Netty 4多客户

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本文介绍了Netty 4多客户的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我需要使客户端能够建立许多连接.我使用Netty 4.0.不幸的是,所有现有示例都没有显示如何创建大量连接.

I need to make the client is able to make many connections. I use Netty 4.0. Unfortunately all existing examples do not show how to create a lot of connections.

public class TelnetClient {
    private Bootstrap b;
    public TelnetClient() {
        b = new Bootstrap();
    }
    public void connect(String host, int port) throws Exception {
        try {
            b.group(new NioEventLoopGroup()).channel(NioSocketChannel.class).remoteAddress(host, port).handler(new TelnetClientInitializer());
            Channel ch = b.connect().sync().channel();
            ChannelFuture lastWriteFuture = null;
            BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
            for (;;) {
                String line = in.readLine();
                if (line == null) break;
                lastWriteFuture = ch.write(line + "\r\n");
                if (line.toLowerCase().equals("bye")) {
                    ch.closeFuture().sync();
                    break;
                }
            }
            if (lastWriteFuture != null) lastWriteFuture.sync();
        } finally {
            b.shutdown();
        }
    }
    public static void main(String[] args) throws Exception {
        TelnetClient tc = new TelnetClient();
        tc.connect("127.0.0.1", 1048);
        tc.connect("192.168.1.123", 1050);
    //...
    }
}

这是正确的决定吗?还是会更好?

Is this the correct decision? or could it be better?

推荐答案

是的,它几乎是正确的.您唯一必须更改的是在每个连接上创建NioEventLoopGroup.

Yes its almost correct.. The only thing you MUST change is the creation of NioEventLoopGroup on every connect.

NioEventLoopGroup实例非常昂贵,因此应该共享它们.创建一个实例并共享它,每次都将同一个实例传递给Bootstrap.group(...).

NioEventLoopGroup instances are expensive so they should be shared. Create one instance and share it, by pass the same instance to the Bootstrap.group(...) everytime..

这篇关于Netty 4多客户的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

07-16 21:43
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