Handle the receive message sent by server from my main function

Expected behavior

I am trying to figure out, how can i use the received message sent by server to the client from my client’s main method. For example I am using the following example code which exchange informatino from the server to the client https://github.com/eugenp/tutorials/tree/master/libraries/src/main/java/com/baeldung/netty. How exactly can I manipulate my received data? I want to use those data in order to depict them from a javafx gui i have in the client side.

Minimal yet complete reproducer code (or URL to code)

Netty version

4.0.0

JVM version (e.g. java -version)

1.8.0_151

OS version (e.g. uname -a)

Windows 7

[rkapsi]

1. Pass some kind of callback into your ClientHandler. Netty’s Promise would be a fine choice.

class ClientHandler {
   private final Promise<Object> promise;

  ClientHandler(Promise<Object> promise) {
    this.promise = promise;
  }

  @Override
  public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
    promise.trySuccess(msg);
    ctx.close();
  }
}

1. In your main() method…

public static void main(String[] args) {
  EventLoopGroup workerGroup = new NioEventLoopGroup();
  Promise<Object> promise = workerGroup.next().newPromise();

  b.handler(new ChannelInitializer<SocketChannel>() {
    @Override
    public void initChannel(SocketChannel ch) throws Exception {
      ch.pipeline().addLast(new RequestDataEncoder(), new ResponseDataDecoder(), new ClientHandler(promise));
    }
  });

  ChannelFuture f = b.connect(host, port).sync();

  // Here's your message
  Object msg = promsie.get();

  f.channel().closeFuture().sync();
}

[normanmaurer]

@kristosh please use stack overflow for questions, this is an issue tracker