test undertow

undertow.scala

import io.undertow.Undertow
import io.undertow.server.HttpHandler
import io.undertow.server.HttpServerExchange
import io.undertow.util.Headers

object server extends App {
  val server: Undertow = Undertow.builder().addHttpListener(8080, "localhost").setHandler(new HttpHandler() {
    override def handleRequest(exchange: HttpServerExchange): Unit = {
      exchange.getResponseHeaders().put(Headers.CONTENT_TYPE, "text/plain")
      exchange.getResponseSender().send("Hello, world!")
    }
  }).build()

  server.start()
}