com.carlos.netty.server.ObjectEchoServerHandler.java Source code

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Here is the source code for com.carlos.netty.server.ObjectEchoServerHandler.java

Source

package com.carlos.netty.server;
/*
 * Copyright 2012 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.
 */

import io.netty.channel.Channel;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.channel.group.ChannelGroup;
import io.netty.channel.group.DefaultChannelGroup;
import io.netty.util.concurrent.GlobalEventExecutor;

/**
 * Handles both client-side and server-side handler depending on which
 * constructor was called.
 */
public class ObjectEchoServerHandler extends SimpleChannelInboundHandler<String> {
    static final ChannelGroup channels = new DefaultChannelGroup(GlobalEventExecutor.INSTANCE);

    @Override
    public void channelActive(final ChannelHandlerContext ctx) {
        channels.add(ctx.channel());
    }

    @Override
    public void channelRead0(ChannelHandlerContext ctx, String msg) throws Exception {
        // Send the received message to all channels but the current one.
        for (Channel c : channels) {
            if (c != ctx.channel()) {
                c.writeAndFlush("[" + ctx.channel().remoteAddress() + "] " + msg + '\n');
            } else {
                c.writeAndFlush("[you] " + msg + '\n');
            }
        }

        // Close the connection if the client has sent 'bye'.
        if ("bye".equals(msg.toLowerCase())) {
            ctx.close();
        }
    }

    @Override
    public void channelReadComplete(ChannelHandlerContext ctx) {
        ctx.flush();
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
        cause.printStackTrace();
        ctx.close();
    }
}