Undertow how to do Non-blocking IO?

Question

I am using Undertow to create a simple application.

public class App {
    public static void main(String[] args) {
        Undertow server = Undertow.builder().         


        

Answer 1

The easiest thing to do would be to wrap your handler in a BlockingHandler.

import io.undertow.Undertow;
import io.undertow.server.*;
import io.undertow.server.handlers.BlockingHandler;
import io.undertow.util.Headers;

public class Under {
    public static void main(String[] args) {
        Undertow server = Undertow.builder()
                .addHttpListener(8080, "localhost")
                .setHandler(new BlockingHandler(new HttpHandler() {
                    public void handleRequest(HttpServerExchange exchange)
                            throws Exception {
                        exchange.getResponseHeaders()
                                .put(Headers.CONTENT_TYPE, "text/plain");
                        exchange.getResponseSender()
                                .send("Hello World");
                    }
                })).build();
        server.start();
    }
}