.shutdownGracefully();
}
}
}

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/*
* Copyright 2021 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.buffer.api.examples.http.upload;
import io.netty.buffer.ByteBuf;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.DefaultFullHttpResponse;
import io.netty.handler.codec.http.FullHttpResponse;
import io.netty.handler.codec.http.HttpContent;
import io.netty.handler.codec.http.HttpHeaderNames;
import io.netty.handler.codec.http.HttpHeaderValues;
import io.netty.handler.codec.http.HttpMethod;
import io.netty.handler.codec.http.HttpObject;
import io.netty.handler.codec.http.HttpRequest;
import io.netty.handler.codec.http.HttpResponseStatus;
import io.netty.handler.codec.http.HttpUtil;
import io.netty.handler.codec.http.HttpVersion;
import io.netty.handler.codec.http.LastHttpContent;
import io.netty.handler.codec.http.QueryStringDecoder;
import io.netty.handler.codec.http.cookie.Cookie;
import io.netty.handler.codec.http.cookie.ServerCookieDecoder;
import io.netty.handler.codec.http.cookie.ServerCookieEncoder;
import io.netty.handler.codec.http.multipart.Attribute;
import io.netty.handler.codec.http.multipart.DefaultHttpDataFactory;
import io.netty.handler.codec.http.multipart.DiskAttribute;
import io.netty.handler.codec.http.multipart.DiskFileUpload;
import io.netty.handler.codec.http.multipart.FileUpload;
import io.netty.handler.codec.http.multipart.HttpData;
import io.netty.handler.codec.http.multipart.HttpDataFactory;
import io.netty.handler.codec.http.multipart.HttpPostRequestDecoder;
import io.netty.handler.codec.http.multipart.HttpPostRequestDecoder.EndOfDataDecoderException;
import io.netty.handler.codec.http.multipart.HttpPostRequestDecoder.ErrorDataDecoderException;
import io.netty.handler.codec.http.multipart.InterfaceHttpData;
import io.netty.handler.codec.http.multipart.InterfaceHttpData.HttpDataType;
import io.netty.util.CharsetUtil;
import java.io.IOException;
import java.net.URI;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
import static io.netty.buffer.Unpooled.copiedBuffer;
public class HttpUploadServerHandler extends SimpleChannelInboundHandler<HttpObject> {
private static final Logger logger = Logger.getLogger(HttpUploadServerHandler.class.getName());
private HttpRequest request;
private HttpData partialContent;
private final StringBuilder responseContent = new StringBuilder();
private static final HttpDataFactory factory =
new DefaultHttpDataFactory(DefaultHttpDataFactory.MINSIZE); // Disk if size exceed
private HttpPostRequestDecoder decoder;
static {
DiskFileUpload.deleteOnExitTemporaryFile = true; // should delete file
// on exit (in normal
// exit)
DiskFileUpload.baseDirectory = null; // system temp directory
DiskAttribute.deleteOnExitTemporaryFile = true; // should delete file on
// exit (in normal exit)
DiskAttribute.baseDirectory = null; // system temp directory
}
@Override
public void channelInactive(ChannelHandlerContext ctx) throws Exception {
if (decoder != null) {
decoder.cleanFiles();
}
}
@Override
public void messageReceived(ChannelHandlerContext ctx, HttpObject msg) throws Exception {
if (msg instanceof HttpRequest) {
HttpRequest request = this.request = (HttpRequest) msg;
URI uri = new URI(request.uri());
if (!uri.getPath().startsWith("/form")) {
// Write Menu
writeMenu(ctx);
return;
}
responseContent.setLength(0);
responseContent.append("WELCOME TO THE WILD WILD WEB SERVER\r\n");
responseContent.append("===================================\r\n");
responseContent.append("VERSION: " + request.protocolVersion().text() + "\r\n");
responseContent.append("REQUEST_URI: " + request.uri() + "\r\n\r\n");
responseContent.append("\r\n\r\n");
// new getMethod
for (Entry<String, String> entry : request.headers()) {
responseContent.append("HEADER: " + entry.getKey() + '=' + entry.getValue() + "\r\n");
}
responseContent.append("\r\n\r\n");
// new getMethod
Set<Cookie> cookies;
String value = request.headers().get(HttpHeaderNames.COOKIE);
if (value == null) {
cookies = Collections.emptySet();
} else {
cookies = ServerCookieDecoder.STRICT.decode(value);
}
for (Cookie cookie : cookies) {
responseContent.append("COOKIE: " + cookie + "\r\n");
}
responseContent.append("\r\n\r\n");
QueryStringDecoder decoderQuery = new QueryStringDecoder(request.uri());
Map<String, List<String>> uriAttributes = decoderQuery.parameters();
for (Entry<String, List<String>> attr: uriAttributes.entrySet()) {
for (String attrVal: attr.getValue()) {
responseContent.append("URI: " + attr.getKey() + '=' + attrVal + "\r\n");
}
}
responseContent.append("\r\n\r\n");
// if GET Method: should not try to create an HttpPostRequestDecoder
if (HttpMethod.GET.equals(request.method())) {
// GET Method: should not try to create an HttpPostRequestDecoder
// So stop here
responseContent.append("\r\n\r\nEND OF GET CONTENT\r\n");
// Not now: LastHttpContent will be sent writeResponse(ctx.channel());
return;
}
try {
decoder = new HttpPostRequestDecoder(factory, request);
} catch (ErrorDataDecoderException e1) {
logger.log(Level.WARNING, e1.getMessage(), e1);
responseContent.append(e1.getMessage());
writeResponse(ctx.channel(), true);
return;
}
boolean readingChunks = HttpUtil.isTransferEncodingChunked(request);
responseContent.append("Is Chunked: " + readingChunks + "\r\n");
responseContent.append("IsMultipart: " + decoder.isMultipart() + "\r\n");
if (readingChunks) {
// Chunk version
responseContent.append("Chunks: ");
}
}
// check if the decoder was constructed before
// if not it handles the form get
if (decoder != null) {
if (msg instanceof HttpContent) {
// New chunk is received
HttpContent chunk = (HttpContent) msg;
try {
decoder.offer(chunk);
} catch (ErrorDataDecoderException e1) {
logger.log(Level.WARNING, e1.getMessage(), e1);
responseContent.append(e1.getMessage());
writeResponse(ctx.channel(), true);
return;
}
responseContent.append('o');
// example of reading chunk by chunk (minimize memory usage due to
// Factory)
readHttpDataChunkByChunk();
// example of reading only if at the end
if (chunk instanceof LastHttpContent) {
writeResponse(ctx.channel());
reset();
}
}
} else {
writeResponse(ctx.channel());
}
}
private void reset() {
request = null;
// destroy the decoder to release all resources
decoder.destroy();
decoder = null;
}
/**
* Example of reading request by chunk and getting values from chunk to chunk
*/
private void readHttpDataChunkByChunk() {
try {
while (decoder.hasNext()) {
InterfaceHttpData data = decoder.next();
if (data != null) {
// check if current HttpData is a FileUpload and previously set as partial
long length = -1;
if (partialContent == data) {
logger.info(" 100% (FinalSize: " + (length = partialContent.length()) + ')');
partialContent = null;
}
// new value
writeHttpData(data);
}
}
// Check partial decoding for a FileUpload
InterfaceHttpData data = decoder.currentPartialHttpData();
if (data != null) {
StringBuilder builder = new StringBuilder();
if (partialContent == null) {
partialContent = (HttpData) data;
if (partialContent instanceof FileUpload) {
builder.append("Start FileUpload: ")
.append(((FileUpload) partialContent).getFilename()).append(' ');
} else {
builder.append("Start Attribute: ")
.append(partialContent.getName()).append(' ');
}
builder.append("(DefinedSize: ").append(partialContent.definedLength()).append(')');
}
if (partialContent.definedLength() > 0) {
builder.append(' ').append(partialContent.length() * 100 / partialContent.definedLength())
.append("% ");
} else {
builder.append(' ').append(partialContent.length()).append(' ');
}
logger.info(builder.toString());
}
} catch (EndOfDataDecoderException e1) {
// end
responseContent.append("\r\n\r\nEND OF CONTENT CHUNK BY CHUNK\r\n\r\n");
}
}
private void writeHttpData(InterfaceHttpData data) {
if (data.getHttpDataType() == HttpDataType.Attribute) {
Attribute attribute = (Attribute) data;
String value;
try {
value = attribute.getValue();
} catch (IOException e1) {
// Error while reading data from File, only print name and error
logger.log(Level.WARNING, e1.getMessage(), e1);
responseContent.append("\r\nBODY Attribute: " + attribute.getHttpDataType().name() + ": "
+ attribute.getName() + " Error while reading value: " + e1.getMessage() + "\r\n");
return;
}
if (value.length() > 100) {
responseContent.append("\r\nBODY Attribute: " + attribute.getHttpDataType().name() + ": "
+ attribute.getName() + " data too long\r\n");
} else {
responseContent.append("\r\nBODY Attribute: " + attribute.getHttpDataType().name() + ": "
+ attribute + "\r\n");
}
} else {
responseContent.append("\r\nBODY FileUpload: " + data.getHttpDataType().name() + ": " + data
+ "\r\n");
if (data.getHttpDataType() == HttpDataType.FileUpload) {
FileUpload fileUpload = (FileUpload) data;
if (fileUpload.isCompleted()) {
if (fileUpload.length() < 10000) {
responseContent.append("\tContent of file\r\n");
try {
responseContent.append(fileUpload.getString(fileUpload.getCharset()));
} catch (IOException e1) {
// do nothing for the example
logger.log(Level.WARNING, e1.getMessage(), e1);
}
responseContent.append("\r\n");
} else {
responseContent.append("\tFile too long to be printed out:" + fileUpload.length() + "\r\n");
}
// fileUpload.isInMemory();// tells if the file is in Memory
// or on File
// fileUpload.renameTo(dest); // enable to move into another
// File dest
// decoder.removeFileUploadFromClean(fileUpload); //remove
// the File of to delete file
} else {
responseContent.append("\tFile to be continued but should not!\r\n");
}
}
}
}
private void writeResponse(Channel channel) {
writeResponse(channel, false);
}
private void writeResponse(Channel channel, boolean forceClose) {
// Convert the response content to a ChannelBuffer.
ByteBuf buf = copiedBuffer(responseContent.toString(), CharsetUtil.UTF_8);
responseContent.setLength(0);
// Decide whether to close the connection or not.
boolean keepAlive = HttpUtil.isKeepAlive(request) && !forceClose;
// Build the response object.
FullHttpResponse response = new DefaultFullHttpResponse(
HttpVersion.HTTP_1_1, HttpResponseStatus.OK, buf);
response.headers().set(HttpHeaderNames.CONTENT_TYPE, "text/plain; charset=UTF-8");
response.headers().setInt(HttpHeaderNames.CONTENT_LENGTH, buf.readableBytes());
if (!keepAlive) {
response.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.CLOSE);
} else if (request.protocolVersion().equals(HttpVersion.HTTP_1_0)) {
response.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.KEEP_ALIVE);
}
Set<Cookie> cookies;
String value = request.headers().get(HttpHeaderNames.COOKIE);
if (value == null) {
cookies = Collections.emptySet();
} else {
cookies = ServerCookieDecoder.STRICT.decode(value);
}
if (!cookies.isEmpty()) {
// Reset the cookies if necessary.
for (Cookie cookie : cookies) {
response.headers().add(HttpHeaderNames.SET_COOKIE, ServerCookieEncoder.STRICT.encode(cookie));
}
}
// Write the response.
ChannelFuture future = channel.writeAndFlush(response);
// Close the connection after the write operation is done if necessary.
if (!keepAlive) {
future.addListener(ChannelFutureListener.CLOSE);
}
}
private void writeMenu(ChannelHandlerContext ctx) {
// print several HTML forms
// Convert the response content to a ChannelBuffer.
responseContent.setLength(0);
// create Pseudo Menu
responseContent.append("<html>");
responseContent.append("<head>");
responseContent.append("<title>Netty Test Form</title>\r\n");
responseContent.append("</head>\r\n");
responseContent.append("<body bgcolor=white><style>td{font-size: 12pt;}</style>");
responseContent.append("<table border=\"0\">");
responseContent.append("<tr>");
responseContent.append("<td>");
responseContent.append("<h1>Netty Test Form</h1>");
responseContent.append("Choose one FORM");
responseContent.append("</td>");
responseContent.append("</tr>");
responseContent.append("</table>\r\n");
// GET
responseContent.append("<CENTER>GET FORM<HR WIDTH=\"75%\" NOSHADE color=\"blue\"></CENTER>");
responseContent.append("<FORM ACTION=\"/formget\" METHOD=\"GET\">");
responseContent.append("<input type=hidden name=getform value=\"GET\">");
responseContent.append("<table border=\"0\">");
responseContent.append("<tr><td>Fill with value: <br> <input type=text name=\"info\" size=10></td></tr>");
responseContent.append("<tr><td>Fill with value: <br> <input type=text name=\"secondinfo\" size=20>");
responseContent
.append("<tr><td>Fill with value: <br> <textarea name=\"thirdinfo\" cols=40 rows=10></textarea>");
responseContent.append("</td></tr>");
responseContent.append("<tr><td><INPUT TYPE=\"submit\" NAME=\"Send\" VALUE=\"Send\"></INPUT></td>");
responseContent.append("<td><INPUT TYPE=\"reset\" NAME=\"Clear\" VALUE=\"Clear\" ></INPUT></td></tr>");
responseContent.append("</table></FORM>\r\n");
responseContent.append("<CENTER><HR WIDTH=\"75%\" NOSHADE color=\"blue\"></CENTER>");
// POST
responseContent.append("<CENTER>POST FORM<HR WIDTH=\"75%\" NOSHADE color=\"blue\"></CENTER>");
responseContent.append("<FORM ACTION=\"/formpost\" METHOD=\"POST\">");
responseContent.append("<input type=hidden name=getform value=\"POST\">");
responseContent.append("<table border=\"0\">");
responseContent.append("<tr><td>Fill with value: <br> <input type=text name=\"info\" size=10></td></tr>");
responseContent.append("<tr><td>Fill with value: <br> <input type=text name=\"secondinfo\" size=20>");
responseContent
.append("<tr><td>Fill with value: <br> <textarea name=\"thirdinfo\" cols=40 rows=10></textarea>");
responseContent.append("<tr><td>Fill with file (only file name will be transmitted): <br> "
+ "<input type=file name=\"myfile\">");
responseContent.append("</td></tr>");
responseContent.append("<tr><td><INPUT TYPE=\"submit\" NAME=\"Send\" VALUE=\"Send\"></INPUT></td>");
responseContent.append("<td><INPUT TYPE=\"reset\" NAME=\"Clear\" VALUE=\"Clear\" ></INPUT></td></tr>");
responseContent.append("</table></FORM>\r\n");
responseContent.append("<CENTER><HR WIDTH=\"75%\" NOSHADE color=\"blue\"></CENTER>");
// POST with enctype="multipart/form-data"
responseContent.append("<CENTER>POST MULTIPART FORM<HR WIDTH=\"75%\" NOSHADE color=\"blue\"></CENTER>");
responseContent.append("<FORM ACTION=\"/formpostmultipart\" ENCTYPE=\"multipart/form-data\" METHOD=\"POST\">");
responseContent.append("<input type=hidden name=getform value=\"POST\">");
responseContent.append("<table border=\"0\">");
responseContent.append("<tr><td>Fill with value: <br> <input type=text name=\"info\" size=10></td></tr>");
responseContent.append("<tr><td>Fill with value: <br> <input type=text name=\"secondinfo\" size=20>");
responseContent
.append("<tr><td>Fill with value: <br> <textarea name=\"thirdinfo\" cols=40 rows=10></textarea>");
responseContent.append("<tr><td>Fill with file: <br> <input type=file name=\"myfile\">");
responseContent.append("</td></tr>");
responseContent.append("<tr><td><INPUT TYPE=\"submit\" NAME=\"Send\" VALUE=\"Send\"></INPUT></td>");
responseContent.append("<td><INPUT TYPE=\"reset\" NAME=\"Clear\" VALUE=\"Clear\" ></INPUT></td></tr>");
responseContent.append("</table></FORM>\r\n");
responseContent.append("<CENTER><HR WIDTH=\"75%\" NOSHADE color=\"blue\"></CENTER>");
responseContent.append("</body>");
responseContent.append("</html>");
ByteBuf buf = copiedBuffer(responseContent.toString(), CharsetUtil.UTF_8);
// Build the response object.
FullHttpResponse response = new DefaultFullHttpResponse(
HttpVersion.HTTP_1_1, HttpResponseStatus.OK, buf);
response.headers().set(HttpHeaderNames.CONTENT_TYPE, "text/html; charset=UTF-8");
response.headers().setInt(HttpHeaderNames.CONTENT_LENGTH, buf.readableBytes());
// Decide whether to close the connection or not.
boolean keepAlive = HttpUtil.isKeepAlive(request);
if (!keepAlive) {
response.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.CLOSE);
} else if (request.protocolVersion().equals(HttpVersion.HTTP_1_0)) {
response.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.KEEP_ALIVE);
}
// Write the response.
ChannelFuture future = ctx.channel().writeAndFlush(response);
// Close the connection after the write operation is done if necessary.
if (!keepAlive) {
future.addListener(ChannelFutureListener.CLOSE);
}
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
logger.log(Level.WARNING, responseContent.toString(), cause);
ctx.channel().close();
}
}

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src/test/java/io/netty/buffer/api/examples/http/upload/HttpUploadServerInitializer.java Normal file
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@ -0,0 +1,50 @@
/*
* Copyright 2021 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.buffer.api.examples.http.upload;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.socket.SocketChannel;
import io.netty.handler.codec.http.HttpContentCompressor;
import io.netty.handler.codec.http.HttpRequestDecoder;
import io.netty.handler.codec.http.HttpResponseEncoder;
import io.netty.handler.ssl.SslContext;
public class HttpUploadServerInitializer extends ChannelInitializer<SocketChannel> {
private final SslContext sslCtx;
public HttpUploadServerInitializer(SslContext sslCtx) {
this.sslCtx = sslCtx;
}
@Override
public void initChannel(SocketChannel ch) {
ChannelPipeline pipeline = ch.pipeline();
if (sslCtx != null) {
pipeline.addLast(sslCtx.newHandler(ch.alloc()));
}
pipeline.addLast(new HttpRequestDecoder());
pipeline.addLast(new HttpResponseEncoder());
// Remove the following line if you don't want automatic content compression.
pipeline.addLast(new HttpContentCompressor());
pipeline.addLast(new HttpUploadServerHandler());
}
}