com.JohnnyTests.NettySimpleChat.gui.NettyTCPClient.java Source code

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Here is the source code for com.JohnnyTests.NettySimpleChat.gui.NettyTCPClient.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.JohnnyTests.NettySimpleChat.gui;

import java.io.BufferedReader;
import java.io.InputStreamReader;

import io.netty.bootstrap.Bootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.handler.codec.string.StringDecoder;
import io.netty.handler.codec.string.StringEncoder;

import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;

import com.JohnnyTests.NettySimpleChat.ChatClient;
import com.JohnnyTests.NettySimpleChat.ChatClientHandler;

/**
 * Simplistic telnet client.
 */
public class NettyTCPClient {
    private final String host;
    private final int port;
    private EventLoopGroup group;
    private Channel ch;
    private ChannelInboundHandlerAdapter handler;

    public NettyTCPClient(String host, int port) {
        this.host = host;
        this.port = port;
        PropertyConfigurator.configure("log4j.properties");
    }

    public void startClient() throws Exception {
        // Log

        Logger logger = Logger.getLogger(NettyTCPClient.class);
        group = new NioEventLoopGroup();

        Bootstrap bootstrap = new Bootstrap().group(group).channel(NioSocketChannel.class)
                .handler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    public void initChannel(SocketChannel ch) throws Exception {
                        ch.pipeline().addLast("encoder", new StringEncoder());
                        ch.pipeline().addLast("decoder", new StringDecoder());
                        // and then business logic.
                        if (handler != null)
                            ch.pipeline().addLast("handler", handler);
                    }
                });

        ChannelFuture f = bootstrap.connect(host, port).sync();
        ch = f.channel();
        System.out.println("Connected!");
    }

    public void sendMessage(String msg) {
        ch.writeAndFlush(msg);
    }

    public void stopClient() {
        // Wait until all messages are flushed before closing the channel.
        try {
            ch.close();

            ch.closeFuture().sync();
        } catch (InterruptedException e) {
        } finally {
            group.shutdownGracefully();
        }
    }

    public ChannelInboundHandlerAdapter getHandler() {
        return handler;
    }

    public void setHandler(ChannelInboundHandlerAdapter handler) {
        this.handler = handler;
    }
}