Java example source code file (HttpServer.java)

This example Java source code file (HttpServer.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

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Java - Java tags/keywords

channel, channelfuture, channelinitializer, eventloopgroup, exception, http1requesthandler, httpobjectaggregator, httprequestdecoder, httpresponseencoder, httpserver, max_content_length, override, port, serverbootstrap

The HttpServer.java Java example source code

/*
 * Copyright 2015 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:
 *
 *   http://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.example.http2.tiles;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.HttpRequestDecoder;
import io.netty.handler.codec.http.HttpResponseEncoder;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.logging.LoggingHandler;

/**
 * Demonstrates a http server using Netty to display a bunch of images, simulate
 * latency and compare it against the http2 implementation.
 */
public final class HttpServer {

    public static final int PORT = Integer.parseInt(System.getProperty("http-port", "8080"));
    private static final int MAX_CONTENT_LENGTH = 1024 * 100;

    private final EventLoopGroup group;

    public HttpServer(EventLoopGroup eventLoopGroup) {
        group = eventLoopGroup;
    }

    public ChannelFuture start() throws Exception {
        ServerBootstrap b = new ServerBootstrap();
        b.option(ChannelOption.SO_BACKLOG, 1024);

        b.group(group).channel(NioServerSocketChannel.class).handler(new LoggingHandler(LogLevel.INFO))
        .childHandler(new ChannelInitializer<SocketChannel>() {
            @Override
            protected void initChannel(SocketChannel ch) throws Exception {
                ch.pipeline().addLast(new HttpRequestDecoder(),
                                      new HttpResponseEncoder(),
                                      new HttpObjectAggregator(MAX_CONTENT_LENGTH),
                                      new Http1RequestHandler());
            }
        });

        Channel ch = b.bind(PORT).sync().channel();
        return ch.closeFuture();
    }
}