Example usage for io.netty.channel.socket SocketChannel isActive

Introduction

In this page you can find the example usage for io.netty.channel.socket SocketChannel isActive.

Prototype

boolean isActive();

Source Link

Document

Return true if the Channel is active and so connected.

Usage

From source file:net.hasor.rsf.console.launcher.TelnetClient.java

License:Apache License

public static void execCommand(String host, int port, final String command, Map<String, String> envMap)
        throws Exception {
    StringWriter commands = new StringWriter();
    if (envMap != null) {
        for (String key : envMap.keySet()) {
            String val = envMap.get(key);
            commands.write("set " + key + " = " + val + " \n");
        }/*from w w  w .  ja v  a  2  s.  c om*/
    }
    commands.write("set SESSION_AFTERCLOSE = true \n");
    commands.write(command + "\n");
    //
    EventLoopGroup group = new NioEventLoopGroup();
    final BasicFuture<Object> closeFuture = new BasicFuture<Object>();
    final AtomicBoolean atomicBoolean = new AtomicBoolean(true);
    try {
        Bootstrap b = new Bootstrap();
        b = b.group(group);
        b = b.channel(NioSocketChannel.class);
        b = b.handler(new ChannelInitializer<SocketChannel>() {
            public void initChannel(SocketChannel ch) {
                ChannelPipeline pipeline = ch.pipeline();
                pipeline.addLast(new DelimiterBasedFrameDecoder(8192, Delimiters.lineDelimiter()));
                pipeline.addLast(new StringDecoder());
                pipeline.addLast(new StringEncoder());
                pipeline.addLast(new TelnetClientHandler(closeFuture, atomicBoolean));
            }
        });
        Channel ch = b.connect(host, port).sync().channel();
        ChannelFuture lastWriteFuture = null;
        BufferedReader commandReader = new BufferedReader(new StringReader(commands.toString()));
        for (;;) {
            if (atomicBoolean.get()) {
                String line = commandReader.readLine();
                if (line == null) {
                    break;
                }
                if (ch.isActive()) {
                    atomicBoolean.set(false);
                    lastWriteFuture = ch.writeAndFlush(line + "\r\n");
                }
            } else {
                Thread.sleep(500);//?
            }
        }
        if (lastWriteFuture != null) {
            lastWriteFuture.sync();
        }
    } finally {
        closeFuture.get();
        group.shutdownGracefully();
    }
}

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