CODEWITHSUNDEEP
netty
idiotprogrammer
idiotprogrammer

Reputation: 146

Netty lags for a few seconds before shutting down

Iv been doing network programming for a while and recently converted one of my projects to netty. Iv been bothered a lot by the fact that unlike with my original program, the client will freeze for about 3-5 seconds before closing, enough to make me end up force terminating it everytime because I don't want to wait for it. Is this normal for netty? am I doing something wrong?

main method:

public static void main(String[] args) throws Exception {
    final SslContext sslCtx = SslContext.newClientContext(InsecureTrustManagerFactory.INSTANCE);

    EventLoopGroup group = new NioEventLoopGroup();
    try {
        Bootstrap b = new Bootstrap();
        b.group(group)
         .channel(NioSocketChannel.class)
         .handler(new NetworkInitializer(sslCtx));
        // Start the connection attempt.
         ch = b.connect(HOST, PORT).sync().channel();

        //sends the clients name to the server
        askname();


    //loop just does some simple gl stuff and gameplay updating, posted below
        while(running){loop();
        if (Display.isCloseRequested()){


            running = false;
            if (lastWriteFuture != null) {
                lastWriteFuture.sync();
            }    //tells the server to shut down
            write("9");
            ch.closeFuture().sync();
            group.shutdownGracefully();
            System.out.println("herro der");
            break;
        }
        }
    } finally {
        group.shutdownGracefully();

        // The connection is closed automatically on shutdown.
    }
}

loop class:

    private static void loop() {
    GL11.glClear(GL11.GL_COLOR_BUFFER_BIT);
    //main update method for my game.  does calculations and stuff.  I can post it if neccisary but its kinda big.
    SpaceState.update();
    Display.update();
    Display.sync(60);
}

Upvotes: 0

Views: 345

Answers (1)

trustin
trustin

Reputation: 12351

group.shutdownGracefully(); by default waits for about 3 seconds until all pending tasks are executed completely before it terminates itself. You can specify a different timeout value, but too small value has the risk of getting RejectedExecutionException. If you are sure your application has no business left with the event loop group, you can specify a very small value to terminate it immediately.

Upvotes: 2

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