com.kingmed.bidir.gateway.server.GatewayServerHandler.java Source code

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Here is the source code for com.kingmed.bidir.gateway.server.GatewayServerHandler.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.kingmed.bidir.gateway.server;

import java.net.InetAddress;

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.handler.ssl.SslHandler;
import io.netty.util.concurrent.Future;
import io.netty.util.concurrent.GenericFutureListener;
import io.netty.util.concurrent.GlobalEventExecutor;
import lombok.extern.slf4j.Slf4j;

/**
 * Handles a server-side channel.
 */
@Slf4j
public class GatewayServerHandler extends SimpleChannelInboundHandler<String> {

    static final ChannelGroup channels = new DefaultChannelGroup(GlobalEventExecutor.INSTANCE);

    /**
     * ?????
     */
    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        // TODO Auto-generated method stub
        ctx.pipeline().get(SslHandler.class).handshakeFuture()
                .addListener(new GenericFutureListener<Future<Channel>>() {

                    @Override
                    public void operationComplete(Future<Channel> future) throws Exception {
                        ctx.writeAndFlush(" " + InetAddress.getLocalHost().getHostName()
                                + "???!\n");
                        ctx.writeAndFlush("? "
                                + ctx.pipeline().get(SslHandler.class).engine().getSession().getCipherSuite()
                                + " cipher suite.\n");
                        channels.add(ctx.channel());
                    }

                });
    }

    /**
     * ?
     * 1. ??
     * 2. ??
     * 3. channel?????
     */
    @Override
    protected void channelRead0(ChannelHandlerContext ctx, String msg) throws Exception {
        //TODO 
        for (Channel c : channels) {
            if (c != ctx.channel()) {
                c.writeAndFlush("[" + ctx.channel().remoteAddress() + "] " + msg + '\n');
            } else {
                c.writeAndFlush("[you] " + msg + '\n');
            }
        }
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        cause.printStackTrace();
        log.warn("Unexpected exception from downstream.", cause);
        ctx.close();
    }

}