com.xxx.netty.handle.SecureChatServerHandler.java Source code

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Here is the source code for com.xxx.netty.handle.SecureChatServerHandler.java

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/*
 * 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.
 */
package com.xxx.netty.handle;

import java.net.InetAddress;
import java.util.Map;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import com.xxx.netty.run.SecureChatServer;
import com.xxx.util.NetAddressUtil;

import io.netty.channel.Channel;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.ssl.SslHandler;
import io.netty.util.concurrent.Future;
import io.netty.util.concurrent.GenericFutureListener;

/**
 * Handles a server-side channel.
 */
@Component
public class SecureChatServerHandler extends SimpleChannelInboundHandler<String> {
    private static final Logger LOGGER = LoggerFactory.getLogger(SecureChatServerHandler.class);

    String serverInternetIp;

    @Value("${server.port}")
    String serverPort;

    public SecureChatServerHandler() {
        try {
            serverInternetIp = NetAddressUtil.getInetnetIp();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Override
    public void channelActive(final ChannelHandlerContext ctx) {// ?
        // System.out.println("channelactive!");

        // Once session is secured, send a greeting and register the channel to
        // the global channel
        // list so the channel received the messages from others.
        // ??
        ctx.pipeline().get(SslHandler.class).handshakeFuture()
                .addListener(new GenericFutureListener<Future<Channel>>() {
                    @Override
                    public void operationComplete(Future<Channel> future) throws Exception {
                        ctx.writeAndFlush("@Welcome to " + InetAddress.getLocalHost().getHostName()
                                + " secure chat service!\n");
                        LOGGER.info("connected :{}" + ctx.channel().remoteAddress());
                    }
                });

    }

    protected void messageReceived(ChannelHandlerContext context, String msg) throws Exception {
        channelRead(context, msg);
    }

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

    public void channelRead(ChannelHandlerContext ctx, String msg) throws Exception {// ????
        LOGGER.info("c2s received=>> :{}" + msg);
        if (msg.contains("@login:")) {
            SecureChatServer.channelMap.put(msg.split(":")[1], ctx.channel());
            ctx.channel().writeAndFlush(msg.split(":")[1] + " login is OK ,welcome!" + '\n');
        } else if (msg.contains("@all:")) {
            for (Map.Entry<String, Channel> client : SecureChatServer.channelMap.entrySet()) { // ??????
                client.getValue().writeAndFlush(msg + '\n').sync();
            }
        }
        if (msg.contains("@to:")) {
            String friend = msg.split(":")[1];
            Channel channel = SecureChatServer.channelMap.get(friend);
            if (null != channel) {
                channel.writeAndFlush(msg + '\n').sync();
            } else {
                ctx.channel().writeAndFlush("no online!").sync();
            }

        }
        // Close the connection if the client has sent 'bye'.
        if (msg.toLowerCase().matches("^[bye|exit|quit]{3,4}$")) {
            ctx.close();
        }
    }

}