e4995be33c
Motivation: In many places Netty uses Unpooled.buffer(0) while should use EMPTY_BUFFER. We can't change this due to back compatibility in the constructors but can use Unpooled.EMPTY_BUFFER in some cases to ensure we not allocate at all. In others we can directly use the allocator either from the Channel / ChannelHandlerContext or the request / response. Modification: - Use Unpooled.EMPTY_BUFFER where possible - Use allocator where possible Result: Fixes #9345 for websockets and http package
111 lines
4.2 KiB
Java
111 lines
4.2 KiB
Java
/*
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* Copyright 2012 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.example.http.snoop;
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import io.netty.bootstrap.Bootstrap;
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import io.netty.buffer.Unpooled;
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import io.netty.channel.Channel;
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import io.netty.channel.EventLoopGroup;
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import io.netty.channel.MultithreadEventLoopGroup;
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import io.netty.channel.nio.NioHandler;
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import io.netty.channel.socket.nio.NioSocketChannel;
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import io.netty.handler.codec.http.DefaultFullHttpRequest;
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import io.netty.handler.codec.http.HttpHeaderNames;
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import io.netty.handler.codec.http.HttpHeaderValues;
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import io.netty.handler.codec.http.HttpMethod;
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import io.netty.handler.codec.http.HttpRequest;
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import io.netty.handler.codec.http.HttpVersion;
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import io.netty.handler.codec.http.cookie.ClientCookieEncoder;
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import io.netty.handler.codec.http.cookie.DefaultCookie;
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import io.netty.handler.ssl.SslContext;
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import io.netty.handler.ssl.SslContextBuilder;
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import io.netty.handler.ssl.util.InsecureTrustManagerFactory;
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import java.net.URI;
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/**
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* A simple HTTP client that prints out the content of the HTTP response to
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* {@link System#out} to test {@link HttpSnoopServer}.
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*/
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public final class HttpSnoopClient {
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static final String URL = System.getProperty("url", "http://127.0.0.1:8080/");
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public static void main(String[] args) throws Exception {
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URI uri = new URI(URL);
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String scheme = uri.getScheme() == null? "http" : uri.getScheme();
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String host = uri.getHost() == null? "127.0.0.1" : uri.getHost();
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int port = uri.getPort();
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if (port == -1) {
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if ("http".equalsIgnoreCase(scheme)) {
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port = 80;
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} else if ("https".equalsIgnoreCase(scheme)) {
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port = 443;
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}
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}
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if (!"http".equalsIgnoreCase(scheme) && !"https".equalsIgnoreCase(scheme)) {
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System.err.println("Only HTTP(S) is supported.");
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return;
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}
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// Configure SSL context if necessary.
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final boolean ssl = "https".equalsIgnoreCase(scheme);
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final SslContext sslCtx;
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if (ssl) {
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sslCtx = SslContextBuilder.forClient()
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.trustManager(InsecureTrustManagerFactory.INSTANCE).build();
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} else {
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sslCtx = null;
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}
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// Configure the client.
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EventLoopGroup group = new MultithreadEventLoopGroup(NioHandler.newFactory());
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try {
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Bootstrap b = new Bootstrap();
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b.group(group)
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.channel(NioSocketChannel.class)
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.handler(new HttpSnoopClientInitializer(sslCtx));
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// Make the connection attempt.
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Channel ch = b.connect(host, port).sync().channel();
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// Prepare the HTTP request.
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HttpRequest request = new DefaultFullHttpRequest(
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HttpVersion.HTTP_1_1, HttpMethod.GET, uri.getRawPath(), Unpooled.EMPTY_BUFFER);
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request.headers().set(HttpHeaderNames.HOST, host);
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request.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.CLOSE);
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request.headers().set(HttpHeaderNames.ACCEPT_ENCODING, HttpHeaderValues.GZIP);
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// Set some example cookies.
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request.headers().set(
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HttpHeaderNames.COOKIE,
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ClientCookieEncoder.STRICT.encode(
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new DefaultCookie("my-cookie", "foo"),
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new DefaultCookie("another-cookie", "bar")));
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// Send the HTTP request.
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ch.writeAndFlush(request);
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// Wait for the server to close the connection.
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ch.closeFuture().sync();
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} finally {
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// Shut down executor threads to exit.
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group.shutdownGracefully();
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}
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}
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}
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