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..
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